/*
* Copyright 2013 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.fuzzing;
import com.google.common.collect.Sets;
import com.google.javascript.rhino.Node;
import com.google.javascript.rhino.Token;
import java.util.Arrays;
import java.util.Set;
/**
* UNDER DEVELOPMENT. DO NOT USE!
*/
class ObjectFuzzer extends AbstractFuzzer {
ObjectFuzzer(FuzzingContext context) {
super(context);
}
/* (non-Javadoc)
* @see com.google.javascript.jscomp.fuzzing.AbstractFuzzer#generate(int)
*/
@Override
protected Node generate(int budget, Set<Type> types) {
Node objectLit = new Node(Token.OBJECTLIT);
int remainingBudget = budget - 1;
if (remainingBudget < 0) {
remainingBudget = 0;
}
// an object property needs at least two nodes
int objectLength = generateLength(remainingBudget / 2);
if (objectLength == 0) {
return objectLit;
}
// reserve budget for keys
remainingBudget -= objectLength;
ExpressionFuzzer[] fuzzers = new ExpressionFuzzer[objectLength];
Arrays.fill(fuzzers,
new ExpressionFuzzer(context));
Node[] values = distribute(remainingBudget, fuzzers);
for (int i = 0; i < objectLength; i++) {
String name;
if (context.random.nextInt(2) == 0) {
name = context.snGenerator.getPropertyName();
} else {
name = String.valueOf(context.snGenerator.getRandomNumber());
}
Node key = Node.newString(Token.STRING_KEY, name);
key.addChildrenToFront(values[i]);
objectLit.addChildToBack(key);
}
return objectLit;
}
/* (non-Javadoc)
* @see com.google.javascript.jscomp.fuzzing.AbstractFuzzer#isEnough(int)
*/
@Override
protected boolean isEnough(int budget) {
return budget >= 1;
}
/* (non-Javadoc)
* @see com.google.javascript.jscomp.fuzzing.AbstractFuzzer#getConfigName()
*/
@Override
protected String getConfigName() {
return "object";
}
@Override
protected Set<Type> supportedTypes() {
return Sets.immutableEnumSet(Type.OBJECT);
}
}