/*
* This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include "type_hash.h"
#include "ast_t.h"
#include "entity_t.h"
+#include "attribute_t.h"
#include "lang_features.h"
#include "walk_statements.h"
#include "warning.h"
+#include "printer.h"
#include "adt/bitfiddle.h"
#include "adt/error.h"
#include "adt/array.h"
entity_namespace_t namespc;
} stack_entry_t;
-typedef struct argument_list_t argument_list_t;
-struct argument_list_t {
- long argument;
- argument_list_t *next;
-};
-
-typedef struct gnu_attribute_t gnu_attribute_t;
-struct gnu_attribute_t {
- gnu_attribute_kind_t kind; /**< The kind of the GNU attribute. */
- gnu_attribute_t *next;
- bool invalid; /**< Set if this attribute had argument errors, */
- bool has_arguments; /**< True, if this attribute has arguments. */
- union {
- size_t value;
- string_t string;
- symbol_t *symbol;
- long argument; /**< Single argument. */
- argument_list_t *arguments; /**< List of argument expressions. */
- } u;
-};
-
typedef struct declaration_specifiers_t declaration_specifiers_t;
struct declaration_specifiers_t {
source_position_t source_position;
unsigned char alignment; /**< Alignment, 0 if not set. */
bool is_inline : 1;
bool thread_local : 1; /**< GCC __thread */
- bool deprecated : 1;
- decl_modifiers_t modifiers; /**< declaration modifiers */
- gnu_attribute_t *gnu_attributes; /**< list of GNU attributes */
- const char *deprecated_string; /**< can be set if declaration was marked deprecated. */
- symbol_t *get_property_sym; /**< the name of the get property if set. */
- symbol_t *put_property_sym; /**< the name of the put property if set. */
+ attribute_t *attributes; /**< list of attributes */
type_t *type;
};
static scope_t *current_scope = NULL;
/** Point to the current function declaration if inside a function. */
static function_t *current_function = NULL;
+static entity_t *current_entity = NULL;
static entity_t *current_init_decl = NULL;
static switch_statement_t *current_switch = NULL;
static statement_t *current_loop = NULL;
static label_statement_t **label_anchor = NULL;
/** current translation unit. */
static translation_unit_t *unit = NULL;
-/** true if we are in a type property context (evaluation only for type. */
+/** true if we are in a type property context (evaluation only for type) */
static bool in_type_prop = false;
-/** true in we are in a __extension__ context. */
+/** true if we are in an __extension__ context. */
static bool in_gcc_extension = false;
static struct obstack temp_obst;
static entity_t *anonymous_entity;
#define POP_PARENT ((void)(current_parent = prev_parent))
/** special symbol used for anonymous entities. */
-static const symbol_t *sym_anonymous = NULL;
-
-/* symbols for Microsoft extended-decl-modifier */
-static const symbol_t *sym_align = NULL;
-static const symbol_t *sym_allocate = NULL;
-static const symbol_t *sym_dllimport = NULL;
-static const symbol_t *sym_dllexport = NULL;
-static const symbol_t *sym_naked = NULL;
-static const symbol_t *sym_noinline = NULL;
-static const symbol_t *sym_returns_twice = NULL;
-static const symbol_t *sym_noreturn = NULL;
-static const symbol_t *sym_nothrow = NULL;
-static const symbol_t *sym_novtable = NULL;
-static const symbol_t *sym_property = NULL;
-static const symbol_t *sym_get = NULL;
-static const symbol_t *sym_put = NULL;
-static const symbol_t *sym_selectany = NULL;
-static const symbol_t *sym_thread = NULL;
-static const symbol_t *sym_uuid = NULL;
-static const symbol_t *sym_deprecated = NULL;
-static const symbol_t *sym_restrict = NULL;
-static const symbol_t *sym_noalias = NULL;
+static symbol_t *sym_anonymous = NULL;
/** The token anchor set */
static unsigned char token_anchor_set[T_LAST_TOKEN];
/** true if we are in GCC mode. */
#define GNU_MODE ((c_mode & _GNUC) || in_gcc_extension)
-static type_t *type_valist;
-
static statement_t *parse_compound_statement(bool inside_expression_statement);
static statement_t *parse_statement(void);
-static expression_t *parse_sub_expression(precedence_t);
+static expression_t *parse_subexpression(precedence_t);
static expression_t *parse_expression(void);
static type_t *parse_typename(void);
static void parse_externals(void);
static void parse_compound_type_entries(compound_t *compound_declaration);
+static void check_call_argument(type_t *expected_type,
+ call_argument_t *argument, unsigned pos);
+
typedef enum declarator_flags_t {
DECL_FLAGS_NONE = 0,
DECL_MAY_BE_ABSTRACT = 1U << 0,
static entity_t *parse_declarator(const declaration_specifiers_t *specifiers,
declarator_flags_t flags);
-static entity_t *record_entity(entity_t *entity, bool is_definition);
-
static void semantic_comparison(binary_expression_t *expression);
-static void create_gnu_builtins(void);
-static void create_microsoft_intrinsics(void);
-
#define STORAGE_CLASSES \
STORAGE_CLASSES_NO_EXTERN \
case T_extern:
case T_unsigned: \
case T_void: \
case T_wchar_t: \
+ case T__int8: \
+ case T__int16: \
+ case T__int32: \
+ case T__int64: \
+ case T__int128: \
COMPLEX_SPECIFIERS \
IMAGINARY_SPECIFIERS
TYPE_QUALIFIERS \
TYPE_SPECIFIERS
-#define EXPRESSION_START \
- case '!': \
- case '&': \
- case '(': \
- case '*': \
- case '+': \
- case '-': \
- case '~': \
- case T_ANDAND: \
- case T_CHARACTER_CONSTANT: \
- case T_FLOATINGPOINT: \
- case T_INTEGER: \
- case T_MINUSMINUS: \
- case T_PLUSPLUS: \
- case T_STRING_LITERAL: \
- case T_WIDE_CHARACTER_CONSTANT: \
- case T_WIDE_STRING_LITERAL: \
- case T___FUNCDNAME__: \
- case T___FUNCSIG__: \
- case T___FUNCTION__: \
- case T___PRETTY_FUNCTION__: \
- case T___alignof__: \
- case T___builtin_classify_type: \
- case T___builtin_constant_p: \
- case T___builtin_isgreater: \
- case T___builtin_isgreaterequal: \
- case T___builtin_isless: \
- case T___builtin_islessequal: \
- case T___builtin_islessgreater: \
- case T___builtin_isunordered: \
- case T___builtin_offsetof: \
- case T___builtin_va_arg: \
- case T___builtin_va_start: \
- case T___func__: \
- case T___noop: \
- case T__assume: \
- case T_delete: \
- case T_false: \
- case T_sizeof: \
- case T_throw: \
+#define EXPRESSION_START \
+ case '!': \
+ case '&': \
+ case '(': \
+ case '*': \
+ case '+': \
+ case '-': \
+ case '~': \
+ 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: \
+ case T_WIDE_CHARACTER_CONSTANT: \
+ case T_WIDE_STRING_LITERAL: \
+ case T___FUNCDNAME__: \
+ case T___FUNCSIG__: \
+ case T___FUNCTION__: \
+ case T___PRETTY_FUNCTION__: \
+ case T___alignof__: \
+ case T___builtin_classify_type: \
+ case T___builtin_constant_p: \
+ case T___builtin_isgreater: \
+ case T___builtin_isgreaterequal: \
+ case T___builtin_isless: \
+ case T___builtin_islessequal: \
+ case T___builtin_islessgreater: \
+ case T___builtin_isunordered: \
+ case T___builtin_offsetof: \
+ case T___builtin_va_arg: \
+ case T___builtin_va_copy: \
+ case T___builtin_va_start: \
+ case T___func__: \
+ case T___noop: \
+ case T__assume: \
+ case T_delete: \
+ case T_false: \
+ case T_sizeof: \
+ case T_throw: \
case T_true:
-/**
- * Allocate an AST node with given size and
- * initialize all fields with zero.
- */
-static void *allocate_ast_zero(size_t size)
-{
- void *res = allocate_ast(size);
- memset(res, 0, size);
- return res;
-}
-
-/**
- * Returns the size of an entity node.
- *
- * @param kind the entity kind
- */
-static size_t get_entity_struct_size(entity_kind_t kind)
-{
- static const size_t sizes[] = {
- [ENTITY_VARIABLE] = sizeof(variable_t),
- [ENTITY_PARAMETER] = sizeof(parameter_t),
- [ENTITY_COMPOUND_MEMBER] = sizeof(compound_member_t),
- [ENTITY_FUNCTION] = sizeof(function_t),
- [ENTITY_TYPEDEF] = sizeof(typedef_t),
- [ENTITY_STRUCT] = sizeof(compound_t),
- [ENTITY_UNION] = sizeof(compound_t),
- [ENTITY_ENUM] = sizeof(enum_t),
- [ENTITY_ENUM_VALUE] = sizeof(enum_value_t),
- [ENTITY_LABEL] = sizeof(label_t),
- [ENTITY_LOCAL_LABEL] = sizeof(label_t),
- [ENTITY_NAMESPACE] = sizeof(namespace_t)
- };
- assert(kind < lengthof(sizes));
- assert(sizes[kind] != 0);
- return sizes[kind];
-}
-
-/**
- * Allocate an entity of given kind and initialize all
- * fields with zero.
- */
-static entity_t *allocate_entity_zero(entity_kind_t kind)
-{
- size_t size = get_entity_struct_size(kind);
- entity_t *entity = allocate_ast_zero(size);
- entity->kind = kind;
- return entity;
-}
-
/**
* Returns the size of a statement node.
*
[EXPR_INVALID] = sizeof(expression_base_t),
[EXPR_REFERENCE] = sizeof(reference_expression_t),
[EXPR_REFERENCE_ENUM_VALUE] = sizeof(reference_expression_t),
- [EXPR_CONST] = sizeof(const_expression_t),
- [EXPR_CHARACTER_CONSTANT] = sizeof(const_expression_t),
- [EXPR_WIDE_CHARACTER_CONSTANT] = sizeof(const_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),
- [EXPR_WIDE_STRING_LITERAL] = sizeof(wide_string_literal_expression_t),
+ [EXPR_WIDE_STRING_LITERAL] = sizeof(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_OFFSETOF] = sizeof(offsetof_expression_t),
[EXPR_VA_START] = sizeof(va_start_expression_t),
[EXPR_VA_ARG] = sizeof(va_arg_expression_t),
+ [EXPR_VA_COPY] = sizeof(va_copy_expression_t),
[EXPR_STATEMENT] = sizeof(statement_expression_t),
[EXPR_LABEL_ADDRESS] = sizeof(label_address_expression_t),
};
/**
* Allocate an expression node of given kind and initialize all
* fields with zero.
+ *
+ * @param kind the kind of the expression to allocate
*/
static expression_t *allocate_expression_zero(expression_kind_t kind)
{
return allocate_statement_zero(STATEMENT_EMPTY);
}
-/**
- * Returns the size of a type node.
- *
- * @param kind the type kind
- */
-static size_t get_type_struct_size(type_kind_t kind)
-{
- static const size_t sizes[] = {
- [TYPE_ATOMIC] = sizeof(atomic_type_t),
- [TYPE_COMPLEX] = sizeof(complex_type_t),
- [TYPE_IMAGINARY] = sizeof(imaginary_type_t),
- [TYPE_BITFIELD] = sizeof(bitfield_type_t),
- [TYPE_COMPOUND_STRUCT] = sizeof(compound_type_t),
- [TYPE_COMPOUND_UNION] = sizeof(compound_type_t),
- [TYPE_ENUM] = sizeof(enum_type_t),
- [TYPE_FUNCTION] = sizeof(function_type_t),
- [TYPE_POINTER] = sizeof(pointer_type_t),
- [TYPE_ARRAY] = sizeof(array_type_t),
- [TYPE_BUILTIN] = sizeof(builtin_type_t),
- [TYPE_TYPEDEF] = sizeof(typedef_type_t),
- [TYPE_TYPEOF] = sizeof(typeof_type_t),
- };
- assert(lengthof(sizes) == (int)TYPE_TYPEOF + 1);
- assert(kind <= TYPE_TYPEOF);
- assert(sizes[kind] != 0);
- return sizes[kind];
-}
-
-/**
- * Allocate a type node of given kind and initialize all
- * fields with zero.
- *
- * @param kind type kind to allocate
- */
-static type_t *allocate_type_zero(type_kind_t kind)
-{
- size_t size = get_type_struct_size(kind);
- type_t *res = obstack_alloc(type_obst, size);
- memset(res, 0, size);
- res->base.kind = kind;
-
- return res;
-}
-
static function_parameter_t *allocate_parameter(type_t *const type)
{
- function_parameter_t *const param = obstack_alloc(type_obst, sizeof(*param));
+ function_parameter_t *const param
+ = obstack_alloc(type_obst, sizeof(*param));
memset(param, 0, sizeof(*param));
param->type = type;
return param;
#endif
}
+static inline bool next_if(int const type)
+{
+ if (token.type == type) {
+ next_token();
+ return true;
+ } else {
+ return false;
+ }
+}
+
/**
* Return the next token with a given lookahead.
*/
static void eat_block(void)
{
eat_until_matching_token('{');
- if (token.type == '}')
- next_token();
+ next_if('}');
}
#define eat(token_type) (assert(token.type == (token_type)), next_token())
/**
* Expect the current token is the expected token.
* If not, generate an error, eat the current statement,
- * and goto the end_error label.
+ * and goto the error_label label.
*/
#define expect(expected, error_label) \
do { \
parse_error_expected(NULL, (expected), NULL); \
add_anchor_token(expected); \
eat_until_anchor(); \
- if (token.type == expected) \
- next_token(); \
+ next_if((expected)); \
rem_anchor_token(expected); \
goto error_label; \
} \
return NULL;
}
+/* §6.2.3:1 24) There is only one name space for tags even though three are
+ * possible. */
+static entity_t *get_tag(symbol_t const *const symbol,
+ entity_kind_tag_t const kind)
+{
+ entity_t *entity = get_entity(symbol, NAMESPACE_TAG);
+ if (entity != NULL && entity->kind != kind) {
+ errorf(HERE,
+ "'%Y' defined as wrong kind of tag (previous definition %P)",
+ symbol, &entity->base.source_position);
+ entity = NULL;
+ }
+ return entity;
+}
+
/**
* pushs an entity on the environment stack and links the corresponding symbol
* it.
}
}
- ARR_SHRINKLEN(*stack_ptr, (int) new_top);
+ ARR_SHRINKLEN(*stack_ptr, new_top);
}
/**
}
/**
- * Do integer promotion for a given type.
+ * §6.3.1.1:2 Do integer promotion for a given type.
*
* @param type the type to promote
* @return the promoted type
}
type_t *const type = skip_typeref(expression->base.type);
- return
- is_type_integer(type) &&
- is_constant_expression(expression) &&
- fold_constant(expression) == 0;
+ if (!is_type_integer(type))
+ return false;
+ switch (is_constant_expression(expression)) {
+ case EXPR_CLASS_ERROR: return true;
+ case EXPR_CLASS_CONSTANT: return !fold_constant_to_bool(expression);
+ default: return false;
+ }
}
/**
return ASSIGN_WARNING_POINTER_FROM_INT;
}
} else if ((is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) ||
- (is_type_atomic(type_left, ATOMIC_TYPE_BOOL)
- && is_type_pointer(type_right))) {
+ (is_type_atomic(type_left, ATOMIC_TYPE_BOOL)
+ && is_type_pointer(type_right))) {
return ASSIGN_SUCCESS;
} else if ((is_type_compound(type_left) && is_type_compound(type_right))
|| (is_type_builtin(type_left) && is_type_builtin(type_right))) {
static expression_t *parse_constant_expression(void)
{
- expression_t *result = parse_sub_expression(PREC_CONDITIONAL);
+ expression_t *result = parse_subexpression(PREC_CONDITIONAL);
- if (!is_constant_expression(result)) {
+ if (is_constant_expression(result) == EXPR_CLASS_VARIABLE) {
errorf(&result->base.source_position,
"expression '%E' is not constant", result);
}
static expression_t *parse_assignment_expression(void)
{
- return parse_sub_expression(PREC_ASSIGNMENT);
+ return parse_subexpression(PREC_ASSIGNMENT);
+}
+
+static void warn_string_concat(const source_position_t *pos)
+{
+ if (warning.traditional) {
+ warningf(pos, "traditional C rejects string constant concatenation");
+ }
}
static string_t parse_string_literals(void)
{
assert(token.type == T_STRING_LITERAL);
- string_t result = token.v.string;
+ string_t result = token.literal;
next_token();
while (token.type == T_STRING_LITERAL) {
- result = concat_strings(&result, &token.v.string);
+ warn_string_concat(&token.source_position);
+ result = concat_strings(&result, &token.literal);
next_token();
}
return result;
}
-static const char *const gnu_attribute_names[GNU_AK_LAST] = {
- [GNU_AK_CONST] = "const",
- [GNU_AK_VOLATILE] = "volatile",
- [GNU_AK_CDECL] = "cdecl",
- [GNU_AK_STDCALL] = "stdcall",
- [GNU_AK_FASTCALL] = "fastcall",
- [GNU_AK_DEPRECATED] = "deprecated",
- [GNU_AK_NOINLINE] = "noinline",
- [GNU_AK_RETURNS_TWICE] = "returns_twice",
- [GNU_AK_NORETURN] = "noreturn",
- [GNU_AK_NAKED] = "naked",
- [GNU_AK_PURE] = "pure",
- [GNU_AK_ALWAYS_INLINE] = "always_inline",
- [GNU_AK_MALLOC] = "malloc",
- [GNU_AK_WEAK] = "weak",
- [GNU_AK_CONSTRUCTOR] = "constructor",
- [GNU_AK_DESTRUCTOR] = "destructor",
- [GNU_AK_NOTHROW] = "nothrow",
- [GNU_AK_TRANSPARENT_UNION] = "transparent_union",
- [GNU_AK_COMMON] = "common",
- [GNU_AK_NOCOMMON] = "nocommon",
- [GNU_AK_PACKED] = "packed",
- [GNU_AK_SHARED] = "shared",
- [GNU_AK_NOTSHARED] = "notshared",
- [GNU_AK_USED] = "used",
- [GNU_AK_UNUSED] = "unused",
- [GNU_AK_NO_INSTRUMENT_FUNCTION] = "no_instrument_function",
- [GNU_AK_WARN_UNUSED_RESULT] = "warn_unused_result",
- [GNU_AK_LONGCALL] = "longcall",
- [GNU_AK_SHORTCALL] = "shortcall",
- [GNU_AK_LONG_CALL] = "long_call",
- [GNU_AK_SHORT_CALL] = "short_call",
- [GNU_AK_FUNCTION_VECTOR] = "function_vector",
- [GNU_AK_INTERRUPT] = "interrupt",
- [GNU_AK_INTERRUPT_HANDLER] = "interrupt_handler",
- [GNU_AK_NMI_HANDLER] = "nmi_handler",
- [GNU_AK_NESTING] = "nesting",
- [GNU_AK_NEAR] = "near",
- [GNU_AK_FAR] = "far",
- [GNU_AK_SIGNAL] = "signal",
- [GNU_AK_EIGTHBIT_DATA] = "eightbit_data",
- [GNU_AK_TINY_DATA] = "tiny_data",
- [GNU_AK_SAVEALL] = "saveall",
- [GNU_AK_FLATTEN] = "flatten",
- [GNU_AK_SSEREGPARM] = "sseregparm",
- [GNU_AK_EXTERNALLY_VISIBLE] = "externally_visible",
- [GNU_AK_RETURN_TWICE] = "return_twice",
- [GNU_AK_MAY_ALIAS] = "may_alias",
- [GNU_AK_MS_STRUCT] = "ms_struct",
- [GNU_AK_GCC_STRUCT] = "gcc_struct",
- [GNU_AK_DLLIMPORT] = "dllimport",
- [GNU_AK_DLLEXPORT] = "dllexport",
- [GNU_AK_ALIGNED] = "aligned",
- [GNU_AK_ALIAS] = "alias",
- [GNU_AK_SECTION] = "section",
- [GNU_AK_FORMAT] = "format",
- [GNU_AK_FORMAT_ARG] = "format_arg",
- [GNU_AK_WEAKREF] = "weakref",
- [GNU_AK_NONNULL] = "nonnull",
- [GNU_AK_TLS_MODEL] = "tls_model",
- [GNU_AK_VISIBILITY] = "visibility",
- [GNU_AK_REGPARM] = "regparm",
- [GNU_AK_MODE] = "mode",
- [GNU_AK_MODEL] = "model",
- [GNU_AK_TRAP_EXIT] = "trap_exit",
- [GNU_AK_SP_SWITCH] = "sp_switch",
- [GNU_AK_SENTINEL] = "sentinel"
-};
-
/**
* compare two string, ignoring double underscores on the second.
*/
return strcmp(s1, s2);
}
-/**
- * Allocate a new gnu temporal attribute of given kind.
- */
-static gnu_attribute_t *allocate_gnu_attribute(gnu_attribute_kind_t kind)
+static attribute_t *allocate_attribute_zero(attribute_kind_t kind)
{
- gnu_attribute_t *attribute = obstack_alloc(&temp_obst, sizeof(*attribute));
- attribute->kind = kind;
- attribute->next = NULL;
- attribute->invalid = false;
- attribute->has_arguments = false;
-
+ attribute_t *attribute = allocate_ast_zero(sizeof(*attribute));
+ attribute->kind = kind;
return attribute;
}
/**
- * Parse one constant expression argument of the given attribute.
- */
-static void parse_gnu_attribute_const_arg(gnu_attribute_t *attribute)
-{
- expression_t *expression;
- add_anchor_token(')');
- expression = parse_constant_expression();
- rem_anchor_token(')');
- expect(')', end_error);
- attribute->u.argument = fold_constant(expression);
- return;
-end_error:
- attribute->invalid = true;
-}
+ * Parse (gcc) attribute argument. From gcc comments in gcc source:
+ *
+ * attribute:
+ * __attribute__ ( ( attribute-list ) )
+ *
+ * attribute-list:
+ * attrib
+ * attribute_list , attrib
+ *
+ * attrib:
+ * empty
+ * any-word
+ * any-word ( identifier )
+ * any-word ( identifier , nonempty-expr-list )
+ * any-word ( expr-list )
+ *
+ * where the "identifier" must not be declared as a type, and
+ * "any-word" may be any identifier (including one declared as a
+ * type), a reserved word storage class specifier, type specifier or
+ * type qualifier. ??? This still leaves out most reserved keywords
+ * (following the old parser), shouldn't we include them, and why not
+ * allow identifiers declared as types to start the arguments?
+ *
+ * Matze: this all looks confusing and little systematic, so we're even less
+ * strict and parse any list of things which are identifiers or
+ * (assignment-)expressions.
+ */
+static attribute_argument_t *parse_attribute_arguments(void)
+{
+ attribute_argument_t *first = NULL;
+ attribute_argument_t **anchor = &first;
+ if (token.type != ')') do {
+ attribute_argument_t *argument = allocate_ast_zero(sizeof(*argument));
+
+ /* is it an identifier */
+ if (token.type == T_IDENTIFIER
+ && (look_ahead(1)->type == ',' || look_ahead(1)->type == ')')) {
+ symbol_t *symbol = token.symbol;
+ argument->kind = ATTRIBUTE_ARGUMENT_SYMBOL;
+ argument->v.symbol = symbol;
+ next_token();
+ } else {
+ /* must be an expression */
+ expression_t *expression = parse_assignment_expression();
-/**
- * Parse a list of constant expressions arguments of the given attribute.
- */
-static void parse_gnu_attribute_const_arg_list(gnu_attribute_t *attribute)
-{
- argument_list_t **list = &attribute->u.arguments;
- argument_list_t *entry;
- expression_t *expression;
- add_anchor_token(')');
- add_anchor_token(',');
- while (true) {
- expression = parse_constant_expression();
- entry = obstack_alloc(&temp_obst, sizeof(entry));
- entry->argument = fold_constant(expression);
- entry->next = NULL;
- *list = entry;
- list = &entry->next;
- if (token.type != ',')
- break;
- next_token();
- }
- rem_anchor_token(',');
- rem_anchor_token(')');
- expect(')', end_error);
- return;
-end_error:
- attribute->invalid = true;
-}
+ argument->kind = ATTRIBUTE_ARGUMENT_EXPRESSION;
+ argument->v.expression = expression;
+ }
-/**
- * Parse one string literal argument of the given attribute.
- */
-static void parse_gnu_attribute_string_arg(gnu_attribute_t *attribute,
- string_t *string)
-{
- add_anchor_token('(');
- if (token.type != T_STRING_LITERAL) {
- parse_error_expected("while parsing attribute directive",
- T_STRING_LITERAL, NULL);
- goto end_error;
- }
- *string = parse_string_literals();
- rem_anchor_token('(');
+ /* append argument */
+ *anchor = argument;
+ anchor = &argument->next;
+ } while (next_if(','));
expect(')', end_error);
- return;
+
+ return first;
+
end_error:
- attribute->invalid = true;
+ /* TODO... */
+ return first;
}
-/**
- * Parse one tls model of the given attribute.
- */
-static void parse_gnu_attribute_tls_model_arg(gnu_attribute_t *attribute)
+static attribute_t *parse_attribute_asm(void)
{
- static const char *const tls_models[] = {
- "global-dynamic",
- "local-dynamic",
- "initial-exec",
- "local-exec"
- };
- string_t string = { NULL, 0 };
- parse_gnu_attribute_string_arg(attribute, &string);
- if (string.begin != NULL) {
- for (size_t i = 0; i < 4; ++i) {
- if (strcmp(tls_models[i], string.begin) == 0) {
- attribute->u.value = i;
- return;
- }
- }
- errorf(HERE, "'%s' is an unrecognized tls model", string.begin);
- }
- attribute->invalid = true;
-}
+ eat(T_asm);
-/**
- * Parse one tls model of the given attribute.
- */
-static void parse_gnu_attribute_visibility_arg(gnu_attribute_t *attribute)
-{
- static const char *const visibilities[] = {
- "default",
- "protected",
- "hidden",
- "internal"
- };
- string_t string = { NULL, 0 };
- parse_gnu_attribute_string_arg(attribute, &string);
- if (string.begin != NULL) {
- for (size_t i = 0; i < 4; ++i) {
- if (strcmp(visibilities[i], string.begin) == 0) {
- attribute->u.value = i;
- return;
- }
- }
- errorf(HERE, "'%s' is an unrecognized visibility", string.begin);
- }
- attribute->invalid = true;
+ attribute_t *attribute = allocate_attribute_zero(ATTRIBUTE_GNU_ASM);
+
+ expect('(', end_error);
+ attribute->a.arguments = parse_attribute_arguments();
+ return attribute;
+
+end_error:
+ return NULL;
}
-/**
- * Parse one (code) model of the given attribute.
- */
-static void parse_gnu_attribute_model_arg(gnu_attribute_t *attribute)
+static symbol_t *get_symbol_from_token(void)
{
- static const char *const visibilities[] = {
- "small",
- "medium",
- "large"
- };
- string_t string = { NULL, 0 };
- parse_gnu_attribute_string_arg(attribute, &string);
- if (string.begin != NULL) {
- for (int i = 0; i < 3; ++i) {
- if (strcmp(visibilities[i], string.begin) == 0) {
- attribute->u.value = i;
- return;
- }
- }
- errorf(HERE, "'%s' is an unrecognized model", string.begin);
+ switch(token.type) {
+ case T_IDENTIFIER:
+ return token.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_symbol(&token);
+ default:
+ return NULL;
}
- attribute->invalid = true;
}
-/**
- * Parse one mode of the given attribute.
- */
-static void parse_gnu_attribute_mode_arg(gnu_attribute_t *attribute)
+static attribute_t *parse_attribute_gnu_single(void)
{
- add_anchor_token(')');
-
- if (token.type != T_IDENTIFIER) {
- expect(T_IDENTIFIER, end_error);
+ /* parse "any-word" */
+ symbol_t *symbol = get_symbol_from_token();
+ if (symbol == NULL) {
+ parse_error_expected("while parsing attribute((", T_IDENTIFIER, NULL);
+ return NULL;
}
- attribute->u.symbol = token.v.symbol;
+ const char *name = symbol->string;
next_token();
- rem_anchor_token(')');
- expect(')', end_error);
- return;
-end_error:
- attribute->invalid = true;
-}
+ attribute_kind_t kind;
+ for (kind = ATTRIBUTE_GNU_FIRST; kind <= ATTRIBUTE_GNU_LAST; ++kind) {
+ const char *attribute_name = get_attribute_name(kind);
+ if (attribute_name != NULL
+ && strcmp_underscore(attribute_name, name) == 0)
+ break;
+ }
-/**
- * Parse one interrupt argument of the given attribute.
- */
-static void parse_gnu_attribute_interrupt_arg(gnu_attribute_t *attribute)
-{
- static const char *const interrupts[] = {
- "IRQ",
- "FIQ",
- "SWI",
- "ABORT",
- "UNDEF"
- };
- string_t string = { NULL, 0 };
- parse_gnu_attribute_string_arg(attribute, &string);
- if (string.begin != NULL) {
- for (size_t i = 0; i < 5; ++i) {
- if (strcmp(interrupts[i], string.begin) == 0) {
- attribute->u.value = i;
- return;
- }
+ if (kind >= ATTRIBUTE_GNU_LAST) {
+ if (warning.attribute) {
+ warningf(HERE, "unknown attribute '%s' ignored", name);
}
- errorf(HERE, "'%s' is not an interrupt", string.begin);
+ /* TODO: we should still save the attribute in the list... */
+ kind = ATTRIBUTE_UNKNOWN;
}
- attribute->invalid = true;
+
+ attribute_t *attribute = allocate_attribute_zero(kind);
+
+ /* parse arguments */
+ if (next_if('('))
+ attribute->a.arguments = parse_attribute_arguments();
+
+ return attribute;
}
-/**
- * Parse ( identifier, const expression, const expression )
- */
-static void parse_gnu_attribute_format_args(gnu_attribute_t *attribute)
+static attribute_t *parse_attribute_gnu(void)
{
- static const char *const format_names[] = {
- "printf",
- "scanf",
- "strftime",
- "strfmon"
- };
- int i;
+ attribute_t *first = NULL;
+ attribute_t **anchor = &first;
- if (token.type != T_IDENTIFIER) {
- parse_error_expected("while parsing format attribute directive", T_IDENTIFIER, NULL);
- goto end_error;
- }
- const char *name = token.v.symbol->string;
- for (i = 0; i < 4; ++i) {
- if (strcmp_underscore(format_names[i], name) == 0)
- break;
- }
- if (i >= 4) {
- if (warning.attribute)
- warningf(HERE, "'%s' is an unrecognized format function type", name);
- }
- next_token();
+ eat(T___attribute__);
+ expect('(', end_error);
+ expect('(', end_error);
- expect(',', end_error);
- add_anchor_token(')');
- add_anchor_token(',');
- parse_constant_expression();
- rem_anchor_token(',');
- rem_anchor_token(')');
+ if (token.type != ')') do {
+ attribute_t *attribute = parse_attribute_gnu_single();
+ if (attribute == NULL)
+ goto end_error;
- expect(',', end_error);
- add_anchor_token(')');
- parse_constant_expression();
- rem_anchor_token(')');
+ *anchor = attribute;
+ anchor = &attribute->next;
+ } while (next_if(','));
expect(')', end_error);
- return;
+ expect(')', end_error);
+
end_error:
- attribute->u.value = true;
+ return first;
}
-/**
- * Check that a given GNU attribute has no arguments.
- */
-static void check_no_argument(gnu_attribute_t *attribute, const char *name)
+/** Parse attributes. */
+static attribute_t *parse_attributes(attribute_t *first)
{
- if (!attribute->has_arguments)
- return;
+ attribute_t **anchor = &first;
+ for (;;) {
+ while (*anchor != NULL)
+ anchor = &(*anchor)->next;
- /* should have no arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- eat_until_matching_token('(');
- /* we have already consumed '(', so we stop before ')', eat it */
- eat(')');
- attribute->invalid = true;
-}
+ attribute_t *attribute;
+ switch (token.type) {
+ case T___attribute__:
+ attribute = parse_attribute_gnu();
+ break;
-/**
- * Parse one GNU attribute.
- *
- * Note that attribute names can be specified WITH or WITHOUT
- * double underscores, ie const or __const__.
- *
- * The following attributes are parsed without arguments
- * const
- * volatile
- * cdecl
- * stdcall
- * fastcall
- * deprecated
- * noinline
- * noreturn
- * naked
- * pure
- * always_inline
- * malloc
- * weak
- * constructor
- * destructor
- * nothrow
- * transparent_union
- * common
- * nocommon
- * packed
- * shared
- * notshared
- * used
- * unused
- * no_instrument_function
- * warn_unused_result
- * longcall
- * shortcall
- * long_call
- * short_call
- * function_vector
- * interrupt_handler
- * nmi_handler
- * nesting
- * near
- * far
- * signal
- * eightbit_data
- * tiny_data
- * saveall
- * flatten
- * sseregparm
- * externally_visible
- * return_twice
- * may_alias
- * ms_struct
- * gcc_struct
- * dllimport
- * dllexport
- *
- * The following attributes are parsed with arguments
- * aligned( const expression )
- * alias( string literal )
- * section( string literal )
- * format( identifier, const expression, const expression )
- * format_arg( const expression )
- * tls_model( string literal )
- * visibility( string literal )
- * regparm( const expression )
- * model( string leteral )
- * trap_exit( const expression )
- * sp_switch( string literal )
- *
- * The following attributes might have arguments
- * weak_ref( string literal )
- * non_null( const expression // ',' )
- * interrupt( string literal )
- * sentinel( constant expression )
- */
-static decl_modifiers_t parse_gnu_attribute(gnu_attribute_t **attributes)
-{
- gnu_attribute_t *head = *attributes;
- gnu_attribute_t *last = *attributes;
- decl_modifiers_t modifiers = 0;
- gnu_attribute_t *attribute;
+ case T_asm:
+ attribute = parse_attribute_asm();
+ break;
- eat(T___attribute__);
- expect('(', end_error);
- expect('(', end_error);
+ case T_cdecl:
+ next_token();
+ attribute = allocate_attribute_zero(ATTRIBUTE_MS_CDECL);
+ break;
- if (token.type != ')') {
- /* find the end of the list */
- if (last != NULL) {
- while (last->next != NULL)
- last = last->next;
- }
-
- /* non-empty attribute list */
- while (true) {
- const char *name;
- if (token.type == T_const) {
- name = "const";
- } else if (token.type == T_volatile) {
- name = "volatile";
- } else if (token.type == T_cdecl) {
- /* __attribute__((cdecl)), WITH ms mode */
- name = "cdecl";
- } else if (token.type == T_IDENTIFIER) {
- const symbol_t *sym = token.v.symbol;
- name = sym->string;
- } else {
- parse_error_expected("while parsing GNU attribute", T_IDENTIFIER, NULL);
- break;
- }
+ case T__fastcall:
+ next_token();
+ attribute = allocate_attribute_zero(ATTRIBUTE_MS_FASTCALL);
+ break;
+ case T__forceinline:
next_token();
+ attribute = allocate_attribute_zero(ATTRIBUTE_MS_FORCEINLINE);
+ break;
- int i;
- for (i = 0; i < GNU_AK_LAST; ++i) {
- if (strcmp_underscore(gnu_attribute_names[i], name) == 0)
- break;
- }
- gnu_attribute_kind_t kind = (gnu_attribute_kind_t)i;
+ case T__stdcall:
+ next_token();
+ attribute = allocate_attribute_zero(ATTRIBUTE_MS_STDCALL);
+ break;
- attribute = NULL;
- if (kind == GNU_AK_LAST) {
- if (warning.attribute)
- warningf(HERE, "'%s' attribute directive ignored", name);
+ case T___thiscall:
+ next_token();
+ /* TODO record modifier */
+ if (warning.other)
+ warningf(HERE, "Ignoring declaration modifier %K", &token);
+ attribute = allocate_attribute_zero(ATTRIBUTE_MS_THISCALL);
+ break;
- /* skip possible arguments */
- if (token.type == '(') {
- eat_until_matching_token(')');
- }
- } else {
- /* check for arguments */
- attribute = allocate_gnu_attribute(kind);
- if (token.type == '(') {
- next_token();
- if (token.type == ')') {
- /* empty args are allowed */
- next_token();
- } else
- attribute->has_arguments = true;
- }
-
- switch (kind) {
- case GNU_AK_VOLATILE:
- case GNU_AK_NAKED:
- case GNU_AK_MALLOC:
- case GNU_AK_WEAK:
- case GNU_AK_COMMON:
- case GNU_AK_NOCOMMON:
- case GNU_AK_SHARED:
- case GNU_AK_NOTSHARED:
- case GNU_AK_NO_INSTRUMENT_FUNCTION:
- case GNU_AK_WARN_UNUSED_RESULT:
- case GNU_AK_LONGCALL:
- case GNU_AK_SHORTCALL:
- case GNU_AK_LONG_CALL:
- case GNU_AK_SHORT_CALL:
- case GNU_AK_FUNCTION_VECTOR:
- case GNU_AK_INTERRUPT_HANDLER:
- case GNU_AK_NMI_HANDLER:
- case GNU_AK_NESTING:
- case GNU_AK_NEAR:
- case GNU_AK_FAR:
- case GNU_AK_SIGNAL:
- case GNU_AK_EIGTHBIT_DATA:
- case GNU_AK_TINY_DATA:
- case GNU_AK_SAVEALL:
- case GNU_AK_FLATTEN:
- case GNU_AK_SSEREGPARM:
- case GNU_AK_EXTERNALLY_VISIBLE:
- case GNU_AK_RETURN_TWICE:
- case GNU_AK_MAY_ALIAS:
- case GNU_AK_MS_STRUCT:
- case GNU_AK_GCC_STRUCT:
- goto no_arg;
-
- case GNU_AK_CDECL: modifiers |= DM_CDECL; goto no_arg;
- case GNU_AK_FASTCALL: modifiers |= DM_FASTCALL; goto no_arg;
- case GNU_AK_STDCALL: modifiers |= DM_STDCALL; goto no_arg;
- case GNU_AK_UNUSED: modifiers |= DM_UNUSED; goto no_arg;
- case GNU_AK_USED: modifiers |= DM_USED; goto no_arg;
- case GNU_AK_PURE: modifiers |= DM_PURE; goto no_arg;
- case GNU_AK_CONST: modifiers |= DM_CONST; goto no_arg;
- case GNU_AK_ALWAYS_INLINE: modifiers |= DM_FORCEINLINE; goto no_arg;
- case GNU_AK_DLLIMPORT: modifiers |= DM_DLLIMPORT; goto no_arg;
- case GNU_AK_DLLEXPORT: modifiers |= DM_DLLEXPORT; goto no_arg;
- case GNU_AK_PACKED: modifiers |= DM_PACKED; goto no_arg;
- case GNU_AK_NOINLINE: modifiers |= DM_NOINLINE; goto no_arg;
- case GNU_AK_RETURNS_TWICE: modifiers |= DM_RETURNS_TWICE; goto no_arg;
- case GNU_AK_NORETURN: modifiers |= DM_NORETURN; goto no_arg;
- case GNU_AK_NOTHROW: modifiers |= DM_NOTHROW; goto no_arg;
- case GNU_AK_TRANSPARENT_UNION: modifiers |= DM_TRANSPARENT_UNION; goto no_arg;
- case GNU_AK_CONSTRUCTOR: modifiers |= DM_CONSTRUCTOR; goto no_arg;
- case GNU_AK_DESTRUCTOR: modifiers |= DM_DESTRUCTOR; goto no_arg;
- case GNU_AK_DEPRECATED: modifiers |= DM_DEPRECATED; goto no_arg;
-
- case GNU_AK_ALIGNED:
- /* __align__ may be used without an argument */
- if (attribute->has_arguments) {
- parse_gnu_attribute_const_arg(attribute);
- }
- break;
-
- case GNU_AK_FORMAT_ARG:
- case GNU_AK_REGPARM:
- case GNU_AK_TRAP_EXIT:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- attribute->invalid = true;
- } else
- parse_gnu_attribute_const_arg(attribute);
- break;
- case GNU_AK_ALIAS:
- case GNU_AK_SECTION:
- case GNU_AK_SP_SWITCH:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- attribute->invalid = true;
- } else
- parse_gnu_attribute_string_arg(attribute, &attribute->u.string);
- break;
- case GNU_AK_FORMAT:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- attribute->invalid = true;
- } else
- parse_gnu_attribute_format_args(attribute);
- break;
- case GNU_AK_WEAKREF:
- /* may have one string argument */
- if (attribute->has_arguments)
- parse_gnu_attribute_string_arg(attribute, &attribute->u.string);
- break;
- case GNU_AK_NONNULL:
- if (attribute->has_arguments)
- parse_gnu_attribute_const_arg_list(attribute);
- break;
- case GNU_AK_TLS_MODEL:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- } else
- parse_gnu_attribute_tls_model_arg(attribute);
- break;
- case GNU_AK_VISIBILITY:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- } else
- parse_gnu_attribute_visibility_arg(attribute);
- break;
- case GNU_AK_MODEL:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- } else {
- parse_gnu_attribute_model_arg(attribute);
- }
- break;
- case GNU_AK_MODE:
- if (!attribute->has_arguments) {
- /* should have arguments */
- errorf(HERE, "wrong number of arguments specified for '%s' attribute", name);
- } else {
- parse_gnu_attribute_mode_arg(attribute);
- }
- break;
- case GNU_AK_INTERRUPT:
- /* may have one string argument */
- if (attribute->has_arguments)
- parse_gnu_attribute_interrupt_arg(attribute);
- break;
- case GNU_AK_SENTINEL:
- /* may have one string argument */
- if (attribute->has_arguments)
- parse_gnu_attribute_const_arg(attribute);
- break;
- case GNU_AK_LAST:
- /* already handled */
- break;
-
-no_arg:
- check_no_argument(attribute, name);
- }
- }
- if (attribute != NULL) {
- if (last != NULL) {
- last->next = attribute;
- last = attribute;
- } else {
- head = last = attribute;
- }
- }
-
- if (token.type != ',')
- break;
- next_token();
- }
- }
- expect(')', end_error);
- expect(')', end_error);
-end_error:
- *attributes = head;
-
- return modifiers;
-}
-
-/**
- * Parse GNU attributes.
- */
-static decl_modifiers_t parse_attributes(gnu_attribute_t **attributes)
-{
- decl_modifiers_t modifiers = 0;
-
- while (true) {
- switch (token.type) {
- case T___attribute__:
- modifiers |= parse_gnu_attribute(attributes);
- continue;
-
- case T_asm:
- next_token();
- expect('(', end_error);
- if (token.type != T_STRING_LITERAL) {
- parse_error_expected("while parsing assembler attribute",
- T_STRING_LITERAL, NULL);
- eat_until_matching_token('(');
- break;
- } else {
- parse_string_literals();
- }
- expect(')', end_error);
- continue;
-
- case T_cdecl: modifiers |= DM_CDECL; break;
- case T__fastcall: modifiers |= DM_FASTCALL; break;
- case T__stdcall: modifiers |= DM_STDCALL; break;
-
- case T___thiscall:
- /* TODO record modifier */
- if (warning.other)
- warningf(HERE, "Ignoring declaration modifier %K", &token);
- break;
-
-end_error:
- default: return modifiers;
+ default:
+ return first;
}
- next_token();
+ *anchor = attribute;
+ anchor = &attribute->next;
}
}
mark_vars_read(expr->va_arge.ap, lhs_ent);
return;
+ case EXPR_VA_COPY:
+ mark_vars_read(expr->va_copye.src, lhs_ent);
+ return;
+
case EXPR_UNARY_CAST:
/* Special case: Use void cast to mark a variable as "read" */
if (is_type_atomic(skip_typeref(expr->base.type), ATOMIC_TYPE_VOID))
determine_lhs_ent(expr->va_starte.ap, lhs_ent);
return;
+ EXPR_LITERAL_CASES
case EXPR_UNKNOWN:
case EXPR_INVALID:
- case EXPR_CONST:
- case EXPR_CHARACTER_CONSTANT:
- case EXPR_WIDE_CHARACTER_CONSTANT:
case EXPR_STRING_LITERAL:
case EXPR_WIDE_STRING_LITERAL:
case EXPR_COMPOUND_LITERAL: // TODO init?
static designator_t *parse_designation(void)
{
- designator_t *result = NULL;
- designator_t *last = NULL;
+ designator_t *result = NULL;
+ designator_t **anchor = &result;
- while (true) {
+ for (;;) {
designator_t *designator;
switch (token.type) {
case '[':
T_IDENTIFIER, NULL);
return NULL;
}
- designator->symbol = token.v.symbol;
+ designator->symbol = token.symbol;
next_token();
break;
default:
}
assert(designator != NULL);
- if (last != NULL) {
- last->next = designator;
- } else {
- result = designator;
- }
- last = designator;
+ *anchor = designator;
+ anchor = &designator->next;
}
end_error:
return NULL;
}
-static initializer_t *initializer_from_string(array_type_t *type,
+static initializer_t *initializer_from_string(array_type_t *const type,
const string_t *const string)
{
/* TODO: check len vs. size of array type */
}
static initializer_t *initializer_from_wide_string(array_type_t *const type,
- wide_string_t *const string)
+ const string_t *const string)
{
/* TODO: check len vs. size of array type */
(void) 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 (akind == ATOMIC_TYPE_CHAR
- || akind == ATOMIC_TYPE_SCHAR
- || akind == ATOMIC_TYPE_UCHAR) {
- return initializer_from_string(array_type,
- &expression->string.value);
- }
- break;
+ case EXPR_STRING_LITERAL:
+ if (akind == ATOMIC_TYPE_CHAR
+ || akind == ATOMIC_TYPE_SCHAR
+ || akind == ATOMIC_TYPE_UCHAR) {
+ return initializer_from_string(array_type,
+ &expression->string_literal.value);
+ }
+ break;
- case EXPR_WIDE_STRING_LITERAL: {
- type_t *bare_wchar_type = skip_typeref(type_wchar_t);
- if (get_unqualified_type(element_type) == bare_wchar_type) {
- return initializer_from_wide_string(array_type,
- &expression->wide_string.value);
- }
- break;
+ case EXPR_WIDE_STRING_LITERAL: {
+ type_t *bare_wchar_type = skip_typeref(type_wchar_t);
+ if (get_unqualified_type(element_type) == bare_wchar_type) {
+ return initializer_from_wide_string(array_type,
+ &expression->string_literal.value);
}
+ break;
+ }
- default:
- break;
+ default:
+ break;
}
}
}
&expression->base.source_position);
initializer_t *const result = allocate_initializer_zero(INITIALIZER_VALUE);
-#if 0
- if (type->kind == TYPE_BITFIELD) {
- type = type->bitfield.base_type;
- }
-#endif
result->value.value = create_implicit_cast(expression, type);
return result;
*/
static bool is_initializer_constant(const expression_t *expression)
{
- return is_constant_expression(expression)
- || is_address_constant(expression);
+ return
+ is_constant_expression(expression) != EXPR_CLASS_VARIABLE ||
+ is_address_constant(expression) != EXPR_CLASS_VARIABLE;
}
/**
{
/* there might be extra {} hierarchies */
int braces = 0;
- if (token.type == '{') {
+ if (next_if('{')) {
if (warning.other)
warningf(HERE, "extra curly braces around scalar initializer");
do {
++braces;
- next_token();
- } while (token.type == '{');
+ } while (next_if('{'));
}
expression_t *expression = parse_assignment_expression();
mark_vars_read(expression, NULL);
if (must_be_constant && !is_initializer_constant(expression)) {
errorf(&expression->base.source_position,
- "Initialisation expression '%E' is not constant",
+ "initialisation expression '%E' is not constant",
expression);
}
bool additional_warning_displayed = false;
while (braces > 0) {
- if (token.type == ',') {
- next_token();
- }
+ next_if(',');
if (token.type != '}') {
if (!additional_warning_displayed && warning.other) {
warningf(HERE, "additional elements in scalar initializer");
type_t *real_type = skip_typeref(iter->declaration.type);
if (real_type->kind == TYPE_BITFIELD) {
errorf(&designator->source_position,
- "offsetof designator '%Y' may not specify bitfield",
+ "offsetof designator '%Y' must not specify bitfield",
symbol);
goto failed;
}
goto failed;
}
- long index = fold_constant(array_index);
+ long index = fold_constant_to_int(array_index);
if (!used_in_offsetof) {
if (index < 0) {
errorf(&designator->source_position,
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);
+ "designator [%E] (%d) exceeds array size %d",
+ array_index, index, array_size);
}
}
}
}
}
-/**
- * skip until token is found.
- */
-static void skip_until(int type)
-{
- while (token.type != type) {
- if (token.type == T_EOF)
- return;
- next_token();
- }
-}
-
/**
* skip any {...} blocks until a closing bracket is reached.
*/
static void skip_initializers(void)
{
- if (token.type == '{')
- next_token();
+ next_if('{');
while (token.type != '}') {
if (token.type == T_EOF)
/* GNU-style designator ("identifier: value") */
designator = allocate_ast_zero(sizeof(designator[0]));
designator->source_position = token.source_position;
- designator->symbol = token.v.symbol;
+ designator->symbol = token.symbol;
eat(T_IDENTIFIER);
eat(':');
if (type == NULL) {
/* we are already outside, ... */
+ if (outer_type == NULL)
+ goto error_parse_next;
type_t *const outer_type_skip = skip_typeref(outer_type);
if (is_type_compound(outer_type_skip) &&
!outer_type_skip->compound.compound->complete) {
&& outer_type != NULL) {
sub = initializer_from_expression(outer_type, expression);
if (sub != NULL) {
- if (token.type == ',') {
- next_token();
- }
+ next_if(',');
if (token.type != '}' && warning.other) {
warningf(HERE, "excessive elements in initializer for type '%T'",
orig_type);
error_excess:
if (warning.other) {
if (env->entity != NULL) {
- warningf(HERE, "excess elements in struct initializer for '%Y'",
- env->entity->base.symbol);
+ warningf(HERE, "excess elements in initializer for '%Y'",
+ env->entity->base.symbol);
} else {
- warningf(HERE, "excess elements in struct initializer");
+ warningf(HERE, "excess elements in initializer");
}
}
}
return NULL;
}
+static expression_t *make_size_literal(size_t value)
+{
+ expression_t *literal = allocate_expression_zero(EXPR_LITERAL_INTEGER);
+ literal->base.type = type_size_t;
+
+ char buf[128];
+ snprintf(buf, sizeof(buf), "%u", (unsigned) value);
+ literal->literal.value = make_string(buf);
+
+ return literal;
+}
+
/**
* Parses an initializer. Parsers either a compound literal
* (env->declaration == NULL) or an initializer of a declaration.
static initializer_t *parse_initializer(parse_initializer_env_t *env)
{
type_t *type = skip_typeref(env->type);
- size_t max_index = 0xdeadbeaf; // TODO: Resolve this uninitialized variable problem
+ size_t max_index = 0;
initializer_t *result;
if (is_type_scalar(type)) {
internal_errorf(HERE, "invalid initializer type");
}
- expression_t *cnst = allocate_expression_zero(EXPR_CONST);
- cnst->base.type = type_size_t;
- cnst->conste.v.int_value = size;
-
type_t *new_type = duplicate_type(type);
- new_type->array.size_expression = cnst;
+ new_type->array.size_expression = make_size_literal(size);
new_type->array.size_constant = true;
new_type->array.has_implicit_size = true;
new_type->array.size = size;
} else {
scope->entities = entity;
}
- scope->last_entity = entity;
+ entity->base.parent_entity = current_entity;
+ scope->last_entity = entity;
}
static compound_t *parse_compound_type_specifier(bool is_struct)
{
- gnu_attribute_t *attributes = NULL;
- decl_modifiers_t modifiers = 0;
- if (is_struct) {
- eat(T_struct);
- } else {
- eat(T_union);
- }
+ eat(is_struct ? T_struct : T_union);
- symbol_t *symbol = NULL;
- compound_t *compound = NULL;
+ symbol_t *symbol = NULL;
+ compound_t *compound = NULL;
+ attribute_t *attributes = NULL;
if (token.type == T___attribute__) {
- modifiers |= parse_attributes(&attributes);
+ attributes = parse_attributes(NULL);
}
+ entity_kind_tag_t const kind = is_struct ? ENTITY_STRUCT : ENTITY_UNION;
if (token.type == T_IDENTIFIER) {
- symbol = token.v.symbol;
+ /* the compound has a name, check if we have seen it already */
+ symbol = token.symbol;
next_token();
- namespace_tag_t const namespc =
- is_struct ? NAMESPACE_STRUCT : NAMESPACE_UNION;
- entity_t *entity = get_entity(symbol, namespc);
+ entity_t *entity = get_tag(symbol, kind);
if (entity != NULL) {
- assert(entity->kind == (is_struct ? ENTITY_STRUCT : ENTITY_UNION));
compound = &entity->compound;
if (compound->base.parent_scope != current_scope &&
(token.type == '{' || token.type == ';')) {
}
if (compound == NULL) {
- entity_kind_t kind = is_struct ? ENTITY_STRUCT : ENTITY_UNION;
- entity_t *entity = allocate_entity_zero(kind);
- compound = &entity->compound;
+ entity_t *entity = allocate_entity_zero(kind);
+ compound = &entity->compound;
- compound->base.namespc =
- (is_struct ? NAMESPACE_STRUCT : NAMESPACE_UNION);
+ compound->alignment = 1;
+ compound->base.namespc = NAMESPACE_TAG;
compound->base.source_position = token.source_position;
compound->base.symbol = symbol;
compound->base.parent_scope = current_scope;
if (token.type == '{') {
parse_compound_type_entries(compound);
- modifiers |= parse_attributes(&attributes);
/* ISO/IEC 14882:1998(E) §7.1.3:5 */
if (symbol == NULL) {
}
}
- compound->modifiers |= modifiers;
+ if (attributes != NULL) {
+ handle_entity_attributes(attributes, (entity_t*) compound);
+ }
+
return compound;
}
entity_t *entity = allocate_entity_zero(ENTITY_ENUM_VALUE);
entity->enum_value.enum_type = enum_type;
- entity->base.symbol = token.v.symbol;
+ entity->base.symbol = token.symbol;
entity->base.source_position = token.source_position;
next_token();
- if (token.type == '=') {
- next_token();
+ if (next_if('=')) {
expression_t *value = parse_constant_expression();
value = create_implicit_cast(value, enum_type);
}
record_entity(entity, false);
-
- if (token.type != ',')
- break;
- next_token();
- } while (token.type != '}');
+ } while (next_if(',') && token.type != '}');
rem_anchor_token('}');
expect('}', end_error);
static type_t *parse_enum_specifier(void)
{
- gnu_attribute_t *attributes = NULL;
- entity_t *entity;
- symbol_t *symbol;
+ entity_t *entity;
+ symbol_t *symbol;
eat(T_enum);
- if (token.type == T_IDENTIFIER) {
- symbol = token.v.symbol;
- next_token();
+ switch (token.type) {
+ case T_IDENTIFIER:
+ symbol = token.symbol;
+ next_token();
- entity = get_entity(symbol, NAMESPACE_ENUM);
- if (entity != NULL) {
- assert(entity->kind == ENTITY_ENUM);
- if (entity->base.parent_scope != current_scope &&
- (token.type == '{' || token.type == ';')) {
- /* we're in an inner scope and have a definition. Shadow
- * existing definition in outer scope */
- entity = NULL;
- } else if (entity->enume.complete && token.type == '{') {
- errorf(HERE, "multiple definitions of 'enum %Y' (previous definition %P)",
- symbol, &entity->base.source_position);
+ entity = get_tag(symbol, ENTITY_ENUM);
+ if (entity != NULL) {
+ if (entity->base.parent_scope != current_scope &&
+ (token.type == '{' || token.type == ';')) {
+ /* we're in an inner scope and have a definition. Shadow
+ * existing definition in outer scope */
+ entity = NULL;
+ } else if (entity->enume.complete && token.type == '{') {
+ errorf(HERE, "multiple definitions of 'enum %Y' (previous definition %P)",
+ symbol, &entity->base.source_position);
+ }
}
- }
- } else if (token.type != '{') {
- parse_error_expected("while parsing enum type specifier",
- T_IDENTIFIER, '{', NULL);
- return NULL;
- } else {
- entity = NULL;
- symbol = NULL;
+ break;
+
+ case '{':
+ entity = NULL;
+ symbol = NULL;
+ break;
+
+ default:
+ parse_error_expected("while parsing enum type specifier",
+ T_IDENTIFIER, '{', NULL);
+ return NULL;
}
if (entity == NULL) {
entity = allocate_entity_zero(ENTITY_ENUM);
- entity->base.namespc = NAMESPACE_ENUM;
+ entity->base.namespc = NAMESPACE_TAG;
entity->base.source_position = token.source_position;
entity->base.symbol = symbol;
entity->base.parent_scope = current_scope;
entity->enume.complete = true;
parse_enum_entries(type);
- parse_attributes(&attributes);
+ parse_attributes(NULL);
/* ISO/IEC 14882:1998(E) §7.1.3:5 */
if (symbol == NULL) {
bool old_gcc_extension = in_gcc_extension;
in_type_prop = true;
- while (token.type == T___extension__) {
+ while (next_if(T___extension__)) {
/* This can be a prefix to a typename or an expression. */
- next_token();
in_gcc_extension = true;
}
switch (token.type) {
case T_IDENTIFIER:
- if (is_typedef_symbol(token.v.symbol)) {
+ if (is_typedef_symbol(token.symbol)) {
+ TYPENAME_START
type = parse_typename();
} else {
+ default:
expression = parse_expression();
type = revert_automatic_type_conversion(expression);
}
break;
-
- TYPENAME_START
- type = parse_typename();
- break;
-
- default:
- expression = parse_expression();
- type = expression->base.type;
- break;
}
in_type_prop = old_type_prop;
in_gcc_extension = old_gcc_extension;
return type;
}
-/**
- * check for the allowed MS alignment values.
- */
-static bool check_alignment_value(long long intvalue)
+static attribute_t *parse_attribute_ms_property(attribute_t *attribute)
{
- if (intvalue < 1 || intvalue > 8192) {
- errorf(HERE, "illegal alignment value");
- return false;
- }
- unsigned v = (unsigned)intvalue;
- for (unsigned i = 1; i <= 8192; i += i) {
- if (i == v)
- return true;
- }
- errorf(HERE, "alignment must be power of two");
- return false;
-}
+ expect('(', end_error);
-#define DET_MOD(name, tag) do { \
- if (*modifiers & tag && warning.other) warningf(HERE, #name " used more than once"); \
- *modifiers |= tag; \
-} while (0)
+ attribute_property_argument_t *property
+ = allocate_ast_zero(sizeof(*property));
-static void parse_microsoft_extended_decl_modifier(declaration_specifiers_t *specifiers)
-{
- decl_modifiers_t *modifiers = &specifiers->modifiers;
+ do {
+ if (token.type != T_IDENTIFIER) {
+ parse_error_expected("while parsing property declspec",
+ T_IDENTIFIER, NULL);
+ goto end_error;
+ }
- while (true) {
- if (token.type == T_restrict) {
- next_token();
- DET_MOD(restrict, DM_RESTRICT);
- goto end_loop;
- } else if (token.type != T_IDENTIFIER)
- break;
- symbol_t *symbol = token.v.symbol;
- if (symbol == sym_align) {
- next_token();
- expect('(', end_error);
- if (token.type != T_INTEGER)
- goto end_error;
- if (check_alignment_value(token.v.intvalue)) {
- if (specifiers->alignment != 0 && warning.other)
- warningf(HERE, "align used more than once");
- specifiers->alignment = (unsigned char)token.v.intvalue;
- }
- next_token();
- expect(')', end_error);
- } else if (symbol == sym_allocate) {
- next_token();
- expect('(', end_error);
- if (token.type != T_IDENTIFIER)
- goto end_error;
- (void)token.v.symbol;
- expect(')', end_error);
- } else if (symbol == sym_dllimport) {
- next_token();
- DET_MOD(dllimport, DM_DLLIMPORT);
- } else if (symbol == sym_dllexport) {
- next_token();
- DET_MOD(dllexport, DM_DLLEXPORT);
- } else if (symbol == sym_thread) {
- next_token();
- DET_MOD(thread, DM_THREAD);
- } else if (symbol == sym_naked) {
- next_token();
- DET_MOD(naked, DM_NAKED);
- } else if (symbol == sym_noinline) {
- next_token();
- DET_MOD(noinline, DM_NOINLINE);
- } else if (symbol == sym_returns_twice) {
- next_token();
- DET_MOD(returns_twice, DM_RETURNS_TWICE);
- } else if (symbol == sym_noreturn) {
- next_token();
- DET_MOD(noreturn, DM_NORETURN);
- } else if (symbol == sym_nothrow) {
- next_token();
- DET_MOD(nothrow, DM_NOTHROW);
- } else if (symbol == sym_novtable) {
- next_token();
- DET_MOD(novtable, DM_NOVTABLE);
- } else if (symbol == sym_property) {
- next_token();
- expect('(', end_error);
- for (;;) {
- bool is_get = false;
- if (token.type != T_IDENTIFIER)
- goto end_error;
- if (token.v.symbol == sym_get) {
- is_get = true;
- } else if (token.v.symbol == sym_put) {
- } else {
- errorf(HERE, "Bad property name '%Y'", token.v.symbol);
- goto end_error;
- }
- next_token();
- expect('=', end_error);
- if (token.type != T_IDENTIFIER)
- goto end_error;
- if (is_get) {
- if (specifiers->get_property_sym != NULL) {
- errorf(HERE, "get property name already specified");
- } else {
- specifiers->get_property_sym = token.v.symbol;
- }
- } else {
- if (specifiers->put_property_sym != NULL) {
- errorf(HERE, "put property name already specified");
- } else {
- specifiers->put_property_sym = token.v.symbol;
- }
- }
- next_token();
- if (token.type == ',') {
- next_token();
- continue;
- }
- break;
- }
- expect(')', end_error);
- } else if (symbol == sym_selectany) {
- next_token();
- DET_MOD(selectany, DM_SELECTANY);
- } else if (symbol == sym_uuid) {
- next_token();
- expect('(', end_error);
- if (token.type != T_STRING_LITERAL)
- goto end_error;
- next_token();
- expect(')', end_error);
- } else if (symbol == sym_deprecated) {
- next_token();
- if (specifiers->deprecated != 0 && warning.other)
- warningf(HERE, "deprecated used more than once");
- specifiers->deprecated = true;
- if (token.type == '(') {
- next_token();
- if (token.type == T_STRING_LITERAL) {
- specifiers->deprecated_string = token.v.string.begin;
- next_token();
- } else {
- errorf(HERE, "string literal expected");
- }
- expect(')', end_error);
- }
- } else if (symbol == sym_noalias) {
- next_token();
- DET_MOD(noalias, DM_NOALIAS);
+ bool is_put;
+ symbol_t *symbol = token.symbol;
+ next_token();
+ if (strcmp(symbol->string, "put") == 0) {
+ is_put = true;
+ } else if (strcmp(symbol->string, "get") == 0) {
+ is_put = false;
} else {
- if (warning.other)
- warningf(HERE, "Unknown modifier '%Y' ignored", token.v.symbol);
- next_token();
- if (token.type == '(')
- skip_until(')');
+ errorf(HERE, "expected put or get in property declspec");
+ goto end_error;
}
-end_loop:
- if (token.type == ',')
- next_token();
- }
+ expect('=', end_error);
+ if (token.type != T_IDENTIFIER) {
+ parse_error_expected("while parsing property declspec",
+ T_IDENTIFIER, NULL);
+ goto end_error;
+ }
+ if (is_put) {
+ property->put_symbol = token.symbol;
+ } else {
+ property->get_symbol = token.symbol;
+ }
+ next_token();
+ } while (next_if(','));
+
+ attribute->a.property = property;
+
+ expect(')', end_error);
+
end_error:
- return;
+ return attribute;
}
-static entity_t *create_error_entity(symbol_t *symbol, entity_kind_tag_t kind)
+static attribute_t *parse_microsoft_extended_decl_modifier_single(void)
{
- entity_t *entity = allocate_entity_zero(kind);
- entity->base.source_position = *HERE;
- entity->base.symbol = symbol;
- if (is_declaration(entity)) {
- entity->declaration.type = type_error_type;
- entity->declaration.implicit = true;
- } else if (kind == ENTITY_TYPEDEF) {
- entity->typedefe.type = type_error_type;
- entity->typedefe.builtin = true;
- }
- if (kind != ENTITY_COMPOUND_MEMBER)
- record_entity(entity, false);
- return entity;
-}
+ attribute_kind_t kind = ATTRIBUTE_UNKNOWN;
+ if (next_if(T_restrict)) {
+ kind = ATTRIBUTE_MS_RESTRICT;
+ } else if (token.type == T_IDENTIFIER) {
+ const char *name = token.symbol->string;
+ next_token();
+ for (attribute_kind_t k = ATTRIBUTE_MS_FIRST; k <= ATTRIBUTE_MS_LAST;
+ ++k) {
+ const char *attribute_name = get_attribute_name(k);
+ if (attribute_name != NULL && strcmp(attribute_name, name) == 0) {
+ kind = k;
+ break;
+ }
+ }
-static variable_t *parse_microsoft_based(void)
-{
- if (token.type != T_IDENTIFIER) {
- parse_error_expected("while parsing __based", T_IDENTIFIER, NULL);
- return NULL;
- }
- symbol_t *symbol = token.v.symbol;
- entity_t *entity = get_entity(symbol, NAMESPACE_NORMAL);
-
- variable_t *variable;
- if (entity == NULL || entity->base.kind != ENTITY_VARIABLE) {
- errorf(HERE, "'%Y' is not a variable name.", symbol);
- variable = &create_error_entity(symbol, ENTITY_VARIABLE)->variable;
- } else {
- variable = &entity->variable;
-
- type_t *const type = variable->base.type;
- if (is_type_valid(type)) {
- if (! is_type_pointer(skip_typeref(type))) {
- errorf(HERE, "variable in __based modifier must have pointer type instead of '%T'", type);
- }
- if (variable->base.base.parent_scope != file_scope) {
- errorf(HERE, "a nonstatic local variable may not be used in a __based specification");
- }
+ if (kind == ATTRIBUTE_UNKNOWN && warning.attribute) {
+ warningf(HERE, "unknown __declspec '%s' ignored", name);
}
+ } else {
+ parse_error_expected("while parsing __declspec", T_IDENTIFIER, NULL);
+ return NULL;
}
- next_token();
- return variable;
-}
-
-/**
- * Finish the construction of a struct type by calculating
- * its size, offsets, alignment.
- */
-static void finish_struct_type(compound_type_t *type)
-{
- assert(type->compound != NULL);
-
- compound_t *compound = type->compound;
- if (!compound->complete)
- return;
-
- il_size_t size = 0;
- il_size_t offset;
- il_alignment_t alignment = 1;
- bool need_pad = false;
-
- entity_t *entry = compound->members.entities;
- for (; entry != NULL; entry = entry->base.next) {
- if (entry->kind != ENTITY_COMPOUND_MEMBER)
- continue;
-
- type_t *m_type = skip_typeref(entry->declaration.type);
- if (! is_type_valid(m_type)) {
- /* simply ignore errors here */
- continue;
- }
- il_alignment_t m_alignment = m_type->base.alignment;
- if (m_alignment > alignment)
- alignment = m_alignment;
- offset = (size + m_alignment - 1) & -m_alignment;
+ attribute_t *attribute = allocate_attribute_zero(kind);
- if (offset > size)
- need_pad = true;
- entry->compound_member.offset = offset;
- size = offset + m_type->base.size;
+ if (kind == ATTRIBUTE_MS_PROPERTY) {
+ return parse_attribute_ms_property(attribute);
}
- if (type->base.alignment != 0) {
- alignment = type->base.alignment;
- }
-
- offset = (size + alignment - 1) & -alignment;
- if (offset > size)
- need_pad = true;
- if (need_pad) {
- if (warning.padded) {
- warningf(&compound->base.source_position, "'%T' needs padding", type);
- }
- } else {
- if (compound->modifiers & DM_PACKED && warning.packed) {
- warningf(&compound->base.source_position,
- "superfluous packed attribute on '%T'", type);
- }
- }
+ /* parse arguments */
+ if (next_if('('))
+ attribute->a.arguments = parse_attribute_arguments();
- type->base.size = offset;
- type->base.alignment = alignment;
+ return attribute;
}
-/**
- * Finish the construction of an union type by calculating
- * its size and alignment.
- */
-static void finish_union_type(compound_type_t *type)
+static attribute_t *parse_microsoft_extended_decl_modifier(attribute_t *first)
{
- assert(type->compound != NULL);
+ eat(T__declspec);
- compound_t *compound = type->compound;
- if (! compound->complete)
- return;
+ expect('(', end_error);
- il_size_t size = 0;
- il_alignment_t alignment = 1;
+ if (next_if(')'))
+ return NULL;
- entity_t *entry = compound->members.entities;
- for (; entry != NULL; entry = entry->base.next) {
- if (entry->kind != ENTITY_COMPOUND_MEMBER)
- continue;
+ add_anchor_token(')');
- type_t *m_type = skip_typeref(entry->declaration.type);
- if (! is_type_valid(m_type))
- continue;
+ attribute_t **anchor = &first;
+ do {
+ while (*anchor != NULL)
+ anchor = &(*anchor)->next;
- entry->compound_member.offset = 0;
- if (m_type->base.size > size)
- size = m_type->base.size;
- if (m_type->base.alignment > alignment)
- alignment = m_type->base.alignment;
- }
- if (type->base.alignment != 0) {
- alignment = type->base.alignment;
- }
- size = (size + alignment - 1) & -alignment;
- type->base.size = size;
- type->base.alignment = alignment;
-}
+ attribute_t *attribute
+ = parse_microsoft_extended_decl_modifier_single();
+ if (attribute == NULL)
+ goto end_error;
-static type_t *handle_attribute_mode(const gnu_attribute_t *attribute,
- type_t *orig_type)
-{
- type_t *type = skip_typeref(orig_type);
+ *anchor = attribute;
+ anchor = &attribute->next;
+ } while (next_if(','));
- /* at least: byte, word, pointer, list of machine modes
- * __XXX___ is interpreted as XXX */
-
- /* This isn't really correct, the backend should provide a list of machine
- * specific modes (according to gcc philosophy that is...) */
- const char *symbol_str = attribute->u.symbol->string;
- bool sign = is_type_signed(type);
- atomic_type_kind_t akind;
- if (strcmp_underscore("QI", symbol_str) == 0 ||
- strcmp_underscore("byte", symbol_str) == 0) {
- akind = sign ? ATOMIC_TYPE_CHAR : ATOMIC_TYPE_UCHAR;
- } else if (strcmp_underscore("HI", symbol_str) == 0) {
- akind = sign ? ATOMIC_TYPE_SHORT : ATOMIC_TYPE_USHORT;
- } else if (strcmp_underscore("SI", symbol_str) == 0
- || strcmp_underscore("word", symbol_str) == 0
- || strcmp_underscore("pointer", symbol_str) == 0) {
- akind = sign ? ATOMIC_TYPE_INT : ATOMIC_TYPE_UINT;
- } else if (strcmp_underscore("DI", symbol_str) == 0) {
- akind = sign ? ATOMIC_TYPE_LONGLONG : ATOMIC_TYPE_ULONGLONG;
- } else {
- if (warning.other)
- warningf(HERE, "ignoring unknown mode '%s'", symbol_str);
- return orig_type;
- }
-
- if (type->kind == TYPE_ATOMIC) {
- type_t *copy = duplicate_type(type);
- copy->atomic.akind = akind;
- return identify_new_type(copy);
- } else if (type->kind == TYPE_ENUM) {
- type_t *copy = duplicate_type(type);
- copy->enumt.akind = akind;
- return identify_new_type(copy);
- } else if (is_type_pointer(type)) {
- warningf(HERE, "__attribute__((mode)) on pointers not implemented yet (ignored)");
- return type;
- }
+ rem_anchor_token(')');
+ expect(')', end_error);
+ return first;
- errorf(HERE, "__attribute__((mode)) only allowed on integer, enum or pointer type");
- return orig_type;
+end_error:
+ rem_anchor_token(')');
+ return first;
}
-static type_t *handle_type_attributes(const gnu_attribute_t *attributes,
- type_t *type)
+static entity_t *create_error_entity(symbol_t *symbol, entity_kind_tag_t kind)
{
- const gnu_attribute_t *attribute = attributes;
- for ( ; attribute != NULL; attribute = attribute->next) {
- if (attribute->invalid)
- continue;
-
- if (attribute->kind == GNU_AK_MODE) {
- type = handle_attribute_mode(attribute, type);
- } else if (attribute->kind == GNU_AK_ALIGNED) {
- int alignment = 32; /* TODO: fill in maximum useful alignment for
- target machine */
- if (attribute->has_arguments)
- alignment = attribute->u.argument;
-
- type_t *copy = duplicate_type(type);
- copy->base.alignment = attribute->u.argument;
- type = identify_new_type(copy);
- }
+ entity_t *entity = allocate_entity_zero(kind);
+ entity->base.source_position = *HERE;
+ entity->base.symbol = symbol;
+ if (is_declaration(entity)) {
+ entity->declaration.type = type_error_type;
+ entity->declaration.implicit = true;
+ } else if (kind == ENTITY_TYPEDEF) {
+ entity->typedefe.type = type_error_type;
+ entity->typedefe.builtin = true;
}
-
- return type;
+ if (kind != ENTITY_COMPOUND_MEMBER)
+ record_entity(entity, false);
+ return entity;
}
static void parse_declaration_specifiers(declaration_specifiers_t *specifiers)
{
type_t *type = NULL;
type_qualifiers_t qualifiers = TYPE_QUALIFIER_NONE;
- type_modifiers_t modifiers = TYPE_MODIFIER_NONE;
unsigned type_specifiers = 0;
bool newtype = false;
bool saw_error = false;
specifiers->source_position = token.source_position;
while (true) {
- specifiers->modifiers
- |= parse_attributes(&specifiers->gnu_attributes);
+ specifiers->attributes = parse_attributes(specifiers->attributes);
switch (token.type) {
/* storage class */
MATCH_STORAGE_CLASS(T_register, STORAGE_CLASS_REGISTER)
case T__declspec:
- next_token();
- expect('(', end_error);
- add_anchor_token(')');
- parse_microsoft_extended_decl_modifier(specifiers);
- rem_anchor_token(')');
- expect(')', end_error);
+ specifiers->attributes
+ = parse_microsoft_extended_decl_modifier(specifiers->attributes);
break;
case T___thread:
break;
char const* wrong;
- case STORAGE_CLASS_AUTO: wrong = "auto"; goto wrong_thread_stoarge_class;
- case STORAGE_CLASS_REGISTER: wrong = "register"; goto wrong_thread_stoarge_class;
- case STORAGE_CLASS_TYPEDEF: wrong = "typedef"; goto wrong_thread_stoarge_class;
-wrong_thread_stoarge_class:
+ case STORAGE_CLASS_AUTO: wrong = "auto"; goto wrong_thread_storage_class;
+ case STORAGE_CLASS_REGISTER: wrong = "register"; goto wrong_thread_storage_class;
+ case STORAGE_CLASS_TYPEDEF: wrong = "typedef"; goto wrong_thread_storage_class;
+wrong_thread_storage_class:
errorf(HERE, "'__thread' used with '%s'", wrong);
break;
}
MATCH_SPECIFIER(T_void, SPECIFIER_VOID, "void");
MATCH_SPECIFIER(T_wchar_t, SPECIFIER_WCHAR_T, "wchar_t");
- case T__forceinline:
- /* only in microsoft mode */
- specifiers->modifiers |= DM_FORCEINLINE;
- /* FALLTHROUGH */
-
case T_inline:
next_token();
specifiers->is_inline = true;
break;
+#if 0
+ case T__forceinline:
+ next_token();
+ specifiers->modifiers |= DM_FORCEINLINE;
+ break;
+#endif
+
case T_long:
if (type_specifiers & SPECIFIER_LONG_LONG) {
errorf(HERE, "multiple type specifiers given");
next_token();
break;
- case T_struct: {
+#define CHECK_DOUBLE_TYPE() \
+ if ( type != NULL) \
+ errorf(HERE, "multiple data types in declaration specifiers");
+
+ case T_struct:
+ CHECK_DOUBLE_TYPE();
type = allocate_type_zero(TYPE_COMPOUND_STRUCT);
type->compound.compound = parse_compound_type_specifier(true);
- finish_struct_type(&type->compound);
break;
- }
- case T_union: {
+ case T_union:
+ CHECK_DOUBLE_TYPE();
type = allocate_type_zero(TYPE_COMPOUND_UNION);
type->compound.compound = parse_compound_type_specifier(false);
- if (type->compound.compound->modifiers & DM_TRANSPARENT_UNION)
- modifiers |= TYPE_MODIFIER_TRANSPARENT_UNION;
- finish_union_type(&type->compound);
break;
- }
case T_enum:
+ CHECK_DOUBLE_TYPE();
type = parse_enum_specifier();
break;
case T___typeof__:
+ CHECK_DOUBLE_TYPE();
type = parse_typeof();
break;
case T___builtin_va_list:
+ CHECK_DOUBLE_TYPE();
type = duplicate_type(type_valist);
next_token();
break;
}
}
- type_t *const typedef_type = get_typedef_type(token.v.symbol);
+ type_t *const typedef_type = get_typedef_type(token.symbol);
if (typedef_type == NULL) {
/* Be somewhat resilient to typos like 'vodi f()' at the beginning of a
* declaration, so it doesn't generate 'implicit int' followed by more
errorf(HERE, "%K does not name a type", &token);
entity_t *entity =
- create_error_entity(token.v.symbol, ENTITY_TYPEDEF);
+ create_error_entity(token.symbol, ENTITY_TYPEDEF);
type = allocate_type_zero(TYPE_TYPEDEF);
type->typedeft.typedefe = &entity->typedefe;
}
finish_specifiers:
- specifiers->modifiers
- |= parse_attributes(&specifiers->gnu_attributes);
+ specifiers->attributes = parse_attributes(specifiers->attributes);
in_gcc_extension = old_gcc_extension;
type = allocate_type_zero(TYPE_ATOMIC);
type->atomic.akind = atomic_type;
}
- type->base.alignment = get_atomic_type_alignment(atomic_type);
- unsigned const size = get_atomic_type_size(atomic_type);
- type->base.size =
- type_specifiers & SPECIFIER_COMPLEX ? size * 2 : size;
newtype = true;
} else if (type_specifiers != 0) {
errorf(HERE, "multiple datatypes in declaration");
}
/* FIXME: check type qualifiers here */
-
- if (specifiers->modifiers & DM_TRANSPARENT_UNION)
- modifiers |= TYPE_MODIFIER_TRANSPARENT_UNION;
type->base.qualifiers = qualifiers;
- type->base.modifiers = modifiers;
if (newtype) {
type = identify_new_type(type);
type = typehash_insert(type);
}
- type = handle_type_attributes(specifiers->gnu_attributes, type);
+ if (specifiers->attributes != NULL)
+ type = handle_type_attributes(specifiers->attributes, type);
specifiers->type = type;
return;
end_error:
specifiers->type = type_error_type;
- return;
}
static type_qualifiers_t parse_type_qualifiers(void)
entity_t *entity = allocate_entity_zero(ENTITY_PARAMETER);
entity->base.source_position = token.source_position;
entity->base.namespc = NAMESPACE_NORMAL;
- entity->base.symbol = token.v.symbol;
+ entity->base.symbol = token.symbol;
/* a K&R parameter has no type, yet */
next_token();
if (scope != NULL)
append_entity(scope, entity);
-
- if (token.type != ',') {
- break;
- }
- next_token();
- } while (token.type == T_IDENTIFIER);
+ } while (next_if(',') && token.type == T_IDENTIFIER);
}
static entity_t *parse_parameter(void)
{
/* func(void) is not a parameter */
if (token.type == T_IDENTIFIER) {
- entity_t const *const entity = get_entity(token.v.symbol, NAMESPACE_NORMAL);
+ entity_t const *const entity = get_entity(token.symbol, NAMESPACE_NORMAL);
+ if (entity == NULL)
+ return true;
if (entity->kind != ENTITY_TYPEDEF)
return true;
if (skip_typeref(entity->typedefe.type) != type_void)
int saved_comma_state = save_and_reset_anchor_state(',');
if (token.type == T_IDENTIFIER &&
- !is_typedef_symbol(token.v.symbol)) {
+ !is_typedef_symbol(token.symbol)) {
token_type_t la1_type = (token_type_t)look_ahead(1)->type;
if (la1_type == ',' || la1_type == ')') {
- type->kr_style_parameters = true;
- type->unspecified_parameters = true;
+ type->kr_style_parameters = true;
parse_identifier_list(scope);
goto parameters_finished;
}
if (has_parameters()) {
function_parameter_t **anchor = &type->parameters;
- for (;;) {
+ do {
switch (token.type) {
case T_DOTDOTDOT:
next_token();
default:
goto parameters_finished;
}
- if (token.type != ',') {
- goto parameters_finished;
- }
- next_token();
- }
+ } while (next_if(','));
}
typedef struct parsed_pointer_t {
construct_type_base_t base;
type_qualifiers_t type_qualifiers;
- variable_t *base_variable; /**< MS __based extension. */
+ variable_t *base_variable; /**< MS __based extension. */
} parsed_pointer_t;
typedef struct parsed_reference_t {
parsed_array_t array;
};
-static construct_type_t *parse_pointer_declarator(variable_t *base_variable)
+static construct_type_t *allocate_declarator_zero(construct_type_kind_t const kind, size_t const size)
+{
+ construct_type_t *const cons = obstack_alloc(&temp_obst, size);
+ memset(cons, 0, size);
+ cons->kind = kind;
+ return cons;
+}
+
+/* §6.7.5.1 */
+static construct_type_t *parse_pointer_declarator(void)
{
eat('*');
- construct_type_t *cons = obstack_alloc(&temp_obst, sizeof(cons->pointer));
- parsed_pointer_t *pointer = &cons->pointer;
- memset(pointer, 0, sizeof(*pointer));
- cons->kind = CONSTRUCT_POINTER;
- pointer->type_qualifiers = parse_type_qualifiers();
- pointer->base_variable = base_variable;
+ construct_type_t *const cons = allocate_declarator_zero(CONSTRUCT_POINTER, sizeof(parsed_pointer_t));
+ cons->pointer.type_qualifiers = parse_type_qualifiers();
+ //cons->pointer.base_variable = base_variable;
return cons;
}
+/* ISO/IEC 14882:1998(E) §8.3.2 */
static construct_type_t *parse_reference_declarator(void)
{
eat('&');
- construct_type_t *cons = obstack_alloc(&temp_obst, sizeof(cons->reference));
- parsed_reference_t *reference = &cons->reference;
- memset(reference, 0, sizeof(*reference));
- cons->kind = CONSTRUCT_REFERENCE;
+ if (!(c_mode & _CXX))
+ errorf(HERE, "references are only available for C++");
+
+ construct_type_t *const cons = allocate_declarator_zero(CONSTRUCT_REFERENCE, sizeof(parsed_reference_t));
return cons;
}
+/* §6.7.5.2 */
static construct_type_t *parse_array_declarator(void)
{
eat('[');
add_anchor_token(']');
- construct_type_t *cons = obstack_alloc(&temp_obst, sizeof(cons->array));
- parsed_array_t *array = &cons->array;
- memset(array, 0, sizeof(*array));
- cons->kind = CONSTRUCT_ARRAY;
+ construct_type_t *const cons = allocate_declarator_zero(CONSTRUCT_ARRAY, sizeof(parsed_array_t));
+ parsed_array_t *const array = &cons->array;
- if (token.type == T_static) {
- array->is_static = true;
- next_token();
- }
+ bool is_static = next_if(T_static);
type_qualifiers_t type_qualifiers = parse_type_qualifiers();
- if (type_qualifiers != 0) {
- if (token.type == T_static) {
- array->is_static = true;
- next_token();
- }
- }
+
+ if (!is_static)
+ is_static = next_if(T_static);
+
array->type_qualifiers = type_qualifiers;
+ array->is_static = is_static;
+ expression_t *size = NULL;
if (token.type == '*' && look_ahead(1)->type == ']') {
array->is_variable = true;
next_token();
} else if (token.type != ']') {
- expression_t *const size = parse_assignment_expression();
+ size = parse_assignment_expression();
+
+ /* §6.7.5.2:1 Array size must have integer type */
+ type_t *const orig_type = size->base.type;
+ type_t *const type = skip_typeref(orig_type);
+ if (!is_type_integer(type) && is_type_valid(type)) {
+ errorf(&size->base.source_position,
+ "array size '%E' must have integer type but has type '%T'",
+ size, orig_type);
+ }
+
array->size = size;
mark_vars_read(size, NULL);
}
+ if (is_static && size == NULL)
+ errorf(HERE, "static array parameters require a size");
+
rem_anchor_token(']');
expect(']', end_error);
return cons;
}
-static construct_type_t *parse_function_declarator(scope_t *scope,
- decl_modifiers_t modifiers)
+/* §6.7.5.3 */
+static construct_type_t *parse_function_declarator(scope_t *scope)
{
type_t *type = allocate_type_zero(TYPE_FUNCTION);
function_type_t *ftype = &type->function;
- ftype->linkage = current_linkage;
-
- switch (modifiers & (DM_CDECL | DM_STDCALL | DM_FASTCALL | DM_THISCALL)) {
- case DM_NONE: break;
- case DM_CDECL: ftype->calling_convention = CC_CDECL; break;
- case DM_STDCALL: ftype->calling_convention = CC_STDCALL; break;
- case DM_FASTCALL: ftype->calling_convention = CC_FASTCALL; break;
- case DM_THISCALL: ftype->calling_convention = CC_THISCALL; break;
-
- default:
- errorf(HERE, "multiple calling conventions in declaration");
- break;
- }
+ ftype->linkage = current_linkage;
+ ftype->calling_convention = CC_DEFAULT;
parse_parameters(ftype, scope);
- construct_type_t *cons = obstack_alloc(&temp_obst, sizeof(cons->function));
- construct_function_type_t *function = &cons->function;
- memset(function, 0, sizeof(*function));
- cons->kind = CONSTRUCT_FUNCTION;
- function->function_type = type;
+ construct_type_t *const cons = allocate_declarator_zero(CONSTRUCT_FUNCTION, sizeof(construct_function_type_t));
+ cons->function.function_type = type;
return cons;
}
typedef struct parse_declarator_env_t {
+ bool may_be_abstract : 1;
+ bool must_be_abstract : 1;
decl_modifiers_t modifiers;
symbol_t *symbol;
source_position_t source_position;
scope_t parameters;
+ attribute_t *attributes;
} parse_declarator_env_t;
-static construct_type_t *parse_inner_declarator(parse_declarator_env_t *env,
- bool may_be_abstract)
+/* §6.7.5 */
+static construct_type_t *parse_inner_declarator(parse_declarator_env_t *env)
{
/* construct a single linked list of construct_type_t's which describe
* how to construct the final declarator type */
construct_type_t *first = NULL;
construct_type_t **anchor = &first;
- gnu_attribute_t *attributes = NULL;
- decl_modifiers_t modifiers = parse_attributes(&attributes);
+ env->attributes = parse_attributes(env->attributes);
for (;;) {
construct_type_t *type;
- variable_t *based = NULL; /* MS __based extension */
+ //variable_t *based = NULL; /* MS __based extension */
switch (token.type) {
case '&':
- if (!(c_mode & _CXX))
- errorf(HERE, "references are only available for C++");
type = parse_reference_declarator();
break;
case T__based: {
- source_position_t const pos = *HERE;
- next_token();
- expect('(', end_error);
- add_anchor_token(')');
- based = parse_microsoft_based();
- rem_anchor_token(')');
- expect(')', end_error);
- if (token.type != '*') {
- if (token.type == T__based) {
- errorf(&pos, "__based type modifier specified more than once");
- } else if (warning.other) {
- warningf(&pos,
- "__based does not precede a pointer declarator, ignored");
- }
- continue;
- }
+ panic("based not supported anymore");
/* FALLTHROUGH */
}
case '*':
- type = parse_pointer_declarator(based);
+ type = parse_pointer_declarator();
break;
default:
anchor = &type->base.next;
/* TODO: find out if this is correct */
- modifiers |= parse_attributes(&attributes);
- }
-ptr_operator_end:
-
- if (env != NULL) {
- modifiers |= env->modifiers;
- env->modifiers = modifiers;
+ env->attributes = parse_attributes(env->attributes);
}
+ptr_operator_end: ;
construct_type_t *inner_types = NULL;
switch (token.type) {
case T_IDENTIFIER:
- if (env == NULL) {
+ if (env->must_be_abstract) {
errorf(HERE, "no identifier expected in typename");
} else {
- env->symbol = token.v.symbol;
+ env->symbol = token.symbol;
env->source_position = token.source_position;
}
next_token();
if (look_ahead(1)->type != ')') {
next_token();
add_anchor_token(')');
- inner_types = parse_inner_declarator(env, may_be_abstract);
+ inner_types = parse_inner_declarator(env);
if (inner_types != NULL) {
/* All later declarators only modify the return type */
- env = NULL;
+ env->must_be_abstract = true;
}
rem_anchor_token(')');
expect(')', end_error);
+ } else if (!env->may_be_abstract) {
+ errorf(HERE, "declarator must have a name");
+ goto error_out;
}
break;
default:
- if (may_be_abstract)
+ if (env->may_be_abstract)
break;
parse_error_expected("while parsing declarator", T_IDENTIFIER, '(', NULL);
+error_out:
eat_until_anchor();
return NULL;
}
switch (token.type) {
case '(': {
scope_t *scope = NULL;
- if (env != NULL)
+ if (!env->must_be_abstract) {
scope = &env->parameters;
+ }
- type = parse_function_declarator(scope, modifiers);
+ type = parse_function_declarator(scope);
break;
}
case '[':
return NULL;
}
-static void parse_declaration_attributes(entity_t *entity)
-{
- gnu_attribute_t *attributes = NULL;
- decl_modifiers_t modifiers = parse_attributes(&attributes);
-
- if (entity == NULL)
- return;
-
- type_t *type;
- if (entity->kind == ENTITY_TYPEDEF) {
- modifiers |= entity->typedefe.modifiers;
- type = entity->typedefe.type;
- } else {
- assert(is_declaration(entity));
- modifiers |= entity->declaration.modifiers;
- type = entity->declaration.type;
- }
- if (type == NULL)
- return;
-
- gnu_attribute_t *attribute = attributes;
- for ( ; attribute != NULL; attribute = attribute->next) {
- if (attribute->invalid)
- continue;
-
- if (attribute->kind == GNU_AK_MODE) {
- type = handle_attribute_mode(attribute, type);
- } else if (attribute->kind == GNU_AK_ALIGNED) {
- int alignment = 32; /* TODO: fill in maximum usefull alignment for target machine */
- if (attribute->has_arguments)
- alignment = attribute->u.argument;
-
- if (entity->kind == ENTITY_TYPEDEF) {
- type_t *copy = duplicate_type(type);
- copy->base.alignment = attribute->u.argument;
- type = identify_new_type(copy);
- } else if(entity->kind == ENTITY_VARIABLE) {
- entity->variable.alignment = alignment;
- } else if(entity->kind == ENTITY_COMPOUND_MEMBER) {
- entity->compound_member.alignment = alignment;
- }
- }
- }
-
- type_modifiers_t type_modifiers = type->base.modifiers;
- if (modifiers & DM_TRANSPARENT_UNION)
- type_modifiers |= TYPE_MODIFIER_TRANSPARENT_UNION;
-
- if (type->base.modifiers != type_modifiers) {
- type_t *copy = duplicate_type(type);
- copy->base.modifiers = type_modifiers;
- type = identify_new_type(copy);
- }
-
- if (entity->kind == ENTITY_TYPEDEF) {
- entity->typedefe.type = type;
- entity->typedefe.modifiers = modifiers;
- } else {
- entity->declaration.type = type;
- entity->declaration.modifiers = modifiers;
- }
-}
-
-static type_t *construct_declarator_type(construct_type_t *construct_list, type_t *type)
+static type_t *construct_declarator_type(construct_type_t *construct_list,
+ type_t *type)
{
construct_type_t *iter = construct_list;
for (; iter != NULL; iter = iter->base.next) {
array_type->array.size_expression = size_expression;
if (size_expression != NULL) {
- if (is_constant_expression(size_expression)) {
- long const size = fold_constant(size_expression);
- array_type->array.size = size;
- array_type->array.size_constant = true;
- /* §6.7.5.2:1 If the expression is a constant expression, it shall
- * have a value greater than zero. */
- if (size <= 0) {
- if (size < 0 || !GNU_MODE) {
- errorf(&size_expression->base.source_position,
- "size of array must be greater than zero");
- } else if (warning.other) {
- warningf(&size_expression->base.source_position,
- "zero length arrays are a GCC extension");
+ switch (is_constant_expression(size_expression)) {
+ case EXPR_CLASS_CONSTANT: {
+ long const size = fold_constant_to_int(size_expression);
+ array_type->array.size = size;
+ array_type->array.size_constant = true;
+ /* §6.7.5.2:1 If the expression is a constant expression, it shall
+ * have a value greater than zero. */
+ if (size <= 0) {
+ if (size < 0 || !GNU_MODE) {
+ errorf(&size_expression->base.source_position,
+ "size of array must be greater than zero");
+ } else if (warning.other) {
+ warningf(&size_expression->base.source_position,
+ "zero length arrays are a GCC extension");
+ }
}
+ break;
}
- } else {
- array_type->array.is_vla = true;
+
+ case EXPR_CLASS_VARIABLE:
+ array_type->array.is_vla = true;
+ break;
+
+ case EXPR_CLASS_ERROR:
+ break;
}
}
{
parse_declarator_env_t env;
memset(&env, 0, sizeof(env));
- env.modifiers = specifiers->modifiers;
+ env.may_be_abstract = (flags & DECL_MAY_BE_ABSTRACT) != 0;
- construct_type_t *construct_type =
- parse_inner_declarator(&env, (flags & DECL_MAY_BE_ABSTRACT) != 0);
+ construct_type_t *construct_type = parse_inner_declarator(&env);
type_t *orig_type =
construct_declarator_type(construct_type, specifiers->type);
type_t *type = skip_typeref(orig_type);
obstack_free(&temp_obst, construct_type);
}
+ attribute_t *attributes = parse_attributes(env.attributes);
+ /* append (shared) specifier attribute behind attributes of this
+ * declarator */
+ attribute_t **anchor = &attributes;
+ while (*anchor != NULL)
+ anchor = &(*anchor)->next;
+ *anchor = specifiers->attributes;
+
entity_t *entity;
if (specifiers->storage_class == STORAGE_CLASS_TYPEDEF) {
entity = allocate_entity_zero(ENTITY_TYPEDEF);
entity->function.parameters = env.parameters;
if (env.symbol != NULL) {
+ /* this needs fixes for C++ */
+ bool in_function_scope = current_function != NULL;
+
if (specifiers->thread_local || (
specifiers->storage_class != STORAGE_CLASS_EXTERN &&
specifiers->storage_class != STORAGE_CLASS_NONE &&
- specifiers->storage_class != STORAGE_CLASS_STATIC
+ (in_function_scope || specifiers->storage_class != STORAGE_CLASS_STATIC)
)) {
errorf(&env.source_position,
"invalid storage class for function '%Y'", env.symbol);
} else {
entity = allocate_entity_zero(ENTITY_VARIABLE);
- entity->variable.get_property_sym = specifiers->get_property_sym;
- entity->variable.put_property_sym = specifiers->put_property_sym;
-
entity->variable.thread_local = specifiers->thread_local;
if (env.symbol != NULL) {
} else {
entity->base.source_position = specifiers->source_position;
}
- entity->base.namespc = NAMESPACE_NORMAL;
- entity->declaration.type = orig_type;
- entity->declaration.modifiers = env.modifiers;
- entity->declaration.deprecated_string = specifiers->deprecated_string;
+ entity->base.namespc = NAMESPACE_NORMAL;
+ entity->declaration.type = orig_type;
+ entity->declaration.alignment = get_type_alignment(orig_type);
+ entity->declaration.modifiers = env.modifiers;
+ entity->declaration.attributes = attributes;
storage_class_t storage_class = specifiers->storage_class;
entity->declaration.declared_storage_class = storage_class;
- if (storage_class == STORAGE_CLASS_NONE && current_scope != file_scope)
+ if (storage_class == STORAGE_CLASS_NONE && current_function != NULL)
storage_class = STORAGE_CLASS_AUTO;
entity->declaration.storage_class = storage_class;
}
- parse_declaration_attributes(entity);
+ if (attributes != NULL) {
+ handle_entity_attributes(attributes, entity);
+ }
return entity;
}
static type_t *parse_abstract_declarator(type_t *base_type)
{
- construct_type_t *construct_type = parse_inner_declarator(NULL, 1);
+ parse_declarator_env_t env;
+ memset(&env, 0, sizeof(env));
+ env.may_be_abstract = true;
+ env.must_be_abstract = true;
+
+ construct_type_t *construct_type = parse_inner_declarator(&env);
type_t *result = construct_declarator_type(construct_type, base_type);
if (construct_type != NULL) {
obstack_free(&temp_obst, construct_type);
}
+ result = handle_type_attributes(env.attributes, result);
return result;
}
* @param decl the declaration to check
* @param type the function type of the declaration
*/
-static void check_type_of_main(const entity_t *entity)
+static void check_main(const entity_t *entity)
{
const source_position_t *pos = &entity->base.source_position;
if (entity->kind != ENTITY_FUNCTION) {
return false;
}
+static bool contains_attribute(const attribute_t *list, const attribute_t *attr)
+{
+ for (const attribute_t *tattr = list; tattr != NULL; tattr = tattr->next) {
+ if (attributes_equal(tattr, attr))
+ return true;
+ }
+ return false;
+}
+
+/**
+ * test wether new_list contains any attributes not included in old_list
+ */
+static bool has_new_attributes(const attribute_t *old_list,
+ const attribute_t *new_list)
+{
+ for (const attribute_t *attr = new_list; attr != NULL; attr = attr->next) {
+ if (!contains_attribute(old_list, attr))
+ return true;
+ }
+ return false;
+}
+
+/**
+ * Merge in attributes from an attribute list (probably from a previous
+ * declaration with the same name). Warning: destroys the old structure
+ * of the attribute list - don't reuse attributes after this call.
+ */
+static void merge_in_attributes(declaration_t *decl, attribute_t *attributes)
+{
+ attribute_t *next;
+ for (attribute_t *attr = attributes; attr != NULL; attr = next) {
+ next = attr->next;
+ if (contains_attribute(decl->attributes, attr))
+ continue;
+
+ /* move attribute to new declarations attributes list */
+ attr->next = decl->attributes;
+ decl->attributes = attr;
+ }
+}
+
/**
* record entities for the NAMESPACE_NORMAL, and produce error messages/warnings
* for various problems that occur for multiple definitions
*/
-static entity_t *record_entity(entity_t *entity, const bool is_definition)
+entity_t *record_entity(entity_t *entity, const bool is_definition)
{
const symbol_t *const symbol = entity->base.symbol;
const namespace_tag_t namespc = (namespace_tag_t)entity->base.namespc;
if (warning.main && current_scope == file_scope
&& is_sym_main(symbol)) {
- check_type_of_main(entity);
+ check_main(entity);
}
}
prev_decl->storage_class = decl->storage_class;
prev_decl->declared_storage_class = decl->declared_storage_class;
prev_decl->modifiers = decl->modifiers;
- prev_decl->deprecated_string = decl->deprecated_string;
return previous_entity;
}
&previous_entity->base.source_position);
} else {
unsigned old_storage_class = prev_decl->storage_class;
+
if (warning.redundant_decls &&
is_definition &&
!prev_decl->used &&
if (old_storage_class == STORAGE_CLASS_EXTERN &&
new_storage_class == STORAGE_CLASS_EXTERN) {
-warn_redundant_declaration:
- if (!is_definition &&
+
+warn_redundant_declaration: ;
+ bool has_new_attrs
+ = has_new_attributes(prev_decl->attributes,
+ decl->attributes);
+ if (has_new_attrs) {
+ merge_in_attributes(decl, prev_decl->attributes);
+ } else if (!is_definition &&
warning.redundant_decls &&
is_type_valid(prev_type) &&
strcmp(previous_entity->base.source_position.input_name,
"<builtin>") != 0) {
warningf(pos,
- "redundant declaration for '%Y' (declared %P)",
- symbol, &previous_entity->base.source_position);
+ "redundant declaration for '%Y' (declared %P)",
+ symbol, &previous_entity->base.source_position);
}
} else if (current_function == NULL) {
if (old_storage_class != STORAGE_CLASS_STATIC &&
new_storage_class == STORAGE_CLASS_STATIC) {
errorf(pos,
- "static declaration of '%Y' follows non-static declaration (declared %P)",
- symbol, &previous_entity->base.source_position);
+ "static declaration of '%Y' follows non-static declaration (declared %P)",
+ symbol, &previous_entity->base.source_position);
} else if (old_storage_class == STORAGE_CLASS_EXTERN) {
prev_decl->storage_class = STORAGE_CLASS_NONE;
prev_decl->declared_storage_class = STORAGE_CLASS_NONE;
TYPE_QUALIFIERS
return true;
case T_IDENTIFIER:
- return is_typedef_symbol(token->v.symbol);
+ return is_typedef_symbol(token->symbol);
case T___extension__:
STORAGE_CLASSES
check_variable_type_complete(entity);
- if (token.type != ',')
+ if (!next_if(','))
break;
- eat(',');
add_anchor_token('=');
ndeclaration = parse_declarator(specifiers, flags);
}
}
+/* §6.5.2.2:6 */
static type_t *get_default_promoted_type(type_t *orig_type)
{
type_t *result = orig_type;
if (!type->function.kr_style_parameters)
return;
-
add_anchor_token('{');
/* push function parameters */
function_parameter_t *parameters = NULL;
function_parameter_t **anchor = ¶meters;
+ /* did we have an earlier prototype? */
+ entity_t *proto_type = get_entity(entity->base.symbol, NAMESPACE_NORMAL);
+ if (proto_type != NULL && proto_type->kind != ENTITY_FUNCTION)
+ proto_type = NULL;
+
+ function_parameter_t *proto_parameter = NULL;
+ if (proto_type != NULL) {
+ type_t *proto_type_type = proto_type->declaration.type;
+ proto_parameter = proto_type_type->function.parameters;
+ /* If a K&R function definition has a variadic prototype earlier, then
+ * make the function definition variadic, too. This should conform to
+ * §6.7.5.3:15 and §6.9.1:8. */
+ new_type->function.variadic = proto_type_type->function.variadic;
+ } else {
+ /* §6.9.1.7: A K&R style parameter list does NOT act as a function
+ * prototype */
+ new_type->function.unspecified_parameters = true;
+ }
+
+ bool need_incompatible_warning = false;
parameter = entity->function.parameters.entities;
- for (; parameter != NULL; parameter = parameter->base.next) {
+ for (; parameter != NULL; parameter = parameter->base.next,
+ proto_parameter =
+ proto_parameter == NULL ? NULL : proto_parameter->next) {
if (parameter->kind != ENTITY_PARAMETER)
continue;
if (strict_mode) {
errorf(HERE, "no type specified for function parameter '%Y'",
parameter->base.symbol);
+ parameter_type = type_error_type;
} else {
if (warning.implicit_int) {
warningf(HERE, "no type specified for function parameter '%Y', using 'int'",
parameter->base.symbol);
}
- parameter_type = type_int;
- parameter->declaration.type = parameter_type;
+ parameter_type = type_int;
}
+ parameter->declaration.type = parameter_type;
}
semantic_parameter_incomplete(parameter);
- parameter_type = parameter->declaration.type;
- /*
- * we need the default promoted types for the function type
- */
- parameter_type = get_default_promoted_type(parameter_type);
+ /* we need the default promoted types for the function type */
+ type_t *not_promoted = parameter_type;
+ parameter_type = get_default_promoted_type(parameter_type);
- function_parameter_t *const parameter =
- allocate_parameter(parameter_type);
+ /* gcc special: if the type of the prototype matches the unpromoted
+ * type don't promote */
+ if (!strict_mode && proto_parameter != NULL) {
+ type_t *proto_p_type = skip_typeref(proto_parameter->type);
+ type_t *promo_skip = skip_typeref(parameter_type);
+ type_t *param_skip = skip_typeref(not_promoted);
+ if (!types_compatible(proto_p_type, promo_skip)
+ && types_compatible(proto_p_type, param_skip)) {
+ /* don't promote */
+ need_incompatible_warning = true;
+ parameter_type = not_promoted;
+ }
+ }
+ function_parameter_t *const parameter
+ = allocate_parameter(parameter_type);
*anchor = parameter;
anchor = ¶meter->next;
}
- /* §6.9.1.7: A K&R style parameter list does NOT act as a function
- * prototype */
- new_type->function.parameters = parameters;
- new_type->function.unspecified_parameters = true;
-
+ new_type->function.parameters = parameters;
new_type = identify_new_type(new_type);
+ if (warning.other && need_incompatible_warning) {
+ type_t *proto_type_type = proto_type->declaration.type;
+ warningf(HERE,
+ "declaration '%#T' is incompatible with '%#T' (declared %P)",
+ proto_type_type, proto_type->base.symbol,
+ new_type, entity->base.symbol,
+ &proto_type->base.source_position);
+ }
+
entity->declaration.type = new_type;
rem_anchor_token('{');
static int determine_truth(expression_t const* const cond)
{
return
- !is_constant_expression(cond) ? 0 :
- fold_constant(cond) != 0 ? 1 :
+ is_constant_expression(cond) != EXPR_CLASS_CONSTANT ? 0 :
+ fold_constant_to_bool(cond) ? 1 :
-1;
}
case EXPR_REFERENCE:
case EXPR_REFERENCE_ENUM_VALUE:
- case EXPR_CONST:
- case EXPR_CHARACTER_CONSTANT:
- case EXPR_WIDE_CHARACTER_CONSTANT:
+ EXPR_LITERAL_CASES
case EXPR_STRING_LITERAL:
case EXPR_WIDE_STRING_LITERAL:
case EXPR_COMPOUND_LITERAL: // TODO descend into initialisers
case EXPR_VA_ARG:
return expression_returns(expr->va_arge.ap);
+ case EXPR_VA_COPY:
+ return expression_returns(expr->va_copye.src);
+
EXPR_UNARY_CASES_MANDATORY
return expression_returns(expr->unary.value);
if (!expression_returns(expr))
return;
- if (is_constant_expression(expr)) {
- long const val = fold_constant(expr);
+ if (is_constant_expression(expr) == EXPR_CLASS_CONSTANT) {
+ long const val = fold_constant_to_int(expr);
case_label_statement_t * defaults = NULL;
for (case_label_statement_t *i = switchs->first_case; i != NULL; i = i->next) {
if (i->expression == NULL) {
break;
}
- case STATEMENT_CONTINUE: {
- statement_t *parent = stmt;
- for (;;) {
+ case STATEMENT_CONTINUE:
+ for (statement_t *parent = stmt;;) {
parent = parent->base.parent;
if (parent == NULL) /* continue not within loop */
return;
default: break;
}
}
- }
- case STATEMENT_BREAK: {
- statement_t *parent = stmt;
- for (;;) {
+ case STATEMENT_BREAK:
+ for (statement_t *parent = stmt;;) {
parent = parent->base.parent;
if (parent == NULL) /* break not within loop/switch */
return;
}
found_break_parent:
break;
- }
case STATEMENT_GOTO:
if (stmt->gotos.expression) {
/* §6.7.5.3:14 a function definition with () means no
* parameters (and not unspecified parameters) */
if (type->function.unspecified_parameters &&
- type->function.parameters == NULL &&
- !type->function.kr_style_parameters) {
+ type->function.parameters == NULL) {
type_t *copy = duplicate_type(type);
copy->function.unspecified_parameters = false;
type = identify_new_type(copy);
/* 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_t*) function;
current_parent = NULL;
goto_first = NULL;
assert(current_parent == NULL);
assert(current_function == function);
+ assert(current_entity == (entity_t*) function);
+ current_entity = old_current_entity;
current_function = old_current_function;
label_pop_to(label_stack_top);
}
type_t *skipped_type = skip_typeref(base_type);
if (!is_type_integer(skipped_type)) {
errorf(HERE, "bitfield base type '%T' is not an integer type",
- base_type);
+ base_type);
bit_size = 0;
} else {
- bit_size = skipped_type->base.size * 8;
+ bit_size = get_type_size(base_type) * 8;
}
- if (is_constant_expression(size)) {
- long v = fold_constant(size);
+ if (is_constant_expression(size) == EXPR_CLASS_CONSTANT) {
+ long v = fold_constant_to_int(size);
+ const symbol_t *user_symbol = symbol == NULL ? sym_anonymous : symbol;
if (v < 0) {
- errorf(source_position, "negative width in bit-field '%Y'", symbol);
- } else if (v == 0) {
- errorf(source_position, "zero width for bit-field '%Y'", symbol);
+ errorf(source_position, "negative width in bit-field '%Y'",
+ user_symbol);
+ } else if (v == 0 && symbol != NULL) {
+ errorf(source_position, "zero width for bit-field '%Y'",
+ user_symbol);
} else if (bit_size > 0 && (il_size_t)v > bit_size) {
- errorf(source_position, "width of '%Y' exceeds its type", symbol);
+ errorf(source_position, "width of '%Y' exceeds its type",
+ user_symbol);
} else {
type->bitfield.bit_size = v;
}
if (iter->base.symbol == symbol) {
return iter;
} else if (iter->base.symbol == NULL) {
+ /* search in anonymous structs and unions */
type_t *type = skip_typeref(iter->declaration.type);
if (is_type_compound(type)) {
- entity_t *result
- = find_compound_entry(type->compound.compound, symbol);
- if (result != NULL)
- return result;
+ if (find_compound_entry(type->compound.compound, symbol)
+ != NULL)
+ return iter;
}
continue;
}
return NULL;
}
-static void parse_compound_declarators(compound_t *compound,
- const declaration_specifiers_t *specifiers)
+static void check_deprecated(const source_position_t *source_position,
+ const entity_t *entity)
{
- while (true) {
- entity_t *entity;
+ if (!warning.deprecated_declarations)
+ return;
+ if (!is_declaration(entity))
+ return;
+ if ((entity->declaration.modifiers & DM_DEPRECATED) == 0)
+ return;
- if (token.type == ':') {
- source_position_t source_position = *HERE;
- next_token();
+ char const *const prefix = get_entity_kind_name(entity->kind);
+ const char *deprecated_string
+ = get_deprecated_string(entity->declaration.attributes);
+ if (deprecated_string != NULL) {
+ warningf(source_position, "%s '%Y' is deprecated (declared %P): \"%s\"",
+ prefix, entity->base.symbol, &entity->base.source_position,
+ deprecated_string);
+ } else {
+ warningf(source_position, "%s '%Y' is deprecated (declared %P)", prefix,
+ entity->base.symbol, &entity->base.source_position);
+ }
+}
- type_t *base_type = specifiers->type;
- expression_t *size = parse_constant_expression();
- type_t *type = make_bitfield_type(base_type, size,
- &source_position, sym_anonymous);
+static expression_t *create_select(const source_position_t *pos,
+ expression_t *addr,
+ type_qualifiers_t qualifiers,
+ entity_t *entry)
+{
+ assert(entry->kind == ENTITY_COMPOUND_MEMBER);
- entity = allocate_entity_zero(ENTITY_COMPOUND_MEMBER);
- entity->base.namespc = NAMESPACE_NORMAL;
- entity->base.source_position = source_position;
- entity->declaration.declared_storage_class = STORAGE_CLASS_NONE;
- entity->declaration.storage_class = STORAGE_CLASS_NONE;
- entity->declaration.modifiers = specifiers->modifiers;
- entity->declaration.type = type;
- append_entity(&compound->members, entity);
- } else {
- entity = parse_declarator(specifiers,
- DECL_MAY_BE_ABSTRACT | DECL_CREATE_COMPOUND_MEMBER);
- if (entity->kind == ENTITY_TYPEDEF) {
- errorf(&entity->base.source_position,
- "typedef not allowed as compound member");
+ check_deprecated(pos, entry);
+
+ expression_t *select = allocate_expression_zero(EXPR_SELECT);
+ select->select.compound = addr;
+ select->select.compound_entry = entry;
+
+ type_t *entry_type = entry->declaration.type;
+ type_t *res_type = get_qualified_type(entry_type, qualifiers);
+
+ /* we always do the auto-type conversions; the & and sizeof parser contains
+ * code to revert this! */
+ select->base.type = automatic_type_conversion(res_type);
+ if (res_type->kind == TYPE_BITFIELD) {
+ select->base.type = res_type->bitfield.base_type;
+ }
+
+ return select;
+}
+
+/**
+ * Find entry with symbol in compound. Search anonymous structs and unions and
+ * creates implicit select expressions for them.
+ * Returns the adress for the innermost compound.
+ */
+static expression_t *find_create_select(const source_position_t *pos,
+ expression_t *addr,
+ type_qualifiers_t qualifiers,
+ compound_t *compound, symbol_t *symbol)
+{
+ entity_t *iter = compound->members.entities;
+ for (; iter != NULL; iter = iter->base.next) {
+ if (iter->kind != ENTITY_COMPOUND_MEMBER)
+ continue;
+
+ symbol_t *iter_symbol = iter->base.symbol;
+ if (iter_symbol == NULL) {
+ type_t *type = iter->declaration.type;
+ if (type->kind != TYPE_COMPOUND_STRUCT
+ && type->kind != TYPE_COMPOUND_UNION)
+ continue;
+
+ compound_t *sub_compound = type->compound.compound;
+
+ if (find_compound_entry(sub_compound, symbol) == NULL)
+ continue;
+
+ expression_t *sub_addr = create_select(pos, addr, qualifiers, iter);
+ sub_addr->base.source_position = *pos;
+ sub_addr->select.implicit = true;
+ return find_create_select(pos, sub_addr, qualifiers, sub_compound,
+ symbol);
+ }
+
+ if (iter_symbol == symbol) {
+ return create_select(pos, addr, qualifiers, iter);
+ }
+ }
+
+ return NULL;
+}
+
+static void parse_compound_declarators(compound_t *compound,
+ const declaration_specifiers_t *specifiers)
+{
+ do {
+ entity_t *entity;
+
+ if (token.type == ':') {
+ source_position_t source_position = *HERE;
+ next_token();
+
+ type_t *base_type = specifiers->type;
+ expression_t *size = parse_constant_expression();
+
+ type_t *type = make_bitfield_type(base_type, size,
+ &source_position, NULL);
+
+ attribute_t *attributes = parse_attributes(NULL);
+ attribute_t **anchor = &attributes;
+ while (*anchor != NULL)
+ anchor = &(*anchor)->next;
+ *anchor = specifiers->attributes;
+
+ entity = allocate_entity_zero(ENTITY_COMPOUND_MEMBER);
+ entity->base.namespc = NAMESPACE_NORMAL;
+ entity->base.source_position = source_position;
+ entity->declaration.declared_storage_class = STORAGE_CLASS_NONE;
+ entity->declaration.storage_class = STORAGE_CLASS_NONE;
+ entity->declaration.type = type;
+ entity->declaration.attributes = attributes;
+
+ if (attributes != NULL) {
+ handle_entity_attributes(attributes, entity);
+ }
+ append_entity(&compound->members, entity);
+ } else {
+ entity = parse_declarator(specifiers,
+ DECL_MAY_BE_ABSTRACT | DECL_CREATE_COMPOUND_MEMBER);
+ if (entity->kind == ENTITY_TYPEDEF) {
+ errorf(&entity->base.source_position,
+ "typedef not allowed as compound member");
} else {
assert(entity->kind == ENTITY_COMPOUND_MEMBER);
type_t *type = entity->declaration.type;
type_t *bitfield_type = make_bitfield_type(type, size,
&source_position, entity->base.symbol);
+
+ attribute_t *attributes = parse_attributes(NULL);
entity->declaration.type = bitfield_type;
+ handle_entity_attributes(attributes, entity);
} else {
type_t *orig_type = entity->declaration.type;
type_t *type = skip_typeref(orig_type);
if (is_type_function(type)) {
errorf(&entity->base.source_position,
- "compound member '%Y' must not have function type '%T'",
+ "compound member '%Y' must not have function type '%T'",
entity->base.symbol, orig_type);
} else if (is_type_incomplete(type)) {
/* §6.7.2.1:16 flexible array member */
token.type != ';' ||
look_ahead(1)->type != '}') {
errorf(&entity->base.source_position,
- "compound member '%Y' has incomplete type '%T'",
+ "compound member '%Y' has incomplete type '%T'",
entity->base.symbol, orig_type);
}
}
append_entity(&compound->members, entity);
}
}
-
- if (token.type != ',')
- break;
- next_token();
- }
+ } while (next_if(','));
expect(';', end_error);
end_error:
declaration_specifiers_t specifiers;
memset(&specifiers, 0, sizeof(specifiers));
parse_declaration_specifiers(&specifiers);
- if (specifiers.storage_class != STORAGE_CLASS_NONE ||
- specifiers.thread_local) {
+ if (specifiers.storage_class != STORAGE_CLASS_NONE
+ || specifiers.thread_local) {
/* TODO: improve error message, user does probably not know what a
* storage class is...
*/
- errorf(HERE, "typename may not have a storage class");
+ errorf(HERE, "typename must not have a storage class");
}
type_t *result = parse_abstract_declarator(specifiers.type);
return create_invalid_expression();
}
+static type_t *get_string_type(void)
+{
+ return warning.write_strings ? type_const_char_ptr : type_char_ptr;
+}
+
+static type_t *get_wide_string_type(void)
+{
+ return warning.write_strings ? type_const_wchar_t_ptr : type_wchar_t_ptr;
+}
+
/**
* Parse a string constant.
*/
-static expression_t *parse_string_const(void)
+static expression_t *parse_string_literal(void)
{
- wide_string_t wres;
- if (token.type == T_STRING_LITERAL) {
- string_t res = token.v.string;
+ source_position_t begin = token.source_position;
+ string_t res = token.literal;
+ bool is_wide = (token.type == T_WIDE_STRING_LITERAL);
+
+ next_token();
+ while (token.type == T_STRING_LITERAL
+ || token.type == T_WIDE_STRING_LITERAL) {
+ warn_string_concat(&token.source_position);
+ res = concat_strings(&res, &token.literal);
next_token();
- while (token.type == T_STRING_LITERAL) {
- res = concat_strings(&res, &token.v.string);
- next_token();
- }
- if (token.type != T_WIDE_STRING_LITERAL) {
- expression_t *const cnst = allocate_expression_zero(EXPR_STRING_LITERAL);
- /* note: that we use type_char_ptr here, which is already the
- * automatic converted type. revert_automatic_type_conversion
- * will construct the array type */
- cnst->base.type = warning.write_strings ? type_const_char_ptr : type_char_ptr;
- cnst->string.value = res;
- return cnst;
- }
+ is_wide |= token.type == T_WIDE_STRING_LITERAL;
+ }
- wres = concat_string_wide_string(&res, &token.v.wide_string);
+ expression_t *literal;
+ if (is_wide) {
+ literal = allocate_expression_zero(EXPR_WIDE_STRING_LITERAL);
+ literal->base.type = get_wide_string_type();
} else {
- wres = token.v.wide_string;
+ literal = allocate_expression_zero(EXPR_STRING_LITERAL);
+ literal->base.type = get_string_type();
}
+ literal->base.source_position = begin;
+ literal->literal.value = res;
+
+ return literal;
+}
+
+/**
+ * Parse a boolean constant.
+ */
+static expression_t *parse_boolean_literal(bool value)
+{
+ expression_t *literal = allocate_expression_zero(EXPR_LITERAL_BOOLEAN);
+ literal->base.source_position = token.source_position;
+ literal->base.type = type_bool;
+ literal->literal.value.begin = value ? "true" : "false";
+ literal->literal.value.size = value ? 4 : 5;
+
next_token();
+ return literal;
+}
- for (;;) {
- switch (token.type) {
- case T_WIDE_STRING_LITERAL:
- wres = concat_wide_strings(&wres, &token.v.wide_string);
- break;
+static void warn_traditional_suffix(void)
+{
+ if (!warning.traditional)
+ return;
+ warningf(&token.source_position, "traditional C rejects the '%Y' suffix",
+ token.symbol);
+}
- case T_STRING_LITERAL:
- wres = concat_wide_string_string(&wres, &token.v.string);
- break;
+static void check_integer_suffix(void)
+{
+ symbol_t *suffix = token.symbol;
+ if (suffix == NULL)
+ return;
- default: {
- expression_t *const cnst = allocate_expression_zero(EXPR_WIDE_STRING_LITERAL);
- cnst->base.type = warning.write_strings ? type_const_wchar_t_ptr : type_wchar_t_ptr;
- cnst->wide_string.value = wres;
- return cnst;
+ bool not_traditional = false;
+ const char *c = suffix->string;
+ if (*c == 'l' || *c == 'L') {
+ ++c;
+ if (*c == *(c-1)) {
+ not_traditional = true;
+ ++c;
+ if (*c == 'u' || *c == 'U') {
+ ++c;
}
+ } else if (*c == 'u' || *c == 'U') {
+ not_traditional = true;
+ ++c;
}
- next_token();
+ } else if (*c == 'u' || *c == 'U') {
+ not_traditional = true;
+ ++c;
+ if (*c == 'l' || *c == 'L') {
+ ++c;
+ if (*c == *(c-1)) {
+ ++c;
+ }
+ }
+ }
+ if (*c != '\0') {
+ errorf(&token.source_position,
+ "invalid suffix '%s' on integer constant", suffix->string);
+ } else if (not_traditional) {
+ warn_traditional_suffix();
}
}
-/**
- * Parse a boolean constant.
- */
-static expression_t *parse_bool_const(bool value)
+static type_t *check_floatingpoint_suffix(void)
{
- expression_t *cnst = allocate_expression_zero(EXPR_CONST);
- cnst->base.type = type_bool;
- cnst->conste.v.int_value = value;
+ symbol_t *suffix = token.symbol;
+ type_t *type = type_double;
+ if (suffix == NULL)
+ return type;
- next_token();
+ bool not_traditional = false;
+ const char *c = suffix->string;
+ if (*c == 'f' || *c == 'F') {
+ ++c;
+ type = type_float;
+ } else if (*c == 'l' || *c == 'L') {
+ ++c;
+ type = type_long_double;
+ }
+ if (*c != '\0') {
+ errorf(&token.source_position,
+ "invalid suffix '%s' on floatingpoint constant", suffix->string);
+ } else if (not_traditional) {
+ warn_traditional_suffix();
+ }
- return cnst;
+ return type;
}
/**
* Parse an integer constant.
*/
-static expression_t *parse_int_const(void)
+static expression_t *parse_number_literal(void)
{
- expression_t *cnst = allocate_expression_zero(EXPR_CONST);
- cnst->base.type = token.datatype;
- cnst->conste.v.int_value = token.v.intvalue;
+ expression_kind_t kind;
+ type_t *type;
+
+ switch (token.type) {
+ case T_INTEGER:
+ kind = EXPR_LITERAL_INTEGER;
+ 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");
+ }
+ expression_t *literal = allocate_expression_zero(kind);
+ literal->base.source_position = token.source_position;
+ literal->base.type = type;
+ literal->literal.value = token.literal;
+ literal->literal.suffix = token.symbol;
next_token();
- return cnst;
+ /* integer type depends on the size of the number and the size
+ * representable by the types. The backend/codegeneration has to determine
+ * that
+ */
+ determine_literal_type(&literal->literal);
+ return literal;
}
/**
*/
static expression_t *parse_character_constant(void)
{
- expression_t *cnst = allocate_expression_zero(EXPR_CHARACTER_CONSTANT);
- cnst->base.type = token.datatype;
- cnst->conste.v.character = token.v.string;
+ expression_t *literal = allocate_expression_zero(EXPR_LITERAL_CHARACTER);
+ literal->base.source_position = token.source_position;
+ literal->base.type = c_mode & _CXX ? type_char : type_int;
+ literal->literal.value = token.literal;
- if (cnst->conste.v.character.size != 1) {
- if (!GNU_MODE) {
+ size_t len = literal->literal.value.size;
+ if (len != 1) {
+ if (!GNU_MODE && !(c_mode & _C99)) {
errorf(HERE, "more than 1 character in character constant");
} else if (warning.multichar) {
+ literal->base.type = type_int;
warningf(HERE, "multi-character character constant");
}
}
- next_token();
- return cnst;
+ next_token();
+ return literal;
}
/**
*/
static expression_t *parse_wide_character_constant(void)
{
- expression_t *cnst = allocate_expression_zero(EXPR_WIDE_CHARACTER_CONSTANT);
- cnst->base.type = token.datatype;
- cnst->conste.v.wide_character = token.v.wide_string;
+ expression_t *literal = allocate_expression_zero(EXPR_LITERAL_WIDE_CHARACTER);
+ literal->base.source_position = token.source_position;
+ literal->base.type = type_int;
+ literal->literal.value = token.literal;
- if (cnst->conste.v.wide_character.size != 1) {
- if (!GNU_MODE) {
- errorf(HERE, "more than 1 character in character constant");
- } else if (warning.multichar) {
- warningf(HERE, "multi-character character constant");
- }
+ size_t len = wstrlen(&literal->literal.value);
+ if (len != 1) {
+ warningf(HERE, "multi-character character constant");
}
- next_token();
-
- return cnst;
-}
-
-/**
- * Parse a float constant.
- */
-static expression_t *parse_float_const(void)
-{
- expression_t *cnst = allocate_expression_zero(EXPR_CONST);
- cnst->base.type = token.datatype;
- cnst->conste.v.float_value = token.v.floatvalue;
next_token();
-
- return cnst;
+ return literal;
}
static entity_t *create_implicit_function(symbol_t *symbol,
entity->base.symbol = symbol;
entity->base.source_position = *source_position;
- bool strict_prototypes_old = warning.strict_prototypes;
- warning.strict_prototypes = false;
- record_entity(entity, false);
- warning.strict_prototypes = strict_prototypes_old;
+ if (current_scope != NULL) {
+ bool strict_prototypes_old = warning.strict_prototypes;
+ warning.strict_prototypes = false;
+ record_entity(entity, false);
+ warning.strict_prototypes = strict_prototypes_old;
+ }
return entity;
}
-/**
- * Creates a return_type (func)(argument_type) function type if not
- * already exists.
- */
-static type_t *make_function_2_type(type_t *return_type, type_t *argument_type1,
- type_t *argument_type2)
-{
- function_parameter_t *const parameter2 = allocate_parameter(argument_type2);
- function_parameter_t *const parameter1 = allocate_parameter(argument_type1);
- parameter1->next = parameter2;
-
- type_t *type = allocate_type_zero(TYPE_FUNCTION);
- type->function.return_type = return_type;
- type->function.parameters = parameter1;
-
- return identify_new_type(type);
-}
-
-/**
- * Creates a return_type (func)(argument_type) function type if not
- * already exists.
- *
- * @param return_type the return type
- * @param argument_type the argument type
- */
-static type_t *make_function_1_type(type_t *return_type, type_t *argument_type)
-{
- function_parameter_t *const parameter = allocate_parameter(argument_type);
-
- type_t *type = allocate_type_zero(TYPE_FUNCTION);
- type->function.return_type = return_type;
- type->function.parameters = parameter;
-
- return identify_new_type(type);
-}
-
-static type_t *make_function_1_type_variadic(type_t *return_type, type_t *argument_type)
-{
- type_t *res = make_function_1_type(return_type, argument_type);
- res->function.variadic = 1;
- return res;
-}
-
-/**
- * Creates a return_type (func)(void) function type if not
- * already exists.
- *
- * @param return_type the return type
- */
-static type_t *make_function_0_type(type_t *return_type)
-{
- type_t *type = allocate_type_zero(TYPE_FUNCTION);
- type->function.return_type = return_type;
- type->function.parameters = NULL;
-
- return identify_new_type(type);
-}
-
-/**
- * Creates a NO_RETURN return_type (func)(void) function type if not
- * already exists.
- *
- * @param return_type the return type
- */
-static type_t *make_function_0_type_noreturn(type_t *return_type)
-{
- type_t *type = allocate_type_zero(TYPE_FUNCTION);
- type->function.return_type = return_type;
- type->function.parameters = NULL;
- type->function.base.modifiers |= DM_NORETURN;
- return type;
-
- return identify_new_type(type);
-}
-
/**
* Performs automatic type cast as described in §6.3.2.1.
*
type_t *revert_automatic_type_conversion(const expression_t *expression)
{
switch (expression->kind) {
- case EXPR_REFERENCE: {
- entity_t *entity = expression->reference.entity;
- if (is_declaration(entity)) {
- return entity->declaration.type;
- } else if (entity->kind == ENTITY_ENUM_VALUE) {
- return entity->enum_value.enum_type;
- } else {
- panic("no declaration or enum in reference");
- }
+ case EXPR_REFERENCE: {
+ entity_t *entity = expression->reference.entity;
+ if (is_declaration(entity)) {
+ return entity->declaration.type;
+ } else if (entity->kind == ENTITY_ENUM_VALUE) {
+ return entity->enum_value.enum_type;
+ } else {
+ panic("no declaration or enum in reference");
}
+ }
- case EXPR_SELECT: {
- entity_t *entity = expression->select.compound_entry;
- assert(is_declaration(entity));
- type_t *type = entity->declaration.type;
- return get_qualified_type(type,
- expression->base.type->base.qualifiers);
- }
+ case EXPR_SELECT: {
+ entity_t *entity = expression->select.compound_entry;
+ assert(is_declaration(entity));
+ type_t *type = entity->declaration.type;
+ return get_qualified_type(type,
+ expression->base.type->base.qualifiers);
+ }
- case EXPR_UNARY_DEREFERENCE: {
- const expression_t *const value = expression->unary.value;
- type_t *const type = skip_typeref(value->base.type);
- if (!is_type_pointer(type))
- return type_error_type;
- return type->pointer.points_to;
- }
+ case EXPR_UNARY_DEREFERENCE: {
+ const expression_t *const value = expression->unary.value;
+ type_t *const type = skip_typeref(value->base.type);
+ if (!is_type_pointer(type))
+ return type_error_type;
+ return type->pointer.points_to;
+ }
- case EXPR_ARRAY_ACCESS: {
- const expression_t *array_ref = expression->array_access.array_ref;
- type_t *type_left = skip_typeref(array_ref->base.type);
- if (!is_type_pointer(type_left))
- return type_error_type;
- return type_left->pointer.points_to;
- }
+ case EXPR_ARRAY_ACCESS: {
+ const expression_t *array_ref = expression->array_access.array_ref;
+ type_t *type_left = skip_typeref(array_ref->base.type);
+ if (!is_type_pointer(type_left))
+ return type_error_type;
+ return type_left->pointer.points_to;
+ }
- case EXPR_STRING_LITERAL: {
- size_t size = expression->string.value.size;
- return make_array_type(type_char, size, TYPE_QUALIFIER_NONE);
- }
+ case EXPR_STRING_LITERAL: {
+ size_t size = expression->string_literal.value.size;
+ return make_array_type(type_char, size, TYPE_QUALIFIER_NONE);
+ }
- case EXPR_WIDE_STRING_LITERAL: {
- size_t size = expression->wide_string.value.size;
- return make_array_type(type_wchar_t, size, TYPE_QUALIFIER_NONE);
- }
+ case EXPR_WIDE_STRING_LITERAL: {
+ size_t size = wstrlen(&expression->string_literal.value);
+ return make_array_type(type_wchar_t, size, TYPE_QUALIFIER_NONE);
+ }
- case EXPR_COMPOUND_LITERAL:
- return expression->compound_literal.type;
+ case EXPR_COMPOUND_LITERAL:
+ return expression->compound_literal.type;
- default:
- return expression->base.type;
+ default:
+ break;
}
+ return expression->base.type;
}
-static expression_t *parse_reference(void)
+/**
+ * Find an entity matching a symbol in a scope.
+ * Uses current scope if scope is NULL
+ */
+static entity_t *lookup_entity(const scope_t *scope, symbol_t *symbol,
+ namespace_tag_t namespc)
+{
+ if (scope == NULL) {
+ return get_entity(symbol, namespc);
+ }
+
+ /* we should optimize here, if scope grows above a certain size we should
+ construct a hashmap here... */
+ entity_t *entity = scope->entities;
+ for ( ; entity != NULL; entity = entity->base.next) {
+ if (entity->base.symbol == symbol && entity->base.namespc == namespc)
+ break;
+ }
+
+ return entity;
+}
+
+static entity_t *parse_qualified_identifier(void)
{
- symbol_t *const symbol = token.v.symbol;
+ /* namespace containing the symbol */
+ symbol_t *symbol;
+ source_position_t pos;
+ const scope_t *lookup_scope = NULL;
- entity_t *entity = get_entity(symbol, NAMESPACE_NORMAL);
+ if (next_if(T_COLONCOLON))
+ lookup_scope = &unit->scope;
+
+ entity_t *entity;
+ while (true) {
+ if (token.type != T_IDENTIFIER) {
+ parse_error_expected("while parsing identifier", T_IDENTIFIER, NULL);
+ return create_error_entity(sym_anonymous, ENTITY_VARIABLE);
+ }
+ symbol = token.symbol;
+ pos = *HERE;
+ next_token();
+
+ /* lookup entity */
+ entity = lookup_entity(lookup_scope, symbol, NAMESPACE_NORMAL);
+
+ if (!next_if(T_COLONCOLON))
+ break;
+
+ switch (entity->kind) {
+ case ENTITY_NAMESPACE:
+ lookup_scope = &entity->namespacee.members;
+ break;
+ case ENTITY_STRUCT:
+ case ENTITY_UNION:
+ case ENTITY_CLASS:
+ lookup_scope = &entity->compound.members;
+ break;
+ default:
+ errorf(&pos, "'%Y' must be a namespace, class, struct or union (but is a %s)",
+ symbol, get_entity_kind_name(entity->kind));
+ goto end_error;
+ }
+ }
if (entity == NULL) {
- if (!strict_mode && look_ahead(1)->type == '(') {
+ if (!strict_mode && token.type == '(') {
/* an implicitly declared function */
if (warning.error_implicit_function_declaration) {
- errorf(HERE, "implicit declaration of function '%Y'", symbol);
+ errorf(&pos, "implicit declaration of function '%Y'", symbol);
} else if (warning.implicit_function_declaration) {
- warningf(HERE, "implicit declaration of function '%Y'", symbol);
+ warningf(&pos, "implicit declaration of function '%Y'", symbol);
}
- entity = create_implicit_function(symbol, HERE);
+ entity = create_implicit_function(symbol, &pos);
} else {
- errorf(HERE, "unknown identifier '%Y' found.", symbol);
+ errorf(&pos, "unknown identifier '%Y' found.", symbol);
entity = create_error_entity(symbol, ENTITY_VARIABLE);
}
}
- type_t *orig_type;
+ return entity;
+end_error:
+ /* skip further qualifications */
+ while (next_if(T_IDENTIFIER) && next_if(T_COLONCOLON)) {}
+
+ return create_error_entity(sym_anonymous, ENTITY_VARIABLE);
+}
+
+static expression_t *parse_reference(void)
+{
+ entity_t *entity = parse_qualified_identifier();
+
+ type_t *orig_type;
if (is_declaration(entity)) {
orig_type = entity->declaration.type;
} else if (entity->kind == ENTITY_ENUM_VALUE) {
orig_type = entity->enum_value.enum_type;
- } else if (entity->kind == ENTITY_TYPEDEF) {
- errorf(HERE, "encountered typedef name '%Y' while parsing expression",
- symbol);
- next_token();
- return create_invalid_expression();
} else {
panic("expected declaration or enum value in reference");
}
}
if (entity->base.parent_scope != file_scope
- && entity->base.parent_scope->depth < current_function->parameters.depth
- && is_type_valid(orig_type) && !is_type_function(orig_type)) {
+ && (current_function != NULL
+ && entity->base.parent_scope->depth < current_function->parameters.depth)
+ && (entity->kind == ENTITY_VARIABLE || entity->kind == ENTITY_PARAMETER)) {
if (entity->kind == ENTITY_VARIABLE) {
/* access of a variable from an outer function */
entity->variable.address_taken = true;
current_function->need_closure = true;
}
- /* check for deprecated functions */
- if (warning.deprecated_declarations
- && is_declaration(entity)
- && entity->declaration.modifiers & DM_DEPRECATED) {
- declaration_t *declaration = &entity->declaration;
-
- char const *const prefix = entity->kind == ENTITY_FUNCTION ?
- "function" : "variable";
-
- if (declaration->deprecated_string != NULL) {
- warningf(HERE, "%s '%Y' is deprecated (declared %P): \"%s\"",
- prefix, entity->base.symbol, &entity->base.source_position,
- declaration->deprecated_string);
- } else {
- warningf(HERE, "%s '%Y' is deprecated (declared %P)", prefix,
- entity->base.symbol, &entity->base.source_position);
- }
- }
+ check_deprecated(HERE, entity);
if (warning.init_self && entity == current_init_decl && !in_type_prop
&& entity->kind == ENTITY_VARIABLE) {
entity->declaration.type, entity->base.symbol);
}
- next_token();
return expression;
}
expression_t *cast = allocate_expression_zero(EXPR_UNARY_CAST);
cast->base.source_position = source_position;
- expression_t *value = parse_sub_expression(PREC_CAST);
+ expression_t *value = parse_subexpression(PREC_CAST);
cast->base.type = type;
cast->unary.value = value;
TYPE_SPECIFIERS
return parse_cast();
case T_IDENTIFIER:
- if (is_typedef_symbol(token.v.symbol)) {
+ if (is_typedef_symbol(token.symbol)) {
return parse_cast();
}
}
T_IDENTIFIER, NULL);
return NULL;
}
- result->symbol = token.v.symbol;
+ result->symbol = token.symbol;
next_token();
designator_t *last_designator = result;
while (true) {
- if (token.type == '.') {
- next_token();
+ if (next_if('.')) {
if (token.type != T_IDENTIFIER) {
parse_error_expected("while parsing member designator",
T_IDENTIFIER, NULL);
}
designator_t *designator = allocate_ast_zero(sizeof(result[0]));
designator->source_position = *HERE;
- designator->symbol = token.v.symbol;
+ designator->symbol = token.symbol;
next_token();
last_designator->next = designator;
last_designator = designator;
continue;
}
- if (token.type == '[') {
- next_token();
+ if (next_if('[')) {
add_anchor_token(']');
designator_t *designator = allocate_ast_zero(sizeof(result[0]));
designator->source_position = *HERE;
expression_t *const expr = parse_assignment_expression();
if (expr->kind == EXPR_REFERENCE) {
entity_t *const entity = expr->reference.entity;
- if (entity->base.parent_scope != ¤t_function->parameters
- || entity->base.next != NULL
- || entity->kind != ENTITY_PARAMETER) {
+ if (!current_function->base.type->function.variadic) {
+ errorf(&expr->base.source_position,
+ "'va_start' used in non-variadic function");
+ } else if (entity->base.parent_scope != ¤t_function->parameters ||
+ entity->base.next != NULL ||
+ entity->kind != ENTITY_PARAMETER) {
errorf(&expr->base.source_position,
"second argument of 'va_start' must be last parameter of the current function");
} else {
}
/**
- * Parses a _builtin_va_arg() expression.
+ * Parses a __builtin_va_arg() expression.
*/
static expression_t *parse_va_arg(void)
{
eat(T___builtin_va_arg);
expect('(', end_error);
- expression->va_arge.ap = parse_assignment_expression();
+ call_argument_t ap;
+ ap.expression = parse_assignment_expression();
+ expression->va_arge.ap = ap.expression;
+ check_call_argument(type_valist, &ap, 1);
+
expect(',', end_error);
expression->base.type = parse_typename();
expect(')', end_error);
return create_invalid_expression();
}
+/**
+ * Parses a __builtin_va_copy() expression.
+ */
+static expression_t *parse_va_copy(void)
+{
+ expression_t *expression = allocate_expression_zero(EXPR_VA_COPY);
+
+ eat(T___builtin_va_copy);
+
+ expect('(', end_error);
+ expression_t *dst = parse_assignment_expression();
+ assign_error_t error = semantic_assign(type_valist, dst);
+ report_assign_error(error, type_valist, dst, "call argument 1",
+ &dst->base.source_position);
+ expression->va_copye.dst = dst;
+
+ expect(',', end_error);
+
+ call_argument_t src;
+ src.expression = parse_assignment_expression();
+ check_call_argument(type_valist, &src, 2);
+ expression->va_copye.src = src.expression;
+ expect(')', end_error);
+
+ return expression;
+end_error:
+ return create_invalid_expression();
+}
+
/**
* Parses a __builtin_constant_p() expression.
*/
expression->binary.right = parse_assignment_expression();
expect(')', end_error);
- type_t *const orig_type_left = expression->binary.left->base.type;
- type_t *const orig_type_right = expression->binary.right->base.type;
-
- type_t *const type_left = skip_typeref(orig_type_left);
- type_t *const type_right = skip_typeref(orig_type_right);
- if (!is_type_float(type_left) && !is_type_float(type_right)) {
- if (is_type_valid(type_left) && is_type_valid(type_right)) {
- type_error_incompatible("invalid operands in comparison",
- &expression->base.source_position, orig_type_left, orig_type_right);
- }
- } else {
- semantic_comparison(&expression->binary);
- }
-
- return expression;
-end_error:
- return create_invalid_expression();
-}
-
-#if 0
-/**
- * Parses a __builtin_expect(, end_error) expression.
- */
-static expression_t *parse_builtin_expect(void, end_error)
-{
- expression_t *expression
- = allocate_expression_zero(EXPR_BINARY_BUILTIN_EXPECT);
-
- eat(T___builtin_expect);
-
- expect('(', end_error);
- expression->binary.left = parse_assignment_expression();
- expect(',', end_error);
- expression->binary.right = parse_constant_expression();
- expect(')', end_error);
-
- expression->base.type = expression->binary.left->base.type;
+ type_t *const orig_type_left = expression->binary.left->base.type;
+ type_t *const orig_type_right = expression->binary.right->base.type;
+
+ type_t *const type_left = skip_typeref(orig_type_left);
+ type_t *const type_right = skip_typeref(orig_type_right);
+ if (!is_type_float(type_left) && !is_type_float(type_right)) {
+ if (is_type_valid(type_left) && is_type_valid(type_right)) {
+ type_error_incompatible("invalid operands in comparison",
+ &expression->base.source_position, orig_type_left, orig_type_right);
+ }
+ } else {
+ semantic_comparison(&expression->binary);
+ }
return expression;
end_error:
return create_invalid_expression();
}
-#endif
/**
* Parses a MS assume() expression.
parse_error_expected("while parsing label address", T_IDENTIFIER, NULL);
goto end_error;
}
- symbol_t *symbol = token.v.symbol;
+ symbol_t *symbol = token.symbol;
next_token();
label_t *label = get_label(symbol);
static expression_t *parse_noop_expression(void)
{
/* the result is a (int)0 */
- expression_t *cnst = allocate_expression_zero(EXPR_CONST);
- cnst->base.type = type_int;
- cnst->conste.v.int_value = 0;
- cnst->conste.is_ms_noop = true;
+ expression_t *literal = allocate_expression_zero(EXPR_LITERAL_MS_NOOP);
+ literal->base.type = type_int;
+ literal->base.source_position = token.source_position;
+ literal->literal.value.begin = "__noop";
+ literal->literal.value.size = 6;
eat(T___noop);
add_anchor_token(')');
add_anchor_token(',');
- if (token.type != ')') {
- while (true) {
- (void)parse_assignment_expression();
- if (token.type != ',')
- break;
- next_token();
- }
- }
+ if (token.type != ')') do {
+ (void)parse_assignment_expression();
+ } while (next_if(','));
}
rem_anchor_token(',');
rem_anchor_token(')');
expect(')', end_error);
end_error:
- return cnst;
+ return literal;
}
/**
static expression_t *parse_primary_expression(void)
{
switch (token.type) {
- case T_false: return parse_bool_const(false);
- case T_true: return parse_bool_const(true);
- case T_INTEGER: return parse_int_const();
- case T_CHARACTER_CONSTANT: return parse_character_constant();
- case T_WIDE_CHARACTER_CONSTANT: return parse_wide_character_constant();
- 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___FUNCSIG__: return parse_funcsig_keyword();
- case T___FUNCDNAME__: return parse_funcdname_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_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_types_compatible_p: return parse_builtin_types_compatible();
- case T__assume: return parse_assume();
- case T_ANDAND:
- if (GNU_MODE)
- return parse_label_address();
- break;
+ 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_CHARACTER_CONSTANT: return parse_character_constant();
+ case T_WIDE_CHARACTER_CONSTANT: return parse_wide_character_constant();
+ case T_STRING_LITERAL:
+ case T_WIDE_STRING_LITERAL: return parse_string_literal();
+ case T___FUNCTION__:
+ case T___func__: return parse_function_keyword();
+ case T___PRETTY_FUNCTION__: return parse_pretty_function_keyword();
+ case T___FUNCSIG__: return parse_funcsig_keyword();
+ case T___FUNCDNAME__: return parse_funcdname_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_va_copy: return parse_va_copy();
+ 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_types_compatible_p: return parse_builtin_types_compatible();
+ case T__assume: return parse_assume();
+ case T_ANDAND:
+ if (GNU_MODE)
+ return parse_label_address();
+ break;
- case '(': return parse_parenthesized_expression();
- case T___noop: return parse_noop_expression();
+ case '(': return parse_parenthesized_expression();
+ case T___noop: return parse_noop_expression();
+
+ /* Gracefully handle type names while parsing expressions. */
+ case T_COLONCOLON:
+ return parse_reference();
+ case T_IDENTIFIER:
+ if (!is_typedef_symbol(token.symbol)) {
+ return parse_reference();
+ }
+ /* FALLTHROUGH */
+ TYPENAME_START {
+ source_position_t const pos = *HERE;
+ type_t const *const type = parse_typename();
+ errorf(&pos, "encountered type '%T' while parsing expression", type);
+ return create_invalid_expression();
+ }
}
errorf(HERE, "unexpected token %K, expected an expression", &token);
+ eat_until_anchor();
return create_invalid_expression();
}
goto typeprop_expression;
}
} else {
- expression = parse_sub_expression(PREC_UNARY);
+ expression = parse_subexpression(PREC_UNARY);
typeprop_expression:
tp_expression->typeprop.tp_expression = expression;
return parse_typeprop(EXPR_ALIGNOF);
}
-static expression_t *parse_select_expression(expression_t *compound)
+static expression_t *parse_select_expression(expression_t *addr)
{
- expression_t *select = allocate_expression_zero(EXPR_SELECT);
- select->select.compound = compound;
-
assert(token.type == '.' || token.type == T_MINUSGREATER);
- bool is_pointer = (token.type == T_MINUSGREATER);
+ bool select_left_arrow = (token.type == T_MINUSGREATER);
next_token();
if (token.type != T_IDENTIFIER) {
parse_error_expected("while parsing select", T_IDENTIFIER, NULL);
- return select;
+ return create_invalid_expression();
}
- symbol_t *symbol = token.v.symbol;
+ symbol_t *symbol = token.symbol;
next_token();
- type_t *const orig_type = compound->base.type;
+ type_t *const orig_type = addr->base.type;
type_t *const type = skip_typeref(orig_type);
type_t *type_left;
bool saw_error = false;
if (is_type_pointer(type)) {
- if (!is_pointer) {
+ if (!select_left_arrow) {
errorf(HERE,
"request for member '%Y' in something not a struct or union, but '%T'",
symbol, orig_type);
}
type_left = skip_typeref(type->pointer.points_to);
} else {
- if (is_pointer && is_type_valid(type)) {
+ if (select_left_arrow && is_type_valid(type)) {
errorf(HERE, "left hand side of '->' is not a pointer, but '%T'", orig_type);
saw_error = true;
}
type_left = type;
}
- entity_t *entry;
- if (type_left->kind == TYPE_COMPOUND_STRUCT ||
- type_left->kind == TYPE_COMPOUND_UNION) {
- compound_t *compound = type_left->compound.compound;
+ if (type_left->kind != TYPE_COMPOUND_STRUCT &&
+ type_left->kind != TYPE_COMPOUND_UNION) {
- if (!compound->complete) {
- errorf(HERE, "request for member '%Y' of incomplete type '%T'",
- symbol, type_left);
- goto create_error_entry;
- }
-
- entry = find_compound_entry(compound, symbol);
- if (entry == NULL) {
- errorf(HERE, "'%T' has no member named '%Y'", orig_type, symbol);
- goto create_error_entry;
- }
- } else {
if (is_type_valid(type_left) && !saw_error) {
errorf(HERE,
"request for member '%Y' in something not a struct or union, but '%T'",
symbol, type_left);
}
-create_error_entry:
- entry = create_error_entity(symbol, ENTITY_COMPOUND_MEMBER);
+ return create_invalid_expression();
}
- assert(is_declaration(entry));
- select->select.compound_entry = entry;
-
- type_t *entry_type = entry->declaration.type;
- type_t *res_type
- = get_qualified_type(entry_type, type_left->base.qualifiers);
+ compound_t *compound = type_left->compound.compound;
+ if (!compound->complete) {
+ errorf(HERE, "request for member '%Y' in incomplete type '%T'",
+ symbol, type_left);
+ return create_invalid_expression();
+ }
- /* we always do the auto-type conversions; the & and sizeof parser contains
- * code to revert this! */
- select->base.type = automatic_type_conversion(res_type);
+ type_qualifiers_t qualifiers = type_left->base.qualifiers;
+ expression_t *result
+ = find_create_select(HERE, addr, qualifiers, compound, symbol);
- type_t *skipped = skip_typeref(res_type);
- if (skipped->kind == TYPE_BITFIELD) {
- select->base.type = skipped->bitfield.base_type;
+ if (result == NULL) {
+ errorf(HERE, "'%T' has no member named '%Y'", orig_type, symbol);
+ return create_invalid_expression();
}
- return select;
+ return result;
}
-static void check_call_argument(const function_parameter_t *parameter,
+static void check_call_argument(type_t *expected_type,
call_argument_t *argument, unsigned pos)
{
- type_t *expected_type = parameter->type;
type_t *expected_type_skip = skip_typeref(expected_type);
assign_error_t error = ASSIGN_ERROR_INCOMPATIBLE;
expression_t *arg_expr = argument->expression;
/* handle transparent union gnu extension */
if (is_type_union(expected_type_skip)
- && (expected_type_skip->base.modifiers
- & TYPE_MODIFIER_TRANSPARENT_UNION)) {
+ && (get_type_modifiers(expected_type) & DM_TRANSPARENT_UNION)) {
compound_t *union_decl = expected_type_skip->compound.compound;
type_t *best_type = NULL;
entity_t *entry = union_decl->members.entities;
}
error = semantic_assign(expected_type, arg_expr);
- argument->expression = create_implicit_cast(argument->expression,
- expected_type);
+ argument->expression = create_implicit_cast(arg_expr, expected_type);
if (error != ASSIGN_SUCCESS) {
/* report exact scope in error messages (like "in argument 3") */
/* argument must be constant */
call_argument_t *argument = call->arguments;
- if (! is_constant_expression(argument->expression)) {
+ if (is_constant_expression(argument->expression) == EXPR_CLASS_VARIABLE) {
errorf(&call->base.source_position,
"argument of '%Y' must be a constant expression",
call->function->reference.entity->base.symbol);
}
break;
}
- case bk_gnu_builtin_prefetch: {
+ case bk_gnu_builtin_object_size:
+ if (call->arguments == NULL)
+ break;
+
+ call_argument_t *arg = call->arguments->next;
+ if (arg != NULL && is_constant_expression(arg->expression) == EXPR_CLASS_VARIABLE) {
+ errorf(&call->base.source_position,
+ "second argument of '%Y' must be a constant expression",
+ call->function->reference.entity->base.symbol);
+ }
+ break;
+ case bk_gnu_builtin_prefetch:
/* second and third argument must be constant if existent */
+ if (call->arguments == NULL)
+ break;
call_argument_t *rw = call->arguments->next;
call_argument_t *locality = NULL;
if (rw != NULL) {
- if (! is_constant_expression(rw->expression)) {
+ if (is_constant_expression(rw->expression) == EXPR_CLASS_VARIABLE) {
errorf(&call->base.source_position,
"second argument of '%Y' must be a constant expression",
call->function->reference.entity->base.symbol);
locality = rw->next;
}
if (locality != NULL) {
- if (! is_constant_expression(locality->expression)) {
+ if (is_constant_expression(locality->expression) == EXPR_CLASS_VARIABLE) {
errorf(&call->base.source_position,
"third argument of '%Y' must be a constant expression",
call->function->reference.entity->base.symbol);
locality = rw->next;
}
break;
- }
default:
break;
}
}
if (function_type == NULL && is_type_valid(type)) {
- errorf(HERE, "called object '%E' (type '%T') is not a pointer to a function", expression, orig_type);
+ errorf(HERE,
+ "called object '%E' (type '%T') is not a pointer to a function",
+ expression, orig_type);
}
/* parse arguments */
if (token.type != ')') {
call_argument_t **anchor = &call->arguments;
- for (;;) {
+ do {
call_argument_t *argument = allocate_ast_zero(sizeof(*argument));
argument->expression = parse_assignment_expression();
*anchor = argument;
anchor = &argument->next;
-
- if (token.type != ',')
- break;
- next_token();
- }
+ } while (next_if(','));
}
rem_anchor_token(',');
rem_anchor_token(')');
if (function_type == NULL)
return result;
+ /* check type and count of call arguments */
function_parameter_t *parameter = function_type->parameters;
call_argument_t *argument = call->arguments;
if (!function_type->unspecified_parameters) {
for (unsigned pos = 0; parameter != NULL && argument != NULL;
parameter = parameter->next, argument = argument->next) {
- check_call_argument(parameter, argument, ++pos);
+ check_call_argument(parameter->type, argument, ++pos);
}
if (parameter != NULL) {
}
}
- /* do default promotion */
+ /* do default promotion for other arguments */
for (; argument != NULL; argument = argument->next) {
type_t *type = argument->expression->base.type;
+ if (!is_type_object(skip_typeref(type))) {
+ errorf(&argument->expression->base.source_position,
+ "call argument '%E' must not be void", argument->expression);
+ }
type = get_default_promoted_type(type);
expect(':', end_error);
end_error:;
expression_t *false_expression =
- parse_sub_expression(c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL);
+ parse_subexpression(c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL);
type_t *const orig_true_type = true_expression->base.type;
type_t *const orig_false_type = false_expression->base.type;
} else if (is_type_arithmetic(true_type)
&& is_type_arithmetic(false_type)) {
result_type = semantic_arithmetic(true_type, false_type);
-
- true_expression = create_implicit_cast(true_expression, result_type);
- false_expression = create_implicit_cast(false_expression, result_type);
-
- conditional->true_expression = true_expression;
- conditional->false_expression = false_expression;
- conditional->base.type = result_type;
} else if (same_compound_type(true_type, false_type)) {
/* just take 1 of the 2 types */
result_type = true_type;
result_type = pointer_type;
} else {
if (is_type_valid(other_type)) {
- type_error_incompatible("while parsing conditional",
+ type_error_incompatible("while parsing conditional",
&expression->base.source_position, true_type, false_type);
}
result_type = type_error_type;
bool old_gcc_extension = in_gcc_extension;
in_gcc_extension = true;
- expression_t *expression = parse_sub_expression(PREC_UNARY);
+ expression_t *expression = parse_subexpression(PREC_UNARY);
in_gcc_extension = old_gcc_extension;
return expression;
}
eat(T_delete);
- if (token.type == '[') {
- next_token();
+ if (next_if('[')) {
result->kind = EXPR_UNARY_DELETE_ARRAY;
expect(']', end_error);
end_error:;
}
- expression_t *const value = parse_sub_expression(PREC_CAST);
+ expression_t *const value = parse_subexpression(PREC_CAST);
result->unary.value = value;
type_t *const type = skip_typeref(value->base.type);
return true;
default: {
- type_t *type = skip_typeref(expression->base.type);
- return
- /* ISO/IEC 14882:1998(E) §3.10:3 */
- is_type_reference(type) ||
- /* Claim it is an lvalue, if the type is invalid. There was a parse
- * error before, which maybe prevented properly recognizing it as
- * lvalue. */
- !is_type_valid(type);
+ type_t *type = skip_typeref(expression->base.type);
+ return
+ /* ISO/IEC 14882:1998(E) §3.10:3 */
+ is_type_reference(type) ||
+ /* Claim it is an lvalue, if the type is invalid. There was a parse
+ * error before, which maybe prevented properly recognizing it as
+ * lvalue. */
+ !is_type_valid(type);
}
}
}
expression_t *unary_expression \
= allocate_expression_zero(unexpression_type); \
eat(token_type); \
- unary_expression->unary.value = parse_sub_expression(PREC_UNARY); \
+ unary_expression->unary.value = parse_subexpression(PREC_UNARY); \
\
sfunc(&unary_expression->unary); \
\
expression_t const *const right = expression->right;
/* The type of the right operand can be different for /= */
- if (is_type_integer(right->base.type) &&
- is_constant_expression(right) &&
- fold_constant(right) == 0) {
+ if (is_type_integer(right->base.type) &&
+ is_constant_expression(right) == EXPR_CLASS_CONSTANT &&
+ !fold_constant_to_bool(right)) {
warningf(&expression->base.source_position, "division by zero");
}
}
"suggest parentheses around '%c' inside shift", op);
}
-static void semantic_shift_op(binary_expression_t *expression)
+static bool semantic_shift(binary_expression_t *expression)
{
expression_t *const left = expression->left;
expression_t *const right = expression->right;
errorf(&expression->base.source_position,
"operands of shift operation must have integer types");
}
- return;
+ return false;
+ }
+
+ type_left = promote_integer(type_left);
+
+ if (is_constant_expression(right) == EXPR_CLASS_CONSTANT) {
+ long count = fold_constant_to_int(right);
+ if (count < 0) {
+ warningf(&right->base.source_position,
+ "shift count must be non-negative");
+ } else if ((unsigned long)count >=
+ get_atomic_type_size(type_left->atomic.akind) * 8) {
+ warningf(&right->base.source_position,
+ "shift count must be less than type width");
+ }
}
+ type_right = promote_integer(type_right);
+ expression->right = create_implicit_cast(right, type_right);
+
+ return true;
+}
+
+static void semantic_shift_op(binary_expression_t *expression)
+{
+ expression_t *const left = expression->left;
+ expression_t *const right = expression->right;
+
+ if (!semantic_shift(expression))
+ return;
+
if (warning.parentheses) {
warn_addsub_in_shift(left);
warn_addsub_in_shift(right);
}
- type_left = promote_integer(type_left);
- type_right = promote_integer(type_right);
+ type_t *const orig_type_left = left->base.type;
+ type_t * type_left = skip_typeref(orig_type_left);
+ type_left = promote_integer(type_left);
expression->left = create_implicit_cast(left, type_left);
- expression->right = create_implicit_cast(right, type_right);
expression->base.type = type_left;
}
expr = expr->unary.value;
}
- if (expr->kind == EXPR_STRING_LITERAL ||
- expr->kind == EXPR_WIDE_STRING_LITERAL) {
+ if (expr->kind == EXPR_STRING_LITERAL
+ || expr->kind == EXPR_WIDE_STRING_LITERAL) {
warningf(&expr->base.source_position,
"comparison with string literal results in unspecified behaviour");
}
static bool maybe_negative(expression_t const *const expr)
{
- return
- !is_constant_expression(expr) ||
- fold_constant(expr) < 0;
+ switch (is_constant_expression(expr)) {
+ case EXPR_CLASS_ERROR: return false;
+ case EXPR_CLASS_CONSTANT: return fold_constant_to_int(expr) < 0;
+ default: return true;
+ }
}
/**
}
}
+static void semantic_integer_assign(binary_expression_t *expression)
+{
+ expression_t *left = expression->left;
+ expression_t *right = expression->right;
+ type_t *orig_type_left = left->base.type;
+ type_t *orig_type_right = right->base.type;
+
+ if (!is_valid_assignment_lhs(left))
+ return;
+
+ type_t *type_left = skip_typeref(orig_type_left);
+ type_t *type_right = skip_typeref(orig_type_right);
+
+ if (!is_type_integer(type_left) || !is_type_integer(type_right)) {
+ /* TODO: improve error message */
+ if (is_type_valid(type_left) && is_type_valid(type_right)) {
+ errorf(&expression->base.source_position,
+ "operation needs integer types");
+ }
+ return;
+ }
+
+ /* combined instructions are tricky. We can't create an implicit cast on
+ * the left side, because we need the uncasted form for the store.
+ * The ast2firm pass has to know that left_type must be right_type
+ * for the arithmetic operation and create a cast by itself */
+ type_t *arithmetic_type = semantic_arithmetic(type_left, type_right);
+ expression->right = create_implicit_cast(right, arithmetic_type);
+ expression->base.type = type_left;
+}
+
+static void semantic_shift_assign(binary_expression_t *expression)
+{
+ expression_t *left = expression->left;
+
+ if (!is_valid_assignment_lhs(left))
+ return;
+
+ if (!semantic_shift(expression))
+ return;
+
+ expression->base.type = skip_typeref(left->base.type);
+}
+
static void warn_logical_and_within_or(const expression_t *const expr)
{
if (expr->base.kind != EXPR_BINARY_LOGICAL_AND)
case EXPR_INVALID: return true; /* do NOT warn */
case EXPR_REFERENCE: return false;
case EXPR_REFERENCE_ENUM_VALUE: return false;
+ case EXPR_LABEL_ADDRESS: return false;
+
/* suppress the warning for microsoft __noop operations */
- case EXPR_CONST: return expr->conste.is_ms_noop;
- case EXPR_CHARACTER_CONSTANT: return false;
- case EXPR_WIDE_CHARACTER_CONSTANT: return false;
+ case EXPR_LITERAL_MS_NOOP: return true;
+ case EXPR_LITERAL_BOOLEAN:
+ 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;
- case EXPR_LABEL_ADDRESS: return false;
case EXPR_CALL: {
const call_expression_t *const call = &expr->call;
case EXPR_OFFSETOF: return false;
case EXPR_VA_START: return true;
case EXPR_VA_ARG: return true;
+ case EXPR_VA_COPY: return true;
case EXPR_STATEMENT: return true; // TODO
case EXPR_COMPOUND_LITERAL: return false;
binexpr->binary.left = left; \
eat(token_type); \
\
- expression_t *right = parse_sub_expression(prec_r); \
+ expression_t *right = parse_subexpression(prec_r); \
\
binexpr->binary.right = right; \
sfunc(&binexpr->binary); \
CREATE_BINEXPR_PARSER(T_ASTERISKEQUAL, EXPR_BINARY_MUL_ASSIGN, PREC_ASSIGNMENT, semantic_arithmetic_assign)
CREATE_BINEXPR_PARSER(T_SLASHEQUAL, EXPR_BINARY_DIV_ASSIGN, PREC_ASSIGNMENT, semantic_divmod_assign)
CREATE_BINEXPR_PARSER(T_PERCENTEQUAL, EXPR_BINARY_MOD_ASSIGN, PREC_ASSIGNMENT, semantic_divmod_assign)
-CREATE_BINEXPR_PARSER(T_LESSLESSEQUAL, EXPR_BINARY_SHIFTLEFT_ASSIGN, PREC_ASSIGNMENT, semantic_arithmetic_assign)
-CREATE_BINEXPR_PARSER(T_GREATERGREATEREQUAL, EXPR_BINARY_SHIFTRIGHT_ASSIGN, PREC_ASSIGNMENT, semantic_arithmetic_assign)
-CREATE_BINEXPR_PARSER(T_ANDEQUAL, EXPR_BINARY_BITWISE_AND_ASSIGN, PREC_ASSIGNMENT, semantic_arithmetic_assign)
-CREATE_BINEXPR_PARSER(T_PIPEEQUAL, EXPR_BINARY_BITWISE_OR_ASSIGN, PREC_ASSIGNMENT, semantic_arithmetic_assign)
-CREATE_BINEXPR_PARSER(T_CARETEQUAL, EXPR_BINARY_BITWISE_XOR_ASSIGN, PREC_ASSIGNMENT, semantic_arithmetic_assign)
+CREATE_BINEXPR_PARSER(T_LESSLESSEQUAL, EXPR_BINARY_SHIFTLEFT_ASSIGN, PREC_ASSIGNMENT, semantic_shift_assign)
+CREATE_BINEXPR_PARSER(T_GREATERGREATEREQUAL, EXPR_BINARY_SHIFTRIGHT_ASSIGN, PREC_ASSIGNMENT, semantic_shift_assign)
+CREATE_BINEXPR_PARSER(T_ANDEQUAL, EXPR_BINARY_BITWISE_AND_ASSIGN, PREC_ASSIGNMENT, semantic_integer_assign)
+CREATE_BINEXPR_PARSER(T_PIPEEQUAL, EXPR_BINARY_BITWISE_OR_ASSIGN, PREC_ASSIGNMENT, semantic_integer_assign)
+CREATE_BINEXPR_PARSER(T_CARETEQUAL, EXPR_BINARY_BITWISE_XOR_ASSIGN, PREC_ASSIGNMENT, semantic_integer_assign)
CREATE_BINEXPR_PARSER(',', EXPR_BINARY_COMMA, PREC_ASSIGNMENT, semantic_comma)
-static expression_t *parse_sub_expression(precedence_t precedence)
+static expression_t *parse_subexpression(precedence_t precedence)
{
if (token.type < 0) {
return expected_expression_error();
*/
static expression_t *parse_expression(void)
{
- return parse_sub_expression(PREC_EXPRESSION);
+ return parse_subexpression(PREC_EXPRESSION);
}
/**
asm_argument_t *argument = allocate_ast_zero(sizeof(argument[0]));
memset(argument, 0, sizeof(argument[0]));
- if (token.type == '[') {
- eat('[');
+ if (next_if('[')) {
if (token.type != T_IDENTIFIER) {
parse_error_expected("while parsing asm argument",
T_IDENTIFIER, NULL);
return NULL;
}
- argument->symbol = token.v.symbol;
+ argument->symbol = token.symbol;
expect(']', end_error);
}
"asm output argument is not an lvalue");
}
- if (argument->constraints.begin[0] == '+')
+ if (argument->constraints.begin[0] == '=')
+ determine_lhs_ent(expression, NULL);
+ else
mark_vars_read(expression, NULL);
} else {
mark_vars_read(expression, NULL);
*anchor = argument;
anchor = &argument->next;
- if (token.type != ',')
+ if (!next_if(','))
break;
- eat(',');
}
return result;
*/
static asm_clobber_t *parse_asm_clobbers(void)
{
- asm_clobber_t *result = NULL;
- asm_clobber_t *last = NULL;
+ asm_clobber_t *result = NULL;
+ asm_clobber_t **anchor = &result;
while (token.type == T_STRING_LITERAL) {
asm_clobber_t *clobber = allocate_ast_zero(sizeof(clobber[0]));
clobber->clobber = parse_string_literals();
- if (last != NULL) {
- last->next = clobber;
- } else {
- result = clobber;
- }
- last = clobber;
+ *anchor = clobber;
+ anchor = &clobber->next;
- if (token.type != ',')
+ if (!next_if(','))
break;
- eat(',');
}
return result;
eat(T_asm);
- if (token.type == T_volatile) {
- next_token();
+ if (next_if(T_volatile))
asm_statement->is_volatile = true;
- }
expect('(', end_error);
add_anchor_token(')');
- add_anchor_token(':');
+ if (token.type != T_STRING_LITERAL) {
+ parse_error_expected("after asm(", T_STRING_LITERAL, NULL);
+ goto end_of_asm;
+ }
asm_statement->asm_text = parse_string_literals();
- if (token.type != ':') {
+ add_anchor_token(':');
+ if (!next_if(':')) {
rem_anchor_token(':');
goto end_of_asm;
}
- eat(':');
asm_statement->outputs = parse_asm_arguments(true);
- if (token.type != ':') {
+ if (!next_if(':')) {
rem_anchor_token(':');
goto end_of_asm;
}
- eat(':');
asm_statement->inputs = parse_asm_arguments(false);
- if (token.type != ':') {
+ if (!next_if(':')) {
rem_anchor_token(':');
goto end_of_asm;
}
rem_anchor_token(':');
- eat(':');
asm_statement->clobbers = parse_asm_clobbers();
return create_invalid_statement();
}
+static statement_t *parse_label_inner_statement(char const *const label, bool const eat_empty_stmt)
+{
+ statement_t *inner_stmt;
+ switch (token.type) {
+ case '}':
+ errorf(HERE, "%s at end of compound statement", label);
+ inner_stmt = create_invalid_statement();
+ break;
+
+ case ';':
+ if (eat_empty_stmt) {
+ /* Eat an empty statement here, to avoid the warning about an empty
+ * statement after a label. label:; is commonly used to have a label
+ * before a closing brace. */
+ inner_stmt = create_empty_statement();
+ next_token();
+ break;
+ }
+ /* FALLTHROUGH */
+
+ default:
+ inner_stmt = parse_statement();
+ if (inner_stmt->kind == STATEMENT_DECLARATION) {
+ errorf(&inner_stmt->base.source_position, "declaration after %s", label);
+ }
+ break;
+ }
+ return inner_stmt;
+}
+
/**
* Parse a case statement.
*/
expression_t *const expression = parse_expression();
statement->case_label.expression = expression;
- if (!is_constant_expression(expression)) {
- /* This check does not prevent the error message in all cases of an
- * prior error while parsing the expression. At least it catches the
- * common case of a mistyped enum entry. */
- if (is_type_valid(skip_typeref(expression->base.type))) {
+ expression_classification_t const expr_class = is_constant_expression(expression);
+ if (expr_class != EXPR_CLASS_CONSTANT) {
+ if (expr_class != EXPR_CLASS_ERROR) {
errorf(pos, "case label does not reduce to an integer constant");
}
statement->case_label.is_bad = true;
} else {
- long const val = fold_constant(expression);
+ long const val = fold_constant_to_int(expression);
statement->case_label.first_case = val;
statement->case_label.last_case = val;
}
if (GNU_MODE) {
- if (token.type == T_DOTDOTDOT) {
- next_token();
+ if (next_if(T_DOTDOTDOT)) {
expression_t *const end_range = parse_expression();
statement->case_label.end_range = end_range;
- if (!is_constant_expression(end_range)) {
- /* This check does not prevent the error message in all cases of an
- * prior error while parsing the expression. At least it catches the
- * common case of a mistyped enum entry. */
- if (is_type_valid(skip_typeref(end_range->base.type))) {
+ expression_classification_t const end_class = is_constant_expression(end_range);
+ if (end_class != EXPR_CLASS_CONSTANT) {
+ if (end_class != EXPR_CLASS_ERROR) {
errorf(pos, "case range does not reduce to an integer constant");
}
statement->case_label.is_bad = true;
} else {
- long const val = fold_constant(end_range);
+ long const val = fold_constant_to_int(end_range);
statement->case_label.last_case = val;
if (warning.other && val < statement->case_label.first_case) {
errorf(pos, "case label not within a switch statement");
}
- statement_t *const inner_stmt = parse_statement();
- statement->case_label.statement = inner_stmt;
- if (inner_stmt->kind == STATEMENT_DECLARATION) {
- errorf(&inner_stmt->base.source_position, "declaration after case label");
- }
+ statement->case_label.statement = parse_label_inner_statement("case label", false);
POP_PARENT;
return statement;
PUSH_PARENT(statement);
expect(':', end_error);
+end_error:
+
if (current_switch != NULL) {
const case_label_statement_t *def_label = current_switch->default_label;
if (def_label != NULL) {
"'default' label not within a switch statement");
}
- statement_t *const inner_stmt = parse_statement();
- statement->case_label.statement = inner_stmt;
- if (inner_stmt->kind == STATEMENT_DECLARATION) {
- errorf(&inner_stmt->base.source_position, "declaration after default label");
- }
+ statement->case_label.statement = parse_label_inner_statement("default label", false);
POP_PARENT;
return statement;
-end_error:
- POP_PARENT;
- return create_invalid_statement();
}
/**
static statement_t *parse_label_statement(void)
{
assert(token.type == T_IDENTIFIER);
- symbol_t *symbol = token.v.symbol;
+ symbol_t *symbol = token.symbol;
label_t *label = get_label(symbol);
statement_t *const statement = allocate_statement_zero(STATEMENT_LABEL);
eat(':');
- if (token.type == '}') {
- /* TODO only warn? */
- if (warning.other && false) {
- warningf(HERE, "label at end of compound statement");
- statement->label.statement = create_empty_statement();
- } else {
- errorf(HERE, "label at end of compound statement");
- statement->label.statement = create_invalid_statement();
- }
- } else if (token.type == ';') {
- /* Eat an empty statement here, to avoid the warning about an empty
- * statement after a label. label:; is commonly used to have a label
- * before a closing brace. */
- statement->label.statement = create_empty_statement();
- next_token();
- } else {
- statement_t *const inner_stmt = parse_statement();
- statement->label.statement = inner_stmt;
- if (inner_stmt->kind == STATEMENT_DECLARATION) {
- errorf(&inner_stmt->base.source_position, "declaration after label");
- }
- }
+ statement->label.statement = parse_label_inner_statement("label", true);
/* remember the labels in a list for later checking */
*label_anchor = &statement->label;
statement->ifs.true_statement = true_stmt;
rem_anchor_token(T_else);
- if (token.type == T_else) {
- next_token();
+ if (next_if(T_else)) {
statement->ifs.false_statement = parse_statement();
} else if (warning.parentheses &&
true_stmt->kind == STATEMENT_IF &&
for (; entry != NULL && entry->kind == ENTITY_ENUM_VALUE;
entry = entry->base.next) {
const expression_t *expression = entry->enum_value.value;
- long value = expression != NULL ? fold_constant(expression) : last_value + 1;
+ long value = expression != NULL ? fold_constant_to_int(expression) : last_value + 1;
bool found = false;
for (const case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
if (l->expression == NULL)
size_t const top = environment_top();
scope_t *old_scope = scope_push(&statement->fors.scope);
- if (token.type == ';') {
- next_token();
+ bool old_gcc_extension = in_gcc_extension;
+ while (next_if(T___extension__)) {
+ in_gcc_extension = true;
+ }
+
+ if (next_if(';')) {
} else if (is_declaration_specifier(&token, false)) {
parse_declaration(record_entity, DECL_FLAGS_NONE);
} else {
rem_anchor_token(';');
expect(';', end_error2);
}
+ in_gcc_extension = old_gcc_extension;
if (token.type != ';') {
add_anchor_token(';');
statement_t *statement = allocate_statement_zero(STATEMENT_GOTO);
eat(T_goto);
- if (GNU_MODE && token.type == '*') {
- next_token();
+ if (GNU_MODE && next_if('*')) {
expression_t *expression = parse_expression();
mark_vars_read(expression, NULL);
}
statement->gotos.expression = expression;
- } else {
- if (token.type != T_IDENTIFIER) {
- if (GNU_MODE)
- parse_error_expected("while parsing goto", T_IDENTIFIER, '*', NULL);
- else
- parse_error_expected("while parsing goto", T_IDENTIFIER, NULL);
- eat_until_anchor();
- goto end_error;
- }
- symbol_t *symbol = token.v.symbol;
+ } else if (token.type == T_IDENTIFIER) {
+ symbol_t *symbol = token.symbol;
next_token();
-
statement->gotos.label = get_label(symbol);
+ } else {
+ if (GNU_MODE)
+ parse_error_expected("while parsing goto", T_IDENTIFIER, '*', NULL);
+ else
+ parse_error_expected("while parsing goto", T_IDENTIFIER, NULL);
+ eat_until_anchor();
+ return create_invalid_statement();
}
/* remember the goto's in a list for later checking */
expect(';', end_error);
- return statement;
end_error:
- return create_invalid_statement();
+ return statement;
}
/**
/* Only warn in C mode, because GCC does the same */
if (strict_mode) {
errorf(pos,
- "'return' with expression in function return 'void'");
+ "'return' with expression in function returning 'void'");
} else if (warning.other) {
warningf(pos,
- "'return' with expression in function return 'void'");
+ "'return' with expression in function returning 'void'");
}
}
} else {
POP_PARENT;
- if (token.type == T___except) {
- eat(T___except);
+ if (next_if(T___except)) {
expect('(', end_error);
add_anchor_token(')');
expression_t *const expr = parse_expression();
rem_anchor_token(')');
expect(')', end_error);
statement->ms_try.final_statement = parse_compound_statement(false);
- } else if (token.type == T__finally) {
- eat(T___finally);
+ } else if (next_if(T__finally)) {
statement->ms_try.final_statement = parse_compound_statement(false);
} else {
parse_error_expected("while parsing __try statement", T___except, T___finally, NULL);
eat(T___label__);
- entity_t *begin = NULL, *end = NULL;
-
- while (true) {
+ entity_t *begin = NULL;
+ entity_t *end = NULL;
+ entity_t **anchor = &begin;
+ do {
if (token.type != T_IDENTIFIER) {
parse_error_expected("while parsing local label declaration",
T_IDENTIFIER, NULL);
goto end_error;
}
- symbol_t *symbol = token.v.symbol;
+ symbol_t *symbol = token.symbol;
entity_t *entity = get_entity(symbol, NAMESPACE_LABEL);
if (entity != NULL && entity->base.parent_scope == current_scope) {
errorf(HERE, "multiple definitions of '__label__ %Y' (previous definition %P)",
entity->base.source_position = token.source_position;
entity->base.symbol = symbol;
- if (end != NULL)
- end->base.next = entity;
- end = entity;
- if (begin == NULL)
- begin = entity;
+ *anchor = entity;
+ anchor = &entity->base.next;
+ end = entity;
environment_push(entity);
}
next_token();
-
- if (token.type != ',')
- break;
- next_token();
- }
- eat(';');
+ } while (next_if(','));
+ expect(';', end_error);
end_error:
statement->declaration.declarations_begin = begin;
statement->declaration.declarations_end = end;
symbol_t *symbol = NULL;
if (token.type == T_IDENTIFIER) {
- symbol = token.v.symbol;
+ symbol = token.symbol;
next_token();
entity = get_entity(symbol, NAMESPACE_NORMAL);
- if (entity != NULL &&
- entity->kind != ENTITY_NAMESPACE &&
- entity->base.parent_scope == current_scope) {
+ if (entity != NULL
+ && entity->kind != ENTITY_NAMESPACE
+ && entity->base.parent_scope == current_scope) {
if (!is_error_entity(entity)) {
error_redefined_as_different_kind(&token.source_position,
entity, ENTITY_NAMESPACE);
size_t const top = environment_top();
scope_t *old_scope = scope_push(&entity->namespacee.members);
+ entity_t *old_current_entity = current_entity;
+ current_entity = entity;
+
expect('{', end_error);
parse_externals();
expect('}', end_error);
end_error:
assert(current_scope == &entity->namespacee.members);
+ assert(current_entity == entity);
+ current_entity = old_current_entity;
scope_pop(old_scope);
environment_pop_to(top);
}
token_type_t la1_type = (token_type_t)look_ahead(1)->type;
if (la1_type == ':') {
statement = parse_label_statement();
- } else if (is_typedef_symbol(token.v.symbol)) {
+ } else if (is_typedef_symbol(token.symbol)) {
statement = parse_declaration_statement();
} else {
/* it's an identifier, the grammar says this must be an
switch (la1_type) {
case '&':
case '*':
- if (get_entity(token.v.symbol, NAMESPACE_NORMAL) != NULL)
- goto expression_statment;
- /* FALLTHROUGH */
-
+ if (get_entity(token.symbol, NAMESPACE_NORMAL) != NULL) {
+ default:
+ statement = parse_expression_statement();
+ } else {
DECLARATION_START
case T_IDENTIFIER:
- statement = parse_declaration_statement();
- break;
-
- default:
-expression_statment:
- statement = parse_expression_statement();
+ statement = parse_declaration_statement();
+ }
break;
}
}
case T___extension__:
/* This can be a prefix to a declaration or an expression statement.
* We simply eat it now and parse the rest with tail recursion. */
- do {
- next_token();
- } while (token.type == T___extension__);
+ while (next_if(T___extension__)) {}
bool old_gcc_extension = in_gcc_extension;
in_gcc_extension = true;
statement = intern_parse_statement();
}
current_linkage = new_linkage;
- if (token.type == '{') {
- next_token();
+ if (next_if('{')) {
parse_externals();
expect('}', end_error);
} else {
error_count = 0;
warning_count = 0;
- type_set_output(stderr);
- ast_set_output(stderr);
+ print_to_file(stderr);
assert(unit == NULL);
unit = allocate_ast_zero(sizeof(unit[0]));
}
}
+void prepare_main_collect2(entity_t *entity)
+{
+ // create call to __main
+ symbol_t *symbol = symbol_table_insert("__main");
+ entity_t *subsubmain_ent
+ = create_implicit_function(symbol, &builtin_source_position);
+
+ expression_t *ref = allocate_expression_zero(EXPR_REFERENCE);
+ type_t *ftype = subsubmain_ent->declaration.type;
+ ref->base.source_position = builtin_source_position;
+ ref->base.type = make_pointer_type(ftype, TYPE_QUALIFIER_NONE);
+ ref->reference.entity = subsubmain_ent;
+
+ expression_t *call = allocate_expression_zero(EXPR_CALL);
+ call->base.source_position = builtin_source_position;
+ call->base.type = type_void;
+ call->call.function = ref;
+
+ statement_t *expr_statement = allocate_statement_zero(STATEMENT_EXPRESSION);
+ expr_statement->base.source_position = builtin_source_position;
+ expr_statement->expression.expression = call;
+
+ statement_t *statement = entity->function.statement;
+ assert(statement->kind == STATEMENT_COMPOUND);
+ compound_statement_t *compounds = &statement->compound;
+
+ expr_statement->base.next = compounds->statements;
+ compounds->statements = expr_statement;
+}
+
void parse(void)
{
lookahead_bufpos = 0;
incomplete_arrays = NULL;
}
-/**
- * create a builtin function.
- */
-static entity_t *create_builtin_function(builtin_kind_t kind, const char *name, type_t *function_type)
-{
- symbol_t *symbol = symbol_table_insert(name);
- entity_t *entity = allocate_entity_zero(ENTITY_FUNCTION);
- entity->declaration.storage_class = STORAGE_CLASS_EXTERN;
- entity->declaration.declared_storage_class = STORAGE_CLASS_EXTERN;
- entity->declaration.type = function_type;
- entity->declaration.implicit = true;
- entity->base.symbol = symbol;
- entity->base.source_position = builtin_source_position;
-
- entity->function.btk = kind;
-
- record_entity(entity, /*is_definition=*/false);
- return entity;
-}
-
-
-/**
- * Create predefined gnu builtins.
- */
-static void create_gnu_builtins(void)
-{
-#define GNU_BUILTIN(a, b) create_builtin_function(bk_gnu_builtin_##a, "__builtin_" #a, b)
-
- GNU_BUILTIN(alloca, make_function_1_type(type_void_ptr, type_size_t));
- GNU_BUILTIN(huge_val, make_function_0_type(type_double));
- GNU_BUILTIN(inf, make_function_0_type(type_double));
- GNU_BUILTIN(inff, make_function_0_type(type_float));
- GNU_BUILTIN(infl, make_function_0_type(type_long_double));
- GNU_BUILTIN(nan, make_function_1_type(type_double, type_char_ptr));
- GNU_BUILTIN(nanf, make_function_1_type(type_float, type_char_ptr));
- GNU_BUILTIN(nanl, make_function_1_type(type_long_double, type_char_ptr));
- GNU_BUILTIN(va_end, make_function_1_type(type_void, type_valist));
- GNU_BUILTIN(expect, make_function_2_type(type_long, type_long, type_long));
- GNU_BUILTIN(return_address, make_function_1_type(type_void_ptr, type_unsigned_int));
- GNU_BUILTIN(frame_address, make_function_1_type(type_void_ptr, type_unsigned_int));
- GNU_BUILTIN(ffs, make_function_1_type(type_int, type_unsigned_int));
- GNU_BUILTIN(clz, make_function_1_type(type_int, type_unsigned_int));
- GNU_BUILTIN(ctz, make_function_1_type(type_int, type_unsigned_int));
- GNU_BUILTIN(popcount, make_function_1_type(type_int, type_unsigned_int));
- GNU_BUILTIN(parity, make_function_1_type(type_int, type_unsigned_int));
- GNU_BUILTIN(prefetch, make_function_1_type_variadic(type_float, type_void_ptr));
- GNU_BUILTIN(trap, make_function_0_type_noreturn(type_void));
-
-#undef GNU_BUILTIN
-}
-
-/**
- * Create predefined MS intrinsics.
- */
-static void create_microsoft_intrinsics(void)
-{
-#define MS_BUILTIN(a, b) create_builtin_function(bk_ms##a, #a, b)
-
- /* intrinsics for all architectures */
- MS_BUILTIN(_rotl, make_function_2_type(type_unsigned_int, type_unsigned_int, type_int));
- MS_BUILTIN(_rotr, make_function_2_type(type_unsigned_int, type_unsigned_int, type_int));
- MS_BUILTIN(_rotl64, make_function_2_type(type_unsigned_int64, type_unsigned_int64, type_int));
- MS_BUILTIN(_rotr64, make_function_2_type(type_unsigned_int64, type_unsigned_int64, type_int));
- MS_BUILTIN(_byteswap_ushort, make_function_1_type(type_unsigned_short, type_unsigned_short));
- MS_BUILTIN(_byteswap_ulong, make_function_1_type(type_unsigned_long, type_unsigned_long));
- MS_BUILTIN(_byteswap_uint64, make_function_1_type(type_unsigned_int64, type_unsigned_int64));
-
- MS_BUILTIN(__debugbreak, make_function_0_type(type_void));
- MS_BUILTIN(_ReturnAddress, make_function_0_type(type_void_ptr));
- MS_BUILTIN(__popcount, make_function_1_type(type_unsigned_int, type_unsigned_int));
-
- /* x86/x64 only */
- MS_BUILTIN(_enable, make_function_0_type(type_void));
- MS_BUILTIN(_disable, make_function_0_type(type_void));
- MS_BUILTIN(__inbyte, make_function_1_type(type_unsigned_char, type_unsigned_short));
- MS_BUILTIN(__inword, make_function_1_type(type_unsigned_short, type_unsigned_short));
- MS_BUILTIN(__indword, make_function_1_type(type_unsigned_long, type_unsigned_short));
- MS_BUILTIN(__outbyte, make_function_2_type(type_void, type_unsigned_short, type_unsigned_char));
- MS_BUILTIN(__outword, make_function_2_type(type_void, type_unsigned_short, type_unsigned_short));
- MS_BUILTIN(__outdword, make_function_2_type(type_void, type_unsigned_short, type_unsigned_long));
- MS_BUILTIN(__ud2, make_function_0_type_noreturn(type_void));
- MS_BUILTIN(_BitScanForward, make_function_2_type(type_unsigned_char, type_unsigned_long_ptr, type_unsigned_long));
- MS_BUILTIN(_BitScanReverse, make_function_2_type(type_unsigned_char, type_unsigned_long_ptr, type_unsigned_long));
- MS_BUILTIN(_InterlockedExchange, make_function_2_type(type_long, type_long_ptr, type_long));
- MS_BUILTIN(_InterlockedExchange64, make_function_2_type(type_int64, type_int64_ptr, type_int64));
-
- if (machine_size <= 32) {
- MS_BUILTIN(__readeflags, make_function_0_type(type_unsigned_int));
- MS_BUILTIN(__writeeflags, make_function_1_type(type_void, type_unsigned_int));
- } else {
- MS_BUILTIN(__readeflags, make_function_0_type(type_unsigned_int64));
- MS_BUILTIN(__writeeflags, make_function_1_type(type_void, type_unsigned_int64));
- }
-
-#undef MS_BUILTIN
-}
-
/**
* Initialize the parser.
*/
{
sym_anonymous = symbol_table_insert("<anonymous>");
- if (c_mode & _MS) {
- /* add predefined symbols for extended-decl-modifier */
- sym_align = symbol_table_insert("align");
- sym_allocate = symbol_table_insert("allocate");
- sym_dllimport = symbol_table_insert("dllimport");
- sym_dllexport = symbol_table_insert("dllexport");
- sym_naked = symbol_table_insert("naked");
- sym_noinline = symbol_table_insert("noinline");
- sym_returns_twice = symbol_table_insert("returns_twice");
- sym_noreturn = symbol_table_insert("noreturn");
- sym_nothrow = symbol_table_insert("nothrow");
- sym_novtable = symbol_table_insert("novtable");
- sym_property = symbol_table_insert("property");
- sym_get = symbol_table_insert("get");
- sym_put = symbol_table_insert("put");
- sym_selectany = symbol_table_insert("selectany");
- sym_thread = symbol_table_insert("thread");
- sym_uuid = symbol_table_insert("uuid");
- sym_deprecated = symbol_table_insert("deprecated");
- sym_restrict = symbol_table_insert("restrict");
- sym_noalias = symbol_table_insert("noalias");
- }
memset(token_anchor_set, 0, sizeof(token_anchor_set));
init_expression_parsers();
projects / cparser / blobdiff