I've developed a grammar (with help from various people of course) for quoted strings: http://scsys.co.uk:8002/424926
Requirements: o Strings must be quoted o Strings are either single or double quoted o The escape character is \ o If the string is single quoted, internal single quotes must be escaped o If the string is double quoted, internal double quotes must be escaped o Any other character may be escaped o If a character is escaped, the escape character is preserved in the output o Empty strings are accepted ToDo: Make it work with utf8. Does anyone see problems, or other input strings which should be tested? Jeffrey: This is one of the plug-in grammars Jean-Damien and I talked about recently. Any chance you can implement: my $source = <<'END_OF_GRAMMAR'; ... :include /my/grammars/quoted.strings.bnf ... END_OF_GRAMMAR to include a suitable[*] grammar in situ within a grammar declaration? [*] Obviously, here that just means the prefix: :default ::= action => [values] lexeme default = latm => 1 # Longest Acceptable Token Match. :start ::= string_token and the suffix: # Boilerplate. :discard ~ whitespace whitespace ~ [\s]+ END_OF_GRAMMAR would not be present in the include file. -- You received this message because you are subscribed to the Google Groups "marpa parser" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
