Add -vet-explicit-allocators

This vet flag will make it so that allocators must be explicitly used
in places where context.allocator and context.temp_allocator are a
procedure parameter.

The goal of this flag is to prevent using the context.allocator in
cases where a different allocator was meant to be used.
Some code bases default context.allocator to nil/panic allocator
to catch this at runtime. This effectively makes it a compile
time error instead.
This commit is contained in:
Lucas Perlind
2025-04-27 22:47:03 +10:00
parent c7f9d2b1b7
commit 65b4c793f0
4 changed files with 54 additions and 17 deletions
+30 -7
View File
@@ -6253,20 +6253,43 @@ gb_internal CallArgumentError check_call_arguments_internal(CheckerContext *c, A
for (isize i = 0; i < pt->param_count; i++) {
if (!visited[i]) {
Entity *e = pt->params->Tuple.variables[i];
bool context_allocator_error = false;
if (e->kind == Entity_Variable) {
if (e->Variable.param_value.kind != ParameterValue_Invalid) {
ordered_operands[i].mode = Addressing_Value;
ordered_operands[i].type = e->type;
ordered_operands[i].expr = e->Variable.param_value.original_ast_expr;
if (ast_file_vet_explicit_allocators(c->file)) {
// NOTE(lucas): check if we are trying to default to context.allocator or context.temp_allocator
if (e->Variable.param_value.original_ast_expr->kind == Ast_SelectorExpr) {
auto& expr = e->Variable.param_value.original_ast_expr->SelectorExpr.expr;
auto& selector = e->Variable.param_value.original_ast_expr->SelectorExpr.selector;
if (expr->kind == Ast_Implicit &&
expr->Implicit.string == STR_LIT("context") &&
selector->kind == Ast_Ident &&
(selector->Ident.token.string == STR_LIT("allocator") ||
selector->Ident.token.string == STR_LIT("temp_allocator"))) {
context_allocator_error = true;
}
}
}
dummy_argument_count += 1;
score += assign_score_function(1);
continue;
if (!context_allocator_error) {
ordered_operands[i].mode = Addressing_Value;
ordered_operands[i].type = e->type;
ordered_operands[i].expr = e->Variable.param_value.original_ast_expr;
dummy_argument_count += 1;
score += assign_score_function(1);
continue;
}
}
}
if (show_error) {
if (e->kind == Entity_TypeName) {
if (context_allocator_error) {
gbString str = type_to_string(e->type);
error(call, "Parameter '%.*s' of type '%s' must be explicitly provided in procedure call",
LIT(e->token.string), str);
gb_string_free(str);
} else if (e->kind == Entity_TypeName) {
error(call, "Type parameter '%.*s' is missing in procedure call",
LIT(e->token.string));
} else if (e->kind == Entity_Constant && e->Constant.value.kind != ExactValue_Invalid) {