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Code Issues Releases Wiki Activity

Refactored JavaScriptParseTree handling of output array

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This commit is contained in:
Jeremy Ruston 2012-01-17 15:20:46 +00:00
parent f10d58ed2b
commit 8cfff2c2fa
1 changed files with 49 additions and 50 deletions
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99
js/JavaScriptParseTree.js
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@ -27,112 +27,111 @@ var JavaScriptParseTree = function(tree) {
// Render the entire JavaScript tree object to JavaScript source code // Render the entire JavaScript tree object to JavaScript source code
JavaScriptParseTree.prototype.render = function() { JavaScriptParseTree.prototype.render = function() {
this.output = []; var output = [];
this.renderSubTree(this.tree); this.renderSubTree(output,this.tree);
var r = this.output.join(""); var r = output.join("");
this.output = null;
return r; return r;
}; };
// Render a subtree of the parse tree to an array of fragments of JavaScript source code // Render a subtree of the parse tree to an array of fragments of JavaScript source code
JavaScriptParseTree.prototype.renderSubTree = function(tree) { JavaScriptParseTree.prototype.renderSubTree = function(output,tree) {
for(var t=0; t<tree.length; t++) { for(var t=0; t<tree.length; t++) {
if(t) { if(t) {
this.output.push(";\n"); this.output.push(";\n");
} }
this.renderNode(tree[t]); this.renderNode(output,tree[t]);
} }
}; };
// Compile a JavaScript node to an array of fragments of JavaScript source code // Compile a JavaScript node to an array of fragments of JavaScript source code
JavaScriptParseTree.prototype.renderNode = function(node) { JavaScriptParseTree.prototype.renderNode = function(output,node) {
var p; var p;
switch(node.type) { switch(node.type) {
case "StringLiteral": case "StringLiteral":
this.output.push(utils.stringify(node.value)); output.push(utils.stringify(node.value));
break; break;
case "StringLiterals": case "StringLiterals":
this.output.push(utils.stringify(node.value.join(""))); output.push(utils.stringify(node.value.join("")));
break; break;
case "FunctionCall": case "FunctionCall":
this.output.push("("); output.push("(");
this.renderNode(node.name); this.renderNode(output,node.name);
this.output.push(")("); output.push(")(");
for(p=0; p<node["arguments"].length; p++) { for(p=0; p<node["arguments"].length; p++) {
if(p) { if(p) {
this.output.push(","); output.push(",");
} }
this.renderNode(node["arguments"][p]); this.renderNode(output,node["arguments"][p]);
} }
this.output.push(")"); output.push(")");
break; break;
case "PropertyAccess": case "PropertyAccess":
this.renderNode(node.base); this.renderNode(output,node.base);
if(typeof node.name === "string") { if(typeof node.name === "string") {
this.output.push("." + node.name); output.push("." + node.name);
} else { } else {
this.output.push("["); output.push("[");
this.renderNode(node.name); this.renderNode(output,node.name);
this.output.push("]"); output.push("]");
} }
break; break;
case "ArrayLiteral": case "ArrayLiteral":
this.output.push("["); output.push("[");
for(p=0; p<node.elements.length; p++) { for(p=0; p<node.elements.length; p++) {
if(p) { if(p) {
this.output.push(","); output.push(",");
} }
this.renderNode(node.elements[p]); this.renderNode(output,node.elements[p]);
} }
this.output.push("]"); output.push("]");
break; break;
case "Variable": case "Variable":
this.output.push(node.name); output.push(node.name);
break; break;
case "ObjectLiteral": case "ObjectLiteral":
this.output.push("{"); output.push("{");
for(p=0; p<node.properties.length; p++) { for(p=0; p<node.properties.length; p++) {
if(p) { if(p) {
this.output.push(","); output.push(",");
} }
this.renderNode(node.properties[p]); this.renderNode(output,node.properties[p]);
} }
this.output.push("}"); output.push("}");
break; break;
case "PropertyAssignment": case "PropertyAssignment":
this.output.push(node.name); output.push(node.name);
this.output.push(":"); output.push(":");
this.renderNode(node.value); this.renderNode(output,node.value);
break; break;
case "BinaryExpression": case "BinaryExpression":
this.output.push("("); output.push("(");
this.renderNode(node.left); this.renderNode(output,node.left);
this.output.push(")"); output.push(")");
this.output.push(node.operator); output.push(node.operator);
this.output.push("("); output.push("(");
this.renderNode(node.right); this.renderNode(output,node.right);
this.output.push(")"); output.push(")");
break; break;
case "NumericLiteral": case "NumericLiteral":
this.output.push(node.value); output.push(node.value);
break; break;
case "Function": case "Function":
this.output.push("(function "); output.push("(function ");
if(node.name !== null) { if(node.name !== null) {
this.output.push(node.name); output.push(node.name);
} }
this.output.push("("); output.push("(");
this.output.push(node.params.join(",")); output.push(node.params.join(","));
this.output.push("){"); output.push("){");
this.renderSubTree(node.elements); this.renderSubTree(output,node.elements);
this.output.push("})"); output.push("})");
break; break;
case "ReturnStatement": case "ReturnStatement":
this.output.push("return "); output.push("return ");
this.renderNode(node.value); this.renderNode(output,node.value);
break; break;
case "This": case "This":
this.output.push("this"); output.push("this");
break; break;
default: default:
console.log(node); console.log(node);