/*
* Copyright 2010 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;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.linker.ArtifactSet;
import com.google.gwt.dev.cfg.BindingProperty;
import com.google.gwt.dev.cfg.BindingProps;
import com.google.gwt.dev.cfg.ConfigProps;
import com.google.gwt.dev.cfg.ModuleDef;
import com.google.gwt.dev.cfg.PropertyPermutations;
import com.google.gwt.dev.cfg.Rules;
import com.google.gwt.dev.javac.CompilationState;
import com.google.gwt.dev.javac.StandardGeneratorContext;
import com.google.gwt.dev.jdt.RebindOracle;
import com.google.gwt.dev.jdt.RebindPermutationOracle;
import com.google.gwt.dev.shell.StandardRebindOracle;
import com.google.gwt.dev.util.Util;
import com.google.gwt.dev.util.collect.HashSet;
import com.google.gwt.dev.util.log.speedtracer.CompilerEventType;
import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger;
import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger.Event;
import java.util.Set;
/**
* Implementation of RebindPermutationOracle used by Precompile.
*/
class DistillerRebindPermutationOracle implements RebindPermutationOracle {
private CompilationState compilationState;
private StandardGeneratorContext generatorContext;
private final Permutation[] permutations;
private final RebindOracle[] rebindOracles;
public DistillerRebindPermutationOracle(CompilerContext compilerContext,
CompilationState compilationState, ArtifactSet generatorArtifacts,
PropertyPermutations perms) {
ModuleDef module = compilerContext.getModule();
this.compilationState = compilationState;
permutations = new Permutation[perms.size()];
rebindOracles = new RebindOracle[perms.size()];
generatorContext = new StandardGeneratorContext(
compilerContext, compilationState, generatorArtifacts, true);
BindingProperty[] orderedProps = perms.getOrderedProperties();
ConfigProps config = new ConfigProps(module);
Rules rules = module.getRules();
for (int i = 0; i < rebindOracles.length; ++i) {
BindingProps props = new BindingProps(orderedProps, perms.getOrderedPropertyValues(i), config);
rebindOracles[i] = new StandardRebindOracle(props.toPropertyOracle(), rules,
generatorContext);
permutations[i] = new Permutation(i, props);
}
}
@Override
public void clear() {
generatorContext.clear();
compilationState = null;
generatorContext = null;
}
@Override
public String[] getAllPossibleRebindAnswers(TreeLogger logger,
String requestTypeName) throws UnableToCompleteException {
String msg = "Computing all possible rebind results for '"
+ requestTypeName + "'";
logger = logger.branch(TreeLogger.DEBUG, msg, null);
Set<String> answers = new HashSet<String>();
Event getAllRebindsEvent = SpeedTracerLogger.start(CompilerEventType.GET_ALL_REBINDS);
for (int i = 0; i < getPermutationCount(); ++i) {
String resultTypeName = rebindOracles[i].rebind(logger, requestTypeName);
answers.add(resultTypeName);
// Record the correct answer into each permutation.
permutations[i].putRebindAnswer(requestTypeName, resultTypeName);
}
String[] result = Util.toArray(String.class, answers);
getAllRebindsEvent.end();
return result;
}
@Override
public CompilationState getCompilationState() {
return compilationState;
}
@Override
public StandardGeneratorContext getGeneratorContext() {
return generatorContext;
}
public int getPermutationCount() {
return rebindOracles.length;
}
public Permutation[] getPermutations() {
return permutations;
}
}