/*
* Copyright 2008 Google Inc.
*
* 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.gwt.dev.jjs.impl;
import com.google.gwt.dev.jjs.SourceInfo;
import com.google.gwt.dev.jjs.ast.Context;
import com.google.gwt.dev.jjs.ast.JBooleanLiteral;
import com.google.gwt.dev.jjs.ast.JCharLiteral;
import com.google.gwt.dev.jjs.ast.JDoubleLiteral;
import com.google.gwt.dev.jjs.ast.JFloatLiteral;
import com.google.gwt.dev.jjs.ast.JIntLiteral;
import com.google.gwt.dev.jjs.ast.JLongLiteral;
import com.google.gwt.dev.jjs.ast.JNullLiteral;
import com.google.gwt.dev.jjs.ast.JStringLiteral;
import com.google.gwt.dev.jjs.ast.JVisitor;
import com.google.gwt.dev.js.ast.JsBooleanLiteral;
import com.google.gwt.dev.js.ast.JsExpression;
import com.google.gwt.dev.js.ast.JsNameRef;
import com.google.gwt.dev.js.ast.JsNullLiteral;
import com.google.gwt.dev.js.ast.JsNumberLiteral;
import com.google.gwt.dev.js.ast.JsObjectLiteral;
import com.google.gwt.dev.js.ast.JsPropertyInitializer;
import com.google.gwt.dev.js.ast.JsStringLiteral;
import com.google.gwt.dev.js.ast.JsVisitable;
import com.google.gwt.lang.LongLib;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Stack;
/**
* Translates Java literals into JavaScript literals.
*/
public class GenerateJavaScriptLiterals extends JVisitor {
private final Stack<JsVisitable> nodeStack = new Stack<JsVisitable>();
@Override
public final void endVisit(JBooleanLiteral x, Context ctx) {
push(JsBooleanLiteral.get(x.getValue()));
}
@Override
public final void endVisit(JCharLiteral x, Context ctx) {
push(new JsNumberLiteral(x.getSourceInfo(), x.getValue()));
}
@Override
public final void endVisit(JDoubleLiteral x, Context ctx) {
push(new JsNumberLiteral(x.getSourceInfo(), x.getValue()));
}
@Override
public final void endVisit(JFloatLiteral x, Context ctx) {
push(new JsNumberLiteral(x.getSourceInfo(), x.getValue()));
}
@Override
public final void endVisit(JIntLiteral x, Context ctx) {
push(new JsNumberLiteral(x.getSourceInfo(), x.getValue()));
}
@Override
public void endVisit(JLongLiteral x, Context ctx) {
SourceInfo sourceInfo = x.getSourceInfo();
int[] intArray = LongLib.getAsIntArray(x.getValue());
JsObjectLiteral objectLit = new JsObjectLiteral(sourceInfo);
List<JsPropertyInitializer> inits = objectLit.getPropertyInitializers();
JsExpression label0 = new JsNameRef(sourceInfo, "l");
JsExpression label1 = new JsNameRef(sourceInfo, "m");
JsExpression label2 = new JsNameRef(sourceInfo, "h");
JsExpression value0 = new JsNumberLiteral(sourceInfo, intArray[0]);
JsExpression value1 = new JsNumberLiteral(sourceInfo, intArray[1]);
JsExpression value2 = new JsNumberLiteral(sourceInfo, intArray[2]);
inits.add(new JsPropertyInitializer(sourceInfo, label0, value0));
inits.add(new JsPropertyInitializer(sourceInfo, label1, value1));
inits.add(new JsPropertyInitializer(sourceInfo, label2, value2));
push(objectLit);
}
@Override
public final void endVisit(JNullLiteral x, Context ctx) {
push(JsNullLiteral.INSTANCE);
}
@Override
public final void endVisit(JStringLiteral x, Context ctx) {
push(new JsStringLiteral(x.getSourceInfo(), x.getValue()));
}
@SuppressWarnings("unchecked")
public final <T extends JsVisitable> T peek() {
return (T) nodeStack.peek();
}
@SuppressWarnings("unchecked")
protected final <T extends JsVisitable> T pop() {
return (T) nodeStack.pop();
}
protected final <T extends JsVisitable> List<T> popList(int count) {
List<T> list = new ArrayList<T>();
while (count > 0) {
T item = this.<T> pop();
if (item != null) {
list.add(item);
}
--count;
}
Collections.reverse(list);
return list;
}
protected final <T extends JsVisitable> void popList(List<T> collection, int count) {
List<T> list = new ArrayList<T>();
while (count > 0) {
T item = this.<T> pop();
if (item != null) {
list.add(item);
}
--count;
}
Collections.reverse(list);
collection.addAll(list);
}
protected final <T extends JsVisitable> void push(T node) {
nodeStack.push(node);
}
public JsNameRef convertQualifiedPrototypeToNameRef(SourceInfo sourceInfo, String jsPrototype) {
String parts[] = jsPrototype.split("\\.");
JsNameRef toReturn = new JsNameRef(sourceInfo, parts[parts.length - 1]);
JsNameRef ref = toReturn;
for (int i = parts.length - 2; i >= 0; i--) {
JsNameRef qualifier = new JsNameRef(sourceInfo, parts[i]);
ref.setQualifier(qualifier);
ref = qualifier;
}
return toReturn;
}
}