/* * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.tools.tree;import sun.tools.java.*;import sun.tools.asm.Assembler;import java.util.Hashtable;/** * WARNING: The contents of this source file are not part of any * supported API. Code that depends on them does so at its own risk: * they are subject to change or removal without notice. */publicclass DivideExpression extends DivRemExpression { /** * constructor */ public DivideExpression(long where, Expression left, Expression right) { super(DIV, where, left, right); } /** * Evaluate */ Expression eval(int a, int b) { return new IntExpression(where, a / b); } Expression eval(long a, long b) { return new LongExpression(where, a / b); } Expression eval(float a, float b) { return new FloatExpression(where, a / b); } Expression eval(double a, double b) { return new DoubleExpression(where, a / b); } /** * Simplify */ Expression simplify() { // This code here was wrong. What if the expression is a float? // In any case, if the expression throws an exception, we // should just throw the exception at run-time. Throwing // it at compile-time is not correct. // (Fix for 4019300) // // if (right.equals(0)) { // throw new ArithmeticException("/ by zero"); // } if (right.equals(1)) { return left; } return this; } /** * Code */ void codeOperation(Environment env, Context ctx, Assembler asm) { asm.add(where, opc_idiv + type.getTypeCodeOffset()); }}
/*
* Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.tools.tree;
import sun.tools.java.*;
import sun.tools.asm.Assembler;
import java.util.Hashtable;
/**
* WARNING: The contents of this source file are not part of any
* supported API. Code that depends on them does so at its own risk:
* they are subject to change or removal without notice.
*/
public
class DivideExpression extends DivRemExpression {
/**
* constructor
*/
public DivideExpression(long where, Expression left, Expression right) {
super(DIV, where, left, right);
}
/**
* Evaluate
*/
Expression eval(int a, int b) {
return new IntExpression(where, a / b);
}
Expression eval(long a, long b) {
return new LongExpression(where, a / b);
}
Expression eval(float a, float b) {
return new FloatExpression(where, a / b);
}
Expression eval(double a, double b) {
return new DoubleExpression(where, a / b);
}
/**
* Simplify
*/
Expression simplify() {
// This code here was wrong. What if the expression is a float?
// In any case, if the expression throws an exception, we
// should just throw the exception at run-time. Throwing
// it at compile-time is not correct.
// (Fix for 4019300)
//
// if (right.equals(0)) {
// throw new ArithmeticException("/ by zero");
// }
if (right.equals(1)) {
return left;
}
return this;
}
/**
* Code
*/
void codeOperation(Environment env, Context ctx, Assembler asm) {
asm.add(where, opc_idiv + type.getTypeCodeOffset());
}
}