static elf_visibility_tag_t default_visibility = ELF_VISIBILITY_DEFAULT;
+#define PUSH_CURRENT_ENTITY(entity) \
+ entity_t *const new_current_entity = (entity); \
+ entity_t *const old_current_entity = current_entity; \
+ ((void)(current_entity = new_current_entity))
+#define POP_CURRENT_ENTITY() (assert(current_entity == new_current_entity), (void)(current_entity = old_current_entity))
+
#define PUSH_PARENT(stmt) \
statement_t *const new_parent = (stmt); \
statement_t *const old_parent = current_parent; \
case T_ANDAND: \
case T_CHARACTER_CONSTANT: \
case T_FLOATINGPOINT: \
- case T_FLOATINGPOINT_HEXADECIMAL: \
case T_INTEGER: \
- case T_INTEGER_HEXADECIMAL: \
- case T_INTEGER_OCTAL: \
case T_MINUSMINUS: \
case T_PLUSPLUS: \
case T_STRING_LITERAL: \
[EXPR_ENUM_CONSTANT] = sizeof(reference_expression_t),
[EXPR_LITERAL_BOOLEAN] = sizeof(literal_expression_t),
[EXPR_LITERAL_INTEGER] = sizeof(literal_expression_t),
- [EXPR_LITERAL_INTEGER_OCTAL] = sizeof(literal_expression_t),
- [EXPR_LITERAL_INTEGER_HEXADECIMAL]= sizeof(literal_expression_t),
[EXPR_LITERAL_FLOATINGPOINT] = sizeof(literal_expression_t),
- [EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL] = sizeof(literal_expression_t),
[EXPR_LITERAL_CHARACTER] = sizeof(literal_expression_t),
[EXPR_LITERAL_WIDE_CHARACTER] = sizeof(literal_expression_t),
[EXPR_STRING_LITERAL] = sizeof(string_literal_expression_t),
#endif
}
-static inline bool next_if(int const type)
+static inline bool next_if(token_kind_t const type)
{
if (token.kind == type) {
next_token();
/**
* Adds a token type to the token type anchor set (a multi-set).
*/
-static void add_anchor_token(int token_kind)
+static void add_anchor_token(token_kind_t const token_kind)
{
- assert(0 <= token_kind && token_kind < T_LAST_TOKEN);
+ assert(token_kind < T_LAST_TOKEN);
++token_anchor_set[token_kind];
}
-/**
- * Set the number of tokens types of the given type
- * to zero and return the old count.
- */
-static int save_and_reset_anchor_state(int token_kind)
-{
- assert(0 <= token_kind && token_kind < T_LAST_TOKEN);
- int count = token_anchor_set[token_kind];
- token_anchor_set[token_kind] = 0;
- return count;
-}
-
-/**
- * Restore the number of token types to the given count.
- */
-static void restore_anchor_state(int token_kind, int count)
-{
- assert(0 <= token_kind && token_kind < T_LAST_TOKEN);
- token_anchor_set[token_kind] = count;
-}
-
/**
* Remove a token type from the token type anchor set (a multi-set).
*/
-static void rem_anchor_token(int token_kind)
+static void rem_anchor_token(token_kind_t const token_kind)
{
- assert(0 <= token_kind && token_kind < T_LAST_TOKEN);
+ assert(token_kind < T_LAST_TOKEN);
assert(token_anchor_set[token_kind] != 0);
--token_anchor_set[token_kind];
}
/**
* Eat tokens until a matching token type is found.
*/
-static void eat_until_matching_token(int type)
+static void eat_until_matching_token(token_kind_t const type)
{
- int end_token;
+ token_kind_t end_token;
switch (type) {
case '(': end_token = ')'; break;
case '{': end_token = '}'; break;
static symbol_t *get_symbol_from_token(void)
{
switch(token.kind) {
- case T_IDENTIFIER:
- return token.identifier.symbol;
- case T_auto:
- case T_char:
- case T_double:
- case T_enum:
- case T_extern:
- case T_float:
- case T_int:
- case T_long:
- case T_register:
- case T_short:
- case T_static:
- case T_struct:
- case T_union:
- case T_unsigned:
- case T_void:
- case T_bool:
- case T__Bool:
- case T_class:
- case T_explicit:
- case T_export:
- case T_wchar_t:
- case T_const:
- case T_signed:
- case T___real__:
- case T___imag__:
- case T_restrict:
- case T_volatile:
- case T_inline:
- /* maybe we need more tokens ... add them on demand */
- return get_token_kind_symbol(token.kind);
- default:
+ case T_CHARACTER_CONSTANT:
+ case T_EOF:
+ case T_FLOATINGPOINT:
+ case T_INTEGER:
+ case T_STRING_LITERAL:
+ case T_WIDE_CHARACTER_CONSTANT:
+ case T_WIDE_STRING_LITERAL:
return NULL;
+
+ default:
+ return token.identifier.symbol;
}
}
{
eat('(');
add_anchor_token(')');
- int saved_comma_state = save_and_reset_anchor_state(',');
- if (token.kind == T_IDENTIFIER
- && !is_typedef_symbol(token.identifier.symbol)) {
- token_kind_t la1_type = (token_kind_t)look_ahead(1)->kind;
- if (la1_type == ',' || la1_type == ')') {
- type->kr_style_parameters = true;
- parse_identifier_list(scope);
- goto parameters_finished;
- }
- }
-
- if (token.kind == ')') {
+ if (token.kind == T_IDENTIFIER &&
+ !is_typedef_symbol(token.identifier.symbol) &&
+ (look_ahead(1)->kind == ',' || look_ahead(1)->kind == ')')) {
+ type->kr_style_parameters = true;
+ parse_identifier_list(scope);
+ } else if (token.kind == ')') {
/* ISO/IEC 14882:1998(E) §C.1.6:1 */
if (!(c_mode & _CXX))
type->unspecified_parameters = true;
} else if (has_parameters()) {
function_parameter_t **anchor = &type->parameters;
+ add_anchor_token(',');
do {
switch (token.kind) {
case T_DOTDOTDOT:
goto parameters_finished;
}
} while (next_if(','));
+parameters_finished:
+ rem_anchor_token(',');
}
-parameters_finished:
rem_anchor_token(')');
expect(')');
-
- restore_anchor_state(',', saved_comma_state);
}
typedef enum construct_type_kind_t {
}
}
-/**
- * Check if a symbol is the equal to "main".
- */
-static bool is_sym_main(const symbol_t *const sym)
-{
- return streq(sym->string, "main");
-}
-
static void error_redefined_as_different_kind(const source_position_t *pos,
const entity_t *old, entity_kind_t new_kind)
{
}
}
+static bool is_main(entity_t*);
+
/**
* record entities for the NAMESPACE_NORMAL, and produce error messages/warnings
* for various problems that occur for multiple definitions
if (symbol == NULL)
return entity;
+ assert(!entity->base.parent_scope);
+ assert(current_scope);
+ entity->base.parent_scope = current_scope;
+
entity_t *const previous_entity = get_entity(symbol, namespc);
/* pushing the same entity twice will break the stack structure */
assert(previous_entity != entity);
warningf(WARN_STRICT_PROTOTYPES, pos, "function declaration '%#N' is not a prototype", entity);
}
- if (current_scope == file_scope && is_sym_main(symbol)) {
+ if (is_main(entity)) {
check_main(entity);
}
}
case STORAGE_CLASS_EXTERN:
if (is_definition) {
- if (prev_type->function.unspecified_parameters && !is_sym_main(symbol)) {
+ if (prev_type->function.unspecified_parameters && !is_main(entity)) {
warningf(WARN_MISSING_PROTOTYPES, pos, "no previous prototype for '%#N'", entity);
}
} else if (new_storage_class == STORAGE_CLASS_NONE) {
if (entity->kind == ENTITY_FUNCTION) {
if (is_definition &&
entity->declaration.storage_class != STORAGE_CLASS_STATIC &&
- !is_sym_main(symbol)) {
+ !is_main(entity)) {
if (is_warn_on(WARN_MISSING_PROTOTYPES)) {
warningf(WARN_MISSING_PROTOTYPES, pos, "no previous prototype for '%#N'", entity);
} else {
}
finish:
- assert(entity->base.parent_scope == NULL);
- assert(current_scope != NULL);
-
- entity->base.parent_scope = current_scope;
environment_push(entity);
append_entity(current_scope, entity);
{
if (is_warn_on(WARN_UNUSED_PARAMETER)) {
const scope_t *scope = ¤t_function->parameters;
-
- /* do not issue unused warnings for main */
- if (!is_sym_main(current_function->base.base.symbol)) {
- warn_unused_entity(WARN_UNUSED_PARAMETER, scope->entities, NULL);
- }
+ warn_unused_entity(WARN_UNUSED_PARAMETER, scope->entities, NULL);
}
if (is_warn_on(WARN_UNUSED_VARIABLE)) {
walk_statements(current_function->statement, check_unused_variables,
type_t *const ret = skip_typeref(type->function.return_type);
if (!is_type_void(ret) &&
is_type_valid(ret) &&
- !is_sym_main(current_function->base.base.symbol)) {
+ !is_main(current_entity)) {
source_position_t const *const pos = &stmt->base.source_position;
warningf(WARN_RETURN_TYPE, pos, "control reaches end of non-void function");
}
return true;
}
+static void prepare_main_collect2(entity_t*);
+
static void parse_external_declaration(void)
{
/* function-definitions and declarations both start with declaration
if (ndeclaration != entity) {
function->parameters = ndeclaration->function.parameters;
}
- assert(is_declaration(entity));
- type = skip_typeref(entity->declaration.type);
PUSH_SCOPE(&function->parameters);
/* parse function body */
int label_stack_top = label_top();
function_t *old_current_function = current_function;
- entity_t *old_current_entity = current_entity;
current_function = function;
- current_entity = entity;
+ PUSH_CURRENT_ENTITY(entity);
PUSH_PARENT(NULL);
goto_first = NULL;
}
}
- if (is_main(entity) && enable_main_collect2_hack)
- prepare_main_collect2(entity);
+ if (is_main(entity)) {
+ /* Force main to C linkage. */
+ type_t *const type = entity->declaration.type;
+ assert(is_type_function(type));
+ if (type->function.linkage != LINKAGE_C) {
+ type_t *new_type = duplicate_type(type);
+ new_type->function.linkage = LINKAGE_C;
+ entity->declaration.type = identify_new_type(new_type);
+ }
+
+ if (enable_main_collect2_hack)
+ prepare_main_collect2(entity);
+ }
+ POP_CURRENT_ENTITY();
POP_PARENT();
assert(current_function == function);
- assert(current_entity == entity);
- current_entity = old_current_entity;
current_function = old_current_function;
label_pop_to(label_stack_top);
}
static expression_parser_function_t expression_parsers[T_LAST_TOKEN];
-/**
- * Prints an error message if an expression was expected but not read
- */
-static expression_t *expected_expression_error(void)
-{
- /* skip the error message if the error token was read */
- if (token.kind != T_ERROR) {
- errorf(HERE, "expected expression, got token %K", &token);
- }
- next_token();
-
- return create_error_expression();
-}
-
static type_t *get_string_type(void)
{
return is_warn_on(WARN_WRITE_STRINGS) ? type_const_char_ptr : type_char_ptr;
check_integer_suffix();
type = type_int;
break;
- case T_INTEGER_OCTAL:
- kind = EXPR_LITERAL_INTEGER_OCTAL;
- check_integer_suffix();
- type = type_int;
- break;
- case T_INTEGER_HEXADECIMAL:
- kind = EXPR_LITERAL_INTEGER_HEXADECIMAL;
- check_integer_suffix();
- type = type_int;
- break;
+
case T_FLOATINGPOINT:
kind = EXPR_LITERAL_FLOATINGPOINT;
type = check_floatingpoint_suffix();
break;
- case T_FLOATINGPOINT_HEXADECIMAL:
- kind = EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL;
- type = check_floatingpoint_suffix();
- break;
+
default:
panic("unexpected token type in parse_number_literal");
}
case T_false: return parse_boolean_literal(false);
case T_true: return parse_boolean_literal(true);
case T_INTEGER:
- case T_INTEGER_OCTAL:
- case T_INTEGER_HEXADECIMAL:
- case T_FLOATINGPOINT:
- case T_FLOATINGPOINT_HEXADECIMAL: return parse_number_literal();
+ case T_FLOATINGPOINT: return parse_number_literal();
case T_CHARACTER_CONSTANT: return parse_character_constant();
case T_WIDE_CHARACTER_CONSTANT: return parse_wide_character_constant();
case T_STRING_LITERAL:
case EXPR_LITERAL_CHARACTER:
case EXPR_LITERAL_WIDE_CHARACTER:
case EXPR_LITERAL_INTEGER:
- case EXPR_LITERAL_INTEGER_OCTAL:
- case EXPR_LITERAL_INTEGER_HEXADECIMAL:
case EXPR_LITERAL_FLOATINGPOINT:
- case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: return false;
case EXPR_STRING_LITERAL: return false;
case EXPR_WIDE_STRING_LITERAL: return false;
static expression_t *parse_subexpression(precedence_t precedence)
{
- if (token.kind < 0) {
- return expected_expression_error();
- }
-
expression_parser_function_t *parser
= &expression_parsers[token.kind];
expression_t *left;
assert(left != NULL);
while (true) {
- if (token.kind < 0) {
- return expected_expression_error();
- }
-
parser = &expression_parsers[token.kind];
if (parser->infix_parser == NULL)
break;
append_entity(current_scope, entity);
PUSH_SCOPE(&entity->namespacee.members);
-
- entity_t *old_current_entity = current_entity;
- current_entity = entity;
+ PUSH_CURRENT_ENTITY(entity);
add_anchor_token('}');
expect('{');
rem_anchor_token('}');
expect('}');
- assert(current_entity == entity);
- current_entity = old_current_entity;
+ POP_CURRENT_ENTITY();
POP_SCOPE();
}
}
}
-void prepare_main_collect2(entity_t *entity)
+static void prepare_main_collect2(entity_t *const entity)
{
PUSH_SCOPE(&entity->function.statement->compound.scope);
projects / cparser / blobdiff