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Add token id to delims

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This commit is contained in:
Edwin Cheng 2019-12-13 01:41:44 +08:00
parent aceb9d7fb0
commit 59295854f8
6 changed files with 134 additions and 64 deletions
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14
crates/ra_hir_expand/src/quote.rs
View file

@ -16,7 +16,10 @@ macro_rules! __quote {
{
let children = $crate::__quote!($($tt)*);
let subtree = tt::Subtree {
delimiter: Some(tt::Delimiter::$delim),
delimiter: Some(tt::Delimiter {
kind: tt::DelimiterKind::$delim,
id: tt::TokenId::unspecified(),
}),
token_trees: $crate::quote::IntoTt::to_tokens(children),
};
subtree
@ -257,8 +260,13 @@ mod tests {
let fields =
fields.iter().map(|it| quote!(#it: self.#it.clone(), ).token_trees.clone()).flatten();
let list =
tt::Subtree { delimiter: Some(tt::Delimiter::Brace), token_trees: fields.collect() };
let list = tt::Subtree {
delimiter: Some(tt::Delimiter {
kind: tt::DelimiterKind::Brace,
id: tt::TokenId::unspecified(),
}),
token_trees: fields.collect(),
};
let quoted = quote! {
impl Clone for #struct_name {

2
crates/ra_mbe/src/mbe_expander/matcher.rs
View file

@ -106,7 +106,7 @@ fn match_subtree(
}
Op::TokenTree(tt::TokenTree::Subtree(lhs)) => {
let rhs = src.expect_subtree().map_err(|()| err!("expected subtree"))?;
if lhs.delimiter != rhs.delimiter {
if lhs.delimiter.map(|it| it.kind) != rhs.delimiter.map(|it| it.kind) {
bail!("mismatched delimiter")
}
let mut src = TtIter::new(rhs);

8
crates/ra_mbe/src/subtree_source.rs
View file

@ -115,10 +115,10 @@ impl<'a> TokenSource for SubtreeTokenSource<'a> {
}
fn convert_delim(d: Option<tt::Delimiter>, closing: bool) -> TtToken {
let (kinds, texts) = match d {
Some(tt::Delimiter::Parenthesis) => ([T!['('], T![')']], "()"),
Some(tt::Delimiter::Brace) => ([T!['{'], T!['}']], "{}"),
Some(tt::Delimiter::Bracket) => ([T!['['], T![']']], "[]"),
let (kinds, texts) = match d.map(|it| it.kind) {
Some(tt::DelimiterKind::Parenthesis) => ([T!['('], T![')']], "()"),
Some(tt::DelimiterKind::Brace) => ([T!['{'], T!['}']], "{}"),
Some(tt::DelimiterKind::Bracket) => ([T!['['], T![']']], "[]"),
None => ([L_DOLLAR, R_DOLLAR], ""),
};

138
crates/ra_mbe/src/syntax_bridge.rs
View file

@ -5,6 +5,7 @@ use ra_syntax::{
ast, AstToken, NodeOrToken, Parse, SmolStr, SyntaxKind, SyntaxKind::*, SyntaxNode,
SyntaxTreeBuilder, TextRange, TextUnit, T,
};
use rustc_hash::FxHashMap;
use std::iter::successors;
use tt::buffer::{Cursor, TokenBuffer};
@ -83,6 +84,15 @@ impl TokenMap {
fn insert(&mut self, token_id: tt::TokenId, relative_range: TextRange) {
self.entries.push((token_id, relative_range));
}
fn insert_delim(
&mut self,
_token_id: tt::TokenId,
_open_relative_range: TextRange,
_close_relative_range: TextRange,
) {
// FIXME: Add entries for delimiter
}
}
/// Returns the textual content of a doc comment block as a quoted string
@ -121,7 +131,10 @@ fn convert_doc_comment(token: &ra_syntax::SyntaxToken) -> Option<Vec<tt::TokenTr
token_trees.push(mk_punct('!'));
}
token_trees.push(tt::TokenTree::from(tt::Subtree {
delimiter: Some(tt::Delimiter::Bracket),
delimiter: Some(tt::Delimiter {
kind: tt::DelimiterKind::Bracket,
id: tt::TokenId::unspecified(),
}),
token_trees: meta_tkns,
}));
@ -190,12 +203,16 @@ impl Convertor {
.last()
.unwrap();
let (delimiter, skip_first) = match (first_child.kind(), last_child.kind()) {
(T!['('], T![')']) => (Some(tt::Delimiter::Parenthesis), true),
(T!['{'], T!['}']) => (Some(tt::Delimiter::Brace), true),
(T!['['], T![']']) => (Some(tt::Delimiter::Bracket), true),
let (delimiter_kind, skip_first) = match (first_child.kind(), last_child.kind()) {
(T!['('], T![')']) => (Some(tt::DelimiterKind::Parenthesis), true),
(T!['{'], T!['}']) => (Some(tt::DelimiterKind::Brace), true),
(T!['['], T![']']) => (Some(tt::DelimiterKind::Bracket), true),
_ => (None, false),
};
let delimiter = delimiter_kind.map(|kind| tt::Delimiter {
kind,
id: self.alloc_delim(first_child.text_range(), last_child.text_range()),
});
let mut token_trees = Vec::new();
let mut child_iter = tt.children_with_tokens().skip(skip_first as usize).peekable();
@ -232,25 +249,31 @@ impl Convertor {
.push(tt::Leaf::from(tt::Punct { char, spacing, id }).into());
}
} else {
let child: tt::TokenTree = if token.kind() == T![true]
|| token.kind() == T![false]
{
let id = self.alloc(token.text_range());
tt::Leaf::from(tt::Literal { text: token.text().clone(), id }).into()
} else if token.kind().is_keyword()
|| token.kind() == IDENT
|| token.kind() == LIFETIME
{
let child: tt::Leaf = match token.kind() {
T![true] | T![false] => {
let id = self.alloc(token.text_range());
let text = token.text().clone();
tt::Leaf::from(tt::Ident { text, id }).into()
} else if token.kind().is_literal() {
tt::Literal { text, id }.into()
}
IDENT | LIFETIME => {
let id = self.alloc(token.text_range());
tt::Leaf::from(tt::Literal { text: token.text().clone(), id }).into()
} else {
return None;
let text = token.text().clone();
tt::Ident { text, id }.into()
}
k if k.is_keyword() => {
let id = self.alloc(token.text_range());
let text = token.text().clone();
tt::Ident { text, id }.into()
}
k if k.is_literal() => {
let id = self.alloc(token.text_range());
let text = token.text().clone();
tt::Literal { text, id }.into()
}
_ => return None,
};
token_trees.push(child);
token_trees.push(child.into());
}
}
NodeOrToken::Node(node) => {
@ -275,11 +298,26 @@ impl Convertor {
self.map.insert(token_id, relative_range);
token_id
}
fn alloc_delim(
&mut self,
open_abs_range: TextRange,
close_abs_range: TextRange,
) -> tt::TokenId {
let open_relative_range = open_abs_range - self.global_offset;
let close_relative_range = close_abs_range - self.global_offset;
let token_id = tt::TokenId(self.next_id);
self.next_id += 1;
self.map.insert_delim(token_id, open_relative_range, close_relative_range);
token_id
}
}
struct TtTreeSink<'a> {
buf: String,
cursor: Cursor<'a>,
open_delims: FxHashMap<tt::TokenId, TextUnit>,
text_pos: TextUnit,
inner: SyntaxTreeBuilder,
token_map: TokenMap,
@ -294,6 +332,7 @@ impl<'a> TtTreeSink<'a> {
TtTreeSink {
buf: String::new(),
cursor,
open_delims: FxHashMap::default(),
text_pos: 0.into(),
inner: SyntaxTreeBuilder::default(),
roots: smallvec::SmallVec::new(),
@ -307,10 +346,10 @@ impl<'a> TtTreeSink<'a> {
}
fn delim_to_str(d: Option<tt::Delimiter>, closing: bool) -> SmolStr {
let texts = match d {
Some(tt::Delimiter::Parenthesis) => "()",
Some(tt::Delimiter::Brace) => "{}",
Some(tt::Delimiter::Bracket) => "[]",
let texts = match d.map(|it| it.kind) {
Some(tt::DelimiterKind::Parenthesis) => "()",
Some(tt::DelimiterKind::Brace) => "{}",
Some(tt::DelimiterKind::Bracket) => "[]",
None => return "".into(),
};
@ -331,34 +370,49 @@ impl<'a> TreeSink for TtTreeSink<'a> {
break;
}
match self.cursor.token_tree() {
let text: Option<SmolStr> = match self.cursor.token_tree() {
Some(tt::TokenTree::Leaf(leaf)) => {
// Mark the range if needed
if let tt::Leaf::Ident(ident) = leaf {
if kind == IDENT {
let range =
TextRange::offset_len(self.text_pos, TextUnit::of_str(&ident.text));
self.token_map.insert(ident.id, range);
}
}
let id = match leaf {
tt::Leaf::Ident(ident) => ident.id,
tt::Leaf::Punct(punct) => punct.id,
tt::Leaf::Literal(lit) => lit.id,
};
let text = SmolStr::new(format!("{}", leaf));
let range = TextRange::offset_len(self.text_pos, TextUnit::of_str(&text));
self.token_map.insert(id, range);
self.cursor = self.cursor.bump();
self.buf += &format!("{}", leaf);
Some(text)
}
Some(tt::TokenTree::Subtree(subtree)) => {
self.cursor = self.cursor.subtree().unwrap();
self.buf += &delim_to_str(subtree.delimiter, false);
if let Some(id) = subtree.delimiter.map(|it| it.id) {
self.open_delims.insert(id, self.text_pos);
}
None => {
if let Some(parent) = self.cursor.end() {
Some(delim_to_str(subtree.delimiter, false))
}
None => self.cursor.end().and_then(|parent| {
self.cursor = self.cursor.bump();
self.buf += &delim_to_str(parent.delimiter, true);
if let Some(id) = parent.delimiter.map(|it| it.id) {
if let Some(open_delim) = self.open_delims.get(&id) {
let open_range =
TextRange::offset_len(*open_delim, TextUnit::from_usize(1));
let close_range =
TextRange::offset_len(self.text_pos, TextUnit::from_usize(1));
self.token_map.insert_delim(id, open_range, close_range);
}
}
Some(delim_to_str(parent.delimiter, true))
}),
};
if let Some(text) = text {
self.buf += &text;
self.text_pos += TextUnit::of_str(&text);
}
}
};
}
self.text_pos += TextUnit::of_str(&self.buf);
let text = SmolStr::new(self.buf.as_str());
self.buf.clear();
self.inner.token(kind, text);
@ -504,7 +558,7 @@ mod tests {
let token_tree = ast::TokenTree::cast(token_tree).unwrap();
let tt = ast_to_token_tree(&token_tree).unwrap().0;
assert_eq!(tt.delimiter, Some(tt::Delimiter::Brace));
assert_eq!(tt.delimiter.map(|it| it.kind), Some(tt::DelimiterKind::Brace));
}
#[test]

14
crates/ra_mbe/src/tests.rs
View file

@ -77,13 +77,15 @@ macro_rules! foobar {
}
assert_eq!(expansion.token_trees.len(), 3);
// ($e:ident) => { foo bar $e }
// 0123 45 6 7 89
assert_eq!(get_id(&expansion.token_trees[0]), Some(6));
assert_eq!(get_id(&expansion.token_trees[1]), Some(7));
// {($e:ident) => { foo bar $e }}
// 012345 67 8 9 T 12
assert_eq!(get_id(&expansion.token_trees[0]), Some(9));
assert_eq!(get_id(&expansion.token_trees[1]), Some(10));
// So baz should be 10
assert_eq!(get_id(&expansion.token_trees[2]), Some(10));
// The input args of macro call include parentheses:
// (baz)
// So baz should be 12+1+1
assert_eq!(get_id(&expansion.token_trees[2]), Some(14));
}
#[test]

16
crates/ra_tt/src/lib.rs
View file

@ -55,7 +55,13 @@ pub struct Subtree {
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum Delimiter {
pub struct Delimiter {
pub id: TokenId,
pub kind: DelimiterKind,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum DelimiterKind {
Parenthesis,
Brace,
Bracket,
@ -97,10 +103,10 @@ impl fmt::Display for TokenTree {
impl fmt::Display for Subtree {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let (l, r) = match self.delimiter {
Some(Delimiter::Parenthesis) => ("(", ")"),
Some(Delimiter::Brace) => ("{", "}"),
Some(Delimiter::Bracket) => ("[", "]"),
let (l, r) = match self.delimiter.map(|it| it.kind) {
Some(DelimiterKind::Parenthesis) => ("(", ")"),
Some(DelimiterKind::Brace) => ("{", "}"),
Some(DelimiterKind::Bracket) => ("[", "]"),
None => ("", ""),
};
f.write_str(l)?;