2966 lines
109 KiB
Java
2966 lines
109 KiB
Java
/*
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* Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.javac.jvm;
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import java.io.*;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.nio.CharBuffer;
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import java.util.Arrays;
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import java.util.EnumSet;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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import javax.lang.model.SourceVersion;
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import javax.tools.JavaFileObject;
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import javax.tools.JavaFileManager;
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import javax.tools.JavaFileManager.Location;
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import javax.tools.StandardJavaFileManager;
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import static javax.tools.StandardLocation.*;
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import com.sun.tools.javac.comp.Annotate;
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import com.sun.tools.javac.code.*;
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import com.sun.tools.javac.code.Lint.LintCategory;
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import com.sun.tools.javac.code.Type.*;
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import com.sun.tools.javac.code.Symbol.*;
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import com.sun.tools.javac.code.Symtab;
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import com.sun.tools.javac.file.BaseFileObject;
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import com.sun.tools.javac.util.*;
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import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
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import static com.sun.tools.javac.code.Flags.*;
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import static com.sun.tools.javac.code.Kinds.*;
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import static com.sun.tools.javac.code.TypeTag.CLASS;
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import static com.sun.tools.javac.code.TypeTag.TYPEVAR;
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import static com.sun.tools.javac.jvm.ClassFile.*;
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import static com.sun.tools.javac.jvm.ClassFile.Version.*;
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import static com.sun.tools.javac.main.Option.*;
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/** This class provides operations to read a classfile into an internal
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* representation. The internal representation is anchored in a
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* ClassSymbol which contains in its scope symbol representations
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* for all other definitions in the classfile. Top-level Classes themselves
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* appear as members of the scopes of PackageSymbols.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public class ClassReader {
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/** The context key for the class reader. */
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protected static final Context.Key<ClassReader> classReaderKey =
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new Context.Key<ClassReader>();
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public static final int INITIAL_BUFFER_SIZE = 0x0fff0;
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Annotate annotate;
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/** Switch: verbose output.
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*/
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boolean verbose;
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/** Switch: check class file for correct minor version, unrecognized
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* attributes.
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*/
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boolean checkClassFile;
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/** Switch: read constant pool and code sections. This switch is initially
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* set to false but can be turned on from outside.
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*/
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public boolean readAllOfClassFile = false;
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/** Switch: read GJ signature information.
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*/
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boolean allowGenerics;
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/** Switch: read varargs attribute.
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*/
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boolean allowVarargs;
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/** Switch: allow annotations.
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*/
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boolean allowAnnotations;
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/** Switch: allow simplified varargs.
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*/
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boolean allowSimplifiedVarargs;
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/** Lint option: warn about classfile issues
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*/
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boolean lintClassfile;
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/** Switch: preserve parameter names from the variable table.
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*/
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public boolean saveParameterNames;
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/**
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* Switch: cache completion failures unless -XDdev is used
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*/
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private boolean cacheCompletionFailure;
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/**
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* Switch: prefer source files instead of newer when both source
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* and class are available
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**/
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public boolean preferSource;
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/**
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* The currently selected profile.
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*/
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public final Profile profile;
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/** The log to use for verbose output
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*/
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final Log log;
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/** The symbol table. */
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Symtab syms;
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Types types;
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/** The name table. */
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final Names names;
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/** Force a completion failure on this name
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*/
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final Name completionFailureName;
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/** Access to files
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*/
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private final JavaFileManager fileManager;
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/** Factory for diagnostics
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*/
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JCDiagnostic.Factory diagFactory;
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/** Can be reassigned from outside:
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* the completer to be used for ".java" files. If this remains unassigned
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* ".java" files will not be loaded.
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*/
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public SourceCompleter sourceCompleter = null;
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/** A hashtable containing the encountered top-level and member classes,
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* indexed by flat names. The table does not contain local classes.
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*/
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private Map<Name,ClassSymbol> classes;
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/** A hashtable containing the encountered packages.
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*/
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private Map<Name, PackageSymbol> packages;
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/** The current scope where type variables are entered.
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*/
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protected Scope typevars;
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/** The path name of the class file currently being read.
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*/
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protected JavaFileObject currentClassFile = null;
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/** The class or method currently being read.
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*/
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protected Symbol currentOwner = null;
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/** The buffer containing the currently read class file.
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*/
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byte[] buf = new byte[INITIAL_BUFFER_SIZE];
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/** The current input pointer.
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*/
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protected int bp;
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/** The objects of the constant pool.
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*/
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Object[] poolObj;
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/** For every constant pool entry, an index into buf where the
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* defining section of the entry is found.
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*/
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int[] poolIdx;
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/** The major version number of the class file being read. */
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int majorVersion;
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/** The minor version number of the class file being read. */
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int minorVersion;
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/** A table to hold the constant pool indices for method parameter
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* names, as given in LocalVariableTable attributes.
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*/
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int[] parameterNameIndices;
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/**
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* Whether or not any parameter names have been found.
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*/
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boolean haveParameterNameIndices;
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/** Set this to false every time we start reading a method
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* and are saving parameter names. Set it to true when we see
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* MethodParameters, if it's set when we see a LocalVariableTable,
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* then we ignore the parameter names from the LVT.
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*/
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boolean sawMethodParameters;
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/**
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* The set of attribute names for which warnings have been generated for the current class
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*/
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Set<Name> warnedAttrs = new HashSet<Name>();
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/**
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* Completer that delegates to the complete-method of this class.
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*/
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private final Completer thisCompleter = new Completer() {
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@Override
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public void complete(Symbol sym) throws CompletionFailure {
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ClassReader.this.complete(sym);
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}
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};
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/** Get the ClassReader instance for this invocation. */
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public static ClassReader instance(Context context) {
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ClassReader instance = context.get(classReaderKey);
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if (instance == null)
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instance = new ClassReader(context, true);
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return instance;
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}
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/** Initialize classes and packages, treating this as the definitive classreader. */
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public void init(Symtab syms) {
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init(syms, true);
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}
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/** Initialize classes and packages, optionally treating this as
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* the definitive classreader.
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*/
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private void init(Symtab syms, boolean definitive) {
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if (classes != null) return;
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if (definitive) {
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Assert.check(packages == null || packages == syms.packages);
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packages = syms.packages;
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Assert.check(classes == null || classes == syms.classes);
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classes = syms.classes;
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} else {
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packages = new HashMap<Name, PackageSymbol>();
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classes = new HashMap<Name, ClassSymbol>();
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}
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packages.put(names.empty, syms.rootPackage);
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syms.rootPackage.completer = thisCompleter;
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syms.unnamedPackage.completer = thisCompleter;
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}
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/** Construct a new class reader, optionally treated as the
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* definitive classreader for this invocation.
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*/
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protected ClassReader(Context context, boolean definitive) {
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if (definitive) context.put(classReaderKey, this);
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names = Names.instance(context);
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syms = Symtab.instance(context);
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types = Types.instance(context);
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fileManager = context.get(JavaFileManager.class);
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if (fileManager == null)
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throw new AssertionError("FileManager initialization error");
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diagFactory = JCDiagnostic.Factory.instance(context);
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init(syms, definitive);
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log = Log.instance(context);
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Options options = Options.instance(context);
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annotate = Annotate.instance(context);
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verbose = options.isSet(VERBOSE);
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checkClassFile = options.isSet("-checkclassfile");
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Source source = Source.instance(context);
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allowGenerics = source.allowGenerics();
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allowVarargs = source.allowVarargs();
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allowAnnotations = source.allowAnnotations();
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allowSimplifiedVarargs = source.allowSimplifiedVarargs();
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saveParameterNames = options.isSet("save-parameter-names");
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cacheCompletionFailure = options.isUnset("dev");
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preferSource = "source".equals(options.get("-Xprefer"));
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profile = Profile.instance(context);
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completionFailureName =
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options.isSet("failcomplete")
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? names.fromString(options.get("failcomplete"))
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: null;
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typevars = new Scope(syms.noSymbol);
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lintClassfile = Lint.instance(context).isEnabled(LintCategory.CLASSFILE);
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initAttributeReaders();
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}
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/** Add member to class unless it is synthetic.
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*/
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private void enterMember(ClassSymbol c, Symbol sym) {
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// Synthetic members are not entered -- reason lost to history (optimization?).
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// Lambda methods must be entered because they may have inner classes (which reference them)
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if ((sym.flags_field & (SYNTHETIC|BRIDGE)) != SYNTHETIC || sym.name.startsWith(names.lambda))
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c.members_field.enter(sym);
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}
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/************************************************************************
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* Error Diagnoses
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***********************************************************************/
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public class BadClassFile extends CompletionFailure {
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private static final long serialVersionUID = 0;
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public BadClassFile(TypeSymbol sym, JavaFileObject file, JCDiagnostic diag) {
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super(sym, createBadClassFileDiagnostic(file, diag));
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}
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}
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// where
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private JCDiagnostic createBadClassFileDiagnostic(JavaFileObject file, JCDiagnostic diag) {
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String key = (file.getKind() == JavaFileObject.Kind.SOURCE
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? "bad.source.file.header" : "bad.class.file.header");
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return diagFactory.fragment(key, file, diag);
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}
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public BadClassFile badClassFile(String key, Object... args) {
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return new BadClassFile (
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currentOwner.enclClass(),
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currentClassFile,
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diagFactory.fragment(key, args));
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}
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/************************************************************************
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* Buffer Access
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***********************************************************************/
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/** Read a character.
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*/
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char nextChar() {
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return (char)(((buf[bp++] & 0xFF) << 8) + (buf[bp++] & 0xFF));
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}
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/** Read a byte.
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*/
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int nextByte() {
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return buf[bp++] & 0xFF;
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}
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/** Read an integer.
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*/
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int nextInt() {
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return
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((buf[bp++] & 0xFF) << 24) +
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((buf[bp++] & 0xFF) << 16) +
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((buf[bp++] & 0xFF) << 8) +
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(buf[bp++] & 0xFF);
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}
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/** Extract a character at position bp from buf.
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*/
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char getChar(int bp) {
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return
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(char)(((buf[bp] & 0xFF) << 8) + (buf[bp+1] & 0xFF));
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}
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/** Extract an integer at position bp from buf.
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*/
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int getInt(int bp) {
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return
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((buf[bp] & 0xFF) << 24) +
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((buf[bp+1] & 0xFF) << 16) +
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((buf[bp+2] & 0xFF) << 8) +
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(buf[bp+3] & 0xFF);
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}
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/** Extract a long integer at position bp from buf.
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*/
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long getLong(int bp) {
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DataInputStream bufin =
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new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
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try {
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return bufin.readLong();
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} catch (IOException e) {
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throw new AssertionError(e);
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}
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}
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/** Extract a float at position bp from buf.
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*/
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float getFloat(int bp) {
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DataInputStream bufin =
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new DataInputStream(new ByteArrayInputStream(buf, bp, 4));
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try {
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return bufin.readFloat();
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} catch (IOException e) {
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throw new AssertionError(e);
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}
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}
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/** Extract a double at position bp from buf.
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*/
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double getDouble(int bp) {
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DataInputStream bufin =
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new DataInputStream(new ByteArrayInputStream(buf, bp, 8));
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try {
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return bufin.readDouble();
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} catch (IOException e) {
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throw new AssertionError(e);
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}
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}
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/************************************************************************
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* Constant Pool Access
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***********************************************************************/
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/** Index all constant pool entries, writing their start addresses into
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* poolIdx.
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*/
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void indexPool() {
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poolIdx = new int[nextChar()];
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poolObj = new Object[poolIdx.length];
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int i = 1;
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while (i < poolIdx.length) {
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poolIdx[i++] = bp;
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byte tag = buf[bp++];
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switch (tag) {
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case CONSTANT_Utf8: case CONSTANT_Unicode: {
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int len = nextChar();
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bp = bp + len;
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break;
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}
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case CONSTANT_Class:
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case CONSTANT_String:
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case CONSTANT_MethodType:
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bp = bp + 2;
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break;
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case CONSTANT_MethodHandle:
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bp = bp + 3;
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break;
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case CONSTANT_Fieldref:
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case CONSTANT_Methodref:
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case CONSTANT_InterfaceMethodref:
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case CONSTANT_NameandType:
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case CONSTANT_Integer:
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case CONSTANT_Float:
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case CONSTANT_InvokeDynamic:
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bp = bp + 4;
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break;
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case CONSTANT_Long:
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case CONSTANT_Double:
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bp = bp + 8;
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i++;
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break;
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default:
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throw badClassFile("bad.const.pool.tag.at",
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Byte.toString(tag),
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Integer.toString(bp -1));
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}
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}
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}
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/** Read constant pool entry at start address i, use pool as a cache.
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*/
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Object readPool(int i) {
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Object result = poolObj[i];
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if (result != null) return result;
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int index = poolIdx[i];
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if (index == 0) return null;
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byte tag = buf[index];
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switch (tag) {
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case CONSTANT_Utf8:
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poolObj[i] = names.fromUtf(buf, index + 3, getChar(index + 1));
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break;
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case CONSTANT_Unicode:
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throw badClassFile("unicode.str.not.supported");
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case CONSTANT_Class:
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poolObj[i] = readClassOrType(getChar(index + 1));
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break;
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case CONSTANT_String:
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// FIXME: (footprint) do not use toString here
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poolObj[i] = readName(getChar(index + 1)).toString();
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break;
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case CONSTANT_Fieldref: {
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ClassSymbol owner = readClassSymbol(getChar(index + 1));
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NameAndType nt = readNameAndType(getChar(index + 3));
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poolObj[i] = new VarSymbol(0, nt.name, nt.uniqueType.type, owner);
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break;
|
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}
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case CONSTANT_Methodref:
|
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case CONSTANT_InterfaceMethodref: {
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ClassSymbol owner = readClassSymbol(getChar(index + 1));
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NameAndType nt = readNameAndType(getChar(index + 3));
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poolObj[i] = new MethodSymbol(0, nt.name, nt.uniqueType.type, owner);
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break;
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}
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case CONSTANT_NameandType:
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poolObj[i] = new NameAndType(
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readName(getChar(index + 1)),
|
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readType(getChar(index + 3)), types);
|
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break;
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case CONSTANT_Integer:
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poolObj[i] = getInt(index + 1);
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break;
|
|
case CONSTANT_Float:
|
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poolObj[i] = new Float(getFloat(index + 1));
|
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break;
|
|
case CONSTANT_Long:
|
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poolObj[i] = new Long(getLong(index + 1));
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|
break;
|
|
case CONSTANT_Double:
|
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poolObj[i] = new Double(getDouble(index + 1));
|
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break;
|
|
case CONSTANT_MethodHandle:
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skipBytes(4);
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|
break;
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|
case CONSTANT_MethodType:
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|
skipBytes(3);
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break;
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|
case CONSTANT_InvokeDynamic:
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skipBytes(5);
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break;
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|
default:
|
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throw badClassFile("bad.const.pool.tag", Byte.toString(tag));
|
|
}
|
|
return poolObj[i];
|
|
}
|
|
|
|
/** Read signature and convert to type.
|
|
*/
|
|
Type readType(int i) {
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|
int index = poolIdx[i];
|
|
return sigToType(buf, index + 3, getChar(index + 1));
|
|
}
|
|
|
|
/** If name is an array type or class signature, return the
|
|
* corresponding type; otherwise return a ClassSymbol with given name.
|
|
*/
|
|
Object readClassOrType(int i) {
|
|
int index = poolIdx[i];
|
|
int len = getChar(index + 1);
|
|
int start = index + 3;
|
|
Assert.check(buf[start] == '[' || buf[start + len - 1] != ';');
|
|
// by the above assertion, the following test can be
|
|
// simplified to (buf[start] == '[')
|
|
return (buf[start] == '[' || buf[start + len - 1] == ';')
|
|
? (Object)sigToType(buf, start, len)
|
|
: (Object)enterClass(names.fromUtf(internalize(buf, start,
|
|
len)));
|
|
}
|
|
|
|
/** Read signature and convert to type parameters.
|
|
*/
|
|
List<Type> readTypeParams(int i) {
|
|
int index = poolIdx[i];
|
|
return sigToTypeParams(buf, index + 3, getChar(index + 1));
|
|
}
|
|
|
|
/** Read class entry.
|
|
*/
|
|
ClassSymbol readClassSymbol(int i) {
|
|
Object obj = readPool(i);
|
|
if (obj != null && !(obj instanceof ClassSymbol))
|
|
throw badClassFile("bad.const.pool.entry",
|
|
currentClassFile.toString(),
|
|
"CONSTANT_Class_info", i);
|
|
return (ClassSymbol)obj;
|
|
}
|
|
|
|
/** Read name.
|
|
*/
|
|
Name readName(int i) {
|
|
Object obj = readPool(i);
|
|
if (obj != null && !(obj instanceof Name))
|
|
throw badClassFile("bad.const.pool.entry",
|
|
currentClassFile.toString(),
|
|
"CONSTANT_Utf8_info or CONSTANT_String_info", i);
|
|
return (Name)obj;
|
|
}
|
|
|
|
/** Read name and type.
|
|
*/
|
|
NameAndType readNameAndType(int i) {
|
|
Object obj = readPool(i);
|
|
if (obj != null && !(obj instanceof NameAndType))
|
|
throw badClassFile("bad.const.pool.entry",
|
|
currentClassFile.toString(),
|
|
"CONSTANT_NameAndType_info", i);
|
|
return (NameAndType)obj;
|
|
}
|
|
|
|
/************************************************************************
|
|
* Reading Types
|
|
***********************************************************************/
|
|
|
|
/** The unread portion of the currently read type is
|
|
* signature[sigp..siglimit-1].
|
|
*/
|
|
byte[] signature;
|
|
int sigp;
|
|
int siglimit;
|
|
boolean sigEnterPhase = false;
|
|
|
|
/** Convert signature to type, where signature is a byte array segment.
|
|
*/
|
|
Type sigToType(byte[] sig, int offset, int len) {
|
|
signature = sig;
|
|
sigp = offset;
|
|
siglimit = offset + len;
|
|
return sigToType();
|
|
}
|
|
|
|
/** Convert signature to type, where signature is implicit.
|
|
*/
|
|
Type sigToType() {
|
|
switch ((char) signature[sigp]) {
|
|
case 'T':
|
|
sigp++;
|
|
int start = sigp;
|
|
while (signature[sigp] != ';') sigp++;
|
|
sigp++;
|
|
return sigEnterPhase
|
|
? Type.noType
|
|
: findTypeVar(names.fromUtf(signature, start, sigp - 1 - start));
|
|
case '+': {
|
|
sigp++;
|
|
Type t = sigToType();
|
|
return new WildcardType(t, BoundKind.EXTENDS,
|
|
syms.boundClass);
|
|
}
|
|
case '*':
|
|
sigp++;
|
|
return new WildcardType(syms.objectType, BoundKind.UNBOUND,
|
|
syms.boundClass);
|
|
case '-': {
|
|
sigp++;
|
|
Type t = sigToType();
|
|
return new WildcardType(t, BoundKind.SUPER,
|
|
syms.boundClass);
|
|
}
|
|
case 'B':
|
|
sigp++;
|
|
return syms.byteType;
|
|
case 'C':
|
|
sigp++;
|
|
return syms.charType;
|
|
case 'D':
|
|
sigp++;
|
|
return syms.doubleType;
|
|
case 'F':
|
|
sigp++;
|
|
return syms.floatType;
|
|
case 'I':
|
|
sigp++;
|
|
return syms.intType;
|
|
case 'J':
|
|
sigp++;
|
|
return syms.longType;
|
|
case 'L':
|
|
{
|
|
// int oldsigp = sigp;
|
|
Type t = classSigToType();
|
|
if (sigp < siglimit && signature[sigp] == '.')
|
|
throw badClassFile("deprecated inner class signature syntax " +
|
|
"(please recompile from source)");
|
|
/*
|
|
System.err.println(" decoded " +
|
|
new String(signature, oldsigp, sigp-oldsigp) +
|
|
" => " + t + " outer " + t.outer());
|
|
*/
|
|
return t;
|
|
}
|
|
case 'S':
|
|
sigp++;
|
|
return syms.shortType;
|
|
case 'V':
|
|
sigp++;
|
|
return syms.voidType;
|
|
case 'Z':
|
|
sigp++;
|
|
return syms.booleanType;
|
|
case '[':
|
|
sigp++;
|
|
return new ArrayType(sigToType(), syms.arrayClass);
|
|
case '(':
|
|
sigp++;
|
|
List<Type> argtypes = sigToTypes(')');
|
|
Type restype = sigToType();
|
|
List<Type> thrown = List.nil();
|
|
while (signature[sigp] == '^') {
|
|
sigp++;
|
|
thrown = thrown.prepend(sigToType());
|
|
}
|
|
// if there is a typevar in the throws clause we should state it.
|
|
for (List<Type> l = thrown; l.nonEmpty(); l = l.tail) {
|
|
if (l.head.hasTag(TYPEVAR)) {
|
|
l.head.tsym.flags_field |= THROWS;
|
|
}
|
|
}
|
|
return new MethodType(argtypes,
|
|
restype,
|
|
thrown.reverse(),
|
|
syms.methodClass);
|
|
case '<':
|
|
typevars = typevars.dup(currentOwner);
|
|
Type poly = new ForAll(sigToTypeParams(), sigToType());
|
|
typevars = typevars.leave();
|
|
return poly;
|
|
default:
|
|
throw badClassFile("bad.signature",
|
|
Convert.utf2string(signature, sigp, 10));
|
|
}
|
|
}
|
|
|
|
byte[] signatureBuffer = new byte[0];
|
|
int sbp = 0;
|
|
/** Convert class signature to type, where signature is implicit.
|
|
*/
|
|
Type classSigToType() {
|
|
if (signature[sigp] != 'L')
|
|
throw badClassFile("bad.class.signature",
|
|
Convert.utf2string(signature, sigp, 10));
|
|
sigp++;
|
|
Type outer = Type.noType;
|
|
int startSbp = sbp;
|
|
|
|
while (true) {
|
|
final byte c = signature[sigp++];
|
|
switch (c) {
|
|
|
|
case ';': { // end
|
|
ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
|
|
startSbp,
|
|
sbp - startSbp));
|
|
|
|
try {
|
|
return (outer == Type.noType) ?
|
|
t.erasure(types) :
|
|
new ClassType(outer, List.<Type>nil(), t);
|
|
} finally {
|
|
sbp = startSbp;
|
|
}
|
|
}
|
|
|
|
case '<': // generic arguments
|
|
ClassSymbol t = enterClass(names.fromUtf(signatureBuffer,
|
|
startSbp,
|
|
sbp - startSbp));
|
|
outer = new ClassType(outer, sigToTypes('>'), t) {
|
|
boolean completed = false;
|
|
@Override
|
|
public Type getEnclosingType() {
|
|
if (!completed) {
|
|
completed = true;
|
|
tsym.complete();
|
|
Type enclosingType = tsym.type.getEnclosingType();
|
|
if (enclosingType != Type.noType) {
|
|
List<Type> typeArgs =
|
|
super.getEnclosingType().allparams();
|
|
List<Type> typeParams =
|
|
enclosingType.allparams();
|
|
if (typeParams.length() != typeArgs.length()) {
|
|
// no "rare" types
|
|
super.setEnclosingType(types.erasure(enclosingType));
|
|
} else {
|
|
super.setEnclosingType(types.subst(enclosingType,
|
|
typeParams,
|
|
typeArgs));
|
|
}
|
|
} else {
|
|
super.setEnclosingType(Type.noType);
|
|
}
|
|
}
|
|
return super.getEnclosingType();
|
|
}
|
|
@Override
|
|
public void setEnclosingType(Type outer) {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
};
|
|
switch (signature[sigp++]) {
|
|
case ';':
|
|
if (sigp < signature.length && signature[sigp] == '.') {
|
|
// support old-style GJC signatures
|
|
// The signature produced was
|
|
// Lfoo/Outer<Lfoo/X;>;.Lfoo/Outer$Inner<Lfoo/Y;>;
|
|
// rather than say
|
|
// Lfoo/Outer<Lfoo/X;>.Inner<Lfoo/Y;>;
|
|
// so we skip past ".Lfoo/Outer$"
|
|
sigp += (sbp - startSbp) + // "foo/Outer"
|
|
3; // ".L" and "$"
|
|
signatureBuffer[sbp++] = (byte)'$';
|
|
break;
|
|
} else {
|
|
sbp = startSbp;
|
|
return outer;
|
|
}
|
|
case '.':
|
|
signatureBuffer[sbp++] = (byte)'$';
|
|
break;
|
|
default:
|
|
throw new AssertionError(signature[sigp-1]);
|
|
}
|
|
continue;
|
|
|
|
case '.':
|
|
//we have seen an enclosing non-generic class
|
|
if (outer != Type.noType) {
|
|
t = enterClass(names.fromUtf(signatureBuffer,
|
|
startSbp,
|
|
sbp - startSbp));
|
|
outer = new ClassType(outer, List.<Type>nil(), t);
|
|
}
|
|
signatureBuffer[sbp++] = (byte)'$';
|
|
continue;
|
|
case '/':
|
|
signatureBuffer[sbp++] = (byte)'.';
|
|
continue;
|
|
default:
|
|
signatureBuffer[sbp++] = c;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Convert (implicit) signature to list of types
|
|
* until `terminator' is encountered.
|
|
*/
|
|
List<Type> sigToTypes(char terminator) {
|
|
List<Type> head = List.of(null);
|
|
List<Type> tail = head;
|
|
while (signature[sigp] != terminator)
|
|
tail = tail.setTail(List.of(sigToType()));
|
|
sigp++;
|
|
return head.tail;
|
|
}
|
|
|
|
/** Convert signature to type parameters, where signature is a byte
|
|
* array segment.
|
|
*/
|
|
List<Type> sigToTypeParams(byte[] sig, int offset, int len) {
|
|
signature = sig;
|
|
sigp = offset;
|
|
siglimit = offset + len;
|
|
return sigToTypeParams();
|
|
}
|
|
|
|
/** Convert signature to type parameters, where signature is implicit.
|
|
*/
|
|
List<Type> sigToTypeParams() {
|
|
List<Type> tvars = List.nil();
|
|
if (signature[sigp] == '<') {
|
|
sigp++;
|
|
int start = sigp;
|
|
sigEnterPhase = true;
|
|
while (signature[sigp] != '>')
|
|
tvars = tvars.prepend(sigToTypeParam());
|
|
sigEnterPhase = false;
|
|
sigp = start;
|
|
while (signature[sigp] != '>')
|
|
sigToTypeParam();
|
|
sigp++;
|
|
}
|
|
return tvars.reverse();
|
|
}
|
|
|
|
/** Convert (implicit) signature to type parameter.
|
|
*/
|
|
Type sigToTypeParam() {
|
|
int start = sigp;
|
|
while (signature[sigp] != ':') sigp++;
|
|
Name name = names.fromUtf(signature, start, sigp - start);
|
|
TypeVar tvar;
|
|
if (sigEnterPhase) {
|
|
tvar = new TypeVar(name, currentOwner, syms.botType);
|
|
typevars.enter(tvar.tsym);
|
|
} else {
|
|
tvar = (TypeVar)findTypeVar(name);
|
|
}
|
|
List<Type> bounds = List.nil();
|
|
boolean allInterfaces = false;
|
|
if (signature[sigp] == ':' && signature[sigp+1] == ':') {
|
|
sigp++;
|
|
allInterfaces = true;
|
|
}
|
|
while (signature[sigp] == ':') {
|
|
sigp++;
|
|
bounds = bounds.prepend(sigToType());
|
|
}
|
|
if (!sigEnterPhase) {
|
|
types.setBounds(tvar, bounds.reverse(), allInterfaces);
|
|
}
|
|
return tvar;
|
|
}
|
|
|
|
/** Find type variable with given name in `typevars' scope.
|
|
*/
|
|
Type findTypeVar(Name name) {
|
|
Scope.Entry e = typevars.lookup(name);
|
|
if (e.scope != null) {
|
|
return e.sym.type;
|
|
} else {
|
|
if (readingClassAttr) {
|
|
// While reading the class attribute, the supertypes
|
|
// might refer to a type variable from an enclosing element
|
|
// (method or class).
|
|
// If the type variable is defined in the enclosing class,
|
|
// we can actually find it in
|
|
// currentOwner.owner.type.getTypeArguments()
|
|
// However, until we have read the enclosing method attribute
|
|
// we don't know for sure if this owner is correct. It could
|
|
// be a method and there is no way to tell before reading the
|
|
// enclosing method attribute.
|
|
TypeVar t = new TypeVar(name, currentOwner, syms.botType);
|
|
missingTypeVariables = missingTypeVariables.prepend(t);
|
|
// System.err.println("Missing type var " + name);
|
|
return t;
|
|
}
|
|
throw badClassFile("undecl.type.var", name);
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
* Reading Attributes
|
|
***********************************************************************/
|
|
|
|
protected enum AttributeKind { CLASS, MEMBER };
|
|
protected abstract class AttributeReader {
|
|
protected AttributeReader(Name name, ClassFile.Version version, Set<AttributeKind> kinds) {
|
|
this.name = name;
|
|
this.version = version;
|
|
this.kinds = kinds;
|
|
}
|
|
|
|
protected boolean accepts(AttributeKind kind) {
|
|
if (kinds.contains(kind)) {
|
|
if (majorVersion > version.major || (majorVersion == version.major && minorVersion >= version.minor))
|
|
return true;
|
|
|
|
if (lintClassfile && !warnedAttrs.contains(name)) {
|
|
JavaFileObject prev = log.useSource(currentClassFile);
|
|
try {
|
|
log.warning(LintCategory.CLASSFILE, (DiagnosticPosition) null, "future.attr",
|
|
name, version.major, version.minor, majorVersion, minorVersion);
|
|
} finally {
|
|
log.useSource(prev);
|
|
}
|
|
warnedAttrs.add(name);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
protected abstract void read(Symbol sym, int attrLen);
|
|
|
|
protected final Name name;
|
|
protected final ClassFile.Version version;
|
|
protected final Set<AttributeKind> kinds;
|
|
}
|
|
|
|
protected Set<AttributeKind> CLASS_ATTRIBUTE =
|
|
EnumSet.of(AttributeKind.CLASS);
|
|
protected Set<AttributeKind> MEMBER_ATTRIBUTE =
|
|
EnumSet.of(AttributeKind.MEMBER);
|
|
protected Set<AttributeKind> CLASS_OR_MEMBER_ATTRIBUTE =
|
|
EnumSet.of(AttributeKind.CLASS, AttributeKind.MEMBER);
|
|
|
|
protected Map<Name, AttributeReader> attributeReaders = new HashMap<Name, AttributeReader>();
|
|
|
|
private void initAttributeReaders() {
|
|
AttributeReader[] readers = {
|
|
// v45.3 attributes
|
|
|
|
new AttributeReader(names.Code, V45_3, MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
if (readAllOfClassFile || saveParameterNames)
|
|
((MethodSymbol)sym).code = readCode(sym);
|
|
else
|
|
bp = bp + attrLen;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.ConstantValue, V45_3, MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
Object v = readPool(nextChar());
|
|
// Ignore ConstantValue attribute if field not final.
|
|
if ((sym.flags() & FINAL) != 0)
|
|
((VarSymbol) sym).setData(v);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Deprecated, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
sym.flags_field |= DEPRECATED;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Exceptions, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
int nexceptions = nextChar();
|
|
List<Type> thrown = List.nil();
|
|
for (int j = 0; j < nexceptions; j++)
|
|
thrown = thrown.prepend(readClassSymbol(nextChar()).type);
|
|
if (sym.type.getThrownTypes().isEmpty())
|
|
sym.type.asMethodType().thrown = thrown.reverse();
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.InnerClasses, V45_3, CLASS_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
ClassSymbol c = (ClassSymbol) sym;
|
|
readInnerClasses(c);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.LocalVariableTable, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
int newbp = bp + attrLen;
|
|
if (saveParameterNames && !sawMethodParameters) {
|
|
// Pick up parameter names from the variable table.
|
|
// Parameter names are not explicitly identified as such,
|
|
// but all parameter name entries in the LocalVariableTable
|
|
// have a start_pc of 0. Therefore, we record the name
|
|
// indicies of all slots with a start_pc of zero in the
|
|
// parameterNameIndicies array.
|
|
// Note that this implicitly honors the JVMS spec that
|
|
// there may be more than one LocalVariableTable, and that
|
|
// there is no specified ordering for the entries.
|
|
int numEntries = nextChar();
|
|
for (int i = 0; i < numEntries; i++) {
|
|
int start_pc = nextChar();
|
|
int length = nextChar();
|
|
int nameIndex = nextChar();
|
|
int sigIndex = nextChar();
|
|
int register = nextChar();
|
|
if (start_pc == 0) {
|
|
// ensure array large enough
|
|
if (register >= parameterNameIndices.length) {
|
|
int newSize = Math.max(register, parameterNameIndices.length + 8);
|
|
parameterNameIndices =
|
|
Arrays.copyOf(parameterNameIndices, newSize);
|
|
}
|
|
parameterNameIndices[register] = nameIndex;
|
|
haveParameterNameIndices = true;
|
|
}
|
|
}
|
|
}
|
|
bp = newbp;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.MethodParameters, V52, MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrlen) {
|
|
int newbp = bp + attrlen;
|
|
if (saveParameterNames) {
|
|
sawMethodParameters = true;
|
|
int numEntries = nextByte();
|
|
parameterNameIndices = new int[numEntries];
|
|
haveParameterNameIndices = true;
|
|
for (int i = 0; i < numEntries; i++) {
|
|
int nameIndex = nextChar();
|
|
int flags = nextChar();
|
|
parameterNameIndices[i] = nameIndex;
|
|
}
|
|
}
|
|
bp = newbp;
|
|
}
|
|
},
|
|
|
|
|
|
new AttributeReader(names.SourceFile, V45_3, CLASS_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
ClassSymbol c = (ClassSymbol) sym;
|
|
Name n = readName(nextChar());
|
|
c.sourcefile = new SourceFileObject(n, c.flatname);
|
|
// If the class is a toplevel class, originating from a Java source file,
|
|
// but the class name does not match the file name, then it is
|
|
// an auxiliary class.
|
|
String sn = n.toString();
|
|
if (c.owner.kind == Kinds.PCK &&
|
|
sn.endsWith(".java") &&
|
|
!sn.equals(c.name.toString()+".java")) {
|
|
c.flags_field |= AUXILIARY;
|
|
}
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Synthetic, V45_3, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
// bridge methods are visible when generics not enabled
|
|
if (allowGenerics || (sym.flags_field & BRIDGE) == 0)
|
|
sym.flags_field |= SYNTHETIC;
|
|
}
|
|
},
|
|
|
|
// standard v49 attributes
|
|
|
|
new AttributeReader(names.EnclosingMethod, V49, CLASS_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
int newbp = bp + attrLen;
|
|
readEnclosingMethodAttr(sym);
|
|
bp = newbp;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Signature, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
@Override
|
|
protected boolean accepts(AttributeKind kind) {
|
|
return super.accepts(kind) && allowGenerics;
|
|
}
|
|
|
|
protected void read(Symbol sym, int attrLen) {
|
|
if (sym.kind == TYP) {
|
|
ClassSymbol c = (ClassSymbol) sym;
|
|
readingClassAttr = true;
|
|
try {
|
|
ClassType ct1 = (ClassType)c.type;
|
|
Assert.check(c == currentOwner);
|
|
ct1.typarams_field = readTypeParams(nextChar());
|
|
ct1.supertype_field = sigToType();
|
|
ListBuffer<Type> is = new ListBuffer<Type>();
|
|
while (sigp != siglimit) is.append(sigToType());
|
|
ct1.interfaces_field = is.toList();
|
|
} finally {
|
|
readingClassAttr = false;
|
|
}
|
|
} else {
|
|
List<Type> thrown = sym.type.getThrownTypes();
|
|
sym.type = readType(nextChar());
|
|
//- System.err.println(" # " + sym.type);
|
|
if (sym.kind == MTH && sym.type.getThrownTypes().isEmpty())
|
|
sym.type.asMethodType().thrown = thrown;
|
|
|
|
}
|
|
}
|
|
},
|
|
|
|
// v49 annotation attributes
|
|
|
|
new AttributeReader(names.AnnotationDefault, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachAnnotationDefault(sym);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.RuntimeInvisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachAnnotations(sym);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.RuntimeInvisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachParameterAnnotations(sym);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.RuntimeVisibleAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachAnnotations(sym);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.RuntimeVisibleParameterAnnotations, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachParameterAnnotations(sym);
|
|
}
|
|
},
|
|
|
|
// additional "legacy" v49 attributes, superceded by flags
|
|
|
|
new AttributeReader(names.Annotation, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
if (allowAnnotations)
|
|
sym.flags_field |= ANNOTATION;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Bridge, V49, MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
sym.flags_field |= BRIDGE;
|
|
if (!allowGenerics)
|
|
sym.flags_field &= ~SYNTHETIC;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Enum, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
sym.flags_field |= ENUM;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.Varargs, V49, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
if (allowVarargs)
|
|
sym.flags_field |= VARARGS;
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.RuntimeVisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachTypeAnnotations(sym);
|
|
}
|
|
},
|
|
|
|
new AttributeReader(names.RuntimeInvisibleTypeAnnotations, V52, CLASS_OR_MEMBER_ATTRIBUTE) {
|
|
protected void read(Symbol sym, int attrLen) {
|
|
attachTypeAnnotations(sym);
|
|
}
|
|
},
|
|
|
|
|
|
// The following attributes for a Code attribute are not currently handled
|
|
// StackMapTable
|
|
// SourceDebugExtension
|
|
// LineNumberTable
|
|
// LocalVariableTypeTable
|
|
};
|
|
|
|
for (AttributeReader r: readers)
|
|
attributeReaders.put(r.name, r);
|
|
}
|
|
|
|
/** Report unrecognized attribute.
|
|
*/
|
|
void unrecognized(Name attrName) {
|
|
if (checkClassFile)
|
|
printCCF("ccf.unrecognized.attribute", attrName);
|
|
}
|
|
|
|
|
|
|
|
protected void readEnclosingMethodAttr(Symbol sym) {
|
|
// sym is a nested class with an "Enclosing Method" attribute
|
|
// remove sym from it's current owners scope and place it in
|
|
// the scope specified by the attribute
|
|
sym.owner.members().remove(sym);
|
|
ClassSymbol self = (ClassSymbol)sym;
|
|
ClassSymbol c = readClassSymbol(nextChar());
|
|
NameAndType nt = readNameAndType(nextChar());
|
|
|
|
if (c.members_field == null)
|
|
throw badClassFile("bad.enclosing.class", self, c);
|
|
|
|
MethodSymbol m = findMethod(nt, c.members_field, self.flags());
|
|
if (nt != null && m == null)
|
|
throw badClassFile("bad.enclosing.method", self);
|
|
|
|
self.name = simpleBinaryName(self.flatname, c.flatname) ;
|
|
self.owner = m != null ? m : c;
|
|
if (self.name.isEmpty())
|
|
self.fullname = names.empty;
|
|
else
|
|
self.fullname = ClassSymbol.formFullName(self.name, self.owner);
|
|
|
|
if (m != null) {
|
|
((ClassType)sym.type).setEnclosingType(m.type);
|
|
} else if ((self.flags_field & STATIC) == 0) {
|
|
((ClassType)sym.type).setEnclosingType(c.type);
|
|
} else {
|
|
((ClassType)sym.type).setEnclosingType(Type.noType);
|
|
}
|
|
enterTypevars(self);
|
|
if (!missingTypeVariables.isEmpty()) {
|
|
ListBuffer<Type> typeVars = new ListBuffer<Type>();
|
|
for (Type typevar : missingTypeVariables) {
|
|
typeVars.append(findTypeVar(typevar.tsym.name));
|
|
}
|
|
foundTypeVariables = typeVars.toList();
|
|
} else {
|
|
foundTypeVariables = List.nil();
|
|
}
|
|
}
|
|
|
|
// See java.lang.Class
|
|
private Name simpleBinaryName(Name self, Name enclosing) {
|
|
String simpleBinaryName = self.toString().substring(enclosing.toString().length());
|
|
if (simpleBinaryName.length() < 1 || simpleBinaryName.charAt(0) != '$')
|
|
throw badClassFile("bad.enclosing.method", self);
|
|
int index = 1;
|
|
while (index < simpleBinaryName.length() &&
|
|
isAsciiDigit(simpleBinaryName.charAt(index)))
|
|
index++;
|
|
return names.fromString(simpleBinaryName.substring(index));
|
|
}
|
|
|
|
private MethodSymbol findMethod(NameAndType nt, Scope scope, long flags) {
|
|
if (nt == null)
|
|
return null;
|
|
|
|
MethodType type = nt.uniqueType.type.asMethodType();
|
|
|
|
for (Scope.Entry e = scope.lookup(nt.name); e.scope != null; e = e.next())
|
|
if (e.sym.kind == MTH && isSameBinaryType(e.sym.type.asMethodType(), type))
|
|
return (MethodSymbol)e.sym;
|
|
|
|
if (nt.name != names.init)
|
|
// not a constructor
|
|
return null;
|
|
if ((flags & INTERFACE) != 0)
|
|
// no enclosing instance
|
|
return null;
|
|
if (nt.uniqueType.type.getParameterTypes().isEmpty())
|
|
// no parameters
|
|
return null;
|
|
|
|
// A constructor of an inner class.
|
|
// Remove the first argument (the enclosing instance)
|
|
nt.setType(new MethodType(nt.uniqueType.type.getParameterTypes().tail,
|
|
nt.uniqueType.type.getReturnType(),
|
|
nt.uniqueType.type.getThrownTypes(),
|
|
syms.methodClass));
|
|
// Try searching again
|
|
return findMethod(nt, scope, flags);
|
|
}
|
|
|
|
/** Similar to Types.isSameType but avoids completion */
|
|
private boolean isSameBinaryType(MethodType mt1, MethodType mt2) {
|
|
List<Type> types1 = types.erasure(mt1.getParameterTypes())
|
|
.prepend(types.erasure(mt1.getReturnType()));
|
|
List<Type> types2 = mt2.getParameterTypes().prepend(mt2.getReturnType());
|
|
while (!types1.isEmpty() && !types2.isEmpty()) {
|
|
if (types1.head.tsym != types2.head.tsym)
|
|
return false;
|
|
types1 = types1.tail;
|
|
types2 = types2.tail;
|
|
}
|
|
return types1.isEmpty() && types2.isEmpty();
|
|
}
|
|
|
|
/**
|
|
* Character.isDigit answers <tt>true</tt> to some non-ascii
|
|
* digits. This one does not. <b>copied from java.lang.Class</b>
|
|
*/
|
|
private static boolean isAsciiDigit(char c) {
|
|
return '0' <= c && c <= '9';
|
|
}
|
|
|
|
/** Read member attributes.
|
|
*/
|
|
void readMemberAttrs(Symbol sym) {
|
|
readAttrs(sym, AttributeKind.MEMBER);
|
|
}
|
|
|
|
void readAttrs(Symbol sym, AttributeKind kind) {
|
|
char ac = nextChar();
|
|
for (int i = 0; i < ac; i++) {
|
|
Name attrName = readName(nextChar());
|
|
int attrLen = nextInt();
|
|
AttributeReader r = attributeReaders.get(attrName);
|
|
if (r != null && r.accepts(kind))
|
|
r.read(sym, attrLen);
|
|
else {
|
|
unrecognized(attrName);
|
|
bp = bp + attrLen;
|
|
}
|
|
}
|
|
}
|
|
|
|
private boolean readingClassAttr = false;
|
|
private List<Type> missingTypeVariables = List.nil();
|
|
private List<Type> foundTypeVariables = List.nil();
|
|
|
|
/** Read class attributes.
|
|
*/
|
|
void readClassAttrs(ClassSymbol c) {
|
|
readAttrs(c, AttributeKind.CLASS);
|
|
}
|
|
|
|
/** Read code block.
|
|
*/
|
|
Code readCode(Symbol owner) {
|
|
nextChar(); // max_stack
|
|
nextChar(); // max_locals
|
|
final int code_length = nextInt();
|
|
bp += code_length;
|
|
final char exception_table_length = nextChar();
|
|
bp += exception_table_length * 8;
|
|
readMemberAttrs(owner);
|
|
return null;
|
|
}
|
|
|
|
/************************************************************************
|
|
* Reading Java-language annotations
|
|
***********************************************************************/
|
|
|
|
/** Attach annotations.
|
|
*/
|
|
void attachAnnotations(final Symbol sym) {
|
|
int numAttributes = nextChar();
|
|
if (numAttributes != 0) {
|
|
ListBuffer<CompoundAnnotationProxy> proxies =
|
|
new ListBuffer<CompoundAnnotationProxy>();
|
|
for (int i = 0; i<numAttributes; i++) {
|
|
CompoundAnnotationProxy proxy = readCompoundAnnotation();
|
|
if (proxy.type.tsym == syms.proprietaryType.tsym)
|
|
sym.flags_field |= PROPRIETARY;
|
|
else if (proxy.type.tsym == syms.profileType.tsym) {
|
|
if (profile != Profile.DEFAULT) {
|
|
for (Pair<Name,Attribute> v: proxy.values) {
|
|
if (v.fst == names.value && v.snd instanceof Attribute.Constant) {
|
|
Attribute.Constant c = (Attribute.Constant) v.snd;
|
|
if (c.type == syms.intType && ((Integer) c.value) > profile.value) {
|
|
sym.flags_field |= NOT_IN_PROFILE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else
|
|
proxies.append(proxy);
|
|
}
|
|
annotate.normal(new AnnotationCompleter(sym, proxies.toList()));
|
|
}
|
|
}
|
|
|
|
/** Attach parameter annotations.
|
|
*/
|
|
void attachParameterAnnotations(final Symbol method) {
|
|
final MethodSymbol meth = (MethodSymbol)method;
|
|
int numParameters = buf[bp++] & 0xFF;
|
|
List<VarSymbol> parameters = meth.params();
|
|
int pnum = 0;
|
|
while (parameters.tail != null) {
|
|
attachAnnotations(parameters.head);
|
|
parameters = parameters.tail;
|
|
pnum++;
|
|
}
|
|
if (pnum != numParameters) {
|
|
throw badClassFile("bad.runtime.invisible.param.annotations", meth);
|
|
}
|
|
}
|
|
|
|
void attachTypeAnnotations(final Symbol sym) {
|
|
int numAttributes = nextChar();
|
|
if (numAttributes != 0) {
|
|
ListBuffer<TypeAnnotationProxy> proxies = new ListBuffer<>();
|
|
for (int i = 0; i < numAttributes; i++)
|
|
proxies.append(readTypeAnnotation());
|
|
annotate.normal(new TypeAnnotationCompleter(sym, proxies.toList()));
|
|
}
|
|
}
|
|
|
|
/** Attach the default value for an annotation element.
|
|
*/
|
|
void attachAnnotationDefault(final Symbol sym) {
|
|
final MethodSymbol meth = (MethodSymbol)sym; // only on methods
|
|
final Attribute value = readAttributeValue();
|
|
|
|
// The default value is set later during annotation. It might
|
|
// be the case that the Symbol sym is annotated _after_ the
|
|
// repeating instances that depend on this default value,
|
|
// because of this we set an interim value that tells us this
|
|
// element (most likely) has a default.
|
|
//
|
|
// Set interim value for now, reset just before we do this
|
|
// properly at annotate time.
|
|
meth.defaultValue = value;
|
|
annotate.normal(new AnnotationDefaultCompleter(meth, value));
|
|
}
|
|
|
|
Type readTypeOrClassSymbol(int i) {
|
|
// support preliminary jsr175-format class files
|
|
if (buf[poolIdx[i]] == CONSTANT_Class)
|
|
return readClassSymbol(i).type;
|
|
return readType(i);
|
|
}
|
|
Type readEnumType(int i) {
|
|
// support preliminary jsr175-format class files
|
|
int index = poolIdx[i];
|
|
int length = getChar(index + 1);
|
|
if (buf[index + length + 2] != ';')
|
|
return enterClass(readName(i)).type;
|
|
return readType(i);
|
|
}
|
|
|
|
CompoundAnnotationProxy readCompoundAnnotation() {
|
|
Type t = readTypeOrClassSymbol(nextChar());
|
|
int numFields = nextChar();
|
|
ListBuffer<Pair<Name,Attribute>> pairs =
|
|
new ListBuffer<Pair<Name,Attribute>>();
|
|
for (int i=0; i<numFields; i++) {
|
|
Name name = readName(nextChar());
|
|
Attribute value = readAttributeValue();
|
|
pairs.append(new Pair<Name,Attribute>(name, value));
|
|
}
|
|
return new CompoundAnnotationProxy(t, pairs.toList());
|
|
}
|
|
|
|
TypeAnnotationProxy readTypeAnnotation() {
|
|
TypeAnnotationPosition position = readPosition();
|
|
CompoundAnnotationProxy proxy = readCompoundAnnotation();
|
|
|
|
return new TypeAnnotationProxy(proxy, position);
|
|
}
|
|
|
|
TypeAnnotationPosition readPosition() {
|
|
int tag = nextByte(); // TargetType tag is a byte
|
|
|
|
if (!TargetType.isValidTargetTypeValue(tag))
|
|
throw this.badClassFile("bad.type.annotation.value", String.format("0x%02X", tag));
|
|
|
|
TypeAnnotationPosition position = new TypeAnnotationPosition();
|
|
TargetType type = TargetType.fromTargetTypeValue(tag);
|
|
|
|
position.type = type;
|
|
|
|
switch (type) {
|
|
// instanceof
|
|
case INSTANCEOF:
|
|
// new expression
|
|
case NEW:
|
|
// constructor/method reference receiver
|
|
case CONSTRUCTOR_REFERENCE:
|
|
case METHOD_REFERENCE:
|
|
position.offset = nextChar();
|
|
break;
|
|
// local variable
|
|
case LOCAL_VARIABLE:
|
|
// resource variable
|
|
case RESOURCE_VARIABLE:
|
|
int table_length = nextChar();
|
|
position.lvarOffset = new int[table_length];
|
|
position.lvarLength = new int[table_length];
|
|
position.lvarIndex = new int[table_length];
|
|
|
|
for (int i = 0; i < table_length; ++i) {
|
|
position.lvarOffset[i] = nextChar();
|
|
position.lvarLength[i] = nextChar();
|
|
position.lvarIndex[i] = nextChar();
|
|
}
|
|
break;
|
|
// exception parameter
|
|
case EXCEPTION_PARAMETER:
|
|
position.exception_index = nextChar();
|
|
break;
|
|
// method receiver
|
|
case METHOD_RECEIVER:
|
|
// Do nothing
|
|
break;
|
|
// type parameter
|
|
case CLASS_TYPE_PARAMETER:
|
|
case METHOD_TYPE_PARAMETER:
|
|
position.parameter_index = nextByte();
|
|
break;
|
|
// type parameter bound
|
|
case CLASS_TYPE_PARAMETER_BOUND:
|
|
case METHOD_TYPE_PARAMETER_BOUND:
|
|
position.parameter_index = nextByte();
|
|
position.bound_index = nextByte();
|
|
break;
|
|
// class extends or implements clause
|
|
case CLASS_EXTENDS:
|
|
position.type_index = nextChar();
|
|
break;
|
|
// throws
|
|
case THROWS:
|
|
position.type_index = nextChar();
|
|
break;
|
|
// method parameter
|
|
case METHOD_FORMAL_PARAMETER:
|
|
position.parameter_index = nextByte();
|
|
break;
|
|
// type cast
|
|
case CAST:
|
|
// method/constructor/reference type argument
|
|
case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
|
|
case METHOD_INVOCATION_TYPE_ARGUMENT:
|
|
case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
|
|
case METHOD_REFERENCE_TYPE_ARGUMENT:
|
|
position.offset = nextChar();
|
|
position.type_index = nextByte();
|
|
break;
|
|
// We don't need to worry about these
|
|
case METHOD_RETURN:
|
|
case FIELD:
|
|
break;
|
|
case UNKNOWN:
|
|
throw new AssertionError("jvm.ClassReader: UNKNOWN target type should never occur!");
|
|
default:
|
|
throw new AssertionError("jvm.ClassReader: Unknown target type for position: " + position);
|
|
}
|
|
|
|
{ // See whether there is location info and read it
|
|
int len = nextByte();
|
|
ListBuffer<Integer> loc = new ListBuffer<>();
|
|
for (int i = 0; i < len * TypeAnnotationPosition.TypePathEntry.bytesPerEntry; ++i)
|
|
loc = loc.append(nextByte());
|
|
position.location = TypeAnnotationPosition.getTypePathFromBinary(loc.toList());
|
|
}
|
|
|
|
return position;
|
|
}
|
|
|
|
Attribute readAttributeValue() {
|
|
char c = (char) buf[bp++];
|
|
switch (c) {
|
|
case 'B':
|
|
return new Attribute.Constant(syms.byteType, readPool(nextChar()));
|
|
case 'C':
|
|
return new Attribute.Constant(syms.charType, readPool(nextChar()));
|
|
case 'D':
|
|
return new Attribute.Constant(syms.doubleType, readPool(nextChar()));
|
|
case 'F':
|
|
return new Attribute.Constant(syms.floatType, readPool(nextChar()));
|
|
case 'I':
|
|
return new Attribute.Constant(syms.intType, readPool(nextChar()));
|
|
case 'J':
|
|
return new Attribute.Constant(syms.longType, readPool(nextChar()));
|
|
case 'S':
|
|
return new Attribute.Constant(syms.shortType, readPool(nextChar()));
|
|
case 'Z':
|
|
return new Attribute.Constant(syms.booleanType, readPool(nextChar()));
|
|
case 's':
|
|
return new Attribute.Constant(syms.stringType, readPool(nextChar()).toString());
|
|
case 'e':
|
|
return new EnumAttributeProxy(readEnumType(nextChar()), readName(nextChar()));
|
|
case 'c':
|
|
return new Attribute.Class(types, readTypeOrClassSymbol(nextChar()));
|
|
case '[': {
|
|
int n = nextChar();
|
|
ListBuffer<Attribute> l = new ListBuffer<Attribute>();
|
|
for (int i=0; i<n; i++)
|
|
l.append(readAttributeValue());
|
|
return new ArrayAttributeProxy(l.toList());
|
|
}
|
|
case '@':
|
|
return readCompoundAnnotation();
|
|
default:
|
|
throw new AssertionError("unknown annotation tag '" + c + "'");
|
|
}
|
|
}
|
|
|
|
interface ProxyVisitor extends Attribute.Visitor {
|
|
void visitEnumAttributeProxy(EnumAttributeProxy proxy);
|
|
void visitArrayAttributeProxy(ArrayAttributeProxy proxy);
|
|
void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy);
|
|
}
|
|
|
|
static class EnumAttributeProxy extends Attribute {
|
|
Type enumType;
|
|
Name enumerator;
|
|
public EnumAttributeProxy(Type enumType, Name enumerator) {
|
|
super(null);
|
|
this.enumType = enumType;
|
|
this.enumerator = enumerator;
|
|
}
|
|
public void accept(Visitor v) { ((ProxyVisitor)v).visitEnumAttributeProxy(this); }
|
|
@Override
|
|
public String toString() {
|
|
return "/*proxy enum*/" + enumType + "." + enumerator;
|
|
}
|
|
}
|
|
|
|
static class ArrayAttributeProxy extends Attribute {
|
|
List<Attribute> values;
|
|
ArrayAttributeProxy(List<Attribute> values) {
|
|
super(null);
|
|
this.values = values;
|
|
}
|
|
public void accept(Visitor v) { ((ProxyVisitor)v).visitArrayAttributeProxy(this); }
|
|
@Override
|
|
public String toString() {
|
|
return "{" + values + "}";
|
|
}
|
|
}
|
|
|
|
/** A temporary proxy representing a compound attribute.
|
|
*/
|
|
static class CompoundAnnotationProxy extends Attribute {
|
|
final List<Pair<Name,Attribute>> values;
|
|
public CompoundAnnotationProxy(Type type,
|
|
List<Pair<Name,Attribute>> values) {
|
|
super(type);
|
|
this.values = values;
|
|
}
|
|
public void accept(Visitor v) { ((ProxyVisitor)v).visitCompoundAnnotationProxy(this); }
|
|
@Override
|
|
public String toString() {
|
|
StringBuilder buf = new StringBuilder();
|
|
buf.append("@");
|
|
buf.append(type.tsym.getQualifiedName());
|
|
buf.append("/*proxy*/{");
|
|
boolean first = true;
|
|
for (List<Pair<Name,Attribute>> v = values;
|
|
v.nonEmpty(); v = v.tail) {
|
|
Pair<Name,Attribute> value = v.head;
|
|
if (!first) buf.append(",");
|
|
first = false;
|
|
buf.append(value.fst);
|
|
buf.append("=");
|
|
buf.append(value.snd);
|
|
}
|
|
buf.append("}");
|
|
return buf.toString();
|
|
}
|
|
}
|
|
|
|
/** A temporary proxy representing a type annotation.
|
|
*/
|
|
static class TypeAnnotationProxy {
|
|
final CompoundAnnotationProxy compound;
|
|
final TypeAnnotationPosition position;
|
|
public TypeAnnotationProxy(CompoundAnnotationProxy compound,
|
|
TypeAnnotationPosition position) {
|
|
this.compound = compound;
|
|
this.position = position;
|
|
}
|
|
}
|
|
|
|
class AnnotationDeproxy implements ProxyVisitor {
|
|
private ClassSymbol requestingOwner = currentOwner.kind == MTH
|
|
? currentOwner.enclClass() : (ClassSymbol)currentOwner;
|
|
|
|
List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
|
|
// also must fill in types!!!!
|
|
ListBuffer<Attribute.Compound> buf =
|
|
new ListBuffer<Attribute.Compound>();
|
|
for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
|
|
buf.append(deproxyCompound(l.head));
|
|
}
|
|
return buf.toList();
|
|
}
|
|
|
|
Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
|
|
ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf =
|
|
new ListBuffer<Pair<Symbol.MethodSymbol,Attribute>>();
|
|
for (List<Pair<Name,Attribute>> l = a.values;
|
|
l.nonEmpty();
|
|
l = l.tail) {
|
|
MethodSymbol meth = findAccessMethod(a.type, l.head.fst);
|
|
buf.append(new Pair<Symbol.MethodSymbol,Attribute>
|
|
(meth, deproxy(meth.type.getReturnType(), l.head.snd)));
|
|
}
|
|
return new Attribute.Compound(a.type, buf.toList());
|
|
}
|
|
|
|
MethodSymbol findAccessMethod(Type container, Name name) {
|
|
CompletionFailure failure = null;
|
|
try {
|
|
for (Scope.Entry e = container.tsym.members().lookup(name);
|
|
e.scope != null;
|
|
e = e.next()) {
|
|
Symbol sym = e.sym;
|
|
if (sym.kind == MTH && sym.type.getParameterTypes().length() == 0)
|
|
return (MethodSymbol) sym;
|
|
}
|
|
} catch (CompletionFailure ex) {
|
|
failure = ex;
|
|
}
|
|
// The method wasn't found: emit a warning and recover
|
|
JavaFileObject prevSource = log.useSource(requestingOwner.classfile);
|
|
try {
|
|
if (lintClassfile) {
|
|
if (failure == null) {
|
|
log.warning("annotation.method.not.found",
|
|
container,
|
|
name);
|
|
} else {
|
|
log.warning("annotation.method.not.found.reason",
|
|
container,
|
|
name,
|
|
failure.getDetailValue()); //diagnostic, if present
|
|
}
|
|
}
|
|
} finally {
|
|
log.useSource(prevSource);
|
|
}
|
|
// Construct a new method type and symbol. Use bottom
|
|
// type (typeof null) as return type because this type is
|
|
// a subtype of all reference types and can be converted
|
|
// to primitive types by unboxing.
|
|
MethodType mt = new MethodType(List.<Type>nil(),
|
|
syms.botType,
|
|
List.<Type>nil(),
|
|
syms.methodClass);
|
|
return new MethodSymbol(PUBLIC | ABSTRACT, name, mt, container.tsym);
|
|
}
|
|
|
|
Attribute result;
|
|
Type type;
|
|
Attribute deproxy(Type t, Attribute a) {
|
|
Type oldType = type;
|
|
try {
|
|
type = t;
|
|
a.accept(this);
|
|
return result;
|
|
} finally {
|
|
type = oldType;
|
|
}
|
|
}
|
|
|
|
// implement Attribute.Visitor below
|
|
|
|
public void visitConstant(Attribute.Constant value) {
|
|
// assert value.type == type;
|
|
result = value;
|
|
}
|
|
|
|
public void visitClass(Attribute.Class clazz) {
|
|
result = clazz;
|
|
}
|
|
|
|
public void visitEnum(Attribute.Enum e) {
|
|
throw new AssertionError(); // shouldn't happen
|
|
}
|
|
|
|
public void visitCompound(Attribute.Compound compound) {
|
|
throw new AssertionError(); // shouldn't happen
|
|
}
|
|
|
|
public void visitArray(Attribute.Array array) {
|
|
throw new AssertionError(); // shouldn't happen
|
|
}
|
|
|
|
public void visitError(Attribute.Error e) {
|
|
throw new AssertionError(); // shouldn't happen
|
|
}
|
|
|
|
public void visitEnumAttributeProxy(EnumAttributeProxy proxy) {
|
|
// type.tsym.flatName() should == proxy.enumFlatName
|
|
TypeSymbol enumTypeSym = proxy.enumType.tsym;
|
|
VarSymbol enumerator = null;
|
|
CompletionFailure failure = null;
|
|
try {
|
|
for (Scope.Entry e = enumTypeSym.members().lookup(proxy.enumerator);
|
|
e.scope != null;
|
|
e = e.next()) {
|
|
if (e.sym.kind == VAR) {
|
|
enumerator = (VarSymbol)e.sym;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
catch (CompletionFailure ex) {
|
|
failure = ex;
|
|
}
|
|
if (enumerator == null) {
|
|
if (failure != null) {
|
|
log.warning("unknown.enum.constant.reason",
|
|
currentClassFile, enumTypeSym, proxy.enumerator,
|
|
failure.getDiagnostic());
|
|
} else {
|
|
log.warning("unknown.enum.constant",
|
|
currentClassFile, enumTypeSym, proxy.enumerator);
|
|
}
|
|
result = new Attribute.Enum(enumTypeSym.type,
|
|
new VarSymbol(0, proxy.enumerator, syms.botType, enumTypeSym));
|
|
} else {
|
|
result = new Attribute.Enum(enumTypeSym.type, enumerator);
|
|
}
|
|
}
|
|
|
|
public void visitArrayAttributeProxy(ArrayAttributeProxy proxy) {
|
|
int length = proxy.values.length();
|
|
Attribute[] ats = new Attribute[length];
|
|
Type elemtype = types.elemtype(type);
|
|
int i = 0;
|
|
for (List<Attribute> p = proxy.values; p.nonEmpty(); p = p.tail) {
|
|
ats[i++] = deproxy(elemtype, p.head);
|
|
}
|
|
result = new Attribute.Array(type, ats);
|
|
}
|
|
|
|
public void visitCompoundAnnotationProxy(CompoundAnnotationProxy proxy) {
|
|
result = deproxyCompound(proxy);
|
|
}
|
|
}
|
|
|
|
class AnnotationDefaultCompleter extends AnnotationDeproxy implements Annotate.Worker {
|
|
final MethodSymbol sym;
|
|
final Attribute value;
|
|
final JavaFileObject classFile = currentClassFile;
|
|
@Override
|
|
public String toString() {
|
|
return " ClassReader store default for " + sym.owner + "." + sym + " is " + value;
|
|
}
|
|
AnnotationDefaultCompleter(MethodSymbol sym, Attribute value) {
|
|
this.sym = sym;
|
|
this.value = value;
|
|
}
|
|
// implement Annotate.Worker.run()
|
|
public void run() {
|
|
JavaFileObject previousClassFile = currentClassFile;
|
|
try {
|
|
// Reset the interim value set earlier in
|
|
// attachAnnotationDefault().
|
|
sym.defaultValue = null;
|
|
currentClassFile = classFile;
|
|
sym.defaultValue = deproxy(sym.type.getReturnType(), value);
|
|
} finally {
|
|
currentClassFile = previousClassFile;
|
|
}
|
|
}
|
|
}
|
|
|
|
class AnnotationCompleter extends AnnotationDeproxy implements Annotate.Worker {
|
|
final Symbol sym;
|
|
final List<CompoundAnnotationProxy> l;
|
|
final JavaFileObject classFile;
|
|
@Override
|
|
public String toString() {
|
|
return " ClassReader annotate " + sym.owner + "." + sym + " with " + l;
|
|
}
|
|
AnnotationCompleter(Symbol sym, List<CompoundAnnotationProxy> l) {
|
|
this.sym = sym;
|
|
this.l = l;
|
|
this.classFile = currentClassFile;
|
|
}
|
|
// implement Annotate.Worker.run()
|
|
public void run() {
|
|
JavaFileObject previousClassFile = currentClassFile;
|
|
try {
|
|
currentClassFile = classFile;
|
|
List<Attribute.Compound> newList = deproxyCompoundList(l);
|
|
if (sym.annotationsPendingCompletion()) {
|
|
sym.setDeclarationAttributes(newList);
|
|
} else {
|
|
sym.appendAttributes(newList);
|
|
}
|
|
} finally {
|
|
currentClassFile = previousClassFile;
|
|
}
|
|
}
|
|
}
|
|
|
|
class TypeAnnotationCompleter extends AnnotationCompleter {
|
|
|
|
List<TypeAnnotationProxy> proxies;
|
|
|
|
TypeAnnotationCompleter(Symbol sym,
|
|
List<TypeAnnotationProxy> proxies) {
|
|
super(sym, List.<CompoundAnnotationProxy>nil());
|
|
this.proxies = proxies;
|
|
}
|
|
|
|
List<Attribute.TypeCompound> deproxyTypeCompoundList(List<TypeAnnotationProxy> proxies) {
|
|
ListBuffer<Attribute.TypeCompound> buf = new ListBuffer<>();
|
|
for (TypeAnnotationProxy proxy: proxies) {
|
|
Attribute.Compound compound = deproxyCompound(proxy.compound);
|
|
Attribute.TypeCompound typeCompound = new Attribute.TypeCompound(compound, proxy.position);
|
|
buf.add(typeCompound);
|
|
}
|
|
return buf.toList();
|
|
}
|
|
|
|
@Override
|
|
public void run() {
|
|
JavaFileObject previousClassFile = currentClassFile;
|
|
try {
|
|
currentClassFile = classFile;
|
|
List<Attribute.TypeCompound> newList = deproxyTypeCompoundList(proxies);
|
|
sym.setTypeAttributes(newList.prependList(sym.getRawTypeAttributes()));
|
|
} finally {
|
|
currentClassFile = previousClassFile;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
* Reading Symbols
|
|
***********************************************************************/
|
|
|
|
/** Read a field.
|
|
*/
|
|
VarSymbol readField() {
|
|
long flags = adjustFieldFlags(nextChar());
|
|
Name name = readName(nextChar());
|
|
Type type = readType(nextChar());
|
|
VarSymbol v = new VarSymbol(flags, name, type, currentOwner);
|
|
readMemberAttrs(v);
|
|
return v;
|
|
}
|
|
|
|
/** Read a method.
|
|
*/
|
|
MethodSymbol readMethod() {
|
|
long flags = adjustMethodFlags(nextChar());
|
|
Name name = readName(nextChar());
|
|
Type type = readType(nextChar());
|
|
if (currentOwner.isInterface() &&
|
|
(flags & ABSTRACT) == 0 && !name.equals(names.clinit)) {
|
|
if (majorVersion > Target.JDK1_8.majorVersion ||
|
|
(majorVersion == Target.JDK1_8.majorVersion && minorVersion >= Target.JDK1_8.minorVersion)) {
|
|
if ((flags & STATIC) == 0) {
|
|
currentOwner.flags_field |= DEFAULT;
|
|
flags |= DEFAULT | ABSTRACT;
|
|
}
|
|
} else {
|
|
//protect against ill-formed classfiles
|
|
throw badClassFile((flags & STATIC) == 0 ? "invalid.default.interface" : "invalid.static.interface",
|
|
Integer.toString(majorVersion),
|
|
Integer.toString(minorVersion));
|
|
}
|
|
}
|
|
if (name == names.init && currentOwner.hasOuterInstance()) {
|
|
// Sometimes anonymous classes don't have an outer
|
|
// instance, however, there is no reliable way to tell so
|
|
// we never strip this$n
|
|
if (!currentOwner.name.isEmpty())
|
|
type = new MethodType(adjustMethodParams(flags, type.getParameterTypes()),
|
|
type.getReturnType(),
|
|
type.getThrownTypes(),
|
|
syms.methodClass);
|
|
}
|
|
MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
|
|
if (types.isSignaturePolymorphic(m)) {
|
|
m.flags_field |= SIGNATURE_POLYMORPHIC;
|
|
}
|
|
if (saveParameterNames)
|
|
initParameterNames(m);
|
|
Symbol prevOwner = currentOwner;
|
|
currentOwner = m;
|
|
try {
|
|
readMemberAttrs(m);
|
|
} finally {
|
|
currentOwner = prevOwner;
|
|
}
|
|
if (saveParameterNames)
|
|
setParameterNames(m, type);
|
|
return m;
|
|
}
|
|
|
|
private List<Type> adjustMethodParams(long flags, List<Type> args) {
|
|
boolean isVarargs = (flags & VARARGS) != 0;
|
|
if (isVarargs) {
|
|
Type varargsElem = args.last();
|
|
ListBuffer<Type> adjustedArgs = new ListBuffer<>();
|
|
for (Type t : args) {
|
|
adjustedArgs.append(t != varargsElem ?
|
|
t :
|
|
((ArrayType)t).makeVarargs());
|
|
}
|
|
args = adjustedArgs.toList();
|
|
}
|
|
return args.tail;
|
|
}
|
|
|
|
/**
|
|
* Init the parameter names array.
|
|
* Parameter names are currently inferred from the names in the
|
|
* LocalVariableTable attributes of a Code attribute.
|
|
* (Note: this means parameter names are currently not available for
|
|
* methods without a Code attribute.)
|
|
* This method initializes an array in which to store the name indexes
|
|
* of parameter names found in LocalVariableTable attributes. It is
|
|
* slightly supersized to allow for additional slots with a start_pc of 0.
|
|
*/
|
|
void initParameterNames(MethodSymbol sym) {
|
|
// make allowance for synthetic parameters.
|
|
final int excessSlots = 4;
|
|
int expectedParameterSlots =
|
|
Code.width(sym.type.getParameterTypes()) + excessSlots;
|
|
if (parameterNameIndices == null
|
|
|| parameterNameIndices.length < expectedParameterSlots) {
|
|
parameterNameIndices = new int[expectedParameterSlots];
|
|
} else
|
|
Arrays.fill(parameterNameIndices, 0);
|
|
haveParameterNameIndices = false;
|
|
sawMethodParameters = false;
|
|
}
|
|
|
|
/**
|
|
* Set the parameter names for a symbol from the name index in the
|
|
* parameterNameIndicies array. The type of the symbol may have changed
|
|
* while reading the method attributes (see the Signature attribute).
|
|
* This may be because of generic information or because anonymous
|
|
* synthetic parameters were added. The original type (as read from
|
|
* the method descriptor) is used to help guess the existence of
|
|
* anonymous synthetic parameters.
|
|
* On completion, sym.savedParameter names will either be null (if
|
|
* no parameter names were found in the class file) or will be set to a
|
|
* list of names, one per entry in sym.type.getParameterTypes, with
|
|
* any missing names represented by the empty name.
|
|
*/
|
|
void setParameterNames(MethodSymbol sym, Type jvmType) {
|
|
// if no names were found in the class file, there's nothing more to do
|
|
if (!haveParameterNameIndices)
|
|
return;
|
|
// If we get parameter names from MethodParameters, then we
|
|
// don't need to skip.
|
|
int firstParam = 0;
|
|
if (!sawMethodParameters) {
|
|
firstParam = ((sym.flags() & STATIC) == 0) ? 1 : 0;
|
|
// the code in readMethod may have skipped the first
|
|
// parameter when setting up the MethodType. If so, we
|
|
// make a corresponding allowance here for the position of
|
|
// the first parameter. Note that this assumes the
|
|
// skipped parameter has a width of 1 -- i.e. it is not
|
|
// a double width type (long or double.)
|
|
if (sym.name == names.init && currentOwner.hasOuterInstance()) {
|
|
// Sometimes anonymous classes don't have an outer
|
|
// instance, however, there is no reliable way to tell so
|
|
// we never strip this$n
|
|
if (!currentOwner.name.isEmpty())
|
|
firstParam += 1;
|
|
}
|
|
|
|
if (sym.type != jvmType) {
|
|
// reading the method attributes has caused the
|
|
// symbol's type to be changed. (i.e. the Signature
|
|
// attribute.) This may happen if there are hidden
|
|
// (synthetic) parameters in the descriptor, but not
|
|
// in the Signature. The position of these hidden
|
|
// parameters is unspecified; for now, assume they are
|
|
// at the beginning, and so skip over them. The
|
|
// primary case for this is two hidden parameters
|
|
// passed into Enum constructors.
|
|
int skip = Code.width(jvmType.getParameterTypes())
|
|
- Code.width(sym.type.getParameterTypes());
|
|
firstParam += skip;
|
|
}
|
|
}
|
|
List<Name> paramNames = List.nil();
|
|
int index = firstParam;
|
|
for (Type t: sym.type.getParameterTypes()) {
|
|
int nameIdx = (index < parameterNameIndices.length
|
|
? parameterNameIndices[index] : 0);
|
|
Name name = nameIdx == 0 ? names.empty : readName(nameIdx);
|
|
paramNames = paramNames.prepend(name);
|
|
index += Code.width(t);
|
|
}
|
|
sym.savedParameterNames = paramNames.reverse();
|
|
}
|
|
|
|
/**
|
|
* skip n bytes
|
|
*/
|
|
void skipBytes(int n) {
|
|
bp = bp + n;
|
|
}
|
|
|
|
/** Skip a field or method
|
|
*/
|
|
void skipMember() {
|
|
bp = bp + 6;
|
|
char ac = nextChar();
|
|
for (int i = 0; i < ac; i++) {
|
|
bp = bp + 2;
|
|
int attrLen = nextInt();
|
|
bp = bp + attrLen;
|
|
}
|
|
}
|
|
|
|
/** Enter type variables of this classtype and all enclosing ones in
|
|
* `typevars'.
|
|
*/
|
|
protected void enterTypevars(Type t) {
|
|
if (t.getEnclosingType() != null && t.getEnclosingType().hasTag(CLASS))
|
|
enterTypevars(t.getEnclosingType());
|
|
for (List<Type> xs = t.getTypeArguments(); xs.nonEmpty(); xs = xs.tail)
|
|
typevars.enter(xs.head.tsym);
|
|
}
|
|
|
|
protected void enterTypevars(Symbol sym) {
|
|
if (sym.owner.kind == MTH) {
|
|
enterTypevars(sym.owner);
|
|
enterTypevars(sym.owner.owner);
|
|
}
|
|
enterTypevars(sym.type);
|
|
}
|
|
|
|
/** Read contents of a given class symbol `c'. Both external and internal
|
|
* versions of an inner class are read.
|
|
*/
|
|
void readClass(ClassSymbol c) {
|
|
ClassType ct = (ClassType)c.type;
|
|
|
|
// allocate scope for members
|
|
c.members_field = new Scope(c);
|
|
|
|
// prepare type variable table
|
|
typevars = typevars.dup(currentOwner);
|
|
if (ct.getEnclosingType().hasTag(CLASS))
|
|
enterTypevars(ct.getEnclosingType());
|
|
|
|
// read flags, or skip if this is an inner class
|
|
long flags = adjustClassFlags(nextChar());
|
|
if (c.owner.kind == PCK) c.flags_field = flags;
|
|
|
|
// read own class name and check that it matches
|
|
ClassSymbol self = readClassSymbol(nextChar());
|
|
if (c != self)
|
|
throw badClassFile("class.file.wrong.class",
|
|
self.flatname);
|
|
|
|
// class attributes must be read before class
|
|
// skip ahead to read class attributes
|
|
int startbp = bp;
|
|
nextChar();
|
|
char interfaceCount = nextChar();
|
|
bp += interfaceCount * 2;
|
|
char fieldCount = nextChar();
|
|
for (int i = 0; i < fieldCount; i++) skipMember();
|
|
char methodCount = nextChar();
|
|
for (int i = 0; i < methodCount; i++) skipMember();
|
|
readClassAttrs(c);
|
|
|
|
if (readAllOfClassFile) {
|
|
for (int i = 1; i < poolObj.length; i++) readPool(i);
|
|
c.pool = new Pool(poolObj.length, poolObj, types);
|
|
}
|
|
|
|
// reset and read rest of classinfo
|
|
bp = startbp;
|
|
int n = nextChar();
|
|
if (ct.supertype_field == null)
|
|
ct.supertype_field = (n == 0)
|
|
? Type.noType
|
|
: readClassSymbol(n).erasure(types);
|
|
n = nextChar();
|
|
List<Type> is = List.nil();
|
|
for (int i = 0; i < n; i++) {
|
|
Type _inter = readClassSymbol(nextChar()).erasure(types);
|
|
is = is.prepend(_inter);
|
|
}
|
|
if (ct.interfaces_field == null)
|
|
ct.interfaces_field = is.reverse();
|
|
|
|
Assert.check(fieldCount == nextChar());
|
|
for (int i = 0; i < fieldCount; i++) enterMember(c, readField());
|
|
Assert.check(methodCount == nextChar());
|
|
for (int i = 0; i < methodCount; i++) enterMember(c, readMethod());
|
|
|
|
typevars = typevars.leave();
|
|
}
|
|
|
|
/** Read inner class info. For each inner/outer pair allocate a
|
|
* member class.
|
|
*/
|
|
void readInnerClasses(ClassSymbol c) {
|
|
int n = nextChar();
|
|
for (int i = 0; i < n; i++) {
|
|
nextChar(); // skip inner class symbol
|
|
ClassSymbol outer = readClassSymbol(nextChar());
|
|
Name name = readName(nextChar());
|
|
if (name == null) name = names.empty;
|
|
long flags = adjustClassFlags(nextChar());
|
|
if (outer != null) { // we have a member class
|
|
if (name == names.empty)
|
|
name = names.one;
|
|
ClassSymbol member = enterClass(name, outer);
|
|
if ((flags & STATIC) == 0) {
|
|
((ClassType)member.type).setEnclosingType(outer.type);
|
|
if (member.erasure_field != null)
|
|
((ClassType)member.erasure_field).setEnclosingType(types.erasure(outer.type));
|
|
}
|
|
if (c == outer) {
|
|
member.flags_field = flags;
|
|
enterMember(c, member);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Read a class file.
|
|
*/
|
|
private void readClassFile(ClassSymbol c) throws IOException {
|
|
int magic = nextInt();
|
|
if (magic != JAVA_MAGIC)
|
|
throw badClassFile("illegal.start.of.class.file");
|
|
|
|
minorVersion = nextChar();
|
|
majorVersion = nextChar();
|
|
int maxMajor = Target.MAX().majorVersion;
|
|
int maxMinor = Target.MAX().minorVersion;
|
|
if (majorVersion > maxMajor ||
|
|
majorVersion * 1000 + minorVersion <
|
|
Target.MIN().majorVersion * 1000 + Target.MIN().minorVersion)
|
|
{
|
|
if (majorVersion == (maxMajor + 1))
|
|
log.warning("big.major.version",
|
|
currentClassFile,
|
|
majorVersion,
|
|
maxMajor);
|
|
else
|
|
throw badClassFile("wrong.version",
|
|
Integer.toString(majorVersion),
|
|
Integer.toString(minorVersion),
|
|
Integer.toString(maxMajor),
|
|
Integer.toString(maxMinor));
|
|
}
|
|
else if (checkClassFile &&
|
|
majorVersion == maxMajor &&
|
|
minorVersion > maxMinor)
|
|
{
|
|
printCCF("found.later.version",
|
|
Integer.toString(minorVersion));
|
|
}
|
|
indexPool();
|
|
if (signatureBuffer.length < bp) {
|
|
int ns = Integer.highestOneBit(bp) << 1;
|
|
signatureBuffer = new byte[ns];
|
|
}
|
|
readClass(c);
|
|
}
|
|
|
|
/************************************************************************
|
|
* Adjusting flags
|
|
***********************************************************************/
|
|
|
|
long adjustFieldFlags(long flags) {
|
|
return flags;
|
|
}
|
|
long adjustMethodFlags(long flags) {
|
|
if ((flags & ACC_BRIDGE) != 0) {
|
|
flags &= ~ACC_BRIDGE;
|
|
flags |= BRIDGE;
|
|
if (!allowGenerics)
|
|
flags &= ~SYNTHETIC;
|
|
}
|
|
if ((flags & ACC_VARARGS) != 0) {
|
|
flags &= ~ACC_VARARGS;
|
|
flags |= VARARGS;
|
|
}
|
|
return flags;
|
|
}
|
|
long adjustClassFlags(long flags) {
|
|
return flags & ~ACC_SUPER; // SUPER and SYNCHRONIZED bits overloaded
|
|
}
|
|
|
|
/************************************************************************
|
|
* Loading Classes
|
|
***********************************************************************/
|
|
|
|
/** Define a new class given its name and owner.
|
|
*/
|
|
public ClassSymbol defineClass(Name name, Symbol owner) {
|
|
ClassSymbol c = new ClassSymbol(0, name, owner);
|
|
if (owner.kind == PCK)
|
|
Assert.checkNull(classes.get(c.flatname), c);
|
|
c.completer = thisCompleter;
|
|
return c;
|
|
}
|
|
|
|
/** Create a new toplevel or member class symbol with given name
|
|
* and owner and enter in `classes' unless already there.
|
|
*/
|
|
public ClassSymbol enterClass(Name name, TypeSymbol owner) {
|
|
Name flatname = TypeSymbol.formFlatName(name, owner);
|
|
ClassSymbol c = classes.get(flatname);
|
|
if (c == null) {
|
|
c = defineClass(name, owner);
|
|
classes.put(flatname, c);
|
|
} else if ((c.name != name || c.owner != owner) && owner.kind == TYP && c.owner.kind == PCK) {
|
|
// reassign fields of classes that might have been loaded with
|
|
// their flat names.
|
|
c.owner.members().remove(c);
|
|
c.name = name;
|
|
c.owner = owner;
|
|
c.fullname = ClassSymbol.formFullName(name, owner);
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* Creates a new toplevel class symbol with given flat name and
|
|
* given class (or source) file.
|
|
*
|
|
* @param flatName a fully qualified binary class name
|
|
* @param classFile the class file or compilation unit defining
|
|
* the class (may be {@code null})
|
|
* @return a newly created class symbol
|
|
* @throws AssertionError if the class symbol already exists
|
|
*/
|
|
public ClassSymbol enterClass(Name flatName, JavaFileObject classFile) {
|
|
ClassSymbol cs = classes.get(flatName);
|
|
if (cs != null) {
|
|
String msg = Log.format("%s: completer = %s; class file = %s; source file = %s",
|
|
cs.fullname,
|
|
cs.completer,
|
|
cs.classfile,
|
|
cs.sourcefile);
|
|
throw new AssertionError(msg);
|
|
}
|
|
Name packageName = Convert.packagePart(flatName);
|
|
PackageSymbol owner = packageName.isEmpty()
|
|
? syms.unnamedPackage
|
|
: enterPackage(packageName);
|
|
cs = defineClass(Convert.shortName(flatName), owner);
|
|
cs.classfile = classFile;
|
|
classes.put(flatName, cs);
|
|
return cs;
|
|
}
|
|
|
|
/** Create a new member or toplevel class symbol with given flat name
|
|
* and enter in `classes' unless already there.
|
|
*/
|
|
public ClassSymbol enterClass(Name flatname) {
|
|
ClassSymbol c = classes.get(flatname);
|
|
if (c == null)
|
|
return enterClass(flatname, (JavaFileObject)null);
|
|
else
|
|
return c;
|
|
}
|
|
|
|
/** Completion for classes to be loaded. Before a class is loaded
|
|
* we make sure its enclosing class (if any) is loaded.
|
|
*/
|
|
private void complete(Symbol sym) throws CompletionFailure {
|
|
if (sym.kind == TYP) {
|
|
ClassSymbol c = (ClassSymbol)sym;
|
|
c.members_field = new Scope.ErrorScope(c); // make sure it's always defined
|
|
annotate.enterStart();
|
|
try {
|
|
completeOwners(c.owner);
|
|
completeEnclosing(c);
|
|
} finally {
|
|
// The flush needs to happen only after annotations
|
|
// are filled in.
|
|
annotate.enterDoneWithoutFlush();
|
|
}
|
|
fillIn(c);
|
|
} else if (sym.kind == PCK) {
|
|
PackageSymbol p = (PackageSymbol)sym;
|
|
try {
|
|
fillIn(p);
|
|
} catch (IOException ex) {
|
|
throw new CompletionFailure(sym, ex.getLocalizedMessage()).initCause(ex);
|
|
}
|
|
}
|
|
if (!filling)
|
|
annotate.flush(); // finish attaching annotations
|
|
}
|
|
|
|
/** complete up through the enclosing package. */
|
|
private void completeOwners(Symbol o) {
|
|
if (o.kind != PCK) completeOwners(o.owner);
|
|
o.complete();
|
|
}
|
|
|
|
/**
|
|
* Tries to complete lexically enclosing classes if c looks like a
|
|
* nested class. This is similar to completeOwners but handles
|
|
* the situation when a nested class is accessed directly as it is
|
|
* possible with the Tree API or javax.lang.model.*.
|
|
*/
|
|
private void completeEnclosing(ClassSymbol c) {
|
|
if (c.owner.kind == PCK) {
|
|
Symbol owner = c.owner;
|
|
for (Name name : Convert.enclosingCandidates(Convert.shortName(c.name))) {
|
|
Symbol encl = owner.members().lookup(name).sym;
|
|
if (encl == null)
|
|
encl = classes.get(TypeSymbol.formFlatName(name, owner));
|
|
if (encl != null)
|
|
encl.complete();
|
|
}
|
|
}
|
|
}
|
|
|
|
/** We can only read a single class file at a time; this
|
|
* flag keeps track of when we are currently reading a class
|
|
* file.
|
|
*/
|
|
private boolean filling = false;
|
|
|
|
/** Fill in definition of class `c' from corresponding class or
|
|
* source file.
|
|
*/
|
|
private void fillIn(ClassSymbol c) {
|
|
if (completionFailureName == c.fullname) {
|
|
throw new CompletionFailure(c, "user-selected completion failure by class name");
|
|
}
|
|
currentOwner = c;
|
|
warnedAttrs.clear();
|
|
JavaFileObject classfile = c.classfile;
|
|
if (classfile != null) {
|
|
JavaFileObject previousClassFile = currentClassFile;
|
|
try {
|
|
if (filling) {
|
|
Assert.error("Filling " + classfile.toUri() + " during " + previousClassFile);
|
|
}
|
|
currentClassFile = classfile;
|
|
if (verbose) {
|
|
log.printVerbose("loading", currentClassFile.toString());
|
|
}
|
|
if (classfile.getKind() == JavaFileObject.Kind.CLASS) {
|
|
filling = true;
|
|
try {
|
|
bp = 0;
|
|
buf = readInputStream(buf, classfile.openInputStream());
|
|
readClassFile(c);
|
|
if (!missingTypeVariables.isEmpty() && !foundTypeVariables.isEmpty()) {
|
|
List<Type> missing = missingTypeVariables;
|
|
List<Type> found = foundTypeVariables;
|
|
missingTypeVariables = List.nil();
|
|
foundTypeVariables = List.nil();
|
|
filling = false;
|
|
ClassType ct = (ClassType)currentOwner.type;
|
|
ct.supertype_field =
|
|
types.subst(ct.supertype_field, missing, found);
|
|
ct.interfaces_field =
|
|
types.subst(ct.interfaces_field, missing, found);
|
|
} else if (missingTypeVariables.isEmpty() !=
|
|
foundTypeVariables.isEmpty()) {
|
|
Name name = missingTypeVariables.head.tsym.name;
|
|
throw badClassFile("undecl.type.var", name);
|
|
}
|
|
} finally {
|
|
missingTypeVariables = List.nil();
|
|
foundTypeVariables = List.nil();
|
|
filling = false;
|
|
}
|
|
} else {
|
|
if (sourceCompleter != null) {
|
|
sourceCompleter.complete(c);
|
|
} else {
|
|
throw new IllegalStateException("Source completer required to read "
|
|
+ classfile.toUri());
|
|
}
|
|
}
|
|
return;
|
|
} catch (IOException ex) {
|
|
throw badClassFile("unable.to.access.file", ex.getMessage());
|
|
} finally {
|
|
currentClassFile = previousClassFile;
|
|
}
|
|
} else {
|
|
JCDiagnostic diag =
|
|
diagFactory.fragment("class.file.not.found", c.flatname);
|
|
throw
|
|
newCompletionFailure(c, diag);
|
|
}
|
|
}
|
|
// where
|
|
private static byte[] readInputStream(byte[] buf, InputStream s) throws IOException {
|
|
try {
|
|
buf = ensureCapacity(buf, s.available());
|
|
int r = s.read(buf);
|
|
int bp = 0;
|
|
while (r != -1) {
|
|
bp += r;
|
|
buf = ensureCapacity(buf, bp);
|
|
r = s.read(buf, bp, buf.length - bp);
|
|
}
|
|
return buf;
|
|
} finally {
|
|
try {
|
|
s.close();
|
|
} catch (IOException e) {
|
|
/* Ignore any errors, as this stream may have already
|
|
* thrown a related exception which is the one that
|
|
* should be reported.
|
|
*/
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* ensureCapacity will increase the buffer as needed, taking note that
|
|
* the new buffer will always be greater than the needed and never
|
|
* exactly equal to the needed size or bp. If equal then the read (above)
|
|
* will infinitely loop as buf.length - bp == 0.
|
|
*/
|
|
private static byte[] ensureCapacity(byte[] buf, int needed) {
|
|
if (buf.length <= needed) {
|
|
byte[] old = buf;
|
|
buf = new byte[Integer.highestOneBit(needed) << 1];
|
|
System.arraycopy(old, 0, buf, 0, old.length);
|
|
}
|
|
return buf;
|
|
}
|
|
/** Static factory for CompletionFailure objects.
|
|
* In practice, only one can be used at a time, so we share one
|
|
* to reduce the expense of allocating new exception objects.
|
|
*/
|
|
private CompletionFailure newCompletionFailure(TypeSymbol c,
|
|
JCDiagnostic diag) {
|
|
if (!cacheCompletionFailure) {
|
|
// log.warning("proc.messager",
|
|
// Log.getLocalizedString("class.file.not.found", c.flatname));
|
|
// c.debug.printStackTrace();
|
|
return new CompletionFailure(c, diag);
|
|
} else {
|
|
CompletionFailure result = cachedCompletionFailure;
|
|
result.sym = c;
|
|
result.diag = diag;
|
|
return result;
|
|
}
|
|
}
|
|
private CompletionFailure cachedCompletionFailure =
|
|
new CompletionFailure(null, (JCDiagnostic) null);
|
|
{
|
|
cachedCompletionFailure.setStackTrace(new StackTraceElement[0]);
|
|
}
|
|
|
|
/** Load a toplevel class with given fully qualified name
|
|
* The class is entered into `classes' only if load was successful.
|
|
*/
|
|
public ClassSymbol loadClass(Name flatname) throws CompletionFailure {
|
|
boolean absent = classes.get(flatname) == null;
|
|
ClassSymbol c = enterClass(flatname);
|
|
if (c.members_field == null && c.completer != null) {
|
|
try {
|
|
c.complete();
|
|
} catch (CompletionFailure ex) {
|
|
if (absent) classes.remove(flatname);
|
|
throw ex;
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/************************************************************************
|
|
* Loading Packages
|
|
***********************************************************************/
|
|
|
|
/** Check to see if a package exists, given its fully qualified name.
|
|
*/
|
|
public boolean packageExists(Name fullname) {
|
|
return enterPackage(fullname).exists();
|
|
}
|
|
|
|
/** Make a package, given its fully qualified name.
|
|
*/
|
|
public PackageSymbol enterPackage(Name fullname) {
|
|
PackageSymbol p = packages.get(fullname);
|
|
if (p == null) {
|
|
Assert.check(!fullname.isEmpty(), "rootPackage missing!");
|
|
p = new PackageSymbol(
|
|
Convert.shortName(fullname),
|
|
enterPackage(Convert.packagePart(fullname)));
|
|
p.completer = thisCompleter;
|
|
packages.put(fullname, p);
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/** Make a package, given its unqualified name and enclosing package.
|
|
*/
|
|
public PackageSymbol enterPackage(Name name, PackageSymbol owner) {
|
|
return enterPackage(TypeSymbol.formFullName(name, owner));
|
|
}
|
|
|
|
/** Include class corresponding to given class file in package,
|
|
* unless (1) we already have one the same kind (.class or .java), or
|
|
* (2) we have one of the other kind, and the given class file
|
|
* is older.
|
|
*/
|
|
protected void includeClassFile(PackageSymbol p, JavaFileObject file) {
|
|
if ((p.flags_field & EXISTS) == 0)
|
|
for (Symbol q = p; q != null && q.kind == PCK; q = q.owner)
|
|
q.flags_field |= EXISTS;
|
|
JavaFileObject.Kind kind = file.getKind();
|
|
int seen;
|
|
if (kind == JavaFileObject.Kind.CLASS)
|
|
seen = CLASS_SEEN;
|
|
else
|
|
seen = SOURCE_SEEN;
|
|
String binaryName = fileManager.inferBinaryName(currentLoc, file);
|
|
int lastDot = binaryName.lastIndexOf(".");
|
|
Name classname = names.fromString(binaryName.substring(lastDot + 1));
|
|
boolean isPkgInfo = classname == names.package_info;
|
|
ClassSymbol c = isPkgInfo
|
|
? p.package_info
|
|
: (ClassSymbol) p.members_field.lookup(classname).sym;
|
|
if (c == null) {
|
|
c = enterClass(classname, p);
|
|
if (c.classfile == null) // only update the file if's it's newly created
|
|
c.classfile = file;
|
|
if (isPkgInfo) {
|
|
p.package_info = c;
|
|
} else {
|
|
if (c.owner == p) // it might be an inner class
|
|
p.members_field.enter(c);
|
|
}
|
|
} else if (c.classfile != null && (c.flags_field & seen) == 0) {
|
|
// if c.classfile == null, we are currently compiling this class
|
|
// and no further action is necessary.
|
|
// if (c.flags_field & seen) != 0, we have already encountered
|
|
// a file of the same kind; again no further action is necessary.
|
|
if ((c.flags_field & (CLASS_SEEN | SOURCE_SEEN)) != 0)
|
|
c.classfile = preferredFileObject(file, c.classfile);
|
|
}
|
|
c.flags_field |= seen;
|
|
}
|
|
|
|
/** Implement policy to choose to derive information from a source
|
|
* file or a class file when both are present. May be overridden
|
|
* by subclasses.
|
|
*/
|
|
protected JavaFileObject preferredFileObject(JavaFileObject a,
|
|
JavaFileObject b) {
|
|
|
|
if (preferSource)
|
|
return (a.getKind() == JavaFileObject.Kind.SOURCE) ? a : b;
|
|
else {
|
|
long adate = a.getLastModified();
|
|
long bdate = b.getLastModified();
|
|
// 6449326: policy for bad lastModifiedTime in ClassReader
|
|
//assert adate >= 0 && bdate >= 0;
|
|
return (adate > bdate) ? a : b;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* specifies types of files to be read when filling in a package symbol
|
|
*/
|
|
protected EnumSet<JavaFileObject.Kind> getPackageFileKinds() {
|
|
return EnumSet.of(JavaFileObject.Kind.CLASS, JavaFileObject.Kind.SOURCE);
|
|
}
|
|
|
|
/**
|
|
* this is used to support javadoc
|
|
*/
|
|
protected void extraFileActions(PackageSymbol pack, JavaFileObject fe) {
|
|
}
|
|
|
|
protected Location currentLoc; // FIXME
|
|
|
|
private boolean verbosePath = true;
|
|
|
|
/** Load directory of package into members scope.
|
|
*/
|
|
private void fillIn(PackageSymbol p) throws IOException {
|
|
if (p.members_field == null) p.members_field = new Scope(p);
|
|
String packageName = p.fullname.toString();
|
|
|
|
Set<JavaFileObject.Kind> kinds = getPackageFileKinds();
|
|
|
|
fillIn(p, PLATFORM_CLASS_PATH,
|
|
fileManager.list(PLATFORM_CLASS_PATH,
|
|
packageName,
|
|
EnumSet.of(JavaFileObject.Kind.CLASS),
|
|
false));
|
|
|
|
Set<JavaFileObject.Kind> classKinds = EnumSet.copyOf(kinds);
|
|
classKinds.remove(JavaFileObject.Kind.SOURCE);
|
|
boolean wantClassFiles = !classKinds.isEmpty();
|
|
|
|
Set<JavaFileObject.Kind> sourceKinds = EnumSet.copyOf(kinds);
|
|
sourceKinds.remove(JavaFileObject.Kind.CLASS);
|
|
boolean wantSourceFiles = !sourceKinds.isEmpty();
|
|
|
|
boolean haveSourcePath = fileManager.hasLocation(SOURCE_PATH);
|
|
|
|
if (verbose && verbosePath) {
|
|
if (fileManager instanceof StandardJavaFileManager) {
|
|
StandardJavaFileManager fm = (StandardJavaFileManager)fileManager;
|
|
if (haveSourcePath && wantSourceFiles) {
|
|
List<File> path = List.nil();
|
|
for (File file : fm.getLocation(SOURCE_PATH)) {
|
|
path = path.prepend(file);
|
|
}
|
|
log.printVerbose("sourcepath", path.reverse().toString());
|
|
} else if (wantSourceFiles) {
|
|
List<File> path = List.nil();
|
|
for (File file : fm.getLocation(CLASS_PATH)) {
|
|
path = path.prepend(file);
|
|
}
|
|
log.printVerbose("sourcepath", path.reverse().toString());
|
|
}
|
|
if (wantClassFiles) {
|
|
List<File> path = List.nil();
|
|
for (File file : fm.getLocation(PLATFORM_CLASS_PATH)) {
|
|
path = path.prepend(file);
|
|
}
|
|
for (File file : fm.getLocation(CLASS_PATH)) {
|
|
path = path.prepend(file);
|
|
}
|
|
log.printVerbose("classpath", path.reverse().toString());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (wantSourceFiles && !haveSourcePath) {
|
|
fillIn(p, CLASS_PATH,
|
|
fileManager.list(CLASS_PATH,
|
|
packageName,
|
|
kinds,
|
|
false));
|
|
} else {
|
|
if (wantClassFiles)
|
|
fillIn(p, CLASS_PATH,
|
|
fileManager.list(CLASS_PATH,
|
|
packageName,
|
|
classKinds,
|
|
false));
|
|
if (wantSourceFiles)
|
|
fillIn(p, SOURCE_PATH,
|
|
fileManager.list(SOURCE_PATH,
|
|
packageName,
|
|
sourceKinds,
|
|
false));
|
|
}
|
|
verbosePath = false;
|
|
}
|
|
// where
|
|
private void fillIn(PackageSymbol p,
|
|
Location location,
|
|
Iterable<JavaFileObject> files)
|
|
{
|
|
currentLoc = location;
|
|
for (JavaFileObject fo : files) {
|
|
switch (fo.getKind()) {
|
|
case CLASS:
|
|
case SOURCE: {
|
|
// TODO pass binaryName to includeClassFile
|
|
String binaryName = fileManager.inferBinaryName(currentLoc, fo);
|
|
String simpleName = binaryName.substring(binaryName.lastIndexOf(".") + 1);
|
|
if (SourceVersion.isIdentifier(simpleName) ||
|
|
simpleName.equals("package-info"))
|
|
includeClassFile(p, fo);
|
|
break;
|
|
}
|
|
default:
|
|
extraFileActions(p, fo);
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Output for "-checkclassfile" option.
|
|
* @param key The key to look up the correct internationalized string.
|
|
* @param arg An argument for substitution into the output string.
|
|
*/
|
|
private void printCCF(String key, Object arg) {
|
|
log.printLines(key, arg);
|
|
}
|
|
|
|
|
|
public interface SourceCompleter {
|
|
void complete(ClassSymbol sym)
|
|
throws CompletionFailure;
|
|
}
|
|
|
|
/**
|
|
* A subclass of JavaFileObject for the sourcefile attribute found in a classfile.
|
|
* The attribute is only the last component of the original filename, so is unlikely
|
|
* to be valid as is, so operations other than those to access the name throw
|
|
* UnsupportedOperationException
|
|
*/
|
|
private static class SourceFileObject extends BaseFileObject {
|
|
|
|
/** The file's name.
|
|
*/
|
|
private Name name;
|
|
private Name flatname;
|
|
|
|
public SourceFileObject(Name name, Name flatname) {
|
|
super(null); // no file manager; never referenced for this file object
|
|
this.name = name;
|
|
this.flatname = flatname;
|
|
}
|
|
|
|
@Override
|
|
public URI toUri() {
|
|
try {
|
|
return new URI(null, name.toString(), null);
|
|
} catch (URISyntaxException e) {
|
|
throw new CannotCreateUriError(name.toString(), e);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public String getName() {
|
|
return name.toString();
|
|
}
|
|
|
|
@Override
|
|
public String getShortName() {
|
|
return getName();
|
|
}
|
|
|
|
@Override
|
|
public JavaFileObject.Kind getKind() {
|
|
return getKind(getName());
|
|
}
|
|
|
|
@Override
|
|
public InputStream openInputStream() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
public OutputStream openOutputStream() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
public CharBuffer getCharContent(boolean ignoreEncodingErrors) {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
public Reader openReader(boolean ignoreEncodingErrors) {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
public Writer openWriter() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
public long getLastModified() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
public boolean delete() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
@Override
|
|
protected String inferBinaryName(Iterable<? extends File> path) {
|
|
return flatname.toString();
|
|
}
|
|
|
|
@Override
|
|
public boolean isNameCompatible(String simpleName, JavaFileObject.Kind kind) {
|
|
return true; // fail-safe mode
|
|
}
|
|
|
|
/**
|
|
* Check if two file objects are equal.
|
|
* SourceFileObjects are just placeholder objects for the value of a
|
|
* SourceFile attribute, and do not directly represent specific files.
|
|
* Two SourceFileObjects are equal if their names are equal.
|
|
*/
|
|
@Override
|
|
public boolean equals(Object other) {
|
|
if (this == other)
|
|
return true;
|
|
|
|
if (!(other instanceof SourceFileObject))
|
|
return false;
|
|
|
|
SourceFileObject o = (SourceFileObject) other;
|
|
return name.equals(o.name);
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return name.hashCode();
|
|
}
|
|
}
|
|
}
|