ConstGen.java revision 608:7e06bf1dcb09
1/* 2 * Copyright (c) 1999, 2000, 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 * COMPONENT_NAME: idl.toJava 27 * 28 * ORIGINS: 27 29 * 30 * Licensed Materials - Property of IBM 31 * 5639-D57 (C) COPYRIGHT International Business Machines Corp. 1997, 1999 32 * RMI-IIOP v1.0 33 * 34 */ 35 36package com.sun.tools.corba.se.idl.toJavaPortable; 37 38// NOTES: 39 40import java.io.File; 41import java.io.PrintWriter; 42import java.util.Hashtable; 43import java.util.Vector; 44 45import com.sun.tools.corba.se.idl.GenFileStream; 46import com.sun.tools.corba.se.idl.ConstEntry; 47import com.sun.tools.corba.se.idl.ModuleEntry; 48import com.sun.tools.corba.se.idl.PrimitiveEntry; 49import com.sun.tools.corba.se.idl.StringEntry; 50import com.sun.tools.corba.se.idl.SymtabEntry; 51import com.sun.tools.corba.se.idl.TypedefEntry; 52 53/** 54 * 55 **/ 56public class ConstGen implements com.sun.tools.corba.se.idl.ConstGen 57{ 58 /** 59 * Public zero-argument constructor. 60 **/ 61 public ConstGen () 62 { 63 } // ctor 64 65 /** 66 * Generate Java code for an IDL constant. A constant is written to 67 * a new class only when it is not a member of an interface; otherwise 68 * it written to the interface class in which it resides. 69 **/ 70 public void generate (Hashtable symbolTable, ConstEntry c, PrintWriter s) 71 { 72 this.symbolTable = symbolTable; 73 this.c = c; 74 this.stream = s; 75 init (); 76 77 if (c.container () instanceof ModuleEntry) 78 generateConst (); 79 else if (stream != null) 80 writeConstExpr (); 81 } // generate 82 83 /** 84 * Initialize members unique to this generator. 85 **/ 86 protected void init () 87 { 88 } // init 89 90 /** 91 * Generate the class defining the constant. 92 **/ 93 protected void generateConst () 94 { 95 openStream (); 96 if (stream == null) 97 return; 98 writeHeading (); 99 writeBody (); 100 writeClosing (); 101 closeStream (); 102 } // generateConst 103 104 /** 105 * Open a new print stream only if the constant is not a member 106 * of an interface. 107 **/ 108 protected void openStream () 109 { 110 stream = Util.stream (c, ".java"); 111 } // openStream 112 113 /** 114 * Write the heading for the class defining the constant. 115 **/ 116 protected void writeHeading () 117 { 118 Util.writePackage (stream, c); 119 Util.writeProlog (stream, ((GenFileStream)stream).name ()); 120 stream.println ("public interface " + c.name ()); 121 // should not be done according to the mapping 122 // + " extends org.omg.CORBA.portable.IDLEntity"); 123 stream.println ("{"); 124 } // writeHeading 125 126 /** 127 * Write the constant expression and any comment, if present. 128 **/ 129 protected void writeBody () 130 { 131 writeConstExpr (); 132 } // writeBody 133 134 /** 135 * Write the entire constant expression and any comment, if present. 136 **/ 137 protected void writeConstExpr () 138 { 139 if (c.comment () != null) 140 c.comment ().generate (" ", stream); 141 if (c.container () instanceof ModuleEntry) { 142 143 stream.print (" public static final " + Util.javaName (c.type ()) + " value = "); 144 } else { 145 stream.print (" public static final " + Util.javaName (c.type ()) + ' ' + c.name () + " = "); 146 } 147 writeConstValue (c.type ()); 148 } // writeConstExpr 149 150 /** 151 * Write the constant's value according to its type. 152 **/ 153 private void writeConstValue (SymtabEntry type) 154 { 155 if (type instanceof PrimitiveEntry) 156 stream.println ('(' + Util.javaName (type) + ")(" + Util.parseExpression (c.value ()) + ");"); 157 else if (type instanceof StringEntry) 158 stream.println (Util.parseExpression (c.value ()) + ';'); 159 else if (type instanceof TypedefEntry) 160 { 161 while (type instanceof TypedefEntry) 162 type = type.type (); 163 writeConstValue (type); 164 } 165 else 166 stream.println (Util.parseExpression (c.value ()) + ';'); 167 } // writeValue 168 169 /** 170 * Generate any last words and close the class. 171 **/ 172 protected void writeClosing () 173 { 174 stream.println ("}"); 175 } // writeClosing 176 177 /** 178 * Close the print stream, causing the file to be written. 179 **/ 180 protected void closeStream () 181 { 182 stream.close (); 183 } // closeStream 184 185 protected java.util.Hashtable symbolTable = null; 186 protected ConstEntry c = null; 187 protected PrintWriter stream = null; 188} // class ConstGen 189 190 191/*======================================================================================= 192 DATE-AUTHOR ACTION 193 --------------------------------------------------------------------------------------- 194 11sep1997daz Return when print stream is null and container is NOT a module. Fixes 195 -keep option, which causes null print stream to be sent to ConstGen. 196 31jul1997daz Write source comment immediately preceding constant declaration. 197 =======================================================================================*/ 198