wvdirks
Member
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I’m experimenting with making my own schemedef, using the vhdl as a template. The language (Consistent Changes http://www.sil.org/computing/catalog/show_software.asp?id=4) uses ” c ” to initiate a comment in the code. The spaces around the c are important. The preceeding space isn’t necessary if it’s at the beginning of a line. The language doesn’t support continued comments. An end of line terminates the comment. In the schemedef file I changed:
<comments>
<line start=”–” continuation=”" />
</comments>
to be:
<comments>
<line start=” c ” />
</comments>
but it doesn’t work. If I take out the space then anything starting with “c” is matched. The space after the c is needed. Any ideas how I can make it work?
I have many more questions about schemedef but I’ll start with this one. 
Thanks.
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wvdirks
Member
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I should add that if start=” c ” then it only works if there’s two spaces between it and the previous character. It also works if the last character is a )
If I change start=”c ” then it doesn’t work at all.
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simon
Key Master
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Currently comment delimiters can be up to two characters long. Therefore, if your comment line is defined as:
<comments>
<line start="c " />
</comments>
then that should work, although obviously it may well match words that end in c? Have a go and let me know if it doesn’t work. It shouldn’t be too hard to increase the comment delimiter length to three.
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simon
Key Master
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Doh, missed your reply. It doesn’t work at all if it starts in c? Hmm. I’ll have a go later.
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simon
Key Master
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Ah, it looks like the lexer is looking for characters that might be part of a word before looking for comment delimiters. Currently, what you’re looking for won’t work because of this and the two character issue.
The three character thing will be the easiest fix, trying to work out whether an alphanumeric character is a word or a comment is a bit more complex.
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wvdirks
Member
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Hey, thanks Simon.
For some reason I get the best results when it’s set to ” c “. It just doesn’t match when it’s at the beginning of a line or if the previous char is alphanumeric.
Next… single and double quote strings
PN2 is so cool.
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