/* just a pointer to the function */
return get_mode_size_bytes(mode_P_code);
case TYPE_POINTER:
+ case TYPE_REFERENCE:
return get_mode_size_bytes(mode_P_data);
case TYPE_ARRAY:
return get_array_type_size(&type->array);
return ir_type;
}
+static ir_type *create_reference_type(reference_type_t *type)
+{
+ type_t *refers_to = type->refers_to;
+ ir_type *ir_refers_to = get_ir_type_incomplete(refers_to);
+ ir_type *ir_type = new_type_pointer(id_unique("reference.%u"),
+ ir_refers_to, mode_P_data);
+
+ return ir_type;
+}
+
static ir_type *create_array_type(array_type_t *type)
{
type_t *element_type = type->element_type;
case TYPE_POINTER:
firm_type = create_pointer_type(&type->pointer);
break;
+ case TYPE_REFERENCE:
+ firm_type = create_reference_type(&type->reference);
+ break;
case TYPE_ARRAY:
firm_type = create_array_type(&type->array);
break;
static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr)
{
- const type_t *const type = skip_typeref(expr->type_expression->base.type);
+ type_t *type = expr->type_expression->base.type;
+ /* FIXME gcc returns different values depending on whether compiling C or C++
+ * e.g. int x[10] is pointer_type_class in C, but array_type_class in C++ */
gcc_type_class tc;
- switch (type->kind)
- {
- case TYPE_ATOMIC: {
- const atomic_type_t *const atomic_type = &type->atomic;
- switch (atomic_type->akind) {
- /* should not be reached */
- case ATOMIC_TYPE_INVALID:
- tc = no_type_class;
- goto make_const;
-
- /* gcc cannot do that */
- case ATOMIC_TYPE_VOID:
- tc = void_type_class;
- goto make_const;
-
- case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
- case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
- case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
- case ATOMIC_TYPE_SHORT:
- case ATOMIC_TYPE_USHORT:
- case ATOMIC_TYPE_INT:
- case ATOMIC_TYPE_UINT:
- case ATOMIC_TYPE_LONG:
- case ATOMIC_TYPE_ULONG:
- case ATOMIC_TYPE_LONGLONG:
- case ATOMIC_TYPE_ULONGLONG:
- case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
- tc = integer_type_class;
- goto make_const;
-
- case ATOMIC_TYPE_FLOAT:
- case ATOMIC_TYPE_DOUBLE:
- case ATOMIC_TYPE_LONG_DOUBLE:
- tc = real_type_class;
- goto make_const;
+ for (;;) {
+ type = skip_typeref(type);
+ switch (type->kind) {
+ case TYPE_ATOMIC: {
+ const atomic_type_t *const atomic_type = &type->atomic;
+ switch (atomic_type->akind) {
+ /* should not be reached */
+ case ATOMIC_TYPE_INVALID:
+ tc = no_type_class;
+ goto make_const;
+
+ /* gcc cannot do that */
+ case ATOMIC_TYPE_VOID:
+ tc = void_type_class;
+ goto make_const;
+
+ case ATOMIC_TYPE_CHAR: /* gcc handles this as integer */
+ case ATOMIC_TYPE_SCHAR: /* gcc handles this as integer */
+ case ATOMIC_TYPE_UCHAR: /* gcc handles this as integer */
+ case ATOMIC_TYPE_SHORT:
+ case ATOMIC_TYPE_USHORT:
+ case ATOMIC_TYPE_INT:
+ case ATOMIC_TYPE_UINT:
+ case ATOMIC_TYPE_LONG:
+ case ATOMIC_TYPE_ULONG:
+ case ATOMIC_TYPE_LONGLONG:
+ case ATOMIC_TYPE_ULONGLONG:
+ case ATOMIC_TYPE_BOOL: /* gcc handles this as integer */
+ tc = integer_type_class;
+ goto make_const;
+
+ case ATOMIC_TYPE_FLOAT:
+ case ATOMIC_TYPE_DOUBLE:
+ case ATOMIC_TYPE_LONG_DOUBLE:
+ tc = real_type_class;
+ goto make_const;
+ }
+ panic("Unexpected atomic type in classify_type_to_firm().");
}
- panic("Unexpected atomic type in classify_type_to_firm().");
- }
- case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
- case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
- case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
- case TYPE_ARRAY: /* gcc handles this as pointer */
- case TYPE_FUNCTION: /* gcc handles this as pointer */
- case TYPE_POINTER: tc = pointer_type_class; goto make_const;
- case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
- case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
-
- /* gcc handles this as integer */
- case TYPE_ENUM: tc = integer_type_class; goto make_const;
-
- case TYPE_BUILTIN:
- /* typedef/typeof should be skipped already */
- case TYPE_TYPEDEF:
- case TYPE_TYPEOF:
- case TYPE_INVALID:
- case TYPE_ERROR:
- break;
+ case TYPE_COMPLEX: tc = complex_type_class; goto make_const;
+ case TYPE_IMAGINARY: tc = complex_type_class; goto make_const;
+ case TYPE_BITFIELD: tc = integer_type_class; goto make_const;
+ case TYPE_ARRAY: /* gcc handles this as pointer */
+ case TYPE_FUNCTION: /* gcc handles this as pointer */
+ case TYPE_POINTER: tc = pointer_type_class; goto make_const;
+ case TYPE_COMPOUND_STRUCT: tc = record_type_class; goto make_const;
+ case TYPE_COMPOUND_UNION: tc = union_type_class; goto make_const;
+
+ /* gcc handles this as integer */
+ case TYPE_ENUM: tc = integer_type_class; goto make_const;
+
+ /* gcc classifies the referenced type */
+ case TYPE_REFERENCE: type = type->reference.refers_to; continue;
+
+ case TYPE_BUILTIN:
+ /* typedef/typeof should be skipped already */
+ case TYPE_TYPEDEF:
+ case TYPE_TYPEOF:
+ case TYPE_INVALID:
+ case TYPE_ERROR:
+ break;
+ }
+ panic("unexpected TYPE classify_type_to_firm().");
}
- panic("unexpected TYPE classify_type_to_firm().");
-make_const: ;
+make_const:;
dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
ir_mode *const mode = mode_int;
tarval *const tv = new_tarval_from_long(tc, mode);
mangle_type(type->points_to);
}
+static void mangle_reference_type(const reference_type_t *type)
+{
+ obstack_1grow(&obst, 'R');
+ mangle_type(type->refers_to);
+}
+
static void mangle_parameters(const function_type_t *type)
{
if (type->unspecified_parameters)
case TYPE_POINTER:
mangle_pointer_type(&type->pointer);
return;
+ case TYPE_REFERENCE:
+ mangle_reference_type(&type->reference);
+ return;
case TYPE_FUNCTION:
mangle_function_type(&type->function);
return;
case T_inline:
case T__forceinline: /* ^ DECLARATION_START except for __attribute__ */
case T_IDENTIFIER:
+ case '&':
case '*':
errorf(HERE, "discarding stray %K in declaration specifier", &token);
next_token();
switch (la1_type) {
DECLARATION_START
case T_IDENTIFIER:
+ case '&':
case '*': {
errorf(HERE, "%K does not name a type", &token);
next_token();
saw_error = true;
- if (la1_type == '*')
+ if (la1_type == '&' || la1_type == '*')
goto finish_specifiers;
continue;
}
typedef enum construct_type_kind_t {
CONSTRUCT_INVALID,
CONSTRUCT_POINTER,
+ CONSTRUCT_REFERENCE,
CONSTRUCT_FUNCTION,
CONSTRUCT_ARRAY
} construct_type_kind_t;
type_qualifiers_t type_qualifiers;
};
+typedef struct parsed_reference_t parsed_reference_t;
+struct parsed_reference_t {
+ construct_type_t construct_type;
+};
+
typedef struct construct_function_type_t construct_function_type_t;
struct construct_function_type_t {
construct_type_t construct_type;
return (construct_type_t*) pointer;
}
+static construct_type_t *parse_reference_declarator(void)
+{
+ eat('&');
+
+ parsed_reference_t *reference = obstack_alloc(&temp_obst, sizeof(reference[0]));
+ memset(reference, 0, sizeof(reference[0]));
+ reference->construct_type.kind = CONSTRUCT_REFERENCE;
+
+ return (construct_type_t*)reference;
+}
+
static construct_type_t *parse_array_declarator(void)
{
eat('[');
decl_modifiers_t modifiers = parse_attributes(&attributes);
- /* pointers */
- while (token.type == '*') {
- construct_type_t *type = parse_pointer_declarator();
+ for (;;) {
+ construct_type_t *type;
+ switch (token.type) {
+ case '&':
+ if (!(c_mode & _CXX))
+ errorf(HERE, "references are only available for C++");
+ type = parse_reference_declarator();
+ break;
+
+ case '*':
+ type = parse_pointer_declarator();
+ break;
+
+ default:
+ goto ptr_operator_end;
+ }
if (last == NULL) {
first = type;
/* TODO: find out if this is correct */
modifiers |= parse_attributes(&attributes);
}
+ptr_operator_end:
if (env != NULL) {
modifiers |= env->modifiers;
}
case CONSTRUCT_POINTER: {
+ if (is_type_reference(skip_typeref(type)))
+ errorf(HERE, "cannot declare a pointer to reference");
+
parsed_pointer_t *parsed_pointer = (parsed_pointer_t*) iter;
type = make_based_pointer_type(type, parsed_pointer->type_qualifiers, variable);
continue;
}
+ case CONSTRUCT_REFERENCE:
+ if (is_type_reference(skip_typeref(type)))
+ errorf(HERE, "cannot declare a reference to reference");
+
+ type = make_reference_type(type);
+ continue;
+
case CONSTRUCT_ARRAY: {
+ if (is_type_reference(skip_typeref(type)))
+ errorf(HERE, "cannot declare an array of references");
+
parsed_array_t *parsed_array = (parsed_array_t*) iter;
type_t *array_type = allocate_type_zero(TYPE_ARRAY);
* declaration types, so we guess a bit here to improve robustness
* for incorrect programs */
switch (la1_type) {
+ case '&':
case '*':
if (get_entity(token.v.symbol, NAMESPACE_NORMAL) != NULL)
goto expression_statment;
fputc(' ', out);
}
+/**
+ * Prints the prefix part of a reference type.
+ *
+ * @param type The reference type.
+ */
+static void print_reference_type_pre(const reference_type_t *type)
+{
+ intern_print_type_pre(type->refers_to, false);
+ fputc('&', out);
+}
+
/**
* Prints the postfix part of a pointer type.
*
intern_print_type_post(type->points_to, false);
}
+/**
+ * Prints the postfix part of a reference type.
+ *
+ * @param type The reference type.
+ */
+static void print_reference_type_post(const reference_type_t *type)
+{
+ intern_print_type_post(type->refers_to, false);
+}
+
/**
* Prints the prefix part of an array type.
*
case TYPE_POINTER:
print_pointer_type_pre(&type->pointer);
return;
+ case TYPE_REFERENCE:
+ print_reference_type_pre(&type->reference);
+ return;
case TYPE_BITFIELD:
intern_print_type_pre(type->bitfield.base_type, top);
return;
case TYPE_POINTER:
print_pointer_type_post(&type->pointer);
return;
+ case TYPE_REFERENCE:
+ print_reference_type_post(&type->reference);
+ return;
case TYPE_ARRAY:
print_array_type_post(&type->array);
return;
case TYPE_ENUM: return sizeof(enum_type_t);
case TYPE_FUNCTION: return sizeof(function_type_t);
case TYPE_POINTER: return sizeof(pointer_type_t);
+ case TYPE_REFERENCE: return sizeof(reference_type_t);
case TYPE_ARRAY: return sizeof(array_type_t);
case TYPE_BUILTIN: return sizeof(builtin_type_t);
case TYPE_TYPEDEF: return sizeof(typedef_type_t);
case TYPE_BITFIELD:
case TYPE_FUNCTION:
case TYPE_POINTER:
+ case TYPE_REFERENCE:
case TYPE_BUILTIN:
case TYPE_ERROR:
return false;
return types_compatible(to1, to2);
}
+ case TYPE_REFERENCE: {
+ const type_t *const to1 = skip_typeref(type1->reference.refers_to);
+ const type_t *const to2 = skip_typeref(type2->reference.refers_to);
+ return types_compatible(to1, to2);
+ }
+
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION:
case TYPE_ENUM:
return identify_new_type(type);
}
+/**
+ * Creates a new reference type.
+ *
+ * @param refers_to The referred-to type for the new type.
+ */
+type_t *make_reference_type(type_t *refers_to)
+{
+ type_t *type = obstack_alloc(type_obst, sizeof(reference_type_t));
+ memset(type, 0, sizeof(reference_type_t));
+
+ type->kind = TYPE_REFERENCE;
+ type->base.qualifiers = 0;
+ type->base.alignment = 0;
+ type->reference.refers_to = refers_to;
+
+ return identify_new_type(type);
+}
+
/**
* Creates a new based pointer type.
*
typedef struct complex_type_t complex_type_t;
typedef struct imaginary_type_t imaginary_type_t;
typedef struct pointer_type_t pointer_type_t;
+typedef struct reference_type_t reference_type_t;
typedef struct function_parameter_t function_parameter_t;
typedef struct function_type_t function_type_t;
typedef struct compound_type_t compound_type_t;
return hash_ptr(type->points_to);
}
+static unsigned hash_reference_type(const reference_type_t *type)
+{
+ return hash_ptr(type->refers_to);
+}
+
static unsigned hash_array_type(const array_type_t *type)
{
return hash_ptr(type->element_type);
case TYPE_POINTER:
hash = hash_pointer_type(&type->pointer);
break;
+ case TYPE_REFERENCE:
+ hash = hash_reference_type(&type->reference);
+ break;
case TYPE_ARRAY:
hash = hash_array_type(&type->array);
break;
type1->base_variable == type2->base_variable;
}
+static bool reference_types_equal(const reference_type_t *type1,
+ const reference_type_t *type2)
+{
+ return type1->refers_to == type2->refers_to;
+}
+
static bool array_types_equal(const array_type_t *type1,
const array_type_t *type2)
{
return function_types_equal(&type1->function, &type2->function);
case TYPE_POINTER:
return pointer_types_equal(&type1->pointer, &type2->pointer);
+ case TYPE_REFERENCE:
+ return reference_types_equal(&type1->reference, &type2->reference);
case TYPE_ARRAY:
return array_types_equal(&type1->array, &type2->array);
case TYPE_BUILTIN:
TYPE_ENUM,
TYPE_FUNCTION,
TYPE_POINTER,
+ TYPE_REFERENCE,
TYPE_ARRAY,
TYPE_BITFIELD,
TYPE_BUILTIN,
variable_t *base_variable; /**< Microsoft __based() extension */
};
+struct reference_type_t {
+ type_base_t base;
+ type_t *refers_to;
+};
+
struct array_type_t {
type_base_t base;
type_t *element_type;
imaginary_type_t imaginary;
builtin_type_t builtin;
pointer_type_t pointer;
+ reference_type_t reference;
array_type_t array;
function_type_t function;
compound_type_t compound;
type_t *make_complex_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
type_t *make_imaginary_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers);
+type_t *make_reference_type(type_t *refers_to);
type_t *make_based_pointer_type(type_t *points_to,
type_qualifiers_t qualifiers, variable_t *variable);
type_t *make_array_type(type_t *element_type, size_t size,
return type->kind == TYPE_POINTER;
}
+static inline bool is_type_reference(const type_t *type)
+{
+ assert(!is_typeref(type));
+ return type->kind == TYPE_REFERENCE;
+}
+
static inline bool is_type_array(const type_t *type)
{
assert(!is_typeref(type));
projects / cparser / commitdiff