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Add struct #simple to force a struct to use simple comparison if all of the fields "nearly simply comparable".

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gingerBill
2026-01-29 10:48:05 +00:00
parent 4a7fb46667
commit 07d814d9cf
10 changed files with 67 additions and 9 deletions
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13
src/parser.cpp
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@@ -1230,7 +1230,7 @@ gb_internal Ast *ast_dynamic_array_type(AstFile *f, Token token, Ast *elem) {
}
gb_internal Ast *ast_struct_type(AstFile *f, Token token, Slice<Ast *> fields, isize field_count,
Ast *polymorphic_params, bool is_packed, bool is_raw_union, bool is_all_or_none,
Ast *polymorphic_params, bool is_packed, bool is_raw_union, bool is_all_or_none, bool is_simple,
Ast *align, Ast *min_field_align, Ast *max_field_align,
Token where_token, Array<Ast *> const &where_clauses) {
Ast *result = alloc_ast_node(f, Ast_StructType);
@@ -1241,6 +1241,7 @@ gb_internal Ast *ast_struct_type(AstFile *f, Token token, Slice<Ast *> fields, i
result->StructType.is_packed = is_packed;
result->StructType.is_raw_union = is_raw_union;
result->StructType.is_all_or_none = is_all_or_none;
result->StructType.is_simple = is_simple;
result->StructType.align = align;
result->StructType.min_field_align = min_field_align;
result->StructType.max_field_align = max_field_align;
@@ -2788,6 +2789,7 @@ gb_internal Ast *parse_operand(AstFile *f, bool lhs) {
bool is_packed = false;
bool is_all_or_none = false;
bool is_raw_union = false;
bool is_simple = false;
Ast *align = nullptr;
Ast *min_field_align = nullptr;
Ast *max_field_align = nullptr;
@@ -2869,11 +2871,16 @@ gb_internal Ast *parse_operand(AstFile *f, bool lhs) {
error_line("\tSuggestion: #max_field_align(%s)", s);
gb_string_free(s);
}
}else if (tag.string == "raw_union") {
} else if (tag.string == "raw_union") {
if (is_raw_union) {
syntax_error(tag, "Duplicate struct tag '#%.*s'", LIT(tag.string));
}
is_raw_union = true;
} else if (tag.string == "simple") {
if (is_simple) {
syntax_error(tag, "Duplicate struct tag '#%.*s'", LIT(tag.string));
}
is_simple = true;
} else {
syntax_error(tag, "Invalid struct tag '#%.*s'", LIT(tag.string));
}
@@ -2919,7 +2926,7 @@ gb_internal Ast *parse_operand(AstFile *f, bool lhs) {
parser_check_polymorphic_record_parameters(f, polymorphic_params);
return ast_struct_type(f, token, decls, name_count,
polymorphic_params, is_packed, is_raw_union, is_all_or_none,
polymorphic_params, is_packed, is_raw_union, is_all_or_none, is_simple,
align, min_field_align, max_field_align,
where_token, where_clauses);
} break;