Clover coverage report - groovy - 1.0-beta-8
Coverage timestamp: Fri Dec 17 2004 14:55:55 GMT
file stats: LOC: 212   Methods: 13
NCLOC: 86   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
Script.java 0% 0% 0% 0%
coverage
 1   
 /*
 2   
  $Id: Script.java,v 1.17 2004/12/14 06:25:17 spullara Exp $
 3   
 
 4   
  Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
 5   
 
 6   
  Redistribution and use of this software and associated documentation
 7   
  ("Software"), with or without modification, are permitted provided
 8   
  that the following conditions are met:
 9   
 
 10   
  1. Redistributions of source code must retain copyright
 11   
     statements and notices.  Redistributions must also contain a
 12   
     copy of this document.
 13   
 
 14   
  2. Redistributions in binary form must reproduce the
 15   
     above copyright notice, this list of conditions and the
 16   
     following disclaimer in the documentation and/or other
 17   
     materials provided with the distribution.
 18   
 
 19   
  3. The name "groovy" must not be used to endorse or promote
 20   
     products derived from this Software without prior written
 21   
     permission of The Codehaus.  For written permission,
 22   
     please contact info@codehaus.org.
 23   
 
 24   
  4. Products derived from this Software may not be called "groovy"
 25   
     nor may "groovy" appear in their names without prior written
 26   
     permission of The Codehaus. "groovy" is a registered
 27   
     trademark of The Codehaus.
 28   
 
 29   
  5. Due credit should be given to The Codehaus -
 30   
     http://groovy.codehaus.org/
 31   
 
 32   
  THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 33   
  ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 34   
  NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 35   
  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 36   
  THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 37   
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 38   
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 39   
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 40   
  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 41   
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 42   
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 43   
  OF THE POSSIBILITY OF SUCH DAMAGE.
 44   
 
 45   
  */
 46   
 package groovy.lang;
 47   
 
 48   
 import org.codehaus.groovy.ast.expr.ArgumentListExpression;
 49   
 import org.codehaus.groovy.control.CompilationFailedException;
 50   
 import org.codehaus.groovy.runtime.InvokerHelper;
 51   
 
 52   
 import java.io.File;
 53   
 import java.io.IOException;
 54   
 
 55   
 /**
 56   
  * This object represents a Groovy script
 57   
  *
 58   
  * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 59   
  * @author Guillaume Laforge
 60   
  * @version $Revision: 1.17 $
 61   
  */
 62   
 public abstract class Script extends GroovyObjectSupport {
 63   
     private Binding binding = new Binding();
 64   
 
 65  0
     protected Script() {
 66   
     }
 67   
 
 68  0
     protected Script(Binding binding) {
 69  0
         this.binding = binding;
 70   
     }
 71   
 
 72  0
     public Binding getBinding() {
 73  0
         return binding;
 74   
     }
 75   
 
 76  0
     public void setBinding(Binding binding) {
 77  0
         this.binding = binding;
 78   
     }
 79   
 
 80  0
     public Object getProperty(String property) {
 81   
         //System.out.println("Script.getProperty for: " + property + " with binding: " + binding.getVariables());
 82  0
         try {
 83  0
             return binding.getVariable(property);
 84   
         } catch (MissingPropertyException e) {
 85  0
             return super.getProperty(property);
 86   
         }
 87   
     }
 88   
 
 89  0
     public void setProperty(String property, Object newValue) {
 90   
         //System.out.println("Script.setProperty for: " + property + " with newValue: " + newValue);
 91  0
         binding.setVariable(property, newValue);
 92   
         //System.out.println("binding are now: " + binding.getVariables());
 93   
     }
 94   
 
 95   
     /**
 96   
      * Invoke a method (or closure in the binding) defined.
 97   
      *
 98   
      * @param name method to call
 99   
      * @param args arguments to pass to the method
 100   
      * @return value
 101   
      */
 102  0
     public Object invokeMethod(String name, Object args) {
 103  0
         try {
 104  0
             return super.invokeMethod(name, args);
 105   
         }
 106   
                 // if the method was not found in the current scope (the script's methods)
 107   
                 // let's try to see if there's a method closure with the same name in the binding
 108   
         catch (MissingMethodException mme) {
 109  0
             Object boundClosure = binding.getVariable(name);
 110  0
             if (boundClosure != null && boundClosure instanceof Closure) {
 111  0
                 return ((Closure) boundClosure).call(args);
 112   
             } else {
 113  0
                 throw mme;
 114   
             }
 115   
         }
 116   
     }
 117   
 
 118   
     /**
 119   
      * The main instance method of a script which has variables in scope
 120   
      * as defined by the current {@link Binding} instance.
 121   
      *
 122   
      * @return
 123   
      */
 124   
     public abstract Object run();
 125   
 
 126   
     // println helper methods
 127   
 
 128   
     /**
 129   
      * Prints a newline to the current 'out' variable which should be a PrintWriter
 130   
      * or at least have a println() method defined on it.
 131   
      * If there is no 'out' property then print to standard out.
 132   
      */
 133  0
     public void println() {
 134  0
         Object object;
 135   
 
 136  0
         try {
 137  0
             object = getProperty("out");
 138   
         } catch (MissingPropertyException e) {
 139  0
             System.out.println();
 140  0
             return;
 141   
         }
 142   
 
 143  0
         InvokerHelper.invokeMethod(object, "println", ArgumentListExpression.EMPTY_ARRAY);
 144   
     }
 145   
 
 146   
     /**
 147   
      * Prints the value to the current 'out' variable which should be a PrintWriter
 148   
      * or at least have a print() method defined on it.
 149   
      * If there is no 'out' property then print to standard out.
 150   
      */
 151  0
     public void print(Object value) {
 152  0
         Object object;
 153   
 
 154  0
         try {
 155  0
             object = getProperty("out");
 156   
         } catch (MissingPropertyException e) {
 157  0
             System.out.print(value);
 158  0
             return;
 159   
         }
 160   
 
 161  0
         InvokerHelper.invokeMethod(object, "print", new Object[]{value});
 162   
     }
 163   
 
 164   
     /**
 165   
      * Prints the value and a newline to the current 'out' variable which should be a PrintWriter
 166   
      * or at least have a println() method defined on it.
 167   
      * If there is no 'out' property then print to standard out.
 168   
      */
 169  0
     public void println(Object value) {
 170  0
         Object object;
 171   
 
 172  0
         try {
 173  0
             object = getProperty("out");
 174   
         } catch (MissingPropertyException e) {
 175  0
             System.out.println(value);
 176  0
             return;
 177   
         }
 178   
 
 179  0
         InvokerHelper.invokeMethod(object, "println", new Object[]{value});
 180   
     }
 181   
 
 182   
     /**
 183   
      * A helper method to allow the dynamic evaluation of groovy expressions using this
 184   
      * scripts binding as the variable scope
 185   
      *
 186   
      * @param expression is the Groovy script expression to evaluate
 187   
      */
 188  0
     public Object evaluate(String expression) throws CompilationFailedException, IOException {
 189  0
         GroovyShell shell = new GroovyShell(binding);
 190  0
         return shell.evaluate(expression);
 191   
     }
 192   
 
 193   
     /**
 194   
      * A helper method to allow the dynamic evaluation of groovy expressions using this
 195   
      * scripts binding as the variable scope
 196   
      *
 197   
      * @param file is the Groovy script to evaluate
 198   
      */
 199  0
     public Object evaluate(File file) throws CompilationFailedException, IOException {
 200  0
         GroovyShell shell = new GroovyShell(binding);
 201  0
         return shell.evaluate(file);
 202   
     }
 203   
 
 204   
     /**
 205   
      * A helper method to allow scripts to be run taking command line arguments
 206   
      */
 207  0
     public void run(File file, String[] arguments) throws CompilationFailedException, IOException {
 208  0
         GroovyShell shell = new GroovyShell(binding);
 209  0
         shell.run(file, arguments);
 210   
     }
 211   
 }
 212