| /* |
| * Copyright 2003-2009 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.codehaus.groovy.ast |
| |
| import org.codehaus.groovy.classgen.GeneratorContext |
| import org.codehaus.groovy.control.SourceUnit |
| import org.codehaus.groovy.control.CompilePhase |
| import org.codehaus.groovy.control.customizers.CompilationCustomizer |
| import org.codehaus.groovy.control.CompilerConfiguration |
| import org.codehaus.groovy.ast.expr.VariableExpression |
| |
| /** |
| * Adds several utility methods which are used in tests on generics. |
| * |
| * @author Cedric Champeau |
| */ |
| abstract class GenericsTestCase extends GroovyTestCase { |
| |
| def extractTypesFromCode(String string) { |
| def result = [generics:[], type:null] |
| CompilerConfiguration config = new CompilerConfiguration() |
| config.addCompilationCustomizers(new CompilationCustomizer(CompilePhase.CANONICALIZATION) { |
| @Override |
| void call(SourceUnit source, GeneratorContext context, ClassNode classNode) { |
| def visitor = new GenericsVisitorSupport(source) |
| visitor.visitClass(classNode) |
| result = visitor.result |
| } |
| |
| }) |
| |
| new GroovyShell(config).evaluate(string) |
| |
| result |
| } |
| |
| private static class GenericsVisitorSupport extends ClassCodeVisitorSupport { |
| |
| private final SourceUnit sourceUnit |
| private final Map result = [:] |
| |
| private GenericsVisitorSupport(SourceUnit unit) { |
| sourceUnit = unit |
| } |
| |
| @Override |
| protected SourceUnit getSourceUnit() { |
| return sourceUnit |
| } |
| |
| @Override |
| void visitVariableExpression(VariableExpression expression) { |
| super.visitVariableExpression(expression) |
| if (expression.name=='type') { |
| result.generics = expression.type.genericsTypes |
| result.type = expression.type |
| } |
| } |
| |
| @Override |
| void visitMethod(MethodNode node) { |
| super.visitMethod(node) |
| if (node.name=='type') { |
| result.generics = node.genericsTypes |
| result.type = node.returnType |
| } |
| } |
| |
| } |
| } |