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Error instead of infinite loop when parsing enum without a derive attribute in derive_parser! (#391)

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Violet 2025-06-23 16:18:21 -07:00 • committed by GitHub
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1 changed files with 15 additions and 6 deletions
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21
ptx_parser_macros_impl/src/parser.rs
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@ -22,14 +22,23 @@ impl Parse for ParseDefinitions {
fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> { fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
let token_type = input.parse::<ItemEnum>()?; let token_type = input.parse::<ItemEnum>()?;
let mut additional_enums = FxHashMap::default(); let mut additional_enums = FxHashMap::default();
while input.peek(Token![#]) {
let enum_ = input.parse::<ItemEnum>()?;
additional_enums.insert(enum_.ident.clone(), enum_);
}
let mut definitions = Vec::new(); let mut definitions = Vec::new();
while !input.is_empty() { loop {
definitions.push(input.parse::<OpcodeDefinition>()?); if input.is_empty() {
break;
}
let lookahead = input.lookahead1();
if lookahead.peek(Token![#]) {
let enum_ = input.parse::<ItemEnum>()?;
additional_enums.insert(enum_.ident.clone(), enum_);
} else if lookahead.peek(Ident) {
definitions.push(input.parse::<OpcodeDefinition>()?);
} else {
return Err(lookahead.error());
}
} }
Ok(Self { Ok(Self {
token_type, token_type,
additional_enums, additional_enums,