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Lazily compute ranges for class and function bindings (#1708)

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This has a fairly significant performance impact (~320ms to ~307ms on
the CPython benchmark).
This commit is contained in:
Charlie Marsh 2023-01-06 22:55:13 -05:00 • committed by GitHub
parent 0527fb9335
commit 3abd205f94
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2 changed files with 22 additions and 6 deletions
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18
src/ast/helpers.rs
View file

@ -11,7 +11,7 @@ use rustpython_parser::lexer;
use rustpython_parser::lexer::Tok;
use rustpython_parser::token::StringKind;
use crate::ast::types::Range;
use crate::ast::types::{Binding, BindingKind, Range};
use crate::source_code_generator::SourceCodeGenerator;
use crate::source_code_style::SourceCodeStyleDetector;
use crate::SourceCodeLocator;
@ -406,6 +406,22 @@ pub fn identifier_range(stmt: &Stmt, locator: &SourceCodeLocator) -> Range {
Range::from_located(stmt)
}
/// Like `identifier_range`, but accepts a `Binding`.
pub fn binding_range(binding: &Binding, locator: &SourceCodeLocator) -> Range {
if matches!(
binding.kind,
BindingKind::ClassDefinition | BindingKind::FunctionDefinition
) {
if let Some(source) = &binding.source {
identifier_range(source, locator)
} else {
binding.range
}
} else {
binding.range
}
}
// Return the ranges of `Name` tokens within a specified node.
pub fn find_names<T>(located: &Located<T>, locator: &SourceCodeLocator) -> Vec<Range> {
let contents = locator.slice_source_code_range(&Range::from_located(located));

10
src/checkers/ast.rs
View file

@ -15,7 +15,7 @@ use rustpython_parser::ast::{
use rustpython_parser::parser;
use crate::ast::helpers::{
collect_call_paths, dealias_call_path, extract_handler_names, match_call_path,
binding_range, collect_call_paths, dealias_call_path, extract_handler_names, match_call_path,
};
use crate::ast::operations::extract_all_names;
use crate::ast::relocate::relocate_expr;
@ -560,7 +560,7 @@ where
Binding {
kind: BindingKind::FunctionDefinition,
used: None,
range: helpers::identifier_range(stmt, self.locator),
range: Range::from_located(stmt),
source: Some(self.current_stmt().clone()),
},
);
@ -1544,7 +1544,7 @@ where
Binding {
kind: BindingKind::ClassDefinition,
used: None,
range: helpers::identifier_range(stmt, self.locator),
range: Range::from_located(stmt),
source: Some(self.current_stmt().clone()),
},
);
@ -3373,7 +3373,7 @@ impl<'a> Checker<'a> {
name.to_string(),
existing.range.location.row(),
),
binding.range,
binding_range(&binding, self.locator),
));
}
}
@ -3935,7 +3935,7 @@ impl<'a> Checker<'a> {
(*name).to_string(),
binding.range.location.row(),
),
self.bindings[*index].range,
binding_range(&self.bindings[*index], self.locator),
));
}
}