Clover coverage report - groovy - 1.0-beta-6
Coverage timestamp: Thu Jul 15 2004 13:18:22 BST
file stats: LOC: 186   Methods: 14
NCLOC: 92   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
VariableScopeCodeVisitor.java 0% 0% 0% 0%
coverage
 1   
 /*
 2   
  $Id: VariableScopeCodeVisitor.java,v 1.10 2004/04/01 06:21:53 cpoirier 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 org.codehaus.groovy.classgen;
 47   
 
 48   
 import java.util.Set;
 49   
 
 50   
 import org.codehaus.groovy.ast.CodeVisitorSupport;
 51   
 import org.codehaus.groovy.ast.Parameter;
 52   
 import org.codehaus.groovy.ast.VariableScope;
 53   
 import org.codehaus.groovy.ast.expr.BinaryExpression;
 54   
 import org.codehaus.groovy.ast.expr.ClosureExpression;
 55   
 import org.codehaus.groovy.ast.expr.Expression;
 56   
 import org.codehaus.groovy.ast.expr.MethodCallExpression;
 57   
 import org.codehaus.groovy.ast.expr.PostfixExpression;
 58   
 import org.codehaus.groovy.ast.expr.PrefixExpression;
 59   
 import org.codehaus.groovy.ast.expr.VariableExpression;
 60   
 import org.codehaus.groovy.ast.stmt.ForStatement;
 61   
 
 62   
 import org.codehaus.groovy.syntax.Types;
 63   
 
 64   
 /**
 65   
  * A visitor which figures out which variables are in scope
 66   
  * 
 67   
  * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 68   
  * @version $Revision: 1.10 $
 69   
  */
 70   
 public class VariableScopeCodeVisitor extends CodeVisitorSupport {
 71   
 
 72   
     private VariableScope scope;
 73   
 
 74  0
     public VariableScopeCodeVisitor(VariableScope scope) {
 75  0
         this.scope = scope;
 76   
     }
 77   
 
 78  0
     public Set getReferencedVariables() {
 79  0
         return scope.getReferencedVariables();
 80   
     }
 81   
 
 82  0
     public Set getDeclaredVariables() {
 83  0
         return scope.getDeclaredVariables();
 84   
     }
 85   
 
 86   
     
 87   
 
 88  0
     public void visitBinaryExpression(BinaryExpression expression) {
 89  0
         Expression leftExpression = expression.getLeftExpression();
 90  0
         if (expression.getOperation().isA(Types.ASSIGNMENT_OPERATOR) && leftExpression instanceof VariableExpression) {
 91  0
             declareVariable((VariableExpression) leftExpression);
 92   
         }
 93   
         else {
 94  0
             leftExpression.visit(this);
 95   
         }
 96  0
         expression.getRightExpression().visit(this);
 97   
     }
 98   
 
 99  0
     public void visitForLoop(ForStatement forLoop) {
 100  0
         declareVariable(forLoop.getVariable());
 101   
 
 102  0
         super.visitForLoop(forLoop);
 103   
     }
 104   
 
 105  0
     public void visitClosureExpression(ClosureExpression expression) {
 106  0
         VariableScopeCodeVisitor visitor = createClosureVisitor(expression);
 107  0
         expression.getCode().visit(visitor);
 108   
     }
 109   
     
 110  0
     public void visitVariableExpression(VariableExpression expression) {
 111   
         // check for undeclared variables?
 112  0
         String variable = expression.getVariable();
 113   
         /*
 114   
         if (!parameterSet.contains(variable)) {
 115   
             referencedVariables.add(variable);
 116   
         }
 117   
         */
 118  0
         getReferencedVariables().add(variable);
 119   
     }
 120   
 
 121   
 
 122  0
     public void visitPostfixExpression(PostfixExpression expression) {
 123  0
         Expression exp = expression.getExpression();
 124  0
         if (exp instanceof VariableExpression) {
 125  0
             declareVariable((VariableExpression) exp);
 126   
         }
 127   
         else {
 128  0
             exp.visit(this);
 129   
         }
 130   
     }
 131   
 
 132  0
     public void visitPrefixExpression(PrefixExpression expression) {
 133  0
         Expression exp = expression.getExpression();
 134  0
         if (exp instanceof VariableExpression) {
 135  0
             declareVariable((VariableExpression) exp);
 136   
         }
 137   
         else {
 138  0
             exp.visit(this);
 139   
         }
 140   
     }
 141   
 
 142  0
     public void visitMethodCallExpression(MethodCallExpression call) {
 143  0
         if (call.isImplicitThis()) {
 144  0
             getReferencedVariables().add(call.getMethod());
 145   
         }
 146  0
         super.visitMethodCallExpression(call);
 147   
     }
 148   
 
 149  0
     protected void setParameters(Parameter[] parameters) {
 150   
         /*
 151   
         parameterSet.clear();
 152   
         for (int i = 0; i < parameters.length; i++) {
 153   
             parameterSet.add(parameters[i].getName());
 154   
         }
 155   
         */
 156   
         
 157  0
         for (int i = 0; i < parameters.length; i++) {
 158  0
             declareVariable(parameters[i].getName());
 159   
         }
 160   
     }
 161   
 
 162  0
     protected void declareVariable(VariableExpression varExp) {
 163  0
         String variable = varExp.getVariable();
 164  0
         declareVariable(variable);
 165   
     }
 166   
 
 167  0
     protected void declareVariable(String variable) {
 168   
         /*
 169   
         if (!parameterSet.contains(variable)) {
 170   
             declaredVariables.add(variable);
 171   
             getReferencedVariables().add(variable);
 172   
         }
 173   
         */
 174  0
         getDeclaredVariables().add(variable);
 175  0
         getReferencedVariables().add(variable);
 176   
     }
 177   
 
 178  0
     protected VariableScopeCodeVisitor createClosureVisitor(ClosureExpression expression) {
 179  0
         VariableScope closureScope = new VariableScope(scope);
 180  0
         expression.setVariableScope(closureScope);
 181  0
         VariableScopeCodeVisitor answer = new VariableScopeCodeVisitor(closureScope);
 182  0
         answer.setParameters(expression.getParameters());
 183  0
         return answer;
 184   
     }
 185   
 }
 186