| /* |
| * 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 |
| * |
| * https://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.tools.ant.taskdefs.compilers; |
| |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.Task; |
| import org.apache.tools.ant.types.Path; |
| import org.apache.tools.ant.util.ClasspathUtils; |
| import org.apache.tools.ant.util.JavaEnvUtils; |
| |
| /** |
| * Creates the necessary compiler adapter, given basic criteria. |
| * |
| * @since Ant 1.3 |
| */ |
| public final class CompilerAdapterFactory { |
| private static final String MODERN_COMPILER = "com.sun.tools.javac.Main"; |
| |
| /** This is a singleton -- can't create instances!! */ |
| private CompilerAdapterFactory() { |
| } |
| |
| /** |
| * Based on the parameter passed in, this method creates the necessary |
| * factory desired. |
| * |
| * The current mapping for compiler names are as follows: |
| * <ul><li>jikes = jikes compiler |
| * <li>classic, javac1.1, javac1.2 = the standard compiler from JDK |
| * 1.1/1.2 |
| * <li>modern, javac1.3, javac1.4, javac1.5 = the compiler of JDK 1.3+ |
| * <li>jvc, microsoft = the command line compiler from Microsoft's SDK |
| * for Java / Visual J++ |
| * <li>kjc = the kopi compiler</li> |
| * <li>gcj = the gcj compiler from gcc</li> |
| * <li>sj, symantec = the Symantec Java compiler</li> |
| * <li><i>a fully qualified classname</i> = the name of a compiler |
| * adapter |
| * </ul> |
| * |
| * @param compilerType either the name of the desired compiler, or the |
| * full classname of the compiler's adapter. |
| * @param task a task to log through. |
| * @return the compiler adapter |
| * @throws BuildException if the compiler type could not be resolved into |
| * a compiler adapter. |
| */ |
| public static CompilerAdapter getCompiler(String compilerType, Task task) |
| throws BuildException { |
| return getCompiler(compilerType, task, null); |
| } |
| |
| /** |
| * Based on the parameter passed in, this method creates the necessary |
| * factory desired. |
| * |
| * The current mapping for compiler names are as follows: |
| * <ul><li>jikes = jikes compiler |
| * <li>classic, javac1.1, javac1.2 = the standard compiler from JDK |
| * 1.1/1.2 |
| * <li>modern, javac1.3, javac1.4, javac1.5 = the compiler of JDK 1.3+ |
| * <li>jvc, microsoft = the command line compiler from Microsoft's SDK |
| * for Java / Visual J++ |
| * <li>kjc = the kopi compiler</li> |
| * <li>gcj = the gcj compiler from gcc</li> |
| * <li>sj, symantec = the Symantec Java compiler</li> |
| * <li><i>a fully qualified classname</i> = the name of a compiler |
| * adapter |
| * </ul> |
| * |
| * @param compilerType either the name of the desired compiler, or the |
| * full classname of the compiler's adapter. |
| * @param task a task to log through. |
| * @param classpath the classpath to use when looking up an |
| * adapter class |
| * @return the compiler adapter |
| * @throws BuildException if the compiler type could not be resolved into |
| * a compiler adapter. |
| * @since Ant 1.8.0 |
| */ |
| public static CompilerAdapter getCompiler(String compilerType, Task task, |
| Path classpath) throws BuildException { |
| if ("jikes".equalsIgnoreCase(compilerType)) { |
| return new Jikes(); |
| } |
| if ("extjavac".equalsIgnoreCase(compilerType)) { |
| return new JavacExternal(); |
| } |
| if ("classic".equalsIgnoreCase(compilerType) |
| || "javac1.1".equalsIgnoreCase(compilerType) |
| || "javac1.2".equalsIgnoreCase(compilerType)) { |
| task.log( |
| "This version of java does not support the classic compiler; upgrading to modern", |
| Project.MSG_WARN); |
| compilerType = "modern"; |
| } |
| //on java<=1.3 the modern falls back to classic if it is not found |
| //but on java>=1.4 we just bail out early |
| if ("modern".equalsIgnoreCase(compilerType) |
| || "javac1.3".equalsIgnoreCase(compilerType) |
| || "javac1.4".equalsIgnoreCase(compilerType) |
| || "javac1.5".equalsIgnoreCase(compilerType) |
| || "javac1.6".equalsIgnoreCase(compilerType) |
| || "javac1.7".equalsIgnoreCase(compilerType) |
| || "javac1.8".equalsIgnoreCase(compilerType) |
| || "javac1.9".equalsIgnoreCase(compilerType) |
| || "javac9".equalsIgnoreCase(compilerType) |
| || "javac10+".equalsIgnoreCase(compilerType)) { |
| // does the modern compiler exist? |
| if (doesModernCompilerExist()) { |
| return new Javac13(); |
| } |
| throw new BuildException( |
| "Unable to find a javac compiler;\n%s is not on the classpath.\nPerhaps JAVA_HOME does not point to the JDK.\nIt is currently set to \"%s\"", |
| MODERN_COMPILER, JavaEnvUtils.getJavaHome()); |
| } |
| |
| if ("jvc".equalsIgnoreCase(compilerType) |
| || "microsoft".equalsIgnoreCase(compilerType)) { |
| return new Jvc(); |
| } |
| if ("kjc".equalsIgnoreCase(compilerType)) { |
| return new Kjc(); |
| } |
| if ("gcj".equalsIgnoreCase(compilerType)) { |
| return new Gcj(); |
| } |
| if ("sj".equalsIgnoreCase(compilerType) |
| || "symantec".equalsIgnoreCase(compilerType)) { |
| return new Sj(); |
| } |
| return resolveClassName(compilerType, |
| // Memory-Leak in line below |
| task.getProject().createClassLoader(classpath)); |
| } |
| |
| /** |
| * query for the Modern compiler existing |
| * @return true if classic os on the classpath |
| */ |
| private static boolean doesModernCompilerExist() { |
| try { |
| Class.forName(MODERN_COMPILER); |
| return true; |
| } catch (ClassNotFoundException cnfe) { |
| try { |
| ClassLoader cl = CompilerAdapterFactory.class.getClassLoader(); |
| if (cl != null) { |
| cl.loadClass(MODERN_COMPILER); |
| return true; |
| } |
| } catch (ClassNotFoundException cnfe2) { |
| // Ignore Exception |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Tries to resolve the given classname into a compiler adapter. |
| * Throws a fit if it can't. |
| * |
| * @param className The fully qualified classname to be created. |
| * @param loader the classloader to use |
| * @throws BuildException This is the fit that is thrown if className |
| * isn't an instance of CompilerAdapter. |
| */ |
| private static CompilerAdapter resolveClassName(String className, |
| ClassLoader loader) |
| throws BuildException { |
| return ClasspathUtils.newInstance(className, |
| loader != null ? loader : |
| CompilerAdapterFactory.class.getClassLoader(), |
| CompilerAdapter.class); |
| } |
| |
| } |
