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Introduce HygieneFrames for proper token hyginee

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This commit is contained in:
Edwin Cheng 2021-01-02 20:25:05 +08:00
parent 51d29fe554
commit fe5340d970
7 changed files with 184 additions and 54 deletions
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11
crates/hir_expand/src/lib.rs
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@ -340,11 +340,8 @@ impl ExpansionInfo {
Some(self.expanded.with_value(token))
}
pub fn map_token_up(
&self,
token: InFile<&SyntaxToken>,
) -> Option<(InFile<SyntaxToken>, Origin)> {
let token_id = self.exp_map.token_by_range(token.value.text_range())?;
pub fn map_token_up(&self, token: &SyntaxToken) -> Option<(InFile<SyntaxToken>, Origin)> {
let token_id = self.exp_map.token_by_range(token.text_range())?;
let (token_id, origin) = self.macro_def.0.map_id_up(token_id);
let (token_map, tt) = match origin {
@ -359,7 +356,7 @@ impl ExpansionInfo {
),
};
let range = token_map.range_by_token(token_id)?.by_kind(token.value.kind())?;
let range = token_map.range_by_token(token_id)?.by_kind(token.kind())?;
let token = algo::find_covering_element(&tt.value, range + tt.value.text_range().start())
.into_token()?;
Some((tt.with_value(token), origin))
@ -495,7 +492,7 @@ fn ascend_call_token(
expansion: &ExpansionInfo,
token: InFile<SyntaxToken>,
) -> Option<InFile<SyntaxToken>> {
let (mapped, origin) = expansion.map_token_up(token.as_ref())?;
let (mapped, origin) = expansion.map_token_up(&token.value)?;
if origin != Origin::Call {
return None;
}