/*
* Copyright 2009 the original author or authors.
*
* 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.gradle.api.internal.artifacts.dsl;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.GroovyCodeVisitor;
import org.codehaus.groovy.ast.MethodNode;
import org.codehaus.groovy.control.CompilationUnit;
import org.codehaus.groovy.ast.expr.*;
import org.codehaus.groovy.control.SourceUnit;
import org.gradle.groovy.scripts.Transformer;
public abstract class AbstractScriptTransformer extends CompilationUnit.SourceUnitOperation implements Transformer {
public void register(CompilationUnit compilationUnit) {
compilationUnit.addPhaseOperation(this, getPhase());
}
protected abstract int getPhase();
protected boolean isMethodOnThis(MethodCallExpression call, String name) {
boolean isTaskMethod = call.getMethod() instanceof ConstantExpression && call.getMethod().getText().equals(
name);
return isTaskMethod && targetIsThis(call);
}
protected boolean targetIsThis(MethodCallExpression call) {
Expression target = call.getObjectExpression();
return target instanceof VariableExpression && target.getText().equals("this");
}
protected void visitScriptCode(SourceUnit source, GroovyCodeVisitor transformer) {
source.getAST().getStatementBlock().visit(transformer);
for (Object method : source.getAST().getMethods()) {
MethodNode methodNode = (MethodNode) method;
methodNode.getCode().visit(transformer);
}
}
protected ClassNode getScriptClass(SourceUnit source) {
if (source.getAST().getStatementBlock().getStatements().isEmpty() && source.getAST().getMethods().isEmpty()) {
// There is no script class when there are no statements or methods declared in the script
return null;
}
return source.getAST().getClasses().get(0);
}
protected void removeMethod(ClassNode declaringClass, MethodNode methodNode) {
declaringClass.getMethods().remove(methodNode);
declaringClass.getDeclaredMethods(methodNode.getName()).clear();
}
}