1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.codemodel.internal; 27 28 /** 29 * If statement, with optional else clause 30 */ 31 32 public class JConditional implements JStatement { 33 34 /** 35 * JExpression to test to determine branching 36 */ 37 private JExpression test = null; 38 39 /** 40 * JBlock of statements for "then" clause 41 */ 42 private JBlock _then = new JBlock(); 43 44 /** 45 * JBlock of statements for optional "else" clause 46 */ 47 private JBlock _else = null; 48 49 /** 50 * Constructor 51 * 52 * @param test 53 * JExpression which will determine branching 54 */ 55 JConditional(JExpression test) { 56 this.test = test; 57 } 58 59 /** 60 * Return the block to be excuted by the "then" branch 61 * 62 * @return Then block 63 */ 64 public JBlock _then() { 65 return _then; 66 } 67 68 /** 69 * Create a block to be executed by "else" branch 70 * 71 * @return Newly generated else block 72 */ 73 public JBlock _else() { 74 if (_else == null) _else = new JBlock(); 75 return _else; 76 } 77 78 /** 79 * Creates <tt>... else if(...) ...</tt> code. 80 */ 81 public JConditional _elseif(JExpression boolExp) { 82 return _else()._if(boolExp); 83 } 84 85 public void state(JFormatter f) { 86 if(test==JExpr.TRUE) { 87 _then.generateBody(f); 88 return; 89 } 90 if(test==JExpr.FALSE) { 91 _else.generateBody(f); 92 return; 93 } 94 95 if (JOp.hasTopOp(test)) { 96 f.p("if ").g(test); 97 } else { 98 f.p("if (").g(test).p(')'); 99 } 100 f.g(_then); 101 if (_else != null) 102 f.p("else").g(_else); 103 f.nl(); 104 } 105 }