bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir_expand/src/db.rs')
-rw-r--r--crates/hir_expand/src/db.rs40
1 files changed, 27 insertions, 13 deletions
diff --git a/crates/hir_expand/src/db.rs b/crates/hir_expand/src/db.rs
index 7d82b33db8..91c1631e81 100644
--- a/crates/hir_expand/src/db.rs
+++ b/crates/hir_expand/src/db.rs
@@ -5,7 +5,7 @@ use std::sync::Arc;
use base_db::{salsa, SourceDatabase};
use either::Either;
use limit::Limit;
-use mbe::{syntax_node_to_token_tree, ExpandError, ExpandResult};
+use mbe::syntax_node_to_token_tree;
use rustc_hash::FxHashSet;
use syntax::{
algo::diff,
@@ -15,8 +15,9 @@ use syntax::{
use crate::{
ast_id_map::AstIdMap, fixup, hygiene::HygieneFrame, BuiltinAttrExpander, BuiltinDeriveExpander,
- BuiltinFnLikeExpander, ExpandTo, HirFileId, HirFileIdRepr, MacroCallId, MacroCallKind,
- MacroCallLoc, MacroDefId, MacroDefKind, MacroFile, ProcMacroExpander,
+ BuiltinFnLikeExpander, ExpandError, ExpandResult, ExpandTo, HirFileId, HirFileIdRepr,
+ MacroCallId, MacroCallKind, MacroCallLoc, MacroDefId, MacroDefKind, MacroFile,
+ ProcMacroExpander,
};
/// Total limit on the number of tokens produced by any macro invocation.
@@ -47,10 +48,10 @@ impl TokenExpander {
db: &dyn AstDatabase,
id: MacroCallId,
tt: &tt::Subtree,
- ) -> mbe::ExpandResult<tt::Subtree> {
+ ) -> ExpandResult<tt::Subtree> {
match self {
- TokenExpander::DeclarativeMacro { mac, .. } => mac.expand(tt),
- TokenExpander::Builtin(it) => it.expand(db, id, tt),
+ TokenExpander::DeclarativeMacro { mac, .. } => mac.expand(tt).map_err(Into::into),
+ TokenExpander::Builtin(it) => it.expand(db, id, tt).map_err(Into::into),
TokenExpander::BuiltinAttr(it) => it.expand(db, id, tt),
TokenExpander::BuiltinDerive(it) => it.expand(db, id, tt),
TokenExpander::ProcMacro(_) => {
@@ -432,7 +433,11 @@ fn macro_expand(db: &dyn AstDatabase, id: MacroCallId) -> ExpandResult<Option<Ar
let macro_arg = match db.macro_arg(id) {
Some(it) => it,
- None => return ExpandResult::str_err("Failed to lower macro args to token tree".into()),
+ None => {
+ return ExpandResult::only_err(ExpandError::Other(
+ "Failed to lower macro args to token tree".into(),
+ ))
+ }
};
let expander = match db.macro_def(loc.def) {
@@ -440,16 +445,23 @@ fn macro_expand(db: &dyn AstDatabase, id: MacroCallId) -> ExpandResult<Option<Ar
// FIXME: This is weird -- we effectively report macro *definition*
// errors lazily, when we try to expand the macro. Instead, they should
// be reported at the definition site (when we construct a def map).
- Err(err) => return ExpandResult::str_err(format!("invalid macro definition: {}", err)),
+ Err(err) => {
+ return ExpandResult::only_err(ExpandError::Other(
+ format!("invalid macro definition: {}", err).into(),
+ ))
+ }
};
let ExpandResult { value: mut tt, err } = expander.expand(db, id, &macro_arg.0);
// Set a hard limit for the expanded tt
let count = tt.count();
if TOKEN_LIMIT.check(count).is_err() {
- return ExpandResult::str_err(format!(
- "macro invocation exceeds token limit: produced {} tokens, limit is {}",
- count,
- TOKEN_LIMIT.inner(),
+ return ExpandResult::only_err(ExpandError::Other(
+ format!(
+ "macro invocation exceeds token limit: produced {} tokens, limit is {}",
+ count,
+ TOKEN_LIMIT.inner(),
+ )
+ .into(),
));
}
@@ -466,7 +478,9 @@ fn expand_proc_macro(db: &dyn AstDatabase, id: MacroCallId) -> ExpandResult<tt::
let loc: MacroCallLoc = db.lookup_intern_macro_call(id);
let macro_arg = match db.macro_arg(id) {
Some(it) => it,
- None => return ExpandResult::str_err("No arguments for proc-macro".to_string()),
+ None => {
+ return ExpandResult::only_err(ExpandError::Other("No arguments for proc-macro".into()))
+ }
};
let expander = match loc.def.kind {