| /* |
| * 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.control; |
| |
| import groovy.lang.GroovyClassLoader; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| /** |
| * A base class for data structures that can collect messages and errors |
| * during processing. |
| */ |
| public abstract class ProcessingUnit { |
| |
| /** |
| * The current phase |
| */ |
| protected int phase = Phases.INITIALIZATION; |
| |
| /** |
| * True if phase is finished |
| */ |
| protected boolean phaseComplete; |
| |
| /** |
| * Configuration and other settings that control processing |
| */ |
| protected CompilerConfiguration configuration; |
| |
| /** |
| * The ClassLoader to use during processing |
| */ |
| protected GroovyClassLoader classLoader; |
| |
| /** |
| * a helper to share errors and report them |
| */ |
| protected ErrorCollector errorCollector; |
| |
| /** |
| * Initializes the ProcessingUnit to the empty state. |
| */ |
| public ProcessingUnit(final CompilerConfiguration configuration, final GroovyClassLoader classLoader, final ErrorCollector errorCollector) { |
| setConfiguration(configuration != null ? configuration : CompilerConfiguration.DEFAULT); setClassLoader(classLoader); |
| this.errorCollector = errorCollector != null ? errorCollector : new ErrorCollector(getConfiguration()); |
| configure(getConfiguration()); |
| } |
| |
| /** |
| * Reconfigures the ProcessingUnit. |
| */ |
| public void configure(CompilerConfiguration configuration) { |
| setConfiguration(configuration); |
| } |
| |
| /** |
| * Get the CompilerConfiguration for this ProcessingUnit. |
| */ |
| public CompilerConfiguration getConfiguration() { |
| return configuration; |
| } |
| |
| /** |
| * Sets the CompilerConfiguration for this ProcessingUnit. |
| */ |
| public final void setConfiguration(CompilerConfiguration configuration) { |
| this.configuration = requireNonNull(configuration); |
| } |
| |
| /** |
| * Returns the class loader in use by this ProcessingUnit. |
| */ |
| public GroovyClassLoader getClassLoader() { |
| return classLoader; |
| } |
| |
| /** |
| * Sets the class loader for use by this ProcessingUnit. |
| */ |
| public void setClassLoader(final GroovyClassLoader loader) { |
| // ClassLoaders should only be created inside a doPrivileged block in case |
| // this method is invoked by code that does not have security permissions. |
| this.classLoader = loader != null ? loader : AccessController.doPrivileged((PrivilegedAction<GroovyClassLoader>) () -> { |
| ClassLoader parent = Thread.currentThread().getContextClassLoader(); |
| if (parent == null) parent = ProcessingUnit.class.getClassLoader(); |
| return new GroovyClassLoader(parent, getConfiguration()); |
| }); |
| } |
| |
| /** |
| * Errors found during the compilation should be reported through the ErrorCollector. |
| */ |
| public ErrorCollector getErrorCollector() { |
| return errorCollector; |
| } |
| |
| /** |
| * Returns the current phase. |
| */ |
| public int getPhase() { |
| return phase; |
| } |
| |
| /** |
| * Returns the description for the current phase. |
| */ |
| public String getPhaseDescription() { |
| return Phases.getDescription(phase); |
| } |
| |
| public boolean isPhaseComplete() { |
| return phaseComplete; |
| } |
| |
| /** |
| * Marks the current phase complete and processes any errors. |
| */ |
| public void completePhase() throws CompilationFailedException { |
| errorCollector.failIfErrors(); |
| phaseComplete = true; |
| } |
| |
| /** |
| * A synonym for <code>gotoPhase(getPhase() + 1)</code>. |
| */ |
| public void nextPhase() throws CompilationFailedException { |
| gotoPhase(phase + 1); |
| } |
| |
| /** |
| * Wraps up any pending operations for the current phase and switches to the given phase. |
| */ |
| public void gotoPhase(int phase) throws CompilationFailedException { |
| if (!phaseComplete) { |
| completePhase(); |
| } |
| this.phase = phase; |
| phaseComplete = false; |
| } |
| } |