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Add infinite recursion error

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This commit is contained in:
Yann Hamdaoui 2021-01-25 16:49:01 +01:00
parent 007a040628
commit 61348e8448
1 changed files with 12 additions and 0 deletions
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12
src/error.rs
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@ -68,6 +68,8 @@ pub enum EvalError {
),
/// An unbound identifier was referenced.
UnboundIdentifier(Ident, Option<RawSpan>),
/// A thunk was entered during its own update.
InfiniteRecursion(CallStack, Option<RawSpan>),
/// An unexpected internal error.
InternalError(String, Option<RawSpan>),
/// Errors occurring rarely enough to not deserve a dedicated variant.
@ -979,6 +981,16 @@ impl ToDiagnostic<FileId> for EvalError {
.with_message("Unbound identifier")
.with_labels(vec![primary_alt(span_opt, ident.clone(), files)
.with_message("this identifier is unbound")])],
EvalError::InfiniteRecursion(_call_stack, span_opt) => {
let labels = span_opt
.as_ref()
.map(|span| vec![primary(span).with_message("recursive reference")])
.unwrap_or_else(Vec::new);
vec![Diagnostic::error()
.with_message("infinite recursion")
.with_labels(labels)]
}
EvalError::Other(msg, span_opt) => {
let labels = span_opt
.as_ref()