* cpphash.h (HASHSTEP): Take character rather than pointer

	to character.
	(_cpp_check_directive, _cpp_check_linemarker): Update prototypes.

	* cpphash.c (cpp_loookup): Update for new HASHSTEP.

	* cpplex.c (auto_expand_name_space, trigraph_replace,
	backslash_start, handle_newline, parse_name, INIT_TOKEN_STR,
	IMMED_TOKEN, PREV_TOKEN_TYPE, PUSH_TOKEN, REVISE_TOKEN,
	BACKUP_TOKEN, BACKUP_TRIGRAPH, MIGHT_BE_DIRECTIVE,
	KNOWN_DIRECTIVE): Delete.

	(handle_newline, check_long_token, skip_escaped_newlines,
	unterminated): New functions.
	(ACCEPT_CHAR, SAVE_STATE, RESTORE_STATE): New macros.

	(parse_identifier): Was parse_name, new implementation.
	(skip_line_comment, skip_block_comment, skip_whitespace,
	parse_number, parse_string, trigraph_ok, save_comment,
	adjust_column, _cpp_get_line): New implementations.

	(lex_token): New function.  Lexes a token at a time, looking
	forwards.  Contains most of the guts of the old lex_line.
	(lex_line): New implementation, using lex_token to obtain
	individual tokens.
	(cpp_scan_buffer): Use the token's line, not the list's line.

	* cpplib.c (_cpp_check_directive, _cpp_check_linemarker):
	 New implementations.
	(do_assert): Don't bother setting the answer's list's line.
	(cpp_push_buffer): Initialise new pfile and read_ahead members
	of struct cpp_buffer.

	* cpplib.h (cppchar_t): New typedef.
	(struct cpp_buffer): read_ahead, pfile and col_adjust are
	new members.
	(struct lexer_state): New structure that determines the state
	and behaviour of the lexer.
	(IN_DIRECTIVE, KNOWN_DIRECTIVE): New macros.
	(struct cpp_reader): New member "state". Rename
	multiline_string_line and multiline_string_column. Delete
	col_adjust, in_lex_line members.
	(CPP_BUF_COLUMN): Update.

	* gcc.dg/cpp/cmdlne-C.c: Remove bogus warning test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36509 138bc75d-0d04-0410-961f-82ee72b054a4

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