/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* 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.asakusafw.compiler.operator;
import java.util.List;
import javax.lang.model.type.TypeKind;
import javax.tools.Diagnostic;
import com.asakusafw.compiler.common.TargetOperator;
import com.asakusafw.compiler.operator.OperatorMethodDescriptor.Builder;
import com.asakusafw.utils.java.model.syntax.InfixOperator;
import com.asakusafw.utils.java.model.syntax.ModelFactory;
import com.asakusafw.utils.java.model.syntax.TypeBodyDeclaration;
import com.asakusafw.utils.java.model.util.ExpressionBuilder;
import com.asakusafw.utils.java.model.util.Models;
/**
* 演算子プロセッサのモック実装。
*/
@TargetOperator(MockOperator.class)
public class MockOperatorProcessor extends AbstractOperatorProcessor {
@Override
public OperatorMethodDescriptor describe(Context context) {
if (context.element.getParameters().size() != 2) {
context.environment.getMessager().printMessage(Diagnostic.Kind.ERROR,
"invalid parameters");
return null;
}
if (context.element.getReturnType().getKind() == TypeKind.VOID) {
context.environment.getMessager().printMessage(Diagnostic.Kind.ERROR,
"invalid return type");
return null;
}
ExecutableAnalyzer a = new ExecutableAnalyzer(context.environment, context.element);
if (a.countParameters() != 2) {
return null;
}
if (a.getReturnType().isVoid()) {
return null;
}
Builder builder = new Builder(MockOperator.class, context);
builder.addInput(
a.getParameterDocument(0),
"in",
a.getParameterType(0).getType(),
0);
builder.addParameter(
a.getParameterDocument(1),
"param",
a.getParameterType(1).getType(),
1);
builder.addOutput(
a.getReturnDocument(),
"out",
a.getReturnType().getType(),
null,
null);
return builder.toDescriptor();
}
@Override
protected List<? extends TypeBodyDeclaration> override(Context context) {
ModelFactory factory = context.environment.getFactory();
ImplementationBuilder builder = new ImplementationBuilder(context);
builder.addStatement(new ExpressionBuilder(factory, builder.getParameterName(0))
.apply(InfixOperator.PLUS, builder.getParameterName(1))
.apply(InfixOperator.PLUS, Models.toLiteral(factory, "!"))
.toReturnStatement());
return builder.toImplementation();
}
}