| /* |
| * (c) Copyright IBM Corp. 2000, 2001, 2002. |
| * All Rights Reserved. |
| */ |
| package org.eclipse.jdt.internal.debug.eval.ast.instructions; |
| |
| import org.eclipse.jdt.debug.core.IJavaPrimitiveValue; |
| import org.eclipse.jdt.debug.core.IJavaValue; |
| |
| public class RightShiftOperator extends BinaryOperator { |
| public RightShiftOperator(int resultId, int leftTypeId, int rightTypeId, int start) { |
| this(resultId, leftTypeId, rightTypeId, false, start); |
| } |
| |
| protected RightShiftOperator(int resultId, int leftTypeId, int rightTypeId, boolean isAssignmentOperator, int start) { |
| super(resultId, leftTypeId, rightTypeId, isAssignmentOperator, start); |
| } |
| |
| /* |
| * @see BinaryOperator#getBooleanResult(IJavaValue, IJavaValue) |
| */ |
| protected boolean getBooleanResult(IJavaValue leftOperand, IJavaValue rightOperand) { |
| return false; |
| } |
| |
| /* |
| * @see BinaryOperator#getDoubleResult(IJavaValue, IJavaValue) |
| */ |
| protected double getDoubleResult(IJavaValue leftOperand, IJavaValue rightOperand) { |
| return 0; |
| } |
| |
| /* |
| * @see BinaryOperator#getFloatResult(IJavaValue, IJavaValue) |
| */ |
| protected float getFloatResult(IJavaValue leftOperand, IJavaValue rightOperand) { |
| return 0; |
| } |
| |
| /* |
| * @see BinaryOperator#getIntResult(IJavaValue, IJavaValue) |
| */ |
| protected int getIntResult(IJavaValue leftOperand, IJavaValue rightOperand) { |
| // unary type promotion on both operands see 5.6.1 and 15.18 |
| switch (fRightTypeId) { |
| case T_long : |
| return ((IJavaPrimitiveValue) leftOperand).getIntValue() >> ((IJavaPrimitiveValue) rightOperand).getLongValue(); |
| case T_int : |
| case T_short : |
| case T_byte : |
| case T_char : |
| return ((IJavaPrimitiveValue) leftOperand).getIntValue() >> ((IJavaPrimitiveValue) rightOperand).getIntValue(); |
| default : |
| return 0; |
| } |
| } |
| |
| /* |
| * @see BinaryOperator#getLongResult(IJavaValue, IJavaValue) |
| */ |
| protected long getLongResult(IJavaValue leftOperand, IJavaValue rightOperand) { |
| // unary type promotion on both operands see 5.6.1 and 15.18 |
| switch (fRightTypeId) { |
| case T_long : |
| return ((IJavaPrimitiveValue) leftOperand).getLongValue() >> ((IJavaPrimitiveValue) rightOperand).getLongValue(); |
| case T_int : |
| case T_short : |
| case T_byte : |
| case T_char : |
| return ((IJavaPrimitiveValue) leftOperand).getLongValue() >> ((IJavaPrimitiveValue) rightOperand).getIntValue(); |
| default : |
| return 0; |
| } |
| } |
| |
| /* |
| * @see BinaryOperator#getStringResult(IJavaValue, IJavaValue) |
| */ |
| protected String getStringResult(IJavaValue leftOperand, IJavaValue rightOperand) { |
| return null; |
| } |
| |
| protected int getInternResultType() { |
| // unary type promotion on both operands see 5.6.1 and 15.18 |
| return getUnaryPromotionType(fLeftTypeId); |
| } |
| |
| public String toString() { |
| return InstructionsEvaluationMessages.getString("RightShiftOperator._>>___operator_1"); //$NON-NLS-1$ |
| } |
| |
| } |