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cpplib.h (cpp_callbacks): Add has_attribute.

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libcpp:

2014-11-10  Edward Smith-Rowland  <3dw4rd@verizon.net>

	* include/cpplib.h (cpp_callbacks): Add has_attribute.
	* internal.h (lexer_state): Add in__has_attribute__.
	* directives.c (lex_macro_node): Prevent use of __has_attribute__
	as a macro.
	* expr.c (parse_has_attribute): New function; (eval_token): Look for
	__has_attribute__ and route to parse_has_attribute.
	* identifiers.c (_cpp_init_hashtable): Initialize n__has_attribute__.
	* pch.c (cpp_read_state): Initialize n__has_attribute__.
	* traditional.c (enum ls): Add ls_has_attribute, ls_has_attribute_close;
	(_cpp_scan_out_logical_line): Attend to __has_attribute__.


gcc/c-family:

2014-11-10  Edward Smith-Rowland  <3dw4rd@verizon.net>

	* c-cppbuiltin.c (__has_attribute, __has_cpp_attribute): New macros;
	(__cpp_rtti, __cpp_exceptions): New macros for C++98;
	(__cpp_range_based_for, __cpp_initializer_lists,
	__cpp_delegating_constructors, __cpp_nsdmi,
	__cpp_inheriting_constructors, __cpp_ref_qualifiers): New macros
	for C++11; (__cpp_attribute_deprecated): Remove in favor of
	__has_cpp_attribute.
	* c-lex.c (cb_has_attribute): New callback CPP function;
	(init_c_lex): Set has_attribute callback.


gcc/testsuite:

2014-11-10  Edward Smith-Rowland  <3dw4rd@verizon.net>

	* g++.dg/cpp1y/feat-cxx11.C: Test new feature macros for C++98
	and C++11; Test existence of __has_cpp_attribute;  Test C++11
	attributes.
	* g++.dg/cpp1y/feat-cxx11-neg.C: Ditto.
	* g++.dg/cpp1y/feat-cxx14.C: Ditto and test for C++14 attributes.
	* g++.dg/cpp1y/feat-cxx98.C: Test new feature macros for C++98.
	* g++.dg/cpp1y/feat-cxx98-neg.C: Ditto.
	* g++.dg/cpp1y/feat-neg.C: Test that __cpp_rtti, _cpp_exceptions
	will be undefined for -fno-rtti -fno-exceptions.

From-SVN: r217292
This commit is contained in:
Edward Smith-Rowland 2014-11-10 15:53:12 +00:00 • committed by Edward Smith-Rowland
parent 6d64f20c8d
commit 42fd12b1e7
18 changed files with 424 additions and 23 deletions
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21
libcpp/expr.c
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@ -65,6 +65,7 @@ static unsigned int interpret_int_suffix (cpp_reader *, const uchar *, size_t);
static void check_promotion (cpp_reader *, const struct op *);
static cpp_num parse_has_include (cpp_reader *, enum include_type);
static cpp_num parse_has_attribute (cpp_reader *);
/* Token type abuse to create unary plus and minus operators. */
#define CPP_UPLUS ((enum cpp_ttype) (CPP_LAST_CPP_OP + 1))
@ -1054,6 +1055,8 @@ eval_token (cpp_reader *pfile, const cpp_token *token,
return parse_has_include (pfile, IT_INCLUDE);
else if (token->val.node.node == pfile->spec_nodes.n__has_include_next__)
return parse_has_include (pfile, IT_INCLUDE_NEXT);
else if (token->val.node.node == pfile->spec_nodes.n__has_attribute__)
return parse_has_attribute (pfile);
else if (CPP_OPTION (pfile, cplusplus)
&& (token->val.node.node == pfile->spec_nodes.n_true
|| token->val.node.node == pfile->spec_nodes.n_false))
@ -2147,3 +2150,21 @@ parse_has_include (cpp_reader *pfile, enum include_type type)
return result;
}
/* Handle meeting "__has_attribute__" in a preprocessor expression. */
static cpp_num
parse_has_attribute (cpp_reader *pfile)
{
pfile->state.in__has_attribute__++;
cpp_num result;
result.unsignedp = false;
result.high = 0;
result.overflow = false;
result.low = pfile->cb.has_attribute (pfile);
pfile->state.in__has_attribute__--;
return result;
}