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Groovy: A powerful, dynamic language for the JVM
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.codehaus.groovy.transform.sc.transformers;
import org.codehaus.groovy.ast.ConstructorNode;
import org.codehaus.groovy.ast.MethodNode;
import org.codehaus.groovy.ast.expr.ArgumentListExpression;
import org.codehaus.groovy.ast.expr.ArrayExpression;
import org.codehaus.groovy.ast.expr.ConstructorCallExpression;
import org.codehaus.groovy.ast.expr.Expression;
import org.codehaus.groovy.ast.expr.ListExpression;
import org.codehaus.groovy.transform.stc.StaticTypesMarker;
import java.util.LinkedList;
import java.util.List;
import static org.codehaus.groovy.transform.stc.StaticTypesMarker.DIRECT_METHOD_CALL_TARGET;
public class ListExpressionTransformer {
private final StaticCompilationTransformer transformer;
public ListExpressionTransformer(StaticCompilationTransformer staticCompilationTransformer) {
transformer = staticCompilationTransformer;
}
Expression transformListExpression(final ListExpression expr) {
MethodNode target = expr.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET);
if (target!=null && target instanceof ConstructorNode) {
if (target.getDeclaringClass().isArray()) {
return transformArrayConstructor(expr, target);
}
return transformRegularConstructor(expr, target);
} else {
return transformer.superTransform(expr);
}
}
private Expression transformArrayConstructor(final ListExpression expr, final MethodNode target) {
ArrayExpression aex = new ArrayExpression(target.getDeclaringClass().getComponentType(), transformArguments(expr));
aex.setSourcePosition(expr);
return aex;
}
private Expression transformRegularConstructor(final ListExpression expr, final MethodNode target) {
// can be replaced with a direct constructor call
List transformedArgs = transformArguments(expr);
ConstructorCallExpression cce = new ConstructorCallExpression(
target.getDeclaringClass(),
new ArgumentListExpression(transformedArgs)
);
cce.setSourcePosition(expr);
cce.putNodeMetaData(DIRECT_METHOD_CALL_TARGET, target);
return cce;
}
private List transformArguments(final ListExpression expr) {
List expressions = expr.getExpressions();
List transformedArgs = new LinkedList();
for (Expression expression : expressions) {
transformedArgs.add(transformer.transform(expression));
}
return transformedArgs;
}
}