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dust resolve reference helper created and refactor if to use it #73

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merged 1 commit into from Jul 2, 2012
Merged

dust resolve reference helper created and refactor if to use it #73

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30 changes: 18 additions & 12 deletions lib/dust-helpers.js
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Expand Up @@ -72,22 +72,28 @@ var helpers = {
contextDump: function(chunk, context, bodies) {
_console.log(JSON.stringify(context.stack));
return chunk;
},// Utility helping to resolve dust references in the given chunk
tap: function( input, chunk, context ){
// return given input if there is no dust reference to resolve
var output = input;
// dust compiles a string to function, if there are references
if( typeof input === "function"){
output = '';
chunk.tap(function(data){
output += data;
return '';
}).render(input, context).untap();
if( output === '' ){
output = false;
}
}
return output;
},

"if": function( chunk, context, bodies, params ){
if( params && params.cond ){
var cond = params.cond;

// resolve dust references in the expression
if( typeof cond === "function" ){
cond = '';
chunk.tap( function( data ){
cond += data;
return '';
} ).render( params.cond, context ).untap();
if( cond === '' ){
cond = false;
}
}
cond = this.tap(cond, chunk, context);
// eval expressions with no dust references
if( eval( cond ) ){
return chunk.render( bodies.block, context );
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