/*
* Copyright (C) 2011 Red Hat, Inc. and/or its affiliates.
*
* 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.codegen.builder.impl;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.jboss.errai.codegen.Context;
import org.jboss.errai.codegen.DefModifiers;
import org.jboss.errai.codegen.Modifier;
import org.jboss.errai.codegen.Statement;
import org.jboss.errai.codegen.Variable;
import org.jboss.errai.codegen.builder.BuildCallback;
import org.jboss.errai.codegen.builder.FieldBuildInitializer;
import org.jboss.errai.codegen.builder.FieldBuildName;
import org.jboss.errai.codegen.builder.FieldBuildStart;
import org.jboss.errai.codegen.builder.FieldBuildType;
import org.jboss.errai.codegen.builder.Finishable;
import org.jboss.errai.codegen.builder.callstack.LoadClassReference;
import org.jboss.errai.codegen.literal.AnnotationLiteral;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.meta.MetaClassFactory;
/**
* @author Mike Brock <cbrock@redhat.com>
*/
public class FieldBuilder<T> implements FieldBuildStart<T>, FieldBuildType<T>,
FieldBuildName<T>, FieldBuildInitializer<T> {
private final BuildCallback<T> callback;
private final Scope scope;
private DefModifiers modifiers;
private MetaClass type;
private String name;
private Statement initializer;
private final List<Annotation> annotations = new ArrayList<Annotation>();
public FieldBuilder(BuildCallback<T> callback, Scope scope, MetaClass type, String name) {
this.callback = callback;
this.scope = scope;
this.type = type;
this.name = name;
}
@Override
public Finishable<T> initializesWith(Statement statement) {
this.initializer = statement;
return this;
}
@Override
public FieldBuildInitializer<T> modifiers(Modifier... modifiers) {
this.modifiers = new DefModifiers(modifiers);
return this;
}
@Override
public FieldBuildName<T> typeOf(Class<?> type) {
this.type = MetaClassFactory.get(type);
return this;
}
@Override
public FieldBuildName<T> typeOf(MetaClass type) {
this.type = type;
return this;
}
@Override
public FieldBuildInitializer<T> named(String name) {
this.name = name;
return this;
}
@Override
public FieldBuildInitializer<T> annotatedWith(Annotation... annotation) {
annotations.addAll(Arrays.asList(annotation));
return this;
}
@Override
public T finish() {
if (callback != null) {
return callback.callback(new Statement() {
private String generatedCache;
@Override
public String generate(Context context) {
callback.getParentContext().addVariable(Variable.create(name, type));
if (generatedCache != null) return generatedCache;
final StringBuilder sbuf = new StringBuilder();
annotations.forEach(a -> sbuf.append(new AnnotationLiteral(a).getCanonicalString(context)).append(" "));
sbuf.append(scope.getCanonicalName())
.append(scope == Scope.Package ? "" : " ")
.append(modifiers != null ? modifiers.toJavaString() + " " : "")
.append(LoadClassReference.getClassReference(type, context, type.getTypeParameters() != null))
.append(" ").append(name);
if (initializer != null) {
sbuf.append(" = ").append(initializer.generate(context));
}
return generatedCache = sbuf.append(";").toString();
}
@Override
public MetaClass getType() {
return type;
}
});
}
return null;
}
}