Hello,
I recently started writing an interpreter for the WAEBRIC language, which is
a language for generating XHTML code based on self defined function blocks.
However, I keep getting runtime exceptions when running my parser. The
following program interprets fine:
module simple
def main
html { title "Hello world"; }
end
But when I start adding attributes or arguments to my *title* tag the
exceptions start occuring, for example:
html { title#myidattribute "Hello world"; }
My rewrite rules are probably specified incorrectly, but I cannot seem to
figure out how to fix the problem. If somebody could give me some pointers
that would be greatly appreciated. Below is the related grammar:
statement: markup+ statement -> ^( markup markup* ',' statement )
| ... ;
markup: designator arguments? ;
designator: IDCON attribute* ;
attribute: '#' IDCON // ID attribute
| '.' IDCON // Class attribute
| '$' IDCON // Name attribute
| ':' IDCON // Type attribute
| '@' NATCON // Width attribute
| '@' NATCON '%' NATCON; // Width-height attribute
arguments: '(' argument? ( ',' argument )* ')' ;
argument: expression ;
URL:
http://code.google.com/p/waebric/source/browse/#svn/trunk/implementations/java/antlr/src/main/grammar
Thanks in advance,
Jeroen
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