aoqi@0: /*
vromero@2709:  * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.tools.javac.jvm;
aoqi@0: 
aoqi@0: import java.io.*;
aoqi@0: import java.util.LinkedHashMap;
aoqi@0: import java.util.Map;
aoqi@0: import java.util.Set;
aoqi@0: import java.util.HashSet;
aoqi@0: 
aoqi@0: import javax.tools.JavaFileManager;
aoqi@0: import javax.tools.FileObject;
aoqi@0: import javax.tools.JavaFileObject;
aoqi@0: 
aoqi@0: import com.sun.tools.javac.code.*;
aoqi@0: import com.sun.tools.javac.code.Attribute.RetentionPolicy;
aoqi@0: import com.sun.tools.javac.code.Symbol.*;
aoqi@0: import com.sun.tools.javac.code.Type.*;
aoqi@0: import com.sun.tools.javac.code.Types.UniqueType;
aoqi@0: import com.sun.tools.javac.file.BaseFileObject;
aoqi@0: import com.sun.tools.javac.jvm.Pool.DynamicMethod;
aoqi@0: import com.sun.tools.javac.jvm.Pool.Method;
aoqi@0: import com.sun.tools.javac.jvm.Pool.MethodHandle;
aoqi@0: import com.sun.tools.javac.jvm.Pool.Variable;
aoqi@0: import com.sun.tools.javac.util.*;
aoqi@0: 
aoqi@0: import static com.sun.tools.javac.code.Flags.*;
aoqi@0: import static com.sun.tools.javac.code.Kinds.*;
aoqi@0: import static com.sun.tools.javac.code.TypeTag.*;
aoqi@0: import static com.sun.tools.javac.jvm.UninitializedType.*;
aoqi@0: import static com.sun.tools.javac.main.Option.*;
aoqi@0: import static javax.tools.StandardLocation.CLASS_OUTPUT;
aoqi@0: 
aoqi@0: /** This class provides operations to map an internal symbol table graph
aoqi@0:  *  rooted in a ClassSymbol into a classfile.
aoqi@0:  *
aoqi@0:  *  <p><b>This is NOT part of any supported API.
aoqi@0:  *  If you write code that depends on this, you do so at your own risk.
aoqi@0:  *  This code and its internal interfaces are subject to change or
aoqi@0:  *  deletion without notice.</b>
aoqi@0:  */
aoqi@0: public class ClassWriter extends ClassFile {
aoqi@0:     protected static final Context.Key<ClassWriter> classWriterKey =
aoqi@0:         new Context.Key<ClassWriter>();
aoqi@0: 
aoqi@0:     private final Options options;
aoqi@0: 
aoqi@0:     /** Switch: verbose output.
aoqi@0:      */
aoqi@0:     private boolean verbose;
aoqi@0: 
aoqi@0:     /** Switch: scramble private field names.
aoqi@0:      */
aoqi@0:     private boolean scramble;
aoqi@0: 
aoqi@0:     /** Switch: scramble all field names.
aoqi@0:      */
aoqi@0:     private boolean scrambleAll;
aoqi@0: 
aoqi@0:     /** Switch: retrofit mode.
aoqi@0:      */
aoqi@0:     private boolean retrofit;
aoqi@0: 
aoqi@0:     /** Switch: emit source file attribute.
aoqi@0:      */
aoqi@0:     private boolean emitSourceFile;
aoqi@0: 
aoqi@0:     /** Switch: generate CharacterRangeTable attribute.
aoqi@0:      */
aoqi@0:     private boolean genCrt;
aoqi@0: 
aoqi@0:     /** Switch: describe the generated stackmap.
aoqi@0:      */
aoqi@0:     boolean debugstackmap;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Target class version.
aoqi@0:      */
aoqi@0:     private Target target;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Source language version.
aoqi@0:      */
aoqi@0:     private Source source;
aoqi@0: 
aoqi@0:     /** Type utilities. */
aoqi@0:     private Types types;
aoqi@0: 
aoqi@0:     /** The initial sizes of the data and constant pool buffers.
aoqi@0:      *  Sizes are increased when buffers get full.
aoqi@0:      */
aoqi@0:     static final int DATA_BUF_SIZE = 0x0fff0;
aoqi@0:     static final int POOL_BUF_SIZE = 0x1fff0;
aoqi@0: 
aoqi@0:     /** An output buffer for member info.
aoqi@0:      */
aoqi@0:     ByteBuffer databuf = new ByteBuffer(DATA_BUF_SIZE);
aoqi@0: 
aoqi@0:     /** An output buffer for the constant pool.
aoqi@0:      */
aoqi@0:     ByteBuffer poolbuf = new ByteBuffer(POOL_BUF_SIZE);
aoqi@0: 
aoqi@0:     /** The constant pool.
aoqi@0:      */
aoqi@0:     Pool pool;
aoqi@0: 
aoqi@0:     /** The inner classes to be written, as a set.
aoqi@0:      */
aoqi@0:     Set<ClassSymbol> innerClasses;
aoqi@0: 
aoqi@0:     /** The inner classes to be written, as a queue where
aoqi@0:      *  enclosing classes come first.
aoqi@0:      */
aoqi@0:     ListBuffer<ClassSymbol> innerClassesQueue;
aoqi@0: 
aoqi@0:     /** The bootstrap methods to be written in the corresponding class attribute
aoqi@0:      *  (one for each invokedynamic)
aoqi@0:      */
aoqi@0:     Map<DynamicMethod, MethodHandle> bootstrapMethods;
aoqi@0: 
aoqi@0:     /** The log to use for verbose output.
aoqi@0:      */
aoqi@0:     private final Log log;
aoqi@0: 
aoqi@0:     /** The name table. */
aoqi@0:     private final Names names;
aoqi@0: 
aoqi@0:     /** Access to files. */
aoqi@0:     private final JavaFileManager fileManager;
aoqi@0: 
aoqi@0:     /** Sole signature generator */
aoqi@0:     private final CWSignatureGenerator signatureGen;
aoqi@0: 
aoqi@0:     /** The tags and constants used in compressed stackmap. */
aoqi@0:     static final int SAME_FRAME_SIZE = 64;
aoqi@0:     static final int SAME_LOCALS_1_STACK_ITEM_EXTENDED = 247;
aoqi@0:     static final int SAME_FRAME_EXTENDED = 251;
aoqi@0:     static final int FULL_FRAME = 255;
aoqi@0:     static final int MAX_LOCAL_LENGTH_DIFF = 4;
aoqi@0: 
aoqi@0:     /** Get the ClassWriter instance for this context. */
aoqi@0:     public static ClassWriter instance(Context context) {
aoqi@0:         ClassWriter instance = context.get(classWriterKey);
aoqi@0:         if (instance == null)
aoqi@0:             instance = new ClassWriter(context);
aoqi@0:         return instance;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Construct a class writer, given an options table.
aoqi@0:      */
aoqi@0:     protected ClassWriter(Context context) {
aoqi@0:         context.put(classWriterKey, this);
aoqi@0: 
aoqi@0:         log = Log.instance(context);
aoqi@0:         names = Names.instance(context);
aoqi@0:         options = Options.instance(context);
aoqi@0:         target = Target.instance(context);
aoqi@0:         source = Source.instance(context);
aoqi@0:         types = Types.instance(context);
aoqi@0:         fileManager = context.get(JavaFileManager.class);
aoqi@0:         signatureGen = new CWSignatureGenerator(types);
aoqi@0: 
aoqi@0:         verbose        = options.isSet(VERBOSE);
aoqi@0:         scramble       = options.isSet("-scramble");
aoqi@0:         scrambleAll    = options.isSet("-scrambleAll");
aoqi@0:         retrofit       = options.isSet("-retrofit");
aoqi@0:         genCrt         = options.isSet(XJCOV);
aoqi@0:         debugstackmap  = options.isSet("debugstackmap");
aoqi@0: 
aoqi@0:         emitSourceFile = options.isUnset(G_CUSTOM) ||
aoqi@0:                             options.isSet(G_CUSTOM, "source");
aoqi@0: 
aoqi@0:         String dumpModFlags = options.get("dumpmodifiers");
aoqi@0:         dumpClassModifiers =
aoqi@0:             (dumpModFlags != null && dumpModFlags.indexOf('c') != -1);
aoqi@0:         dumpFieldModifiers =
aoqi@0:             (dumpModFlags != null && dumpModFlags.indexOf('f') != -1);
aoqi@0:         dumpInnerClassModifiers =
aoqi@0:             (dumpModFlags != null && dumpModFlags.indexOf('i') != -1);
aoqi@0:         dumpMethodModifiers =
aoqi@0:             (dumpModFlags != null && dumpModFlags.indexOf('m') != -1);
aoqi@0:     }
aoqi@0: 
aoqi@0: /******************************************************************
aoqi@0:  * Diagnostics: dump generated class names and modifiers
aoqi@0:  ******************************************************************/
aoqi@0: 
aoqi@0:     /** Value of option 'dumpmodifiers' is a string
aoqi@0:      *  indicating which modifiers should be dumped for debugging:
aoqi@0:      *    'c' -- classes
aoqi@0:      *    'f' -- fields
aoqi@0:      *    'i' -- innerclass attributes
aoqi@0:      *    'm' -- methods
aoqi@0:      *  For example, to dump everything:
aoqi@0:      *    javac -XDdumpmodifiers=cifm MyProg.java
aoqi@0:      */
aoqi@0:     private final boolean dumpClassModifiers; // -XDdumpmodifiers=c
aoqi@0:     private final boolean dumpFieldModifiers; // -XDdumpmodifiers=f
aoqi@0:     private final boolean dumpInnerClassModifiers; // -XDdumpmodifiers=i
aoqi@0:     private final boolean dumpMethodModifiers; // -XDdumpmodifiers=m
aoqi@0: 
aoqi@0: 
aoqi@0:     /** Return flags as a string, separated by " ".
aoqi@0:      */
aoqi@0:     public static String flagNames(long flags) {
aoqi@0:         StringBuilder sbuf = new StringBuilder();
aoqi@0:         int i = 0;
aoqi@0:         long f = flags & StandardFlags;
aoqi@0:         while (f != 0) {
aoqi@0:             if ((f & 1) != 0) {
aoqi@0:                 sbuf.append(" ");
aoqi@0:                 sbuf.append(flagName[i]);
aoqi@0:             }
aoqi@0:             f = f >> 1;
aoqi@0:             i++;
aoqi@0:         }
aoqi@0:         return sbuf.toString();
aoqi@0:     }
aoqi@0:     //where
aoqi@0:         private final static String[] flagName = {
aoqi@0:             "PUBLIC", "PRIVATE", "PROTECTED", "STATIC", "FINAL",
aoqi@0:             "SUPER", "VOLATILE", "TRANSIENT", "NATIVE", "INTERFACE",
aoqi@0:             "ABSTRACT", "STRICTFP"};
aoqi@0: 
aoqi@0: /******************************************************************
aoqi@0:  * Output routines
aoqi@0:  ******************************************************************/
aoqi@0: 
aoqi@0:     /** Write a character into given byte buffer;
aoqi@0:      *  byte buffer will not be grown.
aoqi@0:      */
aoqi@0:     void putChar(ByteBuffer buf, int op, int x) {
aoqi@0:         buf.elems[op  ] = (byte)((x >>  8) & 0xFF);
aoqi@0:         buf.elems[op+1] = (byte)((x      ) & 0xFF);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write an integer into given byte buffer;
aoqi@0:      *  byte buffer will not be grown.
aoqi@0:      */
aoqi@0:     void putInt(ByteBuffer buf, int adr, int x) {
aoqi@0:         buf.elems[adr  ] = (byte)((x >> 24) & 0xFF);
aoqi@0:         buf.elems[adr+1] = (byte)((x >> 16) & 0xFF);
aoqi@0:         buf.elems[adr+2] = (byte)((x >>  8) & 0xFF);
aoqi@0:         buf.elems[adr+3] = (byte)((x      ) & 0xFF);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Signature Generation
aoqi@0:      */
aoqi@0:     private class CWSignatureGenerator extends Types.SignatureGenerator {
aoqi@0: 
aoqi@0:         /**
aoqi@0:          * An output buffer for type signatures.
aoqi@0:          */
aoqi@0:         ByteBuffer sigbuf = new ByteBuffer();
aoqi@0: 
aoqi@0:         CWSignatureGenerator(Types types) {
aoqi@0:             super(types);
aoqi@0:         }
aoqi@0: 
aoqi@0:         /**
aoqi@0:          * Assemble signature of given type in string buffer.
aoqi@0:          * Check for uninitialized types before calling the general case.
aoqi@0:          */
aoqi@0:         @Override
aoqi@0:         public void assembleSig(Type type) {
aoqi@0:             type = type.unannotatedType();
aoqi@0:             switch (type.getTag()) {
aoqi@0:                 case UNINITIALIZED_THIS:
aoqi@0:                 case UNINITIALIZED_OBJECT:
aoqi@0:                     // we don't yet have a spec for uninitialized types in the
aoqi@0:                     // local variable table
aoqi@0:                     assembleSig(types.erasure(((UninitializedType)type).qtype));
aoqi@0:                     break;
aoqi@0:                 default:
aoqi@0:                     super.assembleSig(type);
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         protected void append(char ch) {
aoqi@0:             sigbuf.appendByte(ch);
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         protected void append(byte[] ba) {
aoqi@0:             sigbuf.appendBytes(ba);
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         protected void append(Name name) {
aoqi@0:             sigbuf.appendName(name);
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         protected void classReference(ClassSymbol c) {
aoqi@0:             enterInner(c);
aoqi@0:         }
aoqi@0: 
aoqi@0:         private void reset() {
aoqi@0:             sigbuf.reset();
aoqi@0:         }
aoqi@0: 
aoqi@0:         private Name toName() {
aoqi@0:             return sigbuf.toName(names);
aoqi@0:         }
aoqi@0: 
aoqi@0:         private boolean isEmpty() {
aoqi@0:             return sigbuf.length == 0;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return signature of given type
aoqi@0:      */
aoqi@0:     Name typeSig(Type type) {
aoqi@0:         Assert.check(signatureGen.isEmpty());
aoqi@0:         //- System.out.println(" ? " + type);
aoqi@0:         signatureGen.assembleSig(type);
aoqi@0:         Name n = signatureGen.toName();
aoqi@0:         signatureGen.reset();
aoqi@0:         //- System.out.println("   " + n);
aoqi@0:         return n;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Given a type t, return the extended class name of its erasure in
aoqi@0:      *  external representation.
aoqi@0:      */
aoqi@0:     public Name xClassName(Type t) {
aoqi@0:         if (t.hasTag(CLASS)) {
aoqi@0:             return names.fromUtf(externalize(t.tsym.flatName()));
aoqi@0:         } else if (t.hasTag(ARRAY)) {
aoqi@0:             return typeSig(types.erasure(t));
aoqi@0:         } else {
aoqi@0:             throw new AssertionError("xClassName");
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0: /******************************************************************
aoqi@0:  * Writing the Constant Pool
aoqi@0:  ******************************************************************/
aoqi@0: 
aoqi@0:     /** Thrown when the constant pool is over full.
aoqi@0:      */
aoqi@0:     public static class PoolOverflow extends Exception {
aoqi@0:         private static final long serialVersionUID = 0;
aoqi@0:         public PoolOverflow() {}
aoqi@0:     }
aoqi@0:     public static class StringOverflow extends Exception {
aoqi@0:         private static final long serialVersionUID = 0;
aoqi@0:         public final String value;
aoqi@0:         public StringOverflow(String s) {
aoqi@0:             value = s;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write constant pool to pool buffer.
aoqi@0:      *  Note: during writing, constant pool
aoqi@0:      *  might grow since some parts of constants still need to be entered.
aoqi@0:      */
aoqi@0:     void writePool(Pool pool) throws PoolOverflow, StringOverflow {
aoqi@0:         int poolCountIdx = poolbuf.length;
aoqi@0:         poolbuf.appendChar(0);
aoqi@0:         int i = 1;
aoqi@0:         while (i < pool.pp) {
aoqi@0:             Object value = pool.pool[i];
aoqi@0:             Assert.checkNonNull(value);
aoqi@0:             if (value instanceof Method || value instanceof Variable)
aoqi@0:                 value = ((DelegatedSymbol)value).getUnderlyingSymbol();
aoqi@0: 
aoqi@0:             if (value instanceof MethodSymbol) {
aoqi@0:                 MethodSymbol m = (MethodSymbol)value;
aoqi@0:                 if (!m.isDynamic()) {
aoqi@0:                     poolbuf.appendByte((m.owner.flags() & INTERFACE) != 0
aoqi@0:                               ? CONSTANT_InterfaceMethodref
aoqi@0:                               : CONSTANT_Methodref);
aoqi@0:                     poolbuf.appendChar(pool.put(m.owner));
aoqi@0:                     poolbuf.appendChar(pool.put(nameType(m)));
aoqi@0:                 } else {
aoqi@0:                     //invokedynamic
aoqi@0:                     DynamicMethodSymbol dynSym = (DynamicMethodSymbol)m;
aoqi@0:                     MethodHandle handle = new MethodHandle(dynSym.bsmKind, dynSym.bsm, types);
aoqi@0:                     DynamicMethod dynMeth = new DynamicMethod(dynSym, types);
aoqi@0:                     bootstrapMethods.put(dynMeth, handle);
aoqi@0:                     //init cp entries
aoqi@0:                     pool.put(names.BootstrapMethods);
aoqi@0:                     pool.put(handle);
aoqi@0:                     for (Object staticArg : dynSym.staticArgs) {
aoqi@0:                         pool.put(staticArg);
aoqi@0:                     }
aoqi@0:                     poolbuf.appendByte(CONSTANT_InvokeDynamic);
aoqi@0:                     poolbuf.appendChar(bootstrapMethods.size() - 1);
aoqi@0:                     poolbuf.appendChar(pool.put(nameType(dynSym)));
aoqi@0:                 }
aoqi@0:             } else if (value instanceof VarSymbol) {
aoqi@0:                 VarSymbol v = (VarSymbol)value;
aoqi@0:                 poolbuf.appendByte(CONSTANT_Fieldref);
aoqi@0:                 poolbuf.appendChar(pool.put(v.owner));
aoqi@0:                 poolbuf.appendChar(pool.put(nameType(v)));
aoqi@0:             } else if (value instanceof Name) {
aoqi@0:                 poolbuf.appendByte(CONSTANT_Utf8);
aoqi@0:                 byte[] bs = ((Name)value).toUtf();
aoqi@0:                 poolbuf.appendChar(bs.length);
aoqi@0:                 poolbuf.appendBytes(bs, 0, bs.length);
aoqi@0:                 if (bs.length > Pool.MAX_STRING_LENGTH)
aoqi@0:                     throw new StringOverflow(value.toString());
aoqi@0:             } else if (value instanceof ClassSymbol) {
aoqi@0:                 ClassSymbol c = (ClassSymbol)value;
aoqi@0:                 if (c.owner.kind == TYP) pool.put(c.owner);
aoqi@0:                 poolbuf.appendByte(CONSTANT_Class);
aoqi@0:                 if (c.type.hasTag(ARRAY)) {
aoqi@0:                     poolbuf.appendChar(pool.put(typeSig(c.type)));
aoqi@0:                 } else {
aoqi@0:                     poolbuf.appendChar(pool.put(names.fromUtf(externalize(c.flatname))));
aoqi@0:                     enterInner(c);
aoqi@0:                 }
aoqi@0:             } else if (value instanceof NameAndType) {
aoqi@0:                 NameAndType nt = (NameAndType)value;
aoqi@0:                 poolbuf.appendByte(CONSTANT_NameandType);
aoqi@0:                 poolbuf.appendChar(pool.put(nt.name));
aoqi@0:                 poolbuf.appendChar(pool.put(typeSig(nt.uniqueType.type)));
aoqi@0:             } else if (value instanceof Integer) {
aoqi@0:                 poolbuf.appendByte(CONSTANT_Integer);
aoqi@0:                 poolbuf.appendInt(((Integer)value).intValue());
aoqi@0:             } else if (value instanceof Long) {
aoqi@0:                 poolbuf.appendByte(CONSTANT_Long);
aoqi@0:                 poolbuf.appendLong(((Long)value).longValue());
aoqi@0:                 i++;
aoqi@0:             } else if (value instanceof Float) {
aoqi@0:                 poolbuf.appendByte(CONSTANT_Float);
aoqi@0:                 poolbuf.appendFloat(((Float)value).floatValue());
aoqi@0:             } else if (value instanceof Double) {
aoqi@0:                 poolbuf.appendByte(CONSTANT_Double);
aoqi@0:                 poolbuf.appendDouble(((Double)value).doubleValue());
aoqi@0:                 i++;
aoqi@0:             } else if (value instanceof String) {
aoqi@0:                 poolbuf.appendByte(CONSTANT_String);
aoqi@0:                 poolbuf.appendChar(pool.put(names.fromString((String)value)));
aoqi@0:             } else if (value instanceof UniqueType) {
aoqi@0:                 Type type = ((UniqueType)value).type;
aoqi@0:                 if (type instanceof MethodType) {
aoqi@0:                     poolbuf.appendByte(CONSTANT_MethodType);
aoqi@0:                     poolbuf.appendChar(pool.put(typeSig((MethodType)type)));
aoqi@0:                 } else {
aoqi@0:                     if (type.hasTag(CLASS)) enterInner((ClassSymbol)type.tsym);
aoqi@0:                     poolbuf.appendByte(CONSTANT_Class);
aoqi@0:                     poolbuf.appendChar(pool.put(xClassName(type)));
aoqi@0:                 }
aoqi@0:             } else if (value instanceof MethodHandle) {
aoqi@0:                 MethodHandle ref = (MethodHandle)value;
aoqi@0:                 poolbuf.appendByte(CONSTANT_MethodHandle);
aoqi@0:                 poolbuf.appendByte(ref.refKind);
aoqi@0:                 poolbuf.appendChar(pool.put(ref.refSym));
aoqi@0:             } else {
aoqi@0:                 Assert.error("writePool " + value);
aoqi@0:             }
aoqi@0:             i++;
aoqi@0:         }
aoqi@0:         if (pool.pp > Pool.MAX_ENTRIES)
aoqi@0:             throw new PoolOverflow();
aoqi@0:         putChar(poolbuf, poolCountIdx, pool.pp);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Given a field, return its name.
aoqi@0:      */
aoqi@0:     Name fieldName(Symbol sym) {
aoqi@0:         if (scramble && (sym.flags() & PRIVATE) != 0 ||
aoqi@0:             scrambleAll && (sym.flags() & (PROTECTED | PUBLIC)) == 0)
aoqi@0:             return names.fromString("_$" + sym.name.getIndex());
aoqi@0:         else
aoqi@0:             return sym.name;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Given a symbol, return its name-and-type.
aoqi@0:      */
aoqi@0:     NameAndType nameType(Symbol sym) {
aoqi@0:         return new NameAndType(fieldName(sym),
aoqi@0:                                retrofit
aoqi@0:                                ? sym.erasure(types)
aoqi@0:                                : sym.externalType(types), types);
aoqi@0:         // if we retrofit, then the NameAndType has been read in as is
aoqi@0:         // and no change is necessary. If we compile normally, the
aoqi@0:         // NameAndType is generated from a symbol reference, and the
aoqi@0:         // adjustment of adding an additional this$n parameter needs to be made.
aoqi@0:     }
aoqi@0: 
aoqi@0: /******************************************************************
aoqi@0:  * Writing Attributes
aoqi@0:  ******************************************************************/
aoqi@0: 
aoqi@0:     /** Write header for an attribute to data buffer and return
aoqi@0:      *  position past attribute length index.
aoqi@0:      */
aoqi@0:     int writeAttr(Name attrName) {
aoqi@0:         databuf.appendChar(pool.put(attrName));
aoqi@0:         databuf.appendInt(0);
aoqi@0:         return databuf.length;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Fill in attribute length.
aoqi@0:      */
aoqi@0:     void endAttr(int index) {
aoqi@0:         putInt(databuf, index - 4, databuf.length - index);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Leave space for attribute count and return index for
aoqi@0:      *  number of attributes field.
aoqi@0:      */
aoqi@0:     int beginAttrs() {
aoqi@0:         databuf.appendChar(0);
aoqi@0:         return databuf.length;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Fill in number of attributes.
aoqi@0:      */
aoqi@0:     void endAttrs(int index, int count) {
aoqi@0:         putChar(databuf, index - 2, count);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write the EnclosingMethod attribute if needed.
aoqi@0:      *  Returns the number of attributes written (0 or 1).
aoqi@0:      */
aoqi@0:     int writeEnclosingMethodAttribute(ClassSymbol c) {
aoqi@0:         if (!target.hasEnclosingMethodAttribute())
aoqi@0:             return 0;
aoqi@0:         return writeEnclosingMethodAttribute(names.EnclosingMethod, c);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write the EnclosingMethod attribute with a specified name.
aoqi@0:      *  Returns the number of attributes written (0 or 1).
aoqi@0:      */
aoqi@0:     protected int writeEnclosingMethodAttribute(Name attributeName, ClassSymbol c) {
aoqi@0:         if (c.owner.kind != MTH && // neither a local class
aoqi@0:             c.name != names.empty) // nor anonymous
aoqi@0:             return 0;
aoqi@0: 
aoqi@0:         int alenIdx = writeAttr(attributeName);
aoqi@0:         ClassSymbol enclClass = c.owner.enclClass();
aoqi@0:         MethodSymbol enclMethod =
aoqi@0:             (c.owner.type == null // local to init block
aoqi@0:              || c.owner.kind != MTH) // or member init
aoqi@0:             ? null
aoqi@0:             : (MethodSymbol)c.owner;
aoqi@0:         databuf.appendChar(pool.put(enclClass));
aoqi@0:         databuf.appendChar(enclMethod == null ? 0 : pool.put(nameType(c.owner)));
aoqi@0:         endAttr(alenIdx);
aoqi@0:         return 1;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write flag attributes; return number of attributes written.
aoqi@0:      */
aoqi@0:     int writeFlagAttrs(long flags) {
aoqi@0:         int acount = 0;
aoqi@0:         if ((flags & DEPRECATED) != 0) {
aoqi@0:             int alenIdx = writeAttr(names.Deprecated);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if ((flags & ENUM) != 0 && !target.useEnumFlag()) {
aoqi@0:             int alenIdx = writeAttr(names.Enum);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if ((flags & SYNTHETIC) != 0 && !target.useSyntheticFlag()) {
aoqi@0:             int alenIdx = writeAttr(names.Synthetic);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if ((flags & BRIDGE) != 0 && !target.useBridgeFlag()) {
aoqi@0:             int alenIdx = writeAttr(names.Bridge);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if ((flags & VARARGS) != 0 && !target.useVarargsFlag()) {
aoqi@0:             int alenIdx = writeAttr(names.Varargs);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if ((flags & ANNOTATION) != 0 && !target.useAnnotationFlag()) {
aoqi@0:             int alenIdx = writeAttr(names.Annotation);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         return acount;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write member (field or method) attributes;
aoqi@0:      *  return number of attributes written.
aoqi@0:      */
aoqi@0:     int writeMemberAttrs(Symbol sym) {
aoqi@0:         int acount = writeFlagAttrs(sym.flags());
aoqi@0:         long flags = sym.flags();
aoqi@0:         if (source.allowGenerics() &&
aoqi@0:             (flags & (SYNTHETIC|BRIDGE)) != SYNTHETIC &&
aoqi@0:             (flags & ANONCONSTR) == 0 &&
aoqi@0:             (!types.isSameType(sym.type, sym.erasure(types)) ||
aoqi@0:             signatureGen.hasTypeVar(sym.type.getThrownTypes()))) {
aoqi@0:             // note that a local class with captured variables
aoqi@0:             // will get a signature attribute
aoqi@0:             int alenIdx = writeAttr(names.Signature);
aoqi@0:             databuf.appendChar(pool.put(typeSig(sym.type)));
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         acount += writeJavaAnnotations(sym.getRawAttributes());
aoqi@0:         acount += writeTypeAnnotations(sym.getRawTypeAttributes(), false);
aoqi@0:         return acount;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Write method parameter names attribute.
aoqi@0:      */
aoqi@0:     int writeMethodParametersAttr(MethodSymbol m) {
aoqi@0:         MethodType ty = m.externalType(types).asMethodType();
aoqi@0:         final int allparams = ty.argtypes.size();
aoqi@0:         if (m.params != null && allparams != 0) {
aoqi@0:             final int attrIndex = writeAttr(names.MethodParameters);
aoqi@0:             databuf.appendByte(allparams);
aoqi@0:             // Write extra parameters first
aoqi@0:             for (VarSymbol s : m.extraParams) {
aoqi@0:                 final int flags =
aoqi@0:                     ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
aoqi@0:                     ((int) m.flags() & SYNTHETIC);
aoqi@0:                 databuf.appendChar(pool.put(s.name));
aoqi@0:                 databuf.appendChar(flags);
aoqi@0:             }
aoqi@0:             // Now write the real parameters
aoqi@0:             for (VarSymbol s : m.params) {
aoqi@0:                 final int flags =
aoqi@0:                     ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
aoqi@0:                     ((int) m.flags() & SYNTHETIC);
aoqi@0:                 databuf.appendChar(pool.put(s.name));
aoqi@0:                 databuf.appendChar(flags);
aoqi@0:             }
aoqi@0:             // Now write the captured locals
aoqi@0:             for (VarSymbol s : m.capturedLocals) {
aoqi@0:                 final int flags =
aoqi@0:                     ((int) s.flags() & (FINAL | SYNTHETIC | MANDATED)) |
aoqi@0:                     ((int) m.flags() & SYNTHETIC);
aoqi@0:                 databuf.appendChar(pool.put(s.name));
aoqi@0:                 databuf.appendChar(flags);
aoqi@0:             }
aoqi@0:             endAttr(attrIndex);
aoqi@0:             return 1;
aoqi@0:         } else
aoqi@0:             return 0;
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     /** Write method parameter annotations;
aoqi@0:      *  return number of attributes written.
aoqi@0:      */
aoqi@0:     int writeParameterAttrs(MethodSymbol m) {
aoqi@0:         boolean hasVisible = false;
aoqi@0:         boolean hasInvisible = false;
aoqi@0:         if (m.params != null) {
aoqi@0:             for (VarSymbol s : m.params) {
aoqi@0:                 for (Attribute.Compound a : s.getRawAttributes()) {
aoqi@0:                     switch (types.getRetention(a)) {
aoqi@0:                     case SOURCE: break;
aoqi@0:                     case CLASS: hasInvisible = true; break;
aoqi@0:                     case RUNTIME: hasVisible = true; break;
aoqi@0:                     default: ;// /* fail soft */ throw new AssertionError(vis);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         int attrCount = 0;
aoqi@0:         if (hasVisible) {
aoqi@0:             int attrIndex = writeAttr(names.RuntimeVisibleParameterAnnotations);
aoqi@0:             databuf.appendByte(m.params.length());
aoqi@0:             for (VarSymbol s : m.params) {
aoqi@0:                 ListBuffer<Attribute.Compound> buf = new ListBuffer<Attribute.Compound>();
aoqi@0:                 for (Attribute.Compound a : s.getRawAttributes())
aoqi@0:                     if (types.getRetention(a) == RetentionPolicy.RUNTIME)
aoqi@0:                         buf.append(a);
aoqi@0:                 databuf.appendChar(buf.length());
aoqi@0:                 for (Attribute.Compound a : buf)
aoqi@0:                     writeCompoundAttribute(a);
aoqi@0:             }
aoqi@0:             endAttr(attrIndex);
aoqi@0:             attrCount++;
aoqi@0:         }
aoqi@0:         if (hasInvisible) {
aoqi@0:             int attrIndex = writeAttr(names.RuntimeInvisibleParameterAnnotations);
aoqi@0:             databuf.appendByte(m.params.length());
aoqi@0:             for (VarSymbol s : m.params) {
aoqi@0:                 ListBuffer<Attribute.Compound> buf = new ListBuffer<Attribute.Compound>();
aoqi@0:                 for (Attribute.Compound a : s.getRawAttributes())
aoqi@0:                     if (types.getRetention(a) == RetentionPolicy.CLASS)
aoqi@0:                         buf.append(a);
aoqi@0:                 databuf.appendChar(buf.length());
aoqi@0:                 for (Attribute.Compound a : buf)
aoqi@0:                     writeCompoundAttribute(a);
aoqi@0:             }
aoqi@0:             endAttr(attrIndex);
aoqi@0:             attrCount++;
aoqi@0:         }
aoqi@0:         return attrCount;
aoqi@0:     }
aoqi@0: 
aoqi@0: /**********************************************************************
aoqi@0:  * Writing Java-language annotations (aka metadata, attributes)
aoqi@0:  **********************************************************************/
aoqi@0: 
aoqi@0:     /** Write Java-language annotations; return number of JVM
aoqi@0:      *  attributes written (zero or one).
aoqi@0:      */
aoqi@0:     int writeJavaAnnotations(List<Attribute.Compound> attrs) {
aoqi@0:         if (attrs.isEmpty()) return 0;
aoqi@0:         ListBuffer<Attribute.Compound> visibles = new ListBuffer<Attribute.Compound>();
aoqi@0:         ListBuffer<Attribute.Compound> invisibles = new ListBuffer<Attribute.Compound>();
aoqi@0:         for (Attribute.Compound a : attrs) {
aoqi@0:             switch (types.getRetention(a)) {
aoqi@0:             case SOURCE: break;
aoqi@0:             case CLASS: invisibles.append(a); break;
aoqi@0:             case RUNTIME: visibles.append(a); break;
aoqi@0:             default: ;// /* fail soft */ throw new AssertionError(vis);
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         int attrCount = 0;
aoqi@0:         if (visibles.length() != 0) {
aoqi@0:             int attrIndex = writeAttr(names.RuntimeVisibleAnnotations);
aoqi@0:             databuf.appendChar(visibles.length());
aoqi@0:             for (Attribute.Compound a : visibles)
aoqi@0:                 writeCompoundAttribute(a);
aoqi@0:             endAttr(attrIndex);
aoqi@0:             attrCount++;
aoqi@0:         }
aoqi@0:         if (invisibles.length() != 0) {
aoqi@0:             int attrIndex = writeAttr(names.RuntimeInvisibleAnnotations);
aoqi@0:             databuf.appendChar(invisibles.length());
aoqi@0:             for (Attribute.Compound a : invisibles)
aoqi@0:                 writeCompoundAttribute(a);
aoqi@0:             endAttr(attrIndex);
aoqi@0:             attrCount++;
aoqi@0:         }
aoqi@0:         return attrCount;
aoqi@0:     }
aoqi@0: 
aoqi@0:     int writeTypeAnnotations(List<Attribute.TypeCompound> typeAnnos, boolean inCode) {
aoqi@0:         if (typeAnnos.isEmpty()) return 0;
aoqi@0: 
aoqi@0:         ListBuffer<Attribute.TypeCompound> visibles = new ListBuffer<>();
aoqi@0:         ListBuffer<Attribute.TypeCompound> invisibles = new ListBuffer<>();
aoqi@0: 
aoqi@0:         for (Attribute.TypeCompound tc : typeAnnos) {
aoqi@0:             if (tc.hasUnknownPosition()) {
aoqi@0:                 boolean fixed = tc.tryFixPosition();
aoqi@0: 
aoqi@0:                 // Could we fix it?
aoqi@0:                 if (!fixed) {
aoqi@0:                     // This happens for nested types like @A Outer. @B Inner.
aoqi@0:                     // For method parameters we get the annotation twice! Once with
aoqi@0:                     // a valid position, once unknown.
aoqi@0:                     // TODO: find a cleaner solution.
aoqi@0:                     PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
aoqi@0:                     pw.println("ClassWriter: Position UNKNOWN in type annotation: " + tc);
aoqi@0:                     continue;
aoqi@0:                 }
aoqi@0:             }
aoqi@0: 
aoqi@0:             if (tc.position.type.isLocal() != inCode)
aoqi@0:                 continue;
aoqi@0:             if (!tc.position.emitToClassfile())
aoqi@0:                 continue;
aoqi@0:             switch (types.getRetention(tc)) {
aoqi@0:             case SOURCE: break;
aoqi@0:             case CLASS: invisibles.append(tc); break;
aoqi@0:             case RUNTIME: visibles.append(tc); break;
aoqi@0:             default: ;// /* fail soft */ throw new AssertionError(vis);
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         int attrCount = 0;
aoqi@0:         if (visibles.length() != 0) {
aoqi@0:             int attrIndex = writeAttr(names.RuntimeVisibleTypeAnnotations);
aoqi@0:             databuf.appendChar(visibles.length());
aoqi@0:             for (Attribute.TypeCompound p : visibles)
aoqi@0:                 writeTypeAnnotation(p);
aoqi@0:             endAttr(attrIndex);
aoqi@0:             attrCount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (invisibles.length() != 0) {
aoqi@0:             int attrIndex = writeAttr(names.RuntimeInvisibleTypeAnnotations);
aoqi@0:             databuf.appendChar(invisibles.length());
aoqi@0:             for (Attribute.TypeCompound p : invisibles)
aoqi@0:                 writeTypeAnnotation(p);
aoqi@0:             endAttr(attrIndex);
aoqi@0:             attrCount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         return attrCount;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** A visitor to write an attribute including its leading
aoqi@0:      *  single-character marker.
aoqi@0:      */
aoqi@0:     class AttributeWriter implements Attribute.Visitor {
aoqi@0:         public void visitConstant(Attribute.Constant _value) {
aoqi@0:             Object value = _value.value;
aoqi@0:             switch (_value.type.getTag()) {
aoqi@0:             case BYTE:
aoqi@0:                 databuf.appendByte('B');
aoqi@0:                 break;
aoqi@0:             case CHAR:
aoqi@0:                 databuf.appendByte('C');
aoqi@0:                 break;
aoqi@0:             case SHORT:
aoqi@0:                 databuf.appendByte('S');
aoqi@0:                 break;
aoqi@0:             case INT:
aoqi@0:                 databuf.appendByte('I');
aoqi@0:                 break;
aoqi@0:             case LONG:
aoqi@0:                 databuf.appendByte('J');
aoqi@0:                 break;
aoqi@0:             case FLOAT:
aoqi@0:                 databuf.appendByte('F');
aoqi@0:                 break;
aoqi@0:             case DOUBLE:
aoqi@0:                 databuf.appendByte('D');
aoqi@0:                 break;
aoqi@0:             case BOOLEAN:
aoqi@0:                 databuf.appendByte('Z');
aoqi@0:                 break;
aoqi@0:             case CLASS:
aoqi@0:                 Assert.check(value instanceof String);
aoqi@0:                 databuf.appendByte('s');
aoqi@0:                 value = names.fromString(value.toString()); // CONSTANT_Utf8
aoqi@0:                 break;
aoqi@0:             default:
aoqi@0:                 throw new AssertionError(_value.type);
aoqi@0:             }
aoqi@0:             databuf.appendChar(pool.put(value));
aoqi@0:         }
aoqi@0:         public void visitEnum(Attribute.Enum e) {
aoqi@0:             databuf.appendByte('e');
aoqi@0:             databuf.appendChar(pool.put(typeSig(e.value.type)));
aoqi@0:             databuf.appendChar(pool.put(e.value.name));
aoqi@0:         }
aoqi@0:         public void visitClass(Attribute.Class clazz) {
aoqi@0:             databuf.appendByte('c');
aoqi@0:             databuf.appendChar(pool.put(typeSig(clazz.classType)));
aoqi@0:         }
aoqi@0:         public void visitCompound(Attribute.Compound compound) {
aoqi@0:             databuf.appendByte('@');
aoqi@0:             writeCompoundAttribute(compound);
aoqi@0:         }
aoqi@0:         public void visitError(Attribute.Error x) {
aoqi@0:             throw new AssertionError(x);
aoqi@0:         }
aoqi@0:         public void visitArray(Attribute.Array array) {
aoqi@0:             databuf.appendByte('[');
aoqi@0:             databuf.appendChar(array.values.length);
aoqi@0:             for (Attribute a : array.values) {
aoqi@0:                 a.accept(this);
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0:     AttributeWriter awriter = new AttributeWriter();
aoqi@0: 
aoqi@0:     /** Write a compound attribute excluding the '@' marker. */
aoqi@0:     void writeCompoundAttribute(Attribute.Compound c) {
aoqi@0:         databuf.appendChar(pool.put(typeSig(c.type)));
aoqi@0:         databuf.appendChar(c.values.length());
aoqi@0:         for (Pair<Symbol.MethodSymbol,Attribute> p : c.values) {
aoqi@0:             databuf.appendChar(pool.put(p.fst.name));
aoqi@0:             p.snd.accept(awriter);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     void writeTypeAnnotation(Attribute.TypeCompound c) {
aoqi@0:         writePosition(c.position);
aoqi@0:         writeCompoundAttribute(c);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void writePosition(TypeAnnotationPosition p) {
aoqi@0:         databuf.appendByte(p.type.targetTypeValue()); // TargetType tag is a byte
aoqi@0:         switch (p.type) {
aoqi@0:         // instanceof
aoqi@0:         case INSTANCEOF:
aoqi@0:         // new expression
aoqi@0:         case NEW:
aoqi@0:         // constructor/method reference receiver
aoqi@0:         case CONSTRUCTOR_REFERENCE:
aoqi@0:         case METHOD_REFERENCE:
aoqi@0:             databuf.appendChar(p.offset);
aoqi@0:             break;
aoqi@0:         // local variable
aoqi@0:         case LOCAL_VARIABLE:
aoqi@0:         // resource variable
aoqi@0:         case RESOURCE_VARIABLE:
aoqi@0:             databuf.appendChar(p.lvarOffset.length);  // for table length
aoqi@0:             for (int i = 0; i < p.lvarOffset.length; ++i) {
aoqi@0:                 databuf.appendChar(p.lvarOffset[i]);
aoqi@0:                 databuf.appendChar(p.lvarLength[i]);
aoqi@0:                 databuf.appendChar(p.lvarIndex[i]);
aoqi@0:             }
aoqi@0:             break;
aoqi@0:         // exception parameter
aoqi@0:         case EXCEPTION_PARAMETER:
aoqi@0:             databuf.appendChar(p.exception_index);
aoqi@0:             break;
aoqi@0:         // method receiver
aoqi@0:         case METHOD_RECEIVER:
aoqi@0:             // Do nothing
aoqi@0:             break;
aoqi@0:         // type parameter
aoqi@0:         case CLASS_TYPE_PARAMETER:
aoqi@0:         case METHOD_TYPE_PARAMETER:
aoqi@0:             databuf.appendByte(p.parameter_index);
aoqi@0:             break;
aoqi@0:         // type parameter bound
aoqi@0:         case CLASS_TYPE_PARAMETER_BOUND:
aoqi@0:         case METHOD_TYPE_PARAMETER_BOUND:
aoqi@0:             databuf.appendByte(p.parameter_index);
aoqi@0:             databuf.appendByte(p.bound_index);
aoqi@0:             break;
aoqi@0:         // class extends or implements clause
aoqi@0:         case CLASS_EXTENDS:
aoqi@0:             databuf.appendChar(p.type_index);
aoqi@0:             break;
aoqi@0:         // throws
aoqi@0:         case THROWS:
aoqi@0:             databuf.appendChar(p.type_index);
aoqi@0:             break;
aoqi@0:         // method parameter
aoqi@0:         case METHOD_FORMAL_PARAMETER:
aoqi@0:             databuf.appendByte(p.parameter_index);
aoqi@0:             break;
aoqi@0:         // type cast
aoqi@0:         case CAST:
aoqi@0:         // method/constructor/reference type argument
aoqi@0:         case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
aoqi@0:         case METHOD_INVOCATION_TYPE_ARGUMENT:
aoqi@0:         case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
aoqi@0:         case METHOD_REFERENCE_TYPE_ARGUMENT:
aoqi@0:             databuf.appendChar(p.offset);
aoqi@0:             databuf.appendByte(p.type_index);
aoqi@0:             break;
aoqi@0:         // We don't need to worry about these
aoqi@0:         case METHOD_RETURN:
aoqi@0:         case FIELD:
aoqi@0:             break;
aoqi@0:         case UNKNOWN:
aoqi@0:             throw new AssertionError("jvm.ClassWriter: UNKNOWN target type should never occur!");
aoqi@0:         default:
aoqi@0:             throw new AssertionError("jvm.ClassWriter: Unknown target type for position: " + p);
aoqi@0:         }
aoqi@0: 
aoqi@0:         { // Append location data for generics/arrays.
aoqi@0:             databuf.appendByte(p.location.size());
aoqi@0:             java.util.List<Integer> loc = TypeAnnotationPosition.getBinaryFromTypePath(p.location);
aoqi@0:             for (int i : loc)
aoqi@0:                 databuf.appendByte((byte)i);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0: /**********************************************************************
aoqi@0:  * Writing Objects
aoqi@0:  **********************************************************************/
aoqi@0: 
aoqi@0:     /** Enter an inner class into the `innerClasses' set/queue.
aoqi@0:      */
aoqi@0:     void enterInner(ClassSymbol c) {
aoqi@0:         if (c.type.isCompound()) {
aoqi@0:             throw new AssertionError("Unexpected intersection type: " + c.type);
aoqi@0:         }
aoqi@0:         try {
aoqi@0:             c.complete();
aoqi@0:         } catch (CompletionFailure ex) {
aoqi@0:             System.err.println("error: " + c + ": " + ex.getMessage());
aoqi@0:             throw ex;
aoqi@0:         }
aoqi@0:         if (!c.type.hasTag(CLASS)) return; // arrays
aoqi@0:         if (pool != null && // pool might be null if called from xClassName
aoqi@0:             c.owner.enclClass() != null &&
aoqi@0:             (innerClasses == null || !innerClasses.contains(c))) {
aoqi@0: //          log.errWriter.println("enter inner " + c);//DEBUG
aoqi@0:             enterInner(c.owner.enclClass());
aoqi@0:             pool.put(c);
aoqi@0:             if (c.name != names.empty)
aoqi@0:                 pool.put(c.name);
aoqi@0:             if (innerClasses == null) {
aoqi@0:                 innerClasses = new HashSet<ClassSymbol>();
aoqi@0:                 innerClassesQueue = new ListBuffer<ClassSymbol>();
aoqi@0:                 pool.put(names.InnerClasses);
aoqi@0:             }
aoqi@0:             innerClasses.add(c);
aoqi@0:             innerClassesQueue.append(c);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write "inner classes" attribute.
aoqi@0:      */
aoqi@0:     void writeInnerClasses() {
aoqi@0:         int alenIdx = writeAttr(names.InnerClasses);
aoqi@0:         databuf.appendChar(innerClassesQueue.length());
aoqi@0:         for (List<ClassSymbol> l = innerClassesQueue.toList();
aoqi@0:              l.nonEmpty();
aoqi@0:              l = l.tail) {
aoqi@0:             ClassSymbol inner = l.head;
jlahoda@2717:             inner.markAbstractIfNeeded(types);
aoqi@0:             char flags = (char) adjustFlags(inner.flags_field);
aoqi@0:             if ((flags & INTERFACE) != 0) flags |= ABSTRACT; // Interfaces are always ABSTRACT
aoqi@0:             if (inner.name.isEmpty()) flags &= ~FINAL; // Anonymous class: unset FINAL flag
aoqi@0:             flags &= ~STRICTFP; //inner classes should not have the strictfp flag set.
aoqi@0:             if (dumpInnerClassModifiers) {
aoqi@0:                 PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
aoqi@0:                 pw.println("INNERCLASS  " + inner.name);
aoqi@0:                 pw.println("---" + flagNames(flags));
aoqi@0:             }
aoqi@0:             databuf.appendChar(pool.get(inner));
aoqi@0:             databuf.appendChar(
aoqi@0:                 inner.owner.kind == TYP && !inner.name.isEmpty() ? pool.get(inner.owner) : 0);
aoqi@0:             databuf.appendChar(
aoqi@0:                 !inner.name.isEmpty() ? pool.get(inner.name) : 0);
aoqi@0:             databuf.appendChar(flags);
aoqi@0:         }
aoqi@0:         endAttr(alenIdx);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write "bootstrapMethods" attribute.
aoqi@0:      */
aoqi@0:     void writeBootstrapMethods() {
aoqi@0:         int alenIdx = writeAttr(names.BootstrapMethods);
aoqi@0:         databuf.appendChar(bootstrapMethods.size());
aoqi@0:         for (Map.Entry<DynamicMethod, MethodHandle> entry : bootstrapMethods.entrySet()) {
aoqi@0:             DynamicMethod dmeth = entry.getKey();
aoqi@0:             DynamicMethodSymbol dsym = (DynamicMethodSymbol)dmeth.baseSymbol();
aoqi@0:             //write BSM handle
aoqi@0:             databuf.appendChar(pool.get(entry.getValue()));
aoqi@0:             //write static args length
aoqi@0:             databuf.appendChar(dsym.staticArgs.length);
aoqi@0:             //write static args array
aoqi@0:             Object[] uniqueArgs = dmeth.uniqueStaticArgs;
aoqi@0:             for (Object o : uniqueArgs) {
aoqi@0:                 databuf.appendChar(pool.get(o));
aoqi@0:             }
aoqi@0:         }
aoqi@0:         endAttr(alenIdx);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write field symbol, entering all references into constant pool.
aoqi@0:      */
aoqi@0:     void writeField(VarSymbol v) {
aoqi@0:         int flags = adjustFlags(v.flags());
aoqi@0:         databuf.appendChar(flags);
aoqi@0:         if (dumpFieldModifiers) {
aoqi@0:             PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
aoqi@0:             pw.println("FIELD  " + fieldName(v));
aoqi@0:             pw.println("---" + flagNames(v.flags()));
aoqi@0:         }
aoqi@0:         databuf.appendChar(pool.put(fieldName(v)));
aoqi@0:         databuf.appendChar(pool.put(typeSig(v.erasure(types))));
aoqi@0:         int acountIdx = beginAttrs();
aoqi@0:         int acount = 0;
aoqi@0:         if (v.getConstValue() != null) {
aoqi@0:             int alenIdx = writeAttr(names.ConstantValue);
aoqi@0:             databuf.appendChar(pool.put(v.getConstValue()));
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         acount += writeMemberAttrs(v);
aoqi@0:         endAttrs(acountIdx, acount);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write method symbol, entering all references into constant pool.
aoqi@0:      */
aoqi@0:     void writeMethod(MethodSymbol m) {
aoqi@0:         int flags = adjustFlags(m.flags());
aoqi@0:         databuf.appendChar(flags);
aoqi@0:         if (dumpMethodModifiers) {
aoqi@0:             PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
aoqi@0:             pw.println("METHOD  " + fieldName(m));
aoqi@0:             pw.println("---" + flagNames(m.flags()));
aoqi@0:         }
aoqi@0:         databuf.appendChar(pool.put(fieldName(m)));
aoqi@0:         databuf.appendChar(pool.put(typeSig(m.externalType(types))));
aoqi@0:         int acountIdx = beginAttrs();
aoqi@0:         int acount = 0;
aoqi@0:         if (m.code != null) {
aoqi@0:             int alenIdx = writeAttr(names.Code);
aoqi@0:             writeCode(m.code);
aoqi@0:             m.code = null; // to conserve space
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         List<Type> thrown = m.erasure(types).getThrownTypes();
aoqi@0:         if (thrown.nonEmpty()) {
aoqi@0:             int alenIdx = writeAttr(names.Exceptions);
aoqi@0:             databuf.appendChar(thrown.length());
aoqi@0:             for (List<Type> l = thrown; l.nonEmpty(); l = l.tail)
aoqi@0:                 databuf.appendChar(pool.put(l.head.tsym));
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if (m.defaultValue != null) {
aoqi@0:             int alenIdx = writeAttr(names.AnnotationDefault);
aoqi@0:             m.defaultValue.accept(awriter);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0:         if (options.isSet(PARAMETERS))
aoqi@0:             acount += writeMethodParametersAttr(m);
aoqi@0:         acount += writeMemberAttrs(m);
aoqi@0:         acount += writeParameterAttrs(m);
aoqi@0:         endAttrs(acountIdx, acount);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write code attribute of method.
aoqi@0:      */
aoqi@0:     void writeCode(Code code) {
aoqi@0:         databuf.appendChar(code.max_stack);
aoqi@0:         databuf.appendChar(code.max_locals);
aoqi@0:         databuf.appendInt(code.cp);
aoqi@0:         databuf.appendBytes(code.code, 0, code.cp);
aoqi@0:         databuf.appendChar(code.catchInfo.length());
aoqi@0:         for (List<char[]> l = code.catchInfo.toList();
aoqi@0:              l.nonEmpty();
aoqi@0:              l = l.tail) {
aoqi@0:             for (int i = 0; i < l.head.length; i++)
aoqi@0:                 databuf.appendChar(l.head[i]);
aoqi@0:         }
aoqi@0:         int acountIdx = beginAttrs();
aoqi@0:         int acount = 0;
aoqi@0: 
aoqi@0:         if (code.lineInfo.nonEmpty()) {
aoqi@0:             int alenIdx = writeAttr(names.LineNumberTable);
aoqi@0:             databuf.appendChar(code.lineInfo.length());
aoqi@0:             for (List<char[]> l = code.lineInfo.reverse();
aoqi@0:                  l.nonEmpty();
aoqi@0:                  l = l.tail)
aoqi@0:                 for (int i = 0; i < l.head.length; i++)
aoqi@0:                     databuf.appendChar(l.head[i]);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (genCrt && (code.crt != null)) {
aoqi@0:             CRTable crt = code.crt;
aoqi@0:             int alenIdx = writeAttr(names.CharacterRangeTable);
aoqi@0:             int crtIdx = beginAttrs();
aoqi@0:             int crtEntries = crt.writeCRT(databuf, code.lineMap, log);
aoqi@0:             endAttrs(crtIdx, crtEntries);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         // counter for number of generic local variables
aoqi@0:         if (code.varDebugInfo && code.varBufferSize > 0) {
aoqi@0:             int nGenericVars = 0;
aoqi@0:             int alenIdx = writeAttr(names.LocalVariableTable);
aoqi@0:             databuf.appendChar(code.getLVTSize());
aoqi@0:             for (int i=0; i<code.varBufferSize; i++) {
aoqi@0:                 Code.LocalVar var = code.varBuffer[i];
aoqi@0: 
aoqi@0:                 for (Code.LocalVar.Range r: var.aliveRanges) {
aoqi@0:                     // write variable info
aoqi@0:                     Assert.check(r.start_pc >= 0
aoqi@0:                             && r.start_pc <= code.cp);
aoqi@0:                     databuf.appendChar(r.start_pc);
vromero@2709:                     Assert.check(r.length > 0
aoqi@0:                             && (r.start_pc + r.length) <= code.cp);
aoqi@0:                     databuf.appendChar(r.length);
aoqi@0:                     VarSymbol sym = var.sym;
aoqi@0:                     databuf.appendChar(pool.put(sym.name));
aoqi@0:                     Type vartype = sym.erasure(types);
aoqi@0:                     databuf.appendChar(pool.put(typeSig(vartype)));
aoqi@0:                     databuf.appendChar(var.reg);
aoqi@0:                     if (needsLocalVariableTypeEntry(var.sym.type)) {
aoqi@0:                         nGenericVars++;
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0: 
aoqi@0:             if (nGenericVars > 0) {
aoqi@0:                 alenIdx = writeAttr(names.LocalVariableTypeTable);
aoqi@0:                 databuf.appendChar(nGenericVars);
aoqi@0:                 int count = 0;
aoqi@0: 
aoqi@0:                 for (int i=0; i<code.varBufferSize; i++) {
aoqi@0:                     Code.LocalVar var = code.varBuffer[i];
aoqi@0:                     VarSymbol sym = var.sym;
aoqi@0:                     if (!needsLocalVariableTypeEntry(sym.type))
aoqi@0:                         continue;
aoqi@0:                     for (Code.LocalVar.Range r : var.aliveRanges) {
aoqi@0:                         // write variable info
aoqi@0:                         databuf.appendChar(r.start_pc);
aoqi@0:                         databuf.appendChar(r.length);
aoqi@0:                         databuf.appendChar(pool.put(sym.name));
aoqi@0:                         databuf.appendChar(pool.put(typeSig(sym.type)));
aoqi@0:                         databuf.appendChar(var.reg);
aoqi@0:                         count++;
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:                 Assert.check(count == nGenericVars);
aoqi@0:                 endAttr(alenIdx);
aoqi@0:                 acount++;
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (code.stackMapBufferSize > 0) {
aoqi@0:             if (debugstackmap) System.out.println("Stack map for " + code.meth);
aoqi@0:             int alenIdx = writeAttr(code.stackMap.getAttributeName(names));
aoqi@0:             writeStackMap(code);
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         acount += writeTypeAnnotations(code.meth.getRawTypeAttributes(), true);
aoqi@0: 
aoqi@0:         endAttrs(acountIdx, acount);
aoqi@0:     }
aoqi@0:     //where
aoqi@0:     private boolean needsLocalVariableTypeEntry(Type t) {
aoqi@0:         //a local variable needs a type-entry if its type T is generic
aoqi@0:         //(i.e. |T| != T) and if it's not an intersection type (not supported
aoqi@0:         //in signature attribute grammar)
aoqi@0:         return (!types.isSameType(t, types.erasure(t)) &&
aoqi@0:                 !t.isCompound());
aoqi@0:     }
aoqi@0: 
aoqi@0:     void writeStackMap(Code code) {
aoqi@0:         int nframes = code.stackMapBufferSize;
aoqi@0:         if (debugstackmap) System.out.println(" nframes = " + nframes);
aoqi@0:         databuf.appendChar(nframes);
aoqi@0: 
aoqi@0:         switch (code.stackMap) {
aoqi@0:         case CLDC:
aoqi@0:             for (int i=0; i<nframes; i++) {
aoqi@0:                 if (debugstackmap) System.out.print("  " + i + ":");
aoqi@0:                 Code.StackMapFrame frame = code.stackMapBuffer[i];
aoqi@0: 
aoqi@0:                 // output PC
aoqi@0:                 if (debugstackmap) System.out.print(" pc=" + frame.pc);
aoqi@0:                 databuf.appendChar(frame.pc);
aoqi@0: 
aoqi@0:                 // output locals
aoqi@0:                 int localCount = 0;
aoqi@0:                 for (int j=0; j<frame.locals.length;
aoqi@0:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.locals[j]))) {
aoqi@0:                     localCount++;
aoqi@0:                 }
aoqi@0:                 if (debugstackmap) System.out.print(" nlocals=" +
aoqi@0:                                                     localCount);
aoqi@0:                 databuf.appendChar(localCount);
aoqi@0:                 for (int j=0; j<frame.locals.length;
aoqi@0:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.locals[j]))) {
aoqi@0:                     if (debugstackmap) System.out.print(" local[" + j + "]=");
aoqi@0:                     writeStackMapType(frame.locals[j]);
aoqi@0:                 }
aoqi@0: 
aoqi@0:                 // output stack
aoqi@0:                 int stackCount = 0;
aoqi@0:                 for (int j=0; j<frame.stack.length;
aoqi@0:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.stack[j]))) {
aoqi@0:                     stackCount++;
aoqi@0:                 }
aoqi@0:                 if (debugstackmap) System.out.print(" nstack=" +
aoqi@0:                                                     stackCount);
aoqi@0:                 databuf.appendChar(stackCount);
aoqi@0:                 for (int j=0; j<frame.stack.length;
aoqi@0:                      j += (target.generateEmptyAfterBig() ? 1 : Code.width(frame.stack[j]))) {
aoqi@0:                     if (debugstackmap) System.out.print(" stack[" + j + "]=");
aoqi@0:                     writeStackMapType(frame.stack[j]);
aoqi@0:                 }
aoqi@0:                 if (debugstackmap) System.out.println();
aoqi@0:             }
aoqi@0:             break;
aoqi@0:         case JSR202: {
aoqi@0:             Assert.checkNull(code.stackMapBuffer);
aoqi@0:             for (int i=0; i<nframes; i++) {
aoqi@0:                 if (debugstackmap) System.out.print("  " + i + ":");
aoqi@0:                 StackMapTableFrame frame = code.stackMapTableBuffer[i];
aoqi@0:                 frame.write(this);
aoqi@0:                 if (debugstackmap) System.out.println();
aoqi@0:             }
aoqi@0:             break;
aoqi@0:         }
aoqi@0:         default:
aoqi@0:             throw new AssertionError("Unexpected stackmap format value");
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:         //where
aoqi@0:         void writeStackMapType(Type t) {
aoqi@0:             if (t == null) {
aoqi@0:                 if (debugstackmap) System.out.print("empty");
aoqi@0:                 databuf.appendByte(0);
aoqi@0:             }
aoqi@0:             else switch(t.getTag()) {
aoqi@0:             case BYTE:
aoqi@0:             case CHAR:
aoqi@0:             case SHORT:
aoqi@0:             case INT:
aoqi@0:             case BOOLEAN:
aoqi@0:                 if (debugstackmap) System.out.print("int");
aoqi@0:                 databuf.appendByte(1);
aoqi@0:                 break;
aoqi@0:             case FLOAT:
aoqi@0:                 if (debugstackmap) System.out.print("float");
aoqi@0:                 databuf.appendByte(2);
aoqi@0:                 break;
aoqi@0:             case DOUBLE:
aoqi@0:                 if (debugstackmap) System.out.print("double");
aoqi@0:                 databuf.appendByte(3);
aoqi@0:                 break;
aoqi@0:             case LONG:
aoqi@0:                 if (debugstackmap) System.out.print("long");
aoqi@0:                 databuf.appendByte(4);
aoqi@0:                 break;
aoqi@0:             case BOT: // null
aoqi@0:                 if (debugstackmap) System.out.print("null");
aoqi@0:                 databuf.appendByte(5);
aoqi@0:                 break;
aoqi@0:             case CLASS:
aoqi@0:             case ARRAY:
aoqi@0:                 if (debugstackmap) System.out.print("object(" + t + ")");
aoqi@0:                 databuf.appendByte(7);
aoqi@0:                 databuf.appendChar(pool.put(t));
aoqi@0:                 break;
aoqi@0:             case TYPEVAR:
aoqi@0:                 if (debugstackmap) System.out.print("object(" + types.erasure(t).tsym + ")");
aoqi@0:                 databuf.appendByte(7);
aoqi@0:                 databuf.appendChar(pool.put(types.erasure(t).tsym));
aoqi@0:                 break;
aoqi@0:             case UNINITIALIZED_THIS:
aoqi@0:                 if (debugstackmap) System.out.print("uninit_this");
aoqi@0:                 databuf.appendByte(6);
aoqi@0:                 break;
aoqi@0:             case UNINITIALIZED_OBJECT:
aoqi@0:                 { UninitializedType uninitType = (UninitializedType)t;
aoqi@0:                 databuf.appendByte(8);
aoqi@0:                 if (debugstackmap) System.out.print("uninit_object@" + uninitType.offset);
aoqi@0:                 databuf.appendChar(uninitType.offset);
aoqi@0:                 }
aoqi@0:                 break;
aoqi@0:             default:
aoqi@0:                 throw new AssertionError();
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:     /** An entry in the JSR202 StackMapTable */
aoqi@0:     abstract static class StackMapTableFrame {
aoqi@0:         abstract int getFrameType();
aoqi@0: 
aoqi@0:         void write(ClassWriter writer) {
aoqi@0:             int frameType = getFrameType();
aoqi@0:             writer.databuf.appendByte(frameType);
aoqi@0:             if (writer.debugstackmap) System.out.print(" frame_type=" + frameType);
aoqi@0:         }
aoqi@0: 
aoqi@0:         static class SameFrame extends StackMapTableFrame {
aoqi@0:             final int offsetDelta;
aoqi@0:             SameFrame(int offsetDelta) {
aoqi@0:                 this.offsetDelta = offsetDelta;
aoqi@0:             }
aoqi@0:             int getFrameType() {
aoqi@0:                 return (offsetDelta < SAME_FRAME_SIZE) ? offsetDelta : SAME_FRAME_EXTENDED;
aoqi@0:             }
aoqi@0:             @Override
aoqi@0:             void write(ClassWriter writer) {
aoqi@0:                 super.write(writer);
aoqi@0:                 if (getFrameType() == SAME_FRAME_EXTENDED) {
aoqi@0:                     writer.databuf.appendChar(offsetDelta);
aoqi@0:                     if (writer.debugstackmap){
aoqi@0:                         System.out.print(" offset_delta=" + offsetDelta);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         static class SameLocals1StackItemFrame extends StackMapTableFrame {
aoqi@0:             final int offsetDelta;
aoqi@0:             final Type stack;
aoqi@0:             SameLocals1StackItemFrame(int offsetDelta, Type stack) {
aoqi@0:                 this.offsetDelta = offsetDelta;
aoqi@0:                 this.stack = stack;
aoqi@0:             }
aoqi@0:             int getFrameType() {
aoqi@0:                 return (offsetDelta < SAME_FRAME_SIZE) ?
aoqi@0:                        (SAME_FRAME_SIZE + offsetDelta) :
aoqi@0:                        SAME_LOCALS_1_STACK_ITEM_EXTENDED;
aoqi@0:             }
aoqi@0:             @Override
aoqi@0:             void write(ClassWriter writer) {
aoqi@0:                 super.write(writer);
aoqi@0:                 if (getFrameType() == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {
aoqi@0:                     writer.databuf.appendChar(offsetDelta);
aoqi@0:                     if (writer.debugstackmap) {
aoqi@0:                         System.out.print(" offset_delta=" + offsetDelta);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:                 if (writer.debugstackmap) {
aoqi@0:                     System.out.print(" stack[" + 0 + "]=");
aoqi@0:                 }
aoqi@0:                 writer.writeStackMapType(stack);
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         static class ChopFrame extends StackMapTableFrame {
aoqi@0:             final int frameType;
aoqi@0:             final int offsetDelta;
aoqi@0:             ChopFrame(int frameType, int offsetDelta) {
aoqi@0:                 this.frameType = frameType;
aoqi@0:                 this.offsetDelta = offsetDelta;
aoqi@0:             }
aoqi@0:             int getFrameType() { return frameType; }
aoqi@0:             @Override
aoqi@0:             void write(ClassWriter writer) {
aoqi@0:                 super.write(writer);
aoqi@0:                 writer.databuf.appendChar(offsetDelta);
aoqi@0:                 if (writer.debugstackmap) {
aoqi@0:                     System.out.print(" offset_delta=" + offsetDelta);
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         static class AppendFrame extends StackMapTableFrame {
aoqi@0:             final int frameType;
aoqi@0:             final int offsetDelta;
aoqi@0:             final Type[] locals;
aoqi@0:             AppendFrame(int frameType, int offsetDelta, Type[] locals) {
aoqi@0:                 this.frameType = frameType;
aoqi@0:                 this.offsetDelta = offsetDelta;
aoqi@0:                 this.locals = locals;
aoqi@0:             }
aoqi@0:             int getFrameType() { return frameType; }
aoqi@0:             @Override
aoqi@0:             void write(ClassWriter writer) {
aoqi@0:                 super.write(writer);
aoqi@0:                 writer.databuf.appendChar(offsetDelta);
aoqi@0:                 if (writer.debugstackmap) {
aoqi@0:                     System.out.print(" offset_delta=" + offsetDelta);
aoqi@0:                 }
aoqi@0:                 for (int i=0; i<locals.length; i++) {
aoqi@0:                      if (writer.debugstackmap) System.out.print(" locals[" + i + "]=");
aoqi@0:                      writer.writeStackMapType(locals[i]);
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         static class FullFrame extends StackMapTableFrame {
aoqi@0:             final int offsetDelta;
aoqi@0:             final Type[] locals;
aoqi@0:             final Type[] stack;
aoqi@0:             FullFrame(int offsetDelta, Type[] locals, Type[] stack) {
aoqi@0:                 this.offsetDelta = offsetDelta;
aoqi@0:                 this.locals = locals;
aoqi@0:                 this.stack = stack;
aoqi@0:             }
aoqi@0:             int getFrameType() { return FULL_FRAME; }
aoqi@0:             @Override
aoqi@0:             void write(ClassWriter writer) {
aoqi@0:                 super.write(writer);
aoqi@0:                 writer.databuf.appendChar(offsetDelta);
aoqi@0:                 writer.databuf.appendChar(locals.length);
aoqi@0:                 if (writer.debugstackmap) {
aoqi@0:                     System.out.print(" offset_delta=" + offsetDelta);
aoqi@0:                     System.out.print(" nlocals=" + locals.length);
aoqi@0:                 }
aoqi@0:                 for (int i=0; i<locals.length; i++) {
aoqi@0:                     if (writer.debugstackmap) System.out.print(" locals[" + i + "]=");
aoqi@0:                     writer.writeStackMapType(locals[i]);
aoqi@0:                 }
aoqi@0: 
aoqi@0:                 writer.databuf.appendChar(stack.length);
aoqi@0:                 if (writer.debugstackmap) { System.out.print(" nstack=" + stack.length); }
aoqi@0:                 for (int i=0; i<stack.length; i++) {
aoqi@0:                     if (writer.debugstackmap) System.out.print(" stack[" + i + "]=");
aoqi@0:                     writer.writeStackMapType(stack[i]);
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:        /** Compare this frame with the previous frame and produce
aoqi@0:         *  an entry of compressed stack map frame. */
aoqi@0:         static StackMapTableFrame getInstance(Code.StackMapFrame this_frame,
aoqi@0:                                               int prev_pc,
aoqi@0:                                               Type[] prev_locals,
aoqi@0:                                               Types types) {
aoqi@0:             Type[] locals = this_frame.locals;
aoqi@0:             Type[] stack = this_frame.stack;
aoqi@0:             int offset_delta = this_frame.pc - prev_pc - 1;
aoqi@0:             if (stack.length == 1) {
aoqi@0:                 if (locals.length == prev_locals.length
aoqi@0:                     && compare(prev_locals, locals, types) == 0) {
aoqi@0:                     return new SameLocals1StackItemFrame(offset_delta, stack[0]);
aoqi@0:                 }
aoqi@0:             } else if (stack.length == 0) {
aoqi@0:                 int diff_length = compare(prev_locals, locals, types);
aoqi@0:                 if (diff_length == 0) {
aoqi@0:                     return new SameFrame(offset_delta);
aoqi@0:                 } else if (-MAX_LOCAL_LENGTH_DIFF < diff_length && diff_length < 0) {
aoqi@0:                     // APPEND
aoqi@0:                     Type[] local_diff = new Type[-diff_length];
aoqi@0:                     for (int i=prev_locals.length, j=0; i<locals.length; i++,j++) {
aoqi@0:                         local_diff[j] = locals[i];
aoqi@0:                     }
aoqi@0:                     return new AppendFrame(SAME_FRAME_EXTENDED - diff_length,
aoqi@0:                                            offset_delta,
aoqi@0:                                            local_diff);
aoqi@0:                 } else if (0 < diff_length && diff_length < MAX_LOCAL_LENGTH_DIFF) {
aoqi@0:                     // CHOP
aoqi@0:                     return new ChopFrame(SAME_FRAME_EXTENDED - diff_length,
aoqi@0:                                          offset_delta);
aoqi@0:                 }
aoqi@0:             }
aoqi@0:             // FULL_FRAME
aoqi@0:             return new FullFrame(offset_delta, locals, stack);
aoqi@0:         }
aoqi@0: 
aoqi@0:         static boolean isInt(Type t) {
aoqi@0:             return (t.getTag().isStrictSubRangeOf(INT)  || t.hasTag(BOOLEAN));
aoqi@0:         }
aoqi@0: 
aoqi@0:         static boolean isSameType(Type t1, Type t2, Types types) {
aoqi@0:             if (t1 == null) { return t2 == null; }
aoqi@0:             if (t2 == null) { return false; }
aoqi@0: 
aoqi@0:             if (isInt(t1) && isInt(t2)) { return true; }
aoqi@0: 
aoqi@0:             if (t1.hasTag(UNINITIALIZED_THIS)) {
aoqi@0:                 return t2.hasTag(UNINITIALIZED_THIS);
aoqi@0:             } else if (t1.hasTag(UNINITIALIZED_OBJECT)) {
aoqi@0:                 if (t2.hasTag(UNINITIALIZED_OBJECT)) {
aoqi@0:                     return ((UninitializedType)t1).offset == ((UninitializedType)t2).offset;
aoqi@0:                 } else {
aoqi@0:                     return false;
aoqi@0:                 }
aoqi@0:             } else if (t2.hasTag(UNINITIALIZED_THIS) || t2.hasTag(UNINITIALIZED_OBJECT)) {
aoqi@0:                 return false;
aoqi@0:             }
aoqi@0: 
aoqi@0:             return types.isSameType(t1, t2);
aoqi@0:         }
aoqi@0: 
aoqi@0:         static int compare(Type[] arr1, Type[] arr2, Types types) {
aoqi@0:             int diff_length = arr1.length - arr2.length;
aoqi@0:             if (diff_length > MAX_LOCAL_LENGTH_DIFF || diff_length < -MAX_LOCAL_LENGTH_DIFF) {
aoqi@0:                 return Integer.MAX_VALUE;
aoqi@0:             }
aoqi@0:             int len = (diff_length > 0) ? arr2.length : arr1.length;
aoqi@0:             for (int i=0; i<len; i++) {
aoqi@0:                 if (!isSameType(arr1[i], arr2[i], types)) {
aoqi@0:                     return Integer.MAX_VALUE;
aoqi@0:                 }
aoqi@0:             }
aoqi@0:             return diff_length;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     void writeFields(Scope.Entry e) {
aoqi@0:         // process them in reverse sibling order;
aoqi@0:         // i.e., process them in declaration order.
aoqi@0:         List<VarSymbol> vars = List.nil();
aoqi@0:         for (Scope.Entry i = e; i != null; i = i.sibling) {
aoqi@0:             if (i.sym.kind == VAR) vars = vars.prepend((VarSymbol)i.sym);
aoqi@0:         }
aoqi@0:         while (vars.nonEmpty()) {
aoqi@0:             writeField(vars.head);
aoqi@0:             vars = vars.tail;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     void writeMethods(Scope.Entry e) {
aoqi@0:         List<MethodSymbol> methods = List.nil();
aoqi@0:         for (Scope.Entry i = e; i != null; i = i.sibling) {
aoqi@0:             if (i.sym.kind == MTH && (i.sym.flags() & HYPOTHETICAL) == 0)
aoqi@0:                 methods = methods.prepend((MethodSymbol)i.sym);
aoqi@0:         }
aoqi@0:         while (methods.nonEmpty()) {
aoqi@0:             writeMethod(methods.head);
aoqi@0:             methods = methods.tail;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Emit a class file for a given class.
aoqi@0:      *  @param c      The class from which a class file is generated.
aoqi@0:      */
aoqi@0:     public JavaFileObject writeClass(ClassSymbol c)
aoqi@0:         throws IOException, PoolOverflow, StringOverflow
aoqi@0:     {
aoqi@0:         JavaFileObject outFile
aoqi@0:             = fileManager.getJavaFileForOutput(CLASS_OUTPUT,
aoqi@0:                                                c.flatname.toString(),
aoqi@0:                                                JavaFileObject.Kind.CLASS,
aoqi@0:                                                c.sourcefile);
aoqi@0:         OutputStream out = outFile.openOutputStream();
aoqi@0:         try {
aoqi@0:             writeClassFile(out, c);
aoqi@0:             if (verbose)
aoqi@0:                 log.printVerbose("wrote.file", outFile);
aoqi@0:             out.close();
aoqi@0:             out = null;
aoqi@0:         } finally {
aoqi@0:             if (out != null) {
aoqi@0:                 // if we are propagating an exception, delete the file
aoqi@0:                 out.close();
aoqi@0:                 outFile.delete();
aoqi@0:                 outFile = null;
aoqi@0:             }
aoqi@0:         }
aoqi@0:         return outFile; // may be null if write failed
aoqi@0:     }
aoqi@0: 
aoqi@0:     /** Write class `c' to outstream `out'.
aoqi@0:      */
aoqi@0:     public void writeClassFile(OutputStream out, ClassSymbol c)
aoqi@0:         throws IOException, PoolOverflow, StringOverflow {
aoqi@0:         Assert.check((c.flags() & COMPOUND) == 0);
aoqi@0:         databuf.reset();
aoqi@0:         poolbuf.reset();
aoqi@0:         signatureGen.reset();
aoqi@0:         pool = c.pool;
aoqi@0:         innerClasses = null;
aoqi@0:         innerClassesQueue = null;
aoqi@0:         bootstrapMethods = new LinkedHashMap<DynamicMethod, MethodHandle>();
aoqi@0: 
aoqi@0:         Type supertype = types.supertype(c.type);
aoqi@0:         List<Type> interfaces = types.interfaces(c.type);
aoqi@0:         List<Type> typarams = c.type.getTypeArguments();
aoqi@0: 
aoqi@0:         int flags = adjustFlags(c.flags() & ~DEFAULT);
aoqi@0:         if ((flags & PROTECTED) != 0) flags |= PUBLIC;
aoqi@0:         flags = flags & ClassFlags & ~STRICTFP;
aoqi@0:         if ((flags & INTERFACE) == 0) flags |= ACC_SUPER;
aoqi@0:         if (c.isInner() && c.name.isEmpty()) flags &= ~FINAL;
aoqi@0:         if (dumpClassModifiers) {
aoqi@0:             PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
aoqi@0:             pw.println();
aoqi@0:             pw.println("CLASSFILE  " + c.getQualifiedName());
aoqi@0:             pw.println("---" + flagNames(flags));
aoqi@0:         }
aoqi@0:         databuf.appendChar(flags);
aoqi@0: 
aoqi@0:         databuf.appendChar(pool.put(c));
aoqi@0:         databuf.appendChar(supertype.hasTag(CLASS) ? pool.put(supertype.tsym) : 0);
aoqi@0:         databuf.appendChar(interfaces.length());
aoqi@0:         for (List<Type> l = interfaces; l.nonEmpty(); l = l.tail)
aoqi@0:             databuf.appendChar(pool.put(l.head.tsym));
aoqi@0:         int fieldsCount = 0;
aoqi@0:         int methodsCount = 0;
aoqi@0:         for (Scope.Entry e = c.members().elems; e != null; e = e.sibling) {
aoqi@0:             switch (e.sym.kind) {
aoqi@0:             case VAR: fieldsCount++; break;
aoqi@0:             case MTH: if ((e.sym.flags() & HYPOTHETICAL) == 0) methodsCount++;
aoqi@0:                       break;
aoqi@0:             case TYP: enterInner((ClassSymbol)e.sym); break;
aoqi@0:             default : Assert.error();
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (c.trans_local != null) {
aoqi@0:             for (ClassSymbol local : c.trans_local) {
aoqi@0:                 enterInner(local);
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         databuf.appendChar(fieldsCount);
aoqi@0:         writeFields(c.members().elems);
aoqi@0:         databuf.appendChar(methodsCount);
aoqi@0:         writeMethods(c.members().elems);
aoqi@0: 
aoqi@0:         int acountIdx = beginAttrs();
aoqi@0:         int acount = 0;
aoqi@0: 
aoqi@0:         boolean sigReq =
aoqi@0:             typarams.length() != 0 || supertype.allparams().length() != 0;
aoqi@0:         for (List<Type> l = interfaces; !sigReq && l.nonEmpty(); l = l.tail)
aoqi@0:             sigReq = l.head.allparams().length() != 0;
aoqi@0:         if (sigReq) {
aoqi@0:             Assert.check(source.allowGenerics());
aoqi@0:             int alenIdx = writeAttr(names.Signature);
aoqi@0:             if (typarams.length() != 0) signatureGen.assembleParamsSig(typarams);
aoqi@0:             signatureGen.assembleSig(supertype);
aoqi@0:             for (List<Type> l = interfaces; l.nonEmpty(); l = l.tail)
aoqi@0:                 signatureGen.assembleSig(l.head);
aoqi@0:             databuf.appendChar(pool.put(signatureGen.toName()));
aoqi@0:             signatureGen.reset();
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (c.sourcefile != null && emitSourceFile) {
aoqi@0:             int alenIdx = writeAttr(names.SourceFile);
aoqi@0:             // WHM 6/29/1999: Strip file path prefix.  We do it here at
aoqi@0:             // the last possible moment because the sourcefile may be used
aoqi@0:             // elsewhere in error diagnostics. Fixes 4241573.
aoqi@0:             //databuf.appendChar(c.pool.put(c.sourcefile));
aoqi@0:             String simpleName = BaseFileObject.getSimpleName(c.sourcefile);
aoqi@0:             databuf.appendChar(c.pool.put(names.fromString(simpleName)));
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (genCrt) {
aoqi@0:             // Append SourceID attribute
aoqi@0:             int alenIdx = writeAttr(names.SourceID);
aoqi@0:             databuf.appendChar(c.pool.put(names.fromString(Long.toString(getLastModified(c.sourcefile)))));
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:             // Append CompilationID attribute
aoqi@0:             alenIdx = writeAttr(names.CompilationID);
aoqi@0:             databuf.appendChar(c.pool.put(names.fromString(Long.toString(System.currentTimeMillis()))));
aoqi@0:             endAttr(alenIdx);
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         acount += writeFlagAttrs(c.flags());
aoqi@0:         acount += writeJavaAnnotations(c.getRawAttributes());
aoqi@0:         acount += writeTypeAnnotations(c.getRawTypeAttributes(), false);
aoqi@0:         acount += writeEnclosingMethodAttribute(c);
aoqi@0:         acount += writeExtraClassAttributes(c);
aoqi@0: 
aoqi@0:         poolbuf.appendInt(JAVA_MAGIC);
aoqi@0:         poolbuf.appendChar(target.minorVersion);
aoqi@0:         poolbuf.appendChar(target.majorVersion);
aoqi@0: 
aoqi@0:         writePool(c.pool);
aoqi@0: 
aoqi@0:         if (innerClasses != null) {
aoqi@0:             writeInnerClasses();
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (!bootstrapMethods.isEmpty()) {
aoqi@0:             writeBootstrapMethods();
aoqi@0:             acount++;
aoqi@0:         }
aoqi@0: 
aoqi@0:         endAttrs(acountIdx, acount);
aoqi@0: 
aoqi@0:         poolbuf.appendBytes(databuf.elems, 0, databuf.length);
aoqi@0:         out.write(poolbuf.elems, 0, poolbuf.length);
aoqi@0: 
aoqi@0:         pool = c.pool = null; // to conserve space
aoqi@0:      }
aoqi@0: 
aoqi@0:     /**Allows subclasses to write additional class attributes
aoqi@0:      *
aoqi@0:      * @return the number of attributes written
aoqi@0:      */
aoqi@0:     protected int writeExtraClassAttributes(ClassSymbol c) {
aoqi@0:         return 0;
aoqi@0:     }
aoqi@0: 
aoqi@0:     int adjustFlags(final long flags) {
aoqi@0:         int result = (int)flags;
aoqi@0:         if ((flags & SYNTHETIC) != 0  && !target.useSyntheticFlag())
aoqi@0:             result &= ~SYNTHETIC;
aoqi@0:         if ((flags & ENUM) != 0  && !target.useEnumFlag())
aoqi@0:             result &= ~ENUM;
aoqi@0:         if ((flags & ANNOTATION) != 0  && !target.useAnnotationFlag())
aoqi@0:             result &= ~ANNOTATION;
aoqi@0: 
aoqi@0:         if ((flags & BRIDGE) != 0  && target.useBridgeFlag())
aoqi@0:             result |= ACC_BRIDGE;
aoqi@0:         if ((flags & VARARGS) != 0  && target.useVarargsFlag())
aoqi@0:             result |= ACC_VARARGS;
aoqi@0:         if ((flags & DEFAULT) != 0)
aoqi@0:             result &= ~ABSTRACT;
aoqi@0:         return result;
aoqi@0:     }
aoqi@0: 
aoqi@0:     long getLastModified(FileObject filename) {
aoqi@0:         long mod = 0;
aoqi@0:         try {
aoqi@0:             mod = filename.getLastModified();
aoqi@0:         } catch (SecurityException e) {
aoqi@0:             throw new AssertionError("CRT: couldn't get source file modification date: " + e.getMessage());
aoqi@0:         }
aoqi@0:         return mod;
aoqi@0:     }
aoqi@0: }