1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/javac/jvm/ClassReader.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,2963 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.javac.jvm;
1.30 +
1.31 +import java.io.*;
1.32 +import java.net.URI;
1.33 +import java.net.URISyntaxException;
1.34 +import java.nio.CharBuffer;
1.35 +import java.util.Arrays;
1.36 +import java.util.EnumSet;
1.37 +import java.util.HashMap;
1.38 +import java.util.HashSet;
1.39 +import java.util.Map;
1.40 +import java.util.Set;
1.41 +import javax.lang.model.SourceVersion;
1.42 +import javax.tools.JavaFileObject;
1.43 +import javax.tools.JavaFileManager;
1.44 +import javax.tools.JavaFileManager.Location;
1.45 +import javax.tools.StandardJavaFileManager;
1.46 +
1.47 +import static javax.tools.StandardLocation.*;
1.48 +
1.49 +import com.sun.tools.javac.comp.Annotate;
1.50 +import com.sun.tools.javac.code.*;
1.51 +import com.sun.tools.javac.code.Lint.LintCategory;
1.52 +import com.sun.tools.javac.code.Type.*;
1.53 +import com.sun.tools.javac.code.Symbol.*;
1.54 +import com.sun.tools.javac.code.Symtab;
1.55 +import com.sun.tools.javac.file.BaseFileObject;
1.56 +import com.sun.tools.javac.util.*;
1.57 +import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
1.58 +
1.59 +import static com.sun.tools.javac.code.Flags.*;
1.60 +import static com.sun.tools.javac.code.Kinds.*;
1.61 +import static com.sun.tools.javac.code.TypeTag.CLASS;
1.62 +import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
1.63 +import static com.sun.tools.javac.jvm.ClassFile.*;
1.64 +import static com.sun.tools.javac.jvm.ClassFile.Version.*;
1.65 +
1.66 +import static com.sun.tools.javac.main.Option.*;
1.67 +
1.68 +/** This class provides operations to read a classfile into an internal
1.69 + * representation. The internal representation is anchored in a
1.70 + * ClassSymbol which contains in its scope symbol representations
1.71 + * for all other definitions in the classfile. Top-level Classes themselves
1.72 + * appear as members of the scopes of PackageSymbols.
1.73 + *
1.74 + * <p><b>This is NOT part of any supported API.
1.75 + * If you write code that depends on this, you do so at your own risk.
1.76 + * This code and its internal interfaces are subject to change or
1.77 + * deletion without notice.</b>
1.78 + */
1.79 +public class ClassReader {
1.80 + /** The context key for the class reader. */
1.81 + protected static final Context.Key<ClassReader> classReaderKey =
1.82 + new Context.Key<ClassReader>();
1.83 +
1.84 + public static final int INITIAL_BUFFER_SIZE = 0x0fff0;
1.85 +
1.86 + Annotate annotate;
1.87 +
1.88 + /** Switch: verbose output.
1.89 + */
1.90 + boolean verbose;
1.91 +
1.92 + /** Switch: check class file for correct minor version, unrecognized
1.93 + * attributes.
1.94 + */
1.95 + boolean checkClassFile;
1.96 +
1.97 + /** Switch: read constant pool and code sections. This switch is initially
1.98 + * set to false but can be turned on from outside.
1.99 + */
1.100 + public boolean readAllOfClassFile = false;
1.101 +
1.102 + /** Switch: read GJ signature information.
1.103 + */
1.104 + boolean allowGenerics;
1.105 +
1.106 + /** Switch: read varargs attribute.
1.107 + */
1.108 + boolean allowVarargs;
1.109 +
1.110 + /** Switch: allow annotations.
1.111 + */
1.112 + boolean allowAnnotations;
1.113 +
1.114 + /** Switch: allow simplified varargs.
1.115 + */
1.116 + boolean allowSimplifiedVarargs;
1.117 +
1.118 + /** Lint option: warn about classfile issues
1.119 + */
1.120 + boolean lintClassfile;
1.121 +
1.122 + /** Switch: preserve parameter names from the variable table.
1.123 + */
1.124 + public boolean saveParameterNames;
1.125 +
1.126 + /**
1.127 + * Switch: cache completion failures unless -XDdev is used
1.128 + */
1.129 + private boolean cacheCompletionFailure;
1.130 +
1.131 + /**
1.132 + * Switch: prefer source files instead of newer when both source
1.133 + * and class are available
1.134 + **/
1.135 + public boolean preferSource;
1.136 +
1.137 + /**
1.138 + * The currently selected profile.
1.139 + */
1.140 + public final Profile profile;
1.141 +
1.142 + /** The log to use for verbose output
1.143 + */
1.144 + final Log log;
1.145 +
1.146 + /** The symbol table. */
1.147 + Symtab syms;
1.148 +
1.149 + Types types;
1.150 +
1.151 + /** The name table. */
1.152 + final Names names;
1.153 +
1.154 + /** Force a completion failure on this name
1.155 + */
1.156 + final Name completionFailureName;
1.157 +
1.158 + /** Access to files
1.159 + */
1.160 + private final JavaFileManager fileManager;
1.161 +
1.162 + /** Factory for diagnostics
1.163 + */
1.164 + JCDiagnostic.Factory diagFactory;
1.165 +
1.166 + /** Can be reassigned from outside:
1.167 + * the completer to be used for ".java" files. If this remains unassigned
1.168 + * ".java" files will not be loaded.
1.169 + */
1.170 + public SourceCompleter sourceCompleter = null;
1.171 +
1.172 + /** A hashtable containing the encountered top-level and member classes,
1.173 + * indexed by flat names. The table does not contain local classes.
1.174 + */
1.175 + private Map<Name,ClassSymbol> classes;
1.176 +
1.177 + /** A hashtable containing the encountered packages.
1.178 + */
1.179 + private Map<Name, PackageSymbol> packages;
1.180 +
1.181 + /** The current scope where type variables are entered.
1.182 + */
1.183 + protected Scope typevars;
1.184 +
1.185 + /** The path name of the class file currently being read.
1.186 + */
1.187 + protected JavaFileObject currentClassFile = null;
1.188 +
1.189 + /** The class or method currently being read.
1.190 + */
1.191 + protected Symbol currentOwner = null;
1.192 +
1.193 + /** The buffer containing the currently read class file.
1.194 + */
1.195 + byte[] buf = new byte[INITIAL_BUFFER_SIZE];
1.196 +
1.197 + /** The current input pointer.
1.198 + */
1.199 + protected int bp;
1.200 +
1.201 + /** The objects of the constant pool.
1.202 + */
1.203 + Object[] poolObj;
1.204 +
1.205 + /** For every constant pool entry, an index into buf where the
1.206 + * defining section of the entry is found.
1.207 + */
1.208 + int[] poolIdx;
1.209 +
1.210 + /** The major version number of the class file being read. */
1.211 + int majorVersion;
1.212 + /** The minor version number of the class file being read. */
1.213 + int minorVersion;
1.214 +
1.215 + /** A table to hold the constant pool indices for method parameter
1.216 + * names, as given in LocalVariableTable attributes.
1.217 + */
1.218 + int[] parameterNameIndices;
1.219 +
1.220 + /**
1.221 + * Whether or not any parameter names have been found.
1.222 + */
1.223 + boolean haveParameterNameIndices;
1.224 +
1.225 + /** Set this to false every time we start reading a method
1.226 + * and are saving parameter names. Set it to true when we see
1.227 + * MethodParameters, if it's set when we see a LocalVariableTable,
1.228 + * then we ignore the parameter names from the LVT.
1.229 + */
1.230 + boolean sawMethodParameters;
1.231 +
1.232 + /**
1.233 + * The set of attribute names for which warnings have been generated for the current class
1.234 + */
1.235 + Set<Name> warnedAttrs = new HashSet<Name>();
1.236 +
1.237 + /**
1.238 + * Completer that delegates to the complete-method of this class.
1.239 + */
1.240 + private final Completer thisCompleter = new Completer() {
1.241 + @Override
1.242 + public void complete(Symbol sym) throws CompletionFailure {
1.243 + ClassReader.this.complete(sym);
1.244 + }
1.245 + };
1.246 +
1.247 +
1.248 + /** Get the ClassReader instance for this invocation. */
1.249 + public static ClassReader instance(Context context) {
1.250 + ClassReader instance = context.get(classReaderKey);
1.251 + if (instance == null)
1.252 + instance = new ClassReader(context, true);
1.253 + return instance;
1.254 + }
1.255 +
1.256 + /** Initialize classes and packages, treating this as the definitive classreader. */
1.257 + public void init(Symtab syms) {
1.258 + init(syms, true);
1.259 + }
1.260 +
1.261 + /** Initialize classes and packages, optionally treating this as
1.262 + * the definitive classreader.
1.263 + */
1.264 + private void init(Symtab syms, boolean definitive) {
1.265 + if (classes != null) return;
1.266 +
1.267 + if (definitive) {
1.268 + Assert.check(packages == null || packages == syms.packages);
1.269 + packages = syms.packages;
1.270 + Assert.check(classes == null || classes == syms.classes);
1.271 + classes = syms.classes;
1.272 + } else {
1.273 + packages = new HashMap<Name, PackageSymbol>();
1.274 + classes = new HashMap<Name, ClassSymbol>();
1.275 + }
1.276 +
1.277 + packages.put(names.empty, syms.rootPackage);
1.278 + syms.rootPackage.completer = thisCompleter;
1.279 + syms.unnamedPackage.completer = thisCompleter;
1.280 + }
1.281 +
1.282 + /** Construct a new class reader, optionally treated as the
1.283 + * definitive classreader for this invocation.
1.284 + */
1.285 + protected ClassReader(Context context, boolean definitive) {
1.286 + if (definitive) context.put(classReaderKey, this);
1.287 +
1.288 + names = Names.instance(context);
1.289 + syms = Symtab.instance(context);
1.290 + types = Types.instance(context);
1.291 + fileManager = context.get(JavaFileManager.class);
1.292 + if (fileManager == null)
1.293 + throw new AssertionError("FileManager initialization error");
1.294 + diagFactory = JCDiagnostic.Factory.instance(context);
1.295 +
1.296 + init(syms, definitive);
1.297 + log = Log.instance(context);
1.298 +
1.299 + Options options = Options.instance(context);
1.300 + annotate = Annotate.instance(context);
1.301 + verbose = options.isSet(VERBOSE);
1.302 + checkClassFile = options.isSet("-checkclassfile");
1.303 +
1.304 + Source source = Source.instance(context);
1.305 + allowGenerics = source.allowGenerics();
1.306 + allowVarargs = source.allowVarargs();
1.307 + allowAnnotations = source.allowAnnotations();
1.308 + allowSimplifiedVarargs = source.allowSimplifiedVarargs();
1.309 +
1.310 + saveParameterNames = options.isSet("save-parameter-names");
1.311 + cacheCompletionFailure = options.isUnset("dev");
1.312 + preferSource = "source".equals(options.get("-Xprefer"));
1.313 +
1.314 + profile = Profile.instance(context);
1.315 +
1.316 + completionFailureName =
1.317 + options.isSet("failcomplete")
1.318 + ? names.fromString(options.get("failcomplete"))
1.319 + : null;
1.320 +
1.321 + typevars = new Scope(syms.noSymbol);
1.322 +
1.323 + lintClassfile = Lint.instance(context).isEnabled(LintCategory.CLASSFILE);
1.324 +
1.325 + initAttributeReaders();
1.326 + }
1.327 +
1.328 + /** Add member to class unless it is synthetic.
1.329 + */
1.330 + private void enterMember(ClassSymbol c, Symbol sym) {
1.331 + // Synthetic members are not entered -- reason lost to history (optimization?).
1.332 + // Lambda methods must be entered because they may have inner classes (which reference them)
1.333 + if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC || sym.name.startsWith(names.lambda))
1.334 + c.members_field.enter(sym);
1.335 + }
1.336 +
1.337 +/************************************************************************
1.338 + * Error Diagnoses
1.339 + ***********************************************************************/
1.340 +
1.341 +
1.342 + public class BadClassFile extends CompletionFailure {
1.343 + private static final long serialVersionUID = 0;
1.344 +
1.345 + public BadClassFile(TypeSymbol sym, JavaFileObject file, JCDiagnostic diag) {
1.346 + super(sym, createBadClassFileDiagnostic(file, diag));
1.347 + }
1.348 + }
1.349 + // where
1.350 + private JCDiagnostic createBadClassFileDiagnostic(JavaFileObject file, JCDiagnostic diag) {
1.351 + String key = (file.getKind() == JavaFileObject.Kind.SOURCE
1.352 + ? "bad.source.file.header" : "bad.class.file.header");
1.353 + return diagFactory.fragment(key, file, diag);
1.354 + }
1.355 +
1.356 + public BadClassFile badClassFile(String key, Object... args) {
1.357 + return new BadClassFile (
1.358 + currentOwner.enclClass(),
1.359 + currentClassFile,
1.360 + diagFactory.fragment(key, args));
1.361 + }
1.362 +
1.363 +/************************************************************************
1.364 + * Buffer Access
1.365 + ***********************************************************************/
1.366 +
1.367 + /** Read a character.
1.368 + */
1.369 + char nextChar() {
1.370 + return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF));
1.371 + }
1.372 +
1.373 + /** Read a byte.
1.374 + */
1.375 + int nextByte() {
1.376 + return buf[bp++] & 0xFF;
1.377 + }
1.378 +
1.379 + /** Read an integer.
1.380 + */
1.381 + int nextInt() {
1.382 + return
1.383 + ((buf[bp++] & 0xFF) << 24) +
1.384 + ((buf[bp++] & 0xFF) << 16) +
1.385 + ((buf[bp++] & 0xFF) << 8) +
1.386 + (buf[bp++] & 0xFF);
1.387 + }
1.388 +
1.389 + /** Extract a character at position bp from buf.
1.390 + */
1.391 + char getChar(int bp) {
1.392 + return
1.393 + (char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF));
1.394 + }
1.395 +
1.396 + /** Extract an integer at position bp from buf.
1.397 + */
1.398 + int getInt(int bp) {
1.399 + return
1.400 + ((buf[bp] & 0xFF) << 24) +
1.401 + ((buf[bp+1] & 0xFF) << 16) +
1.402 + ((buf[bp+2] & 0xFF) << 8) +
1.403 + (buf[bp+3] & 0xFF);
1.404 + }
1.405 +
1.406 +
1.407 + /** Extract a long integer at position bp from buf.
1.408 + */
1.409 + long getLong(int bp) {
1.410 + DataInputStream bufin =
1.411 + new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
1.412 + try {
1.413 + return bufin.readLong();
1.414 + } catch (IOException e) {
1.415 + throw new AssertionError(e);
1.416 + }
1.417 + }
1.418 +
1.419 + /** Extract a float at position bp from buf.
1.420 + */
1.421 + float getFloat(int bp) {
1.422 + DataInputStream bufin =
1.423 + new DataInputStream(new ByteArrayInputStream(buf, bp, 4));
1.424 + try {
1.425 + return bufin.readFloat();
1.426 + } catch (IOException e) {
1.427 + throw new AssertionError(e);
1.428 + }
1.429 + }
1.430 +
1.431 + /** Extract a double at position bp from buf.
1.432 + */
1.433 + double getDouble(int bp) {
1.434 + DataInputStream bufin =
1.435 + new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
1.436 + try {
1.437 + return bufin.readDouble();
1.438 + } catch (IOException e) {
1.439 + throw new AssertionError(e);
1.440 + }
1.441 + }
1.442 +
1.443 +/************************************************************************
1.444 + * Constant Pool Access
1.445 + ***********************************************************************/
1.446 +
1.447 + /** Index all constant pool entries, writing their start addresses into
1.448 + * poolIdx.
1.449 + */
1.450 + void indexPool() {
1.451 + poolIdx = new int[nextChar()];
1.452 + poolObj = new Object[poolIdx.length];
1.453 + int i = 1;
1.454 + while (i < poolIdx.length) {
1.455 + poolIdx[i++] = bp;
1.456 + byte tag = buf[bp++];
1.457 + switch (tag) {
1.458 + case CONSTANT_Utf8: case CONSTANT_Unicode: {
1.459 + int len = nextChar();
1.460 + bp = bp + len;
1.461 + break;
1.462 + }
1.463 + case CONSTANT_Class:
1.464 + case CONSTANT_String:
1.465 + case CONSTANT_MethodType:
1.466 + bp = bp + 2;
1.467 + break;
1.468 + case CONSTANT_MethodHandle:
1.469 + bp = bp + 3;
1.470 + break;
1.471 + case CONSTANT_Fieldref:
1.472 + case CONSTANT_Methodref:
1.473 + case CONSTANT_InterfaceMethodref:
1.474 + case CONSTANT_NameandType:
1.475 + case CONSTANT_Integer:
1.476 + case CONSTANT_Float:
1.477 + case CONSTANT_InvokeDynamic:
1.478 + bp = bp + 4;
1.479 + break;
1.480 + case CONSTANT_Long:
1.481 + case CONSTANT_Double:
1.482 + bp = bp + 8;
1.483 + i++;
1.484 + break;
1.485 + default:
1.486 + throw badClassFile("bad.const.pool.tag.at",
1.487 + Byte.toString(tag),
1.488 + Integer.toString(bp -1));
1.489 + }
1.490 + }
1.491 + }
1.492 +
1.493 + /** Read constant pool entry at start address i, use pool as a cache.
1.494 + */
1.495 + Object readPool(int i) {
1.496 + Object result = poolObj[i];
1.497 + if (result != null) return result;
1.498 +
1.499 + int index = poolIdx[i];
1.500 + if (index == 0) return null;
1.501 +
1.502 + byte tag = buf[index];
1.503 + switch (tag) {
1.504 + case CONSTANT_Utf8:
1.505 + poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1));
1.506 + break;
1.507 + case CONSTANT_Unicode:
1.508 + throw badClassFile("unicode.str.not.supported");
1.509 + case CONSTANT_Class:
1.510 + poolObj[i] = readClassOrType(getChar(index + 1));
1.511 + break;
1.512 + case CONSTANT_String:
1.513 + // FIXME: (footprint) do not use toString here
1.514 + poolObj[i] = readName(getChar(index + 1)).toString();
1.515 + break;
1.516 + case CONSTANT_Fieldref: {
1.517 + ClassSymbol owner = readClassSymbol(getChar(index + 1));
1.518 + NameAndType nt = readNameAndType(getChar(index + 3));
1.519 + poolObj[i] = new VarSymbol(0, nt.name, nt.uniqueType.type, owner);
1.520 + break;
1.521 + }
1.522 + case CONSTANT_Methodref:
1.523 + case CONSTANT_InterfaceMethodref: {
1.524 + ClassSymbol owner = readClassSymbol(getChar(index + 1));
1.525 + NameAndType nt = readNameAndType(getChar(index + 3));
1.526 + poolObj[i] = new MethodSymbol(0, nt.name, nt.uniqueType.type, owner);
1.527 + break;
1.528 + }
1.529 + case CONSTANT_NameandType:
1.530 + poolObj[i] = new NameAndType(
1.531 + readName(getChar(index + 1)),
1.532 + readType(getChar(index + 3)), types);
1.533 + break;
1.534 + case CONSTANT_Integer:
1.535 + poolObj[i] = getInt(index + 1);
1.536 + break;
1.537 + case CONSTANT_Float:
1.538 + poolObj[i] = new Float(getFloat(index + 1));
1.539 + break;
1.540 + case CONSTANT_Long:
1.541 + poolObj[i] = new Long(getLong(index + 1));
1.542 + break;
1.543 + case CONSTANT_Double:
1.544 + poolObj[i] = new Double(getDouble(index + 1));
1.545 + break;
1.546 + case CONSTANT_MethodHandle:
1.547 + skipBytes(4);
1.548 + break;
1.549 + case CONSTANT_MethodType:
1.550 + skipBytes(3);
1.551 + break;
1.552 + case CONSTANT_InvokeDynamic:
1.553 + skipBytes(5);
1.554 + break;
1.555 + default:
1.556 + throw badClassFile("bad.const.pool.tag", Byte.toString(tag));
1.557 + }
1.558 + return poolObj[i];
1.559 + }
1.560 +
1.561 + /** Read signature and convert to type.
1.562 + */
1.563 + Type readType(int i) {
1.564 + int index = poolIdx[i];
1.565 + return sigToType(buf, index + 3, getChar(index + 1));
1.566 + }
1.567 +
1.568 + /** If name is an array type or class signature, return the
1.569 + * corresponding type; otherwise return a ClassSymbol with given name.
1.570 + */
1.571 + Object readClassOrType(int i) {
1.572 + int index = poolIdx[i];
1.573 + int len = getChar(index + 1);
1.574 + int start = index + 3;
1.575 + Assert.check(buf[start] == '[' || buf[start + len - 1] != ';');
1.576 + // by the above assertion, the following test can be
1.577 + // simplified to (buf[start] == '[')
1.578 + return (buf[start] == '[' || buf[start + len - 1] == ';')
1.579 + ? (Object)sigToType(buf, start, len)
1.580 + : (Object)enterClass(names.fromUtf(internalize(buf, start,
1.581 + len)));
1.582 + }
1.583 +
1.584 + /** Read signature and convert to type parameters.
1.585 + */
1.586 + List<Type> readTypeParams(int i) {
1.587 + int index = poolIdx[i];
1.588 + return sigToTypeParams(buf, index + 3, getChar(index + 1));
1.589 + }
1.590 +
1.591 + /** Read class entry.
1.592 + */
1.593 + ClassSymbol readClassSymbol(int i) {
1.594 + Object obj = readPool(i);
1.595 + if (obj != null && !(obj instanceof ClassSymbol))
1.596 + throw badClassFile("bad.const.pool.entry",
1.597 + currentClassFile.toString(),
1.598 + "CONSTANT_Class_info", i);
1.599 + return (ClassSymbol)obj;
1.600 + }
1.601 +
1.602 + /** Read name.
1.603 + */
1.604 + Name readName(int i) {
1.605 + Object obj = readPool(i);
1.606 + if (obj != null && !(obj instanceof Name))
1.607 + throw badClassFile("bad.const.pool.entry",
1.608 + currentClassFile.toString(),
1.609 + "CONSTANT_Utf8_info or CONSTANT_String_info", i);
1.610 + return (Name)obj;
1.611 + }
1.612 +
1.613 + /** Read name and type.
1.614 + */
1.615 + NameAndType readNameAndType(int i) {
1.616 + Object obj = readPool(i);
1.617 + if (obj != null && !(obj instanceof NameAndType))
1.618 + throw badClassFile("bad.const.pool.entry",
1.619 + currentClassFile.toString(),
1.620 + "CONSTANT_NameAndType_info", i);
1.621 + return (NameAndType)obj;
1.622 + }
1.623 +
1.624 +/************************************************************************
1.625 + * Reading Types
1.626 + ***********************************************************************/
1.627 +
1.628 + /** The unread portion of the currently read type is
1.629 + * signature[sigp..siglimit-1].
1.630 + */
1.631 + byte[] signature;
1.632 + int sigp;
1.633 + int siglimit;
1.634 + boolean sigEnterPhase = false;
1.635 +
1.636 + /** Convert signature to type, where signature is a byte array segment.
1.637 + */
1.638 + Type sigToType(byte[] sig, int offset, int len) {
1.639 + signature = sig;
1.640 + sigp = offset;
1.641 + siglimit = offset + len;
1.642 + return sigToType();
1.643 + }
1.644 +
1.645 + /** Convert signature to type, where signature is implicit.
1.646 + */
1.647 + Type sigToType() {
1.648 + switch ((char) signature[sigp]) {
1.649 + case 'T':
1.650 + sigp++;
1.651 + int start = sigp;
1.652 + while (signature[sigp] != ';') sigp++;
1.653 + sigp++;
1.654 + return sigEnterPhase
1.655 + ? Type.noType
1.656 + : findTypeVar(names.fromUtf(signature, start, sigp - 1 - start));
1.657 + case '+': {
1.658 + sigp++;
1.659 + Type t = sigToType();
1.660 + return new WildcardType(t, BoundKind.EXTENDS,
1.661 + syms.boundClass);
1.662 + }
1.663 + case '*':
1.664 + sigp++;
1.665 + return new WildcardType(syms.objectType, BoundKind.UNBOUND,
1.666 + syms.boundClass);
1.667 + case '-': {
1.668 + sigp++;
1.669 + Type t = sigToType();
1.670 + return new WildcardType(t, BoundKind.SUPER,
1.671 + syms.boundClass);
1.672 + }
1.673 + case 'B':
1.674 + sigp++;
1.675 + return syms.byteType;
1.676 + case 'C':
1.677 + sigp++;
1.678 + return syms.charType;
1.679 + case 'D':
1.680 + sigp++;
1.681 + return syms.doubleType;
1.682 + case 'F':
1.683 + sigp++;
1.684 + return syms.floatType;
1.685 + case 'I':
1.686 + sigp++;
1.687 + return syms.intType;
1.688 + case 'J':
1.689 + sigp++;
1.690 + return syms.longType;
1.691 + case 'L':
1.692 + {
1.693 + // int oldsigp = sigp;
1.694 + Type t = classSigToType();
1.695 + if (sigp < siglimit && signature[sigp] == '.')
1.696 + throw badClassFile("deprecated inner class signature syntax " +
1.697 + "(please recompile from source)");
1.698 + /*
1.699 + System.err.println(" decoded " +
1.700 + new String(signature, oldsigp, sigp-oldsigp) +
1.701 + " => " + t + " outer " + t.outer());
1.702 + */
1.703 + return t;
1.704 + }
1.705 + case 'S':
1.706 + sigp++;
1.707 + return syms.shortType;
1.708 + case 'V':
1.709 + sigp++;
1.710 + return syms.voidType;
1.711 + case 'Z':
1.712 + sigp++;
1.713 + return syms.booleanType;
1.714 + case '[':
1.715 + sigp++;
1.716 + return new ArrayType(sigToType(), syms.arrayClass);
1.717 + case '(':
1.718 + sigp++;
1.719 + List<Type> argtypes = sigToTypes(')');
1.720 + Type restype = sigToType();
1.721 + List<Type> thrown = List.nil();
1.722 + while (signature[sigp] == '^') {
1.723 + sigp++;
1.724 + thrown = thrown.prepend(sigToType());
1.725 + }
1.726 + // if there is a typevar in the throws clause we should state it.
1.727 + for (List<Type> l = thrown; l.nonEmpty(); l = l.tail) {
1.728 + if (l.head.hasTag(TYPEVAR)) {
1.729 + l.head.tsym.flags_field |= THROWS;
1.730 + }
1.731 + }
1.732 + return new MethodType(argtypes,
1.733 + restype,
1.734 + thrown.reverse(),
1.735 + syms.methodClass);
1.736 + case '<':
1.737 + typevars = typevars.dup(currentOwner);
1.738 + Type poly = new ForAll(sigToTypeParams(), sigToType());
1.739 + typevars = typevars.leave();
1.740 + return poly;
1.741 + default:
1.742 + throw badClassFile("bad.signature",
1.743 + Convert.utf2string(signature, sigp, 10));
1.744 + }
1.745 + }
1.746 +
1.747 + byte[] signatureBuffer = new byte[0];
1.748 + int sbp = 0;
1.749 + /** Convert class signature to type, where signature is implicit.
1.750 + */
1.751 + Type classSigToType() {
1.752 + if (signature[sigp] != 'L')
1.753 + throw badClassFile("bad.class.signature",
1.754 + Convert.utf2string(signature, sigp, 10));
1.755 + sigp++;
1.756 + Type outer = Type.noType;
1.757 + int startSbp = sbp;
1.758 +
1.759 + while (true) {
1.760 + final byte c = signature[sigp++];
1.761 + switch (c) {
1.762 +
1.763 + case ';': { // end
1.764 + ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
1.765 + startSbp,
1.766 + sbp - startSbp));
1.767 +
1.768 + try {
1.769 + return (outer == Type.noType) ?
1.770 + t.erasure(types) :
1.771 + new ClassType(outer, List.<Type>nil(), t);
1.772 + } finally {
1.773 + sbp = startSbp;
1.774 + }
1.775 + }
1.776 +
1.777 + case '<': // generic arguments
1.778 + ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
1.779 + startSbp,
1.780 + sbp - startSbp));
1.781 + outer = new ClassType(outer, sigToTypes('>'), t) {
1.782 + boolean completed = false;
1.783 + @Override
1.784 + public Type getEnclosingType() {
1.785 + if (!completed) {
1.786 + completed = true;
1.787 + tsym.complete();
1.788 + Type enclosingType = tsym.type.getEnclosingType();
1.789 + if (enclosingType != Type.noType) {
1.790 + List<Type> typeArgs =
1.791 + super.getEnclosingType().allparams();
1.792 + List<Type> typeParams =
1.793 + enclosingType.allparams();
1.794 + if (typeParams.length() != typeArgs.length()) {
1.795 + // no "rare" types
1.796 + super.setEnclosingType(types.erasure(enclosingType));
1.797 + } else {
1.798 + super.setEnclosingType(types.subst(enclosingType,
1.799 + typeParams,
1.800 + typeArgs));
1.801 + }
1.802 + } else {
1.803 + super.setEnclosingType(Type.noType);
1.804 + }
1.805 + }
1.806 + return super.getEnclosingType();
1.807 + }
1.808 + @Override
1.809 + public void setEnclosingType(Type outer) {
1.810 + throw new UnsupportedOperationException();
1.811 + }
1.812 + };
1.813 + switch (signature[sigp++]) {
1.814 + case ';':
1.815 + if (sigp < signature.length && signature[sigp] == '.') {
1.816 + // support old-style GJC signatures
1.817 + // The signature produced was
1.818 + // Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>;
1.819 + // rather than say
1.820 + // Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>;
1.821 + // so we skip past ".Lfoo/Outer$"
1.822 + sigp += (sbp - startSbp) + // "foo/Outer"
1.823 + 3; // ".L" and "$"
1.824 + signatureBuffer[sbp++] = (byte)'$';
1.825 + break;
1.826 + } else {
1.827 + sbp = startSbp;
1.828 + return outer;
1.829 + }
1.830 + case '.':
1.831 + signatureBuffer[sbp++] = (byte)'$';
1.832 + break;
1.833 + default:
1.834 + throw new AssertionError(signature[sigp-1]);
1.835 + }
1.836 + continue;
1.837 +
1.838 + case '.':
1.839 + //we have seen an enclosing non-generic class
1.840 + if (outer != Type.noType) {
1.841 + t = enterClass(names.fromUtf(signatureBuffer,
1.842 + startSbp,
1.843 + sbp - startSbp));
1.844 + outer = new ClassType(outer, List.<Type>nil(), t);
1.845 + }
1.846 + signatureBuffer[sbp++] = (byte)'$';
1.847 + continue;
1.848 + case '/':
1.849 + signatureBuffer[sbp++] = (byte)'.';
1.850 + continue;
1.851 + default:
1.852 + signatureBuffer[sbp++] = c;
1.853 + continue;
1.854 + }
1.855 + }
1.856 + }
1.857 +
1.858 + /** Convert (implicit) signature to list of types
1.859 + * until `terminator' is encountered.
1.860 + */
1.861 + List<Type> sigToTypes(char terminator) {
1.862 + List<Type> head = List.of(null);
1.863 + List<Type> tail = head;
1.864 + while (signature[sigp] != terminator)
1.865 + tail = tail.setTail(List.of(sigToType()));
1.866 + sigp++;
1.867 + return head.tail;
1.868 + }
1.869 +
1.870 + /** Convert signature to type parameters, where signature is a byte
1.871 + * array segment.
1.872 + */
1.873 + List<Type> sigToTypeParams(byte[] sig, int offset, int len) {
1.874 + signature = sig;
1.875 + sigp = offset;
1.876 + siglimit = offset + len;
1.877 + return sigToTypeParams();
1.878 + }
1.879 +
1.880 + /** Convert signature to type parameters, where signature is implicit.
1.881 + */
1.882 + List<Type> sigToTypeParams() {
1.883 + List<Type> tvars = List.nil();
1.884 + if (signature[sigp] == '<') {
1.885 + sigp++;
1.886 + int start = sigp;
1.887 + sigEnterPhase = true;
1.888 + while (signature[sigp] != '>')
1.889 + tvars = tvars.prepend(sigToTypeParam());
1.890 + sigEnterPhase = false;
1.891 + sigp = start;
1.892 + while (signature[sigp] != '>')
1.893 + sigToTypeParam();
1.894 + sigp++;
1.895 + }
1.896 + return tvars.reverse();
1.897 + }
1.898 +
1.899 + /** Convert (implicit) signature to type parameter.
1.900 + */
1.901 + Type sigToTypeParam() {
1.902 + int start = sigp;
1.903 + while (signature[sigp] != ':') sigp++;
1.904 + Name name = names.fromUtf(signature, start, sigp - start);
1.905 + TypeVar tvar;
1.906 + if (sigEnterPhase) {
1.907 + tvar = new TypeVar(name, currentOwner, syms.botType);
1.908 + typevars.enter(tvar.tsym);
1.909 + } else {
1.910 + tvar = (TypeVar)findTypeVar(name);
1.911 + }
1.912 + List<Type> bounds = List.nil();
1.913 + boolean allInterfaces = false;
1.914 + if (signature[sigp] == ':' && signature[sigp+1] == ':') {
1.915 + sigp++;
1.916 + allInterfaces = true;
1.917 + }
1.918 + while (signature[sigp] == ':') {
1.919 + sigp++;
1.920 + bounds = bounds.prepend(sigToType());
1.921 + }
1.922 + if (!sigEnterPhase) {
1.923 + types.setBounds(tvar, bounds.reverse(), allInterfaces);
1.924 + }
1.925 + return tvar;
1.926 + }
1.927 +
1.928 + /** Find type variable with given name in `typevars' scope.
1.929 + */
1.930 + Type findTypeVar(Name name) {
1.931 + Scope.Entry e = typevars.lookup(name);
1.932 + if (e.scope != null) {
1.933 + return e.sym.type;
1.934 + } else {
1.935 + if (readingClassAttr) {
1.936 + // While reading the class attribute, the supertypes
1.937 + // might refer to a type variable from an enclosing element
1.938 + // (method or class).
1.939 + // If the type variable is defined in the enclosing class,
1.940 + // we can actually find it in
1.941 + // currentOwner.owner.type.getTypeArguments()
1.942 + // However, until we have read the enclosing method attribute
1.943 + // we don't know for sure if this owner is correct. It could
1.944 + // be a method and there is no way to tell before reading the
1.945 + // enclosing method attribute.
1.946 + TypeVar t = new TypeVar(name, currentOwner, syms.botType);
1.947 + missingTypeVariables = missingTypeVariables.prepend(t);
1.948 + // System.err.println("Missing type var " + name);
1.949 + return t;
1.950 + }
1.951 + throw badClassFile("undecl.type.var", name);
1.952 + }
1.953 + }
1.954 +
1.955 +/************************************************************************
1.956 + * Reading Attributes
1.957 + ***********************************************************************/
1.958 +
1.959 + protected enum AttributeKind { CLASS, MEMBER };
1.960 + protected abstract class AttributeReader {
1.961 + protected AttributeReader(Name name, ClassFile.Version version, Set<AttributeKind> kinds) {
1.962 + this.name = name;
1.963 + this.version = version;
1.964 + this.kinds = kinds;
1.965 + }
1.966 +
1.967 + protected boolean accepts(AttributeKind kind) {
1.968 + if (kinds.contains(kind)) {
1.969 + if (majorVersion > version.major || (majorVersion == version.major && minorVersion >= version.minor))
1.970 + return true;
1.971 +
1.972 + if (lintClassfile && !warnedAttrs.contains(name)) {
1.973 + JavaFileObject prev = log.useSource(currentClassFile);
1.974 + try {
1.975 + log.warning(LintCategory.CLASSFILE, (DiagnosticPosition) null, "future.attr",
1.976 + name, version.major, version.minor, majorVersion, minorVersion);
1.977 + } finally {
1.978 + log.useSource(prev);
1.979 + }
1.980 + warnedAttrs.add(name);
1.981 + }
1.982 + }
1.983 + return false;
1.984 + }
1.985 +
1.986 + protected abstract void read(Symbol sym, int attrLen);
1.987 +
1.988 + protected final Name name;
1.989 + protected final ClassFile.Version version;
1.990 + protected final Set<AttributeKind> kinds;
1.991 + }
1.992 +
1.993 + protected Set<AttributeKind> CLASS_ATTRIBUTE =
1.994 + EnumSet.of(AttributeKind.CLASS);
1.995 + protected Set<AttributeKind> MEMBER_ATTRIBUTE =
1.996 + EnumSet.of(AttributeKind.MEMBER);
1.997 + protected Set<AttributeKind> CLASS_OR_MEMBER_ATTRIBUTE =
1.998 + EnumSet.of(AttributeKind.CLASS, AttributeKind.MEMBER);
1.999 +
1.1000 + protected Map<Name, AttributeReader> attributeReaders = new HashMap<Name, AttributeReader>();
1.1001 +
1.1002 + private void initAttributeReaders() {
1.1003 + AttributeReader[] readers = {
1.1004 + // v45.3 attributes
1.1005 +
1.1006 + new AttributeReader(names.Code, V45_3, MEMBER_ATTRIBUTE) {
1.1007 + protected void read(Symbol sym, int attrLen) {
1.1008 + if (readAllOfClassFile || saveParameterNames)
1.1009 + ((MethodSymbol)sym).code = readCode(sym);
1.1010 + else
1.1011 + bp = bp + attrLen;
1.1012 + }
1.1013 + },
1.1014 +
1.1015 + new AttributeReader(names.ConstantValue, V45_3, MEMBER_ATTRIBUTE) {
1.1016 + protected void read(Symbol sym, int attrLen) {
1.1017 + Object v = readPool(nextChar());
1.1018 + // Ignore ConstantValue attribute if field not final.
1.1019 + if ((sym.flags() & FINAL) != 0)
1.1020 + ((VarSymbol) sym).setData(v);
1.1021 + }
1.1022 + },
1.1023 +
1.1024 + new AttributeReader(names.Deprecated, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1025 + protected void read(Symbol sym, int attrLen) {
1.1026 + sym.flags_field |= DEPRECATED;
1.1027 + }
1.1028 + },
1.1029 +
1.1030 + new AttributeReader(names.Exceptions, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1031 + protected void read(Symbol sym, int attrLen) {
1.1032 + int nexceptions = nextChar();
1.1033 + List<Type> thrown = List.nil();
1.1034 + for (int j = 0; j < nexceptions; j++)
1.1035 + thrown = thrown.prepend(readClassSymbol(nextChar()).type);
1.1036 + if (sym.type.getThrownTypes().isEmpty())
1.1037 + sym.type.asMethodType().thrown = thrown.reverse();
1.1038 + }
1.1039 + },
1.1040 +
1.1041 + new AttributeReader(names.InnerClasses, V45_3, CLASS_ATTRIBUTE) {
1.1042 + protected void read(Symbol sym, int attrLen) {
1.1043 + ClassSymbol c = (ClassSymbol) sym;
1.1044 + readInnerClasses(c);
1.1045 + }
1.1046 + },
1.1047 +
1.1048 + new AttributeReader(names.LocalVariableTable, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1049 + protected void read(Symbol sym, int attrLen) {
1.1050 + int newbp = bp + attrLen;
1.1051 + if (saveParameterNames && !sawMethodParameters) {
1.1052 + // Pick up parameter names from the variable table.
1.1053 + // Parameter names are not explicitly identified as such,
1.1054 + // but all parameter name entries in the LocalVariableTable
1.1055 + // have a start_pc of 0. Therefore, we record the name
1.1056 + // indicies of all slots with a start_pc of zero in the
1.1057 + // parameterNameIndicies array.
1.1058 + // Note that this implicitly honors the JVMS spec that
1.1059 + // there may be more than one LocalVariableTable, and that
1.1060 + // there is no specified ordering for the entries.
1.1061 + int numEntries = nextChar();
1.1062 + for (int i = 0; i < numEntries; i++) {
1.1063 + int start_pc = nextChar();
1.1064 + int length = nextChar();
1.1065 + int nameIndex = nextChar();
1.1066 + int sigIndex = nextChar();
1.1067 + int register = nextChar();
1.1068 + if (start_pc == 0) {
1.1069 + // ensure array large enough
1.1070 + if (register >= parameterNameIndices.length) {
1.1071 + int newSize = Math.max(register, parameterNameIndices.length + 8);
1.1072 + parameterNameIndices =
1.1073 + Arrays.copyOf(parameterNameIndices, newSize);
1.1074 + }
1.1075 + parameterNameIndices[register] = nameIndex;
1.1076 + haveParameterNameIndices = true;
1.1077 + }
1.1078 + }
1.1079 + }
1.1080 + bp = newbp;
1.1081 + }
1.1082 + },
1.1083 +
1.1084 + new AttributeReader(names.MethodParameters, V52, MEMBER_ATTRIBUTE) {
1.1085 + protected void read(Symbol sym, int attrlen) {
1.1086 + int newbp = bp + attrlen;
1.1087 + if (saveParameterNames) {
1.1088 + sawMethodParameters = true;
1.1089 + int numEntries = nextByte();
1.1090 + parameterNameIndices = new int[numEntries];
1.1091 + haveParameterNameIndices = true;
1.1092 + for (int i = 0; i < numEntries; i++) {
1.1093 + int nameIndex = nextChar();
1.1094 + int flags = nextChar();
1.1095 + parameterNameIndices[i] = nameIndex;
1.1096 + }
1.1097 + }
1.1098 + bp = newbp;
1.1099 + }
1.1100 + },
1.1101 +
1.1102 +
1.1103 + new AttributeReader(names.SourceFile, V45_3, CLASS_ATTRIBUTE) {
1.1104 + protected void read(Symbol sym, int attrLen) {
1.1105 + ClassSymbol c = (ClassSymbol) sym;
1.1106 + Name n = readName(nextChar());
1.1107 + c.sourcefile = new SourceFileObject(n, c.flatname);
1.1108 + // If the class is a toplevel class, originating from a Java source file,
1.1109 + // but the class name does not match the file name, then it is
1.1110 + // an auxiliary class.
1.1111 + String sn = n.toString();
1.1112 + if (c.owner.kind == Kinds.PCK &&
1.1113 + sn.endsWith(".java") &&
1.1114 + !sn.equals(c.name.toString()+".java")) {
1.1115 + c.flags_field |= AUXILIARY;
1.1116 + }
1.1117 + }
1.1118 + },
1.1119 +
1.1120 + new AttributeReader(names.Synthetic, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1121 + protected void read(Symbol sym, int attrLen) {
1.1122 + // bridge methods are visible when generics not enabled
1.1123 + if (allowGenerics || (sym.flags_field & BRIDGE) == 0)
1.1124 + sym.flags_field |= SYNTHETIC;
1.1125 + }
1.1126 + },
1.1127 +
1.1128 + // standard v49 attributes
1.1129 +
1.1130 + new AttributeReader(names.EnclosingMethod, V49, CLASS_ATTRIBUTE) {
1.1131 + protected void read(Symbol sym, int attrLen) {
1.1132 + int newbp = bp + attrLen;
1.1133 + readEnclosingMethodAttr(sym);
1.1134 + bp = newbp;
1.1135 + }
1.1136 + },
1.1137 +
1.1138 + new AttributeReader(names.Signature, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1139 + @Override
1.1140 + protected boolean accepts(AttributeKind kind) {
1.1141 + return super.accepts(kind) && allowGenerics;
1.1142 + }
1.1143 +
1.1144 + protected void read(Symbol sym, int attrLen) {
1.1145 + if (sym.kind == TYP) {
1.1146 + ClassSymbol c = (ClassSymbol) sym;
1.1147 + readingClassAttr = true;
1.1148 + try {
1.1149 + ClassType ct1 = (ClassType)c.type;
1.1150 + Assert.check(c == currentOwner);
1.1151 + ct1.typarams_field = readTypeParams(nextChar());
1.1152 + ct1.supertype_field = sigToType();
1.1153 + ListBuffer<Type> is = new ListBuffer<Type>();
1.1154 + while (sigp != siglimit) is.append(sigToType());
1.1155 + ct1.interfaces_field = is.toList();
1.1156 + } finally {
1.1157 + readingClassAttr = false;
1.1158 + }
1.1159 + } else {
1.1160 + List<Type> thrown = sym.type.getThrownTypes();
1.1161 + sym.type = readType(nextChar());
1.1162 + //- System.err.println(" # " + sym.type);
1.1163 + if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty())
1.1164 + sym.type.asMethodType().thrown = thrown;
1.1165 +
1.1166 + }
1.1167 + }
1.1168 + },
1.1169 +
1.1170 + // v49 annotation attributes
1.1171 +
1.1172 + new AttributeReader(names.AnnotationDefault, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1173 + protected void read(Symbol sym, int attrLen) {
1.1174 + attachAnnotationDefault(sym);
1.1175 + }
1.1176 + },
1.1177 +
1.1178 + new AttributeReader(names.RuntimeInvisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1179 + protected void read(Symbol sym, int attrLen) {
1.1180 + attachAnnotations(sym);
1.1181 + }
1.1182 + },
1.1183 +
1.1184 + new AttributeReader(names.RuntimeInvisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1185 + protected void read(Symbol sym, int attrLen) {
1.1186 + attachParameterAnnotations(sym);
1.1187 + }
1.1188 + },
1.1189 +
1.1190 + new AttributeReader(names.RuntimeVisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1191 + protected void read(Symbol sym, int attrLen) {
1.1192 + attachAnnotations(sym);
1.1193 + }
1.1194 + },
1.1195 +
1.1196 + new AttributeReader(names.RuntimeVisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1197 + protected void read(Symbol sym, int attrLen) {
1.1198 + attachParameterAnnotations(sym);
1.1199 + }
1.1200 + },
1.1201 +
1.1202 + // additional "legacy" v49 attributes, superceded by flags
1.1203 +
1.1204 + new AttributeReader(names.Annotation, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1205 + protected void read(Symbol sym, int attrLen) {
1.1206 + if (allowAnnotations)
1.1207 + sym.flags_field |= ANNOTATION;
1.1208 + }
1.1209 + },
1.1210 +
1.1211 + new AttributeReader(names.Bridge, V49, MEMBER_ATTRIBUTE) {
1.1212 + protected void read(Symbol sym, int attrLen) {
1.1213 + sym.flags_field |= BRIDGE;
1.1214 + if (!allowGenerics)
1.1215 + sym.flags_field &= ~SYNTHETIC;
1.1216 + }
1.1217 + },
1.1218 +
1.1219 + new AttributeReader(names.Enum, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1220 + protected void read(Symbol sym, int attrLen) {
1.1221 + sym.flags_field |= ENUM;
1.1222 + }
1.1223 + },
1.1224 +
1.1225 + new AttributeReader(names.Varargs, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1226 + protected void read(Symbol sym, int attrLen) {
1.1227 + if (allowVarargs)
1.1228 + sym.flags_field |= VARARGS;
1.1229 + }
1.1230 + },
1.1231 +
1.1232 + new AttributeReader(names.RuntimeVisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1233 + protected void read(Symbol sym, int attrLen) {
1.1234 + attachTypeAnnotations(sym);
1.1235 + }
1.1236 + },
1.1237 +
1.1238 + new AttributeReader(names.RuntimeInvisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
1.1239 + protected void read(Symbol sym, int attrLen) {
1.1240 + attachTypeAnnotations(sym);
1.1241 + }
1.1242 + },
1.1243 +
1.1244 +
1.1245 + // The following attributes for a Code attribute are not currently handled
1.1246 + // StackMapTable
1.1247 + // SourceDebugExtension
1.1248 + // LineNumberTable
1.1249 + // LocalVariableTypeTable
1.1250 + };
1.1251 +
1.1252 + for (AttributeReader r: readers)
1.1253 + attributeReaders.put(r.name, r);
1.1254 + }
1.1255 +
1.1256 + /** Report unrecognized attribute.
1.1257 + */
1.1258 + void unrecognized(Name attrName) {
1.1259 + if (checkClassFile)
1.1260 + printCCF("ccf.unrecognized.attribute", attrName);
1.1261 + }
1.1262 +
1.1263 +
1.1264 +
1.1265 + protected void readEnclosingMethodAttr(Symbol sym) {
1.1266 + // sym is a nested class with an "Enclosing Method" attribute
1.1267 + // remove sym from it's current owners scope and place it in
1.1268 + // the scope specified by the attribute
1.1269 + sym.owner.members().remove(sym);
1.1270 + ClassSymbol self = (ClassSymbol)sym;
1.1271 + ClassSymbol c = readClassSymbol(nextChar());
1.1272 + NameAndType nt = readNameAndType(nextChar());
1.1273 +
1.1274 + if (c.members_field == null)
1.1275 + throw badClassFile("bad.enclosing.class", self, c);
1.1276 +
1.1277 + MethodSymbol m = findMethod(nt, c.members_field, self.flags());
1.1278 + if (nt != null && m == null)
1.1279 + throw badClassFile("bad.enclosing.method", self);
1.1280 +
1.1281 + self.name = simpleBinaryName(self.flatname, c.flatname) ;
1.1282 + self.owner = m != null ? m : c;
1.1283 + if (self.name.isEmpty())
1.1284 + self.fullname = names.empty;
1.1285 + else
1.1286 + self.fullname = ClassSymbol.formFullName(self.name, self.owner);
1.1287 +
1.1288 + if (m != null) {
1.1289 + ((ClassType)sym.type).setEnclosingType(m.type);
1.1290 + } else if ((self.flags_field & STATIC) == 0) {
1.1291 + ((ClassType)sym.type).setEnclosingType(c.type);
1.1292 + } else {
1.1293 + ((ClassType)sym.type).setEnclosingType(Type.noType);
1.1294 + }
1.1295 + enterTypevars(self);
1.1296 + if (!missingTypeVariables.isEmpty()) {
1.1297 + ListBuffer<Type> typeVars = new ListBuffer<Type>();
1.1298 + for (Type typevar : missingTypeVariables) {
1.1299 + typeVars.append(findTypeVar(typevar.tsym.name));
1.1300 + }
1.1301 + foundTypeVariables = typeVars.toList();
1.1302 + } else {
1.1303 + foundTypeVariables = List.nil();
1.1304 + }
1.1305 + }
1.1306 +
1.1307 + // See java.lang.Class
1.1308 + private Name simpleBinaryName(Name self, Name enclosing) {
1.1309 + String simpleBinaryName = self.toString().substring(enclosing.toString().length());
1.1310 + if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$')
1.1311 + throw badClassFile("bad.enclosing.method", self);
1.1312 + int index = 1;
1.1313 + while (index < simpleBinaryName.length() &&
1.1314 + isAsciiDigit(simpleBinaryName.charAt(index)))
1.1315 + index++;
1.1316 + return names.fromString(simpleBinaryName.substring(index));
1.1317 + }
1.1318 +
1.1319 + private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) {
1.1320 + if (nt == null)
1.1321 + return null;
1.1322 +
1.1323 + MethodType type = nt.uniqueType.type.asMethodType();
1.1324 +
1.1325 + for (Scope.Entry e = scope.lookup(nt.name); e.scope != null; e = e.next())
1.1326 + if (e.sym.kind == MTH && isSameBinaryType(e.sym.type.asMethodType(), type))
1.1327 + return (MethodSymbol)e.sym;
1.1328 +
1.1329 + if (nt.name != names.init)
1.1330 + // not a constructor
1.1331 + return null;
1.1332 + if ((flags & INTERFACE) != 0)
1.1333 + // no enclosing instance
1.1334 + return null;
1.1335 + if (nt.uniqueType.type.getParameterTypes().isEmpty())
1.1336 + // no parameters
1.1337 + return null;
1.1338 +
1.1339 + // A constructor of an inner class.
1.1340 + // Remove the first argument (the enclosing instance)
1.1341 + nt.setType(new MethodType(nt.uniqueType.type.getParameterTypes().tail,
1.1342 + nt.uniqueType.type.getReturnType(),
1.1343 + nt.uniqueType.type.getThrownTypes(),
1.1344 + syms.methodClass));
1.1345 + // Try searching again
1.1346 + return findMethod(nt, scope, flags);
1.1347 + }
1.1348 +
1.1349 + /** Similar to Types.isSameType but avoids completion */
1.1350 + private boolean isSameBinaryType(MethodType mt1, MethodType mt2) {
1.1351 + List<Type> types1 = types.erasure(mt1.getParameterTypes())
1.1352 + .prepend(types.erasure(mt1.getReturnType()));
1.1353 + List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType());
1.1354 + while (!types1.isEmpty() && !types2.isEmpty()) {
1.1355 + if (types1.head.tsym != types2.head.tsym)
1.1356 + return false;
1.1357 + types1 = types1.tail;
1.1358 + types2 = types2.tail;
1.1359 + }
1.1360 + return types1.isEmpty() && types2.isEmpty();
1.1361 + }
1.1362 +
1.1363 + /**
1.1364 + * Character.isDigit answers <tt>true</tt> to some non-ascii
1.1365 + * digits. This one does not. <b>copied from java.lang.Class</b>
1.1366 + */
1.1367 + private static boolean isAsciiDigit(char c) {
1.1368 + return '0' <= c && c <= '9';
1.1369 + }
1.1370 +
1.1371 + /** Read member attributes.
1.1372 + */
1.1373 + void readMemberAttrs(Symbol sym) {
1.1374 + readAttrs(sym, AttributeKind.MEMBER);
1.1375 + }
1.1376 +
1.1377 + void readAttrs(Symbol sym, AttributeKind kind) {
1.1378 + char ac = nextChar();
1.1379 + for (int i = 0; i < ac; i++) {
1.1380 + Name attrName = readName(nextChar());
1.1381 + int attrLen = nextInt();
1.1382 + AttributeReader r = attributeReaders.get(attrName);
1.1383 + if (r != null && r.accepts(kind))
1.1384 + r.read(sym, attrLen);
1.1385 + else {
1.1386 + unrecognized(attrName);
1.1387 + bp = bp + attrLen;
1.1388 + }
1.1389 + }
1.1390 + }
1.1391 +
1.1392 + private boolean readingClassAttr = false;
1.1393 + private List<Type> missingTypeVariables = List.nil();
1.1394 + private List<Type> foundTypeVariables = List.nil();
1.1395 +
1.1396 + /** Read class attributes.
1.1397 + */
1.1398 + void readClassAttrs(ClassSymbol c) {
1.1399 + readAttrs(c, AttributeKind.CLASS);
1.1400 + }
1.1401 +
1.1402 + /** Read code block.
1.1403 + */
1.1404 + Code readCode(Symbol owner) {
1.1405 + nextChar(); // max_stack
1.1406 + nextChar(); // max_locals
1.1407 + final int code_length = nextInt();
1.1408 + bp += code_length;
1.1409 + final char exception_table_length = nextChar();
1.1410 + bp += exception_table_length * 8;
1.1411 + readMemberAttrs(owner);
1.1412 + return null;
1.1413 + }
1.1414 +
1.1415 +/************************************************************************
1.1416 + * Reading Java-language annotations
1.1417 + ***********************************************************************/
1.1418 +
1.1419 + /** Attach annotations.
1.1420 + */
1.1421 + void attachAnnotations(final Symbol sym) {
1.1422 + int numAttributes = nextChar();
1.1423 + if (numAttributes != 0) {
1.1424 + ListBuffer<CompoundAnnotationProxy> proxies =
1.1425 + new ListBuffer<CompoundAnnotationProxy>();
1.1426 + for (int i = 0; i<numAttributes; i++) {
1.1427 + CompoundAnnotationProxy proxy = readCompoundAnnotation();
1.1428 + if (proxy.type.tsym == syms.proprietaryType.tsym)
1.1429 + sym.flags_field |= PROPRIETARY;
1.1430 + else if (proxy.type.tsym == syms.profileType.tsym) {
1.1431 + if (profile != Profile.DEFAULT) {
1.1432 + for (Pair<Name,Attribute> v: proxy.values) {
1.1433 + if (v.fst == names.value && v.snd instanceof Attribute.Constant) {
1.1434 + Attribute.Constant c = (Attribute.Constant) v.snd;
1.1435 + if (c.type == syms.intType && ((Integer) c.value) > profile.value) {
1.1436 + sym.flags_field |= NOT_IN_PROFILE;
1.1437 + }
1.1438 + }
1.1439 + }
1.1440 + }
1.1441 + } else
1.1442 + proxies.append(proxy);
1.1443 + }
1.1444 + annotate.normal(new AnnotationCompleter(sym, proxies.toList()));
1.1445 + }
1.1446 + }
1.1447 +
1.1448 + /** Attach parameter annotations.
1.1449 + */
1.1450 + void attachParameterAnnotations(final Symbol method) {
1.1451 + final MethodSymbol meth = (MethodSymbol)method;
1.1452 + int numParameters = buf[bp++] & 0xFF;
1.1453 + List<VarSymbol> parameters = meth.params();
1.1454 + int pnum = 0;
1.1455 + while (parameters.tail != null) {
1.1456 + attachAnnotations(parameters.head);
1.1457 + parameters = parameters.tail;
1.1458 + pnum++;
1.1459 + }
1.1460 + if (pnum != numParameters) {
1.1461 + throw badClassFile("bad.runtime.invisible.param.annotations", meth);
1.1462 + }
1.1463 + }
1.1464 +
1.1465 + void attachTypeAnnotations(final Symbol sym) {
1.1466 + int numAttributes = nextChar();
1.1467 + if (numAttributes != 0) {
1.1468 + ListBuffer<TypeAnnotationProxy> proxies = new ListBuffer<>();
1.1469 + for (int i = 0; i < numAttributes; i++)
1.1470 + proxies.append(readTypeAnnotation());
1.1471 + annotate.normal(new TypeAnnotationCompleter(sym, proxies.toList()));
1.1472 + }
1.1473 + }
1.1474 +
1.1475 + /** Attach the default value for an annotation element.
1.1476 + */
1.1477 + void attachAnnotationDefault(final Symbol sym) {
1.1478 + final MethodSymbol meth = (MethodSymbol)sym; // only on methods
1.1479 + final Attribute value = readAttributeValue();
1.1480 +
1.1481 + // The default value is set later during annotation. It might
1.1482 + // be the case that the Symbol sym is annotated _after_ the
1.1483 + // repeating instances that depend on this default value,
1.1484 + // because of this we set an interim value that tells us this
1.1485 + // element (most likely) has a default.
1.1486 + //
1.1487 + // Set interim value for now, reset just before we do this
1.1488 + // properly at annotate time.
1.1489 + meth.defaultValue = value;
1.1490 + annotate.normal(new AnnotationDefaultCompleter(meth, value));
1.1491 + }
1.1492 +
1.1493 + Type readTypeOrClassSymbol(int i) {
1.1494 + // support preliminary jsr175-format class files
1.1495 + if (buf[poolIdx[i]] == CONSTANT_Class)
1.1496 + return readClassSymbol(i).type;
1.1497 + return readType(i);
1.1498 + }
1.1499 + Type readEnumType(int i) {
1.1500 + // support preliminary jsr175-format class files
1.1501 + int index = poolIdx[i];
1.1502 + int length = getChar(index + 1);
1.1503 + if (buf[index + length + 2] != ';')
1.1504 + return enterClass(readName(i)).type;
1.1505 + return readType(i);
1.1506 + }
1.1507 +
1.1508 + CompoundAnnotationProxy readCompoundAnnotation() {
1.1509 + Type t = readTypeOrClassSymbol(nextChar());
1.1510 + int numFields = nextChar();
1.1511 + ListBuffer<Pair<Name,Attribute>> pairs =
1.1512 + new ListBuffer<Pair<Name,Attribute>>();
1.1513 + for (int i=0; i<numFields; i++) {
1.1514 + Name name = readName(nextChar());
1.1515 + Attribute value = readAttributeValue();
1.1516 + pairs.append(new Pair<Name,Attribute>(name, value));
1.1517 + }
1.1518 + return new CompoundAnnotationProxy(t, pairs.toList());
1.1519 + }
1.1520 +
1.1521 + TypeAnnotationProxy readTypeAnnotation() {
1.1522 + TypeAnnotationPosition position = readPosition();
1.1523 + CompoundAnnotationProxy proxy = readCompoundAnnotation();
1.1524 +
1.1525 + return new TypeAnnotationProxy(proxy, position);
1.1526 + }
1.1527 +
1.1528 + TypeAnnotationPosition readPosition() {
1.1529 + int tag = nextByte(); // TargetType tag is a byte
1.1530 +
1.1531 + if (!TargetType.isValidTargetTypeValue(tag))
1.1532 + throw this.badClassFile("bad.type.annotation.value", String.format("0x%02X", tag));
1.1533 +
1.1534 + TypeAnnotationPosition position = new TypeAnnotationPosition();
1.1535 + TargetType type = TargetType.fromTargetTypeValue(tag);
1.1536 +
1.1537 + position.type = type;
1.1538 +
1.1539 + switch (type) {
1.1540 + // instanceof
1.1541 + case INSTANCEOF:
1.1542 + // new expression
1.1543 + case NEW:
1.1544 + // constructor/method reference receiver
1.1545 + case CONSTRUCTOR_REFERENCE:
1.1546 + case METHOD_REFERENCE:
1.1547 + position.offset = nextChar();
1.1548 + break;
1.1549 + // local variable
1.1550 + case LOCAL_VARIABLE:
1.1551 + // resource variable
1.1552 + case RESOURCE_VARIABLE:
1.1553 + int table_length = nextChar();
1.1554 + position.lvarOffset = new int[table_length];
1.1555 + position.lvarLength = new int[table_length];
1.1556 + position.lvarIndex = new int[table_length];
1.1557 +
1.1558 + for (int i = 0; i < table_length; ++i) {
1.1559 + position.lvarOffset[i] = nextChar();
1.1560 + position.lvarLength[i] = nextChar();
1.1561 + position.lvarIndex[i] = nextChar();
1.1562 + }
1.1563 + break;
1.1564 + // exception parameter
1.1565 + case EXCEPTION_PARAMETER:
1.1566 + position.exception_index = nextChar();
1.1567 + break;
1.1568 + // method receiver
1.1569 + case METHOD_RECEIVER:
1.1570 + // Do nothing
1.1571 + break;
1.1572 + // type parameter
1.1573 + case CLASS_TYPE_PARAMETER:
1.1574 + case METHOD_TYPE_PARAMETER:
1.1575 + position.parameter_index = nextByte();
1.1576 + break;
1.1577 + // type parameter bound
1.1578 + case CLASS_TYPE_PARAMETER_BOUND:
1.1579 + case METHOD_TYPE_PARAMETER_BOUND:
1.1580 + position.parameter_index = nextByte();
1.1581 + position.bound_index = nextByte();
1.1582 + break;
1.1583 + // class extends or implements clause
1.1584 + case CLASS_EXTENDS:
1.1585 + position.type_index = nextChar();
1.1586 + break;
1.1587 + // throws
1.1588 + case THROWS:
1.1589 + position.type_index = nextChar();
1.1590 + break;
1.1591 + // method parameter
1.1592 + case METHOD_FORMAL_PARAMETER:
1.1593 + position.parameter_index = nextByte();
1.1594 + break;
1.1595 + // type cast
1.1596 + case CAST:
1.1597 + // method/constructor/reference type argument
1.1598 + case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
1.1599 + case METHOD_INVOCATION_TYPE_ARGUMENT:
1.1600 + case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
1.1601 + case METHOD_REFERENCE_TYPE_ARGUMENT:
1.1602 + position.offset = nextChar();
1.1603 + position.type_index = nextByte();
1.1604 + break;
1.1605 + // We don't need to worry about these
1.1606 + case METHOD_RETURN:
1.1607 + case FIELD:
1.1608 + break;
1.1609 + case UNKNOWN:
1.1610 + throw new AssertionError("jvm.ClassReader: UNKNOWN target type should never occur!");
1.1611 + default:
1.1612 + throw new AssertionError("jvm.ClassReader: Unknown target type for position: " + position);
1.1613 + }
1.1614 +
1.1615 + { // See whether there is location info and read it
1.1616 + int len = nextByte();
1.1617 + ListBuffer<Integer> loc = new ListBuffer<>();
1.1618 + for (int i = 0; i < len * TypeAnnotationPosition.TypePathEntry.bytesPerEntry; ++i)
1.1619 + loc = loc.append(nextByte());
1.1620 + position.location = TypeAnnotationPosition.getTypePathFromBinary(loc.toList());
1.1621 + }
1.1622 +
1.1623 + return position;
1.1624 + }
1.1625 +
1.1626 + Attribute readAttributeValue() {
1.1627 + char c = (char) buf[bp++];
1.1628 + switch (c) {
1.1629 + case 'B':
1.1630 + return new Attribute.Constant(syms.byteType, readPool(nextChar()));
1.1631 + case 'C':
1.1632 + return new Attribute.Constant(syms.charType, readPool(nextChar()));
1.1633 + case 'D':
1.1634 + return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
1.1635 + case 'F':
1.1636 + return new Attribute.Constant(syms.floatType, readPool(nextChar()));
1.1637 + case 'I':
1.1638 + return new Attribute.Constant(syms.intType, readPool(nextChar()));
1.1639 + case 'J':
1.1640 + return new Attribute.Constant(syms.longType, readPool(nextChar()));
1.1641 + case 'S':
1.1642 + return new Attribute.Constant(syms.shortType, readPool(nextChar()));
1.1643 + case 'Z':
1.1644 + return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
1.1645 + case 's':
1.1646 + return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
1.1647 + case 'e':
1.1648 + return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
1.1649 + case 'c':
1.1650 + return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
1.1651 + case '[': {
1.1652 + int n = nextChar();
1.1653 + ListBuffer<Attribute> l = new ListBuffer<Attribute>();
1.1654 + for (int i=0; i<n; i++)
1.1655 + l.append(readAttributeValue());
1.1656 + return new ArrayAttributeProxy(l.toList());
1.1657 + }
1.1658 + case '@':
1.1659 + return readCompoundAnnotation();
1.1660 + default:
1.1661 + throw new AssertionError("unknown annotation tag '" + c + "'");
1.1662 + }
1.1663 + }
1.1664 +
1.1665 + interface ProxyVisitor extends Attribute.Visitor {
1.1666 + void visitEnumAttributeProxy(EnumAttributeProxy proxy);
1.1667 + void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
1.1668 + void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
1.1669 + }
1.1670 +
1.1671 + static class EnumAttributeProxy extends Attribute {
1.1672 + Type enumType;
1.1673 + Name enumerator;
1.1674 + public EnumAttributeProxy(Type enumType, Name enumerator) {
1.1675 + super(null);
1.1676 + this.enumType = enumType;
1.1677 + this.enumerator = enumerator;
1.1678 + }
1.1679 + public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
1.1680 + @Override
1.1681 + public String toString() {
1.1682 + return "/*proxy enum*/" + enumType + "." + enumerator;
1.1683 + }
1.1684 + }
1.1685 +
1.1686 + static class ArrayAttributeProxy extends Attribute {
1.1687 + List<Attribute> values;
1.1688 + ArrayAttributeProxy(List<Attribute> values) {
1.1689 + super(null);
1.1690 + this.values = values;
1.1691 + }
1.1692 + public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
1.1693 + @Override
1.1694 + public String toString() {
1.1695 + return "{" + values + "}";
1.1696 + }
1.1697 + }
1.1698 +
1.1699 + /** A temporary proxy representing a compound attribute.
1.1700 + */
1.1701 + static class CompoundAnnotationProxy extends Attribute {
1.1702 + final List<Pair<Name,Attribute>> values;
1.1703 + public CompoundAnnotationProxy(Type type,
1.1704 + List<Pair<Name,Attribute>> values) {
1.1705 + super(type);
1.1706 + this.values = values;
1.1707 + }
1.1708 + public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
1.1709 + @Override
1.1710 + public String toString() {
1.1711 + StringBuilder buf = new StringBuilder();
1.1712 + buf.append("@");
1.1713 + buf.append(type.tsym.getQualifiedName());
1.1714 + buf.append("/*proxy*/{");
1.1715 + boolean first = true;
1.1716 + for (List<Pair<Name,Attribute>> v = values;
1.1717 + v.nonEmpty(); v = v.tail) {
1.1718 + Pair<Name,Attribute> value = v.head;
1.1719 + if (!first) buf.append(",");
1.1720 + first = false;
1.1721 + buf.append(value.fst);
1.1722 + buf.append("=");
1.1723 + buf.append(value.snd);
1.1724 + }
1.1725 + buf.append("}");
1.1726 + return buf.toString();
1.1727 + }
1.1728 + }
1.1729 +
1.1730 + /** A temporary proxy representing a type annotation.
1.1731 + */
1.1732 + static class TypeAnnotationProxy {
1.1733 + final CompoundAnnotationProxy compound;
1.1734 + final TypeAnnotationPosition position;
1.1735 + public TypeAnnotationProxy(CompoundAnnotationProxy compound,
1.1736 + TypeAnnotationPosition position) {
1.1737 + this.compound = compound;
1.1738 + this.position = position;
1.1739 + }
1.1740 + }
1.1741 +
1.1742 + class AnnotationDeproxy implements ProxyVisitor {
1.1743 + private ClassSymbol requestingOwner = currentOwner.kind == MTH
1.1744 + ? currentOwner.enclClass() : (ClassSymbol)currentOwner;
1.1745 +
1.1746 + List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
1.1747 + // also must fill in types!!!!
1.1748 + ListBuffer<Attribute.Compound> buf =
1.1749 + new ListBuffer<Attribute.Compound>();
1.1750 + for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
1.1751 + buf.append(deproxyCompound(l.head));
1.1752 + }
1.1753 + return buf.toList();
1.1754 + }
1.1755 +
1.1756 + Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
1.1757 + ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf =
1.1758 + new ListBuffer<Pair<Symbol.MethodSymbol,Attribute>>();
1.1759 + for (List<Pair<Name,Attribute>> l = a.values;
1.1760 + l.nonEmpty();
1.1761 + l = l.tail) {
1.1762 + MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
1.1763 + buf.append(new Pair<Symbol.MethodSymbol,Attribute>
1.1764 + (meth, deproxy(meth.type.getReturnType(), l.head.snd)));
1.1765 + }
1.1766 + return new Attribute.Compound(a.type, buf.toList());
1.1767 + }
1.1768 +
1.1769 + MethodSymbol findAccessMethod(Type container, Name name) {
1.1770 + CompletionFailure failure = null;
1.1771 + try {
1.1772 + for (Scope.Entry e = container.tsym.members().lookup(name);
1.1773 + e.scope != null;
1.1774 + e = e.next()) {
1.1775 + Symbol sym = e.sym;
1.1776 + if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
1.1777 + return (MethodSymbol) sym;
1.1778 + }
1.1779 + } catch (CompletionFailure ex) {
1.1780 + failure = ex;
1.1781 + }
1.1782 + // The method wasn't found: emit a warning and recover
1.1783 + JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
1.1784 + try {
1.1785 + if (failure == null) {
1.1786 + log.warning("annotation.method.not.found",
1.1787 + container,
1.1788 + name);
1.1789 + } else {
1.1790 + log.warning("annotation.method.not.found.reason",
1.1791 + container,
1.1792 + name,
1.1793 + failure.getDetailValue());//diagnostic, if present
1.1794 + }
1.1795 + } finally {
1.1796 + log.useSource(prevSource);
1.1797 + }
1.1798 + // Construct a new method type and symbol. Use bottom
1.1799 + // type (typeof null) as return type because this type is
1.1800 + // a subtype of all reference types and can be converted
1.1801 + // to primitive types by unboxing.
1.1802 + MethodType mt = new MethodType(List.<Type>nil(),
1.1803 + syms.botType,
1.1804 + List.<Type>nil(),
1.1805 + syms.methodClass);
1.1806 + return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
1.1807 + }
1.1808 +
1.1809 + Attribute result;
1.1810 + Type type;
1.1811 + Attribute deproxy(Type t, Attribute a) {
1.1812 + Type oldType = type;
1.1813 + try {
1.1814 + type = t;
1.1815 + a.accept(this);
1.1816 + return result;
1.1817 + } finally {
1.1818 + type = oldType;
1.1819 + }
1.1820 + }
1.1821 +
1.1822 + // implement Attribute.Visitor below
1.1823 +
1.1824 + public void visitConstant(Attribute.Constant value) {
1.1825 + // assert value.type == type;
1.1826 + result = value;
1.1827 + }
1.1828 +
1.1829 + public void visitClass(Attribute.Class clazz) {
1.1830 + result = clazz;
1.1831 + }
1.1832 +
1.1833 + public void visitEnum(Attribute.Enum e) {
1.1834 + throw new AssertionError(); // shouldn't happen
1.1835 + }
1.1836 +
1.1837 + public void visitCompound(Attribute.Compound compound) {
1.1838 + throw new AssertionError(); // shouldn't happen
1.1839 + }
1.1840 +
1.1841 + public void visitArray(Attribute.Array array) {
1.1842 + throw new AssertionError(); // shouldn't happen
1.1843 + }
1.1844 +
1.1845 + public void visitError(Attribute.Error e) {
1.1846 + throw new AssertionError(); // shouldn't happen
1.1847 + }
1.1848 +
1.1849 + public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
1.1850 + // type.tsym.flatName() should == proxy.enumFlatName
1.1851 + TypeSymbol enumTypeSym = proxy.enumType.tsym;
1.1852 + VarSymbol enumerator = null;
1.1853 + CompletionFailure failure = null;
1.1854 + try {
1.1855 + for (Scope.Entry e = enumTypeSym.members().lookup(proxy.enumerator);
1.1856 + e.scope != null;
1.1857 + e = e.next()) {
1.1858 + if (e.sym.kind == VAR) {
1.1859 + enumerator = (VarSymbol)e.sym;
1.1860 + break;
1.1861 + }
1.1862 + }
1.1863 + }
1.1864 + catch (CompletionFailure ex) {
1.1865 + failure = ex;
1.1866 + }
1.1867 + if (enumerator == null) {
1.1868 + if (failure != null) {
1.1869 + log.warning("unknown.enum.constant.reason",
1.1870 + currentClassFile, enumTypeSym, proxy.enumerator,
1.1871 + failure.getDiagnostic());
1.1872 + } else {
1.1873 + log.warning("unknown.enum.constant",
1.1874 + currentClassFile, enumTypeSym, proxy.enumerator);
1.1875 + }
1.1876 + result = new Attribute.Enum(enumTypeSym.type,
1.1877 + new VarSymbol(0, proxy.enumerator, syms.botType, enumTypeSym));
1.1878 + } else {
1.1879 + result = new Attribute.Enum(enumTypeSym.type, enumerator);
1.1880 + }
1.1881 + }
1.1882 +
1.1883 + public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
1.1884 + int length = proxy.values.length();
1.1885 + Attribute[] ats = new Attribute[length];
1.1886 + Type elemtype = types.elemtype(type);
1.1887 + int i = 0;
1.1888 + for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
1.1889 + ats[i++] = deproxy(elemtype, p.head);
1.1890 + }
1.1891 + result = new Attribute.Array(type, ats);
1.1892 + }
1.1893 +
1.1894 + public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
1.1895 + result = deproxyCompound(proxy);
1.1896 + }
1.1897 + }
1.1898 +
1.1899 + class AnnotationDefaultCompleter extends AnnotationDeproxy implements Annotate.Worker {
1.1900 + final MethodSymbol sym;
1.1901 + final Attribute value;
1.1902 + final JavaFileObject classFile = currentClassFile;
1.1903 + @Override
1.1904 + public String toString() {
1.1905 + return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
1.1906 + }
1.1907 + AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
1.1908 + this.sym = sym;
1.1909 + this.value = value;
1.1910 + }
1.1911 + // implement Annotate.Worker.run()
1.1912 + public void run() {
1.1913 + JavaFileObject previousClassFile = currentClassFile;
1.1914 + try {
1.1915 + // Reset the interim value set earlier in
1.1916 + // attachAnnotationDefault().
1.1917 + sym.defaultValue = null;
1.1918 + currentClassFile = classFile;
1.1919 + sym.defaultValue = deproxy(sym.type.getReturnType(), value);
1.1920 + } finally {
1.1921 + currentClassFile = previousClassFile;
1.1922 + }
1.1923 + }
1.1924 + }
1.1925 +
1.1926 + class AnnotationCompleter extends AnnotationDeproxy implements Annotate.Worker {
1.1927 + final Symbol sym;
1.1928 + final List<CompoundAnnotationProxy> l;
1.1929 + final JavaFileObject classFile;
1.1930 + @Override
1.1931 + public String toString() {
1.1932 + return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
1.1933 + }
1.1934 + AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
1.1935 + this.sym = sym;
1.1936 + this.l = l;
1.1937 + this.classFile = currentClassFile;
1.1938 + }
1.1939 + // implement Annotate.Worker.run()
1.1940 + public void run() {
1.1941 + JavaFileObject previousClassFile = currentClassFile;
1.1942 + try {
1.1943 + currentClassFile = classFile;
1.1944 + List<Attribute.Compound> newList = deproxyCompoundList(l);
1.1945 + if (sym.annotationsPendingCompletion()) {
1.1946 + sym.setDeclarationAttributes(newList);
1.1947 + } else {
1.1948 + sym.appendAttributes(newList);
1.1949 + }
1.1950 + } finally {
1.1951 + currentClassFile = previousClassFile;
1.1952 + }
1.1953 + }
1.1954 + }
1.1955 +
1.1956 + class TypeAnnotationCompleter extends AnnotationCompleter {
1.1957 +
1.1958 + List<TypeAnnotationProxy> proxies;
1.1959 +
1.1960 + TypeAnnotationCompleter(Symbol sym,
1.1961 + List<TypeAnnotationProxy> proxies) {
1.1962 + super(sym, List.<CompoundAnnotationProxy>nil());
1.1963 + this.proxies = proxies;
1.1964 + }
1.1965 +
1.1966 + List<Attribute.TypeCompound> deproxyTypeCompoundList(List<TypeAnnotationProxy> proxies) {
1.1967 + ListBuffer<Attribute.TypeCompound> buf = new ListBuffer<>();
1.1968 + for (TypeAnnotationProxy proxy: proxies) {
1.1969 + Attribute.Compound compound = deproxyCompound(proxy.compound);
1.1970 + Attribute.TypeCompound typeCompound = new Attribute.TypeCompound(compound, proxy.position);
1.1971 + buf.add(typeCompound);
1.1972 + }
1.1973 + return buf.toList();
1.1974 + }
1.1975 +
1.1976 + @Override
1.1977 + public void run() {
1.1978 + JavaFileObject previousClassFile = currentClassFile;
1.1979 + try {
1.1980 + currentClassFile = classFile;
1.1981 + List<Attribute.TypeCompound> newList = deproxyTypeCompoundList(proxies);
1.1982 + sym.setTypeAttributes(newList.prependList(sym.getRawTypeAttributes()));
1.1983 + } finally {
1.1984 + currentClassFile = previousClassFile;
1.1985 + }
1.1986 + }
1.1987 + }
1.1988 +
1.1989 +
1.1990 +/************************************************************************
1.1991 + * Reading Symbols
1.1992 + ***********************************************************************/
1.1993 +
1.1994 + /** Read a field.
1.1995 + */
1.1996 + VarSymbol readField() {
1.1997 + long flags = adjustFieldFlags(nextChar());
1.1998 + Name name = readName(nextChar());
1.1999 + Type type = readType(nextChar());
1.2000 + VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
1.2001 + readMemberAttrs(v);
1.2002 + return v;
1.2003 + }
1.2004 +
1.2005 + /** Read a method.
1.2006 + */
1.2007 + MethodSymbol readMethod() {
1.2008 + long flags = adjustMethodFlags(nextChar());
1.2009 + Name name = readName(nextChar());
1.2010 + Type type = readType(nextChar());
1.2011 + if (currentOwner.isInterface() &&
1.2012 + (flags & ABSTRACT) == 0 && !name.equals(names.clinit)) {
1.2013 + if (majorVersion > Target.JDK1_8.majorVersion ||
1.2014 + (majorVersion == Target.JDK1_8.majorVersion && minorVersion >= Target.JDK1_8.minorVersion)) {
1.2015 + if ((flags & STATIC) == 0) {
1.2016 + currentOwner.flags_field |= DEFAULT;
1.2017 + flags |= DEFAULT | ABSTRACT;
1.2018 + }
1.2019 + } else {
1.2020 + //protect against ill-formed classfiles
1.2021 + throw badClassFile((flags & STATIC) == 0 ? "invalid.default.interface" : "invalid.static.interface",
1.2022 + Integer.toString(majorVersion),
1.2023 + Integer.toString(minorVersion));
1.2024 + }
1.2025 + }
1.2026 + if (name == names.init && currentOwner.hasOuterInstance()) {
1.2027 + // Sometimes anonymous classes don't have an outer
1.2028 + // instance, however, there is no reliable way to tell so
1.2029 + // we never strip this$n
1.2030 + if (!currentOwner.name.isEmpty())
1.2031 + type = new MethodType(adjustMethodParams(flags, type.getParameterTypes()),
1.2032 + type.getReturnType(),
1.2033 + type.getThrownTypes(),
1.2034 + syms.methodClass);
1.2035 + }
1.2036 + MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
1.2037 + if (types.isSignaturePolymorphic(m)) {
1.2038 + m.flags_field |= SIGNATURE_POLYMORPHIC;
1.2039 + }
1.2040 + if (saveParameterNames)
1.2041 + initParameterNames(m);
1.2042 + Symbol prevOwner = currentOwner;
1.2043 + currentOwner = m;
1.2044 + try {
1.2045 + readMemberAttrs(m);
1.2046 + } finally {
1.2047 + currentOwner = prevOwner;
1.2048 + }
1.2049 + if (saveParameterNames)
1.2050 + setParameterNames(m, type);
1.2051 + return m;
1.2052 + }
1.2053 +
1.2054 + private List<Type> adjustMethodParams(long flags, List<Type> args) {
1.2055 + boolean isVarargs = (flags & VARARGS) != 0;
1.2056 + if (isVarargs) {
1.2057 + Type varargsElem = args.last();
1.2058 + ListBuffer<Type> adjustedArgs = new ListBuffer<>();
1.2059 + for (Type t : args) {
1.2060 + adjustedArgs.append(t != varargsElem ?
1.2061 + t :
1.2062 + ((ArrayType)t).makeVarargs());
1.2063 + }
1.2064 + args = adjustedArgs.toList();
1.2065 + }
1.2066 + return args.tail;
1.2067 + }
1.2068 +
1.2069 + /**
1.2070 + * Init the parameter names array.
1.2071 + * Parameter names are currently inferred from the names in the
1.2072 + * LocalVariableTable attributes of a Code attribute.
1.2073 + * (Note: this means parameter names are currently not available for
1.2074 + * methods without a Code attribute.)
1.2075 + * This method initializes an array in which to store the name indexes
1.2076 + * of parameter names found in LocalVariableTable attributes. It is
1.2077 + * slightly supersized to allow for additional slots with a start_pc of 0.
1.2078 + */
1.2079 + void initParameterNames(MethodSymbol sym) {
1.2080 + // make allowance for synthetic parameters.
1.2081 + final int excessSlots = 4;
1.2082 + int expectedParameterSlots =
1.2083 + Code.width(sym.type.getParameterTypes()) + excessSlots;
1.2084 + if (parameterNameIndices == null
1.2085 + || parameterNameIndices.length < expectedParameterSlots) {
1.2086 + parameterNameIndices = new int[expectedParameterSlots];
1.2087 + } else
1.2088 + Arrays.fill(parameterNameIndices, 0);
1.2089 + haveParameterNameIndices = false;
1.2090 + sawMethodParameters = false;
1.2091 + }
1.2092 +
1.2093 + /**
1.2094 + * Set the parameter names for a symbol from the name index in the
1.2095 + * parameterNameIndicies array. The type of the symbol may have changed
1.2096 + * while reading the method attributes (see the Signature attribute).
1.2097 + * This may be because of generic information or because anonymous
1.2098 + * synthetic parameters were added. The original type (as read from
1.2099 + * the method descriptor) is used to help guess the existence of
1.2100 + * anonymous synthetic parameters.
1.2101 + * On completion, sym.savedParameter names will either be null (if
1.2102 + * no parameter names were found in the class file) or will be set to a
1.2103 + * list of names, one per entry in sym.type.getParameterTypes, with
1.2104 + * any missing names represented by the empty name.
1.2105 + */
1.2106 + void setParameterNames(MethodSymbol sym, Type jvmType) {
1.2107 + // if no names were found in the class file, there's nothing more to do
1.2108 + if (!haveParameterNameIndices)
1.2109 + return;
1.2110 + // If we get parameter names from MethodParameters, then we
1.2111 + // don't need to skip.
1.2112 + int firstParam = 0;
1.2113 + if (!sawMethodParameters) {
1.2114 + firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
1.2115 + // the code in readMethod may have skipped the first
1.2116 + // parameter when setting up the MethodType. If so, we
1.2117 + // make a corresponding allowance here for the position of
1.2118 + // the first parameter. Note that this assumes the
1.2119 + // skipped parameter has a width of 1 -- i.e. it is not
1.2120 + // a double width type (long or double.)
1.2121 + if (sym.name == names.init && currentOwner.hasOuterInstance()) {
1.2122 + // Sometimes anonymous classes don't have an outer
1.2123 + // instance, however, there is no reliable way to tell so
1.2124 + // we never strip this$n
1.2125 + if (!currentOwner.name.isEmpty())
1.2126 + firstParam += 1;
1.2127 + }
1.2128 +
1.2129 + if (sym.type != jvmType) {
1.2130 + // reading the method attributes has caused the
1.2131 + // symbol's type to be changed. (i.e. the Signature
1.2132 + // attribute.) This may happen if there are hidden
1.2133 + // (synthetic) parameters in the descriptor, but not
1.2134 + // in the Signature. The position of these hidden
1.2135 + // parameters is unspecified; for now, assume they are
1.2136 + // at the beginning, and so skip over them. The
1.2137 + // primary case for this is two hidden parameters
1.2138 + // passed into Enum constructors.
1.2139 + int skip = Code.width(jvmType.getParameterTypes())
1.2140 + - Code.width(sym.type.getParameterTypes());
1.2141 + firstParam += skip;
1.2142 + }
1.2143 + }
1.2144 + List<Name> paramNames = List.nil();
1.2145 + int index = firstParam;
1.2146 + for (Type t: sym.type.getParameterTypes()) {
1.2147 + int nameIdx = (index < parameterNameIndices.length
1.2148 + ? parameterNameIndices[index] : 0);
1.2149 + Name name = nameIdx == 0 ? names.empty : readName(nameIdx);
1.2150 + paramNames = paramNames.prepend(name);
1.2151 + index += Code.width(t);
1.2152 + }
1.2153 + sym.savedParameterNames = paramNames.reverse();
1.2154 + }
1.2155 +
1.2156 + /**
1.2157 + * skip n bytes
1.2158 + */
1.2159 + void skipBytes(int n) {
1.2160 + bp = bp + n;
1.2161 + }
1.2162 +
1.2163 + /** Skip a field or method
1.2164 + */
1.2165 + void skipMember() {
1.2166 + bp = bp + 6;
1.2167 + char ac = nextChar();
1.2168 + for (int i = 0; i < ac; i++) {
1.2169 + bp = bp + 2;
1.2170 + int attrLen = nextInt();
1.2171 + bp = bp + attrLen;
1.2172 + }
1.2173 + }
1.2174 +
1.2175 + /** Enter type variables of this classtype and all enclosing ones in
1.2176 + * `typevars'.
1.2177 + */
1.2178 + protected void enterTypevars(Type t) {
1.2179 + if (t.getEnclosingType() != null && t.getEnclosingType().hasTag(CLASS))
1.2180 + enterTypevars(t.getEnclosingType());
1.2181 + for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
1.2182 + typevars.enter(xs.head.tsym);
1.2183 + }
1.2184 +
1.2185 + protected void enterTypevars(Symbol sym) {
1.2186 + if (sym.owner.kind == MTH) {
1.2187 + enterTypevars(sym.owner);
1.2188 + enterTypevars(sym.owner.owner);
1.2189 + }
1.2190 + enterTypevars(sym.type);
1.2191 + }
1.2192 +
1.2193 + /** Read contents of a given class symbol `c'. Both external and internal
1.2194 + * versions of an inner class are read.
1.2195 + */
1.2196 + void readClass(ClassSymbol c) {
1.2197 + ClassType ct = (ClassType)c.type;
1.2198 +
1.2199 + // allocate scope for members
1.2200 + c.members_field = new Scope(c);
1.2201 +
1.2202 + // prepare type variable table
1.2203 + typevars = typevars.dup(currentOwner);
1.2204 + if (ct.getEnclosingType().hasTag(CLASS))
1.2205 + enterTypevars(ct.getEnclosingType());
1.2206 +
1.2207 + // read flags, or skip if this is an inner class
1.2208 + long flags = adjustClassFlags(nextChar());
1.2209 + if (c.owner.kind == PCK) c.flags_field = flags;
1.2210 +
1.2211 + // read own class name and check that it matches
1.2212 + ClassSymbol self = readClassSymbol(nextChar());
1.2213 + if (c != self)
1.2214 + throw badClassFile("class.file.wrong.class",
1.2215 + self.flatname);
1.2216 +
1.2217 + // class attributes must be read before class
1.2218 + // skip ahead to read class attributes
1.2219 + int startbp = bp;
1.2220 + nextChar();
1.2221 + char interfaceCount = nextChar();
1.2222 + bp += interfaceCount * 2;
1.2223 + char fieldCount = nextChar();
1.2224 + for (int i = 0; i < fieldCount; i++) skipMember();
1.2225 + char methodCount = nextChar();
1.2226 + for (int i = 0; i < methodCount; i++) skipMember();
1.2227 + readClassAttrs(c);
1.2228 +
1.2229 + if (readAllOfClassFile) {
1.2230 + for (int i = 1; i < poolObj.length; i++) readPool(i);
1.2231 + c.pool = new Pool(poolObj.length, poolObj, types);
1.2232 + }
1.2233 +
1.2234 + // reset and read rest of classinfo
1.2235 + bp = startbp;
1.2236 + int n = nextChar();
1.2237 + if (ct.supertype_field == null)
1.2238 + ct.supertype_field = (n == 0)
1.2239 + ? Type.noType
1.2240 + : readClassSymbol(n).erasure(types);
1.2241 + n = nextChar();
1.2242 + List<Type> is = List.nil();
1.2243 + for (int i = 0; i < n; i++) {
1.2244 + Type _inter = readClassSymbol(nextChar()).erasure(types);
1.2245 + is = is.prepend(_inter);
1.2246 + }
1.2247 + if (ct.interfaces_field == null)
1.2248 + ct.interfaces_field = is.reverse();
1.2249 +
1.2250 + Assert.check(fieldCount == nextChar());
1.2251 + for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
1.2252 + Assert.check(methodCount == nextChar());
1.2253 + for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
1.2254 +
1.2255 + typevars = typevars.leave();
1.2256 + }
1.2257 +
1.2258 + /** Read inner class info. For each inner/outer pair allocate a
1.2259 + * member class.
1.2260 + */
1.2261 + void readInnerClasses(ClassSymbol c) {
1.2262 + int n = nextChar();
1.2263 + for (int i = 0; i < n; i++) {
1.2264 + nextChar(); // skip inner class symbol
1.2265 + ClassSymbol outer = readClassSymbol(nextChar());
1.2266 + Name name = readName(nextChar());
1.2267 + if (name == null) name = names.empty;
1.2268 + long flags = adjustClassFlags(nextChar());
1.2269 + if (outer != null) { // we have a member class
1.2270 + if (name == names.empty)
1.2271 + name = names.one;
1.2272 + ClassSymbol member = enterClass(name, outer);
1.2273 + if ((flags & STATIC) == 0) {
1.2274 + ((ClassType)member.type).setEnclosingType(outer.type);
1.2275 + if (member.erasure_field != null)
1.2276 + ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
1.2277 + }
1.2278 + if (c == outer) {
1.2279 + member.flags_field = flags;
1.2280 + enterMember(c, member);
1.2281 + }
1.2282 + }
1.2283 + }
1.2284 + }
1.2285 +
1.2286 + /** Read a class file.
1.2287 + */
1.2288 + private void readClassFile(ClassSymbol c) throws IOException {
1.2289 + int magic = nextInt();
1.2290 + if (magic != JAVA_MAGIC)
1.2291 + throw badClassFile("illegal.start.of.class.file");
1.2292 +
1.2293 + minorVersion = nextChar();
1.2294 + majorVersion = nextChar();
1.2295 + int maxMajor = Target.MAX().majorVersion;
1.2296 + int maxMinor = Target.MAX().minorVersion;
1.2297 + if (majorVersion > maxMajor ||
1.2298 + majorVersion * 1000 + minorVersion <
1.2299 + Target.MIN().majorVersion * 1000 + Target.MIN().minorVersion)
1.2300 + {
1.2301 + if (majorVersion == (maxMajor + 1))
1.2302 + log.warning("big.major.version",
1.2303 + currentClassFile,
1.2304 + majorVersion,
1.2305 + maxMajor);
1.2306 + else
1.2307 + throw badClassFile("wrong.version",
1.2308 + Integer.toString(majorVersion),
1.2309 + Integer.toString(minorVersion),
1.2310 + Integer.toString(maxMajor),
1.2311 + Integer.toString(maxMinor));
1.2312 + }
1.2313 + else if (checkClassFile &&
1.2314 + majorVersion == maxMajor &&
1.2315 + minorVersion > maxMinor)
1.2316 + {
1.2317 + printCCF("found.later.version",
1.2318 + Integer.toString(minorVersion));
1.2319 + }
1.2320 + indexPool();
1.2321 + if (signatureBuffer.length < bp) {
1.2322 + int ns = Integer.highestOneBit(bp) << 1;
1.2323 + signatureBuffer = new byte[ns];
1.2324 + }
1.2325 + readClass(c);
1.2326 + }
1.2327 +
1.2328 +/************************************************************************
1.2329 + * Adjusting flags
1.2330 + ***********************************************************************/
1.2331 +
1.2332 + long adjustFieldFlags(long flags) {
1.2333 + return flags;
1.2334 + }
1.2335 + long adjustMethodFlags(long flags) {
1.2336 + if ((flags & ACC_BRIDGE) != 0) {
1.2337 + flags &= ~ACC_BRIDGE;
1.2338 + flags |= BRIDGE;
1.2339 + if (!allowGenerics)
1.2340 + flags &= ~SYNTHETIC;
1.2341 + }
1.2342 + if ((flags & ACC_VARARGS) != 0) {
1.2343 + flags &= ~ACC_VARARGS;
1.2344 + flags |= VARARGS;
1.2345 + }
1.2346 + return flags;
1.2347 + }
1.2348 + long adjustClassFlags(long flags) {
1.2349 + return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
1.2350 + }
1.2351 +
1.2352 +/************************************************************************
1.2353 + * Loading Classes
1.2354 + ***********************************************************************/
1.2355 +
1.2356 + /** Define a new class given its name and owner.
1.2357 + */
1.2358 + public ClassSymbol defineClass(Name name, Symbol owner) {
1.2359 + ClassSymbol c = new ClassSymbol(0, name, owner);
1.2360 + if (owner.kind == PCK)
1.2361 + Assert.checkNull(classes.get(c.flatname), c);
1.2362 + c.completer = thisCompleter;
1.2363 + return c;
1.2364 + }
1.2365 +
1.2366 + /** Create a new toplevel or member class symbol with given name
1.2367 + * and owner and enter in `classes' unless already there.
1.2368 + */
1.2369 + public ClassSymbol enterClass(Name name, TypeSymbol owner) {
1.2370 + Name flatname = TypeSymbol.formFlatName(name, owner);
1.2371 + ClassSymbol c = classes.get(flatname);
1.2372 + if (c == null) {
1.2373 + c = defineClass(name, owner);
1.2374 + classes.put(flatname, c);
1.2375 + } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) {
1.2376 + // reassign fields of classes that might have been loaded with
1.2377 + // their flat names.
1.2378 + c.owner.members().remove(c);
1.2379 + c.name = name;
1.2380 + c.owner = owner;
1.2381 + c.fullname = ClassSymbol.formFullName(name, owner);
1.2382 + }
1.2383 + return c;
1.2384 + }
1.2385 +
1.2386 + /**
1.2387 + * Creates a new toplevel class symbol with given flat name and
1.2388 + * given class (or source) file.
1.2389 + *
1.2390 + * @param flatName a fully qualified binary class name
1.2391 + * @param classFile the class file or compilation unit defining
1.2392 + * the class (may be {@code null})
1.2393 + * @return a newly created class symbol
1.2394 + * @throws AssertionError if the class symbol already exists
1.2395 + */
1.2396 + public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) {
1.2397 + ClassSymbol cs = classes.get(flatName);
1.2398 + if (cs != null) {
1.2399 + String msg = Log.format("%s: completer = %s; class file = %s; source file = %s",
1.2400 + cs.fullname,
1.2401 + cs.completer,
1.2402 + cs.classfile,
1.2403 + cs.sourcefile);
1.2404 + throw new AssertionError(msg);
1.2405 + }
1.2406 + Name packageName = Convert.packagePart(flatName);
1.2407 + PackageSymbol owner = packageName.isEmpty()
1.2408 + ? syms.unnamedPackage
1.2409 + : enterPackage(packageName);
1.2410 + cs = defineClass(Convert.shortName(flatName), owner);
1.2411 + cs.classfile = classFile;
1.2412 + classes.put(flatName, cs);
1.2413 + return cs;
1.2414 + }
1.2415 +
1.2416 + /** Create a new member or toplevel class symbol with given flat name
1.2417 + * and enter in `classes' unless already there.
1.2418 + */
1.2419 + public ClassSymbol enterClass(Name flatname) {
1.2420 + ClassSymbol c = classes.get(flatname);
1.2421 + if (c == null)
1.2422 + return enterClass(flatname, (JavaFileObject)null);
1.2423 + else
1.2424 + return c;
1.2425 + }
1.2426 +
1.2427 + /** Completion for classes to be loaded. Before a class is loaded
1.2428 + * we make sure its enclosing class (if any) is loaded.
1.2429 + */
1.2430 + private void complete(Symbol sym) throws CompletionFailure {
1.2431 + if (sym.kind == TYP) {
1.2432 + ClassSymbol c = (ClassSymbol)sym;
1.2433 + c.members_field = new Scope.ErrorScope(c); // make sure it's always defined
1.2434 + annotate.enterStart();
1.2435 + try {
1.2436 + completeOwners(c.owner);
1.2437 + completeEnclosing(c);
1.2438 + } finally {
1.2439 + // The flush needs to happen only after annotations
1.2440 + // are filled in.
1.2441 + annotate.enterDoneWithoutFlush();
1.2442 + }
1.2443 + fillIn(c);
1.2444 + } else if (sym.kind == PCK) {
1.2445 + PackageSymbol p = (PackageSymbol)sym;
1.2446 + try {
1.2447 + fillIn(p);
1.2448 + } catch (IOException ex) {
1.2449 + throw new CompletionFailure(sym, ex.getLocalizedMessage()).initCause(ex);
1.2450 + }
1.2451 + }
1.2452 + if (!filling)
1.2453 + annotate.flush(); // finish attaching annotations
1.2454 + }
1.2455 +
1.2456 + /** complete up through the enclosing package. */
1.2457 + private void completeOwners(Symbol o) {
1.2458 + if (o.kind != PCK) completeOwners(o.owner);
1.2459 + o.complete();
1.2460 + }
1.2461 +
1.2462 + /**
1.2463 + * Tries to complete lexically enclosing classes if c looks like a
1.2464 + * nested class. This is similar to completeOwners but handles
1.2465 + * the situation when a nested class is accessed directly as it is
1.2466 + * possible with the Tree API or javax.lang.model.*.
1.2467 + */
1.2468 + private void completeEnclosing(ClassSymbol c) {
1.2469 + if (c.owner.kind == PCK) {
1.2470 + Symbol owner = c.owner;
1.2471 + for (Name name : Convert.enclosingCandidates(Convert.shortName(c.name))) {
1.2472 + Symbol encl = owner.members().lookup(name).sym;
1.2473 + if (encl == null)
1.2474 + encl = classes.get(TypeSymbol.formFlatName(name, owner));
1.2475 + if (encl != null)
1.2476 + encl.complete();
1.2477 + }
1.2478 + }
1.2479 + }
1.2480 +
1.2481 + /** We can only read a single class file at a time; this
1.2482 + * flag keeps track of when we are currently reading a class
1.2483 + * file.
1.2484 + */
1.2485 + private boolean filling = false;
1.2486 +
1.2487 + /** Fill in definition of class `c' from corresponding class or
1.2488 + * source file.
1.2489 + */
1.2490 + private void fillIn(ClassSymbol c) {
1.2491 + if (completionFailureName == c.fullname) {
1.2492 + throw new CompletionFailure(c, "user-selected completion failure by class name");
1.2493 + }
1.2494 + currentOwner = c;
1.2495 + warnedAttrs.clear();
1.2496 + JavaFileObject classfile = c.classfile;
1.2497 + if (classfile != null) {
1.2498 + JavaFileObject previousClassFile = currentClassFile;
1.2499 + try {
1.2500 + if (filling) {
1.2501 + Assert.error("Filling " + classfile.toUri() + " during " + previousClassFile);
1.2502 + }
1.2503 + currentClassFile = classfile;
1.2504 + if (verbose) {
1.2505 + log.printVerbose("loading", currentClassFile.toString());
1.2506 + }
1.2507 + if (classfile.getKind() == JavaFileObject.Kind.CLASS) {
1.2508 + filling = true;
1.2509 + try {
1.2510 + bp = 0;
1.2511 + buf = readInputStream(buf, classfile.openInputStream());
1.2512 + readClassFile(c);
1.2513 + if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
1.2514 + List<Type> missing = missingTypeVariables;
1.2515 + List<Type> found = foundTypeVariables;
1.2516 + missingTypeVariables = List.nil();
1.2517 + foundTypeVariables = List.nil();
1.2518 + filling = false;
1.2519 + ClassType ct = (ClassType)currentOwner.type;
1.2520 + ct.supertype_field =
1.2521 + types.subst(ct.supertype_field, missing, found);
1.2522 + ct.interfaces_field =
1.2523 + types.subst(ct.interfaces_field, missing, found);
1.2524 + } else if (missingTypeVariables.isEmpty() !=
1.2525 + foundTypeVariables.isEmpty()) {
1.2526 + Name name = missingTypeVariables.head.tsym.name;
1.2527 + throw badClassFile("undecl.type.var", name);
1.2528 + }
1.2529 + } finally {
1.2530 + missingTypeVariables = List.nil();
1.2531 + foundTypeVariables = List.nil();
1.2532 + filling = false;
1.2533 + }
1.2534 + } else {
1.2535 + if (sourceCompleter != null) {
1.2536 + sourceCompleter.complete(c);
1.2537 + } else {
1.2538 + throw new IllegalStateException("Source completer required to read "
1.2539 + + classfile.toUri());
1.2540 + }
1.2541 + }
1.2542 + return;
1.2543 + } catch (IOException ex) {
1.2544 + throw badClassFile("unable.to.access.file", ex.getMessage());
1.2545 + } finally {
1.2546 + currentClassFile = previousClassFile;
1.2547 + }
1.2548 + } else {
1.2549 + JCDiagnostic diag =
1.2550 + diagFactory.fragment("class.file.not.found", c.flatname);
1.2551 + throw
1.2552 + newCompletionFailure(c, diag);
1.2553 + }
1.2554 + }
1.2555 + // where
1.2556 + private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
1.2557 + try {
1.2558 + buf = ensureCapacity(buf, s.available());
1.2559 + int r = s.read(buf);
1.2560 + int bp = 0;
1.2561 + while (r != -1) {
1.2562 + bp += r;
1.2563 + buf = ensureCapacity(buf, bp);
1.2564 + r = s.read(buf, bp, buf.length - bp);
1.2565 + }
1.2566 + return buf;
1.2567 + } finally {
1.2568 + try {
1.2569 + s.close();
1.2570 + } catch (IOException e) {
1.2571 + /* Ignore any errors, as this stream may have already
1.2572 + * thrown a related exception which is the one that
1.2573 + * should be reported.
1.2574 + */
1.2575 + }
1.2576 + }
1.2577 + }
1.2578 + /*
1.2579 + * ensureCapacity will increase the buffer as needed, taking note that
1.2580 + * the new buffer will always be greater than the needed and never
1.2581 + * exactly equal to the needed size or bp. If equal then the read (above)
1.2582 + * will infinitely loop as buf.length - bp == 0.
1.2583 + */
1.2584 + private static byte[] ensureCapacity(byte[] buf, int needed) {
1.2585 + if (buf.length <= needed) {
1.2586 + byte[] old = buf;
1.2587 + buf = new byte[Integer.highestOneBit(needed) << 1];
1.2588 + System.arraycopy(old, 0, buf, 0, old.length);
1.2589 + }
1.2590 + return buf;
1.2591 + }
1.2592 + /** Static factory for CompletionFailure objects.
1.2593 + * In practice, only one can be used at a time, so we share one
1.2594 + * to reduce the expense of allocating new exception objects.
1.2595 + */
1.2596 + private CompletionFailure newCompletionFailure(TypeSymbol c,
1.2597 + JCDiagnostic diag) {
1.2598 + if (!cacheCompletionFailure) {
1.2599 + // log.warning("proc.messager",
1.2600 + // Log.getLocalizedString("class.file.not.found", c.flatname));
1.2601 + // c.debug.printStackTrace();
1.2602 + return new CompletionFailure(c, diag);
1.2603 + } else {
1.2604 + CompletionFailure result = cachedCompletionFailure;
1.2605 + result.sym = c;
1.2606 + result.diag = diag;
1.2607 + return result;
1.2608 + }
1.2609 + }
1.2610 + private CompletionFailure cachedCompletionFailure =
1.2611 + new CompletionFailure(null, (JCDiagnostic) null);
1.2612 + {
1.2613 + cachedCompletionFailure.setStackTrace(new StackTraceElement[0]);
1.2614 + }
1.2615 +
1.2616 + /** Load a toplevel class with given fully qualified name
1.2617 + * The class is entered into `classes' only if load was successful.
1.2618 + */
1.2619 + public ClassSymbol loadClass(Name flatname) throws CompletionFailure {
1.2620 + boolean absent = classes.get(flatname) == null;
1.2621 + ClassSymbol c = enterClass(flatname);
1.2622 + if (c.members_field == null && c.completer != null) {
1.2623 + try {
1.2624 + c.complete();
1.2625 + } catch (CompletionFailure ex) {
1.2626 + if (absent) classes.remove(flatname);
1.2627 + throw ex;
1.2628 + }
1.2629 + }
1.2630 + return c;
1.2631 + }
1.2632 +
1.2633 +/************************************************************************
1.2634 + * Loading Packages
1.2635 + ***********************************************************************/
1.2636 +
1.2637 + /** Check to see if a package exists, given its fully qualified name.
1.2638 + */
1.2639 + public boolean packageExists(Name fullname) {
1.2640 + return enterPackage(fullname).exists();
1.2641 + }
1.2642 +
1.2643 + /** Make a package, given its fully qualified name.
1.2644 + */
1.2645 + public PackageSymbol enterPackage(Name fullname) {
1.2646 + PackageSymbol p = packages.get(fullname);
1.2647 + if (p == null) {
1.2648 + Assert.check(!fullname.isEmpty(), "rootPackage missing!");
1.2649 + p = new PackageSymbol(
1.2650 + Convert.shortName(fullname),
1.2651 + enterPackage(Convert.packagePart(fullname)));
1.2652 + p.completer = thisCompleter;
1.2653 + packages.put(fullname, p);
1.2654 + }
1.2655 + return p;
1.2656 + }
1.2657 +
1.2658 + /** Make a package, given its unqualified name and enclosing package.
1.2659 + */
1.2660 + public PackageSymbol enterPackage(Name name, PackageSymbol owner) {
1.2661 + return enterPackage(TypeSymbol.formFullName(name, owner));
1.2662 + }
1.2663 +
1.2664 + /** Include class corresponding to given class file in package,
1.2665 + * unless (1) we already have one the same kind (.class or .java), or
1.2666 + * (2) we have one of the other kind, and the given class file
1.2667 + * is older.
1.2668 + */
1.2669 + protected void includeClassFile(PackageSymbol p, JavaFileObject file) {
1.2670 + if ((p.flags_field & EXISTS) == 0)
1.2671 + for (Symbol q = p; q != null && q.kind == PCK; q = q.owner)
1.2672 + q.flags_field |= EXISTS;
1.2673 + JavaFileObject.Kind kind = file.getKind();
1.2674 + int seen;
1.2675 + if (kind == JavaFileObject.Kind.CLASS)
1.2676 + seen = CLASS_SEEN;
1.2677 + else
1.2678 + seen = SOURCE_SEEN;
1.2679 + String binaryName = fileManager.inferBinaryName(currentLoc, file);
1.2680 + int lastDot = binaryName.lastIndexOf(".");
1.2681 + Name classname = names.fromString(binaryName.substring(lastDot + 1));
1.2682 + boolean isPkgInfo = classname == names.package_info;
1.2683 + ClassSymbol c = isPkgInfo
1.2684 + ? p.package_info
1.2685 + : (ClassSymbol) p.members_field.lookup(classname).sym;
1.2686 + if (c == null) {
1.2687 + c = enterClass(classname, p);
1.2688 + if (c.classfile == null) // only update the file if's it's newly created
1.2689 + c.classfile = file;
1.2690 + if (isPkgInfo) {
1.2691 + p.package_info = c;
1.2692 + } else {
1.2693 + if (c.owner == p) // it might be an inner class
1.2694 + p.members_field.enter(c);
1.2695 + }
1.2696 + } else if (c.classfile != null && (c.flags_field & seen) == 0) {
1.2697 + // if c.classfile == null, we are currently compiling this class
1.2698 + // and no further action is necessary.
1.2699 + // if (c.flags_field & seen) != 0, we have already encountered
1.2700 + // a file of the same kind; again no further action is necessary.
1.2701 + if ((c.flags_field & (CLASS_SEEN | SOURCE_SEEN)) != 0)
1.2702 + c.classfile = preferredFileObject(file, c.classfile);
1.2703 + }
1.2704 + c.flags_field |= seen;
1.2705 + }
1.2706 +
1.2707 + /** Implement policy to choose to derive information from a source
1.2708 + * file or a class file when both are present. May be overridden
1.2709 + * by subclasses.
1.2710 + */
1.2711 + protected JavaFileObject preferredFileObject(JavaFileObject a,
1.2712 + JavaFileObject b) {
1.2713 +
1.2714 + if (preferSource)
1.2715 + return (a.getKind() == JavaFileObject.Kind.SOURCE) ? a : b;
1.2716 + else {
1.2717 + long adate = a.getLastModified();
1.2718 + long bdate = b.getLastModified();
1.2719 + // 6449326: policy for bad lastModifiedTime in ClassReader
1.2720 + //assert adate >= 0 && bdate >= 0;
1.2721 + return (adate > bdate) ? a : b;
1.2722 + }
1.2723 + }
1.2724 +
1.2725 + /**
1.2726 + * specifies types of files to be read when filling in a package symbol
1.2727 + */
1.2728 + protected EnumSet<JavaFileObject.Kind> getPackageFileKinds() {
1.2729 + return EnumSet.of(JavaFileObject.Kind.CLASS, JavaFileObject.Kind.SOURCE);
1.2730 + }
1.2731 +
1.2732 + /**
1.2733 + * this is used to support javadoc
1.2734 + */
1.2735 + protected void extraFileActions(PackageSymbol pack, JavaFileObject fe) {
1.2736 + }
1.2737 +
1.2738 + protected Location currentLoc; // FIXME
1.2739 +
1.2740 + private boolean verbosePath = true;
1.2741 +
1.2742 + /** Load directory of package into members scope.
1.2743 + */
1.2744 + private void fillIn(PackageSymbol p) throws IOException {
1.2745 + if (p.members_field == null) p.members_field = new Scope(p);
1.2746 + String packageName = p.fullname.toString();
1.2747 +
1.2748 + Set<JavaFileObject.Kind> kinds = getPackageFileKinds();
1.2749 +
1.2750 + fillIn(p, PLATFORM_CLASS_PATH,
1.2751 + fileManager.list(PLATFORM_CLASS_PATH,
1.2752 + packageName,
1.2753 + EnumSet.of(JavaFileObject.Kind.CLASS),
1.2754 + false));
1.2755 +
1.2756 + Set<JavaFileObject.Kind> classKinds = EnumSet.copyOf(kinds);
1.2757 + classKinds.remove(JavaFileObject.Kind.SOURCE);
1.2758 + boolean wantClassFiles = !classKinds.isEmpty();
1.2759 +
1.2760 + Set<JavaFileObject.Kind> sourceKinds = EnumSet.copyOf(kinds);
1.2761 + sourceKinds.remove(JavaFileObject.Kind.CLASS);
1.2762 + boolean wantSourceFiles = !sourceKinds.isEmpty();
1.2763 +
1.2764 + boolean haveSourcePath = fileManager.hasLocation(SOURCE_PATH);
1.2765 +
1.2766 + if (verbose && verbosePath) {
1.2767 + if (fileManager instanceof StandardJavaFileManager) {
1.2768 + StandardJavaFileManager fm = (StandardJavaFileManager)fileManager;
1.2769 + if (haveSourcePath && wantSourceFiles) {
1.2770 + List<File> path = List.nil();
1.2771 + for (File file : fm.getLocation(SOURCE_PATH)) {
1.2772 + path = path.prepend(file);
1.2773 + }
1.2774 + log.printVerbose("sourcepath", path.reverse().toString());
1.2775 + } else if (wantSourceFiles) {
1.2776 + List<File> path = List.nil();
1.2777 + for (File file : fm.getLocation(CLASS_PATH)) {
1.2778 + path = path.prepend(file);
1.2779 + }
1.2780 + log.printVerbose("sourcepath", path.reverse().toString());
1.2781 + }
1.2782 + if (wantClassFiles) {
1.2783 + List<File> path = List.nil();
1.2784 + for (File file : fm.getLocation(PLATFORM_CLASS_PATH)) {
1.2785 + path = path.prepend(file);
1.2786 + }
1.2787 + for (File file : fm.getLocation(CLASS_PATH)) {
1.2788 + path = path.prepend(file);
1.2789 + }
1.2790 + log.printVerbose("classpath", path.reverse().toString());
1.2791 + }
1.2792 + }
1.2793 + }
1.2794 +
1.2795 + if (wantSourceFiles && !haveSourcePath) {
1.2796 + fillIn(p, CLASS_PATH,
1.2797 + fileManager.list(CLASS_PATH,
1.2798 + packageName,
1.2799 + kinds,
1.2800 + false));
1.2801 + } else {
1.2802 + if (wantClassFiles)
1.2803 + fillIn(p, CLASS_PATH,
1.2804 + fileManager.list(CLASS_PATH,
1.2805 + packageName,
1.2806 + classKinds,
1.2807 + false));
1.2808 + if (wantSourceFiles)
1.2809 + fillIn(p, SOURCE_PATH,
1.2810 + fileManager.list(SOURCE_PATH,
1.2811 + packageName,
1.2812 + sourceKinds,
1.2813 + false));
1.2814 + }
1.2815 + verbosePath = false;
1.2816 + }
1.2817 + // where
1.2818 + private void fillIn(PackageSymbol p,
1.2819 + Location location,
1.2820 + Iterable<JavaFileObject> files)
1.2821 + {
1.2822 + currentLoc = location;
1.2823 + for (JavaFileObject fo : files) {
1.2824 + switch (fo.getKind()) {
1.2825 + case CLASS:
1.2826 + case SOURCE: {
1.2827 + // TODO pass binaryName to includeClassFile
1.2828 + String binaryName = fileManager.inferBinaryName(currentLoc, fo);
1.2829 + String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1);
1.2830 + if (SourceVersion.isIdentifier(simpleName) ||
1.2831 + simpleName.equals("package-info"))
1.2832 + includeClassFile(p, fo);
1.2833 + break;
1.2834 + }
1.2835 + default:
1.2836 + extraFileActions(p, fo);
1.2837 + }
1.2838 + }
1.2839 + }
1.2840 +
1.2841 + /** Output for "-checkclassfile" option.
1.2842 + * @param key The key to look up the correct internationalized string.
1.2843 + * @param arg An argument for substitution into the output string.
1.2844 + */
1.2845 + private void printCCF(String key, Object arg) {
1.2846 + log.printLines(key, arg);
1.2847 + }
1.2848 +
1.2849 +
1.2850 + public interface SourceCompleter {
1.2851 + void complete(ClassSymbol sym)
1.2852 + throws CompletionFailure;
1.2853 + }
1.2854 +
1.2855 + /**
1.2856 + * A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
1.2857 + * The attribute is only the last component of the original filename, so is unlikely
1.2858 + * to be valid as is, so operations other than those to access the name throw
1.2859 + * UnsupportedOperationException
1.2860 + */
1.2861 + private static class SourceFileObject extends BaseFileObject {
1.2862 +
1.2863 + /** The file's name.
1.2864 + */
1.2865 + private Name name;
1.2866 + private Name flatname;
1.2867 +
1.2868 + public SourceFileObject(Name name, Name flatname) {
1.2869 + super(null); // no file manager; never referenced for this file object
1.2870 + this.name = name;
1.2871 + this.flatname = flatname;
1.2872 + }
1.2873 +
1.2874 + @Override
1.2875 + public URI toUri() {
1.2876 + try {
1.2877 + return new URI(null, name.toString(), null);
1.2878 + } catch (URISyntaxException e) {
1.2879 + throw new CannotCreateUriError(name.toString(), e);
1.2880 + }
1.2881 + }
1.2882 +
1.2883 + @Override
1.2884 + public String getName() {
1.2885 + return name.toString();
1.2886 + }
1.2887 +
1.2888 + @Override
1.2889 + public String getShortName() {
1.2890 + return getName();
1.2891 + }
1.2892 +
1.2893 + @Override
1.2894 + public JavaFileObject.Kind getKind() {
1.2895 + return getKind(getName());
1.2896 + }
1.2897 +
1.2898 + @Override
1.2899 + public InputStream openInputStream() {
1.2900 + throw new UnsupportedOperationException();
1.2901 + }
1.2902 +
1.2903 + @Override
1.2904 + public OutputStream openOutputStream() {
1.2905 + throw new UnsupportedOperationException();
1.2906 + }
1.2907 +
1.2908 + @Override
1.2909 + public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
1.2910 + throw new UnsupportedOperationException();
1.2911 + }
1.2912 +
1.2913 + @Override
1.2914 + public Reader openReader(boolean ignoreEncodingErrors) {
1.2915 + throw new UnsupportedOperationException();
1.2916 + }
1.2917 +
1.2918 + @Override
1.2919 + public Writer openWriter() {
1.2920 + throw new UnsupportedOperationException();
1.2921 + }
1.2922 +
1.2923 + @Override
1.2924 + public long getLastModified() {
1.2925 + throw new UnsupportedOperationException();
1.2926 + }
1.2927 +
1.2928 + @Override
1.2929 + public boolean delete() {
1.2930 + throw new UnsupportedOperationException();
1.2931 + }
1.2932 +
1.2933 + @Override
1.2934 + protected String inferBinaryName(Iterable<? extends File> path) {
1.2935 + return flatname.toString();
1.2936 + }
1.2937 +
1.2938 + @Override
1.2939 + public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
1.2940 + return true; // fail-safe mode
1.2941 + }
1.2942 +
1.2943 + /**
1.2944 + * Check if two file objects are equal.
1.2945 + * SourceFileObjects are just placeholder objects for the value of a
1.2946 + * SourceFile attribute, and do not directly represent specific files.
1.2947 + * Two SourceFileObjects are equal if their names are equal.
1.2948 + */
1.2949 + @Override
1.2950 + public boolean equals(Object other) {
1.2951 + if (this == other)
1.2952 + return true;
1.2953 +
1.2954 + if (!(other instanceof SourceFileObject))
1.2955 + return false;
1.2956 +
1.2957 + SourceFileObject o = (SourceFileObject) other;
1.2958 + return name.equals(o.name);
1.2959 + }
1.2960 +
1.2961 + @Override
1.2962 + public int hashCode() {
1.2963 + return name.hashCode();
1.2964 + }
1.2965 + }
1.2966 +}
