| package org.apache.tinkerpop.gremlin.groovy.jsr223.ast |
| |
| import groovy.transform.CompilationUnitAware |
| import org.codehaus.groovy.ast.ASTNode |
| import org.codehaus.groovy.ast.ClassNode |
| import org.codehaus.groovy.classgen.GeneratorContext |
| import org.codehaus.groovy.control.SourceUnit |
| import org.codehaus.groovy.control.customizers.ASTTransformationCustomizer |
| import org.codehaus.groovy.transform.ASTTransformation |
| |
| /* |
| * 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. |
| */ |
| |
| /** |
| * Overrides the single application of the specified global AST Transformation (which is how the base |
| * {@code ASTTransformationCustomizer} works. That approach is not so helpful in the ScriptEngine where we want |
| * each script to be treated as an independent source unit. This is a bit of a hack but the use case here is fairly |
| * narrow (i.e. {@code VarAsBindingASTTransformation}) |
| */ |
| class RepeatASTTransformationCustomizer extends ASTTransformationCustomizer { |
| RepeatASTTransformationCustomizer(final ASTTransformation transformation) { |
| super(transformation) |
| } |
| |
| @Override |
| @SuppressWarnings('Instanceof') |
| void call(SourceUnit source, GeneratorContext context, ClassNode classNode) { |
| if (transformation instanceof CompilationUnitAware) { |
| transformation.compilationUnit = compilationUnit |
| } |
| |
| // this is a global AST transformation |
| transformation.visit(null, source) |
| } |
| } |