Wed, 02 Jun 2010 19:08:47 -0700
6933147: Provided new utility visitors supporting SourceVersion.RELEASE_7
Reviewed-by: jjg
duke@1 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 2002, 2008, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | |
duke@1 | 27 | package com.sun.tools.javah; |
duke@1 | 28 | |
duke@1 | 29 | import java.util.*; |
jjg@416 | 30 | import javax.lang.model.element.Name; |
jjg@416 | 31 | import javax.lang.model.element.TypeElement; |
jjg@416 | 32 | import javax.lang.model.type.ArrayType; |
jjg@416 | 33 | import javax.lang.model.type.DeclaredType; |
jjg@416 | 34 | import javax.lang.model.type.NoType; |
jjg@416 | 35 | import javax.lang.model.type.PrimitiveType; |
jjg@416 | 36 | import javax.lang.model.type.TypeKind; |
jjg@416 | 37 | import javax.lang.model.type.TypeMirror; |
jjg@416 | 38 | import javax.lang.model.type.TypeVariable; |
jjg@416 | 39 | import javax.lang.model.type.TypeVisitor; |
jjg@416 | 40 | import javax.lang.model.util.Elements; |
darcy@575 | 41 | import javax.lang.model.util.SimpleTypeVisitor7; |
duke@1 | 42 | |
duke@1 | 43 | /** |
duke@1 | 44 | * Returns internal type signature. |
duke@1 | 45 | * |
jjg@416 | 46 | * <p><b>This is NOT part of any API supported by Sun Microsystems. |
jjg@416 | 47 | * If you write code that depends on this, you do so at your own |
jjg@416 | 48 | * risk. This code and its internal interfaces are subject to change |
jjg@416 | 49 | * or deletion without notice.</b></p> |
jjg@416 | 50 | * |
duke@1 | 51 | * @author Sucheta Dambalkar |
duke@1 | 52 | */ |
duke@1 | 53 | |
duke@1 | 54 | public class TypeSignature{ |
duke@1 | 55 | |
jjg@416 | 56 | Elements elems; |
duke@1 | 57 | |
duke@1 | 58 | /* Signature Characters */ |
duke@1 | 59 | |
duke@1 | 60 | private static final String SIG_VOID = "V"; |
duke@1 | 61 | private static final String SIG_BOOLEAN = "Z"; |
duke@1 | 62 | private static final String SIG_BYTE = "B"; |
duke@1 | 63 | private static final String SIG_CHAR = "C"; |
duke@1 | 64 | private static final String SIG_SHORT = "S"; |
duke@1 | 65 | private static final String SIG_INT = "I"; |
duke@1 | 66 | private static final String SIG_LONG = "J"; |
duke@1 | 67 | private static final String SIG_FLOAT = "F"; |
duke@1 | 68 | private static final String SIG_DOUBLE = "D"; |
duke@1 | 69 | private static final String SIG_ARRAY = "["; |
duke@1 | 70 | private static final String SIG_CLASS = "L"; |
duke@1 | 71 | |
duke@1 | 72 | |
duke@1 | 73 | |
jjg@416 | 74 | public TypeSignature(Elements elems){ |
jjg@416 | 75 | this.elems = elems; |
duke@1 | 76 | } |
duke@1 | 77 | |
duke@1 | 78 | /* |
duke@1 | 79 | * Returns the type signature of a field according to JVM specs |
duke@1 | 80 | */ |
duke@1 | 81 | public String getTypeSignature(String javasignature){ |
duke@1 | 82 | return getParamJVMSignature(javasignature); |
duke@1 | 83 | } |
duke@1 | 84 | |
duke@1 | 85 | /* |
duke@1 | 86 | * Returns the type signature of a method according to JVM specs |
duke@1 | 87 | */ |
jjg@416 | 88 | public String getTypeSignature(String javasignature, TypeMirror returnType){ |
duke@1 | 89 | String signature = null; //Java type signature. |
duke@1 | 90 | String typeSignature = null; //Internal type signature. |
jjg@416 | 91 | List<String> params = new ArrayList<String>(); //List of parameters. |
duke@1 | 92 | String paramsig = null; //Java parameter signature. |
duke@1 | 93 | String paramJVMSig = null; //Internal parameter signature. |
duke@1 | 94 | String returnSig = null; //Java return type signature. |
duke@1 | 95 | String returnJVMType = null; //Internal return type signature. |
jjg@416 | 96 | int dimensions = 0; //Array dimension. |
duke@1 | 97 | |
duke@1 | 98 | int startIndex = -1; |
duke@1 | 99 | int endIndex = -1; |
duke@1 | 100 | StringTokenizer st = null; |
duke@1 | 101 | int i = 0; |
duke@1 | 102 | |
duke@1 | 103 | // Gets the actual java signature without parentheses. |
jjg@416 | 104 | if (javasignature != null) { |
duke@1 | 105 | startIndex = javasignature.indexOf("("); |
duke@1 | 106 | endIndex = javasignature.indexOf(")"); |
duke@1 | 107 | } |
duke@1 | 108 | |
jjg@416 | 109 | if (((startIndex != -1) && (endIndex != -1)) |
jjg@416 | 110 | &&(startIndex+1 < javasignature.length()) |
jjg@416 | 111 | &&(endIndex < javasignature.length())) { |
duke@1 | 112 | signature = javasignature.substring(startIndex+1, endIndex); |
duke@1 | 113 | } |
duke@1 | 114 | |
duke@1 | 115 | // Separates parameters. |
jjg@416 | 116 | if (signature != null) { |
jjg@416 | 117 | if (signature.indexOf(",") != -1) { |
duke@1 | 118 | st = new StringTokenizer(signature, ","); |
jjg@416 | 119 | if (st != null) { |
duke@1 | 120 | while (st.hasMoreTokens()) { |
duke@1 | 121 | params.add(st.nextToken()); |
duke@1 | 122 | } |
duke@1 | 123 | } |
jjg@416 | 124 | } else { |
duke@1 | 125 | params.add(signature); |
duke@1 | 126 | } |
duke@1 | 127 | } |
duke@1 | 128 | |
duke@1 | 129 | /* JVM type signature. */ |
duke@1 | 130 | typeSignature = "("; |
duke@1 | 131 | |
duke@1 | 132 | // Gets indivisual internal parameter signature. |
jjg@416 | 133 | while (params.isEmpty() != true) { |
jjg@416 | 134 | paramsig = params.remove(i).trim(); |
duke@1 | 135 | paramJVMSig = getParamJVMSignature(paramsig); |
jjg@416 | 136 | if (paramJVMSig != null) { |
duke@1 | 137 | typeSignature += paramJVMSig; |
duke@1 | 138 | } |
duke@1 | 139 | } |
duke@1 | 140 | |
duke@1 | 141 | typeSignature += ")"; |
duke@1 | 142 | |
duke@1 | 143 | // Get internal return type signature. |
duke@1 | 144 | |
duke@1 | 145 | returnJVMType = ""; |
jjg@416 | 146 | if (returnType != null) { |
jjg@416 | 147 | dimensions = dimensions(returnType); |
duke@1 | 148 | } |
duke@1 | 149 | |
jjg@416 | 150 | //Gets array dimension of return type. |
jjg@416 | 151 | while (dimensions-- > 0) { |
jjg@416 | 152 | returnJVMType += "["; |
duke@1 | 153 | } |
jjg@416 | 154 | if (returnType != null) { |
jjg@416 | 155 | returnSig = qualifiedTypeName(returnType); |
duke@1 | 156 | returnJVMType += getComponentType(returnSig); |
jjg@416 | 157 | } else { |
duke@1 | 158 | System.out.println("Invalid return type."); |
duke@1 | 159 | } |
duke@1 | 160 | |
duke@1 | 161 | typeSignature += returnJVMType; |
jjg@416 | 162 | |
duke@1 | 163 | return typeSignature; |
duke@1 | 164 | } |
duke@1 | 165 | |
duke@1 | 166 | /* |
duke@1 | 167 | * Returns internal signature of a parameter. |
duke@1 | 168 | */ |
jjg@416 | 169 | private String getParamJVMSignature(String paramsig) { |
duke@1 | 170 | String paramJVMSig = ""; |
duke@1 | 171 | String componentType =""; |
duke@1 | 172 | |
duke@1 | 173 | if(paramsig != null){ |
duke@1 | 174 | |
duke@1 | 175 | if(paramsig.indexOf("[]") != -1) { |
duke@1 | 176 | // Gets array dimension. |
duke@1 | 177 | int endindex = paramsig.indexOf("[]"); |
duke@1 | 178 | componentType = paramsig.substring(0, endindex); |
duke@1 | 179 | String dimensionString = paramsig.substring(endindex); |
duke@1 | 180 | if(dimensionString != null){ |
duke@1 | 181 | while(dimensionString.indexOf("[]") != -1){ |
duke@1 | 182 | paramJVMSig += "["; |
duke@1 | 183 | int beginindex = dimensionString.indexOf("]") + 1; |
duke@1 | 184 | if(beginindex < dimensionString.length()){ |
duke@1 | 185 | dimensionString = dimensionString.substring(beginindex); |
duke@1 | 186 | }else |
duke@1 | 187 | dimensionString = ""; |
duke@1 | 188 | } |
duke@1 | 189 | } |
duke@1 | 190 | } else componentType = paramsig; |
duke@1 | 191 | |
duke@1 | 192 | paramJVMSig += getComponentType(componentType); |
duke@1 | 193 | } |
duke@1 | 194 | return paramJVMSig; |
duke@1 | 195 | } |
duke@1 | 196 | |
duke@1 | 197 | /* |
duke@1 | 198 | * Returns internal signature of a component. |
duke@1 | 199 | */ |
duke@1 | 200 | private String getComponentType(String componentType){ |
duke@1 | 201 | |
duke@1 | 202 | String JVMSig = ""; |
duke@1 | 203 | |
duke@1 | 204 | if(componentType != null){ |
duke@1 | 205 | if(componentType.equals("void")) JVMSig += SIG_VOID ; |
duke@1 | 206 | else if(componentType.equals("boolean")) JVMSig += SIG_BOOLEAN ; |
duke@1 | 207 | else if(componentType.equals("byte")) JVMSig += SIG_BYTE ; |
duke@1 | 208 | else if(componentType.equals("char")) JVMSig += SIG_CHAR ; |
duke@1 | 209 | else if(componentType.equals("short")) JVMSig += SIG_SHORT ; |
duke@1 | 210 | else if(componentType.equals("int")) JVMSig += SIG_INT ; |
duke@1 | 211 | else if(componentType.equals("long")) JVMSig += SIG_LONG ; |
duke@1 | 212 | else if(componentType.equals("float")) JVMSig += SIG_FLOAT ; |
duke@1 | 213 | else if(componentType.equals("double")) JVMSig += SIG_DOUBLE ; |
duke@1 | 214 | else { |
duke@1 | 215 | if(!componentType.equals("")){ |
jjg@416 | 216 | TypeElement classNameDoc = elems.getTypeElement(componentType); |
duke@1 | 217 | |
duke@1 | 218 | if(classNameDoc == null){ |
jjg@416 | 219 | System.out.println("Invalid class type for " + componentType); |
jjg@416 | 220 | new Exception().printStackTrace(); |
duke@1 | 221 | }else { |
jjg@416 | 222 | String classname = classNameDoc.getQualifiedName().toString(); |
duke@1 | 223 | String newclassname = classname.replace('.', '/'); |
duke@1 | 224 | JVMSig += "L"; |
duke@1 | 225 | JVMSig += newclassname; |
duke@1 | 226 | JVMSig += ";"; |
duke@1 | 227 | } |
duke@1 | 228 | } |
duke@1 | 229 | } |
duke@1 | 230 | } |
duke@1 | 231 | return JVMSig; |
duke@1 | 232 | } |
jjg@416 | 233 | |
jjg@416 | 234 | int dimensions(TypeMirror t) { |
jjg@416 | 235 | if (t.getKind() != TypeKind.ARRAY) |
jjg@416 | 236 | return 0; |
jjg@416 | 237 | return 1 + dimensions(((ArrayType) t).getComponentType()); |
jjg@416 | 238 | } |
jjg@416 | 239 | |
jjg@416 | 240 | |
jjg@416 | 241 | String qualifiedTypeName(TypeMirror type) { |
darcy@575 | 242 | TypeVisitor<Name, Void> v = new SimpleTypeVisitor7<Name, Void>() { |
jjg@416 | 243 | @Override |
jjg@416 | 244 | public Name visitArray(ArrayType t, Void p) { |
jjg@416 | 245 | return t.getComponentType().accept(this, p); |
jjg@416 | 246 | } |
jjg@416 | 247 | |
jjg@416 | 248 | @Override |
jjg@416 | 249 | public Name visitDeclared(DeclaredType t, Void p) { |
jjg@416 | 250 | return ((TypeElement) t.asElement()).getQualifiedName(); |
jjg@416 | 251 | } |
jjg@416 | 252 | |
jjg@416 | 253 | @Override |
jjg@416 | 254 | public Name visitPrimitive(PrimitiveType t, Void p) { |
jjg@416 | 255 | return elems.getName(t.toString()); |
jjg@416 | 256 | } |
jjg@416 | 257 | |
jjg@416 | 258 | @Override |
jjg@416 | 259 | public Name visitNoType(NoType t, Void p) { |
jjg@416 | 260 | if (t.getKind() == TypeKind.VOID) |
jjg@416 | 261 | return elems.getName("void"); |
jjg@416 | 262 | return defaultAction(t, p); |
jjg@416 | 263 | } |
jjg@416 | 264 | |
jjg@416 | 265 | @Override |
jjg@416 | 266 | public Name visitTypeVariable(TypeVariable t, Void p) { |
jjg@416 | 267 | return t.getUpperBound().accept(this, p); |
jjg@416 | 268 | } |
jjg@416 | 269 | }; |
jjg@416 | 270 | return v.visit(type).toString(); |
jjg@416 | 271 | } |
duke@1 | 272 | } |