static goto_statement_t *goto_last = NULL;
static label_statement_t *label_first = NULL;
static label_statement_t *label_last = NULL;
-static struct obstack temp_obst;
+static struct obstack temp_obst;
/** The current source position. */
#define HERE token.source_position
[EXPR_CHAR_CONST] = sizeof(const_expression_t),
[EXPR_STRING_LITERAL] = sizeof(string_literal_expression_t),
[EXPR_WIDE_STRING_LITERAL] = sizeof(wide_string_literal_expression_t),
+ [EXPR_COMPOUND_LITERAL] = sizeof(compound_literal_expression_t),
[EXPR_CALL] = sizeof(call_expression_t),
[EXPR_UNARY_FIRST] = sizeof(unary_expression_t),
[EXPR_BINARY_FIRST] = sizeof(binary_expression_t),
[INITIALIZER_VALUE] = sizeof(initializer_value_t),
[INITIALIZER_STRING] = sizeof(initializer_string_t),
[INITIALIZER_WIDE_STRING] = sizeof(initializer_wide_string_t),
- [INITIALIZER_LIST] = sizeof(initializer_list_t)
+ [INITIALIZER_LIST] = sizeof(initializer_list_t),
+ [INITIALIZER_DESIGNATOR] = sizeof(initializer_designator_t)
};
assert(kind < sizeof(sizes) / sizeof(*sizes));
assert(sizes[kind] != 0);
}
#define expect(expected) \
+ do { \
if(UNLIKELY(token.type != (expected))) { \
parse_error_expected(NULL, (expected), 0); \
eat_statement(); \
return NULL; \
} \
- next_token();
+ next_token(); \
+ } while(0)
#define expect_block(expected) \
+ do { \
if(UNLIKELY(token.type != (expected))) { \
parse_error_expected(NULL, (expected), 0); \
eat_block(); \
return NULL; \
} \
- next_token();
+ next_token(); \
+ } while(0)
#define expect_void(expected) \
+ do { \
if(UNLIKELY(token.type != (expected))) { \
parse_error_expected(NULL, (expected), 0); \
eat_statement(); \
return; \
} \
- next_token();
+ next_token(); \
+ } while(0)
static void set_scope(scope_t *new_scope)
{
+ if(scope != NULL) {
+ scope->last_declaration = last_declaration;
+ }
scope = new_scope;
- last_declaration = new_scope->declarations;
- if(last_declaration != NULL) {
- while(last_declaration->next != NULL) {
- last_declaration = last_declaration->next;
- }
- }
+ last_declaration = new_scope->last_declaration;
}
/**
*/
static void stack_push(stack_entry_t **stack_ptr, declaration_t *declaration)
{
- symbol_t *symbol = declaration->symbol;
- namespace_t namespc = (namespace_t)declaration->namespc;
-
- /* remember old declaration */
- stack_entry_t entry;
- entry.symbol = symbol;
- entry.old_declaration = symbol->declaration;
- entry.namespc = (unsigned short) namespc;
- ARR_APP1(stack_entry_t, *stack_ptr, entry);
+ symbol_t *symbol = declaration->symbol;
+ namespace_t namespc = (namespace_t) declaration->namespc;
/* replace/add declaration into declaration list of the symbol */
- if(symbol->declaration == NULL) {
+ declaration_t *iter = symbol->declaration;
+ if (iter == NULL) {
symbol->declaration = declaration;
} else {
declaration_t *iter_last = NULL;
- declaration_t *iter = symbol->declaration;
for( ; iter != NULL; iter_last = iter, iter = iter->symbol_next) {
/* replace an entry? */
if(iter->namespc == namespc) {
iter_last->symbol_next = declaration;
}
}
+
+ /* remember old declaration */
+ stack_entry_t entry;
+ entry.symbol = symbol;
+ entry.old_declaration = iter;
+ entry.namespc = (unsigned short) namespc;
+ ARR_APP1(stack_entry_t, *stack_ptr, entry);
}
static void environment_push(declaration_t *declaration)
if(iter->namespc == namespc) {
assert(iter_last != NULL);
iter_last->symbol_next = old_declaration;
- old_declaration->symbol_next = iter->symbol_next;
+ if(old_declaration != NULL) {
+ old_declaration->symbol_next = iter->symbol_next;
+ }
break;
}
}
return orig_type_left;
}
- if (is_type_compound(type_left) && is_type_compound(type_right)) {
+ if ((is_type_compound(type_left) && is_type_compound(type_right))
+ || (is_type_builtin(type_left) && is_type_builtin(type_right))) {
type_t *const unqual_type_left = get_unqualified_type(type_left);
type_t *const unqual_type_right = get_unqualified_type(type_right);
if (types_compatible(unqual_type_left, unqual_type_right)) {
;
}
-#if 0
static designator_t *parse_designation(void)
{
- if(token.type != '[' && token.type != '.')
- return NULL;
-
designator_t *result = NULL;
designator_t *last = NULL;
- while(1) {
+ while(true) {
designator_t *designator;
switch(token.type) {
case '[':
designator = allocate_ast_zero(sizeof(designator[0]));
+ designator->source_position = token.source_position;
next_token();
- designator->array_access = parse_constant_expression();
+ designator->array_index = parse_constant_expression();
expect(']');
break;
case '.':
designator = allocate_ast_zero(sizeof(designator[0]));
+ designator->source_position = token.source_position;
next_token();
if(token.type != T_IDENTIFIER) {
parse_error_expected("while parsing designator",
last = designator;
}
}
-#endif
static initializer_t *initializer_from_string(array_type_t *type,
const string_t *const string)
return initializer;
}
-static initializer_t *initializer_from_expression(type_t *type,
+static initializer_t *initializer_from_expression(type_t *orig_type,
expression_t *expression)
{
/* TODO check that expression is a constant expression */
/* ยง 6.7.8.14/15 char array may be initialized by string literals */
- type_t *const expr_type = expression->base.type;
+ type_t *type = skip_typeref(orig_type);
+ type_t *expr_type_orig = expression->base.type;
+ type_t *expr_type = skip_typeref(expr_type_orig);
if (is_type_array(type) && expr_type->kind == TYPE_POINTER) {
array_type_t *const array_type = &type->array;
type_t *const element_type = skip_typeref(array_type->element_type);
if (element_type->kind == TYPE_ATOMIC) {
+ atomic_type_kind_t akind = element_type->atomic.akind;
switch (expression->kind) {
case EXPR_STRING_LITERAL:
- if (element_type->atomic.akind == ATOMIC_TYPE_CHAR) {
+ if (akind == ATOMIC_TYPE_CHAR
+ || akind == ATOMIC_TYPE_SCHAR
+ || akind == ATOMIC_TYPE_UCHAR) {
return initializer_from_string(array_type,
&expression->string.value);
}
return result;
}
-static initializer_t *parse_sub_initializer(type_t *type,
- expression_t *expression);
-
-static initializer_t *parse_sub_initializer_elem(type_t *type)
+static initializer_t *parse_scalar_initializer(type_t *type)
{
- if(token.type == '{') {
- return parse_sub_initializer(type, NULL);
+ /* there might be extra {} hierarchies */
+ int braces = 0;
+ while(token.type == '{') {
+ next_token();
+ if(braces == 0) {
+ warningf(HERE, "extra curly braces around scalar initializer");
+ }
+ braces++;
}
- expression_t *expression = parse_assignment_expression();
- return parse_sub_initializer(type, expression);
-}
+ expression_t *expression = parse_assignment_expression();
+ initializer_t *initializer = initializer_from_expression(type, expression);
-static bool had_initializer_brace_warning;
+ if(initializer == NULL) {
+ errorf(expression->base.source_position,
+ "expression '%E' doesn't match expected type '%T'",
+ expression, type);
+ /* TODO */
+ return NULL;
+ }
-static void skip_designator(void)
-{
- while(1) {
- if(token.type == '.') {
- next_token();
- if(token.type == T_IDENTIFIER)
- next_token();
- } else if(token.type == '[') {
+ bool additional_warning_displayed = false;
+ while(braces > 0) {
+ if(token.type == ',') {
next_token();
- parse_constant_expression();
- if(token.type == ']')
- next_token();
- } else {
- break;
}
+ if(token.type != '}') {
+ if(!additional_warning_displayed) {
+ warningf(HERE, "additional elements in scalar initializer");
+ additional_warning_displayed = true;
+ }
+ }
+ eat_block();
+ braces--;
}
+
+ return initializer;
}
-static initializer_t *parse_sub_initializer(type_t *type,
- expression_t *expression)
+typedef struct type_path_entry_t type_path_entry_t;
+struct type_path_entry_t {
+ type_t *type;
+ union {
+ size_t index;
+ declaration_t *compound_entry;
+ } v;
+};
+
+typedef struct type_path_t type_path_t;
+struct type_path_t {
+ type_path_entry_t *path;
+ type_t *top_type;
+ bool invalid;
+};
+
+static __attribute__((unused)) void debug_print_type_path(const type_path_t *path)
{
- if(is_type_scalar(type)) {
- /* there might be extra {} hierarchies */
- if(token.type == '{') {
- next_token();
- if(!had_initializer_brace_warning) {
- warningf(HERE, "braces around scalar initializer");
- had_initializer_brace_warning = true;
- }
- initializer_t *result = parse_sub_initializer(type, NULL);
- if(token.type == ',') {
- next_token();
- /* TODO: warn about excessive elements */
- }
- expect_block('}');
- return result;
- }
+ size_t len = ARR_LEN(path->path);
+
+ if(path->invalid) {
+ fprintf(stderr, "invalid path");
+ return;
+ }
- if(expression == NULL) {
- expression = parse_assignment_expression();
+ for(size_t i = 0; i < len; ++i) {
+ const type_path_entry_t *entry = & path->path[i];
+
+ type_t *type = skip_typeref(entry->type);
+ if(is_type_compound(type)) {
+ fprintf(stderr, ".%s", entry->v.compound_entry->symbol->string);
+ } else if(is_type_array(type)) {
+ fprintf(stderr, "[%u]", entry->v.index);
+ } else {
+ fprintf(stderr, "-INVALID-");
}
- return initializer_from_expression(type, expression);
}
+ fprintf(stderr, " (");
+ print_type(path->top_type);
+ fprintf(stderr, ")");
+}
- /* does the expression match the currently looked at object to initialize */
- if(expression != NULL) {
- initializer_t *result = initializer_from_expression(type, expression);
- if(result != NULL)
- return result;
+static type_path_entry_t *get_type_path_top(const type_path_t *path)
+{
+ size_t len = ARR_LEN(path->path);
+ assert(len > 0);
+ return & path->path[len-1];
+}
+
+static type_path_entry_t *append_to_type_path(type_path_t *path)
+{
+ size_t len = ARR_LEN(path->path);
+ ARR_RESIZE(type_path_entry_t, path->path, len+1);
+
+ type_path_entry_t *result = & path->path[len];
+ memset(result, 0, sizeof(result[0]));
+ return result;
+}
+
+static void descend_into_subtype(type_path_t *path)
+{
+ type_t *orig_top_type = path->top_type;
+ type_t *top_type = skip_typeref(orig_top_type);
+
+ assert(is_type_compound(top_type) || is_type_array(top_type));
+
+ type_path_entry_t *top = append_to_type_path(path);
+ top->type = top_type;
+
+ if(is_type_compound(top_type)) {
+ declaration_t *declaration = top_type->compound.declaration;
+ declaration_t *entry = declaration->scope.declarations;
+
+ top->v.compound_entry = entry;
+ path->top_type = entry->type;
+ } else {
+ assert(is_type_array(top_type));
+
+ top->v.index = 0;
+ path->top_type = top_type->array.element_type;
}
+}
- bool read_paren = false;
- if(token.type == '{') {
- next_token();
- read_paren = true;
+static void ascend_from_subtype(type_path_t *path)
+{
+ type_path_entry_t *top = get_type_path_top(path);
+
+ path->top_type = top->type;
+
+ size_t len = ARR_LEN(path->path);
+ ARR_RESIZE(type_path_entry_t, path->path, len-1);
+}
+
+static void ascend_to(type_path_t *path, size_t top_path_level)
+{
+ size_t len = ARR_LEN(path->path);
+ assert(len >= top_path_level);
+
+ while(len > top_path_level) {
+ ascend_from_subtype(path);
+ len = ARR_LEN(path->path);
}
+}
- /* descend into subtype */
- initializer_t *result = NULL;
- initializer_t **elems;
- if(is_type_array(type)) {
- if(token.type == '.') {
- errorf(HERE,
- "compound designator in initializer for array type '%T'",
- type);
- skip_designator();
- }
+static bool walk_designator(type_path_t *path, const designator_t *designator,
+ bool used_in_offsetof)
+{
+ for( ; designator != NULL; designator = designator->next) {
+ type_path_entry_t *top = get_type_path_top(path);
+ type_t *orig_type = top->type;
- type_t *const element_type = skip_typeref(type->array.element_type);
+ type_t *type = skip_typeref(orig_type);
- initializer_t *sub;
- had_initializer_brace_warning = false;
+ if(designator->symbol != NULL) {
+ symbol_t *symbol = designator->symbol;
+ if(!is_type_compound(type)) {
+ if(is_type_valid(type)) {
+ errorf(designator->source_position,
+ "'.%Y' designator used for non-compound type '%T'",
+ symbol, orig_type);
+ }
+ goto failed;
+ }
- if(token.type == '{') {
- sub = parse_sub_initializer(element_type, NULL);
+ declaration_t *declaration = type->compound.declaration;
+ declaration_t *iter = declaration->scope.declarations;
+ for( ; iter != NULL; iter = iter->next) {
+ if(iter->symbol == symbol) {
+ break;
+ }
+ }
+ if(iter == NULL) {
+ errorf(designator->source_position,
+ "'%T' has no member named '%Y'", orig_type, symbol);
+ goto failed;
+ }
+ if(used_in_offsetof) {
+ type_t *real_type = skip_typeref(iter->type);
+ if(real_type->kind == TYPE_BITFIELD) {
+ errorf(designator->source_position,
+ "offsetof designator '%Y' may not specify bitfield",
+ symbol);
+ goto failed;
+ }
+ }
+
+ top->type = orig_type;
+ top->v.compound_entry = iter;
+ orig_type = iter->type;
} else {
- if(expression == NULL) {
- expression = parse_assignment_expression();
-
- /* 6.7.8.14 + 15: we can have an optional {} around the string
- * literal */
- if(read_paren && (expression->kind == EXPR_STRING_LITERAL
- || expression->kind == EXPR_WIDE_STRING_LITERAL)) {
- initializer_t *result
- = initializer_from_expression(type, expression);
- if(result != NULL) {
- expect_block('}');
- return result;
+ expression_t *array_index = designator->array_index;
+ assert(designator->array_index != NULL);
+
+ if(!is_type_array(type)) {
+ if(is_type_valid(type)) {
+ errorf(designator->source_position,
+ "[%E] designator used for non-array type '%T'",
+ array_index, orig_type);
+ }
+ goto failed;
+ }
+ if(!is_type_valid(array_index->base.type)) {
+ goto failed;
+ }
+
+ long index = fold_constant(array_index);
+ if(!used_in_offsetof) {
+ if(index < 0) {
+ errorf(designator->source_position,
+ "array index [%E] must be positive", array_index);
+ goto failed;
+ }
+ if(type->array.size_constant == true) {
+ long array_size = type->array.size;
+ if(index >= array_size) {
+ errorf(designator->source_position,
+ "designator [%E] (%d) exceeds array size %d",
+ array_index, index, array_size);
+ goto failed;
}
}
}
- sub = parse_sub_initializer(element_type, expression);
+ top->type = orig_type;
+ top->v.index = (size_t) index;
+ orig_type = type->array.element_type;
}
+ path->top_type = orig_type;
- /* didn't match the subtypes -> try the parent type */
- if(sub == NULL) {
- assert(!read_paren);
- return NULL;
+ if(designator->next != NULL) {
+ descend_into_subtype(path);
}
+ }
- elems = NEW_ARR_F(initializer_t*, 0);
- ARR_APP1(initializer_t*, elems, sub);
+ path->invalid = false;
+ return true;
- while(true) {
- if(token.type == '}')
- break;
- expect_block(',');
- if(token.type == '}')
- break;
+failed:
+ return false;
+}
- sub = parse_sub_initializer_elem(element_type);
- if(sub == NULL) {
- /* TODO error, do nicer cleanup */
- errorf(HERE, "member initializer didn't match");
- DEL_ARR_F(elems);
- return NULL;
- }
- ARR_APP1(initializer_t*, elems, sub);
+static void advance_current_object(type_path_t *path, size_t top_path_level)
+{
+ if(path->invalid)
+ return;
+
+ type_path_entry_t *top = get_type_path_top(path);
+
+ type_t *type = skip_typeref(top->type);
+ if(is_type_union(type)) {
+ /* in unions only the first element is initialized */
+ top->v.compound_entry = NULL;
+ } else if(is_type_struct(type)) {
+ declaration_t *entry = top->v.compound_entry;
+
+ entry = entry->next;
+ top->v.compound_entry = entry;
+ if(entry != NULL) {
+ path->top_type = entry->type;
+ return;
}
} else {
- assert(is_type_compound(type));
- scope_t *const scope = &type->compound.declaration->scope;
+ assert(is_type_array(type));
- if(token.type == '[') {
- errorf(HERE,
- "array designator in initializer for compound type '%T'",
- type);
- skip_designator();
+ top->v.index++;
+
+ if(!type->array.size_constant || top->v.index < type->array.size) {
+ return;
}
+ }
- declaration_t *first = scope->declarations;
- if(first == NULL)
- return NULL;
- type_t *first_type = first->type;
- first_type = skip_typeref(first_type);
+ /* we're past the last member of the current sub-aggregate, try if we
+ * can ascend in the type hierarchy and continue with another subobject */
+ size_t len = ARR_LEN(path->path);
- initializer_t *sub;
- had_initializer_brace_warning = false;
- if(expression == NULL) {
- sub = parse_sub_initializer_elem(first_type);
- } else {
- sub = parse_sub_initializer(first_type, expression);
+ if(len > top_path_level) {
+ ascend_from_subtype(path);
+ advance_current_object(path, top_path_level);
+ } else {
+ path->invalid = true;
+ }
+}
+
+static void skip_initializers(void)
+{
+ if(token.type == '{')
+ next_token();
+
+ while(token.type != '}') {
+ if(token.type == T_EOF)
+ return;
+ if(token.type == '{') {
+ eat_block();
+ continue;
}
+ next_token();
+ }
+}
+
+static initializer_t *parse_sub_initializer(type_path_t *path,
+ type_t *outer_type, size_t top_path_level)
+{
+ type_t *orig_type = path->top_type;
+ type_t *type = skip_typeref(orig_type);
+
+ /* we can't do usefull stuff if we didn't even parse the type. Skip the
+ * initializers in this case. */
+ if(!is_type_valid(type)) {
+ skip_initializers();
+ return NULL;
+ }
+
+ initializer_t **initializers = NEW_ARR_F(initializer_t*, 0);
- /* didn't match the subtypes -> try our parent type */
- if(sub == NULL) {
- assert(!read_paren);
- return NULL;
+ while(true) {
+ designator_t *designator = NULL;
+ if(token.type == '.' || token.type == '[') {
+ designator = parse_designation();
+
+ /* reset path to toplevel, evaluate designator from there */
+ ascend_to(path, top_path_level);
+ if(!walk_designator(path, designator, false)) {
+ /* can't continue after designation error */
+ goto end_error;
+ }
+
+ initializer_t *designator_initializer
+ = allocate_initializer_zero(INITIALIZER_DESIGNATOR);
+ designator_initializer->designator.designator = designator;
+ ARR_APP1(initializer_t*, initializers, designator_initializer);
}
- elems = NEW_ARR_F(initializer_t*, 0);
- ARR_APP1(initializer_t*, elems, sub);
+ initializer_t *sub;
- declaration_t *iter = first->next;
- for( ; iter != NULL; iter = iter->next) {
- if(iter->symbol == NULL)
- continue;
- if(iter->namespc != NAMESPACE_NORMAL)
- continue;
+ if(token.type == '{') {
+ if(is_type_scalar(type)) {
+ sub = parse_scalar_initializer(type);
+ } else {
+ eat('{');
+ descend_into_subtype(path);
- if(token.type == '}')
- break;
- expect_block(',');
- if(token.type == '}')
- break;
+ sub = parse_sub_initializer(path, orig_type, top_path_level+1);
- type_t *iter_type = iter->type;
- iter_type = skip_typeref(iter_type);
+ ascend_from_subtype(path);
- sub = parse_sub_initializer_elem(iter_type);
- if(sub == NULL) {
- /* TODO error, do nicer cleanup */
- errorf(HERE, "member initializer didn't match");
- DEL_ARR_F(elems);
- return NULL;
+ expect_block('}');
+ }
+ } else {
+ /* must be an expression */
+ expression_t *expression = parse_assignment_expression();
+
+ /* handle { "string" } special case */
+ if((expression->kind == EXPR_STRING_LITERAL
+ || expression->kind == EXPR_WIDE_STRING_LITERAL)
+ && outer_type != NULL) {
+ sub = initializer_from_expression(outer_type, expression);
+ if(sub != NULL) {
+ if(token.type == ',') {
+ next_token();
+ }
+ if(token.type != '}') {
+ warningf(HERE, "excessive elements in initializer for type '%T'",
+ orig_type);
+ }
+ /* TODO: eat , ... */
+ return sub;
+ }
}
- ARR_APP1(initializer_t*, elems, sub);
- }
- }
- int len = ARR_LEN(elems);
- size_t elems_size = sizeof(initializer_t*) * len;
+ /* descend into subtypes until expression matches type */
+ while(true) {
+ orig_type = path->top_type;
+ type = skip_typeref(orig_type);
- initializer_list_t *init = allocate_ast_zero(sizeof(init[0]) + elems_size);
+ sub = initializer_from_expression(orig_type, expression);
+ if(sub != NULL) {
+ break;
+ }
+ if(!is_type_valid(type)) {
+ goto end_error;
+ }
+ if(is_type_scalar(type)) {
+ errorf(expression->base.source_position,
+ "expression '%E' doesn't match expected type '%T'",
+ expression, orig_type);
+ goto end_error;
+ }
- init->initializer.kind = INITIALIZER_LIST;
- init->len = len;
- memcpy(init->initializers, elems, elems_size);
- DEL_ARR_F(elems);
+ descend_into_subtype(path);
+ }
+ }
+ ARR_APP1(initializer_t*, initializers, sub);
- result = (initializer_t*) init;
+ if(token.type == '}') {
+ break;
+ }
+ expect(',');
+ if(token.type == '}') {
+ break;
+ }
- if(read_paren) {
- if(token.type == ',')
- next_token();
- expect('}');
+ advance_current_object(path, top_path_level);
+ orig_type = path->top_type;
+ type = skip_typeref(orig_type);
}
+
+ size_t len = ARR_LEN(initializers);
+ size_t size = sizeof(initializer_list_t) + len * sizeof(initializers[0]);
+ initializer_t *result = allocate_ast_zero(size);
+ result->kind = INITIALIZER_LIST;
+ result->list.len = len;
+ memcpy(&result->list.initializers, initializers,
+ len * sizeof(initializers[0]));
+
+ ascend_to(path, top_path_level);
+
+ /* TODO: if(is_global && !is_constant(...)) { error } */
+
return result;
+
+end_error:
+ skip_initializers();
+ DEL_ARR_F(initializers);
+ ascend_to(path, top_path_level);
+ return NULL;
}
static initializer_t *parse_initializer(type_t *const orig_type)
}
if(is_type_scalar(type)) {
- /* ยง 6.7.8.11 */
- eat('{');
+ /* TODO: ยง 6.7.8.11; eat {} without warning */
- expression_t *expression = parse_assignment_expression();
- result = initializer_from_expression(type, expression);
+ result = parse_scalar_initializer(type);
if(token.type == ',')
next_token();
- expect('}');
return result;
+ } else if(token.type == '{') {
+ next_token();
+
+ type_path_t path;
+ memset(&path, 0, sizeof(path));
+ path.top_type = orig_type;
+ path.path = NEW_ARR_F(type_path_entry_t, 0);
+
+ descend_into_subtype(&path);
+
+ result = parse_sub_initializer(&path, orig_type, 1);
+
+ DEL_ARR_F(path.path);
+
+ expect('}');
} else {
- result = parse_sub_initializer(type, NULL);
+ panic("TODO");
}
return result;
if(token.type == '=') {
next_token();
- entry->init.enum_value = parse_constant_expression();
+ expression_t *value = parse_constant_expression();
+
+ value = create_implicit_cast(value, enum_type);
+ entry->init.enum_value = value;
/* TODO semantic */
}
{
eat('(');
- type_t *type = allocate_type_zero(TYPE_FUNCTION, declaration->source_position);
+ type_t *type;
+ if(declaration != NULL) {
+ type = allocate_type_zero(TYPE_FUNCTION, declaration->source_position);
+ } else {
+ type = allocate_type_zero(TYPE_FUNCTION, token.source_position);
+ }
declaration_t *parameters = parse_parameters(&type->function);
if(declaration != NULL) {
parsed_array_t *parsed_array = (parsed_array_t*) iter;
type_t *array_type = allocate_type_zero(TYPE_ARRAY, (source_position_t){NULL, 0});
- array_type->base.qualifiers = parsed_array->type_qualifiers;
- array_type->array.element_type = type;
- array_type->array.is_static = parsed_array->is_static;
- array_type->array.is_variable = parsed_array->is_variable;
- array_type->array.size = parsed_array->size;
+ expression_t *size_expression = parsed_array->size;
+
+ array_type->base.qualifiers = parsed_array->type_qualifiers;
+ array_type->array.element_type = type;
+ array_type->array.is_static = parsed_array->is_static;
+ array_type->array.is_variable = parsed_array->is_variable;
+ array_type->array.size_expression = size_expression;
+
+ if(size_expression != NULL &&
+ is_constant_expression(size_expression)) {
+ array_type->array.size_constant = true;
+ array_type->array.size
+ = fold_constant(size_expression);
+ }
type_t *skipped_type = skip_typeref(type);
if (is_type_atomic(skipped_type, ATOMIC_TYPE_VOID)) {
if(is_type_array(type) && initializer != NULL) {
array_type_t *array_type = &type->array;
- if(array_type->size == NULL) {
- expression_t *cnst = allocate_expression_zero(EXPR_CONST);
-
- cnst->base.type = type_size_t;
-
+ if(array_type->size_expression == NULL) {
+ size_t size;
switch (initializer->kind) {
case INITIALIZER_LIST: {
- cnst->conste.v.int_value = initializer->list.len;
+ /* TODO */
+ size = initializer->list.len;
break;
}
case INITIALIZER_STRING: {
- cnst->conste.v.int_value = initializer->string.string.size;
+ size = initializer->string.string.size;
break;
}
case INITIALIZER_WIDE_STRING: {
- cnst->conste.v.int_value = initializer->wide_string.string.size;
+ size = initializer->wide_string.string.size;
break;
}
- default:
+ default: {
panic("invalid initializer type");
+ break;
+ }
}
- array_type->size = cnst;
- array_type->has_implicit_size = true;
+ expression_t *cnst = allocate_expression_zero(EXPR_CONST);
+ cnst->base.type = type_size_t;
+ cnst->conste.v.int_value = size;
+
+ array_type->size_expression = cnst;
+ array_type->size_constant = true;
+ array_type->size = size;
}
}
source_position);
} else {
errorf(HERE, "unknown symbol '%Y' found.", ref->symbol);
- return expression;
+ return create_invalid_expression();
}
}
/* TODO check if explicit cast is allowed and issue warnings/errors */
}
-static expression_t *parse_cast(void)
+static expression_t *parse_compound_literal(type_t *type)
{
- expression_t *cast = allocate_expression_zero(EXPR_UNARY_CAST);
+ expression_t *expression = allocate_expression_zero(EXPR_COMPOUND_LITERAL);
+
+ expression->compound_literal.type = type;
+ expression->compound_literal.initializer = parse_initializer(type);
+ expression->base.type = automatic_type_conversion(type);
+
+ return expression;
+}
- cast->base.source_position = token.source_position;
+static expression_t *parse_cast(void)
+{
+ source_position_t source_position = token.source_position;
type_t *type = parse_typename();
expect(')');
+
+ if(token.type == '{') {
+ return parse_compound_literal(type);
+ }
+
+ expression_t *cast = allocate_expression_zero(EXPR_UNARY_CAST);
+ cast->base.source_position = source_position;
+
expression_t *value = parse_sub_expression(20);
check_cast_allowed(value, type);
static designator_t *parse_designator(void)
{
- designator_t *result = allocate_ast_zero(sizeof(result[0]));
+ designator_t *result = allocate_ast_zero(sizeof(result[0]));
+ result->source_position = HERE;
if(token.type != T_IDENTIFIER) {
parse_error_expected("while parsing member designator",
eat_paren();
return NULL;
}
- designator_t *designator = allocate_ast_zero(sizeof(result[0]));
- designator->symbol = token.v.symbol;
+ designator_t *designator = allocate_ast_zero(sizeof(result[0]));
+ designator->source_position = HERE;
+ designator->symbol = token.v.symbol;
next_token();
last_designator->next = designator;
}
if(token.type == '[') {
next_token();
- designator_t *designator = allocate_ast_zero(sizeof(result[0]));
- designator->array_access = parse_expression();
- if(designator->array_access == NULL) {
+ designator_t *designator = allocate_ast_zero(sizeof(result[0]));
+ designator->source_position = HERE;
+ designator->array_index = parse_expression();
+ if(designator->array_index == NULL) {
eat_paren();
return NULL;
}
expression->base.type = type_size_t;
expect('(');
- expression->offsetofe.type = parse_typename();
+ type_t *type = parse_typename();
expect(',');
- expression->offsetofe.designator = parse_designator();
+ designator_t *designator = parse_designator();
expect(')');
+ expression->offsetofe.type = type;
+ expression->offsetofe.designator = designator;
+
+ type_path_t path;
+ memset(&path, 0, sizeof(path));
+ path.top_type = type;
+ path.path = NEW_ARR_F(type_path_entry_t, 0);
+
+ descend_into_subtype(&path);
+
+ if(!walk_designator(&path, designator, true)) {
+ return create_invalid_expression();
+ }
+
+ DEL_ARR_F(path.path);
+
return expression;
}
static expression_t *parse_primary_expression(void)
{
- switch(token.type) {
- case T_INTEGER:
- return parse_int_const();
- case T_CHARS:
- return parse_char_const();
- case T_FLOATINGPOINT:
- return parse_float_const();
- case T_STRING_LITERAL:
- case T_WIDE_STRING_LITERAL:
- return parse_string_const();
- case T_IDENTIFIER:
- return parse_reference();
- case T___FUNCTION__:
- case T___func__:
- return parse_function_keyword();
- case T___PRETTY_FUNCTION__:
- return parse_pretty_function_keyword();
- case T___builtin_offsetof:
- return parse_offsetof();
- case T___builtin_va_start:
- return parse_va_start();
- case T___builtin_va_arg:
- return parse_va_arg();
- case T___builtin_expect:
- return parse_builtin_expect();
- case T___builtin_alloca:
- case T___builtin_nan:
- case T___builtin_nand:
- case T___builtin_nanf:
- case T___builtin_va_end:
- return parse_builtin_symbol();
- case T___builtin_isgreater:
- case T___builtin_isgreaterequal:
- case T___builtin_isless:
- case T___builtin_islessequal:
- case T___builtin_islessgreater:
- case T___builtin_isunordered:
- return parse_compare_builtin();
- case T___builtin_constant_p:
- return parse_builtin_constant();
- case T___builtin_prefetch:
- return parse_builtin_prefetch();
- case T_assume:
- return parse_assume();
-
- case '(':
- return parse_brace_expression();
- }
-
- errorf(HERE, "unexpected token %K", &token);
+ switch (token.type) {
+ case T_INTEGER: return parse_int_const();
+ case T_CHARS: return parse_char_const();
+ case T_FLOATINGPOINT: return parse_float_const();
+ case T_STRING_LITERAL:
+ case T_WIDE_STRING_LITERAL: return parse_string_const();
+ case T_IDENTIFIER: return parse_reference();
+ case T___FUNCTION__:
+ case T___func__: return parse_function_keyword();
+ case T___PRETTY_FUNCTION__: return parse_pretty_function_keyword();
+ case T___builtin_offsetof: return parse_offsetof();
+ case T___builtin_va_start: return parse_va_start();
+ case T___builtin_va_arg: return parse_va_arg();
+ case T___builtin_expect: return parse_builtin_expect();
+ case T___builtin_alloca:
+ case T___builtin_nan:
+ case T___builtin_nand:
+ case T___builtin_nanf:
+ case T___builtin_va_end: return parse_builtin_symbol();
+ case T___builtin_isgreater:
+ case T___builtin_isgreaterequal:
+ case T___builtin_isless:
+ case T___builtin_islessequal:
+ case T___builtin_islessgreater:
+ case T___builtin_isunordered: return parse_compare_builtin();
+ case T___builtin_constant_p: return parse_builtin_constant();
+ case T___builtin_prefetch: return parse_builtin_prefetch();
+ case T_assume: return parse_assume();
+
+ case '(': return parse_brace_expression();
+ }
+
+ errorf(HERE, "unexpected token %K, expected an expression", &token);
eat_statement();
return create_invalid_expression();
expect(':');
expression_t *false_expression = parse_sub_expression(precedence);
- conditional->true_expression = true_expression;
- conditional->false_expression = false_expression;
-
type_t *const orig_true_type = true_expression->base.type;
type_t *const orig_false_type = false_expression->base.type;
type_t *const true_type = skip_typeref(orig_true_type);
&& pointers_compatible(true_type, false_type)) {
/* ok */
result_type = true_type;
+ } else if (is_type_pointer(true_type)
+ && is_null_pointer_constant(false_expression)) {
+ result_type = true_type;
+ } else if (is_type_pointer(false_type)
+ && is_null_pointer_constant(true_expression)) {
+ result_type = false_type;
} else {
- /* TODO */
+ /* TODO: one pointer to void*, other some pointer */
+
if (is_type_valid(true_type) && is_type_valid(false_type)) {
type_error_incompatible("while parsing conditional",
expression->base.source_position, true_type,
result_type = type_error_type;
}
+ conditional->true_expression
+ = create_implicit_cast(true_expression, result_type);
+ conditional->false_expression
+ = create_implicit_cast(false_expression, result_type);
conditional->base.type = result_type;
return result;
}
case EXPR_VA_START: return true;
case EXPR_VA_ARG: return true;
case EXPR_STATEMENT: return true; // TODO
+ case EXPR_COMPOUND_LITERAL: return false;
case EXPR_UNARY_NEGATE: return false;
case EXPR_UNARY_PLUS: return false;
case EXPR_UNARY_POSTFIX_DECREMENT: return true;
case EXPR_UNARY_PREFIX_INCREMENT: return true;
case EXPR_UNARY_PREFIX_DECREMENT: return true;
- case EXPR_UNARY_CAST:
- return is_type_atomic(expr->base.type, ATOMIC_TYPE_VOID);
+ case EXPR_UNARY_CAST: {
+ type_t *type = skip_typeref(expr->base.type);
+ return is_type_atomic(type, ATOMIC_TYPE_VOID);
+ }
case EXPR_UNARY_CAST_IMPLICIT: return true;
case EXPR_UNARY_ASSUME: return true;
case EXPR_UNARY_BITFIELD_EXTRACT: return false;
static case_label_statement_t *
find_default_label(const switch_statement_t *statement)
{
- for (case_label_statement_t *label = statement->first_case;
- label != NULL;
- label = label->next) {
+ case_label_statement_t *label = statement->first_case;
+ for ( ; label != NULL; label = label->next) {
if (label->expression == NULL)
return label;
}
errorf(statement->base.source_position,
"'default' label not within a switch statement");
}
- statement->label.statement = parse_statement();
+ statement->case_label.statement = parse_statement();
return statement;
}
projects / cparser / blobdiff