Created
May 29, 2012 20:22
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ZeParser tagliteral post to DOM syntax
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// requires ZeParser (see repo) | |
// input is a string, your js input with tagliterals | |
function compile(input){ | |
var tree = []; | |
var tokenizer = new Tokenizer(input); | |
tokenizer.tagLiterals = true; // enable tag literals in the engine | |
var parser = new ZeParser(input, tokenizer, tree); | |
parser.parse(); | |
tokenizer.fixValues(); | |
return tokenizer.wtree.map(function(t){ | |
if (t.name == 15) { | |
return (function reify(node, _indent){ | |
// first call, initialize | |
if (!_indent) { | |
var lineStart = input.lastIndexOf('\n', t.start)+1; | |
var r = /\s*/g; | |
r.lastIndex = lineStart; | |
_indent = r.exec(input)+' '; | |
} | |
var arr = []; | |
arr.push('var e = document.createElement(\''+node.name+'\');'); | |
Object.keys(node.attributes).forEach(function(key){ | |
if (node.attributes[key] instanceof Array) { | |
if (!node.attributes[key][node.attributes[key].length-1]) node.attributes[key].length--; // remove last element, it's the empty string | |
arr.push( | |
'e.setAttribute(\''+key+'\', '+ | |
node.attributes[key].map(function(s,i){ | |
if (i%2) { // uneven, js | |
return '('+(s||'""')+')'; | |
} else { // even, string | |
return '\''+s.replace(/\\(.|$)/g, '$1').replace(/(['\\])/g,'\\$1')+'\''; | |
} | |
}).join('+')+ | |
');' | |
); | |
} | |
else if (typeof node.attributes[key] != 'string') arr.push('e.setAttribute(\''+key+'\', true);'); | |
else arr.push('e.setAttribute(\''+key+'\', \''+node.attributes[key].replace(/\\(.|$)/g, '$1').replace(/(['\\])/g,'\\$1')+'\');'); | |
}); | |
if (!node.unary && node.children.length) { | |
node.children.forEach(function(c){ | |
if (typeof c == 'string') { | |
arr.push('e.appendChild(document.createTextNode(\''+c.replace(/\\(.|$)/g, '$1').replace(/(['\\])/g,'\\$1').replace(/\n/g,'\\n')+'\'));'); | |
} | |
else if (c instanceof Array) { | |
arr.push('e.appendChild(document.createTextNode('+c.map(function(s,i){ | |
if (i%2) { // uneven, js | |
return '('+(s||'""')+')'; | |
} else { // even, string | |
return '\''+s.replace(/\\(.|$)/g, '$1').replace(/(['\\])/g,'\\$1')+'\''; | |
} | |
}).join('+')+'));'); | |
} | |
else arr.push('e.appendChild('+reify(c,_indent+' ')+');'); | |
}); | |
} | |
arr.push('return e;\n'); | |
return 'new function(){\n'+_indent+arr.join('\n'+_indent)+_indent.slice(0,-2)+'}'; | |
})(t.root); | |
} | |
return t.value; | |
}).join(''); | |
} |
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