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| 1 | +/* | |
| 2 | + * Copyright (c) 1994, 2004, 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 sun.tools.javac; | |
| 27 | + | |
| 28 | +import sun.tools.java.*; | |
| 29 | +import sun.tools.tree.*; | |
| 30 | + | |
| 31 | +import java.io.IOException; | |
| 32 | +import java.io.InputStream; | |
| 33 | +import java.util.Vector; | |
| 34 | +import java.util.Enumeration; | |
| 35 | + | |
| 36 | +/** | |
| 37 | + * Batch file parser, this needs more work. | |
| 38 | + * | |
| 39 | + * WARNING: The contents of this source file are not part of any | |
| 40 | + * supported API. Code that depends on them does so at its own risk: | |
| 41 | + * they are subject to change or removal without notice. | |
| 42 | + */ | |
| 43 | +@Deprecated | |
| 44 | +public | |
| 45 | +class BatchParser extends Parser { | |
| 46 | + /** | |
| 47 | + * The current package | |
| 48 | + */ | |
| 49 | + protected Identifier pkg; | |
| 50 | + | |
| 51 | + /** | |
| 52 | + * The current imports | |
| 53 | + */ | |
| 54 | + protected Imports imports; | |
| 55 | + | |
| 56 | + /** | |
| 57 | + * The classes defined in this file | |
| 58 | + */ | |
| 59 | + protected Vector classes; | |
| 60 | + | |
| 61 | + | |
| 62 | + /** | |
| 63 | + * The current class | |
| 64 | + */ | |
| 65 | + protected SourceClass sourceClass; | |
| 66 | + | |
| 67 | + /** | |
| 68 | + * The toplevel environment | |
| 69 | + */ | |
| 70 | + protected Environment toplevelEnv; | |
| 71 | + | |
| 72 | + /** | |
| 73 | + * Create a batch file parser | |
| 74 | + */ | |
| 75 | + public BatchParser(Environment env, InputStream in) throws IOException { | |
| 76 | + super(env, in); | |
| 77 | + | |
| 78 | + imports = new Imports(env); | |
| 79 | + classes = new Vector(); | |
| 80 | + toplevelEnv = imports.newEnvironment(env); | |
| 81 | + } | |
| 82 | + | |
| 83 | + /** | |
| 84 | + * Package declaration | |
| 85 | + */ | |
| 86 | + public void packageDeclaration(long where, IdentifierToken t) { | |
| 87 | + Identifier nm = t.getName(); | |
| 88 | + //System.out.println("package " + nm); | |
| 89 | + if (pkg == null) { | |
| 90 | + // This code has been changed to pass an IdentifierToken, | |
| 91 | + // rather than an Identifier, to setCurrentPackage(). Imports | |
| 92 | + // now needs the location of the token. | |
| 93 | + pkg = t.getName(); | |
| 94 | + imports.setCurrentPackage(t); | |
| 95 | + } else { | |
| 96 | + env.error(where, "package.repeated"); | |
| 97 | + } | |
| 98 | + } | |
| 99 | + | |
| 100 | + /** | |
| 101 | + * Import class | |
| 102 | + */ | |
| 103 | + public void importClass(long pos, IdentifierToken t) { | |
| 104 | + //System.out.println("import class " + t); | |
| 105 | + imports.addClass(t); | |
| 106 | + } | |
| 107 | + | |
| 108 | + /** | |
| 109 | + * Import package | |
| 110 | + */ | |
| 111 | + public void importPackage(long pos, IdentifierToken t) { | |
| 112 | + //System.out.println("import package " + t); | |
| 113 | + imports.addPackage(t); | |
| 114 | + } | |
| 115 | + | |
| 116 | + /** | |
| 117 | + * Define class | |
| 118 | + */ | |
| 119 | + public ClassDefinition beginClass(long where, String doc, int mod, | |
| 120 | + IdentifierToken t, | |
| 121 | + IdentifierToken sup, | |
| 122 | + IdentifierToken interfaces[]) { | |
| 123 | + | |
| 124 | + // If this class is nested, the modifier bits set here will | |
| 125 | + // be copied into the 'SourceMember' object for the inner class | |
| 126 | + // created during the call to 'makeClassDefinition' below. | |
| 127 | + // When writing the class file, we will look there for the | |
| 128 | + // 'untransformed' modifiers. The modifiers in the ClassDefinition | |
| 129 | + // object will end up as the 'transformed' modifiers. Note that | |
| 130 | + // there are some bits set here that are not legal class modifiers | |
| 131 | + // according to the JVMS, e.g., M_PRIVATE and M_STATIC. These are | |
| 132 | + // masked off while writing the class file, but are preserved in | |
| 133 | + // the InnerClasses attributes. | |
| 134 | + | |
| 135 | + if (tracing) toplevelEnv.dtEnter("beginClass: " + sourceClass); | |
| 136 | + | |
| 137 | + SourceClass outerClass = sourceClass; | |
| 138 | + | |
| 139 | + if (outerClass == null && pkg != null) { | |
| 140 | + t = new IdentifierToken(t.getWhere(), | |
| 141 | + Identifier.lookup(pkg, t.getName())); | |
| 142 | + } | |
| 143 | + | |
| 144 | + // The defaults for anonymous and local classes should be documented! | |
| 145 | + | |
| 146 | + if ((mod & M_ANONYMOUS) != 0) { | |
| 147 | + mod |= (M_FINAL | M_PRIVATE); | |
| 148 | + } | |
| 149 | + if ((mod & M_LOCAL) != 0) { | |
| 150 | + mod |= M_PRIVATE; | |
| 151 | + } | |
| 152 | + | |
| 153 | + // Certain modifiers are implied as follows: | |
| 154 | + // | |
| 155 | + // 1. Any interface (nested or not) is implicitly deemed to be abstract, | |
| 156 | + // whether it is explicitly marked so or not. (Java 1.0.) | |
| 157 | + // 2. A interface which is a member of a type is implicitly deemed to | |
| 158 | + // be static, whether it is explicitly marked so or not. (InnerClasses) | |
| 159 | + // 3a. A type which is a member of an interface is implicitly deemed | |
| 160 | + // to be public, whether it is explicitly marked so or not. (InnerClasses) | |
| 161 | + // 3b. A type which is a member of an interface is implicitly deemed | |
| 162 | + // to be static, whether it is explicitly marked so or not. (InnerClasses) | |
| 163 | + | |
| 164 | + if ((mod & M_INTERFACE) != 0) { | |
| 165 | + // Rule 1. | |
| 166 | + mod |= M_ABSTRACT; | |
| 167 | + if (outerClass != null) { | |
| 168 | + // Rule 2. | |
| 169 | + mod |= M_STATIC; | |
| 170 | + } | |
| 171 | + } | |
| 172 | + | |
| 173 | + if (outerClass != null && outerClass.isInterface()) { | |
| 174 | + // Rule 3a. | |
| 175 | + // For interface members, neither 'private' nor 'protected' | |
| 176 | + // are legal modifiers. We avoid setting M_PUBLIC in some | |
| 177 | + // cases in order to avoid interfering with error detection | |
| 178 | + // and reporting. This is patched up, after reporting an | |
| 179 | + // error, by 'SourceClass.addMember'. | |
| 180 | + if ((mod & (M_PRIVATE | M_PROTECTED)) == 0) | |
| 181 | + mod |= M_PUBLIC; | |
| 182 | + // Rule 3b. | |
| 183 | + mod |= M_STATIC; | |
| 184 | + } | |
| 185 | + | |
| 186 | + // For nested classes, we must transform 'protected' to 'public' | |
| 187 | + // and 'private' to package scope. This must be done later, | |
| 188 | + // because any modifiers set here will be copied into the | |
| 189 | + // 'MemberDefinition' for the nested class, which must represent | |
| 190 | + // the original untransformed modifiers. Also, compile-time | |
| 191 | + // checks should be performed against the actual, untransformed | |
| 192 | + // modifiers. This is in contrast to transformations that implement | |
| 193 | + // implicit modifiers, such as M_STATIC and M_FINAL for fields | |
| 194 | + // of interfaces. | |
| 195 | + | |
| 196 | + sourceClass = (SourceClass) | |
| 197 | + toplevelEnv.makeClassDefinition(toplevelEnv, where, t, | |
| 198 | + doc, mod, sup, | |
| 199 | + interfaces, outerClass); | |
| 200 | + | |
| 201 | + sourceClass.getClassDeclaration().setDefinition(sourceClass, CS_PARSED); | |
| 202 | + env = new Environment(toplevelEnv, sourceClass); | |
| 203 | + | |
| 204 | + if (tracing) toplevelEnv.dtEvent("beginClass: SETTING UP DEPENDENCIES"); | |
| 205 | + | |
| 206 | + // The code which adds artificial dependencies between | |
| 207 | + // classes in the same source file has been moved to | |
| 208 | + // BatchEnvironment#parseFile(). | |
| 209 | + | |
| 210 | + if (tracing) toplevelEnv.dtEvent("beginClass: ADDING TO CLASS LIST"); | |
| 211 | + | |
| 212 | + classes.addElement(sourceClass); | |
| 213 | + | |
| 214 | + if (tracing) toplevelEnv.dtExit("beginClass: " + sourceClass); | |
| 215 | + | |
| 216 | + return sourceClass; | |
| 217 | + } | |
| 218 | + | |
| 219 | + /** | |
| 220 | + * Report the current class under construction. | |
| 221 | + */ | |
| 222 | + public ClassDefinition getCurrentClass() { | |
| 223 | + return sourceClass; | |
| 224 | + } | |
| 225 | + | |
| 226 | + /** | |
| 227 | + * End class | |
| 228 | + */ | |
| 229 | + public void endClass(long where, ClassDefinition c) { | |
| 230 | + | |
| 231 | + if (tracing) toplevelEnv.dtEnter("endClass: " + sourceClass); | |
| 232 | + | |
| 233 | + // c == sourceClass; don't bother to check | |
| 234 | + sourceClass.setEndPosition(where); | |
| 235 | + SourceClass outerClass = (SourceClass) sourceClass.getOuterClass(); | |
| 236 | + sourceClass = outerClass; | |
| 237 | + env = toplevelEnv; | |
| 238 | + if (sourceClass != null) | |
| 239 | + env = new Environment(env, sourceClass); | |
| 240 | + | |
| 241 | + if (tracing) toplevelEnv.dtExit("endClass: " + sourceClass); | |
| 242 | + } | |
| 243 | + | |
| 244 | + /** | |
| 245 | + * Define a method | |
| 246 | + */ | |
| 247 | + public void defineField(long where, ClassDefinition c, | |
| 248 | + String doc, int mod, Type t, | |
| 249 | + IdentifierToken name, IdentifierToken args[], | |
| 250 | + IdentifierToken exp[], Node val) { | |
| 251 | + // c == sourceClass; don't bother to check | |
| 252 | + Identifier nm = name.getName(); | |
| 253 | + // Members that are nested classes are not created with 'defineField', | |
| 254 | + // so these transformations do not apply to them. See 'beginClass' above. | |
| 255 | + if (sourceClass.isInterface()) { | |
| 256 | + // Members of interfaces are implicitly public. | |
| 257 | + if ((mod & (M_PRIVATE | M_PROTECTED)) == 0) | |
| 258 | + // For interface members, neither 'private' nor 'protected' | |
| 259 | + // are legal modifiers. Avoid setting M_PUBLIC in some cases | |
| 260 | + // to avoid interfering with later error detection. This will | |
| 261 | + // be fixed up after the error is reported. | |
| 262 | + mod |= M_PUBLIC; | |
| 263 | + // Methods of interfaces are implicitly abstract. | |
| 264 | + // Fields of interfaces are implicitly static and final. | |
| 265 | + if (t.isType(TC_METHOD)) { | |
| 266 | + mod |= M_ABSTRACT; | |
| 267 | + } else { | |
| 268 | + mod |= M_STATIC | M_FINAL; | |
| 269 | + } | |
| 270 | + } | |
| 271 | + if (nm.equals(idInit)) { | |
| 272 | + // The parser reports "idInit" when in reality it has found | |
| 273 | + // that there is no method name at all present. | |
| 274 | + // So, decide if it's really a constructor, or a syntax error. | |
| 275 | + Type rt = t.getReturnType(); | |
| 276 | + Identifier retname = !rt.isType(TC_CLASS) ? idStar /*no match*/ | |
| 277 | + : rt.getClassName(); | |
| 278 | + Identifier clsname = sourceClass.getLocalName(); | |
| 279 | + if (clsname.equals(retname)) { | |
| 280 | + t = Type.tMethod(Type.tVoid, t.getArgumentTypes()); | |
| 281 | + } else if (clsname.equals(retname.getFlatName().getName())) { | |
| 282 | + // It appears to be a constructor with spurious qualification. | |
| 283 | + t = Type.tMethod(Type.tVoid, t.getArgumentTypes()); | |
| 284 | + env.error(where, "invalid.method.decl.qual"); | |
| 285 | + } else if (retname.isQualified() || retname.equals(idStar)) { | |
| 286 | + // It appears to be a type name with no method name. | |
| 287 | + env.error(where, "invalid.method.decl.name"); | |
| 288 | + return; | |
| 289 | + } else { | |
| 290 | + // We assume the type name is missing, even though the | |
| 291 | + // simple name that's present might have been intended | |
| 292 | + // to be a type: "String (){}" vs. "toString(){}". | |
| 293 | + env.error(where, "invalid.method.decl"); | |
| 294 | + return; | |
| 295 | + } | |
| 296 | + } | |
| 297 | + | |
| 298 | + if (args == null && t.isType(TC_METHOD)) { | |
| 299 | + args = new IdentifierToken[0]; | |
| 300 | + } | |
| 301 | + | |
| 302 | + if (exp == null && t.isType(TC_METHOD)) { | |
| 303 | + exp = new IdentifierToken[0]; | |
| 304 | + } | |
| 305 | + | |
| 306 | + MemberDefinition f = env.makeMemberDefinition(env, where, sourceClass, | |
| 307 | + doc, mod, t, nm, | |
| 308 | + args, exp, val); | |
| 309 | + if (env.dump()) { | |
| 310 | + f.print(System.out); | |
| 311 | + } | |
| 312 | + } | |
| 313 | +} | |