/* * Copyright (c) 1995, 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. */abstract publicclass DivRemExpression extends BinaryArithmeticExpression { /** * constructor */ public DivRemExpression(int op, long where, Expression left, Expression right) { super(op, where, left, right); } /** * Inline */ public Expression inline(Environment env, Context ctx) { // Do not toss out integer divisions or remainders since they // can cause a division by zero. if (type.inMask(TM_INTEGER)) { right = right.inlineValue(env, ctx); if (right.isConstant() && !right.equals(0)) { // We know the division can be elided left = left.inline(env, ctx); return left; } else { left = left.inlineValue(env, ctx); try { return eval().simplify(); } catch (ArithmeticException e) { env.error(where, "arithmetic.exception"); return this; } } } else { // float & double divisions don't cause arithmetic errors return super.inline(env, ctx); } }}
/*
* Copyright (c) 1995, 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.
*/
abstract public
class DivRemExpression extends BinaryArithmeticExpression {
/**
* constructor
*/
public DivRemExpression(int op, long where, Expression left, Expression right) {
super(op, where, left, right);
}
/**
* Inline
*/
public Expression inline(Environment env, Context ctx) {
// Do not toss out integer divisions or remainders since they
// can cause a division by zero.
if (type.inMask(TM_INTEGER)) {
right = right.inlineValue(env, ctx);
if (right.isConstant() && !right.equals(0)) {
// We know the division can be elided
left = left.inline(env, ctx);
return left;
} else {
left = left.inlineValue(env, ctx);
try {
return eval().simplify();
} catch (ArithmeticException e) {
env.error(where, "arithmetic.exception");
return this;
}
}
} else {
// float & double divisions don't cause arithmetic errors
return super.inline(env, ctx);
}
}
}