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  * Copyright 2008 Sun Microsystems, Inc. All rights reserved.

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  * particular file as subject to the "Classpath" exception as provided

  * by Sun in the GPL Version 2 section of the License file that

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  * License Header, with the fields enclosed by brackets [] replaced by

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 package org.netbeans.modules.ada.editor.ast.nodes;

 import org.netbeans.modules.ada.editor.ast.nodes.visitors.Visitor;

 /**

  * Based on org.netbeans.modules.php.editor.parser.astnodes.InfixExpression

  * 

  * Represents an infix expression

  * <pre>e.g.<pre> $a + 1,

  * 3 - 2,

  * foo() * $a->bar(),

  * 'string'.$c

  */

 public class InfixExpression extends Expression {

     public enum OperatorType {

         IS_EQUAL, // '='

     	IS_NOT_EQUAL, // '/='

         RGREATER, // '<'

         IS_SMALLER_OR_EQUAL, // '<='

         LGREATER, // '>'

     	IS_GREATER_OR_EQUAL, // '>='

         BOOL_OR, // 'or'

         BOOL_AND, // 'and'

         BOOL_XOR, // 'xor'

     	STRING_AND, // '&'

         OR, // '|'

     	EXPON, // '**'

         PLUS, // '+'

         MINUS, // '-'

     	MUL, // '*'

         DIV, // '/'

         MOD, // 'mod'

         REM, // 'rem'

         IN, // 'in'

     	NOT_IN // 'not in'

     }

     private Expression left;

     private InfixExpression.OperatorType operator;

     private Expression right;

     public InfixExpression(int start, int end, Expression left, InfixExpression.OperatorType operator, Expression right) {

         super(start, end);

         if (right == null || left == null ) {

             throw new IllegalArgumentException();

         }

         this.left = left;

         this.right = right;

         this.operator = operator;

     }

     /**

      * Returns the operator of this infix expression.

      * 

      * @return the infix operator

      */

     public InfixExpression.OperatorType getOperator() {

         return this.operator;

     }

     /**

      * Returns the left operand of this infix expression.

      * 

      * @return the left operand node

      */

     public Expression getLeft() {

         return this.left;

     }

     /**

      * Returns the right operand of this infix expression.

      * 

      * @return the right operand node

      */

     public Expression getRight() {

         return this.right;

     }

     @Override

     public void accept(Visitor visitor) {

         visitor.visit(this);

     }

 }