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:
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;
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: *
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.
duke@1: */
duke@1: public class ClassWriter extends ClassFile {
duke@1: protected static final Context.Key classWriterKey =
duke@1: new Context.Key();
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 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 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 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@1755: acount += writeTypeAnnotations(sym.getRawTypeAttributes(), false);
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));
ksrini@1602: databuf.appendChar(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;
vromero@1792: if (m.params != null) {
vromero@1792: for (VarSymbol s : m.params) {
vromero@1792: for (Attribute.Compound a : s.getRawAttributes()) {
vromero@1792: switch (types.getRetention(a)) {
vromero@1792: case SOURCE: break;
vromero@1792: case CLASS: hasInvisible = true; break;
vromero@1792: case RUNTIME: hasVisible = true; break;
vromero@1792: default: ;// /* fail soft */ throw new AssertionError(vis);
vromero@1792: }
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 buf = new ListBuffer();
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 buf = new ListBuffer();
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 attrs) {
duke@1: if (attrs.isEmpty()) return 0;
duke@1: ListBuffer visibles = new ListBuffer();
duke@1: ListBuffer invisibles = new ListBuffer();
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@1755: int writeTypeAnnotations(List typeAnnos, boolean inCode) {
jjg@1521: if (typeAnnos.isEmpty()) return 0;
jjg@1521:
jjg@1521: ListBuffer visibles = ListBuffer.lb();
jjg@1521: ListBuffer invisibles = ListBuffer.lb();
jjg@1521:
jjg@1521: for (Attribute.TypeCompound tc : typeAnnos) {
jjg@1755: if (tc.hasUnknownPosition()) {
jjg@1755: boolean fixed = tc.tryFixPosition();
jjg@1755:
jjg@1755: // Could we fix it?
jjg@1755: if (!fixed) {
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@1755: PrintWriter pw = log.getWriter(Log.WriterKind.ERROR);
jjg@1755: pw.println("ClassWriter: Position UNKNOWN in type annotation: " + tc);
jjg@1521: continue;
jjg@1521: }
jjg@1521: }
jjg@1755:
jjg@1755: if (tc.position.type.isLocal() != inCode)
jjg@1755: continue;
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 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@1755: databuf.appendChar(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 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);
vromero@1698: if (c.name != names.empty)
vromero@1698: pool.put(c.name);
duke@1: if (innerClasses == null) {
duke@1: innerClasses = new HashSet();
duke@1: innerClassesQueue = new ListBuffer();
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 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
vromero@1801: flags &= ~STRICTFP; //inner classes should not have the strictfp flag set.
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 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 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 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 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 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= 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 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: }
jjg@1755:
jjg@1755: acount += writeTypeAnnotations(code.meth.getRawTypeAttributes(), true);
jjg@1755:
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 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 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 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) {
jjg@1755: // if we are propagating 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();
duke@1:
duke@1: Type supertype = types.supertype(c.type);
duke@1: List interfaces = types.interfaces(c.type);
duke@1: List 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 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 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 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@1755: acount += writeTypeAnnotations(c.getRawTypeAttributes(), false);
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: }