| /* |
| * 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.apache.groovy.parser; |
| |
| import groovy.lang.GroovyClassLoader; |
| import org.codehaus.groovy.ast.ModuleNode; |
| import org.codehaus.groovy.control.CompilerConfiguration; |
| import org.codehaus.groovy.control.ErrorCollector; |
| import org.codehaus.groovy.control.SourceUnit; |
| |
| import java.io.File; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * The base parser for creating a module node. |
| * The concrete compiler configuration can be specified by the sub-classes of the base parser(e.g. Antlr4Parser) |
| */ |
| public abstract class AbstractParser { |
| private static final Logger LOGGER = Logger.getLogger(AbstractParser.class.getName()); |
| |
| public ModuleNode parse(File file) { |
| if (null == file || !file.exists()) { |
| throw new IllegalArgumentException(file + " does not exist."); |
| } |
| |
| CompilerConfiguration configuration = this.getCompilerConfiguration(); |
| SourceUnit sourceUnit = |
| new SourceUnit( |
| file, |
| configuration, |
| AccessController.doPrivileged( |
| new PrivilegedAction<GroovyClassLoader>() { |
| @Override |
| public GroovyClassLoader run() { |
| return new GroovyClassLoader(); |
| } |
| }), |
| new ErrorCollector(configuration) |
| ); |
| |
| return this.parse(sourceUnit); |
| } |
| |
| public ModuleNode parse(String name, String text) { |
| if (null == name) { |
| throw new IllegalArgumentException("name should not be null"); |
| } |
| |
| if (null == text) { |
| throw new IllegalArgumentException("text should not be null"); |
| } |
| |
| CompilerConfiguration configuration = this.getCompilerConfiguration(); |
| SourceUnit sourceUnit = |
| new SourceUnit( |
| name, |
| text, |
| configuration, |
| AccessController.doPrivileged( |
| new PrivilegedAction<GroovyClassLoader>() { |
| @Override |
| public GroovyClassLoader run() { |
| return new GroovyClassLoader(); |
| } |
| }), |
| new ErrorCollector(configuration) |
| ); |
| |
| return this.parse(sourceUnit); |
| } |
| |
| public ModuleNode parse(SourceUnit sourceUnit) { |
| try { |
| sourceUnit.parse(); |
| sourceUnit.completePhase(); |
| sourceUnit.nextPhase(); |
| sourceUnit.convert(); |
| |
| return sourceUnit.getAST(); |
| } catch (Exception e) { |
| LOGGER.log(Level.SEVERE, "Failed to parse " + sourceUnit.getName(), e); |
| |
| return null; |
| } |
| } |
| |
| protected abstract CompilerConfiguration getCompilerConfiguration(); |
| } |