I copy-pasted the addr-spec grammar from rfc5322 and was converting it to
Xtreams format. One PITA was converting all the decimal values to hex e.g.
"%d97" -> "\x000061". I wanted to extend the Xtream grammar to handle
"/d97". I extended PEGParserGenerator and PEGParserParser with the
following:
Escape: backslash character: character hexes: hexes
...
character = $d ifTrue: [^(String withAll: hexes) asNumber
asCharacter]
But I couldn't figure out how to put this extension into action.
PEGParser>>parserBootstrap has a comment "This method was generated with the
following code: PEGParser parserPEG parse: 'Grammar' stream: PEGParser
grammarPEG actor: PEGParserGenerator new", but evaluating that after
extending produced the same output as the original. What am I missing?
Thanks.
-----
Cheers,
Sean
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