/*
* 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 org.jboss.errai.codegen.Context;
import org.jboss.errai.codegen.Statement;
import org.jboss.errai.codegen.builder.Builder;
import org.jboss.errai.codegen.builder.StatementEnd;
import org.jboss.errai.codegen.builder.callstack.CallElement;
import org.jboss.errai.codegen.builder.callstack.CallWriter;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.util.GenUtil;
import static org.jboss.errai.codegen.util.PrettyPrinter.prettyPrintJava;
/**
* Base class of all {@link StatementBuilder}s
*
* @author Christian Sadilek <csadilek@redhat.com>
*/
public abstract class AbstractStatementBuilder implements Statement, Builder, StatementEnd {
protected final Context context;
protected final CallElementBuilder callElementBuilder;
protected boolean generated;
protected AbstractStatementBuilder(final Context context) {
this(context, new CallElementBuilder());
}
protected AbstractStatementBuilder(Context context, final CallElementBuilder callElementBuilder) {
if (context == null) {
context = Context.create();
}
this.context = context;
this.callElementBuilder = callElementBuilder;
}
String generatorCache;
@Override
public String generate(final Context context) {
if (generatorCache != null) return generatorCache;
final CallWriter writer = new CallWriter();
try {
callElementBuilder.getRootElement().handleCall(writer, context, null);
}
catch (Exception e) {
GenUtil.throwIfUnhandled("generation failure at: " + writer.getCallString(), e);
}
generated = true;
return generatorCache = prettyPrintJava(writer.getCallString());
}
public void appendCallElement(final CallElement element) {
callElementBuilder.appendCallElement(element);
}
@Override
public MetaClass getType() {
if (callElementBuilder.getCallElement() == null)
return null;
return callElementBuilder.getCallElement().getResultType();
}
@Override
public String toJavaString() {
return generate(context);
}
}