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* discover/grub2: improve handling of word & delimiter tokensJeremy Kerr2014-12-011-34/+42
| | | | | | | | | | | | | | | | | | | | | | | Currently, the delimiter token handling is a little fragile: we try to ignore non-inter-word delimiters in the lexer with a selective set of regexes on the possible delimiter characters. This means we don't need to handle potential delimiters in every grammar rule, but there are other situations (not regex-able) where we may see delimters, and this will cause a parse error. Instead of relying on the regex behaviour, we have an 'inter_word' flag, which is set when we see the first word token, and cleared when we see an end-of-line token. We only emit TOKEN_DELIM when this flag is set. This means that we only get the delim tokens when they're required - when we're looking for word separators (becuase WORD DELIM WORD is distinct from WORD WORD - eg "linux /vmlinux" and "x$var"). We add a few new tests for the "menuentry" and "if" syntax, with different delimiter configurations. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* discover/grub2: fix incorrect prototype in yyerrorJeremy Kerr2014-12-011-4/+4
| | | | | | | Because we're using two parse-params, we need to add the scanner argument to yyerror. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* discover/grub2: distinguish parser.h from grub2/parser.hJeremy Kerr2014-08-051-0/+347
'make distcheck' will do a 'make all' srcdir == objdir, then later a 'make check' sith srcdir != objdir. Since gcc's cpp always assumes that a source file's directory is first in the include paths, we may see discover/parser.h included when we wanted the generated discover/grub2/parser.h. This change renames the grub2 lexer and parser files, to work-around this behaviour, and fix 'make distcheck'. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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