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Simplify eager macro error handling

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This commit is contained in:
Lukas Wirth 2023-04-16 15:46:12 +02:00
parent a5558cdfe5
commit 6ae8d49e15
6 changed files with 118 additions and 209 deletions
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42
crates/hir-def/src/lib.rs
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@ -65,11 +65,11 @@ use hir_expand::{
builtin_attr_macro::BuiltinAttrExpander,
builtin_derive_macro::BuiltinDeriveExpander,
builtin_fn_macro::{BuiltinFnLikeExpander, EagerExpander},
eager::{expand_eager_macro, ErrorEmitted, ErrorSink},
eager::expand_eager_macro,
hygiene::Hygiene,
proc_macro::ProcMacroExpander,
AstId, ExpandError, ExpandTo, HirFileId, InFile, MacroCallId, MacroCallKind, MacroDefId,
MacroDefKind, UnresolvedMacro,
AstId, ExpandError, ExpandResult, ExpandTo, HirFileId, InFile, MacroCallId, MacroCallKind,
MacroDefId, MacroDefKind, UnresolvedMacro,
};
use item_tree::ExternBlock;
use la_arena::Idx;
@ -795,7 +795,7 @@ pub trait AsMacroCall {
krate: CrateId,
resolver: impl Fn(path::ModPath) -> Option<MacroDefId>,
) -> Option<MacroCallId> {
self.as_call_id_with_errors(db, krate, resolver, &mut |_| ()).ok()?.ok()
self.as_call_id_with_errors(db, krate, resolver).ok()?.value
}
fn as_call_id_with_errors(
@ -803,8 +803,7 @@ pub trait AsMacroCall {
db: &dyn db::DefDatabase,
krate: CrateId,
resolver: impl Fn(path::ModPath) -> Option<MacroDefId>,
error_sink: &mut dyn FnMut(ExpandError),
) -> Result<Result<MacroCallId, ErrorEmitted>, UnresolvedMacro>;
) -> Result<ExpandResult<Option<MacroCallId>>, UnresolvedMacro>;
}
impl AsMacroCall for InFile<&ast::MacroCall> {
@ -813,21 +812,15 @@ impl AsMacroCall for InFile<&ast::MacroCall> {
db: &dyn db::DefDatabase,
krate: CrateId,
resolver: impl Fn(path::ModPath) -> Option<MacroDefId>,
mut error_sink: &mut dyn FnMut(ExpandError),
) -> Result<Result<MacroCallId, ErrorEmitted>, UnresolvedMacro> {
) -> Result<ExpandResult<Option<MacroCallId>>, UnresolvedMacro> {
let expands_to = hir_expand::ExpandTo::from_call_site(self.value);
let ast_id = AstId::new(self.file_id, db.ast_id_map(self.file_id).ast_id(self.value));
let h = Hygiene::new(db.upcast(), self.file_id);
let path =
self.value.path().and_then(|path| path::ModPath::from_src(db.upcast(), path, &h));
let path = match error_sink
.option(path, || ExpandError::Other("malformed macro invocation".into()))
{
Ok(path) => path,
Err(error) => {
return Ok(Err(error));
}
let Some(path) = path else {
return Ok(ExpandResult::only_err(ExpandError::Other("malformed macro invocation".into())));
};
macro_call_as_call_id(
@ -836,7 +829,6 @@ impl AsMacroCall for InFile<&ast::MacroCall> {
expands_to,
krate,
resolver,
error_sink,
)
}
}
@ -860,21 +852,23 @@ fn macro_call_as_call_id(
expand_to: ExpandTo,
krate: CrateId,
resolver: impl Fn(path::ModPath) -> Option<MacroDefId>,
error_sink: &mut dyn FnMut(ExpandError),
) -> Result<Result<MacroCallId, ErrorEmitted>, UnresolvedMacro> {
) -> Result<ExpandResult<Option<MacroCallId>>, UnresolvedMacro> {
let def =
resolver(call.path.clone()).ok_or_else(|| UnresolvedMacro { path: call.path.clone() })?;
let res = if let MacroDefKind::BuiltInEager(..) = def.kind {
let macro_call = InFile::new(call.ast_id.file_id, call.ast_id.to_node(db.upcast()));
expand_eager_macro(db.upcast(), krate, macro_call, def, &resolver, error_sink)?
expand_eager_macro(db.upcast(), krate, macro_call, def, &resolver)?
} else {
Ok(def.as_lazy_macro(
db.upcast(),
krate,
MacroCallKind::FnLike { ast_id: call.ast_id, expand_to },
))
ExpandResult {
value: Some(def.as_lazy_macro(
db.upcast(),
krate,
MacroCallKind::FnLike { ast_id: call.ast_id, expand_to },
)),
err: None,
}
};
Ok(res)
}