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verbose assertions in SourceFileItems

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This commit is contained in:
Aleksey Kladov 2018-12-09 14:21:54 +03:00
parent 19f6cdcc03
commit 5004cb928b
1 changed files with 15 additions and 6 deletions
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21
crates/ra_hir/src/lib.rs
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@ -139,12 +139,21 @@ impl SourceFileItems {
self.id_of_unchecked(item) self.id_of_unchecked(item)
} }
fn id_of_unchecked(&self, item: SyntaxNodeRef) -> SourceFileItemId { fn id_of_unchecked(&self, item: SyntaxNodeRef) -> SourceFileItemId {
let (id, _item) = self if let Some((id, _)) = self.arena.iter().find(|(_id, i)| i.borrowed() == item) {
.arena return id;
.iter() }
.find(|(_id, i)| i.borrowed() == item) // This should not happen. Let's try to give a sensible diagnostics.
.unwrap(); if let Some((_, i)) = self.arena.iter().find(|(_id, i)| i.range() == item.range()) {
id panic!(
"unequal syntax nodes with the same range:\n{:?}\n{:?}",
item, i
)
}
panic!(
"Can't find {:?} in SourceFileItems:\n{:?}",
item,
self.arena.iter().map(|(_id, i)| i).collect::<Vec<_>>(),
);
} }
pub fn id_of_source_file(&self) -> SourceFileItemId { pub fn id_of_source_file(&self) -> SourceFileItemId {
let (id, _syntax) = self.arena.iter().next().unwrap(); let (id, _syntax) = self.arena.iter().next().unwrap();