genmatch.c (parser::peek, [...]): Add argument to tell how many tokens to peek ahead...

genmatch.c (parser::peek, [...]): Add argument to tell how many tokens to peek ahead (default 1).

2015-07-15  Richard Biener  <rguenther@suse.de>

	* genmatch.c (parser::peek, parser::peek_ident): Add argument
	to tell how many tokens to peek ahead (default 1).
	(parser::eat_token, parser::eat_ident): Return token consumed.
	(parser::parse_result): Parse new switch statement.
	* match.pd: Use case statements where appropriate.

From-SVN: r225809