001 /* 002 $Id: BinaryExpression.java,v 1.10 2005/11/13 16:42:09 blackdrag Exp $ 003 004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. 005 006 Redistribution and use of this software and associated documentation 007 ("Software"), with or without modification, are permitted provided 008 that the following conditions are met: 009 010 1. Redistributions of source code must retain copyright 011 statements and notices. Redistributions must also contain a 012 copy of this document. 013 014 2. Redistributions in binary form must reproduce the 015 above copyright notice, this list of conditions and the 016 following disclaimer in the documentation and/or other 017 materials provided with the distribution. 018 019 3. The name "groovy" must not be used to endorse or promote 020 products derived from this Software without prior written 021 permission of The Codehaus. For written permission, 022 please contact info@codehaus.org. 023 024 4. Products derived from this Software may not be called "groovy" 025 nor may "groovy" appear in their names without prior written 026 permission of The Codehaus. "groovy" is a registered 027 trademark of The Codehaus. 028 029 5. Due credit should be given to The Codehaus - 030 http://groovy.codehaus.org/ 031 032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS 033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 043 OF THE POSSIBILITY OF SUCH DAMAGE. 044 045 */ 046 package org.codehaus.groovy.ast.expr; 047 048 import java.math.BigDecimal; 049 import java.math.BigInteger; 050 051 import org.codehaus.groovy.ast.ClassNode; 052 import org.codehaus.groovy.ast.GroovyCodeVisitor; 053 import org.codehaus.groovy.syntax.Token; 054 import org.codehaus.groovy.syntax.Types; 055 056 /** 057 * Represents two expressions and an operation 058 * 059 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> 060 * @version $Revision: 1.10 $ 061 */ 062 public class BinaryExpression extends Expression { 063 064 private Expression leftExpression; 065 private Expression rightExpression; 066 private Token operation; 067 068 public BinaryExpression(Expression leftExpression, 069 Token operation, 070 Expression rightExpression) { 071 this.leftExpression = leftExpression; 072 this.operation = operation; 073 this.rightExpression = rightExpression; 074 075 } 076 077 private static boolean isFloatingPoint(Class cls) { 078 return cls == Double.class || cls == Float.class; 079 } 080 081 private static boolean isInteger(Class cls) { 082 return cls == Integer.class || cls == Byte.class || cls == Short.class || cls == Character.class; 083 } 084 085 private static boolean isLong(Class cls) { 086 return cls == Long.class; 087 } 088 089 private static boolean isBigDecimal(Class cls) { 090 return cls == BigDecimal.class; 091 } 092 093 private static boolean isBigInteger(Class cls) { 094 return cls == BigInteger.class; 095 } 096 097 public String toString() { 098 return super.toString() +"[" + leftExpression + operation + rightExpression + "]"; 099 } 100 101 public void visit(GroovyCodeVisitor visitor) { 102 visitor.visitBinaryExpression(this); 103 } 104 105 public Expression transformExpression(ExpressionTransformer transformer) { 106 return new BinaryExpression(transformer.transform(leftExpression), operation, transformer.transform(rightExpression)); 107 } 108 109 public Expression getLeftExpression() { 110 return leftExpression; 111 } 112 113 public void setLeftExpression(Expression leftExpression) { 114 this.leftExpression = leftExpression; 115 } 116 117 public void setRightExpression(Expression rightExpression) { 118 this.rightExpression = rightExpression; 119 } 120 121 public Token getOperation() { 122 return operation; 123 } 124 125 public Expression getRightExpression() { 126 return rightExpression; 127 } 128 129 public String getText() { 130 if (operation.getType() == Types.LEFT_SQUARE_BRACKET) { 131 return leftExpression.getText() + "[" + rightExpression.getText() + "]"; 132 } 133 return "(" + leftExpression.getText() + " " + operation.getText() + " " + rightExpression.getText() + ")"; 134 } 135 136 137 /** 138 * Creates an assignment expression in which the specified expression 139 * is written into the specified variable name. 140 */ 141 142 public static BinaryExpression newAssignmentExpression( String variable, Expression rhs ) { 143 VariableExpression lhs = new VariableExpression( variable ); 144 Token operator = Token.newPlaceholder( Types.ASSIGN ); 145 146 return new BinaryExpression( lhs, operator, rhs ); 147 } 148 149 150 /** 151 * Creates variable initialization expression in which the specified expression 152 * is written into the specified variable name. 153 */ 154 155 public static BinaryExpression newInitializationExpression( String variable, ClassNode type, Expression rhs ) { 156 VariableExpression lhs = new VariableExpression( variable ); 157 158 if( type != null ) { 159 lhs.setType(type); 160 } 161 162 Token operator = Token.newPlaceholder( Types.ASSIGN ); 163 164 return new BinaryExpression( lhs, operator, rhs ); 165 } 166 167 }