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Use ThinVec in ast::AngleBracketedArgs.

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This commit is contained in:
Nicholas Nethercote 2023-01-30 14:37:06 +11:00
parent b14b7ba5dd
commit 1807027248
6 changed files with 9 additions and 8 deletions
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2
compiler/rustc_ast/src/ast.rs
View File

@ -209,7 +209,7 @@ pub struct AngleBracketedArgs {
/// The overall span.
pub span: Span,
/// The comma separated parts in the `<...>`.
pub args: Vec<AngleBracketedArg>,
pub args: ThinVec<AngleBracketedArg>,
}
/// Either an argument for a parameter e.g., `'a`, `Vec<u8>`, `0`,

2
compiler/rustc_ast/src/mut_visit.rs
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@ -577,7 +577,7 @@ pub fn noop_visit_angle_bracketed_parameter_data<T: MutVisitor>(
vis: &mut T,
) {
let AngleBracketedArgs { args, span } = data;
visit_vec(args, |arg| match arg {
visit_thin_vec(args, |arg| match arg {
AngleBracketedArg::Arg(arg) => vis.visit_generic_arg(arg),
AngleBracketedArg::Constraint(constraint) => vis.visit_constraint(constraint),
});

2
compiler/rustc_ast_lowering/src/expr.rs
View File

@ -376,7 +376,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
// Split the arguments into const generics and normal arguments
let mut real_args = vec![];
let mut generic_args = vec![];
let mut generic_args = ThinVec::new();
for (idx, arg) in args.into_iter().enumerate() {
if legacy_args_idx.contains(&idx) {
let parent_def_id = self.current_hir_id_owner;

3
compiler/rustc_ast_passes/src/ast_validation.rs
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@ -27,6 +27,7 @@ use rustc_span::Span;
use rustc_target::spec::abi;
use std::mem;
use std::ops::{Deref, DerefMut};
use thin_vec::thin_vec;
use crate::errors::*;
@ -1615,7 +1616,7 @@ fn deny_equality_constraints(
empty_args => {
*empty_args = AngleBracketedArgs {
span: ident.span,
args: vec![arg],
args: thin_vec![arg],
}
.into();
}

2
compiler/rustc_parse/src/parser/diagnostics.rs
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@ -2199,7 +2199,7 @@ impl<'a> Parser<'a> {
/// like the user has forgotten them.
pub fn handle_ambiguous_unbraced_const_arg(
&mut self,
args: &mut Vec<AngleBracketedArg>,
args: &mut ThinVec<AngleBracketedArg>,
) -> PResult<'a, bool> {
// If we haven't encountered a closing `>`, then the argument is malformed.
// It's likely that the user has written a const expression without enclosing it

6
compiler/rustc_parse/src/parser/path.rs
View File

@ -332,7 +332,7 @@ impl<'a> Parser<'a> {
style: PathStyle,
lo: Span,
ty_generics: Option<&Generics>,
) -> PResult<'a, Vec<AngleBracketedArg>> {
) -> PResult<'a, ThinVec<AngleBracketedArg>> {
// We need to detect whether there are extra leading left angle brackets and produce an
// appropriate error and suggestion. This cannot be implemented by looking ahead at
// upcoming tokens for a matching `>` character - if there are unmatched `<` tokens
@ -472,8 +472,8 @@ impl<'a> Parser<'a> {
pub(super) fn parse_angle_args(
&mut self,
ty_generics: Option<&Generics>,
) -> PResult<'a, Vec<AngleBracketedArg>> {
let mut args = Vec::new();
) -> PResult<'a, ThinVec<AngleBracketedArg>> {
let mut args = ThinVec::new();
while let Some(arg) = self.parse_angle_arg(ty_generics)? {
args.push(arg);
if !self.eat(&token::Comma) {