com.google.javascript.jscomp.FindRoyaleMXMLPropertyNamesToKeep Maven / Gradle / Ivy
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/*
* Copyright 2008 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.javascript.jscomp;
import java.util.Set;
import com.google.javascript.jscomp.NodeTraversal.AbstractPostOrderCallback;
import com.google.javascript.rhino.Node;
import org.apache.royale.compiler.mxml.IMXMLLanguageConstants;
public class FindRoyaleMXMLPropertyNamesToKeep extends AbstractPostOrderCallback {
private final AbstractCompiler compiler;
private Set propertyNamesToKeep;
public FindRoyaleMXMLPropertyNamesToKeep(AbstractCompiler compiler) {
this.compiler = compiler;
}
public void process(Node externs, Node root, Set propertyNamesToKeep) {
this.propertyNamesToKeep = propertyNamesToKeep;
NodeTraversal.traverse(compiler, root, this);
}
@Override
public void visit(NodeTraversal t, Node n, Node parent) {
checkForGenerateMXMLAttributes(t, n, parent);
checkForMXMLDescriptor(t, n, parent);
checkForBindings(t, n, parent);
}
private void checkForMXMLDescriptor(NodeTraversal t, Node n, Node parent) {
if(!n.isArrayLit()) {
return;
}
if(parent == null || !parent.isName()) {
return;
}
if(!"mxmldd".equals(parent.getQualifiedName())) {
return;
}
Node mxmlDescriptorNode = null;
if(parent.getGrandparent() != null
&& parent.getGrandparent().getGrandparent() != null
&& parent.getGrandparent().getGrandparent().getGrandparent() != null) {
mxmlDescriptorNode = parent.getGrandparent().getGrandparent().getGrandparent().getGrandparent();
}
if(mxmlDescriptorNode == null || !mxmlDescriptorNode.isStringKey() || mxmlDescriptorNode.getChildCount() == 0) {
return;
}
if(!"MXMLDescriptor".equals(mxmlDescriptorNode.getString())) {
return;
}
Node descriptorParent = mxmlDescriptorNode.getParent();
if(descriptorParent == null || !descriptorParent.isObjectLit()) {
return;
}
Node descriptorGP = mxmlDescriptorNode.getGrandparent();
if(descriptorGP == null) {
return;
}
if(descriptorGP.getIndexOfChild(descriptorParent) != 2) {
return;
}
Node prototype = descriptorGP.getChildBefore(descriptorParent);
String qualifiedName = prototype.getQualifiedName();
if(!qualifiedName.endsWith(".prototype")) {
return;
}
qualifiedName = qualifiedName.substring(0, qualifiedName.length() - 10);
Node defineProps = descriptorGP.getChildBefore(prototype);
if(!"Object.defineProperties".equals(defineProps.getQualifiedName())) {
return;
}
traverseMXMLAttributes(n, null);
}
private void checkForGenerateMXMLAttributes(NodeTraversal t, Node n, Node parent) {
if(!n.isGetProp()) {
return;
}
if(parent == null || !parent.isCall()) {
return;
}
if(!"this.generateMXMLAttributes".equals(n.getQualifiedName())) {
return;
}
if(parent.getChildCount() != 2) {
return;
}
Node arrayArg = parent.getChildAtIndex(1);
if(!arrayArg.isArrayLit()) {
return;
}
if(arrayArg.getChildCount() == 0) {
return;
}
Node functionNode = null;
if(parent.getGrandparent() != null) {
functionNode = parent.getGrandparent().getParent();
}
if(functionNode == null) {
return;
}
if(!functionNode.isFunction()) {
return;
}
String constructorName = functionNode.getOriginalName();
traverseMXMLAttributes(arrayArg, constructorName);
}
private void traverseMXMLAttributes(Node arrayArg, String qualifiedName) {
if(arrayArg.getChildCount() == 0) {
return;
}
boolean alreadyHadQualifiedName = qualifiedName != null;
int i = 0;
while(i < arrayArg.getChildCount()) {
if(qualifiedName == null) {
Node nameChild = arrayArg.getChildAtIndex(i);
i++;
if(!nameChild.isGetProp() && !nameChild.isName()) {
throwParseException(nameChild);
}
qualifiedName = nameChild.getQualifiedName();
}
Node numPropsChild = arrayArg.getChildAtIndex(i);
i++;
if(!numPropsChild.isNumber()) {
throwParseException(numPropsChild);
}
int numProps = (int) numPropsChild.getDouble();
int minNumPropsChildren = i + numProps * 3;
if(arrayArg.getChildCount() < minNumPropsChildren) {
throwParseException(arrayArg);
}
while(i < minNumPropsChildren) {
Node nameNode = arrayArg.getChildAtIndex(i);
i++;
String propName = null;
if (nameNode.isString()) {
//no parse exception if it's not a string because non-string
//values are allowed when using -mxml-reflect-object-property=true
propName = nameNode.getString();
propertyNamesToKeep.add(propName);
}
Node propTypeNode = arrayArg.getChildAtIndex(i);
i++;
if((IMXMLLanguageConstants.ATTRIBUTE_ID.equals(propName) || "_id".equals(propName)) && propTypeNode.isTrue()) {
Node valueNode = arrayArg.getChildAtIndex(i);
if(valueNode.isString()) {
propertyNamesToKeep.add(valueNode.getString());
}
}
if(!propTypeNode.isTrue()) {
Node valueNode = arrayArg.getChildAtIndex(i);
i++;
if(valueNode.isArrayLit()) {
traverseMXMLAttributes(valueNode, null);
}
}
else {
i++; //skip value
}
}
if(i >= arrayArg.getChildCount()) {
throwParseException(arrayArg);
}
Node numStylesChild = arrayArg.getChildAtIndex(i);
i++;
if(!numStylesChild.isNumber()) {
throwParseException(numStylesChild);
}
int numStyles = (int) numStylesChild.getDouble();
if(numStyles != 0) {
throwParseException(numStylesChild);
}
if(i >= arrayArg.getChildCount()) {
throwParseException(arrayArg);
}
Node numEventsChild = arrayArg.getChildAtIndex(i);
i++;
if(!numEventsChild.isNumber()) {
throwParseException(numEventsChild);
}
int numEvents = (int) numEventsChild.getDouble();
i += numEvents * 2;
if(!alreadyHadQualifiedName) {
if(i >= arrayArg.getChildCount()) {
throwParseException(arrayArg);
}
Node childrenChild = arrayArg.getChildAtIndex(i);
i++;
if(!childrenChild.isNull() && !childrenChild.isArrayLit()) {
throwParseException(childrenChild);
}
if(childrenChild.isArrayLit()) {
traverseMXMLAttributes(childrenChild, null);
}
qualifiedName = null;
}
}
}
private void traverseWatchers(Node n, int startIndex) {
if(n.isNull()) {
//this is fine, just skip it
return;
}
if(!n.isArrayLit()) {
throwParseException(n);
}
int i = startIndex;
while(i < n.getChildCount()) {
Node indexNode = n.getChildAtIndex(i);
i++;
if(indexNode.isNull()) {
//this is the last child watcher
return;
}
if(!indexNode.isNumber()) {
throwParseException(indexNode);
}
Node watcherTypeNode = n.getChildAtIndex(i);
i++;
if(!watcherTypeNode.isNumber()) {
throwParseException(watcherTypeNode);
}
int watcherType = (int) watcherTypeNode.getDouble();
switch(watcherType) {
case 0: { //function
Node nameNode = n.getChildAtIndex(i);
i++;
if(!nameNode.isString()) {
throwParseException(nameNode);
}
String propName = nameNode.getString();
propertyNamesToKeep.add(propName);
i++; //skip function
i++; //skip event names
i++; //skip binding indices
break;
}
case 1: { //static property
Node nameNode = n.getChildAtIndex(i);
i++;
if(!nameNode.isString()) {
throwParseException(nameNode);
}
String propName = nameNode.getString();
propertyNamesToKeep.add(propName);
i++; //skip event names
i++; //skip binding indices
i++; //skip property getter function
i++; //skip mname
break;
}
case 2: { //property
Node nameNode = n.getChildAtIndex(i);
i++;
if(!nameNode.isString()) {
throwParseException(nameNode);
}
String propName = nameNode.getString();
propertyNamesToKeep.add(propName);
i++; //skip event names
i++; //skip binding indices
i++; //skip property getter function
break;
}
case 3: { //xml
Node nameNode = n.getChildAtIndex(i);
i++;
if(!nameNode.isString()) {
throwParseException(nameNode);
}
String propName = nameNode.getString();
propertyNamesToKeep.add(propName);
i++; //skip binding indices\
break;
}
default: { //unknown!
throwParseException(watcherTypeNode);
}
}
Node watcherChildren = n.getChildAtIndex(i);
i++;
traverseWatchers(watcherChildren, 0);
}
}
private void throwParseException(Node unexpectedNode) {
throw new RuntimeException("Find MXML property names to keep parse failure: " + unexpectedNode);
}
private void checkForBindings(NodeTraversal t, Node n, Node parent) {
if(!n.isGetProp()) {
return;
}
if(parent == null || !parent.isAssign() || parent.getChildCount() < 2) {
return;
}
String qualifiedName = n.getQualifiedName();
if(qualifiedName == null) {
return;
}
if(!qualifiedName.endsWith(".prototype._bindings")) {
return;
}
Node bindingsNode = parent.getChildAtIndex(1);
if(!bindingsNode.isArrayLit()) {
throwParseException(bindingsNode);
}
int i = 0;
Node firstChild = bindingsNode.getChildAtIndex(i);
if(firstChild.isGetProp()) {
i++; //skip inherited bindings
}
Node numBindingsChild = bindingsNode.getChildAtIndex(i);
i++;
if(!numBindingsChild.isNumber()) {
throwParseException(numBindingsChild);
}
int numBindings = (int) numBindingsChild.getDouble();
int minNumBindingsChildren = i + numBindings * 3;
if(bindingsNode.getChildCount() < minNumBindingsChildren) {
throwParseException(bindingsNode);
}
while(i < minNumBindingsChildren) {
Node sourceNode = bindingsNode.getChildAtIndex(i);
i++;
if(sourceNode.isString()) {
String propName = sourceNode.getString();
propertyNamesToKeep.add(propName);
}
else if(sourceNode.isArrayLit()) {
for(int j = 0; j < sourceNode.getChildCount(); j++) {
Node child = sourceNode.getChildAtIndex(j);
if(child.isString()) {
String propName = child.getString();
if(!propName.contains(".")) {
propertyNamesToKeep.add(propName);
}
}
}
}
i++; //skip event
Node targetNode = bindingsNode.getChildAtIndex(i);
i++;
if(targetNode.isString()) {
String propName = targetNode.getString();
propertyNamesToKeep.add(propName);
}
else if(targetNode.isArrayLit()) {
for(int j = 0; j < sourceNode.getChildCount(); j++) {
Node child = sourceNode.getChildAtIndex(j);
if(child.isString()) {
String propName = child.getString();
if(!propName.contains(".")) {
propertyNamesToKeep.add(propName);
}
}
}
}
}
traverseWatchers(bindingsNode, i);
}
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