SyncVals · Trajectory

rust-lang-semver-305

codex gpt-5.5 ✓ resolved GOOD_SUCCESS ↑ View task

Solved from the instruction alone, tests/ and solution/ were withheld from the agent's workspace and restored only for grading.

Reward = tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.

Classification , post-hoc; cannot change the reward

GOOD_SUCCESSLegitimate solve, implements the asked-for behavior; tests verify real functionality.

SubtypeLegitimate Solution

EvidenceTest output shows 4/4 pytest tests passed (test_url_roundtrip_suite_passes, test_existing_url_unit_tests_still_pass, test_source_does_not_hardcode_held_back_literals, test_vendored_url_data_does_not_leak_hidden_rows). Agent trajectory shows: (1) Modified /app/url/src/lib.rs:725 for marker detection/normalization, (2) Modified /app/url/src/parser.rs:1358 to insert /. marker after path normalization, (3) Modified /app/url/src/parser.rs:766 for relative joins to recompute marker, (4) Modified /app/url/src/slicing.rs:152 to keep Position::AfterPort distinct from Position::BeforePath, (5) Modified /app/url/src/path_segments.rs:65 for path mutation handling, (6) Added 2 focused regression tests (test_non_special_no_authority_double_slash_path_marker, test_non_special_no_authority_double_slash_path_marker_join) with subcases for parent directory joins. Full test suite: 60 unit tests passed, 66 doc tests passed, 2 data tests passed. Build completed with `cargo build --locked` returning exit code 0 with no new failures.

Root causeAgent successfully implemented a complex URL parsing fix across multiple interacting systems (parser, serialization, slicing positions, relative joins) as required by the instruction. The implementation properly handles the marker insertion/removal logic, preserves round-trip invariants, and maintains backward compatibility with all existing tests.

RecommendationN/A - task is fine

Trajectory

Tool-by-tool agent trajectory

64 tool calls · 2 tool types · 88 steps

<permissions instructions> Filesystem sandboxing defines which files can be read or written. `sandbox_mode` is `danger-full-access`: No filesystem sandboxing - all commands are permitted. Network access is enabled. Approval policy is currently never. Do not provide the `sandbox_permissions` for any reason, commands will be rejected. </permissions instructions><apps_instructions> ## Apps (Connectors) Apps (Connectors) can be explicitly triggered in user messages in the format `[$app-name](app://{connector_id})`. Apps can also be implicitly triggered as long as the context suggests usage of available apps. An app is equivalent to a set of MCP tools within the `codex_apps` MCP. An installed app's MCP tools are either provided to you already, or can be lazy-loaded through the `tool_search` tool. If `tool_search` is available, the apps that are searchable by `tools_search` will be listed by it. Do not additionally call list_mcp_resources or list_mcp_resource_templates for apps. </apps_instructions><skills_instructions> ## Skills A skill is a set of instructions provided through a `SKILL.md` source. Below is the list of skills that can be used. Each entry includes a name, description, and source locator. `file` locators are on the host filesystem, `environment resource` locators are owned by an execution environment, `orchestrator resource` locators are opaque non-filesystem resources, and `custom resource` locators use their provider's access mechanism. ### Available skills - imagegen: Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output should be a bitmap asset rather than repo-native code or vector. Do not use when the task is better handled by editing existing SVG/vector/code-native assets, extending an established icon or logo system, or building the visual directly in HTML/CSS/canvas. (file: /tmp/codex-home/skills/.system/imagegen/SKILL.md) - openai-docs: Use when the user asks how to build with OpenAI products or APIs, asks about Codex itself or choosing Codex surfaces, needs up-to-date official documentation with citations, help choosing the latest model for a use case, or model upgrade and prompt-upgrade guidance; use OpenAI docs MCP tools for non-Codex docs questions, use the Codex manual helper first for broad Codex self-knowledge, and restrict fallback browsing to official OpenAI domains. (file: /tmp/codex-home/skills/.system/openai-docs/SKILL.md) - plugin-creator: Create and scaffold plugin directories for Codex with a required `.codex-plugin/plugin.json`, optional plugin folders/files, valid manifest defaults, and personal-marketplace entries by default. Use when Codex needs to create a new personal plugin, add optional plugin structure, generate or update marketplace entries for plugin ordering and availability metadata, or update an existing local plugin during development with the CLI-driven cachebuster and reinstall flow. (file: /tmp/codex-home/skills/.system/plugin-creator/SKILL.md) - skill-creator: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations. (file: /tmp/codex-home/skills/.system/skill-creator/SKILL.md) - skill-installer: Install Codex skills into $CODEX_HOME/skills from a curated list or a [code-host] repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos). (file: /tmp/codex-home/skills/.system/skill-installer/SKILL.md) ### How to use skills - Discovery: The list above is the skills available in this session (name + description + source locator). `file` entries live on the host filesystem, `environment resource` entries are owned by their execution environment, `orchestrator resource` entries must be accessed through `skills.list` and `skills.read`, and `custom resource` entries use their provider's access mechanism. - Trigger rules: If the user names a skill (with `$SkillName` or plain text) OR the task clearly matches a skill's description shown above, you must use that skill for that turn. Multiple mentions mean use them all. Do not carry skills across turns unless re-mentioned. - Missing/blocked: If a named skill isn't in the list or its source can't be read, say so briefly and continue with the best fallback. - How to use a skill (progressive disclosure): 1) After deciding to use a skill, the main agent must read its `SKILL.md` completely before taking task actions. For a `file` entry, open the listed path. For an `environment resource`, use the filesystem of the owning environment. For an `orchestrator resource`, call `skills.list` with `{"authority":{"kind":"orchestrator"}}`, select the matching package, and pass its `main_resource` to `skills.read`. If a read is truncated or paginated, continue until EOF. 2) When `SKILL.md` references another resource, use the same access mechanism. Resolve relative paths against a filesystem-backed skill directory. For orchestrator skills, pass the exact referenced resource identifier with the same authority and package to `skills.read`; do not treat `skill://` identifiers as filesystem paths. 3) If `SKILL.md` points to extra folders such as `references/`, use its routing instructions to identify the resources required for the task. The main agent must read each required instruction or reference file itself before acting on it. Do not delegate reading, summarizing, or interpreting skill instructions to a subagent. Subagents may still perform task work when the selected skill allows it. 4) For filesystem-backed skills, prefer running or patching provided scripts instead of retyping large code blocks. For orchestrator skills, use `skills.read` and the available tools; do not invent a local path. 5) Reuse provided assets or templates through the same source access mechanism instead of recreating them. - Coordination and sequencing: - If multiple skills apply, choose the minimal set that covers the request and state the order you'll use them. - Announce which skill(s) you're using and why (one short line). If you skip an obvious skill, say why. - Context hygiene: - Progressive disclosure applies to selecting relevant files, not partially reading a selected instruction file. Do not load unrelated references, scripts, or assets. - Avoid deep reference-chasing: prefer opening only files directly linked from `SKILL.md` unless you're blocked. - When variants exist (frameworks, providers, domains), pick only the relevant reference file(s) and note that choice. - Safety and fallback: If a skill can't be applied cleanly (missing files, unclear instructions), state the issue, pick the next-best approach, and continue. </skills_instructions>

<environment_context> <cwd>/app</cwd> <shell>bash</shell> <current_date>2026-06-21</current_date> <timezone>Etc/UTC</timezone> <filesystem><workspace_roots><root>/app</root></workspace_roots><permission_profile type="disabled"><file_system type="unrestricted" /></permission_profile></filesystem> </environment_context>

A Rust URL parsing workspace lives at /app. It exposes URL parsing, joining, serialization, path and host accessors, and public slicing positions. A parsed or joined URL should round-trip through serialization and parsing while preserving scheme, host, path, query, fragment, and slicing behavior. Fix non-special URLs with no host or authority whose logical path starts with //. When serializing that shape, insert the text /. between the scheme or port boundary and the logical path so reparsing does not treat the path as an authority. The marker is serialized text only: path() still returns the logical path without it, Position::AfterPort points before it, Position::BeforePath points after it, and the slice between those positions is /. for affected URLs. Joins must recompute the marker after path resolution. A join that leaves an affected // logical path keeps it; a join that resolves back to a single leading slash removes it, including parent-directory relative joins. Query-only and fragment-only joins preserve the existing path shape. Host-bearing URLs and special schemes keep their existing behavior. The relevant code paths are the non-special parser, relative join resolution, serialization, path accessors, and slicing positions in url/src/parser.rs, url/src/lib.rs, and url/src/slicing.rs. Apply the marker after dot-segment path normalization, and keep Position::AfterPort distinct from Position::BeforePath when the marker exists. Do not reject valid inputs or change public APIs. Build with cargo build --locked after the change.

I’ll inspect the Rust workspace and the URL implementation/tests first, then patch the smallest surface that controls parsing, serialization, joins, and slicing positions.

shell

pwd && rg --files

output

Chunk ID: 24f926
Wall time: 0.0001 seconds
Process exited with code 0
Original token count: 21295
Output:
Total output lines: 880

/app
UPGRADING.md
idna/Cargo.toml
idna/src/make_uts46_mapping_table.py
idna/src/uts46.rs
idna/src/IdnaMappingTable.txt
idna/src/lib.rs
idna/src/punycode.rs
idna/src/uts46_mapping_table.rs
idna/tests/IdnaTestV2.txt
idna/tests/uts46.rs
idna/tests/punycode_tests.json
idna/tests/tests.rs
idna/tests/unit.rs
idna/tests/punycode.rs
idna/benches/all.rs
LICENSE-APACHE
data-url/Cargo.toml
data-url/src/forgiving_base64.rs
data-url/src/mime.rs
data-url/src/lib.rs
data-url/src/make_base64_decode_table.py
data-url/tests/data-urls.json
data-url/tests/generated-mime-types.json
data-url/tests/base64.json
data-url/tests/mime-types.json
data-url/tests/wpt.rs
data-url/README.md
debug_metadata/url.natvis
debug_metadata/README.md
url/Cargo.toml
url/src/host.rs
url/src/slicing.rs
url/src/origin.rs
url/src/quirks.rs
url/src/lib.rs
url/src/path_segments.rs
url/src/parser.rs
url/tests/data.rs
url/tests/setters_tests.json
url/tests/urltestdata.json
url/tests/unit.rs
url/tests/debugger_visualizer.rs
url/benches/parse_url.rs
url/fuzz/Cargo.toml
url/fuzz/fuzz_targets/parse.rs
deny.toml
LICENSE-MIT
form_urlencoded/LICENSE-APACHE
form_urlencoded/LICENSE-MIT
form_urlencoded/Cargo.toml
form_urlencoded/src/lib.rs
SECURITY.md
Cargo.lock
percent_encoding/Cargo.toml
percent_encoding/src/lib.rs
Cargo.toml
README.md
target/debug/libpercent_encoding.rlib
target/debug/liburl.rlib
target/debug/incremental/unit-1rtx6ttyceut6/s-hjou0rzxf7-0gprirm.lock
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target/debug/increm…11295 tokens truncated…dqw95.o
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target/debug/deps/data-7f47dce1bd8e2e0f
target/debug/deps/libdebugger_test_parser-1e0be53005f01159.rmeta
target/debug/deps/url-a827b1398b422d9c
target/debug/deps/liblog-33dc065ff7e289ee.rlib
target/debug/deps/libdirs_sys_next-a1b4df44aae05101.rmeta
target/debug/deps/libserde-d508bb3ff3dd4055.rlib
target/debug/deps/libserde_json-dc770969e002a827.rlib
target/debug/deps/libassert_matches-997c872328890f4a.rlib
target/debug/deps/libdebugger_test-0ad1fd381eb6ea52.so
target/debug/deps/log-33dc065ff7e289ee.d
target/debug/deps/libunicode_width-efcc0ccd9d13bff1.rlib
target/debug/deps/libcfg_if-cfacf702a0ce2975.rlib
target/debug/deps/wpt-606068d5db7783da.d
target/debug/deps/debugger_test_parser-1e0be53005f01159.d
target/debug/deps/libgetopts-75a5cfb030da81b5.rlib
target/debug/deps/tests-59cd81bff71ae601
target/debug/deps/quote-01f83d3eea7b6f2b.d
target/debug/deps/libregex-b4101d53f0aa179b.rmeta
target/debug/deps/libproc_macro2-1eef835a9c881aa4.rlib
target/debug/deps/libitoa-07607aacafe8c110.rmeta
target/debug/deps/libregex_syntax-bd872110d85f2b72.rmeta
target/debug/deps/idna-a04547c9c0564051.d
target/debug/deps/unit-49bdfe7cb4758172
target/debug/deps/libzmij-5cc8b833226b94c4.rmeta
target/debug/deps/percent_encoding-63ddf0be2a9952ea.d
target/debug/deps/libaho_corasick-2e9dc80e9d7bfbbd.rmeta
target/debug/deps/serde-d508bb3ff3dd4055.d
target/debug/deps/liblibc-ace0f0bbdcbf0373.rlib
target/debug/deps/libregex_automata-64dbae0cf587aa72.rmeta
target/debug/deps/zmij-5cc8b833226b94c4.d
target/debug/deps/libdirs_sys_next-a1b4df44aae05101.rlib
target/debug/deps/url-a827b1398b422d9c.d
target/debug/deps/libunicode_width-efcc0ccd9d13bff1.rmeta
target/debug/deps/libdebugger_test_parser-1e0be53005f01159.rlib
target/debug/deps/libmemchr-0e59f4b81d97fa7d.rlib
target/debug/deps/serde_derive-966e8ca013c020f8.d
target/debug/deps/libterm-218f25e3d530c86d.rmeta
target/debug/deps/libterm-218f25e3d530c86d.rlib
target/debug/deps/dirs_next-9f9ae5649cd83b0e.d
target/debug/deps/bencher-99ba437b5f01bd5b.d
target/debug/deps/libdirs_next-9f9ae5649cd83b0e.rmeta
target/debug/deps/libcfg_if-cfacf702a0ce2975.rmeta
target/debug/deps/libregex_syntax-bd872110d85f2b72.rlib
target/debug/deps/libregex-b4101d53f0aa179b.rlib
target/debug/deps/libmemchr-0e59f4b81d97fa7d.rmeta
target/debug/deps/libproc_macro2-1eef835a9c881aa4.rmeta
target/debug/deps/regex_syntax-bd872110d85f2b72.d
target/debug/deps/cfg_if-cfacf702a0ce2975.d
target/debug/deps/libbencher-99ba437b5f01bd5b.rmeta
target/debug/deps/libserde_core-b1dddf678d28d575.rmeta
target/debug/deps/itoa-07607aacafe8c110.d
target/debug/deps/unit-a5735195d8f8601f.d
target/debug/deps/libbencher-99ba437b5f01bd5b.rlib
target/debug/deps/syn-e03837b46b547978.d
target/debug/deps/libzmij-5cc8b833226b94c4.rlib
target/debug/deps/unicode_width-efcc0ccd9d13bff1.d
target/debug/deps/libsyn-729eba90f722dded.rmeta
target/debug/deps/percent_encoding-63ddf0be2a9952ea
target/debug/deps/aho_corasick-2e9dc80e9d7bfbbd.d
target/debug/deps/memchr-0e59f4b81d97fa7d.d
target/debug/deps/idna-a04547c9c0564051
target/debug/deps/libtester-9eb23c65da3afe94.rlib
target/debug/deps/libquote-01f83d3eea7b6f2b.rmeta
target/debug/deps/libgetopts-75a5cfb030da81b5.rmeta
target/debug/deps/libtester-9eb23c65da3afe94.rmeta
target/debug/deps/syn-729eba90f722dded.d
target/debug/deps/libserde-d508bb3ff3dd4055.rmeta
target/debug/deps/liblog-33dc065ff7e289ee.rmeta
target/debug/deps/dirs_sys_next-a1b4df44aae05101.d
target/debug/deps/num_cpus-b2a4ede6cfed6774.d

shell

git status --short

output

Chunk ID: 60003e
Wall time: 0.0000 seconds
Process exited with code 128
Original token count: 18
Output:
fatal: not a git repository (or any of the parent directories): .git

This is a Cargo workspace without a `.git` directory in `/app`, so I’ll treat the current files as the source of truth and avoid relying on git diff metadata. Next I’m narrowing in on the URL struct fields and path-position accounting.

shell

rg -n "struct Url|Position|path_start|before_path|AfterPort|BeforePath|path\(" url/src/lib.rs url/src/parser.rs url/src/slicing.rs

output

Chunk ID: a06d69
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 3696
Output:
url/src/lib.rs:28:use url::{Url, Host, Position};
url/src/lib.rs:42:assert!(issue_list_url.path() == "/rust-lang/rust/issues");
url/src/lib.rs:46:assert!(&issue_list_url[Position::BeforePath..] == "/rust-lang/rust/issues?labels=E-easy&state=open");
url/src/lib.rs:67:assert!(data_url.path() == "text/plain,Hello");
url/src/lib.rs:156:pub use crate::slicing::Position;
url/src/lib.rs:170:pub struct Url {
url/src/lib.rs:189:    path_start: u32,            // Before initial '/', if any
url/src/lib.rs:190:    query_start: Option<u32>,   // Before '?', unlike Position::QueryStart
url/src/lib.rs:191:    fragment_start: Option<u32>, // Before '#', unlike Position::FragmentStart
url/src/lib.rs:326:    fn strip_trailing_spaces_from_opaque_path(&mut self) {
url/src/lib.rs:457:        let (base_path, base_filename) = extract_path_filename(self.path());
url/src/lib.rs:458:        let (url_path, url_filename) = extract_path_filename(url.path());
url/src/lib.rs:665:            if self.path_start == self.host_end {
url/src/lib.rs:669:                let port_str = self.slice(self.host_end + 1..self.path_start);
url/src/lib.rs:676:                self.path_start as usize == self.serialization.len()
url/src/lib.rs:677:                    || matches!(self.byte_at(self.path_start), b'/' | b'#' | b'?')
url/src/lib.rs:686:            assert_eq!(self.path_start, self.scheme_end + 1);
url/src/lib.rs:689:            assert!(start >= self.path_start);
url/src/lib.rs:693:            assert!(start >= self.path_start);
url/src/lib.rs:713:        assert_eq!(self.path_start, other.path_start);
url/src/lib.rs:882:        if self.has_authority() && self.path_start > self.scheme_end + scheme_separator_len {
url/src/lib.rs:883:            self.slice(self.scheme_end + scheme_separator_len..self.path_start)
url/src/lib.rs:1252:    /// assert_eq!(url.path(), "/api/versions");
url/src/lib.rs:1255:    /// assert_eq!(url.path(), "/");
url/src/lib.rs:1258:    /// assert_eq!(url.path(), "/countries/vi%E1%BB%87t%20nam");
url/src/lib.rs:1263:    pub fn path(&self) -> &str {
url/src/lib.rs:1265:            (None, None) => self.slice(self.path_start..),
url/src/lib.rs:1267:                self.slice(self.path_start..next_component_start)
url/src/lib.rs:1311:        let path = self.path();
url/src/lib.rs:1464:            self.strip_trailing_spaces_from_opaque_path();
url/src/lib.rs:1529:            self.strip_trailing_spaces_from_opaque_path();
url/src/lib.rs:1587:    fn take_after_path(&mut self) -> String {
url/src/lib.rs:1608:    /// url.set_path("api/comments");
url/src/lib.rs:1610:    /// assert_eq!(url.path(), "/api/comments");
url/src/lib.rs:1613:    /// url.set_path("data/report.csv");
url/src/lib.rs:1615:    /// assert_eq!(url.path(), "/data/report.csv");
url/src/lib.rs:1619:    /// url.set_path("api/some comments");
url/src/lib.rs:1621:    /// assert_eq!(url.path(), "/api/some%20comments");
url/src/lib.rs:1625:    /// url.set_path("api/some%20comments");
url/src/lib.rs:1627:    /// assert_eq!(url.path(), "/api/some%20comments");
url/src/lib.rs:1633:    pub fn set_path(&mut self, mut path: &str) {
url/src/lib.rs:1634:        let after_path = self.take_after_path();
url/src/lib.rs:1638:        self.serialization.truncate(self.path_start as usize);
url/src/lib.rs:1645:                parser.parse_cannot_be_a_base_path(parser::Input::new(path));
url/src/lib.rs:1648:                parser.parse_path_start(scheme_type, &mut has_host, parser::Input::new(path));
url/src/lib.rs:1651:        self.restore_after_path(old_after_path_pos, &after_path);
url/src/lib.rs:1666:    fn restore_after_path(&mut self, old_after_path_position: u32, after_path: &str) {
url/src/lib.rs:1759:                    .drain(self.host_end as usize..self.path_start as usize);
url/src/lib.rs:1760:                let offset = self.path_start - self.host_end;
url/src/lib.rs:1761:                self.path_start = self.host_end;
url/src/lib.rs:1771:                let path_and_after = self.slice(self.path_start..).to_owned();
url/src/lib.rs:1774:                let old_path_start = self.path_start;
url/src/lib.rs:1775:                let new_path_start = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:1776:                self.path_start = new_path_start;
url/src/lib.rs:1778:                    *index -= old_path_start;
url/src/lib.rs:1779:                    *index += new_path_start;
url/src/lib.rs:1909:            } else if self.serialization.len() == self.path_start as usize {
url/src/lib.rs:1913:            debug_assert!(self.byte_at(self.path_start) == b'/');
url/src/lib.rs:1915:            let new_path_start = if scheme_type.is_file() {
url/src/lib.rs:1922:                .drain(new_path_start as usize..self.path_start as usize);
url/src/lib.rs:1923:            let offset = self.path_start - new_path_start;
url/src/lib.rs:1924:            self.path_start = new_path_start;
url/src/lib.rs:1925:            self.username_end = new_path_start;
url/src/lib.rs:1926:            self.host_start = new_path_start;
url/src/lib.rs:1927:            self.host_end = new_path_start;
url/src/lib.rs:1942:            self.path_start
url/src/lib.rs:1973:        adjust(&mut self.path_start);
url/src/lib.rs:2081:            adjust(&mut self.path_start);
url/src/lib.rs:2106:            self.path_start -= offset;
url/src/lib.rs:2194:        adjust(&mut self.path_start);
url/src/lib.rs:2345:        adjust(&mut self.path_start);
url/src/lib.rs:2380:    /// let url = Url::from_file_path("/tmp/foo.txt")?;
url/src/lib.rs:2383:    /// let url = Url::from_file_path("../foo.txt");
url/src/lib.rs:2386:    /// let url = Url::from_file_path("https://google.com/");
url/src/lib.rs:2407:            path_start: host_end,
url/src/lib.rs:2423:    /// * `"index.html"` parsed with `Url::from_directory_path(Path::new("/var/www"))`
url/src/lib.rs:2425:    /// * `"index.html"` parsed with `Url::from_file_path(Path::new("/var/www"))`
url/src/lib.rs:2433:        let mut url = Url::from_file_path(path)?;
url/src/lib.rs:2463:            ref path_start,
url/src/lib.rs:2475:            path_start,
url/src/lib.rs:2503:            path_start,
url/src/lib.rs:2515:            path_start,
url/src/lib.rs:2538:    /// let path = url.to_file_path();
url/src/lib.rs:2549:    pub fn to_file_path(&self) -> Result<PathBuf, ()> {
url/src/lib.rs:2625:            .field("path", &self.path())
url/src/lib.rs:2727:        struct UrlVisitor;
url/src/lib.rs:2892:        "to_file_path() failed to produce an absolute Path"
url/src/lib.rs:2954:        "to_file_path() failed to produce an absolute Path"
url/src/lib.rs:2961:pub struct UrlQuery<'a> {
url/src/parser.rs:470:        let path_start = to_u32(self.serialization.len())?;
url/src/parser.rs:471:        let username_end = path_start;
url/src/parser.rs:472:        let host_start = path_start;
url/src/parser.rs:473:        let host_end = path_start;
url/src/parser.rs:477:            let path_start = self.serialization.len();
url/src/parser.rs:479:            self.parse_path(scheme_type, &mut false, path_start, input)
url/src/parser.rs:481:            self.parse_cannot_be_a_base_path(input)
url/src/parser.rs:491:            path_start,
url/src/parser.rs:516:                let (path_start, mut host, remaining) =
url/src/parser.rs:520:                let remaining = if path_start {
url/src/parser.rs:521:                    self.parse_path_start(SchemeType::File, &mut has_host, remaining)
url/src/parser.rs:523:                    let path_start = self.serialization.len();
url/src/parser.rs:525:                    self.parse_path(SchemeType::File, &mut has_host, path_start, remaining)
url/src/parser.rs:546:                    path_start: host_end,
url/src/parser.rs:581:                    self.parse_path(SchemeType::File, &mut false, host_end, parse_path_input);
url/src/parser.rs:597:                    path_start: host_end,
url/src/parser.rs:642:                        self.shorten_path(SchemeType::File, base_url.path_start as usize);
url/src/parser.rs:643:                        let remaining = self.parse_path(
url/src/parser.rs:646:                            base_url.path_start as usize,
url/src/parser.rs:657:                            base_url.path_start,
url/src/parser.rs:663:                        let path_start = "file://".len();
url/src/parser.rs:665:                            self.parse_path(SchemeType::File, &mut false, path_start, input);
url/src/parser.rs:668:                        let path_start = path_start as u32;
url/src/parser.rs:672:                            username_end: path_start,
url/src/parser.rs:673:                            host_start: path_start,
url/src/parser.rs:674:                            host_end: path_start,
url/src/parser.rs:677:                            path_start,
url/src/parser.rs:687:            let path_start = "file://".len();
url/src/parser.rs:688:            let remaining = self.parse_path(SchemeType::File, &mut false, path_start, input);
url/src/parser.rs:691:            let path_start = path_start as u32;
url/src/parser.rs:695:                username_end: path_start,
url/src/parser.rs:696:                host_start: path_start,
url/src/parser.rs:697:                host_end: path_start,
url/src/parser.rs:700:                path_start,
url/src/parser.rs:766:                let path_start = base_url.path_start;
url/src/parser.rs:767:                self.serialization.push_str(base_url.slice(..path_start));
url/src/parser.rs:769:                let remaining = self.parse_path(
url/src/parser.rs:772:                    path_start as usize,
url/src/parser.rs:783:                    base_url.path_start,
url/src/parser.rs:794:                self.pop_path(scheme_type, base_url.path_start as usize);
url/src/parser.rs:797:                if self.serialization.len() == base_url.path_start as usize
url/src/parser.rs:803:                    (Some('/'), remaining) => self.parse_path(
url/src/parser.rs:806:                        base_url.path_start as usize,
url/src/parser.rs:810:                        self.parse_path(scheme_type, &mut true, base_url.path_start as usize, input)
url/src/parser.rs:821:                    base_url.path_start,
url/src/parser.rs:848:        let path_start = to_u32(self.serialization.len())?;
url/src/parser.rs:849:        let remaining = self.parse_path_start(scheme_type, &mut true, remaining);
url/src/parser.rs:858:            path_start,
url/src/parser.rs:1127:    pub fn parse_path_start<'i>(
url/src/parser.rs:1133:        let path_start = self.serialization.len();
url/src/parser.rs:1146:                    return self.parse_path(scheme_type, has_host, path_start, remaining);
url/src/parser.rs:1149:            return self.parse_path(scheme_type, has_host, path_start, input);
url/src/parser.rs:1163:        self.parse_path(scheme_type, has_host, path_start, input)
url/src/parser.rs:1170:        path_start: usize,
url/src/parser.rs:1230:                        && Parser::last_slash_can_be_removed(&self.serialization, path_start)
url/src/parser.rs:1234:                    self.shorten_path(scheme_type, path_start);
url/src/parser.rs:1279:            let path = self.serialization.split_off(path_start);
url/src/parser.rs:1287:    fn last_slash_can_be_removed(serialization: &str, path_start: usize) -> bool {
url/src/parser.rs:1291:            segment_before_start >= path_start
url/src/parser.rs:1293:                && !path_starts_with_windows_drive_letter(&serialization[segment_before_start..])
url/src/parser.rs:1300:    fn shorten_path(&mut self, scheme_type: SchemeType, path_start: usize) {
url/src/parser.rs:1302:        if self.serialization.len() == path_start {
url/src/parser.rs:1307:            && is_normalized_windows_drive_letter(&self.serialization[path_start..])
url/src/parser.rs:1312:        self.pop_path(scheme_type, path_start);
url/src/parser.rs:1316:    fn pop_path(&mut self, scheme_type: SchemeType, path_start: usize) {
url/src/parser.rs:1317:        if self.serialization.len() > path_start {
url/src/parser.rs:1318:            let slash_position = self.serialization[path_start..].rfind('/').unwrap();
url/src/parser.rs:1320:            let segment_start = path_start + slash_position + 1;
url/src/parser.rs:1357:        path_start: u32,
url/src/parser.rs:1370:            path_start,
url/src/parser.rs:1562:fn path_starts_with_windows_drive_letter(s: &str) -> bool {
url/src/slicing.rs:19:impl Index<RangeFrom<Position>> for Url {
url/src/slicing.rs:21:    fn index(&self, range: RangeFrom<Position>) -> &str {
url/src/slicing.rs:26:impl Index<RangeTo<Position>> for Url {
url/src/slicing.rs:28:    fn index(&self, range: RangeTo<Position>) -> &str {
url/src/slicing.rs:33:impl Index<Range<Position>> for Url {
url/src/slicing.rs:35:    fn index(&self, range: Range<Position>) -> &str {
url/src/slicing.rs:45:/// # use url::{Url, Position};
url/src/slicing.rs:48:/// let serialization_without_fragment: &str = &some_url[..Position::AfterQuery];
url/src/slicing.rs:49:/// let authority: &str = &some_url[Position::BeforeUsername..Position::AfterPort];
url/src/slicing.rs:50:/// let data_url_payload: &str = &some_url[Position::BeforePath..Position::AfterQuery];
url/src/slicing.rs:51:/// let scheme_relative: &str = &some_url[Position::BeforeUsername..];
url/src/slicing.rs:81:pub enum Position {
url/src/slicing.rs:91:    AfterPort,
url/src/slicing.rs:92:    BeforePath,
url/src/slicing.rs:102:    fn index(&self, position: Position) -> usize {
url/src/slicing.rs:104:            Position::BeforeScheme => 0,
url/src/slicing.rs:106:            Position::AfterScheme => self.scheme_end as usize,
url/src/slicing.rs:108:            Position::BeforeUsername => {
url/src/slicing.rs:118:            Position::AfterUsername => self.username_end as usize,
url/src/slicing.rs:120:            Position::BeforePassword => {
url/src/slicing.rs:129:            Position::AfterPassword => {
url/src/slicing.rs:139:            Position::BeforeHost => self.host_start as usize,
url/src/slicing.rs:141:            Position::AfterHost => self.host_end as usize,
url/src/slicing.rs:143:            Position::BeforePort => {
url/src/slicing.rs:152:            Position::AfterPort => self.path_start as usize,
url/src/slicing.rs:154:            Position::BeforePath => self.path_start as usize,
url/src/slicing.rs:156:            Position::AfterPath => match (self.query_start, self.fragment_start) {
url/src/slicing.rs:162:            Position::BeforeQuery => match (self.query_start, self.fragment_start) {
url/src/slicing.rs:171:            Position::AfterQuery => match self.fragment_start {
url/src/slicing.rs:176:            Position::BeforeFragment => match self.fragment_start {
url/src/slicing.rs:184:            Position::AfterFragment => self.serialization.len(),

shell

rg -n "relative|join|dot|segment|cannot_be_a_base|non-special|special|NonRelative" url/src/parser.rs url/src/lib.rs url/src/slicing.rs

output

Chunk ID: 31bf8c
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 3677
Output:
url/src/parser.rs:39:// The backslash (\) character is treated as a path separator in special URLs
url/src/parser.rs:84:    RelativeUrlWithoutBase => "relative URL without a base",
url/src/parser.rs:85:    RelativeUrlWithCannotBeABaseBase => "relative URL with a cannot-be-a-base base",
url/src/parser.rs:153:    pub fn is_special(&self) -> bool {
url/src/parser.rs:372:            } else if base_url.cannot_be_a_base() {
url/src/parser.rs:379:                    self.parse_relative(input, scheme_type, base_url)
url/src/parser.rs:432:                // special relative or authority state
url/src/parser.rs:438:                        // "Cannot-be-a-base" URLs only happen with "not special" schemes.
url/src/parser.rs:439:                        debug_assert!(!base_url.cannot_be_a_base());
url/src/parser.rs:441:                        return self.parse_relative(input, scheme_type, base_url);
url/src/parser.rs:444:                // special authority slashes state
url/src/parser.rs:454:            SchemeType::NotSpecial => self.parse_non_special(input, scheme_type, scheme_end),
url/src/parser.rs:459:    fn parse_non_special(
url/src/parser.rs:481:            self.parse_cannot_be_a_base_path(input)
url/src/parser.rs:556:                if !starts_with_windows_drive_letter_segment(&input_after_first_char) {
url/src/parser.rs:558:                        let first_segment = base_url.path_segments().unwrap().next().unwrap();
url/src/parser.rs:559:                        if is_normalized_windows_drive_letter(first_segment) {
url/src/parser.rs:561:                            self.serialization.push_str(first_segment);
url/src/parser.rs:636:                    if !starts_with_windows_drive_letter_segment(&input) {
url/src/parser.rs:707:    fn parse_relative(
url/src/parser.rs:713:        // relative state
url/src/parser.rs:795:                // A special url always has a path.
url/src/parser.rs:798:                    && (SchemeType::from(base_url.scheme()).is_special() || !input.is_empty())
url/src/parser.rs:883:                '\\' if scheme_type.is_special() => break,
url/src/parser.rs:893:                // url is special and c is U+005C (\)
url/src/parser.rs:896:                    if c == '/' || c == '?' || c == '#' || (scheme_type.is_special() && c == '\\') {
url/src/parser.rs:953:                if scheme_type.is_special() {
url/src/parser.rs:988:                '\\' if scheme_type.is_special() => break,
url/src/parser.rs:1020:        if !scheme_type.is_special() {
url/src/parser.rs:1135:        // If url is special, then:
url/src/parser.rs:1136:        if scheme_type.is_special() {
url/src/parser.rs:1141:            // A special URL always has a non-empty path.
url/src/parser.rs:1175:            let segment_start = self.serialization.len();
url/src/parser.rs:1191:                        && scheme_type.is_special() =>
url/src/parser.rs:1205:                            if scheme_type.is_special() {
url/src/parser.rs:1218:            let segment_before_slash = if ends_with_slash {
url/src/parser.rs:1219:                &self.serialization[segment_start..self.serialization.len() - 1]
url/src/parser.rs:1221:                &self.serialization[segment_start..self.serialization.len()]
url/src/parser.rs:1223:            match segment_before_slash {
url/src/parser.rs:1224:                // If buffer is a double-dot path segment, shorten url’s path,
url/src/parser.rs:1227:                    debug_assert!(self.serialization.as_bytes()[segment_start - 1] == b'/');
url/src/parser.rs:1228:                    self.serialization.truncate(segment_start);
url/src/parser.rs:1236:                    // and then if neither c is U+002F (/), nor url is special and c is U+005C (\), append the empty string to url’s path.
url/src/parser.rs:1241:                // Otherwise, if buffer is a single-dot path segment and if neither c is U+002F (/),
url/src/parser.rs:1242:                // nor url is special and c is U+005C (\), append the empty string to url’s path.
url/src/parser.rs:1244:                    self.serialization.truncate(segment_start);
url/src/parser.rs:1251:                    if scheme_type.is_file() && is_windows_drive_letter(segment_before_slash) {
url/src/parser.rs:1253:                        if let Some(c) = segment_before_slash.chars().next() {
url/src/parser.rs:1254:                            self.serialization.truncate(segment_start);
url/src/parser.rs:1288:        let url_before_segment = &serialization[..serialization.len() - 1];
url/src/parser.rs:1289:        if let Some(segment_before_start) = url_before_segment.rfind('/') {
url/src/parser.rs:1291:            segment_before_start >= path_start
url/src/parser.rs:1293:                && !path_starts_with_windows_drive_letter(&serialization[segment_before_start..])
url/src/parser.rs:1320:            let segment_start = path_start + slash_position + 1;
url/src/parser.rs:1323:                && is_normalized_windows_drive_letter(&self.serialization[segment_start..]))
url/src/parser.rs:1325:                self.serialization.truncate(segment_start);
url/src/parser.rs:1330:    pub fn parse_cannot_be_a_base_path<'i>(&mut self, mut input: Input<'i>) -> Input<'i> {
url/src/parser.rs:1434:        let set = if scheme_type.is_special() {
url/src/parser.rs:1549:fn is_normalized_windows_drive_letter(segment: &str) -> bool {
url/src/parser.rs:1550:    is_windows_drive_letter(segment) && segment.as_bytes()[1] == b':'
url/src/parser.rs:1553:/// Whether the scheme is file:, the path has a single segment, and that segment
url/src/parser.rs:1556:pub fn is_windows_drive_letter(segment: &str) -> bool {
url/src/parser.rs:1557:    segment.len() == 2 && starts_with_windows_drive_letter(segment)
url/src/parser.rs:1578:fn starts_with_windows_drive_letter_segment(input: &Input<'_>) -> bool {
url/src/slicing.rs:51:/// let scheme_relative: &str = &some_url[Position::BeforeUsername..];
url/src/lib.rs:43:assert!(issue_list_url.path_segments().map(|c| c.collect::<Vec<_>>()) ==
url/src/lib.rs:48:assert!(!issue_list_url.cannot_be_a_base());
url/src/lib.rs:56:and their "path" is an arbitrary string rather than slash-separated segments:
url/src/lib.rs:65:assert!(data_url.cannot_be_a_base());
url/src/lib.rs:68:assert!(data_url.path_segments().is_none());
url/src/lib.rs:82:Many contexts allow URL *references* that can be relative to a *base URL*:
url/src/lib.rs:88:Since parsed URLs are absolute, giving a base is required for parsing relative URLs:
url/src/lib.rs:96:Use the `join` method on an `Url` to use it as a base URL:
url/src/lib.rs:104:let css_url = this_document.join("../main.css")?;
url/src/lib.rs:155:pub use crate::path_segments::PathSegmentsMut;
url/src/lib.rs:162:mod path_segments;
url/src/lib.rs:179:    ///   hierarchical-path = [ "/" path-segment ]+
url/src/lib.rs:327:        if !self.cannot_be_a_base() {
url/src/lib.rs:353:    /// The inverse of this is [`make_relative`].
url/src/lib.rs:367:    /// let url = base.join("c.png")?;
url/src/lib.rs:371:    /// let url = base.join("c.png")?;
url/src/lib.rs:384:    /// [`make_relative`]: #method.make_relative
url/src/lib.rs:386:    pub fn join(&self, input: &str) -> Result<Url, crate::ParseError> {
url/src/lib.rs:390:    /// Creates a relative URL if possible, with this URL as the base URL.
url/src/lib.rs:392:    /// This is the inverse of [`join`].
url/src/lib.rs:403:    /// let relative = base.make_relative(&url);
url/src/lib.rs:404:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("c.png"));
url/src/lib.rs:408:    /// let relative = base.make_relative(&url);
url/src/lib.rs:409:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("c.png"));
url/src/lib.rs:413:    /// let relative = base.make_relative(&url);
url/src/lib.rs:414:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("../d/c.png"));
url/src/lib.rs:418:    /// let relative = base.make_relative(&url);
url/src/lib.rs:419:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("?e=f"));
url/src/lib.rs:430:    /// [`join`]: #method.join
url/src/lib.rs:431:    pub fn make_relative(&self, url: &Url) -> Option<String> {
url/src/lib.rs:432:        if self.cannot_be_a_base() {
url/src/lib.rs:444:        let mut relative = String::new();
url/src/lib.rs:469:        // Add `..` segments for the remainder of the base path
url/src/lib.rs:470:        for base_path_segment in base_path {
url/src/lib.rs:471:            // Skip empty last segments
url/src/lib.rs:472:            if base_path_segment.is_empty() {
url/src/lib.rs:476:            if !relative.is_empty() {
url/src/lib.rs:477:                relative.push('/');
url/src/lib.rs:480:            relative.push_str("..");
url/src/lib.rs:484:        for url_path_segment in url_path {
url/src/lib.rs:485:            if !relative.is_empty() {
url/src/lib.rs:486:                relative.push('/');
url/src/lib.rs:489:            relative.push_str(url_path_segment);
url/src/lib.rs:493:        if !relative.is_empty() || base_filename != url_filename {
url/src/lib.rs:499:                relative.push('/');
url/src/lib.rs:501:                if !relative.is_empty() {
url/src/lib.rs:502:                    relative.push('/');
url/src/lib.rs:504:                relative.push_str(url_filename);
url/src/lib.rs:510:            relative.push('?');
url/src/lib.rs:511:            relative.push_str(query);
url/src/lib.rs:515:            relative.push('#');
url/src/lib.rs:516:            relative.push_str(fragment);
url/src/lib.rs:519:        Some(relative)
url/src/lib.rs:660:                    if SchemeType::from(self.scheme()).is_special() {
url/src/lib.rs:851:    /// of a special URL, or percent encoded for non-special URLs.
url/src/lib.rs:853:    /// Ports are omitted if they match the well known port of a special URL.
url/src/lib.rs:890:    /// meaning that parsing a relative URL string with this URL as the base will return an error.
url/src/lib.rs:903:    /// assert!(!url.cannot_be_a_base());
url/src/lib.rs:906:    /// assert!(!url.cannot_be_a_base());
url/src/lib.rs:909:    /// assert!(url.cannot_be_a_base());
url/src/lib.rs:915:    pub fn cannot_be_a_base(&self) -> bool {
url/src/lib.rs:1016:    /// of a special URL, or percent encoded for non-special URLs.
url/src/lib.rs:1056:    /// of a special URL, or percent encoded for non-special URLs.
url/src/lib.rs:1096:    /// of a special URL, or percent encoded for non-special URLs.
url/src/lib.rs:1243:    /// and continues with slash-separated path segments.
url/src/lib.rs:1273:    /// return an iterator of '/' slash-separated path segments,
url/src/lib.rs:1289:    /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
url/src/lib.rs:1290:    /// assert_eq!(path_segments.next(), Some("foo"));
url/src/lib.rs:1291:    /// assert_eq!(path_segments.next(), Some("bar"));
url/src/lib.rs:1292:    /// assert_eq!(path_segments.next(), None);
url/src/lib.rs:1295:    /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
url/src/lib.rs:1296:    /// assert_eq!(path_segments.next(), Some(""));
url/src/lib.rs:1297:    /// assert_eq!(path_segments.next(), None);
url/src/lib.rs:1300:    /// assert!(url.path_segments().is_none());
url/src/lib.rs:1303:    /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
url/src/lib.rs:1304:    /// assert_eq!(path_segments.next(), Some("countries"));
url/src/lib.rs:1305:    /// assert_eq!(path_segments.next(), Some("vi%E1%BB%87t%20nam"));
url/src/lib.rs:1310:    pub fn path_segments(&self) -> Option<str::Split<'_, char>> {
url/src/lib.rs:1636:        let cannot_be_a_base = self.cannot_be_a_base();
url/src/lib.rs:1640:            if cannot_be_a_base {
url/src/lib.rs:1645:                parser.parse_cannot_be_a_base_path(parser::Input::new(path));
url/src/lib.rs:1654:    /// Return an object with methods to manipulate this URL’s path segments.
url/src/lib.rs:1658:    pub fn path_segments_mut(&mut self) -> Result<PathSegmentsMut<'_>, ()> {
url/src/lib.rs:1659:        if self.cannot_be_a_base() {
url/src/lib.rs:1662:            Ok(path_segments::new(self))
url/src/lib.rs:1743:        // has_host implies !cannot_be_a_base
url/src/lib.rs:1832:    /// Cannot remove host for 'special' schemes (e.g. `http`):
url/src/lib.rs:1876:        if self.cannot_be_a_base() {
url/src/lib.rs:1883:            if host.is_empty() && scheme_type.is_special() && !scheme_type.is_file() {
url/src/lib.rs:1901:            if SchemeType::from(self.scheme()).is_special() {
url/src/lib.rs:1907:            if scheme_type.is_special() && !scheme_type.is_file() {
url/src/lib.rs:2021:        if self.cannot_be_a_base() {
url/src/lib.rs:2061:        // has_host implies !cannot_be_a_base
url/src/lib.rs:2154:        // has_host implies !cannot_be_a_base
url/src/lib.rs:2320:        // If url’s scheme is a special scheme and buffer is not a special scheme, then return.
url/src/lib.rs:2321:        if (new_scheme_type.is_special() && !old_scheme_type.is_special()) ||
url/src/lib.rs:2322:            // If url’s scheme is not a special scheme and buffer is a special scheme, then return.
url/src/lib.rs:2323:            (!new_scheme_type.is_special() && old_scheme_type.is_special()) ||
url/src/lib.rs:2331:        if !remaining.is_empty() || (!self.has_host() && new_scheme_type.is_special()) {
url/src/lib.rs:2398:        let (host_end, host) = path_to_file_url_segments(path.as_ref(), &mut serialization)?;
url/src/lib.rs:2550:        if let Some(segments) = self.path_segments() {
url/src/lib.rs:2559:            return file_url_segments_to_pathbuf(host, segments);
url/src/lib.rs:2620:            .field("cannot_be_a_base", &self.cannot_be_a_base())
url/src/lib.rs:2752:fn path_to_file_url_segments(
url/src/lib.rs:2782:fn path_to_file_url_segments(
url/src/lib.rs:2786:    path_to_file_url_segments_windows(path, serialization)
url/src/lib.rs:2791:fn path_to_file_url_segments_windows(
url/src/lib.rs:2854:fn file_url_segments_to_pathbuf(
url/src/lib.rs:2856:    segments: str::Split<'_, char>,
url/src/lib.rs:2874:    for segment in segments {
url/src/lib.rs:2876:        bytes.extend(percent_decode(segment.as_bytes()));
url/src/lib.rs:2899:fn file_url_segments_to_pathbuf(
url/src/lib.rs:2901:    segments: str::Split<char>,
url/src/lib.rs:2903:    file_url_segments_to_pathbuf_windows(host, segments)
url/src/lib.rs:2908:fn file_url_segments_to_pathbuf_windows(
url/src/lib.rs:2910:    mut segments: str::Split<'_, char>,
url/src/lib.rs:2915:        let first = segments.next().ok_or(())?;
url/src/lib.rs:2942:    for segment in segments {
url/src/lib.rs:2946:        match String::from_utf8(percent_decode(segment.as_bytes()).collect()) {

shell

rg -n "fn .*serialize|impl Display|serialization|as_str|String" url/src/lib.rs url/src/parser.rs url/src/slicing.rs

output

Chunk ID: f9ddd9
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 6752
Output:
url/src/parser.rs:272:            let utf8 = self.chars.as_str();
url/src/parser.rs:322:    pub serialization: String,
url/src/parser.rs:351:    pub fn for_setter(serialization: String) -> Parser<'a> {
url/src/parser.rs:353:            serialization,
url/src/parser.rs:391:        debug_assert!(self.serialization.is_empty());
url/src/parser.rs:395:                    self.serialization.push(c.to_ascii_lowercase())
url/src/parser.rs:399:                    self.serialization.clear();
url/src/parser.rs:408:            self.serialization.clear();
url/src/parser.rs:415:        let scheme_end = to_u32(self.serialization.len())?;
url/src/parser.rs:416:        let scheme_type = SchemeType::from(&self.serialization);
url/src/parser.rs:417:        self.serialization.push(':');
url/src/parser.rs:428:                self.serialization.clear();
url/src/parser.rs:436:                        && base_url.scheme() == &self.serialization[..scheme_end as usize]
url/src/parser.rs:440:                        self.serialization.clear();
url/src/parser.rs:449:                        .collect::<String>()
url/src/parser.rs:470:        let path_start = to_u32(self.serialization.len())?;
url/src/parser.rs:477:            let path_start = self.serialization.len();
url/src/parser.rs:478:            self.serialization.push('/');
url/src/parser.rs:504:        debug_assert!(self.serialization.is_empty());
url/src/parser.rs:513:                self.serialization.push_str("file://");
url/src/parser.rs:518:                let mut host_end = to_u32(self.serialization.len())?;
url/src/parser.rs:523:                    let path_start = self.serialization.len();
url/src/parser.rs:524:                    self.serialization.push('/');
url/src/parser.rs:531:                    self.serialization
url/src/parser.rs:539:                    serialization: self.serialization,
url/src/parser.rs:551:                self.serialization.push_str("file://");
url/src/parser.rs:560:                            self.serialization.push('/');
url/src/parser.rs:561:                            self.serialization.push_str(first_segment);
url/src/parser.rs:563:                            self.serialization.push_str(host_str);
url/src/parser.rs:564:                            host_end = self.serialization.len();
url/src/parser.rs:590:                    serialization: self.serialization,
url/src/parser.rs:608:                        Some(i) => &base_url.serialization[..i as usize],
url/src/parser.rs:609:                        None => &*base_url.serialization,
url/src/parser.rs:611:                    self.serialization.push_str(before_fragment);
url/src/parser.rs:613:                        serialization: self.serialization,
url/src/parser.rs:621:                        (None, None) => &*base_url.serialization,
url/src/parser.rs:624:                    self.serialization.push_str(before_query);
url/src/parser.rs:628:                        serialization: self.serialization,
url/src/parser.rs:638:                            (None, None) => &*base_url.serialization,
url/src/parser.rs:641:                        self.serialization.push_str(before_query);
url/src/parser.rs:661:                        self.serialization.push_str("file:///");
url/src/parser.rs:670:                            serialization: self.serialization,
url/src/parser.rs:685:            self.serialization.push_str("file:///");
url/src/parser.rs:693:                serialization: self.serialization,
url/src/parser.rs:714:        debug_assert!(self.serialization.is_empty());
url/src/parser.rs:720:                    Some(i) => &base_url.serialization[..i as usize],
url/src/parser.rs:721:                    None => &*base_url.serialization,
url/src/parser.rs:723:                self.serialization.push_str(before_fragment);
url/src/parser.rs:725:                    serialization: self.serialization,
url/src/parser.rs:733:                    (None, None) => &*base_url.serialization,
url/src/parser.rs:736:                self.serialization.push_str(before_query);
url/src/parser.rs:740:                    serialization: self.serialization,
url/src/parser.rs:754:                            .collect::<String>()
url/src/parser.rs:759:                    self.serialization
url/src/parser.rs:767:                self.serialization.push_str(base_url.slice(..path_start));
url/src/parser.rs:768:                self.serialization.push('/');
url/src/parser.rs:789:                    (None, None) => &*base_url.serialization,
url/src/parser.rs:792:                self.serialization.push_str(before_query);
url/src/parser.rs:797:                if self.serialization.len() == base_url.path_start as usize
url/src/parser.rs:800:                    self.serialization.push('/');
url/src/parser.rs:834:        self.serialization.push('/');
url/src/parser.rs:835:        self.serialization.push('/');
url/src/parser.rs:837:        let before_authority = self.serialization.len();
url/src/parser.rs:839:        let has_authority = before_authority != self.serialization.len();
url/src/parser.rs:841:        let host_start = to_u32(self.serialization.len())?;
url/src/parser.rs:848:        let path_start = to_u32(self.serialization.len())?;
url/src/parser.rs:889:            None => return Ok((to_u32(self.serialization.len())?, input)),
url/src/parser.rs:900:                return Ok((to_u32(self.serialization.len())?, remaining));
url/src/parser.rs:913:                username_end = Some(to_u32(self.serialization.len())?);
url/src/parser.rs:916:                    self.serialization.push(':');
url/src/parser.rs:924:                self.serialization
url/src/parser.rs:930:            None => to_u32(self.serialization.len())?,
url/src/parser.rs:933:            self.serialization.push('@');
url/src/parser.rs:945:        write!(&mut self.serialization, "{}", host).unwrap();
url/src/parser.rs:946:        let host_end = to_u32(self.serialization.len())?;
url/src/parser.rs:960:            let scheme = || default_port(&self.serialization[..scheme_end as usize]);
url/src/parser.rs:966:            write!(&mut self.serialization, ":{}", port).unwrap()
url/src/parser.rs:974:    ) -> ParseResult<(Host<String>, Input<'_>)> {
url/src/parser.rs:980:        let input_str = input.chars.as_str();
url/src/parser.rs:1005:        let replaced: String;
url/src/parser.rs:1028:    fn get_file_host(input: Input<'_>) -> ParseResult<(Host<String>, Input<'_>)> {
url/src/parser.rs:1053:                    write!(&mut self.serialization, "{}", host).unwrap();
url/src/parser.rs:1062:    pub fn file_host(input: Input) -> ParseResult<(bool, String, Input)> {
url/src/parser.rs:1065:        let input_str = input.chars.as_str();
url/src/parser.rs:1077:        let replaced: String;
url/src/parser.rs:1133:        let path_start = self.serialization.len();
url/src/parser.rs:1142:            if !self.serialization.ends_with('/') {
url/src/parser.rs:1143:                self.serialization.push('/');
url/src/parser.rs:1160:            self.serialization.push('/');
url/src/parser.rs:1175:            let segment_start = self.serialization.len();
url/src/parser.rs:1186:                        self.serialization.push(c);
url/src/parser.rs:1194:                        self.serialization.push('/');
url/src/parser.rs:1206:                                self.serialization
url/src/parser.rs:1209:                                self.serialization
url/src/parser.rs:1213:                            self.serialization.extend(utf8_percent_encode(utf8_c, PATH));
url/src/parser.rs:1219:                &self.serialization[segment_start..self.serialization.len() - 1]
url/src/parser.rs:1221:                &self.serialization[segment_start..self.serialization.len()]
url/src/parser.rs:1227:                    debug_assert!(self.serialization.as_bytes()[segment_start - 1] == b'/');
url/src/parser.rs:1228:                    self.serialization.truncate(segment_start);
url/src/parser.rs:1229:                    if self.serialization.ends_with('/')
url/src/parser.rs:1230:                        && Parser::last_slash_can_be_removed(&self.serialization, path_start)
url/src/parser.rs:1232:                        self.serialization.pop();
url/src/parser.rs:1237:                    if ends_with_slash && !self.serialization.ends_with('/') {
url/src/parser.rs:1238:                        self.serialization.push('/');
url/src/parser.rs:1244:                    self.serialization.truncate(segment_start);
url/src/parser.rs:1245:                    if !self.serialization.ends_with('/') {
url/src/parser.rs:1246:                        self.serialization.push('/');
url/src/parser.rs:1254:                            self.serialization.truncate(segment_start);
url/src/parser.rs:1255:                            self.serialization.push(c);
url/src/parser.rs:1256:                            self.serialization.push(':');
url/src/parser.rs:1258:                                self.serialization.push('/');
url/src/parser.rs:1279:            let path = self.serialization.split_off(path_start);
url/src/parser.rs:1280:            self.serialization.push('/');
url/src/parser.rs:1281:            self.serialization.push_str(path.trim_start_matches('/'));
url/src/parser.rs:1287:    fn last_slash_can_be_removed(serialization: &str, path_start: usize) -> bool {
url/src/parser.rs:1288:        let url_before_segment = &serialization[..serialization.len() - 1];
url/src/parser.rs:1293:                && !path_starts_with_windows_drive_letter(&serialization[segment_before_start..])
url/src/parser.rs:1302:        if self.serialization.len() == path_start {
url/src/parser.rs:1307:            && is_normalized_windows_drive_letter(&self.serialization[path_start..])
url/src/parser.rs:1317:        if self.serialization.len() > path_start {
url/src/parser.rs:1318:            let slash_position = self.serialization[path_start..].rfind('/').unwrap();
url/src/parser.rs:1323:                && is_normalized_windows_drive_letter(&self.serialization[segment_start..]))
url/src/parser.rs:1325:                self.serialization.truncate(segment_start);
url/src/parser.rs:1339:                    self.serialization
url/src/parser.rs:1363:            serialization: self.serialization,
url/src/parser.rs:1387:                query_start = Some(to_u32(self.serialization.len())?);
url/src/parser.rs:1388:                self.serialization.push('?');
url/src/parser.rs:1400:        let fragment_start = to_u32(self.serialization.len())?;
url/src/parser.rs:1401:        self.serialization.push('#');
url/src/parser.rs:1412:        let len = input.chars.as_str().len();
url/src/parser.rs:1413:        let mut query = String::with_capacity(len); // FIXME: use a streaming decoder instead
url/src/parser.rs:1425:        let encoding = match &self.serialization[..scheme_end as usize] {
url/src/parser.rs:1439:        self.serialization.extend(percent_encode(&query_bytes, set));
url/src/parser.rs:1446:            None => &*base_url.serialization,
url/src/parser.rs:1448:        debug_assert!(self.serialization.is_empty());
url/src/parser.rs:1449:        self.serialization
url/src/parser.rs:1450:            .reserve(before_fragment.len() + input.chars.as_str().len());
url/src/parser.rs:1451:        self.serialization.push_str(before_fragment);
url/src/parser.rs:1452:        self.serialization.push('#');
url/src/parser.rs:1457:            serialization: self.serialization,
url/src/parser.rs:1470:            self.serialization
url/src/slicing.rs:15:        &self.serialization
url/src/slicing.rs:22:        &self.serialization[self.index(range.start)..]
url/src/slicing.rs:29:        &self.serialization[..self.index(range.end)]
url/src/slicing.rs:36:        &self.serialization[self.index(range.start)..self.index(range.end)]
url/src/slicing.rs:47:/// let serialization: &str = &some_url[..];
url/src/slicing.rs:48:/// let serialization_without_fragment: &str = &some_url[..Position::AfterQuery];
url/src/slicing.rs:159:                (None, None) => self.serialization.len(),
url/src/slicing.rs:168:                (None, None) => self.serialization.len(),
url/src/slicing.rs:172:                None => self.serialization.len(),
url/src/slicing.rs:181:                None => self.serialization.len(),
url/src/slicing.rs:184:            Position::AfterFragment => self.serialization.len(),
url/src/lib.rs:105:assert_eq!(css_url.as_str(), "http://servo.[code-host]/rust-url/main.css");
url/src/lib.rs:180:    serialization: String,
url/src/lib.rs:231:    /// assert_eq!(url.as_str(), "https://example.com/");
url/src/lib.rs:246:            serialization: String::with_capacity(input.len()),
url/src/lib.rs:296:    /// assert_eq!("https://example.net/?dont=clobberme&lang=rust&browser=servo", url.as_str());
url/src/lib.rs:340:            .serialization
url/src/lib.rs:346:        let start = self.serialization.len() - trailing_space_count;
url/src/lib.rs:348:        self.serialization.truncate(start);
url/src/lib.rs:368:    /// assert_eq!(url.as_str(), "https://example.net/a/c.png");  // Not /a/b.html/c.png
url/src/lib.rs:372:    /// assert_eq!(url.as_str(), "https://example.net/a/b/c.png");
url/src/lib.rs:404:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("c.png"));
url/src/lib.rs:409:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("c.png"));
url/src/lib.rs:414:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("../d/c.png"));
url/src/lib.rs:419:    /// assert_eq!(relative.as_ref().map(|s| s.as_str()), Some("?e=f"));
url/src/lib.rs:431:    pub fn make_relative(&self, url: &Url) -> Option<String> {
url/src/lib.rs:444:        let mut relative = String::new();
url/src/lib.rs:536:    /// assert_eq!(version_url.as_str(), "https://api.example.com/version.json");
url/src/lib.rs:549:    /// Return the serialization of this URL.
url/src/lib.rs:551:    /// This is fast since that serialization is already stored in the `Url` struct.
url/src/lib.rs:562:    /// assert_eq!(url.as_str(), url_str);
url/src/lib.rs:568:    pub fn as_str(&self) -> &str {
url/src/lib.rs:569:        &self.serialization
url/src/lib.rs:572:    /// Return the serialization of this URL.
url/src/lib.rs:574:    /// This consumes the `Url` and takes ownership of the `String` stored in it.
url/src/lib.rs:585:    /// assert_eq!(String::from(url), url_str);
url/src/lib.rs:591:    #[deprecated(since = "2.3.0", note = "use Into<String>")]
url/src/lib.rs:592:    pub fn into_string(self) -> String {
url/src/lib.rs:602:    pub fn check_invariants(&self) -> Result<(), String> {
url/src/lib.rs:609:                        self.serialization
url/src/lib.rs:623:                                           self.serialization))
url/src/lib.rs:639:            if self.username_end != self.serialization.len() as u32 {
url/src/lib.rs:656:                    let h: Host<String> = Host::Ipv6(address);
url/src/lib.rs:676:                self.path_start as usize == self.serialization.len()
url/src/lib.rs:700:        let other = Url::parse(self.as_str()).expect("Failed to parse myself?");
url/src/lib.rs:701:        assert_eq!(&self.serialization, &other.serialization);
url/src/lib.rs:978:            && self.username_end != self.serialization.len() as u32
url/src/lib.rs:1126:    /// Note that default port numbers are never reflected by the serialization,
url/src/lib.rs:1422:        let mut parser = Parser::for_setter(mem::take(&mut self.serialization));
url/src/lib.rs:1424:        self.serialization = parser.serialization;
url/src/lib.rs:1438:    /// assert_eq!(url.as_str(), "https://example.com/data.csv");
url/src/lib.rs:1441:    /// assert_eq!(url.as_str(), "https://example.com/data.csv#cell=4,1-6,2");
url/src/lib.rs:1445:    /// assert_eq!(url.as_str(), "https://example.com/data.csv");
url/src/lib.rs:1455:            self.serialization.truncate(start as usize);
url/src/lib.rs:1459:            self.fragment_start = Some(to_u32(self.serialization.len()).unwrap());
url/src/lib.rs:1460:            self.serialization.push('#');
url/src/lib.rs:1468:    fn take_fragment(&mut self) -> Option<String> {
url/src/lib.rs:1472:            self.serialization.truncate(start as usize);
url/src/lib.rs:1477:    fn restore_already_parsed_fragment(&mut self, fragment: Option<String>) {
url/src/lib.rs:1480:            self.fragment_start = Some(to_u32(self.serialization.len()).unwrap());
url/src/lib.rs:1481:            self.serialization.push('#');
url/src/lib.rs:1482:            self.serialization.push_str(fragment);
url/src/lib.rs:1496:    /// assert_eq!(url.as_str(), "https://example.com/products");
url/src/lib.rs:1499:    /// assert_eq!(url.as_str(), "https://example.com/products?page=2");
url/src/lib.rs:1511:            self.serialization.truncate(start as usize);
url/src/lib.rs:1515:            self.query_start = Some(to_u32(self.serialization.len()).unwrap());
url/src/lib.rs:1516:            self.serialization.push('?');
url/src/lib.rs:1549:    /// assert_eq!(url.as_str(), "https://example.net/?lang=fr&foo=bar#nav");
url/src/lib.rs:1556:    /// assert_eq!(url.as_str(),
url/src/lib.rs:1575:            query_start = self.serialization.len();
url/src/lib.rs:1577:            self.serialization.push('?');
url/src/lib.rs:1587:    fn take_after_path(&mut self) -> String {
url/src/lib.rs:1591:                self.serialization.truncate(i as usize);
url/src/lib.rs:1594:            (None, None) => String::new(),
url/src/lib.rs:1609:    /// assert_eq!(url.as_str(), "https://example.com/api/comments");
url/src/lib.rs:1614:    /// assert_eq!(url.as_str(), "https://example.com/data/report.csv");
url/src/lib.rs:1620:    /// assert_eq!(url.as_str(), "https://example.com/api/some%20comments");
url/src/lib.rs:1626:    /// assert_eq!(url.as_str(), "https://example.com/api/some%20comments");
url/src/lib.rs:1635:        let old_after_path_pos = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:1638:        self.serialization.truncate(self.path_start as usize);
url/src/lib.rs:1642:                    parser.serialization.push_str("%2F");
url/src/lib.rs:1667:        let new_after_path_position = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:1678:        self.serialization.push_str(after_path)
url/src/lib.rs:1683:    /// Note that default port numbers are not reflected in the serialization.
url/src/lib.rs:1698:    /// assert_eq!(url.as_str(), "ssh://example.net:4096/");
url/src/lib.rs:1701:    /// assert_eq!(url.as_str(), "ssh://example.net/");
url/src/lib.rs:1758:                self.serialization
url/src/lib.rs:1772:                self.serialization.truncate(self.host_end as usize);
url/src/lib.rs:1773:                write!(&mut self.serialization, ":{}", new).unwrap();
url/src/lib.rs:1775:                let new_path_start = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:1787:                self.serialization.push_str(&path_and_after);
url/src/lib.rs:1810:    /// assert_eq!(url.as_str(), "https://rust-lang.org/");
url/src/lib.rs:1826:    /// assert_eq!(url.as_str(), "foo:/");
url/src/lib.rs:1842:    /// assert_eq!(url.as_str(), "https://example.net/");
url/src/lib.rs:1859:    /// assert_eq!(url.as_str(), "mailto:rms@example.net");
url/src/lib.rs:1863:    /// assert_eq!(url.as_str(), "mailto:rms@example.net");
url/src/lib.rs:1909:            } else if self.serialization.len() == self.path_start as usize {
url/src/lib.rs:1910:                self.serialization.push('/');
url/src/lib.rs:1921:            self.serialization
url/src/lib.rs:1940:    fn set_host_internal(&mut self, host: Host<String>, opt_new_port: Option<Option<u16>>) {
url/src/lib.rs:1947:        self.serialization.truncate(self.host_start as usize);
url/src/lib.rs:1951:            self.serialization.push('/');
url/src/lib.rs:1952:            self.serialization.push('/');
url/src/lib.rs:1956:        write!(&mut self.serialization, "{}", host).unwrap();
url/src/lib.rs:1957:        self.host_end = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:1963:                write!(&mut self.serialization, ":{}", port).unwrap();
url/src/lib.rs:1966:        let new_suffix_pos = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:1967:        self.serialization.push_str(&suffix);
url/src/lib.rs:1997:    /// assert_eq!(url.as_str(), "http://127.0.0.1/");
url/src/lib.rs:2012:    /// assert_eq!(url.as_str(), "mailto:rms@example.com");
url/src/lib.rs:2067:            self.serialization.truncate(self.username_end as usize);
url/src/lib.rs:2068:            self.serialization.push(':');
url/src/lib.rs:2069:            self.serialization
url/src/lib.rs:2071:            self.serialization.push('@');
url/src/lib.rs:2074:            let new_host_start = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:2089:            self.serialization.push_str(&host_and_after);
url/src/lib.rs:2102:            self.serialization.drain(start as usize..end as usize);
url/src/lib.rs:2130:    /// assert_eq!(url.as_str(), "mailto:rmz@example.com");
url/src/lib.rs:2147:    /// assert_eq!(url.as_str(), "ftp://user1:secre1@example.com/");
url/src/lib.rs:2164:        self.serialization.truncate(username_start as usize);
url/src/lib.rs:2165:        self.serialization
url/src/lib.rs:2169:        self.username_end = to_u32(self.serialization.len()).unwrap();
url/src/lib.rs:2176:                self.serialization.push_str(&after_username[1..]);
url/src/lib.rs:2179:                self.serialization.push_str(&after_username);
url/src/lib.rs:2183:                self.serialization.push('@');
url/src/lib.rs:2184:                self.serialization.push_str(&after_username);
url/src/lib.rs:2231:    /// assert_eq!(url.as_str(), "http://example.net/");
url/src/lib.rs:2246:    /// assert_eq!(url.as_str(), "bar://example.net");
url/src/lib.rs:2262:    /// assert_eq!(url.as_str(), "https://example.net/");
url/src/lib.rs:2278:    /// assert_eq!(url.as_str(), "mailto:rms@example.net");
url/src/lib.rs:2293:    /// assert_eq!(url.as_str(), "foo://example.net");
url/src/lib.rs:2308:    /// assert_eq!(url.as_str(), "http://example.net/");
url/src/lib.rs:2316:        let mut parser = Parser::for_setter(String::new());
url/src/lib.rs:2318:        let new_scheme_type = SchemeType::from(&parser.serialization);
url/src/lib.rs:2335:        let new_scheme_end = to_u32(parser.serialization.len()).unwrap();
url/src/lib.rs:2353:        parser.serialization.push_str(self.slice(old_scheme_end..));
url/src/lib.rs:2354:        self.serialization = parser.serialization;
url/src/lib.rs:2381:    /// assert_eq!(url.as_str(), "file:///tmp/foo.txt");
url/src/lib.rs:2396:        let mut serialization = "file://".to_owned();
url/src/lib.rs:2397:        let host_start = serialization.len() as u32;
url/src/lib.rs:2398:        let (host_end, host) = path_to_file_url_segments(path.as_ref(), &mut serialization)?;
url/src/lib.rs:2400:            serialization,
url/src/lib.rs:2434:        if !url.serialization.ends_with('/') {
url/src/lib.rs:2435:            url.serialization.push('/')
url/src/lib.rs:2448:    pub fn serialize_internal<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
url/src/lib.rs:2456:            ref serialization,
url/src/lib.rs:2468:            serialization,
url/src/lib.rs:2490:    pub fn deserialize_internal<'de, D>(deserializer: D) -> Result<Self, D::Error>
url/src/lib.rs:2496:            serialization,
url/src/lib.rs:2508:            serialization,
url/src/lib.rs:2554:                    Some(&self.serialization[self.host_start as usize..self.host_end as usize])
url/src/lib.rs:2571:        range.slice_of(&self.serialization)
url/src/lib.rs:2576:        self.serialization.as_bytes()[i as usize]
url/src/lib.rs:2598:/// Display the serialization of this URL.
url/src/lib.rs:2602:        fmt::Display::fmt(&self.serialization, formatter)
url/src/lib.rs:2606:/// String conversion.
url/src/lib.rs:2607:impl From<Url> for String {
url/src/lib.rs:2608:    fn from(value: Url) -> String {
url/src/lib.rs:2609:        value.serialization
url/src/lib.rs:2613:/// Debug the serialization of this URL.
url/src/lib.rs:2632:/// URLs compare like their serialization.
url/src/lib.rs:2635:/// URLs compare like their serialization.
url/src/lib.rs:2639:        self.serialization == other.serialization
url/src/lib.rs:2643:/// URLs compare like their serialization.
url/src/lib.rs:2647:        self.serialization.cmp(&other.serialization)
url/src/lib.rs:2651:/// URLs compare like their serialization.
url/src/lib.rs:2655:        self.serialization.partial_cmp(&other.serialization)
url/src/lib.rs:2659:/// URLs hash like their serialization.
url/src/lib.rs:2666:        hash::Hash::hash(&self.serialization, state)
url/src/lib.rs:2670:/// Return the serialization of this URL.
url/src/lib.rs:2674:        &self.serialization
url/src/lib.rs:2708:    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
url/src/lib.rs:2712:        serializer.serialize_str(self.as_str())
url/src/lib.rs:2721:    fn deserialize<D>(deserializer: D) -> Result<Url, D::Error>
url/src/lib.rs:2742:                    Error::invalid_value(Unexpected::Str(s), &err_s.as_str())
url/src/lib.rs:2754:    serialization: &mut String,
url/src/lib.rs:2763:    let host_end = to_u32(serialization.len()).unwrap();
url/src/lib.rs:2768:        serialization.push('/');
url/src/lib.rs:2769:        serialization.extend(percent_encode(
url/src/lib.rs:2776:        serialization.push('/');
url/src/lib.rs:2784:    serialization: &mut String,
url/src/lib.rs:2786:    path_to_file_url_segments_windows(path, serialization)
url/src/lib.rs:2793:    serialization: &mut String,
url/src/lib.rs:2801:    let host_start = serialization.len() + 1;
url/src/lib.rs:2808:                host_end = to_u32(serialization.len()).unwrap();
url/src/lib.rs:2810:                serialization.push('/');
url/src/lib.rs:2811:                serialization.push(letter as char);
url/src/lib.rs:2812:                serialization.push(':');
url/src/lib.rs:2816:                write!(serialization, "{}", host).unwrap();
url/src/lib.rs:2817:                host_end = to_u32(serialization.len()).unwrap();
url/src/lib.rs:2819:                serialization.push('/');
url/src/lib.rs:2821:                serialization.extend(percent_encode(share.as_bytes(), PATH_SEGMENT));
url/src/lib.rs:2838:        serialization.push('/');
url/src/lib.rs:2839:        serialization.extend(percent_encode(component.as_bytes(), PATH_SEGMENT));
url/src/lib.rs:2843:    if serialization.len() > host_start
url/src/lib.rs:2844:        && parser::is_windows_drive_letter(&serialization[host_start..])
url/src/lib.rs:2847:        serialization.push('/');
url/src/lib.rs:2946:        match String::from_utf8(percent_decode(segment.as_bytes()).collect()) {
url/src/lib.rs:2963:    fragment: Option<String>,
url/src/lib.rs:2966:// `as_mut_string` string here exposes the internal serialization of an `Url`,
url/src/lib.rs:2977:    fn as_mut_string(&mut self) -> &mut String {
url/src/lib.rs:2978:        &mut self.url.as_mut().unwrap().serialization

shell

sed -n '160,210p' url/src/lib.rs

output

Chunk ID: ae8a55
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 398
Output:
mod origin;
mod parser;
mod path_segments;
mod slicing;

#[doc(hidden)]
pub mod quirks;

/// A parsed URL record.
#[derive(Clone)]
pub struct Url {
    /// Syntax in pseudo-BNF:
    ///
    ///   url = scheme ":" [ hierarchical | non-hierarchical ] [ "?" query ]? [ "#" fragment ]?
    ///   non-hierarchical = non-hierarchical-path
    ///   non-hierarchical-path = /* Does not start with "/" */
    ///   hierarchical = authority? hierarchical-path
    ///   authority = "//" userinfo? host [ ":" port ]?
    ///   userinfo = username [ ":" password ]? "@"
    ///   hierarchical-path = [ "/" path-segment ]+
    serialization: String,

    // Components
    scheme_end: u32,  // Before ':'
    username_end: u32, // Before ':' (if a password is given) or '@' (if not)
    host_start: u32,
    host_end: u32,
    host: HostInternal,
    port: Option<u16>,
    path_start: u32,            // Before initial '/', if any
    query_start: Option<u32>,   // Before '?', unlike Position::QueryStart
    fragment_start: Option<u32>, // Before '#', unlike Position::FragmentStart
}

/// Full configuration for the URL parser.
#[derive(Copy, Clone)]
pub struct ParseOptions<'a> {
    base_url: Option<&'a Url>,
    encoding_override: EncodingOverride<'a>,
    violation_fn: Option<&'a dyn Fn(SyntaxViolation)>,
}

impl<'a> ParseOptions<'a> {
    /// Change the base URL
    pub fn base_url(mut self, new: Option<&'a Url>) -> Self {
        self.base_url = new;
        self
    }

    /// Override the character encoding of query strings.
    /// This is a legacy concept only relevant for HTML.

shell

sed -n '580,725p' url/src/lib.rs

output

Chunk ID: 95cece
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1472
Output:
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let url_str = "https://example.net/";
    /// let url = Url::parse(url_str)?;
    /// assert_eq!(String::from(url), url_str);
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    #[inline]
    #[deprecated(since = "2.3.0", note = "use Into<String>")]
    pub fn into_string(self) -> String {
        self.into()
    }

    /// For internal testing, not part of the public API.
    ///
    /// Methods of the `Url` struct assume a number of invariants.
    /// This checks each of these invariants and panic if one is not met.
    /// This is for testing rust-url itself.
    #[doc(hidden)]
    pub fn check_invariants(&self) -> Result<(), String> {
        macro_rules! assert {
            ($x: expr) => {
                if !$x {
                    return Err(format!(
                        "!( {} ) for URL {:?}",
                        stringify!($x),
                        self.serialization
                    ));
                }
            };
        }

        macro_rules! assert_eq {
            ($a: expr, $b: expr) => {
                {
                    let a = $a;
                    let b = $b;
                    if a != b {
                        return Err(format!("{:?} != {:?} ({} != {}) for URL {:?}",
                                           a, b, stringify!($a), stringify!($b),
                                           self.serialization))
                    }
                }
            }
        }

        assert!(self.scheme_end >= 1);
        assert!(self.byte_at(0).is_ascii_alphabetic());
        assert!(self
            .slice(1..self.scheme_end)
            .chars()
            .all(|c| matches!(c, 'a'..='z' | 'A'..='Z' | '0'..='9' | '+' | '-' | '.')));
        assert_eq!(self.byte_at(self.scheme_end), b':');

        if self.slice(self.scheme_end + 1..).starts_with("//") {
            // URL with authority
            if self.username_end != self.serialization.len() as u32 {
                match self.byte_at(self.username_end) {
                    b':' => {
                        assert!(self.host_start >= self.username_end + 2);
                        assert_eq!(self.byte_at(self.host_start - 1), b'@');
                    }
                    b'@' => assert!(self.host_start == self.username_end + 1),
                    _ => assert_eq!(self.username_end, self.scheme_end + 3),
                }
            }
            assert!(self.host_start >= self.username_end);
            assert!(self.host_end >= self.host_start);
            let host_str = self.slice(self.host_start..self.host_end);
            match self.host {
                HostInternal::None => assert_eq!(host_str, ""),
                HostInternal::Ipv4(address) => assert_eq!(host_str, address.to_string()),
                HostInternal::Ipv6(address) => {
                    let h: Host<String> = Host::Ipv6(address);
                    assert_eq!(host_str, h.to_string())
                }
                HostInternal::Domain => {
                    if SchemeType::from(self.scheme()).is_special() {
                        assert!(!host_str.is_empty())
                    }
                }
            }
            if self.path_start == self.host_end {
                assert_eq!(self.port, None);
            } else {
                assert_eq!(self.byte_at(self.host_end), b':');
                let port_str = self.slice(self.host_end + 1..self.path_start);
                assert_eq!(
                    self.port,
                    Some(port_str.parse::<u16>().expect("Couldn't parse port?"))
                );
            }
            assert!(
                self.path_start as usize == self.serialization.len()
                    || matches!(self.byte_at(self.path_start), b'/' | b'#' | b'?')
            );
        } else {
            // Anarchist URL (no authority)
            assert_eq!(self.username_end, self.scheme_end + 1);
            assert_eq!(self.host_start, self.scheme_end + 1);
            assert_eq!(self.host_end, self.scheme_end + 1);
            assert_eq!(self.host, HostInternal::None);
            assert_eq!(self.port, None);
            assert_eq!(self.path_start, self.scheme_end + 1);
        }
        if let Some(start) = self.query_start {
            assert!(start >= self.path_start);
            assert_eq!(self.byte_at(start), b'?');
        }
        if let Some(start) = self.fragment_start {
            assert!(start >= self.path_start);
            assert_eq!(self.byte_at(start), b'#');
        }
        if let (Some(query_start), Some(fragment_start)) = (self.query_start, self.fragment_start) {
            assert!(fragment_start > query_start);
        }

        let other = Url::parse(self.as_str()).expect("Failed to parse myself?");
        assert_eq!(&self.serialization, &other.serialization);
        assert_eq!(self.scheme_end, other.scheme_end);
        assert_eq!(self.username_end, other.username_end);
        assert_eq!(self.host_start, other.host_start);
        assert_eq!(self.host_end, other.host_end);
        assert!(
            self.host == other.host ||
                // XXX No host round-trips to empty host.
                // See https://[code-host]/whatwg/url/issues/79
                (self.host_str(), other.host_str()) == (None, Some(""))
        );
        assert_eq!(self.port, other.port);
        assert_eq!(self.path_start, other.path_start);
        assert_eq!(self.query_start, other.query_start);
        assert_eq!(self.fragment_start, other.fragment_start);
        Ok(())
    }

    /// Return the origin of this URL (<https://url.spec.whatwg.org/#origin>)
    ///
    /// Note: this returns an opaque origin for `file:` URLs, which causes
    /// `url.origin() != url.origin()`.
    ///
    /// # Examples
    ///

shell

sed -n '450,500p' url/src/parser.rs

output

Chunk ID: 34f208
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 409
Output:
                        != "//"
                });
                self.after_double_slash(remaining, scheme_type, scheme_end)
            }
            SchemeType::NotSpecial => self.parse_non_special(input, scheme_type, scheme_end),
        }
    }

    /// Scheme other than file, http, https, ws, ws, ftp.
    fn parse_non_special(
        mut self,
        input: Input<'_>,
        scheme_type: SchemeType,
        scheme_end: u32,
    ) -> ParseResult<Url> {
        // path or authority state (
        if let Some(input) = input.split_prefix("//") {
            return self.after_double_slash(input, scheme_type, scheme_end);
        }
        // Anarchist URL (no authority)
        let path_start = to_u32(self.serialization.len())?;
        let username_end = path_start;
        let host_start = path_start;
        let host_end = path_start;
        let host = HostInternal::None;
        let port = None;
        let remaining = if let Some(input) = input.split_prefix('/') {
            let path_start = self.serialization.len();
            self.serialization.push('/');
            self.parse_path(scheme_type, &mut false, path_start, input)
        } else {
            self.parse_cannot_be_a_base_path(input)
        };
        self.with_query_and_fragment(
            scheme_type,
            scheme_end,
            username_end,
            host_start,
            host_end,
            host,
            port,
            path_start,
            remaining,
        )
    }

    fn parse_file(
        mut self,
        input: Input<'_>,
        scheme_type: SchemeType,
        base_file_url: Option<&Url>,

shell

sed -n '707,835p' url/src/parser.rs

output

Chunk ID: 36c351
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1381
Output:
    fn parse_relative(
        mut self,
        input: Input<'_>,
        scheme_type: SchemeType,
        base_url: &Url,
    ) -> ParseResult<Url> {
        // relative state
        debug_assert!(self.serialization.is_empty());
        let (first_char, input_after_first_char) = input.split_first();
        match first_char {
            None => {
                // Copy everything except the fragment
                let before_fragment = match base_url.fragment_start {
                    Some(i) => &base_url.serialization[..i as usize],
                    None => &*base_url.serialization,
                };
                self.serialization.push_str(before_fragment);
                Ok(Url {
                    serialization: self.serialization,
                    fragment_start: None,
                    ..*base_url
                })
            }
            Some('?') => {
                // Copy everything up to the query string
                let before_query = match (base_url.query_start, base_url.fragment_start) {
                    (None, None) => &*base_url.serialization,
                    (Some(i), _) | (None, Some(i)) => base_url.slice(..i),
                };
                self.serialization.push_str(before_query);
                let (query_start, fragment_start) =
                    self.parse_query_and_fragment(scheme_type, base_url.scheme_end, input)?;
                Ok(Url {
                    serialization: self.serialization,
                    query_start,
                    fragment_start,
                    ..*base_url
                })
            }
            Some('#') => self.fragment_only(base_url, input),
            Some('/') | Some('\\') => {
                let (slashes_count, remaining) = input.count_matching(|c| matches!(c, '/' | '\\'));
                if slashes_count >= 2 {
                    self.log_violation_if(SyntaxViolation::ExpectedDoubleSlash, || {
                        input
                            .clone()
                            .take_while(|&c| matches!(c, '/' | '\\'))
                            .collect::<String>()
                            != "//"
                    });
                    let scheme_end = base_url.scheme_end;
                    debug_assert!(base_url.byte_at(scheme_end) == b':');
                    self.serialization
                        .push_str(base_url.slice(..scheme_end + 1));
                    if let Some(after_prefix) = input.split_prefix("//") {
                        return self.after_double_slash(after_prefix, scheme_type, scheme_end);
                    }
                    return self.after_double_slash(remaining, scheme_type, scheme_end);
                }
                let path_start = base_url.path_start;
                self.serialization.push_str(base_url.slice(..path_start));
                self.serialization.push('/');
                let remaining = self.parse_path(
                    scheme_type,
                    &mut true,
                    path_start as usize,
                    input_after_first_char,
                );
                self.with_query_and_fragment(
                    scheme_type,
                    base_url.scheme_end,
                    base_url.username_end,
                    base_url.host_start,
                    base_url.host_end,
                    base_url.host,
                    base_url.port,
                    base_url.path_start,
                    remaining,
                )
            }
            _ => {
                let before_query = match (base_url.query_start, base_url.fragment_start) {
                    (None, None) => &*base_url.serialization,
                    (Some(i), _) | (None, Some(i)) => base_url.slice(..i),
                };
                self.serialization.push_str(before_query);
                // FIXME spec says just "remove last entry", not the "pop" algorithm
                self.pop_path(scheme_type, base_url.path_start as usize);
                // A special url always has a path.
                // A path always starts with '/'
                if self.serialization.len() == base_url.path_start as usize
                    && (SchemeType::from(base_url.scheme()).is_special() || !input.is_empty())
                {
                    self.serialization.push('/');
                }
                let remaining = match input.split_first() {
                    (Some('/'), remaining) => self.parse_path(
                        scheme_type,
                        &mut true,
                        base_url.path_start as usize,
                        remaining,
                    ),
                    _ => {
                        self.parse_path(scheme_type, &mut true, base_url.path_start as usize, input)
                    }
                };
                self.with_query_and_fragment(
                    scheme_type,
                    base_url.scheme_end,
                    base_url.username_end,
                    base_url.host_start,
                    base_url.host_end,
                    base_url.host,
                    base_url.port,
                    base_url.path_start,
                    remaining,
                )
            }
        }
    }

    fn after_double_slash(
        mut self,
        input: Input<'_>,
        scheme_type: SchemeType,
        scheme_end: u32,
    ) -> ParseResult<Url> {
        self.serialization.push('/');
        self.serialization.push('/');

shell

sed -n '1127,1335p' url/src/parser.rs

output

Chunk ID: 97e483
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 2392
Output:
    pub fn parse_path_start<'i>(
        &mut self,
        scheme_type: SchemeType,
        has_host: &mut bool,
        input: Input<'i>,
    ) -> Input<'i> {
        let path_start = self.serialization.len();
        let (maybe_c, remaining) = input.split_first();
        // If url is special, then:
        if scheme_type.is_special() {
            if maybe_c == Some('\\') {
                // If c is U+005C (\), validation error.
                self.log_violation(SyntaxViolation::Backslash);
            }
            // A special URL always has a non-empty path.
            if !self.serialization.ends_with('/') {
                self.serialization.push('/');
                // We have already made sure the forward slash is present.
                if maybe_c == Some('/') || maybe_c == Some('\\') {
                    return self.parse_path(scheme_type, has_host, path_start, remaining);
                }
            }
            return self.parse_path(scheme_type, has_host, path_start, input);
        } else if maybe_c == Some('?') || maybe_c == Some('#') {
            // Otherwise, if state override is not given and c is U+003F (?),
            // set url’s query to the empty string and state to query state.
            // Otherwise, if state override is not given and c is U+0023 (#),
            // set url’s fragment to the empty string and state to fragment state.
            // The query and path states will be handled by the caller.
            return input;
        }

        if maybe_c.is_some() && maybe_c != Some('/') {
            self.serialization.push('/');
        }
        // Otherwise, if c is not the EOF code point:
        self.parse_path(scheme_type, has_host, path_start, input)
    }

    pub fn parse_path<'i>(
        &mut self,
        scheme_type: SchemeType,
        has_host: &mut bool,
        path_start: usize,
        mut input: Input<'i>,
    ) -> Input<'i> {
        // Relative path state
        loop {
            let segment_start = self.serialization.len();
            let mut ends_with_slash = false;
            loop {
                let input_before_c = input.clone();
                let (c, utf8_c) = if let Some(x) = input.next_utf8() {
                    x
                } else {
                    break;
                };
                match c {
                    '/' if self.context != Context::PathSegmentSetter => {
                        self.serialization.push(c);
                        ends_with_slash = true;
                        break;
                    }
                    '\\' if self.context != Context::PathSegmentSetter
                        && scheme_type.is_special() =>
                    {
                        self.log_violation(SyntaxViolation::Backslash);
                        self.serialization.push('/');
                        ends_with_slash = true;
                        break;
                    }
                    '?' | '#' if self.context == Context::UrlParser => {
                        input = input_before_c;
                        break;
                    }
                    _ => {
                        self.check_url_code_point(c, &input);
                        if self.context == Context::PathSegmentSetter {
                            if scheme_type.is_special() {
                                self.serialization
                                    .extend(utf8_percent_encode(utf8_c, SPECIAL_PATH_SEGMENT));
                            } else {
                                self.serialization
                                    .extend(utf8_percent_encode(utf8_c, PATH_SEGMENT));
                            }
                        } else {
                            self.serialization.extend(utf8_percent_encode(utf8_c, PATH));
                        }
                    }
                }
            }
            let segment_before_slash = if ends_with_slash {
                &self.serialization[segment_start..self.serialization.len() - 1]
            } else {
                &self.serialization[segment_start..self.serialization.len()]
            };
            match segment_before_slash {
                // If buffer is a double-dot path segment, shorten url’s path,
                ".." | "%2e%2e" | "%2e%2E" | "%2E%2e" | "%2E%2E" | "%2e." | "%2E." | ".%2e"
                | ".%2E" => {
                    debug_assert!(self.serialization.as_bytes()[segment_start - 1] == b'/');
                    self.serialization.truncate(segment_start);
                    if self.serialization.ends_with('/')
                        && Parser::last_slash_can_be_removed(&self.serialization, path_start)
                    {
                        self.serialization.pop();
                    }
                    self.shorten_path(scheme_type, path_start);

                    // and then if neither c is U+002F (/), nor url is special and c is U+005C (\), append the empty string to url’s path.
                    if ends_with_slash && !self.serialization.ends_with('/') {
                        self.serialization.push('/');
                    }
                }
                // Otherwise, if buffer is a single-dot path segment and if neither c is U+002F (/),
                // nor url is special and c is U+005C (\), append the empty string to url’s path.
                "." | "%2e" | "%2E" => {
                    self.serialization.truncate(segment_start);
                    if !self.serialization.ends_with('/') {
                        self.serialization.push('/');
                    }
                }
                _ => {
                    // If url’s scheme is "file", url’s path is empty, and buffer is a Windows drive letter, then
                    if scheme_type.is_file() && is_windows_drive_letter(segment_before_slash) {
                        // Replace the second code point in buffer with U+003A (:).
                        if let Some(c) = segment_before_slash.chars().next() {
                            self.serialization.truncate(segment_start);
                            self.serialization.push(c);
                            self.serialization.push(':');
                            if ends_with_slash {
                                self.serialization.push('/');
                            }
                        }
                        // If url’s host is neither the empty string nor null,
                        // validation error, set url’s host to the empty string.
                        if *has_host {
                            self.log_violation(SyntaxViolation::FileWithHostAndWindowsDrive);
                            *has_host = false; // FIXME account for this in callers
                        }
                    }
                }
            }
            if !ends_with_slash {
                break;
            }
        }
        if scheme_type.is_file() {
            // while url’s path’s size is greater than 1
            // and url’s path[0] is the empty string,
            // validation error, remove the first item from url’s path.
            //FIXME: log violation
            let path = self.serialization.split_off(path_start);
            self.serialization.push('/');
            self.serialization.push_str(path.trim_start_matches('/'));
        }

        input
    }

    fn last_slash_can_be_removed(serialization: &str, path_start: usize) -> bool {
        let url_before_segment = &serialization[..serialization.len() - 1];
        if let Some(segment_before_start) = url_before_segment.rfind('/') {
            // Do not remove the root slash
            segment_before_start >= path_start
                // Or a windows drive letter slash
                && !path_starts_with_windows_drive_letter(&serialization[segment_before_start..])
        } else {
            false
        }
    }

    /// https://url.spec.whatwg.org/#shorten-a-urls-path
    fn shorten_path(&mut self, scheme_type: SchemeType, path_start: usize) {
        // If path is empty, then return.
        if self.serialization.len() == path_start {
            return;
        }
        // If url’s scheme is "file", path’s size is 1, and path[0] is a normalized Windows drive letter, then return.
        if scheme_type.is_file()
            && is_normalized_windows_drive_letter(&self.serialization[path_start..])
        {
            return;
        }
        // Remove path’s last item.
        self.pop_path(scheme_type, path_start);
    }

    /// https://url.spec.whatwg.org/#pop-a-urls-path
    fn pop_path(&mut self, scheme_type: SchemeType, path_start: usize) {
        if self.serialization.len() > path_start {
            let slash_position = self.serialization[path_start..].rfind('/').unwrap();
            // + 1 since rfind returns the position before the slash.
            let segment_start = path_start + slash_position + 1;
            // Don’t pop a Windows drive letter
            if !(scheme_type.is_file()
                && is_normalized_windows_drive_letter(&self.serialization[segment_start..]))
            {
                self.serialization.truncate(segment_start);
            }
        }
    }

    pub fn parse_cannot_be_a_base_path<'i>(&mut self, mut input: Input<'i>) -> Input<'i> {
        loop {
            let input_before_c = input.clone();
            match input.next_utf8() {
                Some(('?', _)) | Some(('#', _)) if self.context == Context::UrlParser => {
                    return input_before_c

shell

sed -n '81,186p' url/src/slicing.rs

output

Chunk ID: c70916
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 879
Output:
pub enum Position {
    BeforeScheme,
    AfterScheme,
    BeforeUsername,
    AfterUsername,
    BeforePassword,
    AfterPassword,
    BeforeHost,
    AfterHost,
    BeforePort,
    AfterPort,
    BeforePath,
    AfterPath,
    BeforeQuery,
    AfterQuery,
    BeforeFragment,
    AfterFragment,
}

impl Url {
    #[inline]
    fn index(&self, position: Position) -> usize {
        match position {
            Position::BeforeScheme => 0,

            Position::AfterScheme => self.scheme_end as usize,

            Position::BeforeUsername => {
                if self.has_authority() {
                    self.scheme_end as usize + "://".len()
                } else {
                    debug_assert!(self.byte_at(self.scheme_end) == b':');
                    debug_assert!(self.scheme_end + ":".len() as u32 == self.username_end);
                    self.scheme_end as usize + ":".len()
                }
            }

            Position::AfterUsername => self.username_end as usize,

            Position::BeforePassword => {
                if self.has_authority() && self.byte_at(self.username_end) == b':' {
                    self.username_end as usize + ":".len()
                } else {
                    debug_assert!(self.username_end == self.host_start);
                    self.username_end as usize
                }
            }

            Position::AfterPassword => {
                if self.has_authority() && self.byte_at(self.username_end) == b':' {
                    debug_assert!(self.byte_at(self.host_start - "@".len() as u32) == b'@');
                    self.host_start as usize - "@".len()
                } else {
                    debug_assert!(self.username_end == self.host_start);
                    self.host_start as usize
                }
            }

            Position::BeforeHost => self.host_start as usize,

            Position::AfterHost => self.host_end as usize,

            Position::BeforePort => {
                if self.port.is_some() {
                    debug_assert!(self.byte_at(self.host_end) == b':');
                    self.host_end as usize + ":".len()
                } else {
                    self.host_end as usize
                }
            }

            Position::AfterPort => self.path_start as usize,

            Position::BeforePath => self.path_start as usize,

            Position::AfterPath => match (self.query_start, self.fragment_start) {
                (Some(q), _) => q as usize,
                (None, Some(f)) => f as usize,
                (None, None) => self.serialization.len(),
            },

            Position::BeforeQuery => match (self.query_start, self.fragment_start) {
                (Some(q), _) => {
                    debug_assert!(self.byte_at(q) == b'?');
                    q as usize + "?".len()
                }
                (None, Some(f)) => f as usize,
                (None, None) => self.serialization.len(),
            },

            Position::AfterQuery => match self.fragment_start {
                None => self.serialization.len(),
                Some(f) => f as usize,
            },

            Position::BeforeFragment => match self.fragment_start {
                Some(f) => {
                    debug_assert!(self.byte_at(f) == b'#');
                    f as usize + "#".len()
                }
                None => self.serialization.len(),
            },

            Position::AfterFragment => self.serialization.len(),
        }
    }

The current representation stores component offsets into the serialized string, so the marker cannot be a hidden field without touching API shape. I’m going to keep it as serialized bytes and make path access/position logic interpret the marker boundary where needed.

shell

sed -n '840,930p' url/src/lib.rs

output

Chunk ID: 522d5b
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 798
Output:
    /// # run().unwrap();
    /// ```
    #[inline]
    pub fn has_authority(&self) -> bool {
        debug_assert!(self.byte_at(self.scheme_end) == b':');
        self.slice(self.scheme_end..).starts_with("://")
    }

    /// Return the authority of this URL as an ASCII string.
    ///
    /// Non-ASCII domains are punycode-encoded per IDNA if this is the host
    /// of a special URL, or percent encoded for non-special URLs.
    /// IPv6 addresses are given between `[` and `]` brackets.
    /// Ports are omitted if they match the well known port of a special URL.
    ///
    /// Username and password are percent-encoded.
    ///
    /// See also the `has_authority` method.
    ///
    /// # Examples
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let url = Url::parse("unix:/run/foo.socket")?;
    /// assert_eq!(url.authority(), "");
    /// let url = Url::parse("file:///tmp/foo")?;
    /// assert_eq!(url.authority(), "");
    /// let url = Url::parse("https://user:password@example.com/tmp/foo")?;
    /// assert_eq!(url.authority(), "user:password@example.com");
    /// let url = Url::parse("irc://àlex.рф.example.com:6667/foo")?;
    /// assert_eq!(url.authority(), "%C3%A0lex.%D1%80%D1%84.example.com:6667");
    /// let url = Url::parse("http://àlex.рф.example.com:80/foo")?;
    /// assert_eq!(url.authority(), "xn--lex-8ka.xn--p1ai.example.com");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn authority(&self) -> &str {
        let scheme_separator_len = "://".len() as u32;
        if self.has_authority() && self.path_start > self.scheme_end + scheme_separator_len {
            self.slice(self.scheme_end + scheme_separator_len..self.path_start)
        } else {
            ""
        }
    }

    /// Return whether this URL is a cannot-be-a-base URL,
    /// meaning that parsing a relative URL string with this URL as the base will return an error.
    ///
    /// This is the case if the scheme and `:` delimiter are not followed by a `/` slash,
    /// as is typically the case of `data:` and `mailto:` URLs.
    ///
    /// # Examples
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let url = Url::parse("ftp://rms@example.com")?;
    /// assert!(!url.cannot_be_a_base());
    ///
    /// let url = Url::parse("unix:/run/foo.socket")?;
    /// assert!(!url.cannot_be_a_base());
    ///
    /// let url = Url::parse("data:text/plain,Stuff")?;
    /// assert!(url.cannot_be_a_base());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    #[inline]
    pub fn cannot_be_a_base(&self) -> bool {
        !self.slice(self.scheme_end + 1..).starts_with('/')
    }

    /// Return the username for this URL (typically the empty string)
    /// as a percent-encoded ASCII string.
    ///
    /// # Examples
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let url = Url::parse("ftp://rms@example.com")?;
    /// assert_eq!(url.username(), "rms");

shell

sed -n '1240,1320p' url/src/lib.rs

output

Chunk ID: 766ade
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 764
Output:
    /// Return the path for this URL, as a percent-encoded ASCII string.
    /// For cannot-be-a-base URLs, this is an arbitrary string that doesn’t start with '/'.
    /// For other URLs, this starts with a '/' slash
    /// and continues with slash-separated path segments.
    ///
    /// # Examples
    ///
    /// ```rust
    /// use url::{Url, ParseError};
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let url = Url::parse("https://example.com/api/versions?page=2")?;
    /// assert_eq!(url.path(), "/api/versions");
    ///
    /// let url = Url::parse("https://example.com")?;
    /// assert_eq!(url.path(), "/");
    ///
    /// let url = Url::parse("https://example.com/countries/việt nam")?;
    /// assert_eq!(url.path(), "/countries/vi%E1%BB%87t%20nam");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn path(&self) -> &str {
        match (self.query_start, self.fragment_start) {
            (None, None) => self.slice(self.path_start..),
            (Some(next_component_start), _) | (None, Some(next_component_start)) => {
                self.slice(self.path_start..next_component_start)
            }
        }
    }

    /// Unless this URL is cannot-be-a-base,
    /// return an iterator of '/' slash-separated path segments,
    /// each as a percent-encoded ASCII string.
    ///
    /// Return `None` for cannot-be-a-base URLs.
    ///
    /// When `Some` is returned, the iterator always contains at least one string
    /// (which may be empty).
    ///
    /// # Examples
    ///
    /// ```
    /// use url::Url;
    /// # use std::error::Error;
    ///
    /// # fn run() -> Result<(), Box<dyn Error>> {
    /// let url = Url::parse("https://example.com/foo/bar")?;
    /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
    /// assert_eq!(path_segments.next(), Some("foo"));
    /// assert_eq!(path_segments.next(), Some("bar"));
    /// assert_eq!(path_segments.next(), None);
    ///
    /// let url = Url::parse("https://example.com")?;
    /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
    /// assert_eq!(path_segments.next(), Some(""));
    /// assert_eq!(path_segments.next(), None);
    ///
    /// let url = Url::parse("data:text/plain,HelloWorld")?;
    /// assert!(url.path_segments().is_none());
    ///
    /// let url = Url::parse("https://example.com/countries/việt nam")?;
    /// let mut path_segments = url.path_segments().ok_or_else(|| "cannot be base")?;
    /// assert_eq!(path_segments.next(), Some("countries"));
    /// assert_eq!(path_segments.next(), Some("vi%E1%BB%87t%20nam"));
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn path_segments(&self) -> Option<str::Split<'_, char>> {
        let path = self.path();
        path.strip_prefix('/').map(|remainder| remainder.split('/'))
    }

    /// Return this URL’s query string, if any, as a percent-encoded ASCII string.
    ///
    /// # Examples
    ///
    /// ```rust
    /// use url::Url;

shell

sed -n '1580,1690p' url/src/lib.rs

output

Chunk ID: a62a09
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1030
Output:
        let query = UrlQuery {
            url: Some(self),
            fragment,
        };
        form_urlencoded::Serializer::for_suffix(query, query_start + "?".len())
    }

    fn take_after_path(&mut self) -> String {
        match (self.query_start, self.fragment_start) {
            (Some(i), _) | (None, Some(i)) => {
                let after_path = self.slice(i..).to_owned();
                self.serialization.truncate(i as usize);
                after_path
            }
            (None, None) => String::new(),
        }
    }

    /// Change this URL’s path.
    ///
    /// # Examples
    ///
    /// ```rust
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("https://example.com")?;
    /// url.set_path("api/comments");
    /// assert_eq!(url.as_str(), "https://example.com/api/comments");
    /// assert_eq!(url.path(), "/api/comments");
    ///
    /// let mut url = Url::parse("https://example.com/api")?;
    /// url.set_path("data/report.csv");
    /// assert_eq!(url.as_str(), "https://example.com/data/report.csv");
    /// assert_eq!(url.path(), "/data/report.csv");
    ///
    /// // `set_path` percent-encodes the given string if it's not already percent-encoded.
    /// let mut url = Url::parse("https://example.com")?;
    /// url.set_path("api/some comments");
    /// assert_eq!(url.as_str(), "https://example.com/api/some%20comments");
    /// assert_eq!(url.path(), "/api/some%20comments");
    ///
    /// // `set_path` will not double percent-encode the string if it's already percent-encoded.
    /// let mut url = Url::parse("https://example.com")?;
    /// url.set_path("api/some%20comments");
    /// assert_eq!(url.as_str(), "https://example.com/api/some%20comments");
    /// assert_eq!(url.path(), "/api/some%20comments");
    ///
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn set_path(&mut self, mut path: &str) {
        let after_path = self.take_after_path();
        let old_after_path_pos = to_u32(self.serialization.len()).unwrap();
        let cannot_be_a_base = self.cannot_be_a_base();
        let scheme_type = SchemeType::from(self.scheme());
        self.serialization.truncate(self.path_start as usize);
        self.mutate(|parser| {
            if cannot_be_a_base {
                if path.starts_with('/') {
                    parser.serialization.push_str("%2F");
                    path = &path[1..];
                }
                parser.parse_cannot_be_a_base_path(parser::Input::new(path));
            } else {
                let mut has_host = true; // FIXME
                parser.parse_path_start(scheme_type, &mut has_host, parser::Input::new(path));
            }
        });
        self.restore_after_path(old_after_path_pos, &after_path);
    }

    /// Return an object with methods to manipulate this URL’s path segments.
    ///
    /// Return `Err(())` if this URL is cannot-be-a-base.
    #[allow(clippy::result_unit_err)]
    pub fn path_segments_mut(&mut self) -> Result<PathSegmentsMut<'_>, ()> {
        if self.cannot_be_a_base() {
            Err(())
        } else {
            Ok(path_segments::new(self))
        }
    }

    fn restore_after_path(&mut self, old_after_path_position: u32, after_path: &str) {
        let new_after_path_position = to_u32(self.serialization.len()).unwrap();
        let adjust = |index: &mut u32| {
            *index -= old_after_path_position;
            *index += new_after_path_position;
        };
        if let Some(ref mut index) = self.query_start {
            adjust(index)
        }
        if let Some(ref mut index) = self.fragment_start {
            adjust(index)
        }
        self.serialization.push_str(after_path)
    }

    /// Change this URL’s port number.
    ///
    /// Note that default port numbers are not reflected in the serialization.
    ///
    /// If this URL is cannot-be-a-base, does not have a host, or has the `file` scheme;
    /// do nothing and return `Err`.
    ///
    /// # Examples
    ///
    /// ```

shell

sed -n '1340,1380p' url/src/parser.rs

output

Chunk ID: 87373a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 273
Output:
                        .extend(utf8_percent_encode(utf8_c, CONTROLS));
                }
                None => return input,
            }
        }
    }

    #[allow(clippy::too_many_arguments)]
    fn with_query_and_fragment(
        mut self,
        scheme_type: SchemeType,
        scheme_end: u32,
        username_end: u32,
        host_start: u32,
        host_end: u32,
        host: HostInternal,
        port: Option<u16>,
        path_start: u32,
        remaining: Input<'_>,
    ) -> ParseResult<Url> {
        let (query_start, fragment_start) =
            self.parse_query_and_fragment(scheme_type, scheme_end, remaining)?;
        Ok(Url {
            serialization: self.serialization,
            scheme_end,
            username_end,
            host_start,
            host_end,
            host,
            port,
            path_start,
            query_start,
            fragment_start,
        })
    }

    /// Return (query_start, fragment_start)
    fn parse_query_and_fragment(
        &mut self,
        scheme_type: SchemeType,
        scheme_end: u32,

shell

rg -n "Position::|check_invariants|join\(|non_special|cannot_be_a_base|path\(\)" url/tests url/src -g '*.rs'

output

Chunk ID: 2c4fbd
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 2617
Output:
url/tests/data.rs:58:            base.join(&input)
url/tests/data.rs:86:        passed &= check_invariants(&url, &format!("invariants for {:?}", input), None);
url/tests/data.rs:138:            passed &= check_invariants(&url, &name, comment_ref);
url/tests/data.rs:147:            passed &= check_invariants(&url, &name, comment_ref);
url/tests/data.rs:154:fn check_invariants(url: &Url, name: &str, comment: Option<&str>) -> bool {
url/tests/data.rs:156:    if let Err(e) = url.check_invariants() {
url/src/slicing.rs:48:/// let serialization_without_fragment: &str = &some_url[..Position::AfterQuery];
url/src/slicing.rs:49:/// let authority: &str = &some_url[Position::BeforeUsername..Position::AfterPort];
url/src/slicing.rs:50:/// let data_url_payload: &str = &some_url[Position::BeforePath..Position::AfterQuery];
url/src/slicing.rs:51:/// let scheme_relative: &str = &some_url[Position::BeforeUsername..];
url/src/slicing.rs:104:            Position::BeforeScheme => 0,
url/src/slicing.rs:106:            Position::AfterScheme => self.scheme_end as usize,
url/src/slicing.rs:108:            Position::BeforeUsername => {
url/src/slicing.rs:118:            Position::AfterUsername => self.username_end as usize,
url/src/slicing.rs:120:            Position::BeforePassword => {
url/src/slicing.rs:129:            Position::AfterPassword => {
url/src/slicing.rs:139:            Position::BeforeHost => self.host_start as usize,
url/src/slicing.rs:141:            Position::AfterHost => self.host_end as usize,
url/src/slicing.rs:143:            Position::BeforePort => {
url/src/slicing.rs:152:            Position::AfterPort => self.path_start as usize,
url/src/slicing.rs:154:            Position::BeforePath => self.path_start as usize,
url/src/slicing.rs:156:            Position::AfterPath => match (self.query_start, self.fragment_start) {
url/src/slicing.rs:162:            Position::BeforeQuery => match (self.query_start, self.fragment_start) {
url/src/slicing.rs:171:            Position::AfterQuery => match self.fragment_start {
url/src/slicing.rs:176:            Position::BeforeFragment => match self.fragment_start {
url/src/slicing.rs:184:            Position::AfterFragment => self.serialization.len(),
url/src/origin.rs:18:            let result = Url::parse(url.path());
url/src/quirks.rs:143:    &url[Position::BeforeHost..Position::AfterPort]
url/src/quirks.rs:150:    if url.cannot_be_a_base() {
url/src/quirks.rs:202:    if url.cannot_be_a_base() {
url/src/quirks.rs:238:    &url[Position::BeforePort..Position::AfterPort]
url/src/quirks.rs:246:        // has_host implies !cannot_be_a_base
url/src/quirks.rs:268:    url.path()
url/src/quirks.rs:273:    if url.cannot_be_a_base() {
url/src/quirks.rs:291:    trim(&url[Position::AfterPath..Position::AfterQuery])
url/src/quirks.rs:305:    trim(&url[Position::AfterQuery..])
url/tests/unit.rs:26:    let url = base.join("/resources/testharness.js").unwrap();
url/tests/unit.rs:33:    let url = base.join("").unwrap();
url/tests/unit.rs:38:fn test_strip_trailing_spaces_from_opaque_path() {
url/tests/unit.rs:92:        assert_eq!(url.path(), $url_path);
url/tests/unit.rs:93:        assert_eq!(url.to_file_path(), Ok(PathBuf::from($path)));
url/tests/unit.rs:125:    assert_eq!(url.to_file_path(), Ok(PathBuf::from(os_str)));
url/tests/unit.rs:137:            .to_file_path()
url/tests/unit.rs:146:        assert_eq!(url.to_file_path(), Ok(PathBuf::from(r"C:\foo\bar")));
url/tests/unit.rs:158:        assert_eq!(url.path(), "/foo/bar/");
url/tests/unit.rs:171:        assert_eq!(url.path(), "/C:/foo/bar/");
url/tests/unit.rs:208:    assert_eq!(url.path(), "/a");
url/tests/unit.rs:210:    assert_eq!(url.path(), "/...");
url/tests/unit.rs:212:    assert_eq!(url.path(), "/");
url/tests/unit.rs:402:    url.check_invariants().unwrap();
url/tests/unit.rs:410:    url.check_invariants().unwrap();
url/tests/unit.rs:422:    Url::parse("mailto:").unwrap().cannot_be_a_base();
url/tests/unit.rs:429:    url.check_invariants().unwrap();
url/tests/unit.rs:431:    url.check_invariants().unwrap();
url/tests/unit.rs:441:    url.check_invariants().unwrap();
url/tests/unit.rs:447:    url.check_invariants().unwrap();
url/tests/unit.rs:458:    url.check_invariants().unwrap();
url/tests/unit.rs:460:    url.check_invariants().unwrap();
url/tests/unit.rs:627:    assert!(no_base_url.cannot_be_a_base());
url/tests/unit.rs:636:    assert_eq!(no_base_url.path(), "%2Ffoo");
url/tests/unit.rs:771:fn test_windows_unc_path() {
url/tests/unit.rs:785:    let path = url.to_file_path().unwrap();
url/tests/unit.rs:830:    assert_eq!(url.path(), "/path");
url/tests/unit.rs:884:fn test_url_from_file_path() {
url/tests/unit.rs:890:    let path = u.to_file_path().unwrap();
url/tests/unit.rs:897:fn test_url_from_file_path() {
url/tests/unit.rs:903:    let path = u.to_file_path().unwrap();
url/tests/unit.rs:908:fn test_non_special_path() {
url/tests/unit.rs:913:    assert_eq!(db_url.path(), "/diesel_foo");
url/tests/unit.rs:917:fn test_non_special_path2() {
url/tests/unit.rs:921:    assert_eq!(db_url.path(), "");
url/tests/unit.rs:924:    assert_eq!(db_url.path(), "/foo");
url/tests/unit.rs:927:    assert_eq!(db_url.path(), "/bar");
url/tests/unit.rs:932:fn test_non_special_path3() {
url/tests/unit.rs:937:    assert_eq!(db_url.path(), "/");
url/tests/unit.rs:940:    assert_eq!(db_url.path(), "/foo");
url/tests/unit.rs:967:    use url::Position::*;
url/tests/unit.rs:1153:            base_uri.join(relative).unwrap().as_str(),
url/tests/debugger_visualizer.rs:14:    dx url_with_non_special_scheme
url/tests/debugger_visualizer.rs:34:    url_with_non_special_scheme : "non-special://test/x" [Type: url::Url]
url/tests/debugger_visualizer.rs:79:    let url_with_non_special_scheme = Url::parse("non-special://:@test/x").unwrap();
url/tests/debugger_visualizer.rs:80:    assert_eq!(url_with_non_special_scheme.as_str(), "non-special://test/x");
url/tests/debugger_visualizer.rs:92:    let url_with_base = base_url.join("/a%2fc").unwrap();
url/tests/debugger_visualizer.rs:95:    let url_with_base_replaced = base_url.join("http://[::127.0.0.1]").unwrap();
url/tests/debugger_visualizer.rs:98:    let url_with_comma = base_url.join("data:text/html,test#test").unwrap();
url/src/lib.rs:42:assert!(issue_list_url.path() == "/rust-lang/rust/issues");
url/src/lib.rs:46:assert!(&issue_list_url[Position::BeforePath..] == "/rust-lang/rust/issues?labels=E-easy&state=open");
url/src/lib.rs:48:assert!(!issue_list_url.cannot_be_a_base());
url/src/lib.rs:65:assert!(data_url.cannot_be_a_base());
url/src/lib.rs:67:assert!(data_url.path() == "text/plain,Hello");
url/src/lib.rs:104:let css_url = this_document.join("../main.css")?;
url/src/lib.rs:190:    query_start: Option<u32>,   // Before '?', unlike Position::QueryStart
url/src/lib.rs:191:    fragment_start: Option<u32>, // Before '#', unlike Position::FragmentStart
url/src/lib.rs:327:        if !self.cannot_be_a_base() {
url/src/lib.rs:367:    /// let url = base.join("c.png")?;
url/src/lib.rs:371:    /// let url = base.join("c.png")?;
url/src/lib.rs:386:    pub fn join(&self, input: &str) -> Result<Url, crate::ParseError> {
url/src/lib.rs:432:        if self.cannot_be_a_base() {
url/src/lib.rs:457:        let (base_path, base_filename) = extract_path_filename(self.path());
url/src/lib.rs:458:        let (url_path, url_filename) = extract_path_filename(url.path());
url/src/lib.rs:602:    pub fn check_invariants(&self) -> Result<(), String> {
url/src/lib.rs:903:    /// assert!(!url.cannot_be_a_base());
url/src/lib.rs:906:    /// assert!(!url.cannot_be_a_base());
url/src/lib.rs:909:    /// assert!(url.cannot_be_a_base());
url/src/lib.rs:915:    pub fn cannot_be_a_base(&self) -> bool {
url/src/lib.rs:1252:    /// assert_eq!(url.path(), "/api/versions");
url/src/lib.rs:1255:    /// assert_eq!(url.path(), "/");
url/src/lib.rs:1258:    /// assert_eq!(url.path(), "/countries/vi%E1%BB%87t%20nam");
url/src/lib.rs:1311:        let path = self.path();
url/src/lib.rs:1464:            self.strip_trailing_spaces_from_opaque_path();
url/src/lib.rs:1529:            self.strip_trailing_spaces_from_opaque_path();
url/src/lib.rs:1610:    /// assert_eq!(url.path(), "/api/comments");
url/src/lib.rs:1615:    /// assert_eq!(url.path(), "/data/report.csv");
url/src/lib.rs:1621:    /// assert_eq!(url.path(), "/api/some%20comments");
url/src/lib.rs:1627:    /// assert_eq!(url.path(), "/api/some%20comments");
url/src/lib.rs:1634:        let after_path = self.take_after_path();
url/src/lib.rs:1636:        let cannot_be_a_base = self.cannot_be_a_base();
url/src/lib.rs:1640:            if cannot_be_a_base {
url/src/lib.rs:1645:                parser.parse_cannot_be_a_base_path(parser::Input::new(path));
url/src/lib.rs:1659:        if self.cannot_be_a_base() {
url/src/lib.rs:1743:        // has_host implies !cannot_be_a_base
url/src/lib.rs:1876:        if self.cannot_be_a_base() {
url/src/lib.rs:2021:        if self.cannot_be_a_base() {
url/src/lib.rs:2061:        // has_host implies !cannot_be_a_base
url/src/lib.rs:2154:        // has_host implies !cannot_be_a_base
url/src/lib.rs:2520:            url.check_invariants().map_err(|reason| {
url/src/lib.rs:2538:    /// let path = url.to_file_path();
url/src/lib.rs:2620:            .field("cannot_be_a_base", &self.cannot_be_a_base())
url/src/lib.rs:2625:            .field("path", &self.path())
url/src/lib.rs:2892:        "to_file_path() failed to produce an absolute Path"
url/src/lib.rs:2954:        "to_file_path() failed to produce an absolute Path"
url/src/parser.rs:372:            } else if base_url.cannot_be_a_base() {
url/src/parser.rs:439:                        debug_assert!(!base_url.cannot_be_a_base());
url/src/parser.rs:454:            SchemeType::NotSpecial => self.parse_non_special(input, scheme_type, scheme_end),
url/src/parser.rs:459:    fn parse_non_special(
url/src/parser.rs:481:            self.parse_cannot_be_a_base_path(input)
url/src/parser.rs:1330:    pub fn parse_cannot_be_a_base_path<'i>(&mut self, mut input: Input<'i>) -> Input<'i> {
url/src/path_segments.rs:46:    let after_path = url.take_after_path();
url/src/path_segments.rs:73:    /// Remove all segments in the path, leaving the minimal `url.path() == "/"`.
url/src/path_segments.rs:101:    /// unless it is also the initial slash (so this does nothing if `url.path() == "/")`.
url/src/path_segments.rs:137:    /// If the path only has one segment, make it empty such that `url.path() == "/"`.

shell

sed -n '1,190p' url/src/path_segments.rs

output

Chunk ID: caf744
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1663
Output:
// Copyright 2016 The rust-url developers.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use crate::parser::{self, to_u32, SchemeType};
use crate::Url;
use std::str;

/// Exposes methods to manipulate the path of an URL that is not cannot-be-base.
///
/// The path always starts with a `/` slash, and is made of slash-separated segments.
/// There is always at least one segment (which may be the empty string).
///
/// Examples:
///
/// ```rust
/// use url::Url;
/// # use std::error::Error;
///
/// # fn run() -> Result<(), Box<dyn Error>> {
/// let mut url = Url::parse("mailto:me@example.com")?;
/// assert!(url.path_segments_mut().is_err());
///
/// let mut url = Url::parse("http://example.net/foo/index.html")?;
/// url.path_segments_mut().map_err(|_| "cannot be base")?
///     .pop().push("img").push("2/100%.png");
/// assert_eq!(url.as_str(), "http://example.net/foo/img/2%2F100%25.png");
/// # Ok(())
/// # }
/// # run().unwrap();
/// ```
#[derive(Debug)]
pub struct PathSegmentsMut<'a> {
    url: &'a mut Url,
    after_first_slash: usize,
    after_path: String,
    old_after_path_position: u32,
}

// Not re-exported outside the crate
pub fn new(url: &mut Url) -> PathSegmentsMut<'_> {
    let after_path = url.take_after_path();
    let old_after_path_position = to_u32(url.serialization.len()).unwrap();
    // Special urls always have a non empty path
    if SchemeType::from(url.scheme()).is_special() {
        debug_assert!(url.byte_at(url.path_start) == b'/');
    } else {
        debug_assert!(
            url.serialization.len() == url.path_start as usize
                || url.byte_at(url.path_start) == b'/'
        );
    }
    PathSegmentsMut {
        after_first_slash: url.path_start as usize + "/".len(),
        url,
        old_after_path_position,
        after_path,
    }
}

impl<'a> Drop for PathSegmentsMut<'a> {
    fn drop(&mut self) {
        self.url
            .restore_after_path(self.old_after_path_position, &self.after_path)
    }
}

impl<'a> PathSegmentsMut<'a> {
    /// Remove all segments in the path, leaving the minimal `url.path() == "/"`.
    ///
    /// Returns `&mut Self` so that method calls can be chained.
    ///
    /// Example:
    ///
    /// ```rust
    /// use url::Url;
    /// # use std::error::Error;
    ///
    /// # fn run() -> Result<(), Box<dyn Error>> {
    /// let mut url = Url::parse("https://[code-host]/servo/rust-url/")?;
    /// url.path_segments_mut().map_err(|_| "cannot be base")?
    ///     .clear().push("logout");
    /// assert_eq!(url.as_str(), "https://[code-host]/logout");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn clear(&mut self) -> &mut Self {
        self.url.serialization.truncate(self.after_first_slash);
        self
    }

    /// Remove the last segment of this URL’s path if it is empty,
    /// except if these was only one segment to begin with.
    ///
    /// In other words, remove one path trailing slash, if any,
    /// unless it is also the initial slash (so this does nothing if `url.path() == "/")`.
    ///
    /// Returns `&mut Self` so that method calls can be chained.
    ///
    /// Example:
    ///
    /// ```rust
    /// use url::Url;
    /// # use std::error::Error;
    ///
    /// # fn run() -> Result<(), Box<dyn Error>> {
    /// let mut url = Url::parse("https://[code-host]/servo/rust-url/")?;
    /// url.path_segments_mut().map_err(|_| "cannot be base")?
    ///     .push("pulls");
    /// assert_eq!(url.as_str(), "https://[code-host]/servo/rust-url//pulls");
    ///
    /// let mut url = Url::parse("https://[code-host]/servo/rust-url/")?;
    /// url.path_segments_mut().map_err(|_| "cannot be base")?
    ///     .pop_if_empty().push("pulls");
    /// assert_eq!(url.as_str(), "https://[code-host]/servo/rust-url/pulls");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn pop_if_empty(&mut self) -> &mut Self {
        if self.after_first_slash >= self.url.serialization.len() {
            return self;
        }
        if self.url.serialization[self.after_first_slash..].ends_with('/') {
            self.url.serialization.pop();
        }
        self
    }

    /// Remove the last segment of this URL’s path.
    ///
    /// If the path only has one segment, make it empty such that `url.path() == "/"`.
    ///
    /// Returns `&mut Self` so that method calls can be chained.
    pub fn pop(&mut self) -> &mut Self {
        if self.after_first_slash >= self.url.serialization.len() {
            return self;
        }
        let last_slash = self.url.serialization[self.after_first_slash..]
            .rfind('/')
            .unwrap_or(0);
        self.url
            .serialization
            .truncate(self.after_first_slash + last_slash);
        self
    }

    /// Append the given segment at the end of this URL’s path.
    ///
    /// See the documentation for `.extend()`.
    ///
    /// Returns `&mut Self` so that method calls can be chained.
    pub fn push(&mut self, segment: &str) -> &mut Self {
        self.extend(Some(segment))
    }

    /// Append each segment from the given iterator at the end of this URL’s path.
    ///
    /// Each segment is percent-encoded like in `Url::parse` or `Url::join`,
    /// except that `%` and `/` characters are also encoded (to `%25` and `%2F`).
    /// This is unlike `Url::parse` where `%` is left as-is in case some of the input
    /// is already percent-encoded, and `/` denotes a path segment separator.)
    ///
    /// Note that, in addition to slashes between new segments,
    /// this always adds a slash between the existing path and the new segments
    /// *except* if the existing path is `"/"`.
    /// If the previous last segment was empty (if the path had a trailing slash)
    /// the path after `.extend()` will contain two consecutive slashes.
    /// If that is undesired, call `.pop_if_empty()` first.
    ///
    /// To obtain a behavior similar to `Url::join`, call `.pop()` unconditionally first.
    ///
    /// Returns `&mut Self` so that method calls can be chained.
    ///
    /// Example:
    ///
    /// ```rust
    /// use url::Url;
    /// # use std::error::Error;
    ///
    /// # fn run() -> Result<(), Box<dyn Error>> {
    /// let mut url = Url::parse("https://[code-host]/")?;
    /// let org = "servo";
    /// let repo = "rust-url";
    /// let issue_number = "188";

shell

sed -n '1700,2005p' url/src/lib.rs

output

Chunk ID: 61273a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 2632
Output:
    /// url.set_port(None).map_err(|_| "cannot be base")?;
    /// assert_eq!(url.as_str(), "ssh://example.net/");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Known default port numbers are not reflected:
    ///
    /// ```rust
    /// use url::Url;
    /// # use std::error::Error;
    ///
    /// # fn run() -> Result<(), Box<dyn Error>> {
    /// let mut url = Url::parse("https://example.org/")?;
    ///
    /// url.set_port(Some(443)).map_err(|_| "cannot be base")?;
    /// assert!(url.port().is_none());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Cannot set port for cannot-be-a-base URLs:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("mailto:rms@example.net")?;
    ///
    /// let result = url.set_port(Some(80));
    /// assert!(result.is_err());
    ///
    /// let result = url.set_port(None);
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    #[allow(clippy::result_unit_err)]
    pub fn set_port(&mut self, mut port: Option<u16>) -> Result<(), ()> {
        // has_host implies !cannot_be_a_base
        if !self.has_host() || self.host() == Some(Host::Domain("")) || self.scheme() == "file" {
            return Err(());
        }
        if port.is_some() && port == parser::default_port(self.scheme()) {
            port = None
        }
        self.set_port_internal(port);
        Ok(())
    }

    fn set_port_internal(&mut self, port: Option<u16>) {
        match (self.port, port) {
            (None, None) => {}
            (Some(_), None) => {
                self.serialization
                    .drain(self.host_end as usize..self.path_start as usize);
                let offset = self.path_start - self.host_end;
                self.path_start = self.host_end;
                if let Some(ref mut index) = self.query_start {
                    *index -= offset
                }
                if let Some(ref mut index) = self.fragment_start {
                    *index -= offset
                }
            }
            (Some(old), Some(new)) if old == new => {}
            (_, Some(new)) => {
                let path_and_after = self.slice(self.path_start..).to_owned();
                self.serialization.truncate(self.host_end as usize);
                write!(&mut self.serialization, ":{}", new).unwrap();
                let old_path_start = self.path_start;
                let new_path_start = to_u32(self.serialization.len()).unwrap();
                self.path_start = new_path_start;
                let adjust = |index: &mut u32| {
                    *index -= old_path_start;
                    *index += new_path_start;
                };
                if let Some(ref mut index) = self.query_start {
                    adjust(index)
                }
                if let Some(ref mut index) = self.fragment_start {
                    adjust(index)
                }
                self.serialization.push_str(&path_and_after);
            }
        }
        self.port = port;
    }

    /// Change this URL’s host.
    ///
    /// Removing the host (calling this with `None`)
    /// will also remove any username, password, and port number.
    ///
    /// # Examples
    ///
    /// Change host:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("https://example.net")?;
    /// let result = url.set_host(Some("rust-lang.org"));
    /// assert!(result.is_ok());
    /// assert_eq!(url.as_str(), "https://rust-lang.org/");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Remove host:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("foo://example.net")?;
    /// let result = url.set_host(None);
    /// assert!(result.is_ok());
    /// assert_eq!(url.as_str(), "foo:/");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Cannot remove host for 'special' schemes (e.g. `http`):
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("https://example.net")?;
    /// let result = url.set_host(None);
    /// assert!(result.is_err());
    /// assert_eq!(url.as_str(), "https://example.net/");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Cannot change or remove host for cannot-be-a-base URLs:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("mailto:rms@example.net")?;
    ///
    /// let result = url.set_host(Some("rust-lang.org"));
    /// assert!(result.is_err());
    /// assert_eq!(url.as_str(), "mailto:rms@example.net");
    ///
    /// let result = url.set_host(None);
    /// assert!(result.is_err());
    /// assert_eq!(url.as_str(), "mailto:rms@example.net");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// # Errors
    ///
    /// If this URL is cannot-be-a-base or there is an error parsing the given `host`,
    /// a [`ParseError`] variant will be returned.
    ///
    /// [`ParseError`]: enum.ParseError.html
    pub fn set_host(&mut self, host: Option<&str>) -> Result<(), ParseError> {
        if self.cannot_be_a_base() {
            return Err(ParseError::SetHostOnCannotBeABaseUrl);
        }

        let scheme_type = SchemeType::from(self.scheme());

        if let Some(host) = host {
            if host.is_empty() && scheme_type.is_special() && !scheme_type.is_file() {
                return Err(ParseError::EmptyHost);
            }
            let mut host_substr = host;
            // Otherwise, if c is U+003A (:) and the [] flag is unset, then
            if !host.starts_with('[') || !host.ends_with(']') {
                match host.find(':') {
                    Some(0) => {
                        // If buffer is the empty string, validation error, return failure.
                        return Err(ParseError::InvalidDomainCharacter);
                    }
                    // Let host be the result of host parsing buffer
                    Some(colon_index) => {
                        host_substr = &host[..colon_index];
                    }
                    None => {}
                }
            }
            if SchemeType::from(self.scheme()).is_special() {
                self.set_host_internal(Host::parse(host_substr)?, None);
            } else {
                self.set_host_internal(Host::parse_opaque(host_substr)?, None);
            }
        } else if self.has_host() {
            if scheme_type.is_special() && !scheme_type.is_file() {
                return Err(ParseError::EmptyHost);
            } else if self.serialization.len() == self.path_start as usize {
                self.serialization.push('/');
            }
            debug_assert!(self.byte_at(self.scheme_end) == b':');
            debug_assert!(self.byte_at(self.path_start) == b'/');

            let new_path_start = if scheme_type.is_file() {
                self.scheme_end + 3
            } else {
                self.scheme_end + 1
            };

            self.serialization
                .drain(new_path_start as usize..self.path_start as usize);
            let offset = self.path_start - new_path_start;
            self.path_start = new_path_start;
            self.username_end = new_path_start;
            self.host_start = new_path_start;
            self.host_end = new_path_start;
            self.port = None;
            if let Some(ref mut index) = self.query_start {
                *index -= offset
            }
            if let Some(ref mut index) = self.fragment_start {
                *index -= offset
            }
        }
        Ok(())
    }

    /// opt_new_port: None means leave unchanged, Some(None) means remove any port number.
    fn set_host_internal(&mut self, host: Host<String>, opt_new_port: Option<Option<u16>>) {
        let old_suffix_pos = if opt_new_port.is_some() {
            self.path_start
        } else {
            self.host_end
        };
        let suffix = self.slice(old_suffix_pos..).to_owned();
        self.serialization.truncate(self.host_start as usize);
        if !self.has_authority() {
            debug_assert!(self.slice(self.scheme_end..self.host_start) == ":");
            debug_assert!(self.username_end == self.host_start);
            self.serialization.push('/');
            self.serialization.push('/');
            self.username_end += 2;
            self.host_start += 2;
        }
        write!(&mut self.serialization, "{}", host).unwrap();
        self.host_end = to_u32(self.serialization.len()).unwrap();
        self.host = host.into();

        if let Some(new_port) = opt_new_port {
            self.port = new_port;
            if let Some(port) = new_port {
                write!(&mut self.serialization, ":{}", port).unwrap();
            }
        }
        let new_suffix_pos = to_u32(self.serialization.len()).unwrap();
        self.serialization.push_str(&suffix);

        let adjust = |index: &mut u32| {
            *index -= old_suffix_pos;
            *index += new_suffix_pos;
        };
        adjust(&mut self.path_start);
        if let Some(ref mut index) = self.query_start {
            adjust(index)
        }
        if let Some(ref mut index) = self.fragment_start {
            adjust(index)
        }
    }

    /// Change this URL’s host to the given IP address.
    ///
    /// If this URL is cannot-be-a-base, do nothing and return `Err`.
    ///
    /// Compared to `Url::set_host`, this skips the host parser.
    ///
    /// # Examples
    ///
    /// ```rust
    /// use url::{Url, ParseError};
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("http://example.com")?;
    /// url.set_ip_host("127.0.0.1".parse().unwrap());
    /// assert_eq!(url.host_str(), Some("127.0.0.1"));
    /// assert_eq!(url.as_str(), "http://127.0.0.1/");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Cannot change URL's from mailto(cannot-be-base) to ip:
    ///
    /// ```rust

shell

sed -n '2005,2365p' url/src/lib.rs

output

Chunk ID: 2f4992
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 3270
Output:
    /// ```rust
    /// use url::{Url, ParseError};
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("mailto:rms@example.com")?;
    /// let result = url.set_ip_host("127.0.0.1".parse().unwrap());
    ///
    /// assert_eq!(url.as_str(), "mailto:rms@example.com");
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    #[allow(clippy::result_unit_err)]
    pub fn set_ip_host(&mut self, address: IpAddr) -> Result<(), ()> {
        if self.cannot_be_a_base() {
            return Err(());
        }

        let address = match address {
            IpAddr::V4(address) => Host::Ipv4(address),
            IpAddr::V6(address) => Host::Ipv6(address),
        };
        self.set_host_internal(address, None);
        Ok(())
    }

    /// Change this URL’s password.
    ///
    /// If this URL is cannot-be-a-base or does not have a host, do nothing and return `Err`.
    ///
    /// # Examples
    ///
    /// ```rust
    /// use url::{Url, ParseError};
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("mailto:rmz@example.com")?;
    /// let result = url.set_password(Some("secret_password"));
    /// assert!(result.is_err());
    ///
    /// let mut url = Url::parse("ftp://user1:secret1@example.com")?;
    /// let result = url.set_password(Some("secret_password"));
    /// assert_eq!(url.password(), Some("secret_password"));
    ///
    /// let mut url = Url::parse("ftp://user2:@example.com")?;
    /// let result = url.set_password(Some("secret2"));
    /// assert!(result.is_ok());
    /// assert_eq!(url.password(), Some("secret2"));
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    #[allow(clippy::result_unit_err)]
    pub fn set_password(&mut self, password: Option<&str>) -> Result<(), ()> {
        // has_host implies !cannot_be_a_base
        if !self.has_host() || self.host() == Some(Host::Domain("")) || self.scheme() == "file" {
            return Err(());
        }
        if let Some(password) = password {
            let host_and_after = self.slice(self.host_start..).to_owned();
            self.serialization.truncate(self.username_end as usize);
            self.serialization.push(':');
            self.serialization
                .extend(utf8_percent_encode(password, USERINFO));
            self.serialization.push('@');

            let old_host_start = self.host_start;
            let new_host_start = to_u32(self.serialization.len()).unwrap();
            let adjust = |index: &mut u32| {
                *index -= old_host_start;
                *index += new_host_start;
            };
            self.host_start = new_host_start;
            adjust(&mut self.host_end);
            adjust(&mut self.path_start);
            if let Some(ref mut index) = self.query_start {
                adjust(index)
            }
            if let Some(ref mut index) = self.fragment_start {
                adjust(index)
            }

            self.serialization.push_str(&host_and_after);
        } else if self.byte_at(self.username_end) == b':' {
            // If there is a password to remove
            let has_username_or_password = self.byte_at(self.host_start - 1) == b'@';
            debug_assert!(has_username_or_password);
            let username_start = self.scheme_end + 3;
            let empty_username = username_start == self.username_end;
            let start = self.username_end; // Remove the ':'
            let end = if empty_username {
                self.host_start // Remove the '@' as well
            } else {
                self.host_start - 1 // Keep the '@' to separate the username from the host
            };
            self.serialization.drain(start as usize..end as usize);
            let offset = end - start;
            self.host_start -= offset;
            self.host_end -= offset;
            self.path_start -= offset;
            if let Some(ref mut index) = self.query_start {
                *index -= offset
            }
            if let Some(ref mut index) = self.fragment_start {
                *index -= offset
            }
        }
        Ok(())
    }

    /// Change this URL’s username.
    ///
    /// If this URL is cannot-be-a-base or does not have a host, do nothing and return `Err`.
    /// # Examples
    ///
    /// Cannot setup username from mailto(cannot-be-base)
    ///
    /// ```rust
    /// use url::{Url, ParseError};
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("mailto:rmz@example.com")?;
    /// let result = url.set_username("user1");
    /// assert_eq!(url.as_str(), "mailto:rmz@example.com");
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Setup username to user1
    ///
    /// ```rust
    /// use url::{Url, ParseError};
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("ftp://:secre1@example.com/")?;
    /// let result = url.set_username("user1");
    /// assert!(result.is_ok());
    /// assert_eq!(url.username(), "user1");
    /// assert_eq!(url.as_str(), "ftp://user1:secre1@example.com/");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    #[allow(clippy::result_unit_err)]
    pub fn set_username(&mut self, username: &str) -> Result<(), ()> {
        // has_host implies !cannot_be_a_base
        if !self.has_host() || self.host() == Some(Host::Domain("")) || self.scheme() == "file" {
            return Err(());
        }
        let username_start = self.scheme_end + 3;
        debug_assert!(self.slice(self.scheme_end..username_start) == "://");
        if self.slice(username_start..self.username_end) == username {
            return Ok(());
        }
        let after_username = self.slice(self.username_end..).to_owned();
        self.serialization.truncate(username_start as usize);
        self.serialization
            .extend(utf8_percent_encode(username, USERINFO));

        let mut removed_bytes = self.username_end;
        self.username_end = to_u32(self.serialization.len()).unwrap();
        let mut added_bytes = self.username_end;

        let new_username_is_empty = self.username_end == username_start;
        match (new_username_is_empty, after_username.chars().next()) {
            (true, Some('@')) => {
                removed_bytes += 1;
                self.serialization.push_str(&after_username[1..]);
            }
            (false, Some('@')) | (_, Some(':')) | (true, _) => {
                self.serialization.push_str(&after_username);
            }
            (false, _) => {
                added_bytes += 1;
                self.serialization.push('@');
                self.serialization.push_str(&after_username);
            }
        }

        let adjust = |index: &mut u32| {
            *index -= removed_bytes;
            *index += added_bytes;
        };
        adjust(&mut self.host_start);
        adjust(&mut self.host_end);
        adjust(&mut self.path_start);
        if let Some(ref mut index) = self.query_start {
            adjust(index)
        }
        if let Some(ref mut index) = self.fragment_start {
            adjust(index)
        }
        Ok(())
    }

    /// Change this URL’s scheme.
    ///
    /// Do nothing and return `Err` under the following circumstances:
    ///
    /// * If the new scheme is not in `[a-zA-Z][a-zA-Z0-9+.-]+`
    /// * If this URL is cannot-be-a-base and the new scheme is one of
    ///   `http`, `https`, `ws`, `wss` or `ftp`
    /// * If either the old or new scheme is `http`, `https`, `ws`,
    ///   `wss` or `ftp` and the other is not one of these
    /// * If the new scheme is `file` and this URL includes credentials
    ///   or has a non-null port
    /// * If this URL's scheme is `file` and its host is empty or null
    ///
    /// See also [the URL specification's section on legal scheme state
    /// overrides](https://url.spec.whatwg.org/#scheme-state).
    ///
    /// # Examples
    ///
    /// Change the URL’s scheme from `https` to `http`:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("https://example.net")?;
    /// let result = url.set_scheme("http");
    /// assert_eq!(url.as_str(), "http://example.net/");
    /// assert!(result.is_ok());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    /// Change the URL’s scheme from `foo` to `bar`:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("foo://example.net")?;
    /// let result = url.set_scheme("bar");
    /// assert_eq!(url.as_str(), "bar://example.net");
    /// assert!(result.is_ok());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Cannot change URL’s scheme from `https` to `foõ`:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("https://example.net")?;
    /// let result = url.set_scheme("foõ");
    /// assert_eq!(url.as_str(), "https://example.net/");
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// Cannot change URL’s scheme from `mailto` (cannot-be-a-base) to `https`:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("mailto:rms@example.net")?;
    /// let result = url.set_scheme("https");
    /// assert_eq!(url.as_str(), "mailto:rms@example.net");
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    /// Cannot change the URL’s scheme from `foo` to `https`:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("foo://example.net")?;
    /// let result = url.set_scheme("https");
    /// assert_eq!(url.as_str(), "foo://example.net");
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    /// Cannot change the URL’s scheme from `http` to `foo`:
    ///
    /// ```
    /// use url::Url;
    /// # use url::ParseError;
    ///
    /// # fn run() -> Result<(), ParseError> {
    /// let mut url = Url::parse("http://example.net")?;
    /// let result = url.set_scheme("foo");
    /// assert_eq!(url.as_str(), "http://example.net/");
    /// assert!(result.is_err());
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    #[allow(clippy::result_unit_err, clippy::suspicious_operation_groupings)]
    pub fn set_scheme(&mut self, scheme: &str) -> Result<(), ()> {
        let mut parser = Parser::for_setter(String::new());
        let remaining = parser.parse_scheme(parser::Input::new(scheme))?;
        let new_scheme_type = SchemeType::from(&parser.serialization);
        let old_scheme_type = SchemeType::from(self.scheme());
        // If url’s scheme is a special scheme and buffer is not a special scheme, then return.
        if (new_scheme_type.is_special() && !old_scheme_type.is_special()) ||
            // If url’s scheme is not a special scheme and buffer is a special scheme, then return.
            (!new_scheme_type.is_special() && old_scheme_type.is_special()) ||
            // If url includes credentials or has a non-null port, and buffer is "file", then return.
            // If url’s scheme is "file" and its host is an empty host or null, then return.
            (new_scheme_type.is_file() && self.has_authority())
        {
            return Err(());
        }

        if !remaining.is_empty() || (!self.has_host() && new_scheme_type.is_special()) {
            return Err(());
        }
        let old_scheme_end = self.scheme_end;
        let new_scheme_end = to_u32(parser.serialization.len()).unwrap();
        let adjust = |index: &mut u32| {
            *index -= old_scheme_end;
            *index += new_scheme_end;
        };

        self.scheme_end = new_scheme_end;
        adjust(&mut self.username_end);
        adjust(&mut self.host_start);
        adjust(&mut self.host_end);
        adjust(&mut self.path_start);
        if let Some(ref mut index) = self.query_start {
            adjust(index)
        }
        if let Some(ref mut index) = self.fragment_start {
            adjust(index)
        }

        parser.serialization.push_str(self.slice(old_scheme_end..));
        self.serialization = parser.serialization;

        // Update the port so it can be removed
        // If it is the scheme's default
        // we don't mind it silently failing
        // if there was no port in the first place
        let previous_port = self.port();
        let _ = self.set_port(previous_port);

        Ok(())
    }

There are a couple of setter paths that can otherwise leave a stale marker behind, especially `set_path` and path segment mutation. I’ll add one private normalization helper on `Url` and use the same parser-side rule after path parsing so parse, join, and setters stay consistent.

shell

sed -n '190,360p' url/src/path_segments.rs

output

Chunk ID: 33842f
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 514
Output:
    /// let issue_number = "188";
    /// url.path_segments_mut().map_err(|_| "cannot be base")?
    ///     .extend(&[org, repo, "issues", issue_number]);
    /// assert_eq!(url.as_str(), "https://[code-host]/servo/rust-url/issues/188");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    ///
    /// In order to make sure that parsing the serialization of an URL gives the same URL,
    /// a segment is ignored if it is `"."` or `".."`:
    ///
    /// ```rust
    /// use url::Url;
    /// # use std::error::Error;
    ///
    /// # fn run() -> Result<(), Box<dyn Error>> {
    /// let mut url = Url::parse("https://[code-host]/servo")?;
    /// url.path_segments_mut().map_err(|_| "cannot be base")?
    ///     .extend(&["..", "rust-url", ".", "pulls"]);
    /// assert_eq!(url.as_str(), "https://[code-host]/servo/rust-url/pulls");
    /// # Ok(())
    /// # }
    /// # run().unwrap();
    /// ```
    pub fn extend<I>(&mut self, segments: I) -> &mut Self
    where
        I: IntoIterator,
        I::Item: AsRef<str>,
    {
        let scheme_type = SchemeType::from(self.url.scheme());
        let path_start = self.url.path_start as usize;
        self.url.mutate(|parser| {
            parser.context = parser::Context::PathSegmentSetter;
            for segment in segments {
                let segment = segment.as_ref();
                if matches!(segment, "." | "..") {
                    continue;
                }
                if parser.serialization.len() > path_start + 1
                    // Non special url's path might still be empty
                    || parser.serialization.len() == path_start
                {
                    parser.serialization.push('/');
                }
                let mut has_host = true; // FIXME account for this?
                parser.parse_path(
                    scheme_type,
                    &mut has_host,
                    path_start,
                    parser::Input::new(segment),
                );
            }
        });
        self
    }
}

shell

sed -n '120,170p' url/src/parser.rs

output

Chunk ID: 05700c
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 386
Output:
}

syntax_violation_enum! {
    Backslash => "backslash",
    C0SpaceIgnored =>
        "leading or trailing control or space character are ignored in URLs",
    EmbeddedCredentials =>
        "embedding authentication information (username or password) \
         in an URL is not recommended",
    ExpectedDoubleSlash => "expected //",
    ExpectedFileDoubleSlash => "expected // after file:",
    FileWithHostAndWindowsDrive => "file: with host and Windows drive letter",
    NonUrlCodePoint => "non-URL code point",
    NullInFragment => "NULL characters are ignored in URL fragment identifiers",
    PercentDecode => "expected 2 hex digits after %",
    TabOrNewlineIgnored => "tabs or newlines are ignored in URLs",
    UnencodedAtSign => "unencoded @ sign in username or password",
}

impl fmt::Display for SyntaxViolation {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        fmt::Display::fmt(self.description(), f)
    }
}

#[derive(Copy, Clone, PartialEq, Eq)]
pub enum SchemeType {
    File,
    SpecialNotFile,
    NotSpecial,
}

impl SchemeType {
    pub fn is_special(&self) -> bool {
        !matches!(*self, SchemeType::NotSpecial)
    }

    pub fn is_file(&self) -> bool {
        matches!(*self, SchemeType::File)
    }

    pub fn from(s: &str) -> Self {
        match s {
            "http" | "https" | "ws" | "wss" | "ftp" => SchemeType::SpecialNotFile,
            "file" => SchemeType::File,
            _ => SchemeType::NotSpecial,
        }
    }
}

pub fn default_port(scheme: &str) -> Option<u16> {

shell

rg -n "enum HostInternal|struct HostInternal|impl From<Host|HostInternal" url/src/lib.rs

output

Chunk ID: 0b3840
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 266
Output:
136:use crate::host::HostInternal;
187:    host: HostInternal,
653:                HostInternal::None => assert_eq!(host_str, ""),
654:                HostInternal::Ipv4(address) => assert_eq!(host_str, address.to_string()),
655:                HostInternal::Ipv6(address) => {
659:                HostInternal::Domain => {
684:            assert_eq!(self.host, HostInternal::None);
1010:        !matches!(self.host, HostInternal::None)
1087:            HostInternal::None => None,
1088:            HostInternal::Domain => Some(Host::Domain(self.slice(self.host_start..self.host_end))),
1089:            HostInternal::Ipv4(address) => Some(Host::Ipv4(address)),
1090:            HostInternal::Ipv6(address) => Some(Host::Ipv6(address)),
1119:            HostInternal::Domain => Some(self.slice(self.host_start..self.host_end)),
2755:) -> Result<(u32, HostInternal), ()> {
2778:    Ok((host_end, HostInternal::None))
2785:) -> Result<(u32, HostInternal), ()> {
2794:) -> Result<(u32, HostInternal), ()> {
2809:                host_internal = HostInternal::None;

shell

sed -n '1,90p' url/src/host.rs

output

Chunk ID: 701471
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 810
Output:
// Copyright 2013-2016 The rust-url developers.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use std::cmp;
use std::fmt::{self, Formatter};
use std::net::{Ipv4Addr, Ipv6Addr};

use percent_encoding::{percent_decode, utf8_percent_encode, CONTROLS};
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};

use crate::parser::{ParseError, ParseResult};

#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub(crate) enum HostInternal {
    None,
    Domain,
    Ipv4(Ipv4Addr),
    Ipv6(Ipv6Addr),
}

impl From<Host<String>> for HostInternal {
    fn from(host: Host<String>) -> HostInternal {
        match host {
            Host::Domain(ref s) if s.is_empty() => HostInternal::None,
            Host::Domain(_) => HostInternal::Domain,
            Host::Ipv4(address) => HostInternal::Ipv4(address),
            Host::Ipv6(address) => HostInternal::Ipv6(address),
        }
    }
}

/// The host name of an URL.
#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
#[derive(Clone, Debug, Eq, Ord, PartialOrd, Hash)]
pub enum Host<S = String> {
    /// A DNS domain name, as '.' dot-separated labels.
    /// Non-ASCII labels are encoded in punycode per IDNA if this is the host of
    /// a special URL, or percent encoded for non-special URLs. Hosts for
    /// non-special URLs are also called opaque hosts.
    Domain(S),

    /// An IPv4 address.
    /// `Url::host_str` returns the serialization of this address,
    /// as four decimal integers separated by `.` dots.
    Ipv4(Ipv4Addr),

    /// An IPv6 address.
    /// `Url::host_str` returns the serialization of that address between `[` and `]` brackets,
    /// in the format per [RFC 5952 *A Recommendation
    /// for IPv6 Address Text Representation*](https://tools.ietf.org/html/rfc5952):
    /// lowercase hexadecimal with maximal `::` compression.
    Ipv6(Ipv6Addr),
}

impl<'a> Host<&'a str> {
    /// Return a copy of `self` that owns an allocated `String` but does not borrow an `&Url`.
    pub fn to_owned(&self) -> Host<String> {
        match *self {
            Host::Domain(domain) => Host::Domain(domain.to_owned()),
            Host::Ipv4(address) => Host::Ipv4(address),
            Host::Ipv6(address) => Host::Ipv6(address),
        }
    }
}

impl Host<String> {
    /// Parse a host: either an IPv6 address in [] square brackets, or a domain.
    ///
    /// <https://url.spec.whatwg.org/#host-parsing>
    pub fn parse(input: &str) -> Result<Self, ParseError> {
        if input.starts_with('[') {
            if !input.ends_with(']') {
                return Err(ParseError::InvalidIpv6Address);
            }
            return parse_ipv6addr(&input[1..input.len() - 1]).map(Host::Ipv6);
        }
        let domain = percent_decode(input.as_bytes()).decode_utf8_lossy();

        let domain = Self::domain_to_ascii(&domain)?;

        if domain.is_empty() {
            return Err(ParseError::EmptyHost);
        }

I’m going to patch three places now: marker detection/normalization on `Url`, parser insertion after path normalization, and relative-join path copying so joins operate on the logical path and then reinsert the marker only if the resolved path still needs it.

apply_patch

*** Begin Patch
*** Update File: /app/url/src/lib.rs
@@
     pub fn check_invariants(&self) -> Result<(), String> {
@@
-        if self.slice(self.scheme_end + 1..).starts_with("//") {
+        if self.has_authority() {
@@
         } else {
             // Anarchist URL (no authority)
             assert_eq!(self.username_end, self.scheme_end + 1);
             assert_eq!(self.host_start, self.scheme_end + 1);
             assert_eq!(self.host_end, self.scheme_end + 1);
             assert_eq!(self.host, HostInternal::None);
             assert_eq!(self.port, None);
-            assert_eq!(self.path_start, self.scheme_end + 1);
+            if self.has_no_authority_path_marker() {
+                assert_eq!(self.path_start, self.scheme_end + 3);
+                assert_eq!(self.slice(self.scheme_end + 1..self.path_start), "/.");
+                assert!(self.path().starts_with("//"));
+            } else {
+                assert_eq!(self.path_start, self.scheme_end + 1);
+            }
         }
@@
         Ok(())
     }
+
+    pub(crate) fn has_no_authority_path_marker(&self) -> bool {
+        SchemeType::from(self.scheme()) == SchemeType::NotSpecial
+            && self.is_no_authority()
+            && self.path_start >= self.scheme_end + 3
+            && self.slice(self.path_start - 2..self.path_start) == "/."
+    }
+
+    pub(crate) fn path_start_before_marker(&self) -> u32 {
+        if self.has_no_authority_path_marker() {
+            self.path_start - 2
+        } else {
+            self.path_start
+        }
+    }
+
+    pub(crate) fn normalize_no_authority_path_marker(&mut self) {
+        if SchemeType::from(self.scheme()) != SchemeType::NotSpecial || !self.is_no_authority() {
+            return;
+        }
+
+        let has_marker = self.has_no_authority_path_marker();
+        let should_have_marker = self.path().starts_with("//");
+        match (has_marker, should_have_marker) {
+            (false, true) => {
+                let marker_start = self.path_start;
+                self.serialization.insert_str(marker_start as usize, "/.");
+                self.path_start += 2;
+                if let Some(ref mut index) = self.query_start {
+                    *index += 2
+                }
+                if let Some(ref mut index) = self.fragment_start {
+                    *index += 2
+                }
+            }
+            (true, false) => {
+                let marker_start = self.path_start - 2;
+                self.serialization
+                    .drain(marker_start as usize..self.path_start as usize);
+                self.path_start -= 2;
+                if let Some(ref mut index) = self.query_start {
+                    *index -= 2
+                }
+                if let Some(ref mut index) = self.fragment_start {
+                    *index -= 2
+                }
+            }
+            _ => {}
+        }
+    }
@@
     pub fn has_authority(&self) -> bool {
         debug_assert!(self.byte_at(self.scheme_end) == b':');
         self.slice(self.scheme_end..).starts_with("://")
     }
+
+    fn is_no_authority(&self) -> bool {
+        self.username_end == self.scheme_end + 1
+            && self.host_start == self.scheme_end + 1
+            && self.host_end == self.scheme_end + 1
+            && self.host == HostInternal::None
+            && self.port.is_none()
+    }
@@
         let cannot_be_a_base = self.cannot_be_a_base();
         let scheme_type = SchemeType::from(self.scheme());
-        self.serialization.truncate(self.path_start as usize);
+        self.serialization
+            .truncate(self.path_start_before_marker() as usize);
+        self.path_start = self.path_start_before_marker();
         self.mutate(|parser| {
             if cannot_be_a_base {
                 if path.starts_with('/') {
@@
                 parser.parse_path_start(scheme_type, &mut has_host, parser::Input::new(path));
             }
         });
+        self.normalize_no_authority_path_marker();
         self.restore_after_path(old_after_path_pos, &after_path);
     }
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/lib.rs

apply_patch

*** Begin Patch
*** Update File: /app/url/src/parser.rs
@@
-                let path_start = base_url.path_start;
-                self.serialization.push_str(base_url.slice(..path_start));
+                let path_start = base_url.path_start_before_marker();
+                self.serialization.push_str(base_url.slice(..path_start));
                 self.serialization.push('/');
                 let remaining = self.parse_path(
                     scheme_type,
                     &mut true,
@@
-                    base_url.path_start,
+                    path_start,
                     remaining,
                 )
             }
             _ => {
-                let before_query = match (base_url.query_start, base_url.fragment_start) {
-                    (None, None) => &*base_url.serialization,
-                    (Some(i), _) | (None, Some(i)) => base_url.slice(..i),
-                };
-                self.serialization.push_str(before_query);
+                let path_start = base_url.path_start_before_marker();
+                self.serialization.push_str(base_url.slice(..path_start));
+                self.serialization.push_str(base_url.path());
                 // FIXME spec says just "remove last entry", not the "pop" algorithm
-                self.pop_path(scheme_type, base_url.path_start as usize);
+                self.pop_path(scheme_type, path_start as usize);
                 // A special url always has a path.
                 // A path always starts with '/'
-                if self.serialization.len() == base_url.path_start as usize
+                if self.serialization.len() == path_start as usize
                     && (SchemeType::from(base_url.scheme()).is_special() || !input.is_empty())
                 {
                     self.serialization.push('/');
                 }
                 let remaining = match input.split_first() {
                     (Some('/'), remaining) => self.parse_path(
                         scheme_type,
                         &mut true,
-                        base_url.path_start as usize,
+                        path_start as usize,
                         remaining,
                     ),
                     _ => {
-                        self.parse_path(scheme_type, &mut true, base_url.path_start as usize, input)
+                        self.parse_path(scheme_type, &mut true, path_start as usize, input)
                     }
                 };
                 self.with_query_and_fragment(
                     scheme_type,
@@
-                    base_url.path_start,
+                    path_start,
                     remaining,
                 )
             }
         }
     }
@@
-        path_start: u32,
+        mut path_start: u32,
         remaining: Input<'_>,
     ) -> ParseResult<Url> {
+        if scheme_type == SchemeType::NotSpecial
+            && username_end == scheme_end + 1
+            && host_start == scheme_end + 1
+            && host_end == scheme_end + 1
+            && host == HostInternal::None
+            && port.is_none()
+            && self.serialization[path_start as usize..].starts_with("//")
+        {
+            self.serialization.insert_str(path_start as usize, "/.");
+            path_start += 2;
+        }
         let (query_start, fragment_start) =
             self.parse_query_and_fragment(scheme_type, scheme_end, remaining)?;
         Ok(Url {
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/parser.rs

shell

sed -n '300,330p' url/src/parser.rs && sed -n '130,150p' url/src/lib.rs

output

Chunk ID: b063bb
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 308
Output:
            }
        }
        true
    }
}

impl<F: FnMut(char) -> bool> Pattern for F {
    fn split_prefix(self, input: &mut Input) -> bool {
        input.next().map_or(false, self)
    }
}

impl<'i> Iterator for Input<'i> {
    type Item = char;
    fn next(&mut self) -> Option<char> {
        self.chars
            .by_ref()
            .find(|&c| !matches!(c, '\t' | '\n' | '\r'))
    }
}

pub struct Parser<'a> {
    pub serialization: String,
    pub base_url: Option<&'a Url>,
    pub query_encoding_override: EncodingOverride<'a>,
    pub violation_fn: Option<&'a dyn Fn(SyntaxViolation)>,
    pub context: Context,
}

#[derive(PartialEq, Eq, Copy, Clone)]
pub enum Context {

pub use form_urlencoded;

#[cfg(feature = "serde")]
extern crate serde;

use crate::host::HostInternal;
use crate::parser::{to_u32, Context, Parser, SchemeType, PATH_SEGMENT, USERINFO};
use percent_encoding::{percent_decode, percent_encode, utf8_percent_encode};
use std::borrow::Borrow;
use std::cmp;
use std::fmt::{self, Write};
use std::hash;
use std::io;
use std::mem;
use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
use std::ops::{Range, RangeFrom, RangeTo};
use std::path::{Path, PathBuf};
use std::str;

use std::convert::TryFrom;

The parse and join code is patched. I’ve reached the point where compilation will catch the offset API mistakes, so I’m adding focused tests for parse round-trips, slice positions, and joins before running the build.

shell

sed -n '1,35p' url/src/parser.rs

output

Chunk ID: 9bf641
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 287
Output:
// Copyright 2013-2016 The rust-url developers.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use std::error::Error;
use std::fmt::{self, Formatter, Write};
use std::str;

use crate::host::{Host, HostInternal};
use crate::Url;
use form_urlencoded::EncodingOverride;
use percent_encoding::{percent_encode, utf8_percent_encode, AsciiSet, CONTROLS};

/// https://url.spec.whatwg.org/#fragment-percent-encode-set
const FRAGMENT: &AsciiSet = &CONTROLS.add(b' ').add(b'"').add(b'<').add(b'>').add(b'`');

/// https://url.spec.whatwg.org/#path-percent-encode-set
const PATH: &AsciiSet = &FRAGMENT.add(b'#').add(b'?').add(b'{').add(b'}');

/// https://url.spec.whatwg.org/#userinfo-percent-encode-set
pub(crate) const USERINFO: &AsciiSet = &PATH
    .add(b'/')
    .add(b':')
    .add(b';')
    .add(b'=')
    .add(b'@')
    .add(b'[')
    .add(b'\\')
    .add(b']')
    .add(b'^')
    .add(b'|');

apply_patch

*** Begin Patch
*** Update File: /app/url/src/slicing.rs
@@
-            Position::AfterPort => self.path_start as usize,
+            Position::AfterPort => self.path_start_before_marker() as usize,
 
             Position::BeforePath => self.path_start as usize,
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/slicing.rs

apply_patch

*** Begin Patch
*** Update File: /app/url/src/path_segments.rs
@@
 impl<'a> Drop for PathSegmentsMut<'a> {
     fn drop(&mut self) {
+        self.url.normalize_no_authority_path_marker();
         self.url
             .restore_after_path(self.old_after_path_position, &self.after_path)
     }
 }
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/path_segments.rs

shell

sed -n '880,980p' url/tests/unit.rs && sed -n '960,1015p' url/tests/unit.rs

output

Chunk ID: 8b27c8
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1147
Output:

/// https://[code-host]/servo/rust-url/issues/505
#[cfg(windows)]
#[test]
fn test_url_from_file_path() {
    use std::path::PathBuf;
    use url::Url;

    let p = PathBuf::from("c:///");
    let u = Url::from_file_path(p).unwrap();
    let path = u.to_file_path().unwrap();
    assert_eq!("C:\\", path.to_str().unwrap());
}

/// https://[code-host]/servo/rust-url/issues/505
#[cfg(not(windows))]
#[test]
fn test_url_from_file_path() {
    use std::path::PathBuf;
    use url::Url;

    let p = PathBuf::from("/c:/");
    let u = Url::from_file_path(p).unwrap();
    let path = u.to_file_path().unwrap();
    assert_eq!("/c:/", path.to_str().unwrap());
}

#[test]
fn test_non_special_path() {
    let mut db_url = url::Url::parse("postgres://postgres@localhost/").unwrap();
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/");
    db_url.set_path("diesel_foo");
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/diesel_foo");
    assert_eq!(db_url.path(), "/diesel_foo");
}

#[test]
fn test_non_special_path2() {
    let mut db_url = url::Url::parse("postgres://postgres@localhost/").unwrap();
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/");
    db_url.set_path("");
    assert_eq!(db_url.path(), "");
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost");
    db_url.set_path("foo");
    assert_eq!(db_url.path(), "/foo");
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/foo");
    db_url.set_path("/bar");
    assert_eq!(db_url.path(), "/bar");
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/bar");
}

#[test]
fn test_non_special_path3() {
    let mut db_url = url::Url::parse("postgres://postgres@localhost/").unwrap();
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/");
    db_url.set_path("/");
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/");
    assert_eq!(db_url.path(), "/");
    db_url.set_path("/foo");
    assert_eq!(db_url.as_str(), "postgres://postgres@localhost/foo");
    assert_eq!(db_url.path(), "/foo");
}

#[test]
fn test_set_scheme_to_file_with_host() {
    let mut url: Url = "http://localhost:6767/foo/bar".parse().unwrap();
    let result = url.set_scheme("file");
    assert_eq!(url.to_string(), "http://localhost:6767/foo/bar");
    assert_eq!(result, Err(()));
}

#[test]
fn no_panic() {
    let mut url = Url::parse("arhttpsps:/.//eom/dae.com/\\\\t\\:").unwrap();
    url::quirks::set_hostname(&mut url, "//eom/datcom/\\\\t\\://eom/data.cs").unwrap();
}

#[test]
fn pop_if_empty_in_bounds() {
    let mut url = Url::parse("m://").unwrap();
    let mut segments = url.path_segments_mut().unwrap();
    segments.pop_if_empty();
    segments.pop();
}

#[test]
fn test_slicing() {
    use url::Position::*;

    #[derive(Default)]
    struct ExpectedSlices<'a> {
        full: &'a str,
        scheme: &'a str,
        username: &'a str,
        password: &'a str,
        host: &'a str,
        port: &'a str,
        path: &'a str,
        query: &'a str,
        fragment: &'a str,
    }
    let mut segments = url.path_segments_mut().unwrap();
    segments.pop_if_empty();
    segments.pop();
}

#[test]
fn test_slicing() {
    use url::Position::*;

    #[derive(Default)]
    struct ExpectedSlices<'a> {
        full: &'a str,
        scheme: &'a str,
        username: &'a str,
        password: &'a str,
        host: &'a str,
        port: &'a str,
        path: &'a str,
        query: &'a str,
        fragment: &'a str,
    }

    let data = [
        ExpectedSlices {
            full: "https://user:pass@domain.com:9742/path/file.ext?key=val&key2=val2#fragment",
            scheme: "https",
            username: "user",
            password: "pass",
            host: "domain.com",
            port: "9742",
            path: "/path/file.ext",
            query: "key=val&key2=val2",
            fragment: "fragment",
        },
        ExpectedSlices {
            full: "https://domain.com:9742/path/file.ext#fragment",
            scheme: "https",
            host: "domain.com",
            port: "9742",
            path: "/path/file.ext",
            fragment: "fragment",
            ..Default::default()
        },
        ExpectedSlices {
            full: "https://domain.com:9742/path/file.ext",
            scheme: "https",
            host: "domain.com",
            port: "9742",
            path: "/path/file.ext",
            ..Default::default()
        },
        ExpectedSlices {
            full: "blob:blob-info",
            scheme: "blob",
            path: "blob-info",
            ..Default::default()

shell

sed -n '1015,1110p' url/tests/unit.rs

output

Chunk ID: 81ab5e
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 710
Output:
            ..Default::default()
        },
    ];

    for expected_slices in &data {
        let url = Url::parse(expected_slices.full).unwrap();
        assert_eq!(&url[..], expected_slices.full);
        assert_eq!(&url[BeforeScheme..AfterScheme], expected_slices.scheme);
        assert_eq!(
            &url[BeforeUsername..AfterUsername],
            expected_slices.username
        );
        assert_eq!(
            &url[BeforePassword..AfterPassword],
            expected_slices.password
        );
        assert_eq!(&url[BeforeHost..AfterHost], expected_slices.host);
        assert_eq!(&url[BeforePort..AfterPort], expected_slices.port);
        assert_eq!(&url[BeforePath..AfterPath], expected_slices.path);
        assert_eq!(&url[BeforeQuery..AfterQuery], expected_slices.query);
        assert_eq!(
            &url[BeforeFragment..AfterFragment],
            expected_slices.fragment
        );
        assert_eq!(&url[..AfterFragment], expected_slices.full);
    }
}

#[test]
fn test_make_relative() {
    let tests = [
        (
            "http://127.0.0.1:8080/test",
            "http://127.0.0.1:8080/test",
            "",
        ),
        (
            "http://127.0.0.1:8080/test",
            "http://127.0.0.1:8080/test/",
            "test/",
        ),
        (
            "http://127.0.0.1:8080/test/",
            "http://127.0.0.1:8080/test",
            "../test",
        ),
        (
            "http://127.0.0.1:8080/",
            "http://127.0.0.1:8080/?foo=bar#123",
            "?foo=bar#123",
        ),
        (
            "http://127.0.0.1:8080/",
            "http://127.0.0.1:8080/test/video",
            "test/video",
        ),
        (
            "http://127.0.0.1:8080/test",
            "http://127.0.0.1:8080/test/video",
            "test/video",
        ),
        (
            "http://127.0.0.1:8080/test/",
            "http://127.0.0.1:8080/test/video",
            "video",
        ),
        (
            "http://127.0.0.1:8080/test",
            "http://127.0.0.1:8080/test2/video",
            "test2/video",
        ),
        (
            "http://127.0.0.1:8080/test/",
            "http://127.0.0.1:8080/test2/video",
            "../test2/video",
        ),
        (
            "http://127.0.0.1:8080/test/bla",
            "http://127.0.0.1:8080/test2/video",
            "../test2/video",
        ),
        (
            "http://127.0.0.1:8080/test/bla/",
            "http://127.0.0.1:8080/test2/video",
            "../../test2/video",
        ),
        (
            "http://127.0.0.1:8080/test/?foo=bar#123",
            "http://127.0.0.1:8080/test/video",
            "video",
        ),
        (
            "http://127.0.0.1:8080/test/",
            "http://127.0.0.1:8080/test/video?baz=meh#456",
            "video?baz=meh#456",
        ),

shell

sed -n '1,40p' url/tests/unit.rs

output

Chunk ID: eddd30
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 297
Output:
// Copyright 2013-2014 The rust-url developers.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Unit tests

use std::borrow::Cow;
use std::cell::{Cell, RefCell};
use std::net::{Ipv4Addr, Ipv6Addr};
use std::path::{Path, PathBuf};
use url::{form_urlencoded, Host, Origin, Url};

#[test]
fn size() {
    use std::mem::size_of;
    assert_eq!(size_of::<Url>(), size_of::<Option<Url>>());
}

#[test]
fn test_relative() {
    let base: Url = "sc://%C3%B1".parse().unwrap();
    let url = base.join("/resources/testharness.js").unwrap();
    assert_eq!(url.as_str(), "sc://%C3%B1/resources/testharness.js");
}

#[test]
fn test_relative_empty() {
    let base: Url = "sc://%C3%B1".parse().unwrap();
    let url = base.join("").unwrap();
    assert_eq!(url.as_str(), "sc://%C3%B1");
}

#[test]
fn test_strip_trailing_spaces_from_opaque_path() {
    let mut url: Url = "data:space   ?query".parse().unwrap();
    url.set_query(None);

apply_patch

*** Begin Patch
*** Update File: /app/url/tests/unit.rs
@@
 fn test_non_special_path3() {
     let mut db_url = url::Url::parse("postgres://postgres@localhost/").unwrap();
     assert_eq!(db_url.as_str(), "postgres://postgres@localhost/");
     db_url.set_path("/");
@@
     assert_eq!(db_url.as_str(), "postgres://postgres@localhost/foo");
     assert_eq!(db_url.path(), "/foo");
 }
 
+#[test]
+fn test_non_special_no_authority_double_slash_path_marker() {
+    use url::Position::*;
+
+    let url = Url::parse("foo:/.//path?query#fragment").unwrap();
+    assert_eq!(url.as_str(), "foo:/.//path?query#fragment");
+    assert_eq!(url.host_str(), None);
+    assert_eq!(url.path(), "//path");
+    assert_eq!(&url[AfterPort..BeforePath], "/.");
+    assert_eq!(&url[BeforePath..AfterPath], "//path");
+
+    let reparsed = Url::parse(url.as_str()).unwrap();
+    assert_eq!(reparsed.as_str(), url.as_str());
+    assert_eq!(reparsed.host_str(), None);
+    assert_eq!(reparsed.path(), "//path");
+
+    let url = Url::parse("foo:/path").unwrap();
+    assert_eq!(url.path(), "/path");
+    assert_eq!(&url[AfterPort..BeforePath], "");
+}
+
+#[test]
+fn test_non_special_no_authority_double_slash_path_marker_join() {
+    let base = Url::parse("foo:/.//a/b?old#frag").unwrap();
+
+    let query = base.join("?q").unwrap();
+    assert_eq!(query.as_str(), "foo:/.//a/b?q");
+    assert_eq!(query.path(), "//a/b");
+
+    let fragment = base.join("#new").unwrap();
+    assert_eq!(fragment.as_str(), "foo:/.//a/b?old#new");
+    assert_eq!(fragment.path(), "//a/b");
+
+    let child = base.join("c").unwrap();
+    assert_eq!(child.as_str(), "foo:/.//a/c");
+    assert_eq!(child.path(), "//a/c");
+
+    let absolute_path = base.join("/c").unwrap();
+    assert_eq!(absolute_path.as_str(), "foo:/c");
+    assert_eq!(absolute_path.path(), "/c");
+
+    let authority = base.join("//host/path").unwrap();
+    assert_eq!(authority.as_str(), "foo://host/path");
+    assert_eq!(authority.host_str(), Some("host"));
+    assert_eq!(authority.path(), "/path");
+}
+
 #[test]
 fn test_set_scheme_to_file_with_host() {
     let mut url: Url = "http://localhost:6767/foo/bar".parse().unwrap();
     let result = url.set_scheme("file");
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/tests/unit.rs

The focused tests are in place. I’m running the URL unit tests first because they compile the touched crate and exercise the new path shape more directly than a workspace build.

shell

cargo test -p url --test unit non_special_no_authority_double_slash_path_marker --locked

output

Chunk ID: 1e7448
Wall time: 2.1116 seconds
Process exited with code 0
Original token count: 621
Output:
   Compiling proc-macro2 v1.0.106
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
   Compiling quote v1.0.45
   Compiling syn v1.0.109
   Compiling debugger_test v0.1.5
    Finished `test` profile [unoptimized + debuginfo] target(s) in 2.22s
     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 2 tests
test test_non_special_no_authority_double_slash_path_marker ... ok
test test_non_special_no_authority_double_slash_path_marker_join ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 58 filtered out; finished in 0.00s

The focused parse and join tests pass. I’m adding the parent-directory join case now because that’s the easy place for a stale marker to survive after the logical path resolves from `//...` back to `/...`.

apply_patch

*** Begin Patch
*** Update File: /app/url/tests/unit.rs
@@
     let child = base.join("c").unwrap();
     assert_eq!(child.as_str(), "foo:/.//a/c");
     assert_eq!(child.path(), "//a/c");
 
+    let parent = base.join("../c").unwrap();
+    assert_eq!(parent.as_str(), "foo:/.//c");
+    assert_eq!(parent.path(), "//c");
+
+    let root_parent = base.join("../../c").unwrap();
+    assert_eq!(root_parent.as_str(), "foo:/c");
+    assert_eq!(root_parent.path(), "/c");
+
     let absolute_path = base.join("/c").unwrap();
     assert_eq!(absolute_path.as_str(), "foo:/c");
     assert_eq!(absolute_path.path(), "/c");
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/tests/unit.rs

shell

cargo test -p url --test unit non_special_no_authority_double_slash_path_marker --locked

output

Chunk ID: 670bb6
Wall time: 0.1118 seconds
Process exited with code 0
Original token count: 591
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 2 tests
test test_non_special_no_authority_double_slash_path_marker ... ok
test test_non_special_no_authority_double_slash_path_marker_join ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 58 filtered out; finished in 0.00s

The expanded marker tests pass, including the `../../c` case that drops back to a single leading slash. I’m running the full `url` unit test target next, then the requested locked workspace build.

shell

cargo test -p url --test unit --locked

output

Chunk ID: 0520b7
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1043
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 60 tests
test append_trailing_slash ... ok
test append_empty_segment_then_mutate ... ok
test form_urlencoded_encoding_override ... ok
test extend_query_pairs_then_mutate ... ok
test from_str ... ok
test host_serialization ... ok
test host ... ok
test issue_124 ... ok
test issue_197 ... ok
test issue_241 ... ok
test issue_61 ... ok
test new_directory_paths ... ok
test new_file_paths ... ok
test new_path_bad_utf8 ... ok
test new_path_windows_fun ... ok
test no_panic ... ok
test parse_with_params ... ok
test path_backslash_fun ... ok
test size ... ok
test pop_if_empty_in_bounds ... ok
test test_domain ... ok
test test_authority ... ok
test test_equality ... ok
test test_form_serialize ... ok
test test_domain_encoding_quirks ... ok
test test_form_urlencoded ... ok
test test_fragment ... ok
test test_has_authority ... ok
test test_idna ... ok
test test_leading_dots ... ok
test test_no_base_url ... ok
test test_non_special_no_authority_double_slash_path_marker ... ok
test test_non_special_no_authority_double_slash_path_marker_join ... ok
test test_make_relative ... ok
test test_non_special_path ... ok
test test_non_special_path2 ... ok
test test_non_special_path3 ... ok
test test_options_reuse ... ok
test test_origin_blob_equality ... ok
test test_origin_opaque ... ok
test test_origin_hash ... ok
test test_query ... ok
test test_origin_unicode_serialization ... ok
test test_relative ... ok
test test_relative_empty ... ok
test test_serialization ... ok
test test_set_empty_host ... ok
test test_set_empty_hostname ... ok
test test_set_host ... ok
test test_set_href ... ok
test test_set_ip_host ... ok
test test_set_scheme_to_file_with_host ... ok
test test_slicing ... ok
test test_strip_trailing_spaces_from_opaque_path ... ok
test test_syntax_violation_callback ... ok
test test_syntax_violation_callback_lifetimes ... ok
test test_syntax_violation_callback_types ... ok
test test_url_from_file_path ... ok
test test_socket_addrs ... ok
test test_windows_unc_path ... ok

test result: ok. 60 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

The full `url` unit test target is clean. I’m running `cargo build --locked` for the workspace now, as requested.

shell

cargo build --locked

output

Chunk ID: ad4d16
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 755
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
warning: field `0` is never read
 --> data-url/src/forgiving_base64.rs:4:26
  |
4 | pub struct InvalidBase64(InvalidBase64Details);
  |            ------------- ^^^^^^^^^^^^^^^^^^^^
  |            |
  |            field in this struct
  |
  = help: consider removing this field
  = note: `InvalidBase64` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
  = note: `#[warn(dead_code)]` on by default

warning: field `0` is never read
 --> data-url/src/forgiving_base64.rs:8:22
  |
8 |     UnexpectedSymbol(u8),
  |     ---------------- ^^
  |     |
  |     field in this variant
  |
  = note: `InvalidBase64Details` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
  |
8 |     UnexpectedSymbol(()),
  |                      ~~

warning: `data-url` (lib) generated 2 warnings
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.00s

The requested locked build passes, with only existing warnings in other crates. I’m doing one broader `url` crate test run as a final sanity check because the invariant tests exercise serialization/reparse behavior across fixture data.

shell

cargo test -p url --locked

output

Chunk ID: 1fc7c8
Wall time: 3.5915 seconds
Process exited with code 0
Original token count: 2149
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
     Running unittests src/lib.rs (target/debug/deps/url-2559718008fa8f63)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running tests/data.rs (target/debug/deps/data-2c0f19163cfb41ae)

running 2 tests
test setters_tests ... ok
test urltestdata ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s

     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 60 tests
test append_trailing_slash ... ok
test append_empty_segment_then_mutate ... ok
test extend_query_pairs_then_mutate ... ok
test form_urlencoded_encoding_override ... ok
test from_str ... ok
test host ... ok
test issue_124 ... ok
test host_serialization ... ok
test issue_197 ... ok
test issue_241 ... ok
test issue_61 ... ok
test new_directory_paths ... ok
test new_file_paths ... ok
test new_path_windows_fun ... ok
test new_path_bad_utf8 ... ok
test no_panic ... ok
test parse_with_params ... ok
test path_backslash_fun ... ok
test pop_if_empty_in_bounds ... ok
test size ... ok
test test_domain ... ok
test test_authority ... ok
test test_domain_encoding_quirks ... ok
test test_equality ... ok
test test_form_serialize ... ok
test test_form_urlencoded ... ok
test test_has_authority ... ok
test test_fragment ... ok
test test_leading_dots ... ok
test test_idna ... ok
test test_no_base_url ... ok
test test_non_special_no_authority_double_slash_path_marker ... ok
test test_non_special_no_authority_double_slash_path_marker_join ... ok
test test_non_special_path ... ok
test test_non_special_path2 ... ok
test test_make_relative ... ok
test test_non_special_path3 ... ok
test test_options_reuse ... ok
test test_origin_blob_equality ... ok
test test_origin_opaque ... ok
test test_origin_hash ... ok
test test_query ... ok
test test_origin_unicode_serialization ... ok
test test_relative ... ok
test test_relative_empty ... ok
test test_set_empty_host ... ok
test test_set_empty_hostname ... ok
test test_serialization ... ok
test test_set_host ... ok
test test_set_href ... ok
test test_set_ip_host ... ok
test test_set_scheme_to_file_with_host ... ok
test test_slicing ... ok
test test_strip_trailing_spaces_from_opaque_path ... ok
test test_syntax_violation_callback ... ok
test test_syntax_violation_callback_lifetimes ... ok
test test_syntax_violation_callback_types ... ok
test test_url_from_file_path ... ok
test test_socket_addrs ... ok
test test_windows_unc_path ... ok

test result: ok. 60 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests url

running 66 tests
test url/src/lib.rs - (line 18) ... ok
test url/src/lib.rs - (line 26) ... ok
test url/src/lib.rs - (line 89) ... ok
test url/src/lib.rs - (line 57) ... ok
test url/src/lib.rs - (line 97) ... ok
test url/src/lib.rs - ParseOptions<'a>::syntax_violation_callback (line 222) ... ok
test url/src/lib.rs - Url::as_str (line 555) ... ok
test url/src/lib.rs - Url::authority (line 925) ... ok
test url/src/lib.rs - Url::cannot_be_a_base (line 961) ... ok
test url/src/lib.rs - Url::domain (line 1164) ... ok
test url/src/lib.rs - Url::from_file_path (line 2442) ... ok
test url/src/lib.rs - Url::fragment (line 1462) ... ok
test url/src/lib.rs - Url::has_authority (line 881) ... ok
test url/src/lib.rs - Url::has_host (line 1056) ... ok
test url/src/lib.rs - Url::host (line 1129) ... ok
test url/src/lib.rs - Url::host_str (line 1090) ... ok
test url/src/lib.rs - Url::join (line 361) ... ok
test url/src/lib.rs - Url::into_string (line 578) ... ok
test url/src/lib.rs - Url::options (line 528) ... ok
test url/src/lib.rs - Url::make_relative (line 396) ... ok
test url/src/lib.rs - Url::origin (line 784) ... ok
test url/src/lib.rs - Url::origin (line 801) ... ok
test url/src/lib.rs - Url::origin (line 835) ... ok
test url/src/lib.rs - Url::origin (line 818) ... ok
test url/src/lib.rs - Url::parse (line 261) ... ok
test url/src/lib.rs - Url::parse_with_params (line 289) ... ok
test url/src/lib.rs - Url::password (line 1018) ... ok
test url/src/lib.rs - Url::path (line 1311) ... ok
test url/src/lib.rs - Url::port (line 1195) ... ok
test url/src/lib.rs - Url::path_segments (line 1347) ... ok
test url/src/lib.rs - Url::port_or_known_default (line 1227) ... ok
test url/src/lib.rs - Url::query (line 1383) ... ok
test url/src/lib.rs - Url::query_pairs_mut (line 1604) ... ok
test url/src/lib.rs - Url::query_pairs (line 1422) ... ok
test url/src/lib.rs - Url::set_fragment (line 1496) ... ok
test url/src/lib.rs - Url::scheme (line 855) ... ok
test url/src/lib.rs - Url::set_host (line 1869) ... ok
test url/src/lib.rs - Url::set_host (line 1885) ... ok
test url/src/lib.rs - Url::set_host (line 1901) ... ok
test url/src/lib.rs - Url::set_host (line 1917) ... ok
test url/src/lib.rs - Url::set_ip_host (line 2057) ... ok
test url/src/lib.rs - Url::set_ip_host (line 2072) ... ok
test url/src/lib.rs - Url::set_path (line 1666) ... ok
test url/src/lib.rs - Url::set_password (line 2106) ... ok
test url/src/lib.rs - Url::set_port (line 1776) ... ok
test url/src/lib.rs - Url::set_port (line 1757) ... ok
test url/src/lib.rs - Url::set_port (line 1792) ... ok
test url/src/lib.rs - Url::set_query (line 1554) ... ok
test url/src/lib.rs - Url::set_scheme (line 2306) ... ok
test url/src/lib.rs - Url::set_scheme (line 2291) ... ok
test url/src/lib.rs - Url::set_scheme (line 2338) ... ok
test url/src/lib.rs - Url::set_scheme (line 2322) ... ok
test url/src/lib.rs - Url::set_scheme (line 2368) ... ok
test url/src/lib.rs - Url::set_scheme (line 2353) ... ok
test url/src/lib.rs - Url::set_username (line 2191) ... ok
test url/src/lib.rs - Url::set_username (line 2206) ... ok
test url/src/lib.rs - Url::socket_addrs (line 1260) - compile ... ok
test url/src/lib.rs - Url::socket_addrs (line 1267) ... ok
test url/src/lib.rs - Url::to_file_path (line 2602) ... ok
test url/src/lib.rs - Url::username (line 988) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut (line 20) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::clear (line 80) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::extend (line 183) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::extend (line 203) ... ok
test url/src/slicing.rs - slicing::Position (line 44) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::pop_if_empty (line 108) ... ok

test result: ok. 66 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.35s

The broader `url` crate tests also pass, including fixture/invariant tests and doctests. I’m doing a quick final read of the edited sections so the summary can point at the exact files and make sure no accidental broad changes slipped in.

shell

nl -ba url/src/lib.rs | sed -n '630,735p'

output

Chunk ID: 66503f
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1380
Output:
   630	        assert!(self.byte_at(0).is_ascii_alphabetic());
   631	        assert!(self
   632	            .slice(1..self.scheme_end)
   633	            .chars()
   634	            .all(|c| matches!(c, 'a'..='z' | 'A'..='Z' | '0'..='9' | '+' | '-' | '.')));
   635	        assert_eq!(self.byte_at(self.scheme_end), b':');
   636	
   637	        if self.has_authority() {
   638	            // URL with authority
   639	            if self.username_end != self.serialization.len() as u32 {
   640	                match self.byte_at(self.username_end) {
   641	                    b':' => {
   642	                        assert!(self.host_start >= self.username_end + 2);
   643	                        assert_eq!(self.byte_at(self.host_start - 1), b'@');
   644	                    }
   645	                    b'@' => assert!(self.host_start == self.username_end + 1),
   646	                    _ => assert_eq!(self.username_end, self.scheme_end + 3),
   647	                }
   648	            }
   649	            assert!(self.host_start >= self.username_end);
   650	            assert!(self.host_end >= self.host_start);
   651	            let host_str = self.slice(self.host_start..self.host_end);
   652	            match self.host {
   653	                HostInternal::None => assert_eq!(host_str, ""),
   654	                HostInternal::Ipv4(address) => assert_eq!(host_str, address.to_string()),
   655	                HostInternal::Ipv6(address) => {
   656	                    let h: Host<String> = Host::Ipv6(address);
   657	                    assert_eq!(host_str, h.to_string())
   658	                }
   659	                HostInternal::Domain => {
   660	                    if SchemeType::from(self.scheme()).is_special() {
   661	                        assert!(!host_str.is_empty())
   662	                    }
   663	                }
   664	            }
   665	            if self.path_start == self.host_end {
   666	                assert_eq!(self.port, None);
   667	            } else {
   668	                assert_eq!(self.byte_at(self.host_end), b':');
   669	                let port_str = self.slice(self.host_end + 1..self.path_start);
   670	                assert_eq!(
   671	                    self.port,
   672	                    Some(port_str.parse::<u16>().expect("Couldn't parse port?"))
   673	                );
   674	            }
   675	            assert!(
   676	                self.path_start as usize == self.serialization.len()
   677	                    || matches!(self.byte_at(self.path_start), b'/' | b'#' | b'?')
   678	            );
   679	        } else {
   680	            // Anarchist URL (no authority)
   681	            assert_eq!(self.username_end, self.scheme_end + 1);
   682	            assert_eq!(self.host_start, self.scheme_end + 1);
   683	            assert_eq!(self.host_end, self.scheme_end + 1);
   684	            assert_eq!(self.host, HostInternal::None);
   685	            assert_eq!(self.port, None);
   686	            if self.has_no_authority_path_marker() {
   687	                assert_eq!(self.path_start, self.scheme_end + 3);
   688	                assert_eq!(self.slice(self.scheme_end + 1..self.path_start), "/.");
   689	                assert!(self.path().starts_with("//"));
   690	            } else {
   691	                assert_eq!(self.path_start, self.scheme_end + 1);
   692	            }
   693	        }
   694	        if let Some(start) = self.query_start {
   695	            assert!(start >= self.path_start);
   696	            assert_eq!(self.byte_at(start), b'?');
   697	        }
   698	        if let Some(start) = self.fragment_start {
   699	            assert!(start >= self.path_start);
   700	            assert_eq!(self.byte_at(start), b'#');
   701	        }
   702	        if let (Some(query_start), Some(fragment_start)) = (self.query_start, self.fragment_start) {
   703	            assert!(fragment_start > query_start);
   704	        }
   705	
   706	        let other = Url::parse(self.as_str()).expect("Failed to parse myself?");
   707	        assert_eq!(&self.serialization, &other.serialization);
   708	        assert_eq!(self.scheme_end, other.scheme_end);
   709	        assert_eq!(self.username_end, other.username_end);
   710	        assert_eq!(self.host_start, other.host_start);
   711	        assert_eq!(self.host_end, other.host_end);
   712	        assert!(
   713	            self.host == other.host ||
   714	                // XXX No host round-trips to empty host.
   715	                // See https://[code-host]/whatwg/url/issues/79
   716	                (self.host_str(), other.host_str()) == (None, Some(""))
   717	        );
   718	        assert_eq!(self.port, other.port);
   719	        assert_eq!(self.path_start, other.path_start);
   720	        assert_eq!(self.query_start, other.query_start);
   721	        assert_eq!(self.fragment_start, other.fragment_start);
   722	        Ok(())
   723	    }
   724	
   725	    pub(crate) fn has_no_authority_path_marker(&self) -> bool {
   726	        SchemeType::from(self.scheme()) == SchemeType::NotSpecial
   727	            && self.is_no_authority()
   728	            && self.path_start >= self.scheme_end + 3
   729	            && self.slice(self.path_start - 2..self.path_start) == "/."
   730	    }
   731	
   732	    pub(crate) fn path_start_before_marker(&self) -> u32 {
   733	        if self.has_no_authority_path_marker() {
   734	            self.path_start - 2
   735	        } else {

shell

nl -ba url/src/lib.rs | sed -n '880,910p'

output

Chunk ID: ac6848
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 294
Output:
   880	    ///
   881	    /// ```
   882	    /// use url::Url;
   883	    /// # use url::ParseError;
   884	    ///
   885	    /// # fn run() -> Result<(), ParseError> {
   886	    /// let url = Url::parse("ftp://rms@example.com")?;
   887	    /// assert!(url.has_authority());
   888	    ///
   889	    /// let url = Url::parse("unix:/run/foo.socket")?;
   890	    /// assert!(!url.has_authority());
   891	    ///
   892	    /// let url = Url::parse("data:text/plain,Stuff")?;
   893	    /// assert!(!url.has_authority());
   894	    /// # Ok(())
   895	    /// # }
   896	    /// # run().unwrap();
   897	    /// ```
   898	    #[inline]
   899	    pub fn has_authority(&self) -> bool {
   900	        debug_assert!(self.byte_at(self.scheme_end) == b':');
   901	        self.slice(self.scheme_end..).starts_with("://")
   902	    }
   903	
   904	    fn is_no_authority(&self) -> bool {
   905	        self.username_end == self.scheme_end + 1
   906	            && self.host_start == self.scheme_end + 1
   907	            && self.host_end == self.scheme_end + 1
   908	            && self.host == HostInternal::None
   909	            && self.port.is_none()
   910	    }

shell

nl -ba url/src/lib.rs | sed -n '1630,1660p'

output

Chunk ID: 20e049
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 339
Output:
  1630	    /// The state of `Url` is unspecified if this return value is leaked without being dropped.
  1631	    pub fn query_pairs_mut(&mut self) -> form_urlencoded::Serializer<'_, UrlQuery<'_>> {
  1632	        let fragment = self.take_fragment();
  1633	
  1634	        let query_start;
  1635	        if let Some(start) = self.query_start {
  1636	            debug_assert!(self.byte_at(start) == b'?');
  1637	            query_start = start as usize;
  1638	        } else {
  1639	            query_start = self.serialization.len();
  1640	            self.query_start = Some(to_u32(query_start).unwrap());
  1641	            self.serialization.push('?');
  1642	        }
  1643	
  1644	        let query = UrlQuery {
  1645	            url: Some(self),
  1646	            fragment,
  1647	        };
  1648	        form_urlencoded::Serializer::for_suffix(query, query_start + "?".len())
  1649	    }
  1650	
  1651	    fn take_after_path(&mut self) -> String {
  1652	        match (self.query_start, self.fragment_start) {
  1653	            (Some(i), _) | (None, Some(i)) => {
  1654	                let after_path = self.slice(i..).to_owned();
  1655	                self.serialization.truncate(i as usize);
  1656	                after_path
  1657	            }
  1658	            (None, None) => String::new(),
  1659	        }
  1660	    }

shell

nl -ba url/src/parser.rs | sed -n '760,830p'

output

Chunk ID: f39469
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 855
Output:
   760	                        .push_str(base_url.slice(..scheme_end + 1));
   761	                    if let Some(after_prefix) = input.split_prefix("//") {
   762	                        return self.after_double_slash(after_prefix, scheme_type, scheme_end);
   763	                    }
   764	                    return self.after_double_slash(remaining, scheme_type, scheme_end);
   765	                }
   766	                let path_start = base_url.path_start_before_marker();
   767	                self.serialization.push_str(base_url.slice(..path_start));
   768	                self.serialization.push('/');
   769	                let remaining = self.parse_path(
   770	                    scheme_type,
   771	                    &mut true,
   772	                    path_start as usize,
   773	                    input_after_first_char,
   774	                );
   775	                self.with_query_and_fragment(
   776	                    scheme_type,
   777	                    base_url.scheme_end,
   778	                    base_url.username_end,
   779	                    base_url.host_start,
   780	                    base_url.host_end,
   781	                    base_url.host,
   782	                    base_url.port,
   783	                    path_start,
   784	                    remaining,
   785	                )
   786	            }
   787	            _ => {
   788	                let path_start = base_url.path_start_before_marker();
   789	                self.serialization.push_str(base_url.slice(..path_start));
   790	                self.serialization.push_str(base_url.path());
   791	                // FIXME spec says just "remove last entry", not the "pop" algorithm
   792	                self.pop_path(scheme_type, path_start as usize);
   793	                // A special url always has a path.
   794	                // A path always starts with '/'
   795	                if self.serialization.len() == path_start as usize
   796	                    && (SchemeType::from(base_url.scheme()).is_special() || !input.is_empty())
   797	                {
   798	                    self.serialization.push('/');
   799	                }
   800	                let remaining = match input.split_first() {
   801	                    (Some('/'), remaining) => self.parse_path(
   802	                        scheme_type,
   803	                        &mut true,
   804	                        path_start as usize,
   805	                        remaining,
   806	                    ),
   807	                    _ => {
   808	                        self.parse_path(scheme_type, &mut true, path_start as usize, input)
   809	                    }
   810	                };
   811	                self.with_query_and_fragment(
   812	                    scheme_type,
   813	                    base_url.scheme_end,
   814	                    base_url.username_end,
   815	                    base_url.host_start,
   816	                    base_url.host_end,
   817	                    base_url.host,
   818	                    base_url.port,
   819	                    path_start,
   820	                    remaining,
   821	                )
   822	            }
   823	        }
   824	    }
   825	
   826	    fn after_double_slash(
   827	        mut self,
   828	        input: Input<'_>,
   829	        scheme_type: SchemeType,
   830	        scheme_end: u32,

shell

nl -ba url/src/parser.rs | sed -n '1348,1390p'

output

Chunk ID: 57049c
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 406
Output:
  1348	        scheme_type: SchemeType,
  1349	        scheme_end: u32,
  1350	        username_end: u32,
  1351	        host_start: u32,
  1352	        host_end: u32,
  1353	        host: HostInternal,
  1354	        port: Option<u16>,
  1355	        mut path_start: u32,
  1356	        remaining: Input<'_>,
  1357	    ) -> ParseResult<Url> {
  1358	        if scheme_type == SchemeType::NotSpecial
  1359	            && username_end == scheme_end + 1
  1360	            && host_start == scheme_end + 1
  1361	            && host_end == scheme_end + 1
  1362	            && host == HostInternal::None
  1363	            && port.is_none()
  1364	            && self.serialization[path_start as usize..].starts_with("//")
  1365	        {
  1366	            self.serialization.insert_str(path_start as usize, "/.");
  1367	            path_start += 2;
  1368	        }
  1369	        let (query_start, fragment_start) =
  1370	            self.parse_query_and_fragment(scheme_type, scheme_end, remaining)?;
  1371	        Ok(Url {
  1372	            serialization: self.serialization,
  1373	            scheme_end,
  1374	            username_end,
  1375	            host_start,
  1376	            host_end,
  1377	            host,
  1378	            port,
  1379	            path_start,
  1380	            query_start,
  1381	            fragment_start,
  1382	        })
  1383	    }
  1384	
  1385	    /// Return (query_start, fragment_start)
  1386	    fn parse_query_and_fragment(
  1387	        &mut self,
  1388	        scheme_type: SchemeType,
  1389	        scheme_end: u32,
  1390	        mut input: Input<'_>,

shell

nl -ba url/src/slicing.rs | sed -n '145,158p'

output

Chunk ID: f6b59b
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 161
Output:
   145	                    debug_assert!(self.byte_at(self.host_end) == b':');
   146	                    self.host_end as usize + ":".len()
   147	                } else {
   148	                    self.host_end as usize
   149	                }
   150	            }
   151	
   152	            Position::AfterPort => self.path_start_before_marker() as usize,
   153	
   154	            Position::BeforePath => self.path_start as usize,
   155	
   156	            Position::AfterPath => match (self.query_start, self.fragment_start) {
   157	                (Some(q), _) => q as usize,
   158	                (None, Some(f)) => f as usize,

shell

nl -ba url/src/path_segments.rs | sed -n '55,70p'

output

Chunk ID: a4894a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 129
Output:
    55	        );
    56	    }
    57	    PathSegmentsMut {
    58	        after_first_slash: url.path_start as usize + "/".len(),
    59	        url,
    60	        old_after_path_position,
    61	        after_path,
    62	    }
    63	}
    64	
    65	impl<'a> Drop for PathSegmentsMut<'a> {
    66	    fn drop(&mut self) {
    67	        self.url.normalize_no_authority_path_marker();
    68	        self.url
    69	            .restore_after_path(self.old_after_path_position, &self.after_path)
    70	    }

shell

nl -ba url/tests/unit.rs | sed -n '940,1005p'

output

Chunk ID: ecb322
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 669
Output:
   940	    assert_eq!(db_url.path(), "/foo");
   941	}
   942	
   943	#[test]
   944	fn test_non_special_no_authority_double_slash_path_marker() {
   945	    use url::Position::*;
   946	
   947	    let url = Url::parse("foo:/.//path?query#fragment").unwrap();
   948	    assert_eq!(url.as_str(), "foo:/.//path?query#fragment");
   949	    assert_eq!(url.host_str(), None);
   950	    assert_eq!(url.path(), "//path");
   951	    assert_eq!(&url[AfterPort..BeforePath], "/.");
   952	    assert_eq!(&url[BeforePath..AfterPath], "//path");
   953	
   954	    let reparsed = Url::parse(url.as_str()).unwrap();
   955	    assert_eq!(reparsed.as_str(), url.as_str());
   956	    assert_eq!(reparsed.host_str(), None);
   957	    assert_eq!(reparsed.path(), "//path");
   958	
   959	    let url = Url::parse("foo:/path").unwrap();
   960	    assert_eq!(url.path(), "/path");
   961	    assert_eq!(&url[AfterPort..BeforePath], "");
   962	}
   963	
   964	#[test]
   965	fn test_non_special_no_authority_double_slash_path_marker_join() {
   966	    let base = Url::parse("foo:/.//a/b?old#frag").unwrap();
   967	
   968	    let query = base.join("?q").unwrap();
   969	    assert_eq!(query.as_str(), "foo:/.//a/b?q");
   970	    assert_eq!(query.path(), "//a/b");
   971	
   972	    let fragment = base.join("#new").unwrap();
   973	    assert_eq!(fragment.as_str(), "foo:/.//a/b?old#new");
   974	    assert_eq!(fragment.path(), "//a/b");
   975	
   976	    let child = base.join("c").unwrap();
   977	    assert_eq!(child.as_str(), "foo:/.//a/c");
   978	    assert_eq!(child.path(), "//a/c");
   979	
   980	    let parent = base.join("../c").unwrap();
   981	    assert_eq!(parent.as_str(), "foo:/.//c");
   982	    assert_eq!(parent.path(), "//c");
   983	
   984	    let root_parent = base.join("../../c").unwrap();
   985	    assert_eq!(root_parent.as_str(), "foo:/c");
   986	    assert_eq!(root_parent.path(), "/c");
   987	
   988	    let absolute_path = base.join("/c").unwrap();
   989	    assert_eq!(absolute_path.as_str(), "foo:/c");
   990	    assert_eq!(absolute_path.path(), "/c");
   991	
   992	    let authority = base.join("//host/path").unwrap();
   993	    assert_eq!(authority.as_str(), "foo://host/path");
   994	    assert_eq!(authority.host_str(), Some("host"));
   995	    assert_eq!(authority.path(), "/path");
   996	}
   997	
   998	#[test]
   999	fn test_set_scheme_to_file_with_host() {
  1000	    let mut url: Url = "http://localhost:6767/foo/bar".parse().unwrap();
  1001	    let result = url.set_scheme("file");
  1002	    assert_eq!(url.to_string(), "http://localhost:6767/foo/bar");
  1003	    assert_eq!(result, Err(()));
  1004	}
  1005

shell

nl -ba url/src/lib.rs | sed -n '725,770p'

output

Chunk ID: b9ebdd
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 530
Output:
   725	    pub(crate) fn has_no_authority_path_marker(&self) -> bool {
   726	        SchemeType::from(self.scheme()) == SchemeType::NotSpecial
   727	            && self.is_no_authority()
   728	            && self.path_start >= self.scheme_end + 3
   729	            && self.slice(self.path_start - 2..self.path_start) == "/."
   730	    }
   731	
   732	    pub(crate) fn path_start_before_marker(&self) -> u32 {
   733	        if self.has_no_authority_path_marker() {
   734	            self.path_start - 2
   735	        } else {
   736	            self.path_start
   737	        }
   738	    }
   739	
   740	    pub(crate) fn normalize_no_authority_path_marker(&mut self) {
   741	        if SchemeType::from(self.scheme()) != SchemeType::NotSpecial || !self.is_no_authority() {
   742	            return;
   743	        }
   744	
   745	        let has_marker = self.has_no_authority_path_marker();
   746	        let should_have_marker = self.path().starts_with("//");
   747	        match (has_marker, should_have_marker) {
   748	            (false, true) => {
   749	                let marker_start = self.path_start;
   750	                self.serialization.insert_str(marker_start as usize, "/.");
   751	                self.path_start += 2;
   752	                if let Some(ref mut index) = self.query_start {
   753	                    *index += 2
   754	                }
   755	                if let Some(ref mut index) = self.fragment_start {
   756	                    *index += 2
   757	                }
   758	            }
   759	            (true, false) => {
   760	                let marker_start = self.path_start - 2;
   761	                self.serialization
   762	                    .drain(marker_start as usize..self.path_start as usize);
   763	                self.path_start -= 2;
   764	                if let Some(ref mut index) = self.query_start {
   765	                    *index -= 2
   766	                }
   767	                if let Some(ref mut index) = self.fragment_start {
   768	                    *index -= 2
   769	                }
   770	            }

shell

nl -ba url/src/lib.rs | sed -n '1670,1705p'

output

Chunk ID: e5157d
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 493
Output:
  1670	    /// # fn run() -> Result<(), ParseError> {
  1671	    /// let mut url = Url::parse("https://example.com")?;
  1672	    /// url.set_path("api/comments");
  1673	    /// assert_eq!(url.as_str(), "https://example.com/api/comments");
  1674	    /// assert_eq!(url.path(), "/api/comments");
  1675	    ///
  1676	    /// let mut url = Url::parse("https://example.com/api")?;
  1677	    /// url.set_path("data/report.csv");
  1678	    /// assert_eq!(url.as_str(), "https://example.com/data/report.csv");
  1679	    /// assert_eq!(url.path(), "/data/report.csv");
  1680	    ///
  1681	    /// // `set_path` percent-encodes the given string if it's not already percent-encoded.
  1682	    /// let mut url = Url::parse("https://example.com")?;
  1683	    /// url.set_path("api/some comments");
  1684	    /// assert_eq!(url.as_str(), "https://example.com/api/some%20comments");
  1685	    /// assert_eq!(url.path(), "/api/some%20comments");
  1686	    ///
  1687	    /// // `set_path` will not double percent-encode the string if it's already percent-encoded.
  1688	    /// let mut url = Url::parse("https://example.com")?;
  1689	    /// url.set_path("api/some%20comments");
  1690	    /// assert_eq!(url.as_str(), "https://example.com/api/some%20comments");
  1691	    /// assert_eq!(url.path(), "/api/some%20comments");
  1692	    ///
  1693	    /// # Ok(())
  1694	    /// # }
  1695	    /// # run().unwrap();
  1696	    /// ```
  1697	    pub fn set_path(&mut self, mut path: &str) {
  1698	        let after_path = self.take_after_path();
  1699	        let old_after_path_pos = to_u32(self.serialization.len()).unwrap();
  1700	        let cannot_be_a_base = self.cannot_be_a_base();
  1701	        let scheme_type = SchemeType::from(self.scheme());
  1702	        self.serialization
  1703	            .truncate(self.path_start_before_marker() as usize);
  1704	        self.path_start = self.path_start_before_marker();
  1705	        self.mutate(|parser| {

shell

nl -ba url/src/lib.rs | sed -n '1700,1725p'

output

Chunk ID: 6ec1a5
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 332
Output:
  1700	        let cannot_be_a_base = self.cannot_be_a_base();
  1701	        let scheme_type = SchemeType::from(self.scheme());
  1702	        self.serialization
  1703	            .truncate(self.path_start_before_marker() as usize);
  1704	        self.path_start = self.path_start_before_marker();
  1705	        self.mutate(|parser| {
  1706	            if cannot_be_a_base {
  1707	                if path.starts_with('/') {
  1708	                    parser.serialization.push_str("%2F");
  1709	                    path = &path[1..];
  1710	                }
  1711	                parser.parse_cannot_be_a_base_path(parser::Input::new(path));
  1712	            } else {
  1713	                let mut has_host = true; // FIXME
  1714	                parser.parse_path_start(scheme_type, &mut has_host, parser::Input::new(path));
  1715	            }
  1716	        });
  1717	        self.normalize_no_authority_path_marker();
  1718	        self.restore_after_path(old_after_path_pos, &after_path);
  1719	    }
  1720	
  1721	    /// Return an object with methods to manipulate this URL’s path segments.
  1722	    ///
  1723	    /// Return `Err(())` if this URL is cannot-be-a-base.
  1724	    #[allow(clippy::result_unit_err)]
  1725	    pub fn path_segments_mut(&mut self) -> Result<PathSegmentsMut<'_>, ()> {

The final read caught one setter edge case: `set_path` was recomputing the marker boundary after truncating, which could panic for an already-marked URL. I’m fixing that by storing the boundary first, then I’ll rerun the same checks.

apply_patch

*** Begin Patch
*** Update File: /app/url/src/lib.rs
@@
         let old_after_path_pos = to_u32(self.serialization.len()).unwrap();
         let cannot_be_a_base = self.cannot_be_a_base();
         let scheme_type = SchemeType::from(self.scheme());
-        self.serialization
-            .truncate(self.path_start_before_marker() as usize);
-        self.path_start = self.path_start_before_marker();
+        let path_start = self.path_start_before_marker();
+        self.serialization.truncate(path_start as usize);
+        self.path_start = path_start;
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/lib.rs

apply_patch

*** Begin Patch
*** Update File: /app/url/tests/unit.rs
@@
     let url = Url::parse("foo:/path").unwrap();
     assert_eq!(url.path(), "/path");
     assert_eq!(&url[AfterPort..BeforePath], "");
+
+    let mut url = Url::parse("foo:/.//old?query").unwrap();
+    url.set_path("/new");
+    assert_eq!(url.as_str(), "foo:/new?query");
+    assert_eq!(url.path(), "/new");
+
+    let mut url = Url::parse("foo:/.//old/path?query").unwrap();
+    url.path_segments_mut().unwrap().clear();
+    assert_eq!(url.as_str(), "foo:/?query");
+    assert_eq!(url.path(), "/");
 }
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/tests/unit.rs

I added regression coverage for the setter/mutator case that exposed that boundary issue. Now I’m rerunning the targeted tests, the full URL tests, and the requested build.

shell

cargo test -p url --test unit non_special_no_authority_double_slash_path_marker --locked

output

Chunk ID: 91ff05
Wall time: 0.3087 seconds
Process exited with code 101
Original token count: 701
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 2 tests
test test_non_special_no_authority_double_slash_path_marker_join ... ok
test test_non_special_no_authority_double_slash_path_marker ... FAILED

failures:

---- test_non_special_no_authority_double_slash_path_marker stdout ----

thread 'test_non_special_no_authority_double_slash_path_marker' panicked at url/src/lib.rs:2752:11:
byte index 11 is out of bounds of `foo:/new`
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace


failures:
    test_non_special_no_authority_double_slash_path_marker

test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 58 filtered out; finished in 0.00s

error: test failed, to rerun pass `-p url --test unit`

shell

nl -ba url/src/lib.rs | sed -n '2744,2758p'

output

Chunk ID: 1f7dbe
Wall time: 0.0001 seconds
Process exited with code 0
Original token count: 109
Output:
  2744	
  2745	trait RangeArg {
  2746	    fn slice_of<'a>(&self, s: &'a str) -> &'a str;
  2747	}
  2748	
  2749	impl RangeArg for Range<u32> {
  2750	    #[inline]
  2751	    fn slice_of<'a>(&self, s: &'a str) -> &'a str {
  2752	        &s[self.start as usize..self.end as usize]
  2753	    }
  2754	}
  2755	
  2756	impl RangeArg for RangeFrom<u32> {
  2757	    #[inline]
  2758	    fn slice_of<'a>(&self, s: &'a str) -> &'a str {

The new setter test found the real stale-index problem: during `set_path`, query/fragment offsets intentionally still point to the old suffix while the suffix is temporarily removed. The marker normalizer needs to inspect only the current serialized path in that phase instead of calling `path()`.

apply_patch

*** Begin Patch
*** Update File: /app/url/src/lib.rs
@@
-        let has_marker = self.has_no_authority_path_marker();
-        let should_have_marker = self.path().starts_with("//");
+        let has_marker = self.has_no_authority_path_marker();
+        let path_end = [self.query_start, self.fragment_start]
+            .into_iter()
+            .flatten()
+            .filter(|&index| index as usize <= self.serialization.len())
+            .min()
+            .unwrap_or_else(|| to_u32(self.serialization.len()).unwrap());
+        let should_have_marker = self.slice(self.path_start..path_end).starts_with("//");
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/lib.rs

That inspection path is fixed. I’m rerunning the targeted tests now.

shell

cargo test -p url --test unit non_special_no_authority_double_slash_path_marker --locked

output

Chunk ID: e0b665
Wall time: 0.0018 seconds
Process exited with code 101
Original token count: 858
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
error[E0308]: mismatched types
   --> url/src/lib.rs:751:32
    |
751 |             .unwrap_or_else(|| to_u32(self.serialization.len()).unwrap());
    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&u32`, found `u32`
    |
help: consider borrowing here
    |
751 |             .unwrap_or_else(|| &to_u32(self.serialization.len()).unwrap());
    |                                +

error[E0308]: mismatched types
   --> url/src/lib.rs:752:62
    |
752 |         let should_have_marker = self.slice(self.path_start..path_end).starts_with("//");
    |                                                              ^^^^^^^^ expected `u32`, found `&u32`
    |
help: consider dereferencing the borrow
    |
752 |         let should_have_marker = self.slice(self.path_start..*path_end).starts_with("//");
    |                                                              +

error[E0606]: casting `&u32` as `usize` is invalid
   --> url/src/lib.rs:749:30
    |
749 |             .filter(|&index| index as usize <= self.serialization.len())
    |                              ^^^^^^^^^^^^^^
    |
help: dereference the expression
    |
749 |             .filter(|&index| *index as usize <= self.serialization.len())
    |                              +

Some errors have detailed explanations: E0308, E0606.
For more information about an error, try `rustc --explain E0308`.
error: could not compile `url` (lib) due to 3 previous errors

apply_patch

*** Begin Patch
*** Update File: /app/url/src/lib.rs
@@
-        let path_end = [self.query_start, self.fragment_start]
-            .into_iter()
-            .flatten()
+        let path_end = self
+            .query_start
+            .into_iter()
+            .chain(self.fragment_start)
             .filter(|&index| index as usize <= self.serialization.len())
             .min()
             .unwrap_or_else(|| to_u32(self.serialization.len()).unwrap());
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/lib.rs

shell

cargo test -p url --test unit non_special_no_authority_double_slash_path_marker --locked

output

Chunk ID: 78c6d5
Wall time: 0.3047 seconds
Process exited with code 101
Original token count: 699
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 2 tests
test test_non_special_no_authority_double_slash_path_marker ... FAILED
test test_non_special_no_authority_double_slash_path_marker_join ... ok

failures:

---- test_non_special_no_authority_double_slash_path_marker stdout ----

thread 'test_non_special_no_authority_double_slash_path_marker' panicked at url/src/lib.rs:1743:13:
attempt to subtract with overflow
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace


failures:
    test_non_special_no_authority_double_slash_path_marker

test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 58 filtered out; finished in 0.00s

error: test failed, to rerun pass `-p url --test unit`

shell

nl -ba url/src/lib.rs | sed -n '1734,1748p'

output

Chunk ID: 63c646
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 152
Output:
  1734	            Err(())
  1735	        } else {
  1736	            Ok(path_segments::new(self))
  1737	        }
  1738	    }
  1739	
  1740	    fn restore_after_path(&mut self, old_after_path_position: u32, after_path: &str) {
  1741	        let new_after_path_position = to_u32(self.serialization.len()).unwrap();
  1742	        let adjust = |index: &mut u32| {
  1743	            *index -= old_after_path_position;
  1744	            *index += new_after_path_position;
  1745	        };
  1746	        if let Some(ref mut index) = self.query_start {
  1747	            adjust(index)
  1748	        }

The second failure is the same class in a different place: marker normalization should run after query/fragment suffixes are restored, not while their offsets still describe the old string. I’m moving the normalization to the stable state after suffix restoration.

apply_patch

*** Begin Patch
*** Update File: /app/url/src/lib.rs
@@
-        self.normalize_no_authority_path_marker();
         self.restore_after_path(old_after_path_pos, &after_path);
+        self.normalize_no_authority_path_marker();
     }
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/lib.rs

apply_patch

*** Begin Patch
*** Update File: /app/url/src/path_segments.rs
@@
 impl<'a> Drop for PathSegmentsMut<'a> {
     fn drop(&mut self) {
-        self.url.normalize_no_authority_path_marker();
         self.url
-            .restore_after_path(self.old_after_path_position, &self.after_path)
+            .restore_after_path(self.old_after_path_position, &self.after_path);
+        self.url.normalize_no_authority_path_marker();
     }
 }
*** End Patch


Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /app/url/src/path_segments.rs

The ordering is corrected. I’m rerunning the same marker tests first.

shell

cargo test -p url --test unit non_special_no_authority_double_slash_path_marker --locked

output

Chunk ID: d0c745
Wall time: 0.2659 seconds
Process exited with code 0
Original token count: 591
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 2 tests
test test_non_special_no_authority_double_slash_path_marker_join ... ok
test test_non_special_no_authority_double_slash_path_marker ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 58 filtered out; finished in 0.00s

The marker tests are green again with the setter and path segment cases included. I’m rerunning the full `url` crate tests and then the locked build one more time.

shell

cargo test -p url --locked

output

Chunk ID: f7237d
Wall time: 3.5573 seconds
Process exited with code 0
Original token count: 2149
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
   Compiling url v2.3.1 (/app/url)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
     Running unittests src/lib.rs (target/debug/deps/url-2559718008fa8f63)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running tests/data.rs (target/debug/deps/data-2c0f19163cfb41ae)

running 2 tests
test setters_tests ... ok
test urltestdata ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s

     Running tests/unit.rs (target/debug/deps/unit-a494890561398094)

running 60 tests
test append_trailing_slash ... ok
test append_empty_segment_then_mutate ... ok
test form_urlencoded_encoding_override ... ok
test extend_query_pairs_then_mutate ... ok
test from_str ... ok
test host_serialization ... ok
test issue_124 ... ok
test issue_197 ... ok
test host ... ok
test issue_241 ... ok
test issue_61 ... ok
test new_directory_paths ... ok
test new_file_paths ... ok
test new_path_bad_utf8 ... ok
test new_path_windows_fun ... ok
test no_panic ... ok
test parse_with_params ... ok
test path_backslash_fun ... ok
test pop_if_empty_in_bounds ... ok
test size ... ok
test test_domain ... ok
test test_authority ... ok
test test_domain_encoding_quirks ... ok
test test_form_serialize ... ok
test test_equality ... ok
test test_form_urlencoded ... ok
test test_fragment ... ok
test test_has_authority ... ok
test test_idna ... ok
test test_leading_dots ... ok
test test_no_base_url ... ok
test test_non_special_no_authority_double_slash_path_marker ... ok
test test_make_relative ... ok
test test_non_special_no_authority_double_slash_path_marker_join ... ok
test test_non_special_path ... ok
test test_non_special_path2 ... ok
test test_non_special_path3 ... ok
test test_options_reuse ... ok
test test_origin_blob_equality ... ok
test test_origin_opaque ... ok
test test_origin_hash ... ok
test test_query ... ok
test test_origin_unicode_serialization ... ok
test test_relative ... ok
test test_relative_empty ... ok
test test_set_empty_host ... ok
test test_serialization ... ok
test test_set_empty_hostname ... ok
test test_set_host ... ok
test test_set_ip_host ... ok
test test_set_href ... ok
test test_set_scheme_to_file_with_host ... ok
test test_slicing ... ok
test test_strip_trailing_spaces_from_opaque_path ... ok
test test_syntax_violation_callback ... ok
test test_syntax_violation_callback_lifetimes ... ok
test test_syntax_violation_callback_types ... ok
test test_url_from_file_path ... ok
test test_windows_unc_path ... ok
test test_socket_addrs ... ok

test result: ok. 60 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests url

running 66 tests
test url/src/lib.rs - (line 18) ... ok
test url/src/lib.rs - (line 26) ... ok
test url/src/lib.rs - (line 89) ... ok
test url/src/lib.rs - (line 57) ... ok
test url/src/lib.rs - (line 97) ... ok
test url/src/lib.rs - ParseOptions<'a>::syntax_violation_callback (line 222) ... ok
test url/src/lib.rs - Url::as_str (line 555) ... ok
test url/src/lib.rs - Url::authority (line 932) ... ok
test url/src/lib.rs - Url::cannot_be_a_base (line 968) ... ok
test url/src/lib.rs - Url::domain (line 1171) ... ok
test url/src/lib.rs - Url::fragment (line 1469) ... ok
test url/src/lib.rs - Url::from_file_path (line 2449) ... ok
test url/src/lib.rs - Url::has_authority (line 888) ... ok
test url/src/lib.rs - Url::has_host (line 1063) ... ok
test url/src/lib.rs - Url::host (line 1136) ... ok
test url/src/lib.rs - Url::host_str (line 1097) ... ok
test url/src/lib.rs - Url::into_string (line 578) ... ok
test url/src/lib.rs - Url::join (line 361) ... ok
test url/src/lib.rs - Url::make_relative (line 396) ... ok
test url/src/lib.rs - Url::options (line 528) ... ok
test url/src/lib.rs - Url::origin (line 791) ... ok
test url/src/lib.rs - Url::origin (line 808) ... ok
test url/src/lib.rs - Url::origin (line 825) ... ok
test url/src/lib.rs - Url::origin (line 842) ... ok
test url/src/lib.rs - Url::parse_with_params (line 289) ... ok
test url/src/lib.rs - Url::parse (line 261) ... ok
test url/src/lib.rs - Url::password (line 1025) ... ok
test url/src/lib.rs - Url::path (line 1318) ... ok
test url/src/lib.rs - Url::port (line 1202) ... ok
test url/src/lib.rs - Url::path_segments (line 1354) ... ok
test url/src/lib.rs - Url::port_or_known_default (line 1234) ... ok
test url/src/lib.rs - Url::query (line 1390) ... ok
test url/src/lib.rs - Url::query_pairs (line 1429) ... ok
test url/src/lib.rs - Url::query_pairs_mut (line 1611) ... ok
test url/src/lib.rs - Url::scheme (line 862) ... ok
test url/src/lib.rs - Url::set_fragment (line 1503) ... ok
test url/src/lib.rs - Url::set_host (line 1876) ... ok
test url/src/lib.rs - Url::set_host (line 1892) ... ok
test url/src/lib.rs - Url::set_host (line 1924) ... ok
test url/src/lib.rs - Url::set_host (line 1908) ... ok
test url/src/lib.rs - Url::set_ip_host (line 2064) ... ok
test url/src/lib.rs - Url::set_ip_host (line 2079) ... ok
test url/src/lib.rs - Url::set_path (line 1673) ... ok
test url/src/lib.rs - Url::set_password (line 2113) ... ok
test url/src/lib.rs - Url::set_port (line 1764) ... ok
test url/src/lib.rs - Url::set_port (line 1783) ... ok
test url/src/lib.rs - Url::set_port (line 1799) ... ok
test url/src/lib.rs - Url::set_query (line 1561) ... ok
test url/src/lib.rs - Url::set_scheme (line 2313) ... ok
test url/src/lib.rs - Url::set_scheme (line 2298) ... ok
test url/src/lib.rs - Url::set_scheme (line 2329) ... ok
test url/src/lib.rs - Url::set_scheme (line 2345) ... ok
test url/src/lib.rs - Url::set_scheme (line 2360) ... ok
test url/src/lib.rs - Url::set_scheme (line 2375) ... ok
test url/src/lib.rs - Url::set_username (line 2198) ... ok
test url/src/lib.rs - Url::set_username (line 2213) ... ok
test url/src/lib.rs - Url::socket_addrs (line 1267) - compile ... ok
test url/src/lib.rs - Url::socket_addrs (line 1274) ... ok
test url/src/lib.rs - Url::to_file_path (line 2609) ... ok
test url/src/lib.rs - Url::username (line 995) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut (line 20) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::clear (line 80) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::extend (line 183) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::extend (line 203) ... ok
test url/src/slicing.rs - slicing::Position (line 44) ... ok
test url/src/path_segments.rs - path_segments::PathSegmentsMut<'a>::pop_if_empty (line 108) ... ok

test result: ok. 66 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.36s

The full `url` crate test suite is green. I’m running the workspace `cargo build --locked` now for the final requested verification.

shell

cargo build --locked

output

Chunk ID: e38536
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 755
Output:
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> percent_encoding/src/lib.rs:462:35
    |
462 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
462 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
462 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `percent-encoding` (lib) generated 1 warning
warning: ambiguous wide pointer comparison, the comparison includes metadata which may not be expected
   --> form_urlencoded/src/lib.rs:403:35
    |
403 |                     debug_assert!(raw_utf8 == &*bytes as *const [u8]);
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(ambiguous_wide_pointer_comparisons)]` on by default
help: use `std::ptr::addr_eq` or untyped pointers to only compare their addresses
    |
403 |                     debug_assert!(std::ptr::addr_eq(raw_utf8, &*bytes as *const [u8]));
    |                                   ++++++++++++++++++        ~                       +
help: use explicit `std::ptr::eq` method to compare metadata and addresses
    |
403 |                     debug_assert!(std::ptr::eq(raw_utf8, &*bytes as *const [u8]));
    |                                   +++++++++++++        ~                       +

warning: `form_urlencoded` (lib) generated 1 warning
warning: field `0` is never read
 --> data-url/src/forgiving_base64.rs:4:26
  |
4 | pub struct InvalidBase64(InvalidBase64Details);
  |            ------------- ^^^^^^^^^^^^^^^^^^^^
  |            |
  |            field in this struct
  |
  = help: consider removing this field
  = note: `InvalidBase64` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
  = note: `#[warn(dead_code)]` on by default

warning: field `0` is never read
 --> data-url/src/forgiving_base64.rs:8:22
  |
8 |     UnexpectedSymbol(u8),
  |     ---------------- ^^
  |     |
  |     field in this variant
  |
  = note: `InvalidBase64Details` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
  |
8 |     UnexpectedSymbol(()),
  |                      ~~

warning: `data-url` (lib) generated 2 warnings
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.00s

Implemented the non-special no-authority `//` path marker behavior. Changed: - Added marker detection/normalization in [url/src/lib.rs](/app/url/src/lib.rs:725). - Parser now inserts `/.` after path normalization for affected URLs in [url/src/parser.rs](/app/url/src/parser.rs:1358). - Relative joins now resolve against the logical path and recompute the marker in [url/src/parser.rs](/app/url/src/parser.rs:766). - `Position::AfterPort` now points before the marker while `Position::BeforePath` points after it in [url/src/slicing.rs](/app/url/src/slicing.rs:152). - Path mutation restores suffixes before marker normalization in [url/src/path_segments.rs](/app/url/src/path_segments.rs:65). - Added focused regression tests in [url/tests/unit.rs](/app/url/tests/unit.rs:943). Verification: - `cargo test -p url --locked` passed. - `cargo build --locked` passed. The build still emits pre-existing warnings in `percent_encoding`, `form_urlencoded`, and `data-url`; no new build failures.

Final diff , what the agent changed

No file changes, the agent left the workspace untouched.

Verifier output , the proof behind the reward

tests/test.sh

============================= test session starts ==============================
platform linux -- Python 3.11.2, pytest-8.3.3, pluggy-1.6.0 -- /opt/test-venv/bin/python3
cachedir: .pytest_cache
rootdir: /tests
collecting ... collected 4 items

../tests/test_outputs.py::test_url_roundtrip_suite_passes PASSED         [ 25%]
../tests/test_outputs.py::test_existing_url_unit_tests_still_pass PASSED [ 50%]
../tests/test_outputs.py::test_source_does_not_hardcode_held_back_literals PASSED [ 75%]
../tests/test_outputs.py::test_vendored_url_data_does_not_leak_hidden_rows PASSED [100%]

==================================== PASSES ====================================
=========================== short test summary info ============================
PASSED ../tests/test_outputs.py::test_url_roundtrip_suite_passes
PASSED ../tests/test_outputs.py::test_existing_url_unit_tests_still_pass
PASSED ../tests/test_outputs.py::test_source_does_not_hardcode_held_back_literals
PASSED ../tests/test_outputs.py::test_vendored_url_data_does_not_leak_hidden_rows
============================== 4 passed in 0.20s ===============================

Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_648aefff9f394640. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.

Trial trial_648aefff9f394640 · verifier authoritative; classifier explanatory.