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allow expanding expressions

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This commit is contained in:
Aleksey Kladov 2019-05-14 01:52:31 +03:00
parent 16c7405262
commit caa8663c08
2 changed files with 8 additions and 7 deletions
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11
crates/ra_hir/src/expr.rs
View file

@ -830,14 +830,11 @@ where
if let Some(def) = self.resolver.resolve_macro_call(path) {
let call_id = MacroCallLoc { def, ast_id }.id(self.db);
if let Some(tt) = self.db.macro_expand(call_id).ok() {
if let Some(expr) = mbe::token_tree_to_expr(&tt).ok() {
let file_id = call_id.as_file(MacroFileKind::Expr);
if let Some(node) = self.db.parse_or_expand(file_id) {
if let Some(expr) = ast::Expr::cast(&*node) {
log::debug!("macro expansion {}", expr.syntax().debug_dump());
let old_file_id = std::mem::replace(
&mut self.current_file_id,
//BUG
call_id.as_file(MacroFileKind::Items),
);
let old_file_id = std::mem::replace(&mut self.current_file_id, file_id);
let id = self.collect_expr(&expr);
self.current_file_id = old_file_id;
return id;

4
crates/ra_hir/src/ids.rs
View file

@ -81,6 +81,9 @@ impl HirFileId {
MacroFileKind::Items => {
Some(mbe::token_tree_to_ast_item_list(&tt).syntax().to_owned())
}
MacroFileKind::Expr => {
mbe::token_tree_to_expr(&tt).ok().map(|it| it.syntax().to_owned())
}
}
}
}
@ -102,6 +105,7 @@ struct MacroFile {
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub(crate) enum MacroFileKind {
Items,
Expr,
}
impl From<FileId> for HirFileId {