Remove source_code's dependency on pydocstyle (#3366)

crates/ruff/src/ast/mod.rs

@@ -8,6 +8,7 @@ pub mod helpers;
 pub mod logging;
 pub mod operations;
 pub mod relocate;
+pub mod strings;
 pub mod types;
 pub mod typing;
 pub mod visitor;

crates/ruff/src/ast/strings.rs

@@ -0,0 +1,38 @@
+use ruff_python_stdlib::str::{
+    SINGLE_QUOTE_PREFIXES, SINGLE_QUOTE_SUFFIXES, TRIPLE_QUOTE_PREFIXES, TRIPLE_QUOTE_SUFFIXES,
+};
+
+/// Strip the leading and trailing quotes from a docstring.
+pub fn raw_contents(contents: &str) -> &str {
+    for pattern in TRIPLE_QUOTE_PREFIXES {
+        if contents.starts_with(pattern) {
+            return &contents[pattern.len()..contents.len() - 3];
+        }
+    }
+    for pattern in SINGLE_QUOTE_PREFIXES {
+        if contents.starts_with(pattern) {
+            return &contents[pattern.len()..contents.len() - 1];
+        }
+    }
+    unreachable!("Expected docstring to start with a valid triple- or single-quote prefix")
+}
+
+/// Return the leading quote string for a docstring (e.g., `"""`).
+pub fn leading_quote(content: &str) -> Option<&str> {
+    if let Some(first_line) = content.lines().next() {
+        for pattern in TRIPLE_QUOTE_PREFIXES.iter().chain(SINGLE_QUOTE_PREFIXES) {
+            if first_line.starts_with(pattern) {
+                return Some(pattern);
+            }
+        }
+    }
+    None
+}
+
+/// Return the trailing quote string for a docstring (e.g., `"""`).
+pub fn trailing_quote(content: &str) -> Option<&&str> {
+    TRIPLE_QUOTE_SUFFIXES
+        .iter()
+        .chain(SINGLE_QUOTE_SUFFIXES)
+        .find(|&pattern| content.ends_with(pattern))
+}

crates/ruff/src/checkers/ast/mod.rs

@@ -43,7 +43,7 @@ use crate::settings::types::PythonVersion;
 use crate::settings::{flags, Settings};
 use crate::source_code::{Indexer, Locator, Stylist};
 use crate::visibility::transition_scope;
-use crate::{autofix, docstrings, noqa, visibility};
+use crate::{ast, autofix, docstrings, noqa, visibility};
 
 mod deferred;
 
@@ -5298,7 +5298,7 @@ impl<'a> Checker<'a> {
                     Location::new(expr.location.row(), expr.location.column()),
                 ));
 
-                let body = pydocstyle::helpers::raw_contents(contents);
+                let body = ast::strings::raw_contents(contents);
                 let docstring = Docstring {
                     kind: definition.kind,
                     expr,

crates/ruff/src/rules/pydocstyle/helpers.rs

@@ -1,49 +1,10 @@
 use std::collections::BTreeSet;
 
-use ruff_python_stdlib::str::{
-    SINGLE_QUOTE_PREFIXES, SINGLE_QUOTE_SUFFIXES, TRIPLE_QUOTE_PREFIXES, TRIPLE_QUOTE_SUFFIXES,
-};
-
 use crate::ast::cast;
 use crate::ast::helpers::{map_callable, to_call_path};
 use crate::checkers::ast::Checker;
 use crate::docstrings::definition::{Definition, DefinitionKind};
 
-/// Strip the leading and trailing quotes from a docstring.
-pub fn raw_contents(contents: &str) -> &str {
-    for pattern in TRIPLE_QUOTE_PREFIXES {
-        if contents.starts_with(pattern) {
-            return &contents[pattern.len()..contents.len() - 3];
-        }
-    }
-    for pattern in SINGLE_QUOTE_PREFIXES {
-        if contents.starts_with(pattern) {
-            return &contents[pattern.len()..contents.len() - 1];
-        }
-    }
-    unreachable!("Expected docstring to start with a valid triple- or single-quote prefix")
-}
-
-/// Return the leading quote string for a docstring (e.g., `"""`).
-pub fn leading_quote(content: &str) -> Option<&str> {
-    if let Some(first_line) = content.lines().next() {
-        for pattern in TRIPLE_QUOTE_PREFIXES.iter().chain(SINGLE_QUOTE_PREFIXES) {
-            if first_line.starts_with(pattern) {
-                return Some(pattern);
-            }
-        }
-    }
-    None
-}
-
-/// Return the trailing quote string for a docstring (e.g., `"""`).
-pub fn trailing_quote(content: &str) -> Option<&&str> {
-    TRIPLE_QUOTE_SUFFIXES
-        .iter()
-        .chain(SINGLE_QUOTE_SUFFIXES)
-        .find(|&pattern| content.ends_with(pattern))
-}
-
 /// Return the index of the first logical line in a string.
 pub fn logical_line(content: &str) -> Option<usize> {
     // Find the first logical line.

crates/ruff/src/rules/pydocstyle/rules/ends_with_period.rs

@@ -2,6 +2,7 @@ use strum::IntoEnumIterator;
 
 use ruff_macros::{derive_message_formats, violation};
 
+use crate::ast::strings::leading_quote;
 use crate::ast::types::Range;
 use crate::checkers::ast::Checker;
 use crate::docstrings::definition::Docstring;
@@ -9,7 +10,7 @@ use crate::docstrings::sections::SectionKind;
 use crate::fix::Fix;
 use crate::message::Location;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers::{leading_quote, logical_line};
+use crate::rules::pydocstyle::helpers::logical_line;
 use crate::violation::AlwaysAutofixableViolation;
 
 #[violation]

crates/ruff/src/rules/pydocstyle/rules/ends_with_punctuation.rs

@@ -2,6 +2,7 @@ use strum::IntoEnumIterator;
 
 use ruff_macros::{derive_message_formats, violation};
 
+use crate::ast::strings::leading_quote;
 use crate::ast::types::Range;
 use crate::checkers::ast::Checker;
 use crate::docstrings::definition::Docstring;
@@ -9,7 +10,7 @@ use crate::docstrings::sections::SectionKind;
 use crate::fix::Fix;
 use crate::message::Location;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers::{leading_quote, logical_line};
+use crate::rules::pydocstyle::helpers::logical_line;
 use crate::violation::AlwaysAutofixableViolation;
 
 #[violation]

crates/ruff/src/rules/pydocstyle/rules/multi_line_summary_start.rs

@@ -1,6 +1,7 @@
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_stdlib::str::TRIPLE_QUOTE_PREFIXES;
 
+use crate::ast::strings::leading_quote;
 use crate::ast::types::Range;
 use crate::ast::whitespace::LinesWithTrailingNewline;
 use crate::checkers::ast::Checker;
@@ -8,7 +9,6 @@ use crate::docstrings::definition::{DefinitionKind, Docstring};
 use crate::fix::Fix;
 use crate::message::Location;
 use crate::registry::{Diagnostic, Rule};
-use crate::rules::pydocstyle::helpers::leading_quote;
 use crate::violation::AlwaysAutofixableViolation;
 
 #[violation]

crates/ruff/src/rules/pydocstyle/rules/no_surrounding_whitespace.rs

@@ -1,5 +1,6 @@
 use ruff_macros::{derive_message_formats, violation};
 
+use crate::ast::strings::leading_quote;
 use crate::ast::types::Range;
 use crate::ast::whitespace::LinesWithTrailingNewline;
 use crate::checkers::ast::Checker;
@@ -7,7 +8,6 @@ use crate::docstrings::definition::Docstring;
 use crate::fix::Fix;
 use crate::message::Location;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers::leading_quote;
 use crate::violation::AlwaysAutofixableViolation;
 
 #[violation]

crates/ruff/src/rules/pydocstyle/rules/one_liner.rs

@@ -1,12 +1,12 @@
 use ruff_macros::{derive_message_formats, violation};
 
+use crate::ast::strings::{leading_quote, trailing_quote};
 use crate::ast::types::Range;
 use crate::ast::whitespace::LinesWithTrailingNewline;
 use crate::checkers::ast::Checker;
 use crate::docstrings::definition::Docstring;
 use crate::fix::Fix;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers;
 use crate::violation::AlwaysAutofixableViolation;
 
 #[violation]
@@ -41,8 +41,8 @@ pub fn one_liner(checker: &mut Checker, docstring: &Docstring) {
         let mut diagnostic = Diagnostic::new(FitsOnOneLine, Range::from_located(docstring.expr));
         if checker.patch(diagnostic.kind.rule()) {
             if let (Some(leading), Some(trailing)) = (
-                helpers::leading_quote(docstring.contents),
-                helpers::trailing_quote(docstring.contents),
+                leading_quote(docstring.contents),
+                trailing_quote(docstring.contents),
             ) {
                 // If removing whitespace would lead to an invalid string of quote
                 // characters, avoid applying the fix.

crates/ruff/src/rules/pylint/rules/bad_string_format_type.rs

@@ -6,10 +6,10 @@ use rustpython_common::cformat::{CFormatPart, CFormatSpec, CFormatStrOrBytes, CF
 use rustpython_parser::ast::{Constant, Expr, ExprKind, Location, Operator};
 use rustpython_parser::{lexer, Mode, Tok};
 
+use crate::ast::strings::{leading_quote, trailing_quote};
 use crate::ast::types::Range;
 use crate::checkers::ast::Checker;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers::{leading_quote, trailing_quote};
 use crate::violation::Violation;
 
 /// ## What it does

crates/ruff/src/rules/pyupgrade/rules/f_strings.rs

@@ -6,11 +6,11 @@ use rustpython_common::format::{
 use rustpython_parser::ast::{Constant, Expr, ExprKind, KeywordData};
 use rustpython_parser::{lexer, Mode, Tok};
 
+use crate::ast::strings::{leading_quote, trailing_quote};
 use crate::ast::types::Range;
 use crate::checkers::ast::Checker;
 use crate::fix::Fix;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers::{leading_quote, trailing_quote};
 use crate::rules::pyflakes::format::FormatSummary;
 use crate::rules::pyupgrade::helpers::curly_escape;
 use crate::violation::AlwaysAutofixableViolation;

crates/ruff/src/rules/pyupgrade/rules/printf_string_formatting.rs

@@ -10,12 +10,12 @@ use ruff_macros::{derive_message_formats, violation};
 use ruff_python_stdlib::identifiers::is_identifier;
 use ruff_python_stdlib::keyword::KWLIST;
 
+use crate::ast::strings::{leading_quote, trailing_quote};
 use crate::ast::types::Range;
 use crate::ast::whitespace::indentation;
 use crate::checkers::ast::Checker;
 use crate::fix::Fix;
 use crate::registry::Diagnostic;
-use crate::rules::pydocstyle::helpers::{leading_quote, trailing_quote};
 use crate::rules::pyupgrade::helpers::curly_escape;
 use crate::violation::AlwaysAutofixableViolation;
 

crates/ruff/src/source_code/stylist.rs

@@ -8,8 +8,8 @@ use ruff_rustpython::vendor;
 use rustpython_parser::ast::Location;
 use rustpython_parser::{lexer, Mode, Tok};
 
+use crate::ast::strings::leading_quote;
 use crate::ast::types::Range;
-use crate::rules::pydocstyle::helpers::leading_quote;
 use crate::source_code::Locator;
 
 pub struct Stylist<'a> {