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/* Declarations and definitions dealing with attribute handling.
Copyright (C) 2013-2017 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_ATTRIBS_H
#define GCC_ATTRIBS_H
extern const struct attribute_spec *lookup_attribute_spec (const_tree);
extern void init_attributes (void);
/* Process the attributes listed in ATTRIBUTES and install them in *NODE,
which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
it should be modified in place; if a TYPE, a copy should be created
unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
information, in the form of a bitwise OR of flags in enum attribute_flags
from tree.h. Depending on these flags, some attributes may be
returned to be applied at a later stage (for example, to apply
a decl attribute to the declaration rather than to its type). */
extern tree decl_attributes (tree *, tree, int);
extern bool cxx11_attribute_p (const_tree);
extern tree get_attribute_name (const_tree);
extern void apply_tm_attr (tree, tree);
extern tree make_attribute (const char *, const char *, tree);
extern struct scoped_attributes* register_scoped_attributes (const struct attribute_spec *,
const char *);
extern char *sorted_attr_string (tree);
extern bool common_function_versions (tree, tree);
extern char *make_unique_name (tree, const char *, bool);
extern tree make_dispatcher_decl (const tree);
extern bool is_function_default_version (const tree);
/* For a given IDENTIFIER_NODE, strip leading and trailing '_' characters
so that we have a canonical form of attribute names. */
static inline tree
canonicalize_attr_name (tree attr_name)
{
const size_t l = IDENTIFIER_LENGTH (attr_name);
const char *s = IDENTIFIER_POINTER (attr_name);
if (l > 4 && s[0] == '_' && s[1] == '_' && s[l - 1] == '_' && s[l - 2] == '_')
return get_identifier_with_length (s + 2, l - 4);
return attr_name;
}
/* Compare attribute identifiers ATTR1 and ATTR2 with length ATTR1_LEN and
ATTR2_LEN. */
static inline bool
cmp_attribs (const char *attr1, size_t attr1_len,
const char *attr2, size_t attr2_len)
{
return attr1_len == attr2_len && strncmp (attr1, attr2, attr1_len) == 0;
}
/* Compare attribute identifiers ATTR1 and ATTR2. */
static inline bool
cmp_attribs (const char *attr1, const char *attr2)
{
return cmp_attribs (attr1, strlen (attr1), attr2, strlen (attr2));
}
/* Given an identifier node IDENT and a string ATTR_NAME, return true
if the identifier node is a valid attribute name for the string. */
static inline bool
is_attribute_p (const char *attr_name, const_tree ident)
{
return cmp_attribs (attr_name, strlen (attr_name),
IDENTIFIER_POINTER (ident), IDENTIFIER_LENGTH (ident));
}
#endif // GCC_ATTRIBS_H
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