duke@1: /*
jjg@1521:  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
ohair@554:  * published by the Free Software Foundation.  Oracle designates this
duke@1:  * particular file as subject to the "Classpath" exception as provided
ohair@554:  * by Oracle in the LICENSE file that accompanied this code.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: package com.sun.tools.javac.jvm;
duke@1: 
duke@1: import java.io.*;
mcimadamore@1336: import java.util.LinkedHashMap;
mcimadamore@1336: import java.util.Map;
duke@1: import java.util.Set;
duke@1: import java.util.HashSet;
duke@1: 
jjg@1521: import javax.lang.model.type.TypeKind;
duke@1: import javax.tools.JavaFileManager;
duke@1: import javax.tools.FileObject;
duke@1: import javax.tools.JavaFileObject;
duke@1: 
duke@1: import com.sun.tools.javac.code.*;
jjg@657: import com.sun.tools.javac.code.Attribute.RetentionPolicy;
jjg@1521: import com.sun.tools.javac.code.Attribute.TypeCompound;
rfield@1587: import static com.sun.tools.javac.code.BoundKind.EXTENDS;
rfield@1587: import static com.sun.tools.javac.code.BoundKind.SUPER;
rfield@1587: import static com.sun.tools.javac.code.BoundKind.UNBOUND;
duke@1: import com.sun.tools.javac.code.Symbol.*;
duke@1: import com.sun.tools.javac.code.Type.*;
vromero@1452: import com.sun.tools.javac.code.Types.UniqueType;
jjg@415: import com.sun.tools.javac.file.BaseFileObject;
vromero@1452: import com.sun.tools.javac.jvm.Pool.DynamicMethod;
vromero@1452: import com.sun.tools.javac.jvm.Pool.Method;
vromero@1452: import com.sun.tools.javac.jvm.Pool.MethodHandle;
vromero@1452: import com.sun.tools.javac.jvm.Pool.Variable;
duke@1: import com.sun.tools.javac.util.*;
duke@1: 
duke@1: import static com.sun.tools.javac.code.Flags.*;
duke@1: import static com.sun.tools.javac.code.Kinds.*;
jjg@1374: import static com.sun.tools.javac.code.TypeTag.*;
duke@1: import static com.sun.tools.javac.jvm.UninitializedType.*;
jjg@1157: import static com.sun.tools.javac.main.Option.*;
duke@1: import static javax.tools.StandardLocation.CLASS_OUTPUT;
duke@1: 
jjg@700: 
duke@1: /** This class provides operations to map an internal symbol table graph
duke@1:  *  rooted in a ClassSymbol into a classfile.
duke@1:  *
jjg@581:  *  <p><b>This is NOT part of any supported API.
jjg@581:  *  If you write code that depends on this, you do so at your own risk.
duke@1:  *  This code and its internal interfaces are subject to change or
duke@1:  *  deletion without notice.</b>
duke@1:  */
duke@1: public class ClassWriter extends ClassFile {
duke@1:     protected static final Context.Key<ClassWriter> classWriterKey =
duke@1:         new Context.Key<ClassWriter>();
duke@1: 
duke@1:     private final Options options;
duke@1: 
duke@1:     /** Switch: verbose output.
duke@1:      */
duke@1:     private boolean verbose;
duke@1: 
jjg@1521:     /** Switch: scramble private field names.
duke@1:      */
duke@1:     private boolean scramble;
duke@1: 
jjg@1521:     /** Switch: scramble all field names.
duke@1:      */
duke@1:     private boolean scrambleAll;
duke@1: 
duke@1:     /** Switch: retrofit mode.
duke@1:      */
duke@1:     private boolean retrofit;
duke@1: 
duke@1:     /** Switch: emit source file attribute.
duke@1:      */
duke@1:     private boolean emitSourceFile;
duke@1: 
duke@1:     /** Switch: generate CharacterRangeTable attribute.
duke@1:      */
duke@1:     private boolean genCrt;
duke@1: 
jjg@1521:     /** Switch: describe the generated stackmap.
duke@1:      */
duke@1:     boolean debugstackmap;
duke@1: 
duke@1:     /**
duke@1:      * Target class version.
duke@1:      */
duke@1:     private Target target;
duke@1: 
duke@1:     /**
duke@1:      * Source language version.
duke@1:      */
duke@1:     private Source source;
duke@1: 
duke@1:     /** Type utilities. */
duke@1:     private Types types;
duke@1: 
duke@1:     /** The initial sizes of the data and constant pool buffers.
jjg@1521:      *  Sizes are increased when buffers get full.
duke@1:      */
duke@1:     static final int DATA_BUF_SIZE = 0x0fff0;
duke@1:     static final int POOL_BUF_SIZE = 0x1fff0;
duke@1: 
duke@1:     /** An output buffer for member info.
duke@1:      */
duke@1:     ByteBuffer databuf = new ByteBuffer(DATA_BUF_SIZE);
duke@1: 
duke@1:     /** An output buffer for the constant pool.
duke@1:      */
duke@1:     ByteBuffer poolbuf = new ByteBuffer(POOL_BUF_SIZE);
duke@1: 
duke@1:     /** The constant pool.
duke@1:      */
duke@1:     Pool pool;
duke@1: 
duke@1:     /** The inner classes to be written, as a set.
duke@1:      */
duke@1:     Set<ClassSymbol> innerClasses;
duke@1: 
duke@1:     /** The inner classes to be written, as a queue where
duke@1:      *  enclosing classes come first.
duke@1:      */
duke@1:     ListBuffer<ClassSymbol> innerClassesQueue;
duke@1: 
mcimadamore@1336:     /** The bootstrap methods to be written in the corresponding class attribute
mcimadamore@1336:      *  (one for each invokedynamic)
mcimadamore@1336:      */
vromero@1452:     Map<DynamicMethod, MethodHandle> bootstrapMethods;
mcimadamore@1336: 
duke@1:     /** The log to use for verbose output.
duke@1:      */
duke@1:     private final Log log;
duke@1: 
duke@1:     /** The name table. */
jjg@113:     private final Names names;
duke@1: 
duke@1:     /** Access to files. */
duke@1:     private final JavaFileManager fileManager;
duke@1: 
rfield@1587:     /** Sole signature generator */
rfield@1587:     private final CWSignatureGenerator signatureGen;
rfield@1587: 
duke@1:     /** The tags and constants used in compressed stackmap. */
duke@1:     static final int SAME_FRAME_SIZE = 64;
duke@1:     static final int SAME_LOCALS_1_STACK_ITEM_EXTENDED = 247;
duke@1:     static final int SAME_FRAME_EXTENDED = 251;
duke@1:     static final int FULL_FRAME = 255;
duke@1:     static final int MAX_LOCAL_LENGTH_DIFF = 4;
duke@1: 
duke@1:     /** Get the ClassWriter instance for this context. */
duke@1:     public static ClassWriter instance(Context context) {
duke@1:         ClassWriter instance = context.get(classWriterKey);
duke@1:         if (instance == null)
duke@1:             instance = new ClassWriter(context);
duke@1:         return instance;
duke@1:     }
duke@1: 
duke@1:     /** Construct a class writer, given an options table.
duke@1:      */
ksrini@1309:     protected ClassWriter(Context context) {
duke@1:         context.put(classWriterKey, this);
duke@1: 
duke@1:         log = Log.instance(context);
jjg@113:         names = Names.instance(context);
duke@1:         options = Options.instance(context);
duke@1:         target = Target.instance(context);
duke@1:         source = Source.instance(context);
duke@1:         types = Types.instance(context);
duke@1:         fileManager = context.get(JavaFileManager.class);
rfield@1587:         signatureGen = new CWSignatureGenerator(types);
duke@1: 
jjg@700:         verbose        = options.isSet(VERBOSE);
jjg@700:         scramble       = options.isSet("-scramble");
jjg@700:         scrambleAll    = options.isSet("-scrambleAll");
jjg@700:         retrofit       = options.isSet("-retrofit");
jjg@700:         genCrt         = options.isSet(XJCOV);
jjg@700:         debugstackmap  = options.isSet("debugstackmap");
duke@1: 
jjg@700:         emitSourceFile = options.isUnset(G_CUSTOM) ||
jjg@700:                             options.isSet(G_CUSTOM, "source");
duke@1: 
duke@1:         String dumpModFlags = options.get("dumpmodifiers");
duke@1:         dumpClassModifiers =
duke@1:             (dumpModFlags != null && dumpModFlags.indexOf('c') != -1);
duke@1:         dumpFieldModifiers =
duke@1:             (dumpModFlags != null && dumpModFlags.indexOf('f') != -1);
duke@1:         dumpInnerClassModifiers =
duke@1:             (dumpModFlags != null && dumpModFlags.indexOf('i') != -1);
duke@1:         dumpMethodModifiers =
duke@1:             (dumpModFlags != null && dumpModFlags.indexOf('m') != -1);
duke@1:     }
duke@1: 
duke@1: /******************************************************************
duke@1:  * Diagnostics: dump generated class names and modifiers
duke@1:  ******************************************************************/
duke@1: 
duke@1:     /** Value of option 'dumpmodifiers' is a string
duke@1:      *  indicating which modifiers should be dumped for debugging:
duke@1:      *    'c' -- classes
duke@1:      *    'f' -- fields
duke@1:      *    'i' -- innerclass attributes
duke@1:      *    'm' -- methods
duke@1:      *  For example, to dump everything:
duke@1:      *    javac -XDdumpmodifiers=cifm MyProg.java
duke@1:      */
duke@1:     private final boolean dumpClassModifiers; // -XDdumpmodifiers=c
duke@1:     private final boolean dumpFieldModifiers; // -XDdumpmodifiers=f
duke@1:     private final boolean dumpInnerClassModifiers; // -XDdumpmodifiers=i
duke@1:     private final boolean dumpMethodModifiers; // -XDdumpmodifiers=m
duke@1: 
duke@1: 
duke@1:     /** Return flags as a string, separated by " ".
duke@1:      */
duke@1:     public static String flagNames(long flags) {
jjg@816:         StringBuilder sbuf = new StringBuilder();
duke@1:         int i = 0;
duke@1:         long f = flags & StandardFlags;
duke@1:         while (f != 0) {
jjg@816:             if ((f & 1) != 0) {
jjg@816:                 sbuf.append(" ");
jjg@816:                 sbuf.append(flagName[i]);
jjg@816:             }
duke@1:             f = f >> 1;
duke@1:             i++;
duke@1:         }
duke@1:         return sbuf.toString();
duke@1:     }
duke@1:     //where
duke@1:         private final static String[] flagName = {
duke@1:             "PUBLIC", "PRIVATE", "PROTECTED", "STATIC", "FINAL",
duke@1:             "SUPER", "VOLATILE", "TRANSIENT", "NATIVE", "INTERFACE",
duke@1:             "ABSTRACT", "STRICTFP"};
duke@1: 
duke@1: /******************************************************************
duke@1:  * Output routines
duke@1:  ******************************************************************/
duke@1: 
duke@1:     /** Write a character into given byte buffer;
duke@1:      *  byte buffer will not be grown.
duke@1:      */
duke@1:     void putChar(ByteBuffer buf, int op, int x) {
duke@1:         buf.elems[op  ] = (byte)((x >>  8) & 0xFF);
duke@1:         buf.elems[op+1] = (byte)((x      ) & 0xFF);
duke@1:     }
duke@1: 
duke@1:     /** Write an integer into given byte buffer;
duke@1:      *  byte buffer will not be grown.
duke@1:      */
duke@1:     void putInt(ByteBuffer buf, int adr, int x) {
duke@1:         buf.elems[adr  ] = (byte)((x >> 24) & 0xFF);
duke@1:         buf.elems[adr+1] = (byte)((x >> 16) & 0xFF);
duke@1:         buf.elems[adr+2] = (byte)((x >>  8) & 0xFF);
duke@1:         buf.elems[adr+3] = (byte)((x      ) & 0xFF);
duke@1:     }
duke@1: 
rfield@1587:     /**
rfield@1587:      * Signature Generation
rfield@1587:      */
rfield@1587:     private class CWSignatureGenerator extends Types.SignatureGenerator {
duke@1: 
rfield@1587:         /**
rfield@1587:          * An output buffer for type signatures.
rfield@1587:          */
rfield@1587:         ByteBuffer sigbuf = new ByteBuffer();
rfield@1587: 
rfield@1587:         CWSignatureGenerator(Types types) {
rfield@1587:             super(types);
rfield@1587:         }
rfield@1587: 
rfield@1587:         /**
rfield@1587:          * Assemble signature of given type in string buffer.
rfield@1587:          * Check for uninitialized types before calling the general case.
rfield@1587:          */
rfield@1587:         @Override
rfield@1587:         public void assembleSig(Type type) {
rfield@1587:             type = type.unannotatedType();
rfield@1587:             switch (type.getTag()) {
rfield@1587:                 case UNINITIALIZED_THIS:
rfield@1587:                 case UNINITIALIZED_OBJECT:
rfield@1587:                     // we don't yet have a spec for uninitialized types in the
rfield@1587:                     // local variable table
rfield@1587:                     assembleSig(types.erasure(((UninitializedType)type).qtype));
rfield@1587:                     break;
rfield@1587:                 default:
rfield@1587:                     super.assembleSig(type);
duke@1:             }
duke@1:         }
rfield@1587: 
rfield@1587:         @Override
rfield@1587:         protected void append(char ch) {
rfield@1587:             sigbuf.appendByte(ch);
rfield@1587:         }
rfield@1587: 
rfield@1587:         @Override
rfield@1587:         protected void append(byte[] ba) {
rfield@1587:             sigbuf.appendBytes(ba);
rfield@1587:         }
rfield@1587: 
rfield@1587:         @Override
rfield@1587:         protected void append(Name name) {
rfield@1587:             sigbuf.appendName(name);
rfield@1587:         }
rfield@1587: 
rfield@1587:         @Override
rfield@1587:         protected void classReference(ClassSymbol c) {
rfield@1587:             enterInner(c);
rfield@1587:         }
rfield@1587: 
rfield@1587:         private void reset() {
rfield@1587:             sigbuf.reset();
rfield@1587:         }
rfield@1587: 
rfield@1587:         private Name toName() {
rfield@1587:             return sigbuf.toName(names);
rfield@1587:         }
rfield@1587: 
rfield@1587:         private boolean isEmpty() {
rfield@1587:             return sigbuf.length == 0;
duke@1:         }
duke@1:     }
duke@1: 
rfield@1587:     /**
rfield@1587:      * Return signature of given type
duke@1:      */
duke@1:     Name typeSig(Type type) {
rfield@1587:         Assert.check(signatureGen.isEmpty());
duke@1:         //- System.out.println(" ? " + type);
rfield@1587:         signatureGen.assembleSig(type);
rfield@1587:         Name n = signatureGen.toName();
rfield@1587:         signatureGen.reset();
duke@1:         //- System.out.println("   " + n);
duke@1:         return n;
duke@1:     }
duke@1: 
duke@1:     /** Given a type t, return the extended class name of its erasure in
duke@1:      *  external representation.
duke@1:      */
duke@1:     public Name xClassName(Type t) {
jjg@1374:         if (t.hasTag(CLASS)) {
duke@1:             return names.fromUtf(externalize(t.tsym.flatName()));
jjg@1374:         } else if (t.hasTag(ARRAY)) {
duke@1:             return typeSig(types.erasure(t));
duke@1:         } else {
duke@1:             throw new AssertionError("xClassName");
duke@1:         }
duke@1:     }
duke@1: 
duke@1: /******************************************************************
duke@1:  * Writing the Constant Pool
duke@1:  ******************************************************************/
duke@1: 
duke@1:     /** Thrown when the constant pool is over full.
duke@1:      */
duke@1:     public static class PoolOverflow extends Exception {
duke@1:         private static final long serialVersionUID = 0;
duke@1:         public PoolOverflow() {}
duke@1:     }
duke@1:     public static class StringOverflow extends Exception {
duke@1:         private static final long serialVersionUID = 0;
duke@1:         public final String value;
duke@1:         public StringOverflow(String s) {
duke@1:             value = s;
duke@1:         }
duke@1:     }
duke@1: 
duke@1:     /** Write constant pool to pool buffer.
duke@1:      *  Note: during writing, constant pool
duke@1:      *  might grow since some parts of constants still need to be entered.
duke@1:      */
duke@1:     void writePool(Pool pool) throws PoolOverflow, StringOverflow {
duke@1:         int poolCountIdx = poolbuf.length;
duke@1:         poolbuf.appendChar(0);
duke@1:         int i = 1;
duke@1:         while (i < pool.pp) {
duke@1:             Object value = pool.pool[i];
jjg@816:             Assert.checkNonNull(value);
vromero@1541:             if (value instanceof Method || value instanceof Variable)
vromero@1541:                 value = ((DelegatedSymbol)value).getUnderlyingSymbol();
duke@1: 
duke@1:             if (value instanceof MethodSymbol) {
duke@1:                 MethodSymbol m = (MethodSymbol)value;
mcimadamore@1336:                 if (!m.isDynamic()) {
mcimadamore@1336:                     poolbuf.appendByte((m.owner.flags() & INTERFACE) != 0
mcimadamore@1336:                               ? CONSTANT_InterfaceMethodref
mcimadamore@1336:                               : CONSTANT_Methodref);
mcimadamore@1336:                     poolbuf.appendChar(pool.put(m.owner));
mcimadamore@1336:                     poolbuf.appendChar(pool.put(nameType(m)));
mcimadamore@1336:                 } else {
mcimadamore@1336:                     //invokedynamic
mcimadamore@1336:                     DynamicMethodSymbol dynSym = (DynamicMethodSymbol)m;
vromero@1452:                     MethodHandle handle = new MethodHandle(dynSym.bsmKind, dynSym.bsm, types);
vromero@1452:                     DynamicMethod dynMeth = new DynamicMethod(dynSym, types);
vromero@1452:                     bootstrapMethods.put(dynMeth, handle);
mcimadamore@1336:                     //init cp entries
mcimadamore@1336:                     pool.put(names.BootstrapMethods);
mcimadamore@1336:                     pool.put(handle);
mcimadamore@1336:                     for (Object staticArg : dynSym.staticArgs) {
mcimadamore@1336:                         pool.put(staticArg);
mcimadamore@1336:                     }
mcimadamore@1336:                     poolbuf.appendByte(CONSTANT_InvokeDynamic);
mcimadamore@1336:                     poolbuf.appendChar(bootstrapMethods.size() - 1);
mcimadamore@1336:                     poolbuf.appendChar(pool.put(nameType(dynSym)));
mcimadamore@1336:                 }
duke@1:             } else if (value instanceof VarSymbol) {
duke@1:                 VarSymbol v = (VarSymbol)value;
duke@1:                 poolbuf.appendByte(CONSTANT_Fieldref);
duke@1:                 poolbuf.appendChar(pool.put(v.owner));
duke@1:                 poolbuf.appendChar(pool.put(nameType(v)));
duke@1:             } else if (value instanceof Name) {
duke@1:                 poolbuf.appendByte(CONSTANT_Utf8);
duke@1:                 byte[] bs = ((Name)value).toUtf();
duke@1:                 poolbuf.appendChar(bs.length);
duke@1:                 poolbuf.appendBytes(bs, 0, bs.length);
duke@1:                 if (bs.length > Pool.MAX_STRING_LENGTH)
duke@1:                     throw new StringOverflow(value.toString());
duke@1:             } else if (value instanceof ClassSymbol) {
duke@1:                 ClassSymbol c = (ClassSymbol)value;
duke@1:                 if (c.owner.kind == TYP) pool.put(c.owner);
duke@1:                 poolbuf.appendByte(CONSTANT_Class);
jjg@1374:                 if (c.type.hasTag(ARRAY)) {
duke@1:                     poolbuf.appendChar(pool.put(typeSig(c.type)));
duke@1:                 } else {
duke@1:                     poolbuf.appendChar(pool.put(names.fromUtf(externalize(c.flatname))));
duke@1:                     enterInner(c);
duke@1:                 }
duke@1:             } else if (value instanceof NameAndType) {
duke@1:                 NameAndType nt = (NameAndType)value;
duke@1:                 poolbuf.appendByte(CONSTANT_NameandType);
duke@1:                 poolbuf.appendChar(pool.put(nt.name));
vromero@1452:                 poolbuf.appendChar(pool.put(typeSig(nt.uniqueType.type)));
duke@1:             } else if (value instanceof Integer) {
duke@1:                 poolbuf.appendByte(CONSTANT_Integer);
duke@1:                 poolbuf.appendInt(((Integer)value).intValue());
duke@1:             } else if (value instanceof Long) {
duke@1:                 poolbuf.appendByte(CONSTANT_Long);
duke@1:                 poolbuf.appendLong(((Long)value).longValue());
duke@1:                 i++;
duke@1:             } else if (value instanceof Float) {
duke@1:                 poolbuf.appendByte(CONSTANT_Float);
duke@1:                 poolbuf.appendFloat(((Float)value).floatValue());
duke@1:             } else if (value instanceof Double) {
duke@1:                 poolbuf.appendByte(CONSTANT_Double);
duke@1:                 poolbuf.appendDouble(((Double)value).doubleValue());
duke@1:                 i++;
duke@1:             } else if (value instanceof String) {
duke@1:                 poolbuf.appendByte(CONSTANT_String);
duke@1:                 poolbuf.appendChar(pool.put(names.fromString((String)value)));
vromero@1452:             } else if (value instanceof UniqueType) {
vromero@1452:                 Type type = ((UniqueType)value).type;
vromero@1452:                 if (type instanceof MethodType) {
vromero@1452:                     poolbuf.appendByte(CONSTANT_MethodType);
vromero@1452:                     poolbuf.appendChar(pool.put(typeSig((MethodType)type)));
vromero@1452:                 } else {
vromero@1452:                     if (type.hasTag(CLASS)) enterInner((ClassSymbol)type.tsym);
vromero@1452:                     poolbuf.appendByte(CONSTANT_Class);
vromero@1452:                     poolbuf.appendChar(pool.put(xClassName(type)));
vromero@1452:                 }
vromero@1452:             } else if (value instanceof MethodHandle) {
vromero@1452:                 MethodHandle ref = (MethodHandle)value;
mcimadamore@1336:                 poolbuf.appendByte(CONSTANT_MethodHandle);
mcimadamore@1336:                 poolbuf.appendByte(ref.refKind);
mcimadamore@1336:                 poolbuf.appendChar(pool.put(ref.refSym));
duke@1:             } else {
jjg@816:                 Assert.error("writePool " + value);
duke@1:             }
duke@1:             i++;
duke@1:         }
duke@1:         if (pool.pp > Pool.MAX_ENTRIES)
duke@1:             throw new PoolOverflow();
duke@1:         putChar(poolbuf, poolCountIdx, pool.pp);
duke@1:     }
duke@1: 
duke@1:     /** Given a field, return its name.
duke@1:      */
duke@1:     Name fieldName(Symbol sym) {
duke@1:         if (scramble && (sym.flags() & PRIVATE) != 0 ||
duke@1:             scrambleAll && (sym.flags() & (PROTECTED | PUBLIC)) == 0)
jjg@113:             return names.fromString("_$" + sym.name.getIndex());
duke@1:         else
duke@1:             return sym.name;
duke@1:     }
duke@1: 
duke@1:     /** Given a symbol, return its name-and-type.
duke@1:      */
duke@1:     NameAndType nameType(Symbol sym) {
duke@1:         return new NameAndType(fieldName(sym),
duke@1:                                retrofit
duke@1:                                ? sym.erasure(types)
vromero@1452:                                : sym.externalType(types), types);
duke@1:         // if we retrofit, then the NameAndType has been read in as is
duke@1:         // and no change is necessary. If we compile normally, the
duke@1:         // NameAndType is generated from a symbol reference, and the
duke@1:         // adjustment of adding an additional this$n parameter needs to be made.
duke@1:     }
duke@1: 
duke@1: /******************************************************************
duke@1:  * Writing Attributes
duke@1:  ******************************************************************/
duke@1: 
duke@1:     /** Write header for an attribute to data buffer and return
duke@1:      *  position past attribute length index.
duke@1:      */
duke@1:     int writeAttr(Name attrName) {
duke@1:         databuf.appendChar(pool.put(attrName));
duke@1:         databuf.appendInt(0);
duke@1:         return databuf.length;
duke@1:     }
duke@1: 
duke@1:     /** Fill in attribute length.
duke@1:      */
duke@1:     void endAttr(int index) {
duke@1:         putInt(databuf, index - 4, databuf.length - index);
duke@1:     }
duke@1: 
duke@1:     /** Leave space for attribute count and return index for
duke@1:      *  number of attributes field.
duke@1:      */
duke@1:     int beginAttrs() {
duke@1:         databuf.appendChar(0);
duke@1:         return databuf.length;
duke@1:     }
duke@1: 
duke@1:     /** Fill in number of attributes.
duke@1:      */
duke@1:     void endAttrs(int index, int count) {
duke@1:         putChar(databuf, index - 2, count);
duke@1:     }
duke@1: 
duke@1:     /** Write the EnclosingMethod attribute if needed.
duke@1:      *  Returns the number of attributes written (0 or 1).
duke@1:      */
duke@1:     int writeEnclosingMethodAttribute(ClassSymbol c) {
ksrini@1309:         if (!target.hasEnclosingMethodAttribute())
ksrini@1309:             return 0;
ksrini@1309:         return writeEnclosingMethodAttribute(names.EnclosingMethod, c);
ksrini@1309:     }
ksrini@1309: 
ksrini@1309:     /** Write the EnclosingMethod attribute with a specified name.
ksrini@1309:      *  Returns the number of attributes written (0 or 1).
ksrini@1309:      */
ksrini@1309:     protected int writeEnclosingMethodAttribute(Name attributeName, ClassSymbol c) {
ksrini@1309:         if (c.owner.kind != MTH && // neither a local class
duke@1:             c.name != names.empty) // nor anonymous
duke@1:             return 0;
duke@1: 
ksrini@1309:         int alenIdx = writeAttr(attributeName);
duke@1:         ClassSymbol enclClass = c.owner.enclClass();
duke@1:         MethodSymbol enclMethod =
duke@1:             (c.owner.type == null // local to init block
duke@1:              || c.owner.kind != MTH) // or member init
duke@1:             ? null
duke@1:             : (MethodSymbol)c.owner;
duke@1:         databuf.appendChar(pool.put(enclClass));
duke@1:         databuf.appendChar(enclMethod == null ? 0 : pool.put(nameType(c.owner)));
duke@1:         endAttr(alenIdx);
duke@1:         return 1;
duke@1:     }
duke@1: 
duke@1:     /** Write flag attributes; return number of attributes written.
duke@1:      */
duke@1:     int writeFlagAttrs(long flags) {
duke@1:         int acount = 0;
duke@1:         if ((flags & DEPRECATED) != 0) {
duke@1:             int alenIdx = writeAttr(names.Deprecated);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         if ((flags & ENUM) != 0 && !target.useEnumFlag()) {
duke@1:             int alenIdx = writeAttr(names.Enum);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         if ((flags & SYNTHETIC) != 0 && !target.useSyntheticFlag()) {
duke@1:             int alenIdx = writeAttr(names.Synthetic);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         if ((flags & BRIDGE) != 0 && !target.useBridgeFlag()) {
duke@1:             int alenIdx = writeAttr(names.Bridge);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         if ((flags & VARARGS) != 0 && !target.useVarargsFlag()) {
duke@1:             int alenIdx = writeAttr(names.Varargs);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         if ((flags & ANNOTATION) != 0 && !target.useAnnotationFlag()) {
duke@1:             int alenIdx = writeAttr(names.Annotation);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         return acount;
duke@1:     }
duke@1: 
duke@1:     /** Write member (field or method) attributes;
duke@1:      *  return number of attributes written.
duke@1:      */
duke@1:     int writeMemberAttrs(Symbol sym) {
duke@1:         int acount = writeFlagAttrs(sym.flags());
duke@1:         long flags = sym.flags();
duke@1:         if (source.allowGenerics() &&
duke@1:             (flags & (SYNTHETIC|BRIDGE)) != SYNTHETIC &&
duke@1:             (flags & ANONCONSTR) == 0 &&
duke@1:             (!types.isSameType(sym.type, sym.erasure(types)) ||
rfield@1587:             signatureGen.hasTypeVar(sym.type.getThrownTypes()))) {
duke@1:             // note that a local class with captured variables
duke@1:             // will get a signature attribute
duke@1:             int alenIdx = writeAttr(names.Signature);
duke@1:             databuf.appendChar(pool.put(typeSig(sym.type)));
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
jfranck@1464:         acount += writeJavaAnnotations(sym.getRawAttributes());
jjg@1521:         acount += writeTypeAnnotations(sym.getRawTypeAttributes());
duke@1:         return acount;
duke@1:     }
duke@1: 
jjg@1473:     /**
jjg@1473:      * Write method parameter names attribute.
jjg@1473:      */
jjg@1473:     int writeMethodParametersAttr(MethodSymbol m) {
mcimadamore@1565:         MethodType ty = m.externalType(types).asMethodType();
mcimadamore@1565:         final int allparams = ty.argtypes.size();
mcimadamore@1565:         if (m.params != null && allparams != 0) {
mcimadamore@1565:             final int attrIndex = writeAttr(names.MethodParameters);
mcimadamore@1565:             databuf.appendByte(allparams);
mcimadamore@1565:             // Write extra parameters first
mcimadamore@1565:             for (VarSymbol s : m.extraParams) {
mcimadamore@1565:                 final int flags =
mcimadamore@1565:                     ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
mcimadamore@1565:                     ((int) m.flags() & SYNTHETIC);
mcimadamore@1565:                 databuf.appendChar(pool.put(s.name));
mcimadamore@1565:                 databuf.appendInt(flags);
mcimadamore@1565:             }
mcimadamore@1565:             // Now write the real parameters
jjg@1473:             for (VarSymbol s : m.params) {
mcimadamore@1565:                 final int flags =
mcimadamore@1565:                     ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
mcimadamore@1565:                     ((int) m.flags() & SYNTHETIC);
jjg@1473:                 databuf.appendChar(pool.put(s.name));
ksrini@1592:                 databuf.appendChar(flags);
jjg@1473:             }
jjg@1473:             endAttr(attrIndex);
jjg@1473:             return 1;
jjg@1473:         } else
jjg@1473:             return 0;
jjg@1473:     }
jjg@1473: 
jjg@1473: 
duke@1:     /** Write method parameter annotations;
duke@1:      *  return number of attributes written.
duke@1:      */
duke@1:     int writeParameterAttrs(MethodSymbol m) {
duke@1:         boolean hasVisible = false;
duke@1:         boolean hasInvisible = false;
duke@1:         if (m.params != null) for (VarSymbol s : m.params) {
jfranck@1464:             for (Attribute.Compound a : s.getRawAttributes()) {
jjg@657:                 switch (types.getRetention(a)) {
duke@1:                 case SOURCE: break;
duke@1:                 case CLASS: hasInvisible = true; break;
duke@1:                 case RUNTIME: hasVisible = true; break;
duke@1:                 default: ;// /* fail soft */ throw new AssertionError(vis);
duke@1:                 }
duke@1:             }
duke@1:         }
duke@1: 
duke@1:         int attrCount = 0;
duke@1:         if (hasVisible) {
duke@1:             int attrIndex = writeAttr(names.RuntimeVisibleParameterAnnotations);
duke@1:             databuf.appendByte(m.params.length());
duke@1:             for (VarSymbol s : m.params) {
duke@1:                 ListBuffer<Attribute.Compound> buf = new ListBuffer<Attribute.Compound>();
jfranck@1464:                 for (Attribute.Compound a : s.getRawAttributes())
jjg@657:                     if (types.getRetention(a) == RetentionPolicy.RUNTIME)
duke@1:                         buf.append(a);
duke@1:                 databuf.appendChar(buf.length());
duke@1:                 for (Attribute.Compound a : buf)
duke@1:                     writeCompoundAttribute(a);
duke@1:             }
duke@1:             endAttr(attrIndex);
duke@1:             attrCount++;
duke@1:         }
duke@1:         if (hasInvisible) {
duke@1:             int attrIndex = writeAttr(names.RuntimeInvisibleParameterAnnotations);
duke@1:             databuf.appendByte(m.params.length());
duke@1:             for (VarSymbol s : m.params) {
duke@1:                 ListBuffer<Attribute.Compound> buf = new ListBuffer<Attribute.Compound>();
jfranck@1464:                 for (Attribute.Compound a : s.getRawAttributes())
jjg@657:                     if (types.getRetention(a) == RetentionPolicy.CLASS)
duke@1:                         buf.append(a);
duke@1:                 databuf.appendChar(buf.length());
duke@1:                 for (Attribute.Compound a : buf)
duke@1:                     writeCompoundAttribute(a);
duke@1:             }
duke@1:             endAttr(attrIndex);
duke@1:             attrCount++;
duke@1:         }
duke@1:         return attrCount;
duke@1:     }
duke@1: 
duke@1: /**********************************************************************
duke@1:  * Writing Java-language annotations (aka metadata, attributes)
duke@1:  **********************************************************************/
duke@1: 
duke@1:     /** Write Java-language annotations; return number of JVM
duke@1:      *  attributes written (zero or one).
duke@1:      */
duke@1:     int writeJavaAnnotations(List<Attribute.Compound> attrs) {
duke@1:         if (attrs.isEmpty()) return 0;
duke@1:         ListBuffer<Attribute.Compound> visibles = new ListBuffer<Attribute.Compound>();
duke@1:         ListBuffer<Attribute.Compound> invisibles = new ListBuffer<Attribute.Compound>();
duke@1:         for (Attribute.Compound a : attrs) {
jjg@657:             switch (types.getRetention(a)) {
duke@1:             case SOURCE: break;
duke@1:             case CLASS: invisibles.append(a); break;
duke@1:             case RUNTIME: visibles.append(a); break;
duke@1:             default: ;// /* fail soft */ throw new AssertionError(vis);
duke@1:             }
duke@1:         }
duke@1: 
duke@1:         int attrCount = 0;
duke@1:         if (visibles.length() != 0) {
duke@1:             int attrIndex = writeAttr(names.RuntimeVisibleAnnotations);
duke@1:             databuf.appendChar(visibles.length());
duke@1:             for (Attribute.Compound a : visibles)
duke@1:                 writeCompoundAttribute(a);
duke@1:             endAttr(attrIndex);
duke@1:             attrCount++;
duke@1:         }
duke@1:         if (invisibles.length() != 0) {
duke@1:             int attrIndex = writeAttr(names.RuntimeInvisibleAnnotations);
duke@1:             databuf.appendChar(invisibles.length());
duke@1:             for (Attribute.Compound a : invisibles)
duke@1:                 writeCompoundAttribute(a);
duke@1:             endAttr(attrIndex);
duke@1:             attrCount++;
duke@1:         }
duke@1:         return attrCount;
duke@1:     }
duke@1: 
jjg@1521:     int writeTypeAnnotations(List<Attribute.TypeCompound> typeAnnos) {
jjg@1521:         if (typeAnnos.isEmpty()) return 0;
jjg@1521: 
jjg@1521:         ListBuffer<Attribute.TypeCompound> visibles = ListBuffer.lb();
jjg@1521:         ListBuffer<Attribute.TypeCompound> invisibles = ListBuffer.lb();
jjg@1521: 
jjg@1521:         for (Attribute.TypeCompound tc : typeAnnos) {
jjg@1521:             if (tc.position == null || tc.position.type == TargetType.UNKNOWN) {
jjg@1521:                 boolean found = false;
jjg@1521:                 // TODO: the position for the container annotation of a
jjg@1521:                 // repeating type annotation has to be set.
jjg@1521:                 // This cannot be done when the container is created, because
jjg@1521:                 // then the position is not determined yet.
jjg@1521:                 // How can we link these pieces better together?
jjg@1521:                 if (tc.values.size() == 1) {
jjg@1521:                     Pair<MethodSymbol, Attribute> val = tc.values.get(0);
jjg@1521:                     if (val.fst.getSimpleName().contentEquals("value") &&
jjg@1521:                             val.snd instanceof Attribute.Array) {
jjg@1521:                         Attribute.Array arr = (Attribute.Array) val.snd;
jjg@1521:                         if (arr.values.length != 0 &&
jjg@1521:                                 arr.values[0] instanceof Attribute.TypeCompound) {
jjg@1521:                             TypeCompound atycomp = (Attribute.TypeCompound) arr.values[0];
jjg@1521:                             if (atycomp.position.type != TargetType.UNKNOWN) {
jjg@1521:                                 tc.position = atycomp.position;
jjg@1521:                                 found = true;
jjg@1521:                             }
jjg@1521:                         }
jjg@1521:                     }
jjg@1521:                 }
jjg@1521:                 if (!found) {
jjg@1521:                     // This happens for nested types like @A Outer. @B Inner.
jjg@1521:                     // For method parameters we get the annotation twice! Once with
jjg@1521:                     // a valid position, once unknown.
jjg@1521:                     // TODO: find a cleaner solution.
jjg@1521:                     // System.err.println("ClassWriter: Position UNKNOWN in type annotation: " + tc);
jjg@1521:                     continue;
jjg@1521:                 }
jjg@1521:             }
jjg@1521:             if (!tc.position.emitToClassfile())
jjg@1521:                 continue;
jjg@1521:             switch (types.getRetention(tc)) {
jjg@1521:             case SOURCE: break;
jjg@1521:             case CLASS: invisibles.append(tc); break;
jjg@1521:             case RUNTIME: visibles.append(tc); break;
jjg@1521:             default: ;// /* fail soft */ throw new AssertionError(vis);
jjg@1521:             }
jjg@1521:         }
jjg@1521: 
jjg@1521:         int attrCount = 0;
jjg@1521:         if (visibles.length() != 0) {
jjg@1521:             int attrIndex = writeAttr(names.RuntimeVisibleTypeAnnotations);
jjg@1521:             databuf.appendChar(visibles.length());
jjg@1521:             for (Attribute.TypeCompound p : visibles)
jjg@1521:                 writeTypeAnnotation(p);
jjg@1521:             endAttr(attrIndex);
jjg@1521:             attrCount++;
jjg@1521:         }
jjg@1521: 
jjg@1521:         if (invisibles.length() != 0) {
jjg@1521:             int attrIndex = writeAttr(names.RuntimeInvisibleTypeAnnotations);
jjg@1521:             databuf.appendChar(invisibles.length());
jjg@1521:             for (Attribute.TypeCompound p : invisibles)
jjg@1521:                 writeTypeAnnotation(p);
jjg@1521:             endAttr(attrIndex);
jjg@1521:             attrCount++;
jjg@1521:         }
jjg@1521: 
jjg@1521:         return attrCount;
jjg@1521:     }
jjg@1521: 
duke@1:     /** A visitor to write an attribute including its leading
duke@1:      *  single-character marker.
duke@1:      */
duke@1:     class AttributeWriter implements Attribute.Visitor {
duke@1:         public void visitConstant(Attribute.Constant _value) {
duke@1:             Object value = _value.value;
jjg@1374:             switch (_value.type.getTag()) {
duke@1:             case BYTE:
duke@1:                 databuf.appendByte('B');
duke@1:                 break;
duke@1:             case CHAR:
duke@1:                 databuf.appendByte('C');
duke@1:                 break;
duke@1:             case SHORT:
duke@1:                 databuf.appendByte('S');
duke@1:                 break;
duke@1:             case INT:
duke@1:                 databuf.appendByte('I');
duke@1:                 break;
duke@1:             case LONG:
duke@1:                 databuf.appendByte('J');
duke@1:                 break;
duke@1:             case FLOAT:
duke@1:                 databuf.appendByte('F');
duke@1:                 break;
duke@1:             case DOUBLE:
duke@1:                 databuf.appendByte('D');
duke@1:                 break;
duke@1:             case BOOLEAN:
duke@1:                 databuf.appendByte('Z');
duke@1:                 break;
duke@1:             case CLASS:
jjg@816:                 Assert.check(value instanceof String);
duke@1:                 databuf.appendByte('s');
duke@1:                 value = names.fromString(value.toString()); // CONSTANT_Utf8
duke@1:                 break;
duke@1:             default:
duke@1:                 throw new AssertionError(_value.type);
duke@1:             }
duke@1:             databuf.appendChar(pool.put(value));
duke@1:         }
duke@1:         public void visitEnum(Attribute.Enum e) {
duke@1:             databuf.appendByte('e');
duke@1:             databuf.appendChar(pool.put(typeSig(e.value.type)));
duke@1:             databuf.appendChar(pool.put(e.value.name));
duke@1:         }
duke@1:         public void visitClass(Attribute.Class clazz) {
duke@1:             databuf.appendByte('c');
jfranck@1313:             databuf.appendChar(pool.put(typeSig(clazz.classType)));
duke@1:         }
duke@1:         public void visitCompound(Attribute.Compound compound) {
duke@1:             databuf.appendByte('@');
duke@1:             writeCompoundAttribute(compound);
duke@1:         }
duke@1:         public void visitError(Attribute.Error x) {
duke@1:             throw new AssertionError(x);
duke@1:         }
duke@1:         public void visitArray(Attribute.Array array) {
duke@1:             databuf.appendByte('[');
duke@1:             databuf.appendChar(array.values.length);
duke@1:             for (Attribute a : array.values) {
duke@1:                 a.accept(this);
duke@1:             }
duke@1:         }
duke@1:     }
duke@1:     AttributeWriter awriter = new AttributeWriter();
duke@1: 
duke@1:     /** Write a compound attribute excluding the '@' marker. */
duke@1:     void writeCompoundAttribute(Attribute.Compound c) {
duke@1:         databuf.appendChar(pool.put(typeSig(c.type)));
duke@1:         databuf.appendChar(c.values.length());
duke@1:         for (Pair<Symbol.MethodSymbol,Attribute> p : c.values) {
duke@1:             databuf.appendChar(pool.put(p.fst.name));
duke@1:             p.snd.accept(awriter);
duke@1:         }
duke@1:     }
jjg@1521: 
jjg@1521:     void writeTypeAnnotation(Attribute.TypeCompound c) {
jjg@1521:         writePosition(c.position);
jjg@1521:         writeCompoundAttribute(c);
jjg@1521:     }
jjg@1521: 
jjg@1521:     void writePosition(TypeAnnotationPosition p) {
jjg@1521:         databuf.appendByte(p.type.targetTypeValue()); // TargetType tag is a byte
jjg@1521:         switch (p.type) {
jjg@1521:         // instanceof
jjg@1521:         case INSTANCEOF:
jjg@1521:         // new expression
jjg@1521:         case NEW:
jjg@1563:         // constructor/method reference receiver
jjg@1563:         case CONSTRUCTOR_REFERENCE:
jjg@1563:         case METHOD_REFERENCE:
jjg@1521:             databuf.appendChar(p.offset);
jjg@1521:             break;
jjg@1521:         // local variable
jjg@1521:         case LOCAL_VARIABLE:
jjg@1521:         // resource variable
jjg@1521:         case RESOURCE_VARIABLE:
jjg@1521:             databuf.appendChar(p.lvarOffset.length);  // for table length
jjg@1521:             for (int i = 0; i < p.lvarOffset.length; ++i) {
jjg@1521:                 databuf.appendChar(p.lvarOffset[i]);
jjg@1521:                 databuf.appendChar(p.lvarLength[i]);
jjg@1521:                 databuf.appendChar(p.lvarIndex[i]);
jjg@1521:             }
jjg@1521:             break;
jjg@1521:         // exception parameter
jjg@1521:         case EXCEPTION_PARAMETER:
jjg@1521:             databuf.appendByte(p.exception_index);
jjg@1521:             break;
jjg@1521:         // method receiver
jjg@1521:         case METHOD_RECEIVER:
jjg@1521:             // Do nothing
jjg@1521:             break;
jjg@1521:         // type parameter
jjg@1521:         case CLASS_TYPE_PARAMETER:
jjg@1521:         case METHOD_TYPE_PARAMETER:
jjg@1521:             databuf.appendByte(p.parameter_index);
jjg@1521:             break;
jjg@1521:         // type parameter bound
jjg@1521:         case CLASS_TYPE_PARAMETER_BOUND:
jjg@1521:         case METHOD_TYPE_PARAMETER_BOUND:
jjg@1521:             databuf.appendByte(p.parameter_index);
jjg@1521:             databuf.appendByte(p.bound_index);
jjg@1521:             break;
jjg@1521:         // class extends or implements clause
jjg@1521:         case CLASS_EXTENDS:
jjg@1521:             databuf.appendChar(p.type_index);
jjg@1521:             break;
jjg@1521:         // throws
jjg@1521:         case THROWS:
jjg@1521:             databuf.appendChar(p.type_index);
jjg@1521:             break;
jjg@1521:         // method parameter
jjg@1521:         case METHOD_FORMAL_PARAMETER:
jjg@1521:             databuf.appendByte(p.parameter_index);
jjg@1521:             break;
jjg@1563:         // type cast
jjg@1563:         case CAST:
jjg@1521:         // method/constructor/reference type argument
jjg@1521:         case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
jjg@1521:         case METHOD_INVOCATION_TYPE_ARGUMENT:
jjg@1563:         case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
jjg@1521:         case METHOD_REFERENCE_TYPE_ARGUMENT:
jjg@1521:             databuf.appendChar(p.offset);
jjg@1521:             databuf.appendByte(p.type_index);
jjg@1521:             break;
jjg@1521:         // We don't need to worry about these
jjg@1521:         case METHOD_RETURN:
jjg@1521:         case FIELD:
jjg@1521:             break;
jjg@1521:         case UNKNOWN:
jjg@1521:             throw new AssertionError("jvm.ClassWriter: UNKNOWN target type should never occur!");
jjg@1521:         default:
jjg@1521:             throw new AssertionError("jvm.ClassWriter: Unknown target type for position: " + p);
jjg@1521:         }
jjg@1521: 
jjg@1521:         { // Append location data for generics/arrays.
jjg@1521:             databuf.appendByte(p.location.size());
jjg@1521:             java.util.List<Integer> loc = TypeAnnotationPosition.getBinaryFromTypePath(p.location);
jjg@1521:             for (int i : loc)
jjg@1521:                 databuf.appendByte((byte)i);
jjg@1521:         }
jjg@1521:     }
jjg@1521: 
duke@1: /**********************************************************************
duke@1:  * Writing Objects
duke@1:  **********************************************************************/
duke@1: 
duke@1:     /** Enter an inner class into the `innerClasses' set/queue.
duke@1:      */
duke@1:     void enterInner(ClassSymbol c) {
mcimadamore@747:         if (c.type.isCompound()) {
mcimadamore@747:             throw new AssertionError("Unexpected intersection type: " + c.type);
mcimadamore@747:         }
duke@1:         try {
duke@1:             c.complete();
duke@1:         } catch (CompletionFailure ex) {
duke@1:             System.err.println("error: " + c + ": " + ex.getMessage());
duke@1:             throw ex;
duke@1:         }
jjg@1374:         if (!c.type.hasTag(CLASS)) return; // arrays
duke@1:         if (pool != null && // pool might be null if called from xClassName
mcimadamore@1086:             c.owner.enclClass() != null &&
duke@1:             (innerClasses == null || !innerClasses.contains(c))) {
duke@1: //          log.errWriter.println("enter inner " + c);//DEBUG
mcimadamore@1086:             enterInner(c.owner.enclClass());
duke@1:             pool.put(c);
duke@1:             pool.put(c.name);
duke@1:             if (innerClasses == null) {
duke@1:                 innerClasses = new HashSet<ClassSymbol>();
duke@1:                 innerClassesQueue = new ListBuffer<ClassSymbol>();
duke@1:                 pool.put(names.InnerClasses);
duke@1:             }
duke@1:             innerClasses.add(c);
duke@1:             innerClassesQueue.append(c);
duke@1:         }
duke@1:     }
duke@1: 
duke@1:     /** Write "inner classes" attribute.
duke@1:      */
duke@1:     void writeInnerClasses() {
duke@1:         int alenIdx = writeAttr(names.InnerClasses);
duke@1:         databuf.appendChar(innerClassesQueue.length());
duke@1:         for (List<ClassSymbol> l = innerClassesQueue.toList();
duke@1:              l.nonEmpty();
duke@1:              l = l.tail) {
duke@1:             ClassSymbol inner = l.head;
duke@1:             char flags = (char) adjustFlags(inner.flags_field);
duke@1:             if ((flags & INTERFACE) != 0) flags |= ABSTRACT; // Interfaces are always ABSTRACT
duke@1:             if (inner.name.isEmpty()) flags &= ~FINAL; // Anonymous class: unset FINAL flag
duke@1:             if (dumpInnerClassModifiers) {
jjg@1135:                 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135:                 pw.println("INNERCLASS  " + inner.name);
jjg@1135:                 pw.println("---" + flagNames(flags));
duke@1:             }
duke@1:             databuf.appendChar(pool.get(inner));
duke@1:             databuf.appendChar(
duke@1:                 inner.owner.kind == TYP ? pool.get(inner.owner) : 0);
duke@1:             databuf.appendChar(
jjg@113:                 !inner.name.isEmpty() ? pool.get(inner.name) : 0);
duke@1:             databuf.appendChar(flags);
duke@1:         }
duke@1:         endAttr(alenIdx);
duke@1:     }
duke@1: 
mcimadamore@1336:     /** Write "bootstrapMethods" attribute.
mcimadamore@1336:      */
mcimadamore@1336:     void writeBootstrapMethods() {
mcimadamore@1336:         int alenIdx = writeAttr(names.BootstrapMethods);
mcimadamore@1336:         databuf.appendChar(bootstrapMethods.size());
vromero@1452:         for (Map.Entry<DynamicMethod, MethodHandle> entry : bootstrapMethods.entrySet()) {
vromero@1452:             DynamicMethod dmeth = entry.getKey();
vromero@1452:             DynamicMethodSymbol dsym = (DynamicMethodSymbol)dmeth.baseSymbol();
mcimadamore@1336:             //write BSM handle
mcimadamore@1336:             databuf.appendChar(pool.get(entry.getValue()));
mcimadamore@1336:             //write static args length
mcimadamore@1336:             databuf.appendChar(dsym.staticArgs.length);
mcimadamore@1336:             //write static args array
vromero@1452:             Object[] uniqueArgs = dmeth.uniqueStaticArgs;
vromero@1452:             for (Object o : uniqueArgs) {
mcimadamore@1336:                 databuf.appendChar(pool.get(o));
mcimadamore@1336:             }
mcimadamore@1336:         }
mcimadamore@1336:         endAttr(alenIdx);
mcimadamore@1336:     }
mcimadamore@1336: 
duke@1:     /** Write field symbol, entering all references into constant pool.
duke@1:      */
duke@1:     void writeField(VarSymbol v) {
duke@1:         int flags = adjustFlags(v.flags());
duke@1:         databuf.appendChar(flags);
duke@1:         if (dumpFieldModifiers) {
jjg@1135:             PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135:             pw.println("FIELD  " + fieldName(v));
jjg@1135:             pw.println("---" + flagNames(v.flags()));
duke@1:         }
duke@1:         databuf.appendChar(pool.put(fieldName(v)));
duke@1:         databuf.appendChar(pool.put(typeSig(v.erasure(types))));
duke@1:         int acountIdx = beginAttrs();
duke@1:         int acount = 0;
duke@1:         if (v.getConstValue() != null) {
duke@1:             int alenIdx = writeAttr(names.ConstantValue);
duke@1:             databuf.appendChar(pool.put(v.getConstValue()));
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         acount += writeMemberAttrs(v);
duke@1:         endAttrs(acountIdx, acount);
duke@1:     }
duke@1: 
duke@1:     /** Write method symbol, entering all references into constant pool.
duke@1:      */
duke@1:     void writeMethod(MethodSymbol m) {
duke@1:         int flags = adjustFlags(m.flags());
duke@1:         databuf.appendChar(flags);
duke@1:         if (dumpMethodModifiers) {
jjg@1135:             PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135:             pw.println("METHOD  " + fieldName(m));
jjg@1135:             pw.println("---" + flagNames(m.flags()));
duke@1:         }
duke@1:         databuf.appendChar(pool.put(fieldName(m)));
duke@1:         databuf.appendChar(pool.put(typeSig(m.externalType(types))));
duke@1:         int acountIdx = beginAttrs();
duke@1:         int acount = 0;
duke@1:         if (m.code != null) {
duke@1:             int alenIdx = writeAttr(names.Code);
duke@1:             writeCode(m.code);
duke@1:             m.code = null; // to conserve space
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         List<Type> thrown = m.erasure(types).getThrownTypes();
duke@1:         if (thrown.nonEmpty()) {
duke@1:             int alenIdx = writeAttr(names.Exceptions);
duke@1:             databuf.appendChar(thrown.length());
duke@1:             for (List<Type> l = thrown; l.nonEmpty(); l = l.tail)
duke@1:                 databuf.appendChar(pool.put(l.head.tsym));
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         if (m.defaultValue != null) {
duke@1:             int alenIdx = writeAttr(names.AnnotationDefault);
duke@1:             m.defaultValue.accept(awriter);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
jjg@1473:         if (options.isSet(PARAMETERS))
jjg@1473:             acount += writeMethodParametersAttr(m);
duke@1:         acount += writeMemberAttrs(m);
duke@1:         acount += writeParameterAttrs(m);
duke@1:         endAttrs(acountIdx, acount);
duke@1:     }
duke@1: 
duke@1:     /** Write code attribute of method.
duke@1:      */
duke@1:     void writeCode(Code code) {
duke@1:         databuf.appendChar(code.max_stack);
duke@1:         databuf.appendChar(code.max_locals);
duke@1:         databuf.appendInt(code.cp);
duke@1:         databuf.appendBytes(code.code, 0, code.cp);
duke@1:         databuf.appendChar(code.catchInfo.length());
duke@1:         for (List<char[]> l = code.catchInfo.toList();
duke@1:              l.nonEmpty();
duke@1:              l = l.tail) {
duke@1:             for (int i = 0; i < l.head.length; i++)
duke@1:                 databuf.appendChar(l.head[i]);
duke@1:         }
duke@1:         int acountIdx = beginAttrs();
duke@1:         int acount = 0;
duke@1: 
duke@1:         if (code.lineInfo.nonEmpty()) {
duke@1:             int alenIdx = writeAttr(names.LineNumberTable);
duke@1:             databuf.appendChar(code.lineInfo.length());
duke@1:             for (List<char[]> l = code.lineInfo.reverse();
duke@1:                  l.nonEmpty();
duke@1:                  l = l.tail)
duke@1:                 for (int i = 0; i < l.head.length; i++)
duke@1:                     databuf.appendChar(l.head[i]);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         if (genCrt && (code.crt != null)) {
duke@1:             CRTable crt = code.crt;
duke@1:             int alenIdx = writeAttr(names.CharacterRangeTable);
duke@1:             int crtIdx = beginAttrs();
duke@1:             int crtEntries = crt.writeCRT(databuf, code.lineMap, log);
duke@1:             endAttrs(crtIdx, crtEntries);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         // counter for number of generic local variables
duke@1:         int nGenericVars = 0;
duke@1: 
duke@1:         if (code.varBufferSize > 0) {
duke@1:             int alenIdx = writeAttr(names.LocalVariableTable);
duke@1:             databuf.appendChar(code.varBufferSize);
duke@1: 
duke@1:             for (int i=0; i<code.varBufferSize; i++) {
duke@1:                 Code.LocalVar var = code.varBuffer[i];
duke@1: 
duke@1:                 // write variable info
jjg@816:                 Assert.check(var.start_pc >= 0
jjg@816:                         && var.start_pc <= code.cp);
duke@1:                 databuf.appendChar(var.start_pc);
jjg@816:                 Assert.check(var.length >= 0
jjg@816:                         && (var.start_pc + var.length) <= code.cp);
duke@1:                 databuf.appendChar(var.length);
duke@1:                 VarSymbol sym = var.sym;
duke@1:                 databuf.appendChar(pool.put(sym.name));
duke@1:                 Type vartype = sym.erasure(types);
mcimadamore@781:                 if (needsLocalVariableTypeEntry(sym.type))
duke@1:                     nGenericVars++;
duke@1:                 databuf.appendChar(pool.put(typeSig(vartype)));
duke@1:                 databuf.appendChar(var.reg);
duke@1:             }
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         if (nGenericVars > 0) {
duke@1:             int alenIdx = writeAttr(names.LocalVariableTypeTable);
duke@1:             databuf.appendChar(nGenericVars);
duke@1:             int count = 0;
duke@1: 
duke@1:             for (int i=0; i<code.varBufferSize; i++) {
duke@1:                 Code.LocalVar var = code.varBuffer[i];
duke@1:                 VarSymbol sym = var.sym;
mcimadamore@781:                 if (!needsLocalVariableTypeEntry(sym.type))
duke@1:                     continue;
duke@1:                 count++;
duke@1:                 // write variable info
duke@1:                 databuf.appendChar(var.start_pc);
duke@1:                 databuf.appendChar(var.length);
duke@1:                 databuf.appendChar(pool.put(sym.name));
duke@1:                 databuf.appendChar(pool.put(typeSig(sym.type)));
duke@1:                 databuf.appendChar(var.reg);
duke@1:             }
jjg@816:             Assert.check(count == nGenericVars);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         if (code.stackMapBufferSize > 0) {
duke@1:             if (debugstackmap) System.out.println("Stack map for " + code.meth);
duke@1:             int alenIdx = writeAttr(code.stackMap.getAttributeName(names));
duke@1:             writeStackMap(code);
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1:         endAttrs(acountIdx, acount);
duke@1:     }
mcimadamore@781:     //where
mcimadamore@781:     private boolean needsLocalVariableTypeEntry(Type t) {
mcimadamore@781:         //a local variable needs a type-entry if its type T is generic
mcimadamore@781:         //(i.e. |T| != T) and if it's not an intersection type (not supported
mcimadamore@781:         //in signature attribute grammar)
mcimadamore@781:         return (!types.isSameType(t, types.erasure(t)) &&
mcimadamore@781:                 !t.isCompound());
mcimadamore@781:     }
duke@1: 
duke@1:     void writeStackMap(Code code) {
duke@1:         int nframes = code.stackMapBufferSize;
duke@1:         if (debugstackmap) System.out.println(" nframes = " + nframes);
duke@1:         databuf.appendChar(nframes);
duke@1: 
duke@1:         switch (code.stackMap) {
duke@1:         case CLDC:
duke@1:             for (int i=0; i<nframes; i++) {
duke@1:                 if (debugstackmap) System.out.print("  " + i + ":");
duke@1:                 Code.StackMapFrame frame = code.stackMapBuffer[i];
duke@1: 
duke@1:                 // output PC
duke@1:                 if (debugstackmap) System.out.print(" pc=" + frame.pc);
duke@1:                 databuf.appendChar(frame.pc);
duke@1: 
duke@1:                 // output locals
duke@1:                 int localCount = 0;
duke@1:                 for (int j=0; j<frame.locals.length;
duke@1:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.locals[j]))) {
duke@1:                     localCount++;
duke@1:                 }
duke@1:                 if (debugstackmap) System.out.print(" nlocals=" +
duke@1:                                                     localCount);
duke@1:                 databuf.appendChar(localCount);
duke@1:                 for (int j=0; j<frame.locals.length;
duke@1:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.locals[j]))) {
duke@1:                     if (debugstackmap) System.out.print(" local[" + j + "]=");
duke@1:                     writeStackMapType(frame.locals[j]);
duke@1:                 }
duke@1: 
duke@1:                 // output stack
duke@1:                 int stackCount = 0;
duke@1:                 for (int j=0; j<frame.stack.length;
duke@1:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.stack[j]))) {
duke@1:                     stackCount++;
duke@1:                 }
duke@1:                 if (debugstackmap) System.out.print(" nstack=" +
duke@1:                                                     stackCount);
duke@1:                 databuf.appendChar(stackCount);
duke@1:                 for (int j=0; j<frame.stack.length;
duke@1:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.stack[j]))) {
duke@1:                     if (debugstackmap) System.out.print(" stack[" + j + "]=");
duke@1:                     writeStackMapType(frame.stack[j]);
duke@1:                 }
duke@1:                 if (debugstackmap) System.out.println();
duke@1:             }
duke@1:             break;
duke@1:         case JSR202: {
jjg@816:             Assert.checkNull(code.stackMapBuffer);
duke@1:             for (int i=0; i<nframes; i++) {
duke@1:                 if (debugstackmap) System.out.print("  " + i + ":");
duke@1:                 StackMapTableFrame frame = code.stackMapTableBuffer[i];
duke@1:                 frame.write(this);
duke@1:                 if (debugstackmap) System.out.println();
duke@1:             }
duke@1:             break;
duke@1:         }
duke@1:         default:
duke@1:             throw new AssertionError("Unexpected stackmap format value");
duke@1:         }
duke@1:     }
duke@1: 
duke@1:         //where
duke@1:         void writeStackMapType(Type t) {
duke@1:             if (t == null) {
duke@1:                 if (debugstackmap) System.out.print("empty");
duke@1:                 databuf.appendByte(0);
duke@1:             }
jjg@1374:             else switch(t.getTag()) {
duke@1:             case BYTE:
duke@1:             case CHAR:
duke@1:             case SHORT:
duke@1:             case INT:
duke@1:             case BOOLEAN:
duke@1:                 if (debugstackmap) System.out.print("int");
duke@1:                 databuf.appendByte(1);
duke@1:                 break;
duke@1:             case FLOAT:
duke@1:                 if (debugstackmap) System.out.print("float");
duke@1:                 databuf.appendByte(2);
duke@1:                 break;
duke@1:             case DOUBLE:
duke@1:                 if (debugstackmap) System.out.print("double");
duke@1:                 databuf.appendByte(3);
duke@1:                 break;
duke@1:             case LONG:
duke@1:                 if (debugstackmap) System.out.print("long");
duke@1:                 databuf.appendByte(4);
duke@1:                 break;
duke@1:             case BOT: // null
duke@1:                 if (debugstackmap) System.out.print("null");
duke@1:                 databuf.appendByte(5);
duke@1:                 break;
duke@1:             case CLASS:
duke@1:             case ARRAY:
duke@1:                 if (debugstackmap) System.out.print("object(" + t + ")");
duke@1:                 databuf.appendByte(7);
duke@1:                 databuf.appendChar(pool.put(t));
duke@1:                 break;
duke@1:             case TYPEVAR:
duke@1:                 if (debugstackmap) System.out.print("object(" + types.erasure(t).tsym + ")");
duke@1:                 databuf.appendByte(7);
duke@1:                 databuf.appendChar(pool.put(types.erasure(t).tsym));
duke@1:                 break;
duke@1:             case UNINITIALIZED_THIS:
duke@1:                 if (debugstackmap) System.out.print("uninit_this");
duke@1:                 databuf.appendByte(6);
duke@1:                 break;
duke@1:             case UNINITIALIZED_OBJECT:
duke@1:                 { UninitializedType uninitType = (UninitializedType)t;
duke@1:                 databuf.appendByte(8);
duke@1:                 if (debugstackmap) System.out.print("uninit_object@" + uninitType.offset);
duke@1:                 databuf.appendChar(uninitType.offset);
duke@1:                 }
duke@1:                 break;
duke@1:             default:
duke@1:                 throw new AssertionError();
duke@1:             }
duke@1:         }
duke@1: 
duke@1:     /** An entry in the JSR202 StackMapTable */
duke@1:     abstract static class StackMapTableFrame {
duke@1:         abstract int getFrameType();
duke@1: 
duke@1:         void write(ClassWriter writer) {
duke@1:             int frameType = getFrameType();
duke@1:             writer.databuf.appendByte(frameType);
duke@1:             if (writer.debugstackmap) System.out.print(" frame_type=" + frameType);
duke@1:         }
duke@1: 
duke@1:         static class SameFrame extends StackMapTableFrame {
duke@1:             final int offsetDelta;
duke@1:             SameFrame(int offsetDelta) {
duke@1:                 this.offsetDelta = offsetDelta;
duke@1:             }
duke@1:             int getFrameType() {
duke@1:                 return (offsetDelta < SAME_FRAME_SIZE) ? offsetDelta : SAME_FRAME_EXTENDED;
duke@1:             }
duke@1:             @Override
duke@1:             void write(ClassWriter writer) {
duke@1:                 super.write(writer);
duke@1:                 if (getFrameType() == SAME_FRAME_EXTENDED) {
duke@1:                     writer.databuf.appendChar(offsetDelta);
duke@1:                     if (writer.debugstackmap){
duke@1:                         System.out.print(" offset_delta=" + offsetDelta);
duke@1:                     }
duke@1:                 }
duke@1:             }
duke@1:         }
duke@1: 
duke@1:         static class SameLocals1StackItemFrame extends StackMapTableFrame {
duke@1:             final int offsetDelta;
duke@1:             final Type stack;
duke@1:             SameLocals1StackItemFrame(int offsetDelta, Type stack) {
duke@1:                 this.offsetDelta = offsetDelta;
duke@1:                 this.stack = stack;
duke@1:             }
duke@1:             int getFrameType() {
duke@1:                 return (offsetDelta < SAME_FRAME_SIZE) ?
duke@1:                        (SAME_FRAME_SIZE + offsetDelta) :
duke@1:                        SAME_LOCALS_1_STACK_ITEM_EXTENDED;
duke@1:             }
duke@1:             @Override
duke@1:             void write(ClassWriter writer) {
duke@1:                 super.write(writer);
duke@1:                 if (getFrameType() == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {
duke@1:                     writer.databuf.appendChar(offsetDelta);
duke@1:                     if (writer.debugstackmap) {
duke@1:                         System.out.print(" offset_delta=" + offsetDelta);
duke@1:                     }
duke@1:                 }
duke@1:                 if (writer.debugstackmap) {
duke@1:                     System.out.print(" stack[" + 0 + "]=");
duke@1:                 }
duke@1:                 writer.writeStackMapType(stack);
duke@1:             }
duke@1:         }
duke@1: 
duke@1:         static class ChopFrame extends StackMapTableFrame {
duke@1:             final int frameType;
duke@1:             final int offsetDelta;
duke@1:             ChopFrame(int frameType, int offsetDelta) {
duke@1:                 this.frameType = frameType;
duke@1:                 this.offsetDelta = offsetDelta;
duke@1:             }
duke@1:             int getFrameType() { return frameType; }
duke@1:             @Override
duke@1:             void write(ClassWriter writer) {
duke@1:                 super.write(writer);
duke@1:                 writer.databuf.appendChar(offsetDelta);
duke@1:                 if (writer.debugstackmap) {
duke@1:                     System.out.print(" offset_delta=" + offsetDelta);
duke@1:                 }
duke@1:             }
duke@1:         }
duke@1: 
duke@1:         static class AppendFrame extends StackMapTableFrame {
duke@1:             final int frameType;
duke@1:             final int offsetDelta;
duke@1:             final Type[] locals;
duke@1:             AppendFrame(int frameType, int offsetDelta, Type[] locals) {
duke@1:                 this.frameType = frameType;
duke@1:                 this.offsetDelta = offsetDelta;
duke@1:                 this.locals = locals;
duke@1:             }
duke@1:             int getFrameType() { return frameType; }
duke@1:             @Override
duke@1:             void write(ClassWriter writer) {
duke@1:                 super.write(writer);
duke@1:                 writer.databuf.appendChar(offsetDelta);
duke@1:                 if (writer.debugstackmap) {
duke@1:                     System.out.print(" offset_delta=" + offsetDelta);
duke@1:                 }
duke@1:                 for (int i=0; i<locals.length; i++) {
duke@1:                      if (writer.debugstackmap) System.out.print(" locals[" + i + "]=");
duke@1:                      writer.writeStackMapType(locals[i]);
duke@1:                 }
duke@1:             }
duke@1:         }
duke@1: 
duke@1:         static class FullFrame extends StackMapTableFrame {
duke@1:             final int offsetDelta;
duke@1:             final Type[] locals;
duke@1:             final Type[] stack;
duke@1:             FullFrame(int offsetDelta, Type[] locals, Type[] stack) {
duke@1:                 this.offsetDelta = offsetDelta;
duke@1:                 this.locals = locals;
duke@1:                 this.stack = stack;
duke@1:             }
duke@1:             int getFrameType() { return FULL_FRAME; }
duke@1:             @Override
duke@1:             void write(ClassWriter writer) {
duke@1:                 super.write(writer);
duke@1:                 writer.databuf.appendChar(offsetDelta);
duke@1:                 writer.databuf.appendChar(locals.length);
duke@1:                 if (writer.debugstackmap) {
duke@1:                     System.out.print(" offset_delta=" + offsetDelta);
duke@1:                     System.out.print(" nlocals=" + locals.length);
duke@1:                 }
duke@1:                 for (int i=0; i<locals.length; i++) {
duke@1:                     if (writer.debugstackmap) System.out.print(" locals[" + i + "]=");
duke@1:                     writer.writeStackMapType(locals[i]);
duke@1:                 }
duke@1: 
duke@1:                 writer.databuf.appendChar(stack.length);
duke@1:                 if (writer.debugstackmap) { System.out.print(" nstack=" + stack.length); }
duke@1:                 for (int i=0; i<stack.length; i++) {
duke@1:                     if (writer.debugstackmap) System.out.print(" stack[" + i + "]=");
duke@1:                     writer.writeStackMapType(stack[i]);
duke@1:                 }
duke@1:             }
duke@1:         }
duke@1: 
duke@1:        /** Compare this frame with the previous frame and produce
duke@1:         *  an entry of compressed stack map frame. */
duke@1:         static StackMapTableFrame getInstance(Code.StackMapFrame this_frame,
duke@1:                                               int prev_pc,
duke@1:                                               Type[] prev_locals,
duke@1:                                               Types types) {
duke@1:             Type[] locals = this_frame.locals;
duke@1:             Type[] stack = this_frame.stack;
duke@1:             int offset_delta = this_frame.pc - prev_pc - 1;
duke@1:             if (stack.length == 1) {
duke@1:                 if (locals.length == prev_locals.length
duke@1:                     && compare(prev_locals, locals, types) == 0) {
duke@1:                     return new SameLocals1StackItemFrame(offset_delta, stack[0]);
duke@1:                 }
duke@1:             } else if (stack.length == 0) {
duke@1:                 int diff_length = compare(prev_locals, locals, types);
duke@1:                 if (diff_length == 0) {
duke@1:                     return new SameFrame(offset_delta);
duke@1:                 } else if (-MAX_LOCAL_LENGTH_DIFF < diff_length && diff_length < 0) {
duke@1:                     // APPEND
duke@1:                     Type[] local_diff = new Type[-diff_length];
duke@1:                     for (int i=prev_locals.length, j=0; i<locals.length; i++,j++) {
duke@1:                         local_diff[j] = locals[i];
duke@1:                     }
duke@1:                     return new AppendFrame(SAME_FRAME_EXTENDED - diff_length,
duke@1:                                            offset_delta,
duke@1:                                            local_diff);
duke@1:                 } else if (0 < diff_length && diff_length < MAX_LOCAL_LENGTH_DIFF) {
duke@1:                     // CHOP
duke@1:                     return new ChopFrame(SAME_FRAME_EXTENDED - diff_length,
duke@1:                                          offset_delta);
duke@1:                 }
duke@1:             }
duke@1:             // FULL_FRAME
duke@1:             return new FullFrame(offset_delta, locals, stack);
duke@1:         }
duke@1: 
duke@1:         static boolean isInt(Type t) {
jjg@1374:             return (t.getTag().isStrictSubRangeOf(INT)  || t.hasTag(BOOLEAN));
duke@1:         }
duke@1: 
duke@1:         static boolean isSameType(Type t1, Type t2, Types types) {
duke@1:             if (t1 == null) { return t2 == null; }
duke@1:             if (t2 == null) { return false; }
duke@1: 
duke@1:             if (isInt(t1) && isInt(t2)) { return true; }
duke@1: 
jjg@1374:             if (t1.hasTag(UNINITIALIZED_THIS)) {
jjg@1374:                 return t2.hasTag(UNINITIALIZED_THIS);
jjg@1374:             } else if (t1.hasTag(UNINITIALIZED_OBJECT)) {
jjg@1374:                 if (t2.hasTag(UNINITIALIZED_OBJECT)) {
duke@1:                     return ((UninitializedType)t1).offset == ((UninitializedType)t2).offset;
duke@1:                 } else {
duke@1:                     return false;
duke@1:                 }
jjg@1374:             } else if (t2.hasTag(UNINITIALIZED_THIS) || t2.hasTag(UNINITIALIZED_OBJECT)) {
duke@1:                 return false;
duke@1:             }
duke@1: 
duke@1:             return types.isSameType(t1, t2);
duke@1:         }
duke@1: 
duke@1:         static int compare(Type[] arr1, Type[] arr2, Types types) {
duke@1:             int diff_length = arr1.length - arr2.length;
duke@1:             if (diff_length > MAX_LOCAL_LENGTH_DIFF || diff_length < -MAX_LOCAL_LENGTH_DIFF) {
duke@1:                 return Integer.MAX_VALUE;
duke@1:             }
duke@1:             int len = (diff_length > 0) ? arr2.length : arr1.length;
duke@1:             for (int i=0; i<len; i++) {
duke@1:                 if (!isSameType(arr1[i], arr2[i], types)) {
duke@1:                     return Integer.MAX_VALUE;
duke@1:                 }
duke@1:             }
duke@1:             return diff_length;
duke@1:         }
duke@1:     }
duke@1: 
duke@1:     void writeFields(Scope.Entry e) {
duke@1:         // process them in reverse sibling order;
duke@1:         // i.e., process them in declaration order.
duke@1:         List<VarSymbol> vars = List.nil();
duke@1:         for (Scope.Entry i = e; i != null; i = i.sibling) {
duke@1:             if (i.sym.kind == VAR) vars = vars.prepend((VarSymbol)i.sym);
duke@1:         }
duke@1:         while (vars.nonEmpty()) {
duke@1:             writeField(vars.head);
duke@1:             vars = vars.tail;
duke@1:         }
duke@1:     }
duke@1: 
duke@1:     void writeMethods(Scope.Entry e) {
duke@1:         List<MethodSymbol> methods = List.nil();
duke@1:         for (Scope.Entry i = e; i != null; i = i.sibling) {
duke@1:             if (i.sym.kind == MTH && (i.sym.flags() & HYPOTHETICAL) == 0)
duke@1:                 methods = methods.prepend((MethodSymbol)i.sym);
duke@1:         }
duke@1:         while (methods.nonEmpty()) {
duke@1:             writeMethod(methods.head);
duke@1:             methods = methods.tail;
duke@1:         }
duke@1:     }
duke@1: 
duke@1:     /** Emit a class file for a given class.
duke@1:      *  @param c      The class from which a class file is generated.
duke@1:      */
duke@1:     public JavaFileObject writeClass(ClassSymbol c)
duke@1:         throws IOException, PoolOverflow, StringOverflow
duke@1:     {
duke@1:         JavaFileObject outFile
duke@1:             = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
duke@1:                                                c.flatname.toString(),
duke@1:                                                JavaFileObject.Kind.CLASS,
duke@1:                                                c.sourcefile);
duke@1:         OutputStream out = outFile.openOutputStream();
duke@1:         try {
duke@1:             writeClassFile(out, c);
duke@1:             if (verbose)
jjg@909:                 log.printVerbose("wrote.file", outFile);
duke@1:             out.close();
duke@1:             out = null;
duke@1:         } finally {
duke@1:             if (out != null) {
duke@1:                 // if we are propogating an exception, delete the file
duke@1:                 out.close();
duke@1:                 outFile.delete();
duke@1:                 outFile = null;
duke@1:             }
duke@1:         }
duke@1:         return outFile; // may be null if write failed
duke@1:     }
duke@1: 
duke@1:     /** Write class `c' to outstream `out'.
duke@1:      */
duke@1:     public void writeClassFile(OutputStream out, ClassSymbol c)
duke@1:         throws IOException, PoolOverflow, StringOverflow {
jjg@816:         Assert.check((c.flags() & COMPOUND) == 0);
duke@1:         databuf.reset();
duke@1:         poolbuf.reset();
rfield@1587:         signatureGen.reset();
duke@1:         pool = c.pool;
duke@1:         innerClasses = null;
duke@1:         innerClassesQueue = null;
vromero@1452:         bootstrapMethods = new LinkedHashMap<DynamicMethod, MethodHandle>();
duke@1: 
duke@1:         Type supertype = types.supertype(c.type);
duke@1:         List<Type> interfaces = types.interfaces(c.type);
duke@1:         List<Type> typarams = c.type.getTypeArguments();
duke@1: 
mcimadamore@1393:         int flags = adjustFlags(c.flags() & ~DEFAULT);
duke@1:         if ((flags & PROTECTED) != 0) flags |= PUBLIC;
duke@1:         flags = flags & ClassFlags & ~STRICTFP;
duke@1:         if ((flags & INTERFACE) == 0) flags |= ACC_SUPER;
duke@1:         if (c.isInner() && c.name.isEmpty()) flags &= ~FINAL;
duke@1:         if (dumpClassModifiers) {
jjg@1135:             PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1135:             pw.println();
jjg@1135:             pw.println("CLASSFILE  " + c.getQualifiedName());
jjg@1135:             pw.println("---" + flagNames(flags));
duke@1:         }
duke@1:         databuf.appendChar(flags);
duke@1: 
duke@1:         databuf.appendChar(pool.put(c));
jjg@1374:         databuf.appendChar(supertype.hasTag(CLASS) ? pool.put(supertype.tsym) : 0);
duke@1:         databuf.appendChar(interfaces.length());
duke@1:         for (List<Type> l = interfaces; l.nonEmpty(); l = l.tail)
duke@1:             databuf.appendChar(pool.put(l.head.tsym));
duke@1:         int fieldsCount = 0;
duke@1:         int methodsCount = 0;
duke@1:         for (Scope.Entry e = c.members().elems; e != null; e = e.sibling) {
duke@1:             switch (e.sym.kind) {
duke@1:             case VAR: fieldsCount++; break;
duke@1:             case MTH: if ((e.sym.flags() & HYPOTHETICAL) == 0) methodsCount++;
duke@1:                       break;
duke@1:             case TYP: enterInner((ClassSymbol)e.sym); break;
jjg@816:             default : Assert.error();
duke@1:             }
duke@1:         }
mcimadamore@1086: 
mcimadamore@1086:         if (c.trans_local != null) {
mcimadamore@1086:             for (ClassSymbol local : c.trans_local) {
mcimadamore@1086:                 enterInner(local);
mcimadamore@1086:             }
mcimadamore@1086:         }
mcimadamore@1086: 
duke@1:         databuf.appendChar(fieldsCount);
duke@1:         writeFields(c.members().elems);
duke@1:         databuf.appendChar(methodsCount);
duke@1:         writeMethods(c.members().elems);
duke@1: 
duke@1:         int acountIdx = beginAttrs();
duke@1:         int acount = 0;
duke@1: 
duke@1:         boolean sigReq =
mcimadamore@297:             typarams.length() != 0 || supertype.allparams().length() != 0;
duke@1:         for (List<Type> l = interfaces; !sigReq && l.nonEmpty(); l = l.tail)
mcimadamore@297:             sigReq = l.head.allparams().length() != 0;
duke@1:         if (sigReq) {
jjg@816:             Assert.check(source.allowGenerics());
duke@1:             int alenIdx = writeAttr(names.Signature);
rfield@1587:             if (typarams.length() != 0) signatureGen.assembleParamsSig(typarams);
rfield@1587:             signatureGen.assembleSig(supertype);
duke@1:             for (List<Type> l = interfaces; l.nonEmpty(); l = l.tail)
rfield@1587:                 signatureGen.assembleSig(l.head);
rfield@1587:             databuf.appendChar(pool.put(signatureGen.toName()));
rfield@1587:             signatureGen.reset();
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         if (c.sourcefile != null && emitSourceFile) {
duke@1:             int alenIdx = writeAttr(names.SourceFile);
duke@1:             // WHM 6/29/1999: Strip file path prefix.  We do it here at
duke@1:             // the last possible moment because the sourcefile may be used
duke@1:             // elsewhere in error diagnostics. Fixes 4241573.
duke@1:             //databuf.appendChar(c.pool.put(c.sourcefile));
jjg@415:             String simpleName = BaseFileObject.getSimpleName(c.sourcefile);
jjg@415:             databuf.appendChar(c.pool.put(names.fromString(simpleName)));
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         if (genCrt) {
duke@1:             // Append SourceID attribute
duke@1:             int alenIdx = writeAttr(names.SourceID);
duke@1:             databuf.appendChar(c.pool.put(names.fromString(Long.toString(getLastModified(c.sourcefile)))));
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:             // Append CompilationID attribute
duke@1:             alenIdx = writeAttr(names.CompilationID);
duke@1:             databuf.appendChar(c.pool.put(names.fromString(Long.toString(System.currentTimeMillis()))));
duke@1:             endAttr(alenIdx);
duke@1:             acount++;
duke@1:         }
duke@1: 
duke@1:         acount += writeFlagAttrs(c.flags());
jfranck@1464:         acount += writeJavaAnnotations(c.getRawAttributes());
jjg@1521:         acount += writeTypeAnnotations(c.getRawTypeAttributes());
duke@1:         acount += writeEnclosingMethodAttribute(c);
ksrini@1309:         acount += writeExtraClassAttributes(c);
duke@1: 
duke@1:         poolbuf.appendInt(JAVA_MAGIC);
duke@1:         poolbuf.appendChar(target.minorVersion);
duke@1:         poolbuf.appendChar(target.majorVersion);
duke@1: 
duke@1:         writePool(c.pool);
duke@1: 
duke@1:         if (innerClasses != null) {
duke@1:             writeInnerClasses();
duke@1:             acount++;
duke@1:         }
mcimadamore@1336: 
mcimadamore@1336:         if (!bootstrapMethods.isEmpty()) {
mcimadamore@1336:             writeBootstrapMethods();
mcimadamore@1336:             acount++;
mcimadamore@1336:         }
mcimadamore@1336: 
duke@1:         endAttrs(acountIdx, acount);
duke@1: 
duke@1:         poolbuf.appendBytes(databuf.elems, 0, databuf.length);
duke@1:         out.write(poolbuf.elems, 0, poolbuf.length);
duke@1: 
duke@1:         pool = c.pool = null; // to conserve space
duke@1:      }
duke@1: 
ksrini@1309:     /**Allows subclasses to write additional class attributes
ksrini@1309:      *
ksrini@1309:      * @return the number of attributes written
ksrini@1309:      */
ksrini@1309:     protected int writeExtraClassAttributes(ClassSymbol c) {
ksrini@1309:         return 0;
ksrini@1309:     }
ksrini@1309: 
duke@1:     int adjustFlags(final long flags) {
duke@1:         int result = (int)flags;
duke@1:         if ((flags & SYNTHETIC) != 0  && !target.useSyntheticFlag())
duke@1:             result &= ~SYNTHETIC;
duke@1:         if ((flags & ENUM) != 0  && !target.useEnumFlag())
duke@1:             result &= ~ENUM;
duke@1:         if ((flags & ANNOTATION) != 0  && !target.useAnnotationFlag())
duke@1:             result &= ~ANNOTATION;
duke@1: 
duke@1:         if ((flags & BRIDGE) != 0  && target.useBridgeFlag())
duke@1:             result |= ACC_BRIDGE;
duke@1:         if ((flags & VARARGS) != 0  && target.useVarargsFlag())
duke@1:             result |= ACC_VARARGS;
mcimadamore@1393:         if ((flags & DEFAULT) != 0)
mcimadamore@1393:             result &= ~ABSTRACT;
duke@1:         return result;
duke@1:     }
duke@1: 
duke@1:     long getLastModified(FileObject filename) {
duke@1:         long mod = 0;
duke@1:         try {
duke@1:             mod = filename.getLastModified();
duke@1:         } catch (SecurityException e) {
duke@1:             throw new AssertionError("CRT: couldn't get source file modification date: " + e.getMessage());
duke@1:         }
duke@1:         return mod;
duke@1:     }
duke@1: }