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Continue generating other symbols if an expr is not supported

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This commit is contained in:
David Tolnay 2023-10-25 13:46:59 -07:00
parent 65f0253334
commit 1078250f48
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1 changed files with 14 additions and 9 deletions
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23
compiler/rustc_macros/src/symbols.rs
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@ -60,6 +60,7 @@ enum Value {
SameAsName,
String(LitStr),
Env(LitStr),
Unsupported(Expr),
}
impl Parse for Symbol {
@ -88,13 +89,7 @@ impl Parse for Value {
}
_ => {}
}
Err(syn::Error::new_spanned(
expr,
concat!(
"unsupported expression for symbol value; implement support for this in ",
file!(),
),
))
Ok(Value::Unsupported(expr))
}
}
@ -223,7 +218,17 @@ fn symbols_with_errors(input: TokenStream) -> (TokenStream, Vec<syn::Error>) {
let value = match &symbol.value {
Value::SameAsName => name.to_string(),
Value::String(lit) => lit.value(),
Value::Env(_) => continue,
Value::Env(_) => continue, // in another loop below
Value::Unsupported(expr) => {
errors.list.push(syn::Error::new_spanned(
expr,
concat!(
"unsupported expression for symbol value; implement support for this in ",
file!(),
),
));
continue;
}
};
let idx = entries.insert(symbol.name.span(), &value, &mut errors);
@ -249,7 +254,7 @@ fn symbols_with_errors(input: TokenStream) -> (TokenStream, Vec<syn::Error>) {
for symbol in &input.symbols {
let env_var = match &symbol.value {
Value::Env(lit) => lit,
_ => continue,
Value::SameAsName | Value::String(_) | Value::Unsupported(_) => continue,
};
let value = match proc_macro::tracked_env::var(env_var.value()) {