Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.codemodel;
/**
* JClass for generating expressions containing operators
*/
abstract public class JOp {
private JOp() {
}
/**
* Determine whether the top level of an expression involves an
* operator.
*/
static boolean hasTopOp(JExpression e) {
return (e instanceof UnaryOp) || (e instanceof BinaryOp);
}
/* -- Unary operators -- */
static private class UnaryOp extends JExpressionImpl {
protected String op;
protected JExpression e;
protected boolean opFirst = true;
UnaryOp(String op, JExpression e) {
this.op = op;
this.e = e;
}
UnaryOp(JExpression e, String op) {
this.op = op;
this.e = e;
opFirst = false;
}
public void generate(JFormatter f) {
if (opFirst)
f.p('(').p(op).g(e).p(')');
else
f.p('(').g(e).p(op).p(')');
}
}
public static JExpression minus(JExpression e) {
return new UnaryOp("-", e);
}
/**
* Logical not '!x'.
*/
public static JExpression not(JExpression e) {
if (e == JExpr.TRUE) return JExpr.FALSE;
if (e == JExpr.FALSE) return JExpr.TRUE;
return new UnaryOp("!", e);
}
public static JExpression complement(JExpression e) {
return new UnaryOp("~", e);
}
static private class TightUnaryOp extends UnaryOp {
TightUnaryOp(JExpression e, String op) {
super(e, op);
}
public void generate(JFormatter f) {
if (opFirst)
f.p(op).g(e);
else
f.g(e).p(op);
}
}
public static JExpression incr(JExpression e) {
return new TightUnaryOp(e, "++");
}
public static JExpression decr(JExpression e) {
return new TightUnaryOp(e, "--");
}
/* -- Binary operators -- */
static private class BinaryOp extends JExpressionImpl {
String op;
JExpression left;
JGenerable right;
BinaryOp(String op, JExpression left, JGenerable right) {
this.left = left;
this.op = op;
this.right = right;
}
public void generate(JFormatter f) {
f.p('(').g(left).p(op).g(right).p(')');
}
}
public static JExpression plus(JExpression left, JExpression right) {
return new BinaryOp("+", left, right);
}
public static JExpression minus(JExpression left, JExpression right) {
return new BinaryOp("-", left, right);
}
public static JExpression mul(JExpression left, JExpression right) {
return new BinaryOp("*", left, right);
}
public static JExpression div(JExpression left, JExpression right) {
return new BinaryOp("/", left, right);
}
public static JExpression mod(JExpression left, JExpression right) {
return new BinaryOp("%", left, right);
}
public static JExpression shl(JExpression left, JExpression right) {
return new BinaryOp("<<", left, right);
}
public static JExpression shr(JExpression left, JExpression right) {
return new BinaryOp(">>", left, right);
}
public static JExpression shrz(JExpression left, JExpression right) {
return new BinaryOp(">>>", left, right);
}
public static JExpression band(JExpression left, JExpression right) {
return new BinaryOp("&", left, right);
}
public static JExpression bor(JExpression left, JExpression right) {
return new BinaryOp("|", left, right);
}
public static JExpression cand(JExpression left, JExpression right) {
if (left == JExpr.TRUE) return right;
if (right == JExpr.TRUE) return left;
if (left == JExpr.FALSE) return left; // JExpr.FALSE
if (right == JExpr.FALSE) return right; // JExpr.FALSE
return new BinaryOp("&&", left, right);
}
public static JExpression cor(JExpression left, JExpression right) {
if (left == JExpr.TRUE) return left; // JExpr.TRUE
if (right == JExpr.TRUE) return right; // JExpr.FALSE
if (left == JExpr.FALSE) return right;
if (right == JExpr.FALSE) return left;
return new BinaryOp("||", left, right);
}
public static JExpression xor(JExpression left, JExpression right) {
return new BinaryOp("^", left, right);
}
public static JExpression lt(JExpression left, JExpression right) {
return new BinaryOp("<", left, right);
}
public static JExpression lte(JExpression left, JExpression right) {
return new BinaryOp("<=", left, right);
}
public static JExpression gt(JExpression left, JExpression right) {
return new BinaryOp(">", left, right);
}
public static JExpression gte(JExpression left, JExpression right) {
return new BinaryOp(">=", left, right);
}
public static JExpression eq(JExpression left, JExpression right) {
return new BinaryOp("==", left, right);
}
public static JExpression ne(JExpression left, JExpression right) {
return new BinaryOp("!=", left, right);
}
public static JExpression _instanceof(JExpression left, JType right) {
return new BinaryOp("instanceof", left, right);
}
/* -- Ternary operators -- */
static private class TernaryOp extends JExpressionImpl {
String op1;
String op2;
JExpression e1;
JExpression e2;
JExpression e3;
TernaryOp(String op1, String op2,
JExpression e1, JExpression e2, JExpression e3) {
this.e1 = e1;
this.op1 = op1;
this.e2 = e2;
this.op2 = op2;
this.e3 = e3;
}
public void generate(JFormatter f) {
f.p('(').g(e1).p(op1).g(e2).p(op2).g(e3).p(')');
}
}
public static JExpression cond(JExpression cond,
JExpression ifTrue, JExpression ifFalse) {
return new TernaryOp("?", ":", cond, ifTrue, ifFalse);
}
}
