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Add error message for C programmers which do Foo{.x = 123} rather than Foo{x = 123}

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gingerBill
2024-03-18 14:17:13 +00:00
parent 6cb74b63ec
commit ebd3065aa2
1 changed files with 18 additions and 10 deletions
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28
src/check_expr.cpp
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@@ -8485,18 +8485,26 @@ gb_internal void check_compound_literal_field_values(CheckerContext *c, Slice<As
continue;
}
ast_node(fv, FieldValue, elem);
if (fv->field->kind != Ast_Ident) {
gbString expr_str = expr_to_string(fv->field);
Ast *ident = fv->field;
if (ident->kind == Ast_ImplicitSelectorExpr) {
gbString expr_str = expr_to_string(ident);
error(ident, "Field names do not start with a '.', remove the '.' in structure literal", expr_str);
gb_string_free(expr_str);
ident = ident->ImplicitSelectorExpr.selector;
}
if (ident->kind != Ast_Ident) {
gbString expr_str = expr_to_string(ident);
error(elem, "Invalid field name '%s' in structure literal", expr_str);
gb_string_free(expr_str);
continue;
}
String name = fv->field->Ident.token.string;
String name = ident->Ident.token.string;
Selection sel = lookup_field(type, name, o->mode == Addressing_Type);
bool is_unknown = sel.entity == nullptr;
if (is_unknown) {
error(fv->field, "Unknown field '%.*s' in structure literal", LIT(name));
error(ident, "Unknown field '%.*s' in structure literal", LIT(name));
continue;
}
@@ -8510,24 +8518,24 @@ gb_internal void check_compound_literal_field_values(CheckerContext *c, Slice<As
}
add_entity_use(c, fv->field, field);
add_entity_use(c, ident, field);
if (string_set_update(&fields_visited, name)) {
if (sel.index.count > 1) {
if (String *found = string_map_get(&fields_visited_through_raw_union, sel.entity->token.string)) {
error(fv->field, "Field '%.*s' is already initialized due to a previously assigned struct #raw_union field '%.*s'", LIT(sel.entity->token.string), LIT(*found));
error(ident, "Field '%.*s' is already initialized due to a previously assigned struct #raw_union field '%.*s'", LIT(sel.entity->token.string), LIT(*found));
} else {
error(fv->field, "Duplicate or reused field '%.*s' in %.*s", LIT(sel.entity->token.string), LIT(assignment_str));
error(ident, "Duplicate or reused field '%.*s' in %.*s", LIT(sel.entity->token.string), LIT(assignment_str));
}
} else {
error(fv->field, "Duplicate field '%.*s' in %.*s", LIT(field->token.string), LIT(assignment_str));
error(ident, "Duplicate field '%.*s' in %.*s", LIT(field->token.string), LIT(assignment_str));
}
continue;
} else if (String *found = string_map_get(&fields_visited_through_raw_union, sel.entity->token.string)) {
error(fv->field, "Field '%.*s' is already initialized due to a previously assigned struct #raw_union field '%.*s'", LIT(sel.entity->token.string), LIT(*found));
error(ident, "Field '%.*s' is already initialized due to a previously assigned struct #raw_union field '%.*s'", LIT(sel.entity->token.string), LIT(*found));
continue;
}
if (sel.indirect) {
error(fv->field, "Cannot assign to the %d-nested anonymous indirect field '%.*s' in a %.*s", cast(int)sel.index.count-1, LIT(name), LIT(assignment_str));
error(ident, "Cannot assign to the %d-nested anonymous indirect field '%.*s' in a %.*s", cast(int)sel.index.count-1, LIT(name), LIT(assignment_str));
continue;
}