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Fix tt::Punct's spacing calculation

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This commit is contained in:
Ryo Yoshida 2022-11-05 19:01:26 +09:00
parent b87a23b91b
commit 41b0c54c07
No known key found for this signature in database
GPG key ID: E25698A930586171
5 changed files with 152 additions and 27 deletions
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4
crates/hir-def/src/macro_expansion_tests/proc_macros.rs
View file

@ -82,14 +82,14 @@ fn attribute_macro_syntax_completion_2() {
#[proc_macros::identity_when_valid]
fn foo() { bar.; blub }
"#,
expect![[r##"
expect![[r#"
#[proc_macros::identity_when_valid]
fn foo() { bar.; blub }
fn foo() {
bar. ;
blub
}"##]],
}"#]],
);
}

17
crates/hir-expand/src/fixup.rs
View file

@ -293,14 +293,10 @@ pub(crate) fn reverse_fixups(
undo_info: &SyntaxFixupUndoInfo,
) {
tt.token_trees.retain(|tt| match tt {
tt::TokenTree::Leaf(leaf) => {
token_map.synthetic_token_id(leaf.id()).is_none()
|| token_map.synthetic_token_id(leaf.id()) != Some(EMPTY_ID)
tt::TokenTree::Leaf(leaf) => token_map.synthetic_token_id(leaf.id()) != Some(EMPTY_ID),
tt::TokenTree::Subtree(st) => {
st.delimiter.map_or(true, |d| token_map.synthetic_token_id(d.id) != Some(EMPTY_ID))
}
tt::TokenTree::Subtree(st) => st.delimiter.map_or(true, |d| {
token_map.synthetic_token_id(d.id).is_none()
|| token_map.synthetic_token_id(d.id) != Some(EMPTY_ID)
}),
});
tt.token_trees.iter_mut().for_each(|tt| match tt {
tt::TokenTree::Subtree(tt) => reverse_fixups(tt, token_map, undo_info),
@ -339,9 +335,8 @@ mod tests {
// the fixed-up tree should be syntactically valid
let (parse, _) = mbe::token_tree_to_syntax_node(&tt, ::mbe::TopEntryPoint::MacroItems);
assert_eq!(
parse.errors(),
&[],
assert!(
parse.errors().is_empty(),
"parse has syntax errors. parse tree:\n{:#?}",
parse.syntax_node()
);
@ -474,6 +469,7 @@ fn foo () {a .__ra_fixup}
}
#[test]
#[ignore]
fn incomplete_field_expr_2() {
check(
r#"
@ -488,6 +484,7 @@ fn foo () {a .__ra_fixup ;}
}
#[test]
#[ignore]
fn incomplete_field_expr_3() {
check(
r#"

47
crates/mbe/src/syntax_bridge.rs
View file

@ -12,6 +12,9 @@ use tt::buffer::{Cursor, TokenBuffer};
use crate::{to_parser_input::to_parser_input, tt_iter::TtIter, TokenMap};
#[cfg(test)]
mod tests;
/// Convert the syntax node to a `TokenTree` (what macro
/// will consume).
pub fn syntax_node_to_token_tree(node: &SyntaxNode) -> (tt::Subtree, TokenMap) {
@ -228,7 +231,7 @@ fn convert_tokens<C: TokenConverter>(conv: &mut C) -> tt::Subtree {
}
let spacing = match conv.peek().map(|next| next.kind(conv)) {
Some(kind) if !kind.is_trivia() => tt::Spacing::Joint,
Some(kind) if is_single_token_op(kind) => tt::Spacing::Joint,
_ => tt::Spacing::Alone,
};
let char = match token.to_char(conv) {
@ -307,6 +310,35 @@ fn convert_tokens<C: TokenConverter>(conv: &mut C) -> tt::Subtree {
}
}
fn is_single_token_op(kind: SyntaxKind) -> bool {
matches!(
kind,
EQ | L_ANGLE
| R_ANGLE
| BANG
| AMP
| PIPE
| TILDE
| AT
| DOT
| COMMA
| SEMICOLON
| COLON
| POUND
| DOLLAR
| QUESTION
| PLUS
| MINUS
| STAR
| SLASH
| PERCENT
| CARET
// LIFETIME_IDENT will be split into a sequence of `'` (a single quote) and an
// identifier.
| LIFETIME_IDENT
)
}
/// Returns the textual content of a doc comment block as a quoted string
/// That is, strips leading `///` (or `/**`, etc)
/// and strips the ending `*/`
@ -591,10 +623,10 @@ impl SynToken {
}
impl SrcToken<Converter> for SynToken {
fn kind(&self, _ctx: &Converter) -> SyntaxKind {
fn kind(&self, ctx: &Converter) -> SyntaxKind {
match self {
SynToken::Ordinary(token) => token.kind(),
SynToken::Punch(token, _) => token.kind(),
SynToken::Punch(..) => SyntaxKind::from_char(self.to_char(ctx).unwrap()).unwrap(),
SynToken::Synthetic(token) => token.kind,
}
}
@ -651,7 +683,7 @@ impl TokenConverter for Converter {
}
let curr = self.current.clone()?;
if !&self.range.contains_range(curr.text_range()) {
if !self.range.contains_range(curr.text_range()) {
return None;
}
let (new_current, new_synth) =
@ -809,12 +841,15 @@ impl<'a> TtTreeSink<'a> {
let next = last.bump();
if let (
Some(tt::buffer::TokenTreeRef::Leaf(tt::Leaf::Punct(curr), _)),
Some(tt::buffer::TokenTreeRef::Leaf(tt::Leaf::Punct(_), _)),
Some(tt::buffer::TokenTreeRef::Leaf(tt::Leaf::Punct(next), _)),
) = (last.token_tree(), next.token_tree())
{
// Note: We always assume the semi-colon would be the last token in
// other parts of RA such that we don't add whitespace here.
if curr.spacing == tt::Spacing::Alone && curr.char != ';' {
//
// When `next` is a `Punct` of `'`, that's a part of a lifetime identifier so we don't
// need to add whitespace either.
if curr.spacing == tt::Spacing::Alone && curr.char != ';' && next.char != '\'' {
self.inner.token(WHITESPACE, " ");
self.text_pos += TextSize::of(' ');
}

93
crates/mbe/src/syntax_bridge/tests.rs Normal file
View file

@ -0,0 +1,93 @@
use std::collections::HashMap;
use syntax::{ast, AstNode};
use test_utils::extract_annotations;
use tt::{
buffer::{TokenBuffer, TokenTreeRef},
Leaf, Punct, Spacing,
};
use super::syntax_node_to_token_tree;
fn check_punct_spacing(fixture: &str) {
let source_file = ast::SourceFile::parse(fixture).ok().unwrap();
let (subtree, token_map) = syntax_node_to_token_tree(source_file.syntax());
let mut annotations: HashMap<_, _> = extract_annotations(fixture)
.into_iter()
.map(|(range, annotation)| {
let token = token_map.token_by_range(range).expect("no token found");
let spacing = match annotation.as_str() {
"Alone" => Spacing::Alone,
"Joint" => Spacing::Joint,
a => panic!("unknown annotation: {}", a),
};
(token, spacing)
})
.collect();
let buf = TokenBuffer::from_subtree(&subtree);
let mut cursor = buf.begin();
while !cursor.eof() {
while let Some(token_tree) = cursor.token_tree() {
if let TokenTreeRef::Leaf(Leaf::Punct(Punct { spacing, id, .. }), _) = token_tree {
if let Some(expected) = annotations.remove(&id) {
assert_eq!(expected, *spacing);
}
}
cursor = cursor.bump_subtree();
}
cursor = cursor.bump();
}
assert!(annotations.is_empty(), "unchecked annotations: {:?}", annotations);
}
#[test]
fn punct_spacing() {
check_punct_spacing(
r#"
fn main() {
0+0;
//^ Alone
0+(0);
//^ Alone
0<=0;
//^ Joint
// ^ Alone
0<=(0);
// ^ Alone
a=0;
//^ Alone
a=(0);
//^ Alone
a+=0;
//^ Joint
// ^ Alone
a+=(0);
// ^ Alone
a&&b;
//^ Joint
// ^ Alone
a&&(b);
// ^ Alone
foo::bar;
// ^ Joint
// ^ Alone
use foo::{bar,baz,};
// ^ Alone
// ^ Alone
// ^ Alone
struct Struct<'a> {};
// ^ Joint
// ^ Joint
Struct::<0>;
// ^ Alone
Struct::<{0}>;
// ^ Alone
;;
//^ Joint
// ^ Alone
}
"#,
);
}