Quirky

Hey I have this script:

I’m trying to run it on [url]http://www.w3schools.com/js/tryit.asp?filename=tryjs_browser[/url]. I haven’t tried my source yet, but I don’t think it will make a difference (I just want to keep this out of my code until it’s production ready). For some reason if I remove the <b> tags from the output, it comes out garbled.

[CODE]
<script type=”text/javascript”>

function matchParen(str){
num_rp = null;
var count;
for(count=0; num_rp!==0; count++){
if(str[count]=='(‘) ++num_rp;
else if(str[count]==’)’) –num_rp;
}
return count;
}

/*filler stuff for test purposes*/
function Dodec(f){ return true; }
Boolean.prototype.cond = function(q){return !this || q}
k=’a’, x=’b’, y=’d’, n=’k’, r=’k’;
/*filler end*/

ex = “Dodec(k)→((Dodec(x)→Dodec(y))→(Dodec(n)→Dodec(r)))”;

while(ex.match(‘→’)){
m = ex.match(/→.+/).toString();
pos = matchParen(m)+ex.search(‘→’)+6;
ex = ex.replace(‘&#8594;’,'<b>.cond(</b>’);
ex = ex.substring(0,pos)+'<b>)</b>’+ex.substring(pos);
document.write(ex+”<BR />”);
}
ex = ex.replace(/<.?b>/g,”);

</script>[/CODE]

Also, if you know how to optimize the code that would really be helpful.

Additionally, any other methods on creating a new “operator” would be insightful. I’m just using OO design for now, but I’m trying to create a conditional operator ‘&#8594;’ so that:

[CODE]
P Q P→Q (Algorithm: !P || Q)
T T T
T F F
F T T
F F T
[/CODE]

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