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Implement C++11 user-defined literals.

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libcpp/
	* expr.c: (cpp_interpret_float_suffix, cpp_interpret_int_suffix,
	cpp_userdef_string_remove_type, cpp_userdef_string_add_type,
	cpp_userdef_char_remove_type, cpp_userdef_char_add_type,
	cpp_userdef_string_p, cpp_userdef_char_p, cpp_get_userdef_suffix): New.
	(cpp_classify_number): Classify unrecognized tokens as user-defined
	literals.
	* include/cpplib.h: Add new tokens for user-defined literals.
	* init.c: Add new preprocessor flag (cxx11).
	* lex.c: (lex_string, lex_raw_string): Handle user-defined literals
	including concatenation and promotion with suffixes.
c-family/
	* c-common.c (build_userdef_literal): New.
	* c-common.def: New tree code.
	* c-common.h (tree_userdef_literal): New tree struct and accessors.
	* c-lex.c (interpret_float): Add suffix parm.
	(c_lex_with_flags): Build literal tokens.
cp/
	* cp-objcp-common.c: (cp_tree_size) Return size of USERDEF_LITERAL tree.
	* cp-tree.h: (UDLIT_OP_*, UDLIT_OPER_P): Literal operator
	name tools. New tree code for user-defined literals.
	* cxx-pretty-print.h: (pp_cxx_userdef_literal) New.
	* cxx-pretty-print.c: (pp_cxx_userdef_literal) New.
	(pp_cxx_primary_expression, pp_cxx_expression): Use it.
	* decl.c: (cp_tree_node_structure): Return new tree code.
	(duplicate_decls): Check for raw vs. template operator conflicts.
	(grokfndecl, grokdeclarator): New checks for literal operators.
	* error.c: (dump_expr): Warn about user-defined literals
	in C++98 mode. (dump_function_name): Pretty printing.
	* mangle.c: (write_literal_operator_name): New.
	(write_unqualified_id, write_unqualified_name): Use it.
	* parser.c: (cp_parser_operator): Handle operator"".
	(cp_parser_userdef_char_literal, cp_parser_userdef_numeric_literal,
	cp_parser_userdef_string_literal): New.
	(cp_parser_primary_expression): Handle new user-defined literal tokens
	with new functions.
	* semantics.c: (potential_constant_expression_1): Add
	user-defined literals.
	* typeck.c (check_raw_literal_operator,
	check_literal_operator_args): New.

From-SVN: r180536
This commit is contained in:
Ed Smith-Rowland 2011-10-26 19:30:59 +00:00 • committed by Jason Merrill
parent 7f808cadda
commit 3ce4f9e4d2
57 changed files with 1714 additions and 51 deletions
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42
libcpp/include/cpplib.h
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@ -131,6 +131,16 @@ struct _cpp_file;
TK(OBJC_STRING, LITERAL) /* @"string" - Objective-C */ \
TK(HEADER_NAME, LITERAL) /* <stdio.h> in #include */ \
\
TK(CHAR_USERDEF, LITERAL) /* 'char'_suffix - C++-0x */ \
TK(WCHAR_USERDEF, LITERAL) /* L'char'_suffix - C++-0x */ \
TK(CHAR16_USERDEF, LITERAL) /* u'char'_suffix - C++-0x */ \
TK(CHAR32_USERDEF, LITERAL) /* U'char'_suffix - C++-0x */ \
TK(STRING_USERDEF, LITERAL) /* "string"_suffix - C++-0x */ \
TK(WSTRING_USERDEF, LITERAL) /* L"string"_suffix - C++-0x */ \
TK(STRING16_USERDEF, LITERAL) /* u"string"_suffix - C++-0x */ \
TK(STRING32_USERDEF, LITERAL) /* U"string"_suffix - C++-0x */ \
TK(UTF8STRING_USERDEF,LITERAL) /* u8"string"_suffix - C++-0x */ \
\
TK(COMMENT, LITERAL) /* Only if output comments. */ \
/* SPELL_LITERAL happens to DTRT. */ \
TK(MACRO_ARG, NONE) /* Macro argument. */ \
@ -414,6 +424,9 @@ struct cpp_options
/* True for traditional preprocessing. */
unsigned char traditional;
/* Nonzero for C++ 2011 Standard user-defnied literals. */
unsigned char user_literals;
/* Holds the name of the target (execution) character set. */
const char *narrow_charset;
@ -829,13 +842,22 @@ struct cpp_num
#define CPP_N_FRACT 0x100000 /* Fract types. */
#define CPP_N_ACCUM 0x200000 /* Accum types. */
#define CPP_N_USERDEF 0x1000000 /* C++0x user-defined literal. */
/* Classify a CPP_NUMBER token. The return value is a combination of
the flags from the above sets. */
extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *);
extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *,
const char **);
/* Return the classification flags for a float suffix. */
extern unsigned int cpp_interpret_float_suffix (const char *, size_t);
/* Return the classification flags for an int suffix. */
extern unsigned int cpp_interpret_int_suffix (const char *, size_t);
/* Evaluate a token classified as category CPP_N_INTEGER. */
extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *,
unsigned int type);
unsigned int);
/* Sign extend a number, with PRECISION significant bits and all
others assumed clear, to fill out a cpp_num structure. */
@ -1005,4 +1027,20 @@ extern int cpp_read_state (cpp_reader *, const char *, FILE *,
extern void cpp_force_token_locations (cpp_reader *, source_location *);
extern void cpp_stop_forcing_token_locations (cpp_reader *);
/* In expr.c */
extern enum cpp_ttype cpp_userdef_string_remove_type
(enum cpp_ttype type);
extern enum cpp_ttype cpp_userdef_string_add_type
(enum cpp_ttype type);
extern enum cpp_ttype cpp_userdef_char_remove_type
(enum cpp_ttype type);
extern enum cpp_ttype cpp_userdef_char_add_type
(enum cpp_ttype type);
extern bool cpp_userdef_string_p
(enum cpp_ttype type);
extern bool cpp_userdef_char_p
(enum cpp_ttype type);
extern const char * cpp_get_userdef_suffix
(const cpp_token *);
#endif /* ! LIBCPP_CPPLIB_H */