diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java deleted file mode 100644 index a24537ac..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/optional/JavaxScriptRunner.java +++ /dev/null @@ -1,163 +0,0 @@ -/* - * 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.tools.ant.util.optional; - -import java.util.Iterator; - -import org.apache.tools.ant.BuildException; -import org.apache.tools.ant.util.ReflectWrapper; -import org.apache.tools.ant.util.ScriptRunnerBase; - -/** - * This class is used to run scripts using JSR 223. - * @since Ant 1.7.0 - */ -public class JavaxScriptRunner extends ScriptRunnerBase { - private ReflectWrapper engine; - - /** - * Get the name of the manager prefix. - * @return "javax" - */ - public String getManagerName() { - return "javax"; - } - - /** {@inheritDoc}. */ - public boolean supportsLanguage() { - if (engine != null) { - return true; - } - checkLanguage(); - ClassLoader origLoader = replaceContextLoader(); - try { - return createEngine() != null; - } catch (Exception ex) { - return false; - } finally { - restoreContextLoader(origLoader); - } - } - - /** - * Do the work to run the script. - * - * @param execName the name that will be passed to the - * scripting engine for this script execution. - * - * @exception BuildException if something goes wrong executing the script. - */ - public void executeScript(String execName) throws BuildException { - evaluateScript(execName); - } - - /** - * Do the work to eval the script. - * - * @param execName the name that will be passed to the - * scripting engine for this script execution. - * @return the result of the evaluation - * @exception BuildException if something goes wrong executing the script. - */ - public Object evaluateScript(String execName) throws BuildException { - checkLanguage(); - ClassLoader origLoader = replaceContextLoader(); - try { - ReflectWrapper engine = createEngine(); - if (engine == null) { - throw new BuildException( - "Unable to create javax script engine for " - + getLanguage()); - } - for (Iterator i = getBeans().keySet().iterator(); i.hasNext();) { - String key = (String) i.next(); - Object value = getBeans().get(key); - if ("FX".equalsIgnoreCase(getLanguage())) { - engine.invoke( - "put", String.class, key - + ":" + value.getClass().getName(), - Object.class, value); - } else { - engine.invoke( - "put", String.class, key, - Object.class, value); - } - } - // execute the script - return engine.invoke("eval", String.class, getScript()); - } catch (BuildException be) { - //catch and rethrow build exceptions - - // this may be a BuildException wrapping a ScriptException - // deeply wrapping yet another BuildException - for - // example because of self.fail() - see - // https://issues.apache.org/bugzilla/show_bug.cgi?id=47509 - throw unwrap(be); - } catch (Exception be) { - //any other exception? Get its cause - Throwable t = be; - Throwable te = be.getCause(); - if (te != null) { - if (te instanceof BuildException) { - throw (BuildException) te; - } else { - t = te; - } - } - throw new BuildException(t); - } finally { - restoreContextLoader(origLoader); - } - } - - private ReflectWrapper createEngine() throws Exception { - if (engine != null) { - return engine; - } - ReflectWrapper manager = new ReflectWrapper( - getClass().getClassLoader(), "javax.script.ScriptEngineManager"); - Object e = manager.invoke( - "getEngineByName", String.class, getLanguage()); - if (e == null) { - return null; - } - ReflectWrapper ret = new ReflectWrapper(e); - if (getKeepEngine()) { - this.engine = ret; - } - return ret; - } - - /** - * Traverse a Throwable's cause(s) and return the BuildException - * most deeply nested into it - if any. - */ - private static BuildException unwrap(Throwable t) { - BuildException deepest = - t instanceof BuildException ? (BuildException) t : null; - Throwable current = t; - while (current.getCause() != null) { - current = current.getCause(); - if (current instanceof BuildException) { - deepest = (BuildException) current; - } - } - return deepest; - } -} |