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 Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,2280 @@
1.4 +/*
1.5 + * Copyright 1999-2006 Sun Microsystems, Inc. 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. Sun designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.25 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.26 + * have any 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.nio.CharBuffer;
1.34 +import java.util.EnumSet;
1.35 +import java.util.HashMap;
1.36 +import java.util.Map;
1.37 +import java.util.Set;
1.38 +import javax.lang.model.SourceVersion;
1.39 +import javax.tools.JavaFileObject;
1.40 +import javax.tools.JavaFileManager;
1.41 +import javax.tools.StandardJavaFileManager;
1.42 +
1.43 +import com.sun.tools.javac.comp.Annotate;
1.44 +import com.sun.tools.javac.code.*;
1.45 +import com.sun.tools.javac.code.Type.*;
1.46 +import com.sun.tools.javac.code.Symbol.*;
1.47 +import com.sun.tools.javac.code.Symtab;
1.48 +import com.sun.tools.javac.util.*;
1.49 +import com.sun.tools.javac.util.List;
1.50 +
1.51 +import static com.sun.tools.javac.code.Flags.*;
1.52 +import static com.sun.tools.javac.code.Kinds.*;
1.53 +import static com.sun.tools.javac.code.TypeTags.*;
1.54 +import com.sun.tools.javac.jvm.ClassFile.NameAndType;
1.55 +import javax.tools.JavaFileManager.Location;
1.56 +import static javax.tools.StandardLocation.*;
1.57 +
1.58 +/** This class provides operations to read a classfile into an internal
1.59 + * representation. The internal representation is anchored in a
1.60 + * ClassSymbol which contains in its scope symbol representations
1.61 + * for all other definitions in the classfile. Top-level Classes themselves
1.62 + * appear as members of the scopes of PackageSymbols.
1.63 + *
1.64 + * <p><b>This is NOT part of any API supported by Sun Microsystems. If
1.65 + * you write code that depends on this, you do so at your own risk.
1.66 + * This code and its internal interfaces are subject to change or
1.67 + * deletion without notice.</b>
1.68 + */
1.69 +public class ClassReader extends ClassFile implements Completer {
1.70 + /** The context key for the class reader. */
1.71 + protected static final Context.Key<ClassReader> classReaderKey =
1.72 + new Context.Key<ClassReader>();
1.73 +
1.74 + Annotate annotate;
1.75 +
1.76 + /** Switch: verbose output.
1.77 + */
1.78 + boolean verbose;
1.79 +
1.80 + /** Switch: check class file for correct minor version, unrecognized
1.81 + * attributes.
1.82 + */
1.83 + boolean checkClassFile;
1.84 +
1.85 + /** Switch: read constant pool and code sections. This switch is initially
1.86 + * set to false but can be turned on from outside.
1.87 + */
1.88 + public boolean readAllOfClassFile = false;
1.89 +
1.90 + /** Switch: read GJ signature information.
1.91 + */
1.92 + boolean allowGenerics;
1.93 +
1.94 + /** Switch: read varargs attribute.
1.95 + */
1.96 + boolean allowVarargs;
1.97 +
1.98 + /** Switch: allow annotations.
1.99 + */
1.100 + boolean allowAnnotations;
1.101 +
1.102 + /** Switch: preserve parameter names from the variable table.
1.103 + */
1.104 + public boolean saveParameterNames;
1.105 +
1.106 + /**
1.107 + * Switch: cache completion failures unless -XDdev is used
1.108 + */
1.109 + private boolean cacheCompletionFailure;
1.110 +
1.111 + /**
1.112 + * Switch: prefer source files instead of newer when both source
1.113 + * and class are available
1.114 + **/
1.115 + public boolean preferSource;
1.116 +
1.117 + /** The log to use for verbose output
1.118 + */
1.119 + final Log log;
1.120 +
1.121 + /** The symbol table. */
1.122 + Symtab syms;
1.123 +
1.124 + Types types;
1.125 +
1.126 + /** The name table. */
1.127 + final Name.Table names;
1.128 +
1.129 + /** Force a completion failure on this name
1.130 + */
1.131 + final Name completionFailureName;
1.132 +
1.133 + /** Access to files
1.134 + */
1.135 + private final JavaFileManager fileManager;
1.136 +
1.137 + /** Can be reassigned from outside:
1.138 + * the completer to be used for ".java" files. If this remains unassigned
1.139 + * ".java" files will not be loaded.
1.140 + */
1.141 + public SourceCompleter sourceCompleter = null;
1.142 +
1.143 + /** A hashtable containing the encountered top-level and member classes,
1.144 + * indexed by flat names. The table does not contain local classes.
1.145 + */
1.146 + private Map<Name,ClassSymbol> classes;
1.147 +
1.148 + /** A hashtable containing the encountered packages.
1.149 + */
1.150 + private Map<Name, PackageSymbol> packages;
1.151 +
1.152 + /** The current scope where type variables are entered.
1.153 + */
1.154 + protected Scope typevars;
1.155 +
1.156 + /** The path name of the class file currently being read.
1.157 + */
1.158 + protected JavaFileObject currentClassFile = null;
1.159 +
1.160 + /** The class or method currently being read.
1.161 + */
1.162 + protected Symbol currentOwner = null;
1.163 +
1.164 + /** The buffer containing the currently read class file.
1.165 + */
1.166 + byte[] buf = new byte[0x0fff0];
1.167 +
1.168 + /** The current input pointer.
1.169 + */
1.170 + int bp;
1.171 +
1.172 + /** The objects of the constant pool.
1.173 + */
1.174 + Object[] poolObj;
1.175 +
1.176 + /** For every constant pool entry, an index into buf where the
1.177 + * defining section of the entry is found.
1.178 + */
1.179 + int[] poolIdx;
1.180 +
1.181 + /** Get the ClassReader instance for this invocation. */
1.182 + public static ClassReader instance(Context context) {
1.183 + ClassReader instance = context.get(classReaderKey);
1.184 + if (instance == null)
1.185 + instance = new ClassReader(context, true);
1.186 + return instance;
1.187 + }
1.188 +
1.189 + /** Initialize classes and packages, treating this as the definitive classreader. */
1.190 + public void init(Symtab syms) {
1.191 + init(syms, true);
1.192 + }
1.193 +
1.194 + /** Initialize classes and packages, optionally treating this as
1.195 + * the definitive classreader.
1.196 + */
1.197 + private void init(Symtab syms, boolean definitive) {
1.198 + if (classes != null) return;
1.199 +
1.200 + if (definitive) {
1.201 + assert packages == null || packages == syms.packages;
1.202 + packages = syms.packages;
1.203 + assert classes == null || classes == syms.classes;
1.204 + classes = syms.classes;
1.205 + } else {
1.206 + packages = new HashMap<Name, PackageSymbol>();
1.207 + classes = new HashMap<Name, ClassSymbol>();
1.208 + }
1.209 +
1.210 + packages.put(names.empty, syms.rootPackage);
1.211 + syms.rootPackage.completer = this;
1.212 + syms.unnamedPackage.completer = this;
1.213 + }
1.214 +
1.215 + /** Construct a new class reader, optionally treated as the
1.216 + * definitive classreader for this invocation.
1.217 + */
1.218 + protected ClassReader(Context context, boolean definitive) {
1.219 + if (definitive) context.put(classReaderKey, this);
1.220 +
1.221 + names = Name.Table.instance(context);
1.222 + syms = Symtab.instance(context);
1.223 + types = Types.instance(context);
1.224 + fileManager = context.get(JavaFileManager.class);
1.225 + if (fileManager == null)
1.226 + throw new AssertionError("FileManager initialization error");
1.227 +
1.228 + init(syms, definitive);
1.229 + log = Log.instance(context);
1.230 +
1.231 + Options options = Options.instance(context);
1.232 + annotate = Annotate.instance(context);
1.233 + verbose = options.get("-verbose") != null;
1.234 + checkClassFile = options.get("-checkclassfile") != null;
1.235 + Source source = Source.instance(context);
1.236 + allowGenerics = source.allowGenerics();
1.237 + allowVarargs = source.allowVarargs();
1.238 + allowAnnotations = source.allowAnnotations();
1.239 + saveParameterNames = options.get("save-parameter-names") != null;
1.240 + cacheCompletionFailure = options.get("dev") == null;
1.241 + preferSource = "source".equals(options.get("-Xprefer"));
1.242 +
1.243 + completionFailureName =
1.244 + (options.get("failcomplete") != null)
1.245 + ? names.fromString(options.get("failcomplete"))
1.246 + : null;
1.247 +
1.248 + typevars = new Scope(syms.noSymbol);
1.249 + }
1.250 +
1.251 + /** Add member to class unless it is synthetic.
1.252 + */
1.253 + private void enterMember(ClassSymbol c, Symbol sym) {
1.254 + if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC)
1.255 + c.members_field.enter(sym);
1.256 + }
1.257 +
1.258 +/************************************************************************
1.259 + * Error Diagnoses
1.260 + ***********************************************************************/
1.261 +
1.262 + public static class BadClassFile extends CompletionFailure {
1.263 + private static final long serialVersionUID = 0;
1.264 +
1.265 + /**
1.266 + * @param msg A localized message.
1.267 + */
1.268 + public BadClassFile(ClassSymbol c, Object cname, Object msg) {
1.269 + super(c, Log.getLocalizedString("bad.class.file.header",
1.270 + cname, msg));
1.271 + }
1.272 + }
1.273 +
1.274 + public BadClassFile badClassFile(String key, Object... args) {
1.275 + return new BadClassFile (
1.276 + currentOwner.enclClass(),
1.277 + currentClassFile,
1.278 + Log.getLocalizedString(key, args));
1.279 + }
1.280 +
1.281 +/************************************************************************
1.282 + * Buffer Access
1.283 + ***********************************************************************/
1.284 +
1.285 + /** Read a character.
1.286 + */
1.287 + char nextChar() {
1.288 + return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF));
1.289 + }
1.290 +
1.291 + /** Read an integer.
1.292 + */
1.293 + int nextInt() {
1.294 + return
1.295 + ((buf[bp++] & 0xFF) << 24) +
1.296 + ((buf[bp++] & 0xFF) << 16) +
1.297 + ((buf[bp++] & 0xFF) << 8) +
1.298 + (buf[bp++] & 0xFF);
1.299 + }
1.300 +
1.301 + /** Extract a character at position bp from buf.
1.302 + */
1.303 + char getChar(int bp) {
1.304 + return
1.305 + (char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF));
1.306 + }
1.307 +
1.308 + /** Extract an integer at position bp from buf.
1.309 + */
1.310 + int getInt(int bp) {
1.311 + return
1.312 + ((buf[bp] & 0xFF) << 24) +
1.313 + ((buf[bp+1] & 0xFF) << 16) +
1.314 + ((buf[bp+2] & 0xFF) << 8) +
1.315 + (buf[bp+3] & 0xFF);
1.316 + }
1.317 +
1.318 +
1.319 + /** Extract a long integer at position bp from buf.
1.320 + */
1.321 + long getLong(int bp) {
1.322 + DataInputStream bufin =
1.323 + new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
1.324 + try {
1.325 + return bufin.readLong();
1.326 + } catch (IOException e) {
1.327 + throw new AssertionError(e);
1.328 + }
1.329 + }
1.330 +
1.331 + /** Extract a float at position bp from buf.
1.332 + */
1.333 + float getFloat(int bp) {
1.334 + DataInputStream bufin =
1.335 + new DataInputStream(new ByteArrayInputStream(buf, bp, 4));
1.336 + try {
1.337 + return bufin.readFloat();
1.338 + } catch (IOException e) {
1.339 + throw new AssertionError(e);
1.340 + }
1.341 + }
1.342 +
1.343 + /** Extract a double at position bp from buf.
1.344 + */
1.345 + double getDouble(int bp) {
1.346 + DataInputStream bufin =
1.347 + new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
1.348 + try {
1.349 + return bufin.readDouble();
1.350 + } catch (IOException e) {
1.351 + throw new AssertionError(e);
1.352 + }
1.353 + }
1.354 +
1.355 +/************************************************************************
1.356 + * Constant Pool Access
1.357 + ***********************************************************************/
1.358 +
1.359 + /** Index all constant pool entries, writing their start addresses into
1.360 + * poolIdx.
1.361 + */
1.362 + void indexPool() {
1.363 + poolIdx = new int[nextChar()];
1.364 + poolObj = new Object[poolIdx.length];
1.365 + int i = 1;
1.366 + while (i < poolIdx.length) {
1.367 + poolIdx[i++] = bp;
1.368 + byte tag = buf[bp++];
1.369 + switch (tag) {
1.370 + case CONSTANT_Utf8: case CONSTANT_Unicode: {
1.371 + int len = nextChar();
1.372 + bp = bp + len;
1.373 + break;
1.374 + }
1.375 + case CONSTANT_Class:
1.376 + case CONSTANT_String:
1.377 + bp = bp + 2;
1.378 + break;
1.379 + case CONSTANT_Fieldref:
1.380 + case CONSTANT_Methodref:
1.381 + case CONSTANT_InterfaceMethodref:
1.382 + case CONSTANT_NameandType:
1.383 + case CONSTANT_Integer:
1.384 + case CONSTANT_Float:
1.385 + bp = bp + 4;
1.386 + break;
1.387 + case CONSTANT_Long:
1.388 + case CONSTANT_Double:
1.389 + bp = bp + 8;
1.390 + i++;
1.391 + break;
1.392 + default:
1.393 + throw badClassFile("bad.const.pool.tag.at",
1.394 + Byte.toString(tag),
1.395 + Integer.toString(bp -1));
1.396 + }
1.397 + }
1.398 + }
1.399 +
1.400 + /** Read constant pool entry at start address i, use pool as a cache.
1.401 + */
1.402 + Object readPool(int i) {
1.403 + Object result = poolObj[i];
1.404 + if (result != null) return result;
1.405 +
1.406 + int index = poolIdx[i];
1.407 + if (index == 0) return null;
1.408 +
1.409 + byte tag = buf[index];
1.410 + switch (tag) {
1.411 + case CONSTANT_Utf8:
1.412 + poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1));
1.413 + break;
1.414 + case CONSTANT_Unicode:
1.415 + throw badClassFile("unicode.str.not.supported");
1.416 + case CONSTANT_Class:
1.417 + poolObj[i] = readClassOrType(getChar(index + 1));
1.418 + break;
1.419 + case CONSTANT_String:
1.420 + // FIXME: (footprint) do not use toString here
1.421 + poolObj[i] = readName(getChar(index + 1)).toString();
1.422 + break;
1.423 + case CONSTANT_Fieldref: {
1.424 + ClassSymbol owner = readClassSymbol(getChar(index + 1));
1.425 + NameAndType nt = (NameAndType)readPool(getChar(index + 3));
1.426 + poolObj[i] = new VarSymbol(0, nt.name, nt.type, owner);
1.427 + break;
1.428 + }
1.429 + case CONSTANT_Methodref:
1.430 + case CONSTANT_InterfaceMethodref: {
1.431 + ClassSymbol owner = readClassSymbol(getChar(index + 1));
1.432 + NameAndType nt = (NameAndType)readPool(getChar(index + 3));
1.433 + poolObj[i] = new MethodSymbol(0, nt.name, nt.type, owner);
1.434 + break;
1.435 + }
1.436 + case CONSTANT_NameandType:
1.437 + poolObj[i] = new NameAndType(
1.438 + readName(getChar(index + 1)),
1.439 + readType(getChar(index + 3)));
1.440 + break;
1.441 + case CONSTANT_Integer:
1.442 + poolObj[i] = getInt(index + 1);
1.443 + break;
1.444 + case CONSTANT_Float:
1.445 + poolObj[i] = new Float(getFloat(index + 1));
1.446 + break;
1.447 + case CONSTANT_Long:
1.448 + poolObj[i] = new Long(getLong(index + 1));
1.449 + break;
1.450 + case CONSTANT_Double:
1.451 + poolObj[i] = new Double(getDouble(index + 1));
1.452 + break;
1.453 + default:
1.454 + throw badClassFile("bad.const.pool.tag", Byte.toString(tag));
1.455 + }
1.456 + return poolObj[i];
1.457 + }
1.458 +
1.459 + /** Read signature and convert to type.
1.460 + */
1.461 + Type readType(int i) {
1.462 + int index = poolIdx[i];
1.463 + return sigToType(buf, index + 3, getChar(index + 1));
1.464 + }
1.465 +
1.466 + /** If name is an array type or class signature, return the
1.467 + * corresponding type; otherwise return a ClassSymbol with given name.
1.468 + */
1.469 + Object readClassOrType(int i) {
1.470 + int index = poolIdx[i];
1.471 + int len = getChar(index + 1);
1.472 + int start = index + 3;
1.473 + assert buf[start] == '[' || buf[start + len - 1] != ';';
1.474 + // by the above assertion, the following test can be
1.475 + // simplified to (buf[start] == '[')
1.476 + return (buf[start] == '[' || buf[start + len - 1] == ';')
1.477 + ? (Object)sigToType(buf, start, len)
1.478 + : (Object)enterClass(names.fromUtf(internalize(buf, start,
1.479 + len)));
1.480 + }
1.481 +
1.482 + /** Read signature and convert to type parameters.
1.483 + */
1.484 + List<Type> readTypeParams(int i) {
1.485 + int index = poolIdx[i];
1.486 + return sigToTypeParams(buf, index + 3, getChar(index + 1));
1.487 + }
1.488 +
1.489 + /** Read class entry.
1.490 + */
1.491 + ClassSymbol readClassSymbol(int i) {
1.492 + return (ClassSymbol) (readPool(i));
1.493 + }
1.494 +
1.495 + /** Read name.
1.496 + */
1.497 + Name readName(int i) {
1.498 + return (Name) (readPool(i));
1.499 + }
1.500 +
1.501 +/************************************************************************
1.502 + * Reading Types
1.503 + ***********************************************************************/
1.504 +
1.505 + /** The unread portion of the currently read type is
1.506 + * signature[sigp..siglimit-1].
1.507 + */
1.508 + byte[] signature;
1.509 + int sigp;
1.510 + int siglimit;
1.511 + boolean sigEnterPhase = false;
1.512 +
1.513 + /** Convert signature to type, where signature is a name.
1.514 + */
1.515 + Type sigToType(Name sig) {
1.516 + return sig == null
1.517 + ? null
1.518 + : sigToType(sig.table.names, sig.index, sig.len);
1.519 + }
1.520 +
1.521 + /** Convert signature to type, where signature is a byte array segment.
1.522 + */
1.523 + Type sigToType(byte[] sig, int offset, int len) {
1.524 + signature = sig;
1.525 + sigp = offset;
1.526 + siglimit = offset + len;
1.527 + return sigToType();
1.528 + }
1.529 +
1.530 + /** Convert signature to type, where signature is implicit.
1.531 + */
1.532 + Type sigToType() {
1.533 + switch ((char) signature[sigp]) {
1.534 + case 'T':
1.535 + sigp++;
1.536 + int start = sigp;
1.537 + while (signature[sigp] != ';') sigp++;
1.538 + sigp++;
1.539 + return sigEnterPhase
1.540 + ? Type.noType
1.541 + : findTypeVar(names.fromUtf(signature, start, sigp - 1 - start));
1.542 + case '+': {
1.543 + sigp++;
1.544 + Type t = sigToType();
1.545 + return new WildcardType(t, BoundKind.EXTENDS,
1.546 + syms.boundClass);
1.547 + }
1.548 + case '*':
1.549 + sigp++;
1.550 + return new WildcardType(syms.objectType, BoundKind.UNBOUND,
1.551 + syms.boundClass);
1.552 + case '-': {
1.553 + sigp++;
1.554 + Type t = sigToType();
1.555 + return new WildcardType(t, BoundKind.SUPER,
1.556 + syms.boundClass);
1.557 + }
1.558 + case 'B':
1.559 + sigp++;
1.560 + return syms.byteType;
1.561 + case 'C':
1.562 + sigp++;
1.563 + return syms.charType;
1.564 + case 'D':
1.565 + sigp++;
1.566 + return syms.doubleType;
1.567 + case 'F':
1.568 + sigp++;
1.569 + return syms.floatType;
1.570 + case 'I':
1.571 + sigp++;
1.572 + return syms.intType;
1.573 + case 'J':
1.574 + sigp++;
1.575 + return syms.longType;
1.576 + case 'L':
1.577 + {
1.578 + // int oldsigp = sigp;
1.579 + Type t = classSigToType();
1.580 + if (sigp < siglimit && signature[sigp] == '.')
1.581 + throw badClassFile("deprecated inner class signature syntax " +
1.582 + "(please recompile from source)");
1.583 + /*
1.584 + System.err.println(" decoded " +
1.585 + new String(signature, oldsigp, sigp-oldsigp) +
1.586 + " => " + t + " outer " + t.outer());
1.587 + */
1.588 + return t;
1.589 + }
1.590 + case 'S':
1.591 + sigp++;
1.592 + return syms.shortType;
1.593 + case 'V':
1.594 + sigp++;
1.595 + return syms.voidType;
1.596 + case 'Z':
1.597 + sigp++;
1.598 + return syms.booleanType;
1.599 + case '[':
1.600 + sigp++;
1.601 + return new ArrayType(sigToType(), syms.arrayClass);
1.602 + case '(':
1.603 + sigp++;
1.604 + List<Type> argtypes = sigToTypes(')');
1.605 + Type restype = sigToType();
1.606 + List<Type> thrown = List.nil();
1.607 + while (signature[sigp] == '^') {
1.608 + sigp++;
1.609 + thrown = thrown.prepend(sigToType());
1.610 + }
1.611 + return new MethodType(argtypes,
1.612 + restype,
1.613 + thrown.reverse(),
1.614 + syms.methodClass);
1.615 + case '<':
1.616 + typevars = typevars.dup(currentOwner);
1.617 + Type poly = new ForAll(sigToTypeParams(), sigToType());
1.618 + typevars = typevars.leave();
1.619 + return poly;
1.620 + default:
1.621 + throw badClassFile("bad.signature",
1.622 + Convert.utf2string(signature, sigp, 10));
1.623 + }
1.624 + }
1.625 +
1.626 + byte[] signatureBuffer = new byte[0];
1.627 + int sbp = 0;
1.628 + /** Convert class signature to type, where signature is implicit.
1.629 + */
1.630 + Type classSigToType() {
1.631 + if (signature[sigp] != 'L')
1.632 + throw badClassFile("bad.class.signature",
1.633 + Convert.utf2string(signature, sigp, 10));
1.634 + sigp++;
1.635 + Type outer = Type.noType;
1.636 + int startSbp = sbp;
1.637 +
1.638 + while (true) {
1.639 + final byte c = signature[sigp++];
1.640 + switch (c) {
1.641 +
1.642 + case ';': { // end
1.643 + ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
1.644 + startSbp,
1.645 + sbp - startSbp));
1.646 + if (outer == Type.noType)
1.647 + outer = t.erasure(types);
1.648 + else
1.649 + outer = new ClassType(outer, List.<Type>nil(), t);
1.650 + sbp = startSbp;
1.651 + return outer;
1.652 + }
1.653 +
1.654 + case '<': // generic arguments
1.655 + ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
1.656 + startSbp,
1.657 + sbp - startSbp));
1.658 + outer = new ClassType(outer, sigToTypes('>'), t) {
1.659 + boolean completed = false;
1.660 + public Type getEnclosingType() {
1.661 + if (!completed) {
1.662 + completed = true;
1.663 + tsym.complete();
1.664 + Type enclosingType = tsym.type.getEnclosingType();
1.665 + if (enclosingType != Type.noType) {
1.666 + List<Type> typeArgs =
1.667 + super.getEnclosingType().allparams();
1.668 + List<Type> typeParams =
1.669 + enclosingType.allparams();
1.670 + if (typeParams.length() != typeArgs.length()) {
1.671 + // no "rare" types
1.672 + super.setEnclosingType(types.erasure(enclosingType));
1.673 + } else {
1.674 + super.setEnclosingType(types.subst(enclosingType,
1.675 + typeParams,
1.676 + typeArgs));
1.677 + }
1.678 + } else {
1.679 + super.setEnclosingType(Type.noType);
1.680 + }
1.681 + }
1.682 + return super.getEnclosingType();
1.683 + }
1.684 + public void setEnclosingType(Type outer) {
1.685 + throw new UnsupportedOperationException();
1.686 + }
1.687 + };
1.688 + switch (signature[sigp++]) {
1.689 + case ';':
1.690 + if (sigp < signature.length && signature[sigp] == '.') {
1.691 + // support old-style GJC signatures
1.692 + // The signature produced was
1.693 + // Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>;
1.694 + // rather than say
1.695 + // Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>;
1.696 + // so we skip past ".Lfoo/Outer$"
1.697 + sigp += (sbp - startSbp) + // "foo/Outer"
1.698 + 3; // ".L" and "$"
1.699 + signatureBuffer[sbp++] = (byte)'$';
1.700 + break;
1.701 + } else {
1.702 + sbp = startSbp;
1.703 + return outer;
1.704 + }
1.705 + case '.':
1.706 + signatureBuffer[sbp++] = (byte)'$';
1.707 + break;
1.708 + default:
1.709 + throw new AssertionError(signature[sigp-1]);
1.710 + }
1.711 + continue;
1.712 +
1.713 + case '.':
1.714 + signatureBuffer[sbp++] = (byte)'$';
1.715 + continue;
1.716 + case '/':
1.717 + signatureBuffer[sbp++] = (byte)'.';
1.718 + continue;
1.719 + default:
1.720 + signatureBuffer[sbp++] = c;
1.721 + continue;
1.722 + }
1.723 + }
1.724 + }
1.725 +
1.726 + /** Convert (implicit) signature to list of types
1.727 + * until `terminator' is encountered.
1.728 + */
1.729 + List<Type> sigToTypes(char terminator) {
1.730 + List<Type> head = List.of(null);
1.731 + List<Type> tail = head;
1.732 + while (signature[sigp] != terminator)
1.733 + tail = tail.setTail(List.of(sigToType()));
1.734 + sigp++;
1.735 + return head.tail;
1.736 + }
1.737 +
1.738 + /** Convert signature to type parameters, where signature is a name.
1.739 + */
1.740 + List<Type> sigToTypeParams(Name name) {
1.741 + return sigToTypeParams(name.table.names, name.index, name.len);
1.742 + }
1.743 +
1.744 + /** Convert signature to type parameters, where signature is a byte
1.745 + * array segment.
1.746 + */
1.747 + List<Type> sigToTypeParams(byte[] sig, int offset, int len) {
1.748 + signature = sig;
1.749 + sigp = offset;
1.750 + siglimit = offset + len;
1.751 + return sigToTypeParams();
1.752 + }
1.753 +
1.754 + /** Convert signature to type parameters, where signature is implicit.
1.755 + */
1.756 + List<Type> sigToTypeParams() {
1.757 + List<Type> tvars = List.nil();
1.758 + if (signature[sigp] == '<') {
1.759 + sigp++;
1.760 + int start = sigp;
1.761 + sigEnterPhase = true;
1.762 + while (signature[sigp] != '>')
1.763 + tvars = tvars.prepend(sigToTypeParam());
1.764 + sigEnterPhase = false;
1.765 + sigp = start;
1.766 + while (signature[sigp] != '>')
1.767 + sigToTypeParam();
1.768 + sigp++;
1.769 + }
1.770 + return tvars.reverse();
1.771 + }
1.772 +
1.773 + /** Convert (implicit) signature to type parameter.
1.774 + */
1.775 + Type sigToTypeParam() {
1.776 + int start = sigp;
1.777 + while (signature[sigp] != ':') sigp++;
1.778 + Name name = names.fromUtf(signature, start, sigp - start);
1.779 + TypeVar tvar;
1.780 + if (sigEnterPhase) {
1.781 + tvar = new TypeVar(name, currentOwner, syms.botType);
1.782 + typevars.enter(tvar.tsym);
1.783 + } else {
1.784 + tvar = (TypeVar)findTypeVar(name);
1.785 + }
1.786 + List<Type> bounds = List.nil();
1.787 + Type st = null;
1.788 + if (signature[sigp] == ':' && signature[sigp+1] == ':') {
1.789 + sigp++;
1.790 + st = syms.objectType;
1.791 + }
1.792 + while (signature[sigp] == ':') {
1.793 + sigp++;
1.794 + bounds = bounds.prepend(sigToType());
1.795 + }
1.796 + if (!sigEnterPhase) {
1.797 + types.setBounds(tvar, bounds.reverse(), st);
1.798 + }
1.799 + return tvar;
1.800 + }
1.801 +
1.802 + /** Find type variable with given name in `typevars' scope.
1.803 + */
1.804 + Type findTypeVar(Name name) {
1.805 + Scope.Entry e = typevars.lookup(name);
1.806 + if (e.scope != null) {
1.807 + return e.sym.type;
1.808 + } else {
1.809 + if (readingClassAttr) {
1.810 + // While reading the class attribute, the supertypes
1.811 + // might refer to a type variable from an enclosing element
1.812 + // (method or class).
1.813 + // If the type variable is defined in the enclosing class,
1.814 + // we can actually find it in
1.815 + // currentOwner.owner.type.getTypeArguments()
1.816 + // However, until we have read the enclosing method attribute
1.817 + // we don't know for sure if this owner is correct. It could
1.818 + // be a method and there is no way to tell before reading the
1.819 + // enclosing method attribute.
1.820 + TypeVar t = new TypeVar(name, currentOwner, syms.botType);
1.821 + missingTypeVariables = missingTypeVariables.prepend(t);
1.822 + // System.err.println("Missing type var " + name);
1.823 + return t;
1.824 + }
1.825 + throw badClassFile("undecl.type.var", name);
1.826 + }
1.827 + }
1.828 +
1.829 +/************************************************************************
1.830 + * Reading Attributes
1.831 + ***********************************************************************/
1.832 +
1.833 + /** Report unrecognized attribute.
1.834 + */
1.835 + void unrecognized(Name attrName) {
1.836 + if (checkClassFile)
1.837 + printCCF("ccf.unrecognized.attribute", attrName);
1.838 + }
1.839 +
1.840 + /** Read member attribute.
1.841 + */
1.842 + void readMemberAttr(Symbol sym, Name attrName, int attrLen) {
1.843 + //- System.err.println(" z " + sym + ", " + attrName + ", " + attrLen);
1.844 + if (attrName == names.ConstantValue) {
1.845 + Object v = readPool(nextChar());
1.846 + // Ignore ConstantValue attribute if field not final.
1.847 + if ((sym.flags() & FINAL) != 0)
1.848 + ((VarSymbol)sym).setData(v);
1.849 + } else if (attrName == names.Code) {
1.850 + if (readAllOfClassFile || saveParameterNames)
1.851 + ((MethodSymbol)sym).code = readCode(sym);
1.852 + else
1.853 + bp = bp + attrLen;
1.854 + } else if (attrName == names.Exceptions) {
1.855 + int nexceptions = nextChar();
1.856 + List<Type> thrown = List.nil();
1.857 + for (int j = 0; j < nexceptions; j++)
1.858 + thrown = thrown.prepend(readClassSymbol(nextChar()).type);
1.859 + if (sym.type.getThrownTypes().isEmpty())
1.860 + sym.type.asMethodType().thrown = thrown.reverse();
1.861 + } else if (attrName == names.Synthetic) {
1.862 + // bridge methods are visible when generics not enabled
1.863 + if (allowGenerics || (sym.flags_field & BRIDGE) == 0)
1.864 + sym.flags_field |= SYNTHETIC;
1.865 + } else if (attrName == names.Bridge) {
1.866 + sym.flags_field |= BRIDGE;
1.867 + if (!allowGenerics)
1.868 + sym.flags_field &= ~SYNTHETIC;
1.869 + } else if (attrName == names.Deprecated) {
1.870 + sym.flags_field |= DEPRECATED;
1.871 + } else if (attrName == names.Varargs) {
1.872 + if (allowVarargs) sym.flags_field |= VARARGS;
1.873 + } else if (attrName == names.Annotation) {
1.874 + if (allowAnnotations) sym.flags_field |= ANNOTATION;
1.875 + } else if (attrName == names.Enum) {
1.876 + sym.flags_field |= ENUM;
1.877 + } else if (allowGenerics && attrName == names.Signature) {
1.878 + List<Type> thrown = sym.type.getThrownTypes();
1.879 + sym.type = readType(nextChar());
1.880 + //- System.err.println(" # " + sym.type);
1.881 + if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty())
1.882 + sym.type.asMethodType().thrown = thrown;
1.883 + } else if (attrName == names.RuntimeVisibleAnnotations) {
1.884 + attachAnnotations(sym);
1.885 + } else if (attrName == names.RuntimeInvisibleAnnotations) {
1.886 + attachAnnotations(sym);
1.887 + } else if (attrName == names.RuntimeVisibleParameterAnnotations) {
1.888 + attachParameterAnnotations(sym);
1.889 + } else if (attrName == names.RuntimeInvisibleParameterAnnotations) {
1.890 + attachParameterAnnotations(sym);
1.891 + } else if (attrName == names.LocalVariableTable) {
1.892 + int newbp = bp + attrLen;
1.893 + if (saveParameterNames) {
1.894 + // pick up parameter names from the variable table
1.895 + List<Name> parameterNames = List.nil();
1.896 + int firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
1.897 + int endParam = firstParam + Code.width(sym.type.getParameterTypes());
1.898 + int numEntries = nextChar();
1.899 + for (int i=0; i<numEntries; i++) {
1.900 + int start_pc = nextChar();
1.901 + int length = nextChar();
1.902 + int nameIndex = nextChar();
1.903 + int sigIndex = nextChar();
1.904 + int register = nextChar();
1.905 + if (start_pc == 0 &&
1.906 + firstParam <= register &&
1.907 + register < endParam) {
1.908 + int index = firstParam;
1.909 + for (Type t : sym.type.getParameterTypes()) {
1.910 + if (index == register) {
1.911 + parameterNames = parameterNames.prepend(readName(nameIndex));
1.912 + break;
1.913 + }
1.914 + index += Code.width(t);
1.915 + }
1.916 + }
1.917 + }
1.918 + parameterNames = parameterNames.reverse();
1.919 + ((MethodSymbol)sym).savedParameterNames = parameterNames;
1.920 + }
1.921 + bp = newbp;
1.922 + } else if (attrName == names.AnnotationDefault) {
1.923 + attachAnnotationDefault(sym);
1.924 + } else if (attrName == names.EnclosingMethod) {
1.925 + int newbp = bp + attrLen;
1.926 + readEnclosingMethodAttr(sym);
1.927 + bp = newbp;
1.928 + } else {
1.929 + unrecognized(attrName);
1.930 + bp = bp + attrLen;
1.931 + }
1.932 + }
1.933 +
1.934 + void readEnclosingMethodAttr(Symbol sym) {
1.935 + // sym is a nested class with an "Enclosing Method" attribute
1.936 + // remove sym from it's current owners scope and place it in
1.937 + // the scope specified by the attribute
1.938 + sym.owner.members().remove(sym);
1.939 + ClassSymbol self = (ClassSymbol)sym;
1.940 + ClassSymbol c = readClassSymbol(nextChar());
1.941 + NameAndType nt = (NameAndType)readPool(nextChar());
1.942 +
1.943 + MethodSymbol m = findMethod(nt, c.members_field, self.flags());
1.944 + if (nt != null && m == null)
1.945 + throw badClassFile("bad.enclosing.method", self);
1.946 +
1.947 + self.name = simpleBinaryName(self.flatname, c.flatname) ;
1.948 + self.owner = m != null ? m : c;
1.949 + if (self.name.len == 0)
1.950 + self.fullname = null;
1.951 + else
1.952 + self.fullname = ClassSymbol.formFullName(self.name, self.owner);
1.953 +
1.954 + if (m != null) {
1.955 + ((ClassType)sym.type).setEnclosingType(m.type);
1.956 + } else if ((self.flags_field & STATIC) == 0) {
1.957 + ((ClassType)sym.type).setEnclosingType(c.type);
1.958 + } else {
1.959 + ((ClassType)sym.type).setEnclosingType(Type.noType);
1.960 + }
1.961 + enterTypevars(self);
1.962 + if (!missingTypeVariables.isEmpty()) {
1.963 + ListBuffer<Type> typeVars = new ListBuffer<Type>();
1.964 + for (Type typevar : missingTypeVariables) {
1.965 + typeVars.append(findTypeVar(typevar.tsym.name));
1.966 + }
1.967 + foundTypeVariables = typeVars.toList();
1.968 + } else {
1.969 + foundTypeVariables = List.nil();
1.970 + }
1.971 + }
1.972 +
1.973 + // See java.lang.Class
1.974 + private Name simpleBinaryName(Name self, Name enclosing) {
1.975 + String simpleBinaryName = self.toString().substring(enclosing.toString().length());
1.976 + if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$')
1.977 + throw badClassFile("bad.enclosing.method", self);
1.978 + int index = 1;
1.979 + while (index < simpleBinaryName.length() &&
1.980 + isAsciiDigit(simpleBinaryName.charAt(index)))
1.981 + index++;
1.982 + return names.fromString(simpleBinaryName.substring(index));
1.983 + }
1.984 +
1.985 + private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) {
1.986 + if (nt == null)
1.987 + return null;
1.988 +
1.989 + MethodType type = nt.type.asMethodType();
1.990 +
1.991 + for (Scope.Entry e = scope.lookup(nt.name); e.scope != null; e = e.next())
1.992 + if (e.sym.kind == MTH && isSameBinaryType(e.sym.type.asMethodType(), type))
1.993 + return (MethodSymbol)e.sym;
1.994 +
1.995 + if (nt.name != names.init)
1.996 + // not a constructor
1.997 + return null;
1.998 + if ((flags & INTERFACE) != 0)
1.999 + // no enclosing instance
1.1000 + return null;
1.1001 + if (nt.type.getParameterTypes().isEmpty())
1.1002 + // no parameters
1.1003 + return null;
1.1004 +
1.1005 + // A constructor of an inner class.
1.1006 + // Remove the first argument (the enclosing instance)
1.1007 + nt.type = new MethodType(nt.type.getParameterTypes().tail,
1.1008 + nt.type.getReturnType(),
1.1009 + nt.type.getThrownTypes(),
1.1010 + syms.methodClass);
1.1011 + // Try searching again
1.1012 + return findMethod(nt, scope, flags);
1.1013 + }
1.1014 +
1.1015 + /** Similar to Types.isSameType but avoids completion */
1.1016 + private boolean isSameBinaryType(MethodType mt1, MethodType mt2) {
1.1017 + List<Type> types1 = types.erasure(mt1.getParameterTypes())
1.1018 + .prepend(types.erasure(mt1.getReturnType()));
1.1019 + List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType());
1.1020 + while (!types1.isEmpty() && !types2.isEmpty()) {
1.1021 + if (types1.head.tsym != types2.head.tsym)
1.1022 + return false;
1.1023 + types1 = types1.tail;
1.1024 + types2 = types2.tail;
1.1025 + }
1.1026 + return types1.isEmpty() && types2.isEmpty();
1.1027 + }
1.1028 +
1.1029 + /**
1.1030 + * Character.isDigit answers <tt>true</tt> to some non-ascii
1.1031 + * digits. This one does not. <b>copied from java.lang.Class</b>
1.1032 + */
1.1033 + private static boolean isAsciiDigit(char c) {
1.1034 + return '0' <= c && c <= '9';
1.1035 + }
1.1036 +
1.1037 + /** Read member attributes.
1.1038 + */
1.1039 + void readMemberAttrs(Symbol sym) {
1.1040 + char ac = nextChar();
1.1041 + for (int i = 0; i < ac; i++) {
1.1042 + Name attrName = readName(nextChar());
1.1043 + int attrLen = nextInt();
1.1044 + readMemberAttr(sym, attrName, attrLen);
1.1045 + }
1.1046 + }
1.1047 +
1.1048 + /** Read class attribute.
1.1049 + */
1.1050 + void readClassAttr(ClassSymbol c, Name attrName, int attrLen) {
1.1051 + if (attrName == names.SourceFile) {
1.1052 + Name n = readName(nextChar());
1.1053 + c.sourcefile = new SourceFileObject(n);
1.1054 + } else if (attrName == names.InnerClasses) {
1.1055 + readInnerClasses(c);
1.1056 + } else if (allowGenerics && attrName == names.Signature) {
1.1057 + readingClassAttr = true;
1.1058 + try {
1.1059 + ClassType ct1 = (ClassType)c.type;
1.1060 + assert c == currentOwner;
1.1061 + ct1.typarams_field = readTypeParams(nextChar());
1.1062 + ct1.supertype_field = sigToType();
1.1063 + ListBuffer<Type> is = new ListBuffer<Type>();
1.1064 + while (sigp != siglimit) is.append(sigToType());
1.1065 + ct1.interfaces_field = is.toList();
1.1066 + } finally {
1.1067 + readingClassAttr = false;
1.1068 + }
1.1069 + } else {
1.1070 + readMemberAttr(c, attrName, attrLen);
1.1071 + }
1.1072 + }
1.1073 + private boolean readingClassAttr = false;
1.1074 + private List<Type> missingTypeVariables = List.nil();
1.1075 + private List<Type> foundTypeVariables = List.nil();
1.1076 +
1.1077 + /** Read class attributes.
1.1078 + */
1.1079 + void readClassAttrs(ClassSymbol c) {
1.1080 + char ac = nextChar();
1.1081 + for (int i = 0; i < ac; i++) {
1.1082 + Name attrName = readName(nextChar());
1.1083 + int attrLen = nextInt();
1.1084 + readClassAttr(c, attrName, attrLen);
1.1085 + }
1.1086 + }
1.1087 +
1.1088 + /** Read code block.
1.1089 + */
1.1090 + Code readCode(Symbol owner) {
1.1091 + nextChar(); // max_stack
1.1092 + nextChar(); // max_locals
1.1093 + final int code_length = nextInt();
1.1094 + bp += code_length;
1.1095 + final char exception_table_length = nextChar();
1.1096 + bp += exception_table_length * 8;
1.1097 + readMemberAttrs(owner);
1.1098 + return null;
1.1099 + }
1.1100 +
1.1101 +/************************************************************************
1.1102 + * Reading Java-language annotations
1.1103 + ***********************************************************************/
1.1104 +
1.1105 + /** Attach annotations.
1.1106 + */
1.1107 + void attachAnnotations(final Symbol sym) {
1.1108 + int numAttributes = nextChar();
1.1109 + if (numAttributes != 0) {
1.1110 + ListBuffer<CompoundAnnotationProxy> proxies =
1.1111 + new ListBuffer<CompoundAnnotationProxy>();
1.1112 + for (int i = 0; i<numAttributes; i++) {
1.1113 + CompoundAnnotationProxy proxy = readCompoundAnnotation();
1.1114 + if (proxy.type.tsym == syms.proprietaryType.tsym)
1.1115 + sym.flags_field |= PROPRIETARY;
1.1116 + else
1.1117 + proxies.append(proxy);
1.1118 + }
1.1119 + annotate.later(new AnnotationCompleter(sym, proxies.toList()));
1.1120 + }
1.1121 + }
1.1122 +
1.1123 + /** Attach parameter annotations.
1.1124 + */
1.1125 + void attachParameterAnnotations(final Symbol method) {
1.1126 + final MethodSymbol meth = (MethodSymbol)method;
1.1127 + int numParameters = buf[bp++] & 0xFF;
1.1128 + List<VarSymbol> parameters = meth.params();
1.1129 + int pnum = 0;
1.1130 + while (parameters.tail != null) {
1.1131 + attachAnnotations(parameters.head);
1.1132 + parameters = parameters.tail;
1.1133 + pnum++;
1.1134 + }
1.1135 + if (pnum != numParameters) {
1.1136 + throw badClassFile("bad.runtime.invisible.param.annotations", meth);
1.1137 + }
1.1138 + }
1.1139 +
1.1140 + /** Attach the default value for an annotation element.
1.1141 + */
1.1142 + void attachAnnotationDefault(final Symbol sym) {
1.1143 + final MethodSymbol meth = (MethodSymbol)sym; // only on methods
1.1144 + final Attribute value = readAttributeValue();
1.1145 + annotate.later(new AnnotationDefaultCompleter(meth, value));
1.1146 + }
1.1147 +
1.1148 + Type readTypeOrClassSymbol(int i) {
1.1149 + // support preliminary jsr175-format class files
1.1150 + if (buf[poolIdx[i]] == CONSTANT_Class)
1.1151 + return readClassSymbol(i).type;
1.1152 + return readType(i);
1.1153 + }
1.1154 + Type readEnumType(int i) {
1.1155 + // support preliminary jsr175-format class files
1.1156 + int index = poolIdx[i];
1.1157 + int length = getChar(index + 1);
1.1158 + if (buf[index + length + 2] != ';')
1.1159 + return enterClass(readName(i)).type;
1.1160 + return readType(i);
1.1161 + }
1.1162 +
1.1163 + CompoundAnnotationProxy readCompoundAnnotation() {
1.1164 + Type t = readTypeOrClassSymbol(nextChar());
1.1165 + int numFields = nextChar();
1.1166 + ListBuffer<Pair<Name,Attribute>> pairs =
1.1167 + new ListBuffer<Pair<Name,Attribute>>();
1.1168 + for (int i=0; i<numFields; i++) {
1.1169 + Name name = readName(nextChar());
1.1170 + Attribute value = readAttributeValue();
1.1171 + pairs.append(new Pair<Name,Attribute>(name, value));
1.1172 + }
1.1173 + return new CompoundAnnotationProxy(t, pairs.toList());
1.1174 + }
1.1175 +
1.1176 + Attribute readAttributeValue() {
1.1177 + char c = (char) buf[bp++];
1.1178 + switch (c) {
1.1179 + case 'B':
1.1180 + return new Attribute.Constant(syms.byteType, readPool(nextChar()));
1.1181 + case 'C':
1.1182 + return new Attribute.Constant(syms.charType, readPool(nextChar()));
1.1183 + case 'D':
1.1184 + return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
1.1185 + case 'F':
1.1186 + return new Attribute.Constant(syms.floatType, readPool(nextChar()));
1.1187 + case 'I':
1.1188 + return new Attribute.Constant(syms.intType, readPool(nextChar()));
1.1189 + case 'J':
1.1190 + return new Attribute.Constant(syms.longType, readPool(nextChar()));
1.1191 + case 'S':
1.1192 + return new Attribute.Constant(syms.shortType, readPool(nextChar()));
1.1193 + case 'Z':
1.1194 + return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
1.1195 + case 's':
1.1196 + return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
1.1197 + case 'e':
1.1198 + return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
1.1199 + case 'c':
1.1200 + return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
1.1201 + case '[': {
1.1202 + int n = nextChar();
1.1203 + ListBuffer<Attribute> l = new ListBuffer<Attribute>();
1.1204 + for (int i=0; i<n; i++)
1.1205 + l.append(readAttributeValue());
1.1206 + return new ArrayAttributeProxy(l.toList());
1.1207 + }
1.1208 + case '@':
1.1209 + return readCompoundAnnotation();
1.1210 + default:
1.1211 + throw new AssertionError("unknown annotation tag '" + c + "'");
1.1212 + }
1.1213 + }
1.1214 +
1.1215 + interface ProxyVisitor extends Attribute.Visitor {
1.1216 + void visitEnumAttributeProxy(EnumAttributeProxy proxy);
1.1217 + void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
1.1218 + void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
1.1219 + }
1.1220 +
1.1221 + static class EnumAttributeProxy extends Attribute {
1.1222 + Type enumType;
1.1223 + Name enumerator;
1.1224 + public EnumAttributeProxy(Type enumType, Name enumerator) {
1.1225 + super(null);
1.1226 + this.enumType = enumType;
1.1227 + this.enumerator = enumerator;
1.1228 + }
1.1229 + public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
1.1230 + public String toString() {
1.1231 + return "/*proxy enum*/" + enumType + "." + enumerator;
1.1232 + }
1.1233 + }
1.1234 +
1.1235 + static class ArrayAttributeProxy extends Attribute {
1.1236 + List<Attribute> values;
1.1237 + ArrayAttributeProxy(List<Attribute> values) {
1.1238 + super(null);
1.1239 + this.values = values;
1.1240 + }
1.1241 + public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
1.1242 + public String toString() {
1.1243 + return "{" + values + "}";
1.1244 + }
1.1245 + }
1.1246 +
1.1247 + /** A temporary proxy representing a compound attribute.
1.1248 + */
1.1249 + static class CompoundAnnotationProxy extends Attribute {
1.1250 + final List<Pair<Name,Attribute>> values;
1.1251 + public CompoundAnnotationProxy(Type type,
1.1252 + List<Pair<Name,Attribute>> values) {
1.1253 + super(type);
1.1254 + this.values = values;
1.1255 + }
1.1256 + public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
1.1257 + public String toString() {
1.1258 + StringBuffer buf = new StringBuffer();
1.1259 + buf.append("@");
1.1260 + buf.append(type.tsym.getQualifiedName());
1.1261 + buf.append("/*proxy*/{");
1.1262 + boolean first = true;
1.1263 + for (List<Pair<Name,Attribute>> v = values;
1.1264 + v.nonEmpty(); v = v.tail) {
1.1265 + Pair<Name,Attribute> value = v.head;
1.1266 + if (!first) buf.append(",");
1.1267 + first = false;
1.1268 + buf.append(value.fst);
1.1269 + buf.append("=");
1.1270 + buf.append(value.snd);
1.1271 + }
1.1272 + buf.append("}");
1.1273 + return buf.toString();
1.1274 + }
1.1275 + }
1.1276 +
1.1277 + class AnnotationDeproxy implements ProxyVisitor {
1.1278 + private ClassSymbol requestingOwner = currentOwner.kind == MTH
1.1279 + ? currentOwner.enclClass() : (ClassSymbol)currentOwner;
1.1280 +
1.1281 + List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
1.1282 + // also must fill in types!!!!
1.1283 + ListBuffer<Attribute.Compound> buf =
1.1284 + new ListBuffer<Attribute.Compound>();
1.1285 + for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
1.1286 + buf.append(deproxyCompound(l.head));
1.1287 + }
1.1288 + return buf.toList();
1.1289 + }
1.1290 +
1.1291 + Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
1.1292 + ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf =
1.1293 + new ListBuffer<Pair<Symbol.MethodSymbol,Attribute>>();
1.1294 + for (List<Pair<Name,Attribute>> l = a.values;
1.1295 + l.nonEmpty();
1.1296 + l = l.tail) {
1.1297 + MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
1.1298 + buf.append(new Pair<Symbol.MethodSymbol,Attribute>
1.1299 + (meth, deproxy(meth.type.getReturnType(), l.head.snd)));
1.1300 + }
1.1301 + return new Attribute.Compound(a.type, buf.toList());
1.1302 + }
1.1303 +
1.1304 + MethodSymbol findAccessMethod(Type container, Name name) {
1.1305 + CompletionFailure failure = null;
1.1306 + try {
1.1307 + for (Scope.Entry e = container.tsym.members().lookup(name);
1.1308 + e.scope != null;
1.1309 + e = e.next()) {
1.1310 + Symbol sym = e.sym;
1.1311 + if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
1.1312 + return (MethodSymbol) sym;
1.1313 + }
1.1314 + } catch (CompletionFailure ex) {
1.1315 + failure = ex;
1.1316 + }
1.1317 + // The method wasn't found: emit a warning and recover
1.1318 + JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
1.1319 + try {
1.1320 + if (failure == null) {
1.1321 + log.warning("annotation.method.not.found",
1.1322 + container,
1.1323 + name);
1.1324 + } else {
1.1325 + log.warning("annotation.method.not.found.reason",
1.1326 + container,
1.1327 + name,
1.1328 + failure.getMessage());
1.1329 + }
1.1330 + } finally {
1.1331 + log.useSource(prevSource);
1.1332 + }
1.1333 + // Construct a new method type and symbol. Use bottom
1.1334 + // type (typeof null) as return type because this type is
1.1335 + // a subtype of all reference types and can be converted
1.1336 + // to primitive types by unboxing.
1.1337 + MethodType mt = new MethodType(List.<Type>nil(),
1.1338 + syms.botType,
1.1339 + List.<Type>nil(),
1.1340 + syms.methodClass);
1.1341 + return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
1.1342 + }
1.1343 +
1.1344 + Attribute result;
1.1345 + Type type;
1.1346 + Attribute deproxy(Type t, Attribute a) {
1.1347 + Type oldType = type;
1.1348 + try {
1.1349 + type = t;
1.1350 + a.accept(this);
1.1351 + return result;
1.1352 + } finally {
1.1353 + type = oldType;
1.1354 + }
1.1355 + }
1.1356 +
1.1357 + // implement Attribute.Visitor below
1.1358 +
1.1359 + public void visitConstant(Attribute.Constant value) {
1.1360 + // assert value.type == type;
1.1361 + result = value;
1.1362 + }
1.1363 +
1.1364 + public void visitClass(Attribute.Class clazz) {
1.1365 + result = clazz;
1.1366 + }
1.1367 +
1.1368 + public void visitEnum(Attribute.Enum e) {
1.1369 + throw new AssertionError(); // shouldn't happen
1.1370 + }
1.1371 +
1.1372 + public void visitCompound(Attribute.Compound compound) {
1.1373 + throw new AssertionError(); // shouldn't happen
1.1374 + }
1.1375 +
1.1376 + public void visitArray(Attribute.Array array) {
1.1377 + throw new AssertionError(); // shouldn't happen
1.1378 + }
1.1379 +
1.1380 + public void visitError(Attribute.Error e) {
1.1381 + throw new AssertionError(); // shouldn't happen
1.1382 + }
1.1383 +
1.1384 + public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
1.1385 + // type.tsym.flatName() should == proxy.enumFlatName
1.1386 + TypeSymbol enumTypeSym = proxy.enumType.tsym;
1.1387 + VarSymbol enumerator = null;
1.1388 + for (Scope.Entry e = enumTypeSym.members().lookup(proxy.enumerator);
1.1389 + e.scope != null;
1.1390 + e = e.next()) {
1.1391 + if (e.sym.kind == VAR) {
1.1392 + enumerator = (VarSymbol)e.sym;
1.1393 + break;
1.1394 + }
1.1395 + }
1.1396 + if (enumerator == null) {
1.1397 + log.error("unknown.enum.constant",
1.1398 + currentClassFile, enumTypeSym, proxy.enumerator);
1.1399 + result = new Attribute.Error(enumTypeSym.type);
1.1400 + } else {
1.1401 + result = new Attribute.Enum(enumTypeSym.type, enumerator);
1.1402 + }
1.1403 + }
1.1404 +
1.1405 + public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
1.1406 + int length = proxy.values.length();
1.1407 + Attribute[] ats = new Attribute[length];
1.1408 + Type elemtype = types.elemtype(type);
1.1409 + int i = 0;
1.1410 + for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
1.1411 + ats[i++] = deproxy(elemtype, p.head);
1.1412 + }
1.1413 + result = new Attribute.Array(type, ats);
1.1414 + }
1.1415 +
1.1416 + public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
1.1417 + result = deproxyCompound(proxy);
1.1418 + }
1.1419 + }
1.1420 +
1.1421 + class AnnotationDefaultCompleter extends AnnotationDeproxy implements Annotate.Annotator {
1.1422 + final MethodSymbol sym;
1.1423 + final Attribute value;
1.1424 + final JavaFileObject classFile = currentClassFile;
1.1425 + public String toString() {
1.1426 + return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
1.1427 + }
1.1428 + AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
1.1429 + this.sym = sym;
1.1430 + this.value = value;
1.1431 + }
1.1432 + // implement Annotate.Annotator.enterAnnotation()
1.1433 + public void enterAnnotation() {
1.1434 + JavaFileObject previousClassFile = currentClassFile;
1.1435 + try {
1.1436 + currentClassFile = classFile;
1.1437 + sym.defaultValue = deproxy(sym.type.getReturnType(), value);
1.1438 + } finally {
1.1439 + currentClassFile = previousClassFile;
1.1440 + }
1.1441 + }
1.1442 + }
1.1443 +
1.1444 + class AnnotationCompleter extends AnnotationDeproxy implements Annotate.Annotator {
1.1445 + final Symbol sym;
1.1446 + final List<CompoundAnnotationProxy> l;
1.1447 + final JavaFileObject classFile;
1.1448 + public String toString() {
1.1449 + return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
1.1450 + }
1.1451 + AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
1.1452 + this.sym = sym;
1.1453 + this.l = l;
1.1454 + this.classFile = currentClassFile;
1.1455 + }
1.1456 + // implement Annotate.Annotator.enterAnnotation()
1.1457 + public void enterAnnotation() {
1.1458 + JavaFileObject previousClassFile = currentClassFile;
1.1459 + try {
1.1460 + currentClassFile = classFile;
1.1461 + List<Attribute.Compound> newList = deproxyCompoundList(l);
1.1462 + sym.attributes_field = ((sym.attributes_field == null)
1.1463 + ? newList
1.1464 + : newList.prependList(sym.attributes_field));
1.1465 + } finally {
1.1466 + currentClassFile = previousClassFile;
1.1467 + }
1.1468 + }
1.1469 + }
1.1470 +
1.1471 +
1.1472 +/************************************************************************
1.1473 + * Reading Symbols
1.1474 + ***********************************************************************/
1.1475 +
1.1476 + /** Read a field.
1.1477 + */
1.1478 + VarSymbol readField() {
1.1479 + long flags = adjustFieldFlags(nextChar());
1.1480 + Name name = readName(nextChar());
1.1481 + Type type = readType(nextChar());
1.1482 + VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
1.1483 + readMemberAttrs(v);
1.1484 + return v;
1.1485 + }
1.1486 +
1.1487 + /** Read a method.
1.1488 + */
1.1489 + MethodSymbol readMethod() {
1.1490 + long flags = adjustMethodFlags(nextChar());
1.1491 + Name name = readName(nextChar());
1.1492 + Type type = readType(nextChar());
1.1493 + if (name == names.init && currentOwner.hasOuterInstance()) {
1.1494 + // Sometimes anonymous classes don't have an outer
1.1495 + // instance, however, there is no reliable way to tell so
1.1496 + // we never strip this$n
1.1497 + if (currentOwner.name.len != 0)
1.1498 + type = new MethodType(type.getParameterTypes().tail,
1.1499 + type.getReturnType(),
1.1500 + type.getThrownTypes(),
1.1501 + syms.methodClass);
1.1502 + }
1.1503 + MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
1.1504 + Symbol prevOwner = currentOwner;
1.1505 + currentOwner = m;
1.1506 + try {
1.1507 + readMemberAttrs(m);
1.1508 + } finally {
1.1509 + currentOwner = prevOwner;
1.1510 + }
1.1511 + return m;
1.1512 + }
1.1513 +
1.1514 + /** Skip a field or method
1.1515 + */
1.1516 + void skipMember() {
1.1517 + bp = bp + 6;
1.1518 + char ac = nextChar();
1.1519 + for (int i = 0; i < ac; i++) {
1.1520 + bp = bp + 2;
1.1521 + int attrLen = nextInt();
1.1522 + bp = bp + attrLen;
1.1523 + }
1.1524 + }
1.1525 +
1.1526 + /** Enter type variables of this classtype and all enclosing ones in
1.1527 + * `typevars'.
1.1528 + */
1.1529 + protected void enterTypevars(Type t) {
1.1530 + if (t.getEnclosingType() != null && t.getEnclosingType().tag == CLASS)
1.1531 + enterTypevars(t.getEnclosingType());
1.1532 + for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
1.1533 + typevars.enter(xs.head.tsym);
1.1534 + }
1.1535 +
1.1536 + protected void enterTypevars(Symbol sym) {
1.1537 + if (sym.owner.kind == MTH) {
1.1538 + enterTypevars(sym.owner);
1.1539 + enterTypevars(sym.owner.owner);
1.1540 + }
1.1541 + enterTypevars(sym.type);
1.1542 + }
1.1543 +
1.1544 + /** Read contents of a given class symbol `c'. Both external and internal
1.1545 + * versions of an inner class are read.
1.1546 + */
1.1547 + void readClass(ClassSymbol c) {
1.1548 + ClassType ct = (ClassType)c.type;
1.1549 +
1.1550 + // allocate scope for members
1.1551 + c.members_field = new Scope(c);
1.1552 +
1.1553 + // prepare type variable table
1.1554 + typevars = typevars.dup(currentOwner);
1.1555 + if (ct.getEnclosingType().tag == CLASS) enterTypevars(ct.getEnclosingType());
1.1556 +
1.1557 + // read flags, or skip if this is an inner class
1.1558 + long flags = adjustClassFlags(nextChar());
1.1559 + if (c.owner.kind == PCK) c.flags_field = flags;
1.1560 +
1.1561 + // read own class name and check that it matches
1.1562 + ClassSymbol self = readClassSymbol(nextChar());
1.1563 + if (c != self)
1.1564 + throw badClassFile("class.file.wrong.class",
1.1565 + self.flatname);
1.1566 +
1.1567 + // class attributes must be read before class
1.1568 + // skip ahead to read class attributes
1.1569 + int startbp = bp;
1.1570 + nextChar();
1.1571 + char interfaceCount = nextChar();
1.1572 + bp += interfaceCount * 2;
1.1573 + char fieldCount = nextChar();
1.1574 + for (int i = 0; i < fieldCount; i++) skipMember();
1.1575 + char methodCount = nextChar();
1.1576 + for (int i = 0; i < methodCount; i++) skipMember();
1.1577 + readClassAttrs(c);
1.1578 +
1.1579 + if (readAllOfClassFile) {
1.1580 + for (int i = 1; i < poolObj.length; i++) readPool(i);
1.1581 + c.pool = new Pool(poolObj.length, poolObj);
1.1582 + }
1.1583 +
1.1584 + // reset and read rest of classinfo
1.1585 + bp = startbp;
1.1586 + int n = nextChar();
1.1587 + if (ct.supertype_field == null)
1.1588 + ct.supertype_field = (n == 0)
1.1589 + ? Type.noType
1.1590 + : readClassSymbol(n).erasure(types);
1.1591 + n = nextChar();
1.1592 + List<Type> is = List.nil();
1.1593 + for (int i = 0; i < n; i++) {
1.1594 + Type _inter = readClassSymbol(nextChar()).erasure(types);
1.1595 + is = is.prepend(_inter);
1.1596 + }
1.1597 + if (ct.interfaces_field == null)
1.1598 + ct.interfaces_field = is.reverse();
1.1599 +
1.1600 + if (fieldCount != nextChar()) assert false;
1.1601 + for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
1.1602 + if (methodCount != nextChar()) assert false;
1.1603 + for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
1.1604 +
1.1605 + typevars = typevars.leave();
1.1606 + }
1.1607 +
1.1608 + /** Read inner class info. For each inner/outer pair allocate a
1.1609 + * member class.
1.1610 + */
1.1611 + void readInnerClasses(ClassSymbol c) {
1.1612 + int n = nextChar();
1.1613 + for (int i = 0; i < n; i++) {
1.1614 + nextChar(); // skip inner class symbol
1.1615 + ClassSymbol outer = readClassSymbol(nextChar());
1.1616 + Name name = readName(nextChar());
1.1617 + if (name == null) name = names.empty;
1.1618 + long flags = adjustClassFlags(nextChar());
1.1619 + if (outer != null) { // we have a member class
1.1620 + if (name == names.empty)
1.1621 + name = names.one;
1.1622 + ClassSymbol member = enterClass(name, outer);
1.1623 + if ((flags & STATIC) == 0) {
1.1624 + ((ClassType)member.type).setEnclosingType(outer.type);
1.1625 + if (member.erasure_field != null)
1.1626 + ((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
1.1627 + }
1.1628 + if (c == outer) {
1.1629 + member.flags_field = flags;
1.1630 + enterMember(c, member);
1.1631 + }
1.1632 + }
1.1633 + }
1.1634 + }
1.1635 +
1.1636 + /** Read a class file.
1.1637 + */
1.1638 + private void readClassFile(ClassSymbol c) throws IOException {
1.1639 + int magic = nextInt();
1.1640 + if (magic != JAVA_MAGIC)
1.1641 + throw badClassFile("illegal.start.of.class.file");
1.1642 +
1.1643 + int minorVersion = nextChar();
1.1644 + int majorVersion = nextChar();
1.1645 + int maxMajor = Target.MAX().majorVersion;
1.1646 + int maxMinor = Target.MAX().minorVersion;
1.1647 + if (majorVersion > maxMajor ||
1.1648 + majorVersion * 1000 + minorVersion <
1.1649 + Target.MIN().majorVersion * 1000 + Target.MIN().minorVersion)
1.1650 + {
1.1651 + if (majorVersion == (maxMajor + 1))
1.1652 + log.warning("big.major.version",
1.1653 + currentClassFile,
1.1654 + majorVersion,
1.1655 + maxMajor);
1.1656 + else
1.1657 + throw badClassFile("wrong.version",
1.1658 + Integer.toString(majorVersion),
1.1659 + Integer.toString(minorVersion),
1.1660 + Integer.toString(maxMajor),
1.1661 + Integer.toString(maxMinor));
1.1662 + }
1.1663 + else if (checkClassFile &&
1.1664 + majorVersion == maxMajor &&
1.1665 + minorVersion > maxMinor)
1.1666 + {
1.1667 + printCCF("found.later.version",
1.1668 + Integer.toString(minorVersion));
1.1669 + }
1.1670 + indexPool();
1.1671 + if (signatureBuffer.length < bp) {
1.1672 + int ns = Integer.highestOneBit(bp) << 1;
1.1673 + signatureBuffer = new byte[ns];
1.1674 + }
1.1675 + readClass(c);
1.1676 + }
1.1677 +
1.1678 +/************************************************************************
1.1679 + * Adjusting flags
1.1680 + ***********************************************************************/
1.1681 +
1.1682 + long adjustFieldFlags(long flags) {
1.1683 + return flags;
1.1684 + }
1.1685 + long adjustMethodFlags(long flags) {
1.1686 + if ((flags & ACC_BRIDGE) != 0) {
1.1687 + flags &= ~ACC_BRIDGE;
1.1688 + flags |= BRIDGE;
1.1689 + if (!allowGenerics)
1.1690 + flags &= ~SYNTHETIC;
1.1691 + }
1.1692 + if ((flags & ACC_VARARGS) != 0) {
1.1693 + flags &= ~ACC_VARARGS;
1.1694 + flags |= VARARGS;
1.1695 + }
1.1696 + return flags;
1.1697 + }
1.1698 + long adjustClassFlags(long flags) {
1.1699 + return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
1.1700 + }
1.1701 +
1.1702 +/************************************************************************
1.1703 + * Loading Classes
1.1704 + ***********************************************************************/
1.1705 +
1.1706 + /** Define a new class given its name and owner.
1.1707 + */
1.1708 + public ClassSymbol defineClass(Name name, Symbol owner) {
1.1709 + ClassSymbol c = new ClassSymbol(0, name, owner);
1.1710 + if (owner.kind == PCK)
1.1711 + assert classes.get(c.flatname) == null : c;
1.1712 + c.completer = this;
1.1713 + return c;
1.1714 + }
1.1715 +
1.1716 + /** Create a new toplevel or member class symbol with given name
1.1717 + * and owner and enter in `classes' unless already there.
1.1718 + */
1.1719 + public ClassSymbol enterClass(Name name, TypeSymbol owner) {
1.1720 + Name flatname = TypeSymbol.formFlatName(name, owner);
1.1721 + ClassSymbol c = classes.get(flatname);
1.1722 + if (c == null) {
1.1723 + c = defineClass(name, owner);
1.1724 + classes.put(flatname, c);
1.1725 + } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) {
1.1726 + // reassign fields of classes that might have been loaded with
1.1727 + // their flat names.
1.1728 + c.owner.members().remove(c);
1.1729 + c.name = name;
1.1730 + c.owner = owner;
1.1731 + c.fullname = ClassSymbol.formFullName(name, owner);
1.1732 + }
1.1733 + return c;
1.1734 + }
1.1735 +
1.1736 + /**
1.1737 + * Creates a new toplevel class symbol with given flat name and
1.1738 + * given class (or source) file.
1.1739 + *
1.1740 + * @param flatName a fully qualified binary class name
1.1741 + * @param classFile the class file or compilation unit defining
1.1742 + * the class (may be {@code null})
1.1743 + * @return a newly created class symbol
1.1744 + * @throws AssertionError if the class symbol already exists
1.1745 + */
1.1746 + public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) {
1.1747 + ClassSymbol cs = classes.get(flatName);
1.1748 + if (cs != null) {
1.1749 + String msg = Log.format("%s: completer = %s; class file = %s; source file = %s",
1.1750 + cs.fullname,
1.1751 + cs.completer,
1.1752 + cs.classfile,
1.1753 + cs.sourcefile);
1.1754 + throw new AssertionError(msg);
1.1755 + }
1.1756 + Name packageName = Convert.packagePart(flatName);
1.1757 + PackageSymbol owner = packageName.isEmpty()
1.1758 + ? syms.unnamedPackage
1.1759 + : enterPackage(packageName);
1.1760 + cs = defineClass(Convert.shortName(flatName), owner);
1.1761 + cs.classfile = classFile;
1.1762 + classes.put(flatName, cs);
1.1763 + return cs;
1.1764 + }
1.1765 +
1.1766 + /** Create a new member or toplevel class symbol with given flat name
1.1767 + * and enter in `classes' unless already there.
1.1768 + */
1.1769 + public ClassSymbol enterClass(Name flatname) {
1.1770 + ClassSymbol c = classes.get(flatname);
1.1771 + if (c == null)
1.1772 + return enterClass(flatname, (JavaFileObject)null);
1.1773 + else
1.1774 + return c;
1.1775 + }
1.1776 +
1.1777 + private boolean suppressFlush = false;
1.1778 +
1.1779 + /** Completion for classes to be loaded. Before a class is loaded
1.1780 + * we make sure its enclosing class (if any) is loaded.
1.1781 + */
1.1782 + public void complete(Symbol sym) throws CompletionFailure {
1.1783 + if (sym.kind == TYP) {
1.1784 + ClassSymbol c = (ClassSymbol)sym;
1.1785 + c.members_field = new Scope.ErrorScope(c); // make sure it's always defined
1.1786 + boolean suppressFlush = this.suppressFlush;
1.1787 + this.suppressFlush = true;
1.1788 + try {
1.1789 + completeOwners(c.owner);
1.1790 + completeEnclosing(c);
1.1791 + } finally {
1.1792 + this.suppressFlush = suppressFlush;
1.1793 + }
1.1794 + fillIn(c);
1.1795 + } else if (sym.kind == PCK) {
1.1796 + PackageSymbol p = (PackageSymbol)sym;
1.1797 + try {
1.1798 + fillIn(p);
1.1799 + } catch (IOException ex) {
1.1800 + throw new CompletionFailure(sym, ex.getLocalizedMessage()).initCause(ex);
1.1801 + }
1.1802 + }
1.1803 + if (!filling && !suppressFlush)
1.1804 + annotate.flush(); // finish attaching annotations
1.1805 + }
1.1806 +
1.1807 + /** complete up through the enclosing package. */
1.1808 + private void completeOwners(Symbol o) {
1.1809 + if (o.kind != PCK) completeOwners(o.owner);
1.1810 + o.complete();
1.1811 + }
1.1812 +
1.1813 + /**
1.1814 + * Tries to complete lexically enclosing classes if c looks like a
1.1815 + * nested class. This is similar to completeOwners but handles
1.1816 + * the situation when a nested class is accessed directly as it is
1.1817 + * possible with the Tree API or javax.lang.model.*.
1.1818 + */
1.1819 + private void completeEnclosing(ClassSymbol c) {
1.1820 + if (c.owner.kind == PCK) {
1.1821 + Symbol owner = c.owner;
1.1822 + for (Name name : Convert.enclosingCandidates(Convert.shortName(c.name))) {
1.1823 + Symbol encl = owner.members().lookup(name).sym;
1.1824 + if (encl == null)
1.1825 + encl = classes.get(TypeSymbol.formFlatName(name, owner));
1.1826 + if (encl != null)
1.1827 + encl.complete();
1.1828 + }
1.1829 + }
1.1830 + }
1.1831 +
1.1832 + /** We can only read a single class file at a time; this
1.1833 + * flag keeps track of when we are currently reading a class
1.1834 + * file.
1.1835 + */
1.1836 + private boolean filling = false;
1.1837 +
1.1838 + /** Fill in definition of class `c' from corresponding class or
1.1839 + * source file.
1.1840 + */
1.1841 + private void fillIn(ClassSymbol c) {
1.1842 + if (completionFailureName == c.fullname) {
1.1843 + throw new CompletionFailure(c, "user-selected completion failure by class name");
1.1844 + }
1.1845 + currentOwner = c;
1.1846 + JavaFileObject classfile = c.classfile;
1.1847 + if (classfile != null) {
1.1848 + JavaFileObject previousClassFile = currentClassFile;
1.1849 + try {
1.1850 + assert !filling :
1.1851 + "Filling " + classfile.toUri() +
1.1852 + " during " + previousClassFile;
1.1853 + currentClassFile = classfile;
1.1854 + if (verbose) {
1.1855 + printVerbose("loading", currentClassFile.toString());
1.1856 + }
1.1857 + if (classfile.getKind() == JavaFileObject.Kind.CLASS) {
1.1858 + filling = true;
1.1859 + try {
1.1860 + bp = 0;
1.1861 + buf = readInputStream(buf, classfile.openInputStream());
1.1862 + readClassFile(c);
1.1863 + if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
1.1864 + List<Type> missing = missingTypeVariables;
1.1865 + List<Type> found = foundTypeVariables;
1.1866 + missingTypeVariables = List.nil();
1.1867 + foundTypeVariables = List.nil();
1.1868 + filling = false;
1.1869 + ClassType ct = (ClassType)currentOwner.type;
1.1870 + ct.supertype_field =
1.1871 + types.subst(ct.supertype_field, missing, found);
1.1872 + ct.interfaces_field =
1.1873 + types.subst(ct.interfaces_field, missing, found);
1.1874 + } else if (missingTypeVariables.isEmpty() !=
1.1875 + foundTypeVariables.isEmpty()) {
1.1876 + Name name = missingTypeVariables.head.tsym.name;
1.1877 + throw badClassFile("undecl.type.var", name);
1.1878 + }
1.1879 + } finally {
1.1880 + missingTypeVariables = List.nil();
1.1881 + foundTypeVariables = List.nil();
1.1882 + filling = false;
1.1883 + }
1.1884 + } else {
1.1885 + if (sourceCompleter != null) {
1.1886 + sourceCompleter.complete(c);
1.1887 + } else {
1.1888 + throw new IllegalStateException("Source completer required to read "
1.1889 + + classfile.toUri());
1.1890 + }
1.1891 + }
1.1892 + return;
1.1893 + } catch (IOException ex) {
1.1894 + throw badClassFile("unable.to.access.file", ex.getMessage());
1.1895 + } finally {
1.1896 + currentClassFile = previousClassFile;
1.1897 + }
1.1898 + } else {
1.1899 + throw
1.1900 + newCompletionFailure(c,
1.1901 + Log.getLocalizedString("class.file.not.found",
1.1902 + c.flatname));
1.1903 + }
1.1904 + }
1.1905 + // where
1.1906 + private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
1.1907 + try {
1.1908 + buf = ensureCapacity(buf, s.available());
1.1909 + int r = s.read(buf);
1.1910 + int bp = 0;
1.1911 + while (r != -1) {
1.1912 + bp += r;
1.1913 + buf = ensureCapacity(buf, bp);
1.1914 + r = s.read(buf, bp, buf.length - bp);
1.1915 + }
1.1916 + return buf;
1.1917 + } finally {
1.1918 + try {
1.1919 + s.close();
1.1920 + } catch (IOException e) {
1.1921 + /* Ignore any errors, as this stream may have already
1.1922 + * thrown a related exception which is the one that
1.1923 + * should be reported.
1.1924 + */
1.1925 + }
1.1926 + }
1.1927 + }
1.1928 + private static byte[] ensureCapacity(byte[] buf, int needed) {
1.1929 + if (buf.length < needed) {
1.1930 + byte[] old = buf;
1.1931 + buf = new byte[Integer.highestOneBit(needed) << 1];
1.1932 + System.arraycopy(old, 0, buf, 0, old.length);
1.1933 + }
1.1934 + return buf;
1.1935 + }
1.1936 + /** Static factory for CompletionFailure objects.
1.1937 + * In practice, only one can be used at a time, so we share one
1.1938 + * to reduce the expense of allocating new exception objects.
1.1939 + */
1.1940 + private CompletionFailure newCompletionFailure(ClassSymbol c,
1.1941 + String localized) {
1.1942 + if (!cacheCompletionFailure) {
1.1943 + // log.warning("proc.messager",
1.1944 + // Log.getLocalizedString("class.file.not.found", c.flatname));
1.1945 + // c.debug.printStackTrace();
1.1946 + return new CompletionFailure(c, localized);
1.1947 + } else {
1.1948 + CompletionFailure result = cachedCompletionFailure;
1.1949 + result.sym = c;
1.1950 + result.errmsg = localized;
1.1951 + return result;
1.1952 + }
1.1953 + }
1.1954 + private CompletionFailure cachedCompletionFailure =
1.1955 + new CompletionFailure(null, null);
1.1956 + {
1.1957 + cachedCompletionFailure.setStackTrace(new StackTraceElement[0]);
1.1958 + }
1.1959 +
1.1960 + /** Load a toplevel class with given fully qualified name
1.1961 + * The class is entered into `classes' only if load was successful.
1.1962 + */
1.1963 + public ClassSymbol loadClass(Name flatname) throws CompletionFailure {
1.1964 + boolean absent = classes.get(flatname) == null;
1.1965 + ClassSymbol c = enterClass(flatname);
1.1966 + if (c.members_field == null && c.completer != null) {
1.1967 + try {
1.1968 + c.complete();
1.1969 + } catch (CompletionFailure ex) {
1.1970 + if (absent) classes.remove(flatname);
1.1971 + throw ex;
1.1972 + }
1.1973 + }
1.1974 + return c;
1.1975 + }
1.1976 +
1.1977 +/************************************************************************
1.1978 + * Loading Packages
1.1979 + ***********************************************************************/
1.1980 +
1.1981 + /** Check to see if a package exists, given its fully qualified name.
1.1982 + */
1.1983 + public boolean packageExists(Name fullname) {
1.1984 + return enterPackage(fullname).exists();
1.1985 + }
1.1986 +
1.1987 + /** Make a package, given its fully qualified name.
1.1988 + */
1.1989 + public PackageSymbol enterPackage(Name fullname) {
1.1990 + PackageSymbol p = packages.get(fullname);
1.1991 + if (p == null) {
1.1992 + assert !fullname.isEmpty() : "rootPackage missing!";
1.1993 + p = new PackageSymbol(
1.1994 + Convert.shortName(fullname),
1.1995 + enterPackage(Convert.packagePart(fullname)));
1.1996 + p.completer = this;
1.1997 + packages.put(fullname, p);
1.1998 + }
1.1999 + return p;
1.2000 + }
1.2001 +
1.2002 + /** Make a package, given its unqualified name and enclosing package.
1.2003 + */
1.2004 + public PackageSymbol enterPackage(Name name, PackageSymbol owner) {
1.2005 + return enterPackage(TypeSymbol.formFullName(name, owner));
1.2006 + }
1.2007 +
1.2008 + /** Include class corresponding to given class file in package,
1.2009 + * unless (1) we already have one the same kind (.class or .java), or
1.2010 + * (2) we have one of the other kind, and the given class file
1.2011 + * is older.
1.2012 + */
1.2013 + protected void includeClassFile(PackageSymbol p, JavaFileObject file) {
1.2014 + if ((p.flags_field & EXISTS) == 0)
1.2015 + for (Symbol q = p; q != null && q.kind == PCK; q = q.owner)
1.2016 + q.flags_field |= EXISTS;
1.2017 + JavaFileObject.Kind kind = file.getKind();
1.2018 + int seen;
1.2019 + if (kind == JavaFileObject.Kind.CLASS)
1.2020 + seen = CLASS_SEEN;
1.2021 + else
1.2022 + seen = SOURCE_SEEN;
1.2023 + String binaryName = fileManager.inferBinaryName(currentLoc, file);
1.2024 + int lastDot = binaryName.lastIndexOf(".");
1.2025 + Name classname = names.fromString(binaryName.substring(lastDot + 1));
1.2026 + boolean isPkgInfo = classname == names.package_info;
1.2027 + ClassSymbol c = isPkgInfo
1.2028 + ? p.package_info
1.2029 + : (ClassSymbol) p.members_field.lookup(classname).sym;
1.2030 + if (c == null) {
1.2031 + c = enterClass(classname, p);
1.2032 + if (c.classfile == null) // only update the file if's it's newly created
1.2033 + c.classfile = file;
1.2034 + if (isPkgInfo) {
1.2035 + p.package_info = c;
1.2036 + } else {
1.2037 + if (c.owner == p) // it might be an inner class
1.2038 + p.members_field.enter(c);
1.2039 + }
1.2040 + } else if (c.classfile != null && (c.flags_field & seen) == 0) {
1.2041 + // if c.classfile == null, we are currently compiling this class
1.2042 + // and no further action is necessary.
1.2043 + // if (c.flags_field & seen) != 0, we have already encountered
1.2044 + // a file of the same kind; again no further action is necessary.
1.2045 + if ((c.flags_field & (CLASS_SEEN | SOURCE_SEEN)) != 0)
1.2046 + c.classfile = preferredFileObject(file, c.classfile);
1.2047 + }
1.2048 + c.flags_field |= seen;
1.2049 + }
1.2050 +
1.2051 + /** Implement policy to choose to derive information from a source
1.2052 + * file or a class file when both are present. May be overridden
1.2053 + * by subclasses.
1.2054 + */
1.2055 + protected JavaFileObject preferredFileObject(JavaFileObject a,
1.2056 + JavaFileObject b) {
1.2057 +
1.2058 + if (preferSource)
1.2059 + return (a.getKind() == JavaFileObject.Kind.SOURCE) ? a : b;
1.2060 + else {
1.2061 + long adate = a.getLastModified();
1.2062 + long bdate = b.getLastModified();
1.2063 + // 6449326: policy for bad lastModifiedTime in ClassReader
1.2064 + //assert adate >= 0 && bdate >= 0;
1.2065 + return (adate > bdate) ? a : b;
1.2066 + }
1.2067 + }
1.2068 +
1.2069 + /**
1.2070 + * specifies types of files to be read when filling in a package symbol
1.2071 + */
1.2072 + protected EnumSet<JavaFileObject.Kind> getPackageFileKinds() {
1.2073 + return EnumSet.of(JavaFileObject.Kind.CLASS, JavaFileObject.Kind.SOURCE);
1.2074 + }
1.2075 +
1.2076 + /**
1.2077 + * this is used to support javadoc
1.2078 + */
1.2079 + protected void extraFileActions(PackageSymbol pack, JavaFileObject fe) {
1.2080 + }
1.2081 +
1.2082 + protected Location currentLoc; // FIXME
1.2083 +
1.2084 + private boolean verbosePath = true;
1.2085 +
1.2086 + /** Load directory of package into members scope.
1.2087 + */
1.2088 + private void fillIn(PackageSymbol p) throws IOException {
1.2089 + if (p.members_field == null) p.members_field = new Scope(p);
1.2090 + String packageName = p.fullname.toString();
1.2091 +
1.2092 + Set<JavaFileObject.Kind> kinds = getPackageFileKinds();
1.2093 +
1.2094 + fillIn(p, PLATFORM_CLASS_PATH,
1.2095 + fileManager.list(PLATFORM_CLASS_PATH,
1.2096 + packageName,
1.2097 + EnumSet.of(JavaFileObject.Kind.CLASS),
1.2098 + false));
1.2099 +
1.2100 + Set<JavaFileObject.Kind> classKinds = EnumSet.copyOf(kinds);
1.2101 + classKinds.remove(JavaFileObject.Kind.SOURCE);
1.2102 + boolean wantClassFiles = !classKinds.isEmpty();
1.2103 +
1.2104 + Set<JavaFileObject.Kind> sourceKinds = EnumSet.copyOf(kinds);
1.2105 + sourceKinds.remove(JavaFileObject.Kind.CLASS);
1.2106 + boolean wantSourceFiles = !sourceKinds.isEmpty();
1.2107 +
1.2108 + boolean haveSourcePath = fileManager.hasLocation(SOURCE_PATH);
1.2109 +
1.2110 + if (verbose && verbosePath) {
1.2111 + if (fileManager instanceof StandardJavaFileManager) {
1.2112 + StandardJavaFileManager fm = (StandardJavaFileManager)fileManager;
1.2113 + if (haveSourcePath && wantSourceFiles) {
1.2114 + List<File> path = List.nil();
1.2115 + for (File file : fm.getLocation(SOURCE_PATH)) {
1.2116 + path = path.prepend(file);
1.2117 + }
1.2118 + printVerbose("sourcepath", path.reverse().toString());
1.2119 + } else if (wantSourceFiles) {
1.2120 + List<File> path = List.nil();
1.2121 + for (File file : fm.getLocation(CLASS_PATH)) {
1.2122 + path = path.prepend(file);
1.2123 + }
1.2124 + printVerbose("sourcepath", path.reverse().toString());
1.2125 + }
1.2126 + if (wantClassFiles) {
1.2127 + List<File> path = List.nil();
1.2128 + for (File file : fm.getLocation(PLATFORM_CLASS_PATH)) {
1.2129 + path = path.prepend(file);
1.2130 + }
1.2131 + for (File file : fm.getLocation(CLASS_PATH)) {
1.2132 + path = path.prepend(file);
1.2133 + }
1.2134 + printVerbose("classpath", path.reverse().toString());
1.2135 + }
1.2136 + }
1.2137 + }
1.2138 +
1.2139 + if (wantSourceFiles && !haveSourcePath) {
1.2140 + fillIn(p, CLASS_PATH,
1.2141 + fileManager.list(CLASS_PATH,
1.2142 + packageName,
1.2143 + kinds,
1.2144 + false));
1.2145 + } else {
1.2146 + if (wantClassFiles)
1.2147 + fillIn(p, CLASS_PATH,
1.2148 + fileManager.list(CLASS_PATH,
1.2149 + packageName,
1.2150 + classKinds,
1.2151 + false));
1.2152 + if (wantSourceFiles)
1.2153 + fillIn(p, SOURCE_PATH,
1.2154 + fileManager.list(SOURCE_PATH,
1.2155 + packageName,
1.2156 + sourceKinds,
1.2157 + false));
1.2158 + }
1.2159 + verbosePath = false;
1.2160 + }
1.2161 + // where
1.2162 + private void fillIn(PackageSymbol p,
1.2163 + Location location,
1.2164 + Iterable<JavaFileObject> files)
1.2165 + {
1.2166 + currentLoc = location;
1.2167 + for (JavaFileObject fo : files) {
1.2168 + switch (fo.getKind()) {
1.2169 + case CLASS:
1.2170 + case SOURCE: {
1.2171 + // TODO pass binaryName to includeClassFile
1.2172 + String binaryName = fileManager.inferBinaryName(currentLoc, fo);
1.2173 + String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1);
1.2174 + if (SourceVersion.isIdentifier(simpleName) ||
1.2175 + simpleName.equals("package-info"))
1.2176 + includeClassFile(p, fo);
1.2177 + break;
1.2178 + }
1.2179 + default:
1.2180 + extraFileActions(p, fo);
1.2181 + }
1.2182 + }
1.2183 + }
1.2184 +
1.2185 + /** Output for "-verbose" option.
1.2186 + * @param key The key to look up the correct internationalized string.
1.2187 + * @param arg An argument for substitution into the output string.
1.2188 + */
1.2189 + private void printVerbose(String key, CharSequence arg) {
1.2190 + Log.printLines(log.noticeWriter, Log.getLocalizedString("verbose." + key, arg));
1.2191 + }
1.2192 +
1.2193 + /** Output for "-checkclassfile" option.
1.2194 + * @param key The key to look up the correct internationalized string.
1.2195 + * @param arg An argument for substitution into the output string.
1.2196 + */
1.2197 + private void printCCF(String key, Object arg) {
1.2198 + Log.printLines(log.noticeWriter, Log.getLocalizedString(key, arg));
1.2199 + }
1.2200 +
1.2201 +
1.2202 + public interface SourceCompleter {
1.2203 + void complete(ClassSymbol sym)
1.2204 + throws CompletionFailure;
1.2205 + }
1.2206 +
1.2207 + /**
1.2208 + * A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
1.2209 + * The attribute is only the last component of the original filename, so is unlikely
1.2210 + * to be valid as is, so operations other than those to access the name throw
1.2211 + * UnsupportedOperationException
1.2212 + */
1.2213 + private static class SourceFileObject extends BaseFileObject {
1.2214 +
1.2215 + /** The file's name.
1.2216 + */
1.2217 + private Name name;
1.2218 +
1.2219 + public SourceFileObject(Name name) {
1.2220 + this.name = name;
1.2221 + }
1.2222 +
1.2223 + public InputStream openInputStream() {
1.2224 + throw new UnsupportedOperationException();
1.2225 + }
1.2226 +
1.2227 + public OutputStream openOutputStream() {
1.2228 + throw new UnsupportedOperationException();
1.2229 + }
1.2230 +
1.2231 + public Reader openReader() {
1.2232 + throw new UnsupportedOperationException();
1.2233 + }
1.2234 +
1.2235 + public Writer openWriter() {
1.2236 + throw new UnsupportedOperationException();
1.2237 + }
1.2238 +
1.2239 + /** @deprecated see bug 6410637 */
1.2240 + @Deprecated
1.2241 + public String getName() {
1.2242 + return name.toString();
1.2243 + }
1.2244 +
1.2245 + public long getLastModified() {
1.2246 + throw new UnsupportedOperationException();
1.2247 + }
1.2248 +
1.2249 + public boolean delete() {
1.2250 + throw new UnsupportedOperationException();
1.2251 + }
1.2252 +
1.2253 + public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
1.2254 + throw new UnsupportedOperationException();
1.2255 + }
1.2256 +
1.2257 + @Override
1.2258 + public boolean equals(Object other) {
1.2259 + if (!(other instanceof SourceFileObject))
1.2260 + return false;
1.2261 + SourceFileObject o = (SourceFileObject) other;
1.2262 + return name.equals(o.name);
1.2263 + }
1.2264 +
1.2265 + @Override
1.2266 + public int hashCode() {
1.2267 + return name.hashCode();
1.2268 + }
1.2269 +
1.2270 + public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
1.2271 + return true; // fail-safe mode
1.2272 + }
1.2273 +
1.2274 + public URI toUri() {
1.2275 + return URI.create(name.toString());
1.2276 + }
1.2277 +
1.2278 + public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
1.2279 + throw new UnsupportedOperationException();
1.2280 + }
1.2281 +
1.2282 + }
1.2283 +}
