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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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28
libcpp/init.c
View file

@ -80,22 +80,23 @@ struct lang_flags
char digraphs;
char uliterals;
char rliterals;
char user_literals;
};
static const struct lang_flags lang_defaults[] =
{ /* c99 c++ xnum xid std // digr ulit rlit */
/* GNUC89 */ { 0, 0, 1, 0, 0, 1, 1, 0, 0 },
/* GNUC99 */ { 1, 0, 1, 0, 0, 1, 1, 1, 1 },
/* GNUC1X */ { 1, 0, 1, 0, 0, 1, 1, 1, 1 },
/* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0, 0 },
/* STDC94 */ { 0, 0, 0, 0, 1, 0, 1, 0, 0 },
/* STDC99 */ { 1, 0, 1, 0, 1, 1, 1, 0, 0 },
/* STDC1X */ { 1, 0, 1, 0, 1, 1, 1, 1, 0 },
/* GNUCXX */ { 0, 1, 1, 0, 0, 1, 1, 0, 0 },
/* CXX98 */ { 0, 1, 1, 0, 1, 1, 1, 0, 0 },
/* GNUCXX0X */ { 1, 1, 1, 0, 0, 1, 1, 1, 1 },
/* CXX0X */ { 1, 1, 1, 0, 1, 1, 1, 1, 1 },
/* ASM */ { 0, 0, 1, 0, 0, 1, 0, 0, 0 }
{ /* c99 c++ xnum xid std // digr ulit rlit user_literals */
/* GNUC89 */ { 0, 0, 1, 0, 0, 1, 1, 0, 0, 0 },
/* GNUC99 */ { 1, 0, 1, 0, 0, 1, 1, 1, 1, 0 },
/* GNUC1X */ { 1, 0, 1, 0, 0, 1, 1, 1, 1, 0 },
/* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0, 0, 0 },
/* STDC94 */ { 0, 0, 0, 0, 1, 0, 1, 0, 0, 0 },
/* STDC99 */ { 1, 0, 1, 0, 1, 1, 1, 0, 0, 0 },
/* STDC1X */ { 1, 0, 1, 0, 1, 1, 1, 1, 0, 0 },
/* GNUCXX */ { 0, 1, 1, 0, 0, 1, 1, 0, 0, 0 },
/* CXX98 */ { 0, 1, 1, 0, 1, 1, 1, 0, 0, 0 },
/* GNUCXX0X */ { 1, 1, 1, 0, 0, 1, 1, 1, 1, 1 },
/* CXX0X */ { 1, 1, 1, 0, 1, 1, 1, 1, 1, 1 },
/* ASM */ { 0, 0, 1, 0, 0, 1, 0, 0, 0, 0 }
/* xid should be 1 for GNUC99, STDC99, GNUCXX, CXX98, GNUCXX0X, and
CXX0X when no longer experimental (when all uses of identifiers
in the compiler have been audited for correct handling of
@ -120,6 +121,7 @@ cpp_set_lang (cpp_reader *pfile, enum c_lang lang)
CPP_OPTION (pfile, digraphs) = l->digraphs;
CPP_OPTION (pfile, uliterals) = l->uliterals;
CPP_OPTION (pfile, rliterals) = l->rliterals;
CPP_OPTION (pfile, user_literals) = l->user_literals;
}
/* Initialize library global state. */