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Return the typekind "FUNC" for a function pointer.

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This commit is contained in:
Christoffer Lerno
2024-06-20 20:47:24 +02:00
parent 316982fb8f
commit 3a7bc4d253
4 changed files with 44 additions and 57 deletions
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61
src/compiler/sema_decls.c
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@@ -1997,7 +1997,7 @@ static inline Decl *sema_find_interface_for_method(SemaContext *context, Canonic
*
* 1. Check return types.
* 2. Check parameter count.
* 3. Check each parameter for matching types (TODO, should there be more checks?)
* 3. Check each parameter for matching types
*
* @return true if it matches, false otherwise.
*/
@@ -2670,10 +2670,7 @@ static bool sema_analyse_attributes_inner(SemaContext *context, Decl *decl, Attr
}
// Walk through all of the attributes.
int count = vec_size(attrs);
for (int i = 0; i < count; i++)
{
Attr *attr = attrs[i];
FOREACH_BEGIN(Attr *attr, attrs)
if (attr->is_custom)
{
if (!sema_analyse_custom_attribute(context, decl, attr, domain, top, erase_decl)) return false;
@@ -2684,7 +2681,7 @@ static bool sema_analyse_attributes_inner(SemaContext *context, Decl *decl, Attr
if (!sema_analyse_attribute(context, decl, attr, domain, erase_decl)) return false;
}
if (*erase_decl) return true;
}
FOREACH_END();
return true;
}
@@ -2772,7 +2769,6 @@ static inline MainType sema_find_main_type(SemaContext *context, Signature *sig,
{
case 0:
return MAIN_TYPE_NO_ARGS;
break;
case 1:
arg_type = type_flatten(params[0]->type);
if (arg_type == type_get_slice(type_string)) return MAIN_TYPE_ARGS;
@@ -3003,8 +2999,7 @@ static inline bool sema_analyse_main_function(SemaContext *context, Decl *decl)
if (is_int_return && type_flatten(rtype) != type_cint)
{
SEMA_ERROR(rtype_info, "Expected a return type of 'void' or %s.", type_quoted_error_string(type_cint));
return false;
RETURN_SEMA_ERROR(rtype_info, "Expected a return type of 'void' or %s.", type_quoted_error_string(type_cint));
}
// At this point the style is either MAIN_INT_VOID, MAIN_VOID_VOID or MAIN_ERR_VOID
MainType type = sema_find_main_type(context, signature, is_winmain);
@@ -3018,8 +3013,7 @@ static inline bool sema_analyse_main_function(SemaContext *context, Decl *decl)
}
if (type == MAIN_TYPE_RAW && !is_int_return)
{
SEMA_ERROR(rtype_info, "Int return is required for C style main.");
return false;
RETURN_SEMA_ERROR(rtype_info, "Int return is required for a C style main.");
}
// Suppress winmain on non-win32
if (platform_target.os != OS_TYPE_WIN32) is_winmain = false;
@@ -3055,10 +3049,7 @@ REGISTER_MAIN:
static inline bool sema_analyse_func_macro(SemaContext *context, Decl *decl, AttributeDomain domain, bool *erase_decl)
{
assert((domain & CALLABLE_TYPE) == domain);
if (!sema_analyse_attributes(context,
decl,
decl->attributes,
domain,
if (!sema_analyse_attributes(context, decl, decl->attributes, domain,
erase_decl)) return decl_poison(decl);
return true;
}
@@ -3084,9 +3075,8 @@ static inline bool sema_analyse_func(SemaContext *context, Decl *decl, bool *era
assert(!is_interface_method);
if (vec_size(sig->params))
{
SEMA_ERROR(sig->params[0], "%s functions may not take any parameters.",
RETURN_SEMA_ERROR(sig->params[0], "%s functions may not take any parameters.",
is_init_finalizer ? "'@init' and '@finalizer'" : "'@test' and '@benchmark'");
return decl_poison(decl);
}
TypeInfo *rtype_info = type_infoptr(sig->rtype);
if (!sema_resolve_type_info(context, rtype_info, RESOLVE_TYPE_DEFAULT)) return false;
@@ -3095,16 +3085,14 @@ static inline bool sema_analyse_func(SemaContext *context, Decl *decl, bool *era
{
if (rtype->canonical != type_void)
{
SEMA_ERROR(rtype_info, "'@init' and '@finalizer' functions may only return 'void'.");
return decl_poison(decl);
RETURN_SEMA_ERROR(rtype_info, "'@init' and '@finalizer' functions may only return 'void'.");
}
}
else
{
if (type_no_optional(rtype) != type_void)
{
SEMA_ERROR(rtype_info, "'@test' and '@benchmark' functions may only return 'void' or 'void!'.");
return decl_poison(decl);
RETURN_SEMA_ERROR(rtype_info, "'@test' and '@benchmark' functions may only return 'void' or 'void!'.");
}
if (type_is_void(rtype))
{
@@ -3122,37 +3110,28 @@ static inline bool sema_analyse_func(SemaContext *context, Decl *decl, bool *era
{
if (type_is_void(rtype))
{
SEMA_ERROR(rtype_info, "@nodiscard cannot be used on functions returning 'void'.");
return decl_poison(decl);
RETURN_SEMA_ERROR(rtype_info, "@nodiscard cannot be used on functions returning 'void'.");
}
}
if (sig->attrs.maydiscard)
if (sig->attrs.maydiscard && !type_is_optional(rtype))
{
if (!type_is_optional(rtype))
{
SEMA_ERROR(rtype_info, "@maydiscard can only be used on functions returning optional values.");
return decl_poison(decl);
}
RETURN_SEMA_ERROR(rtype_info, "@maydiscard can only be used on functions returning optional values.");
}
if (decl->func_decl.type_parent)
{
if (!sema_analyse_method(context, decl)) return decl_poison(decl);
if (!sema_analyse_method(context, decl)) return false;
}
else if (!is_interface_method)
{
if (decl->func_decl.attr_dynamic)
{
SEMA_ERROR(decl, "Only methods may implement interfaces.");
return decl_poison(decl);
}
if (decl->func_decl.attr_dynamic) RETURN_SEMA_ERROR(decl, "Only methods may implement interfaces.");
if (decl->name == kw_main)
{
if (is_test || is_benchmark)
{
SEMA_ERROR(decl, "The main function may not be annotated %s.", is_test ? "@test" : "@benchmark");
return decl_poison(decl);
RETURN_SEMA_ERROR(decl, "The main function may not be annotated %s.", is_test ? "@test" : "@benchmark");
}
if (!sema_analyse_main_function(context, decl)) return decl_poison(decl);
if (!sema_analyse_main_function(context, decl)) return false;
}
decl_set_external_name(decl);
}
@@ -3160,12 +3139,12 @@ static inline bool sema_analyse_func(SemaContext *context, Decl *decl, bool *era
// Do we have fn void any.foo(void*) { ... }?
if (!decl->func_decl.body && !decl->is_extern && !decl->unit->is_interface_file && !is_interface_method)
{
SEMA_ERROR(decl, "Expected a function body, if you want to declare an extern function use 'extern' or place it in an .c3i file.");
return false;
RETURN_SEMA_ERROR(decl, "Expected a function body, if you want to declare an extern function use "
"'extern' or place it in an .c3i file.");
}
bool pure = false;
if (!sema_analyse_doc_header(context, decl->func_decl.docs, decl->func_decl.signature.params, NULL,
&pure)) return decl_poison(decl);
&pure)) return false;
decl->func_decl.signature.attrs.is_pure = pure;
if (!sema_set_alloca_alignment(context, decl->type, &decl->alignment)) return false;
DEBUG_LOG("<<< Function analysis of [%s] successful.", decl_safe_name(decl));