/*
* Copyright 2011 JBoss, by Red Hat, 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 org.jboss.errai.ioc.rebind.ioc.bootstrapper;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.user.rebind.SourceWriter;
import org.jboss.errai.codegen.Context;
import org.jboss.errai.codegen.Statement;
import org.jboss.errai.codegen.Variable;
import org.jboss.errai.codegen.VariableReference;
import org.jboss.errai.codegen.builder.BlockBuilder;
import org.jboss.errai.codegen.builder.ClassStructureBuilder;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.meta.impl.build.BuildMetaClass;
import org.jboss.errai.common.client.framework.Assert;
import org.jboss.errai.ioc.client.BootstrapperInjectionContext;
import org.jboss.errai.ioc.rebind.ioc.injector.api.InjectionPoint;
import org.jboss.errai.ioc.rebind.ioc.injector.api.TypeDiscoveryListener;
import org.jboss.errai.ioc.rebind.ioc.metadata.JSR330QualifyingMetadataFactory;
import org.jboss.errai.ioc.rebind.ioc.metadata.QualifyingMetadataFactory;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.Stack;
/**
* @author Mike Brock <cbrock@redhat.com>
*/
public class IOCProcessingContext {
protected final Set<String> packages;
protected final Context context;
protected final BuildMetaClass bootstrapClass;
protected final ClassStructureBuilder bootstrapBuilder;
protected final Stack<BlockBuilder<?>> blockBuilder;
protected final List<Statement> appendToEnd;
protected final List<TypeDiscoveryListener> typeDiscoveryListeners;
protected final Set<MetaClass> discovered = new HashSet<MetaClass>();
protected final TreeLogger treeLogger;
protected final GeneratorContext generatorContext;
protected final SourceWriter writer;
protected final Variable contextVariable = Variable.create("injContext", BootstrapperInjectionContext.class);
protected final QualifyingMetadataFactory qualifyingMetadataFactory;
protected final boolean gwtTarget;
private IOCProcessingContext(final Builder builder) {
this.treeLogger = builder.treeLogger;
this.generatorContext = builder.generatorContext;
this.writer = builder.sourceWriter;
this.context = builder.context;
this.bootstrapClass = builder.bootstrapClassInstance;
this.bootstrapBuilder = builder.bootstrapBuilder;
this.blockBuilder = new Stack<BlockBuilder<?>>();
this.blockBuilder.push(builder.blockBuilder);
this.appendToEnd = new ArrayList<Statement>();
this.typeDiscoveryListeners = new ArrayList<TypeDiscoveryListener>();
this.packages = builder.packages;
this.qualifyingMetadataFactory = builder.qualifyingMetadataFactory;
this.gwtTarget = builder.gwtTarget;
}
public static class Builder {
private TreeLogger treeLogger;
private GeneratorContext generatorContext;
private SourceWriter sourceWriter;
private Context context;
private BuildMetaClass bootstrapClassInstance;
private ClassStructureBuilder bootstrapBuilder;
private BlockBuilder<?> blockBuilder;
private Set<String> packages;
private QualifyingMetadataFactory qualifyingMetadataFactory;
private boolean gwtTarget;
public static Builder create() {
return new Builder();
}
public Builder logger(TreeLogger treeLogger) {
this.treeLogger = treeLogger;
return this;
}
public Builder generatorContext(GeneratorContext generatorContext) {
this.generatorContext = generatorContext;
return this;
}
public Builder sourceWriter(SourceWriter sourceWriter) {
this.sourceWriter = sourceWriter;
return this;
}
public Builder context(Context context) {
this.context = context;
return this;
}
public Builder bootstrapClassInstance(BuildMetaClass bootstrapClassInstance) {
this.bootstrapClassInstance = bootstrapClassInstance;
return this;
}
public Builder bootstrapBuilder(ClassStructureBuilder classStructureBuilder) {
this.bootstrapBuilder = classStructureBuilder;
return this;
}
public Builder blockBuilder(BlockBuilder<?> blockBuilder) {
this.blockBuilder = blockBuilder;
return this;
}
public Builder packages(Set<String> packages) {
this.packages = packages;
return this;
}
public Builder qualifyingMetadata(QualifyingMetadataFactory qualifyingMetadataFactory) {
this.qualifyingMetadataFactory = qualifyingMetadataFactory;
return this;
}
public Builder gwtTarget(boolean gwtTarget) {
this.gwtTarget = gwtTarget;
return this;
}
public IOCProcessingContext build() {
Assert.notNull("treeLogger cannot be null", treeLogger);
Assert.notNull("sourceWriter cannot be null", sourceWriter);
Assert.notNull("context cannot be null", context);
Assert.notNull("bootstrapClassInstance cannot be null", bootstrapClassInstance);
Assert.notNull("bootstrapBuilder cannot be null", bootstrapBuilder);
Assert.notNull("blockBuilder cannot be null", blockBuilder);
Assert.notNull("packages cannot be null", packages);
if (qualifyingMetadataFactory == null) {
qualifyingMetadataFactory = new JSR330QualifyingMetadataFactory();
}
return new IOCProcessingContext(this);
}
}
public BlockBuilder<?> getBlockBuilder() {
return blockBuilder.peek();
}
public BlockBuilder<?> append(Statement statement) {
return getBlockBuilder().append(statement);
}
public void globalInsertBefore(Statement statement) {
blockBuilder.get(0).insertBefore(statement);
}
public BlockBuilder<?> globalAppend(Statement statement) {
return blockBuilder.get(0).append(statement);
}
public void pushBlockBuilder(BlockBuilder<?> blockBuilder) {
this.blockBuilder.push(blockBuilder);
}
public void popBlockBuilder() {
this.blockBuilder.pop();
if (this.blockBuilder.size() == 0) {
throw new AssertionError("block builder was over popped! something is wrong.");
}
}
public void appendToEnd(Statement statement) {
appendToEnd.add(statement);
}
public List<Statement> getAppendToEnd() {
return appendToEnd;
}
public BuildMetaClass getBootstrapClass() {
return bootstrapClass;
}
public ClassStructureBuilder getBootstrapBuilder() {
return bootstrapBuilder;
}
public Context getContext() {
return context;
}
public Set<String> getPackages() {
return packages;
}
@SuppressWarnings("UnusedDeclaration")
public TreeLogger getTreeLogger() {
return treeLogger;
}
public GeneratorContext getGeneratorContext() {
return generatorContext;
}
public VariableReference getContextVariableReference() {
return contextVariable.getReference();
}
public boolean isGwtTarget() {
return gwtTarget;
}
public QualifyingMetadataFactory getQualifyingMetadataFactory() {
return qualifyingMetadataFactory;
}
public void registerTypeDiscoveryListener(TypeDiscoveryListener discoveryListener) {
this.typeDiscoveryListeners.add(discoveryListener);
}
public void handleDiscoveryOfType(InjectionPoint injectionPoint) {
if (discovered.contains(injectionPoint.getType())) return;
for (TypeDiscoveryListener listener : typeDiscoveryListeners) {
listener.onDiscovery(this, injectionPoint);
}
discovered.add(injectionPoint.getType());
}
}