jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/Symtab.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Symtab.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Symtab.java

Sat, 01 Dec 2007 00:00:00 +0000

author: duke
date: Sat, 01 Dec 2007 00:00:00 +0000
changeset 1: 9a66ca7c79fa
child 86: 3437676858e3
permissions: -rw-r--r--

Initial load

 /*
  * Copyright 1999-2006 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
 package com.sun.tools.javac.code;
 import java.util.*;
 import com.sun.tools.javac.util.*;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.code.Symbol.*;
 import com.sun.tools.javac.code.Type.*;
 import com.sun.tools.javac.jvm.*;
 import static com.sun.tools.javac.jvm.ByteCodes.*;
 import static com.sun.tools.javac.code.Flags.*;
 /** A class that defines all predefined constants and operators
  *  as well as special classes such as java.lang.Object, which need
  *  to be known to the compiler. All symbols are held in instance
  *  fields. This makes it possible to work in multiple concurrent
  *  projects, which might use different class files for library classes.
  *
  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
  *  you write code that depends on this, you do so at your own risk.
  *  This code and its internal interfaces are subject to change or
  *  deletion without notice.</b>
  */
 public class Symtab {
     /** The context key for the symbol table. */
     protected static final Context.Key<Symtab> symtabKey =
         new Context.Key<Symtab>();
     /** Get the symbol table instance. */
     public static Symtab instance(Context context) {
         Symtab instance = context.get(symtabKey);
         if (instance == null)
             instance = new Symtab(context);
         return instance;
     }
     /** Builtin types.
      */
     public final Type byteType = new Type(TypeTags.BYTE, null);
     public final Type charType = new Type(TypeTags.CHAR, null);
     public final Type shortType = new Type(TypeTags.SHORT, null);
     public final Type intType = new Type(TypeTags.INT, null);
     public final Type longType = new Type(TypeTags.LONG, null);
     public final Type floatType = new Type(TypeTags.FLOAT, null);
     public final Type doubleType = new Type(TypeTags.DOUBLE, null);
     public final Type booleanType = new Type(TypeTags.BOOLEAN, null);
     public final Type botType = new BottomType();
     public final JCNoType voidType = new JCNoType(TypeTags.VOID);
     private final Name.Table names;
     private final ClassReader reader;
     /** A symbol for the root package.
      */
     public final PackageSymbol rootPackage;
     /** A symbol for the unnamed package.
      */
     public final PackageSymbol unnamedPackage;
     /** A symbol that stands for a missing symbol.
      */
     public final TypeSymbol noSymbol;
     /** The error symbol.
      */
     public final ClassSymbol errSymbol;
     /** An instance of the error type.
      */
     public final Type errType;
     /** A value for the unknown type. */
     public final Type unknownType;
     /** The builtin type of all arrays. */
     public final ClassSymbol arrayClass;
     public final MethodSymbol arrayCloneMethod;
     /** VGJ: The (singleton) type of all bound types. */
     public final ClassSymbol boundClass;
     /** The builtin type of all methods. */
     public final ClassSymbol methodClass;
     /** Predefined types.
      */
     public final Type objectType;
     public final Type classType;
     public final Type classLoaderType;
     public final Type stringType;
     public final Type stringBufferType;
     public final Type stringBuilderType;
     public final Type cloneableType;
     public final Type serializableType;
     public final Type throwableType;
     public final Type errorType;
     public final Type illegalArgumentExceptionType;
     public final Type exceptionType;
     public final Type runtimeExceptionType;
     public final Type classNotFoundExceptionType;
     public final Type noClassDefFoundErrorType;
     public final Type noSuchFieldErrorType;
     public final Type assertionErrorType;
     public final Type cloneNotSupportedExceptionType;
     public final Type annotationType;
     public final TypeSymbol enumSym;
     public final Type listType;
     public final Type collectionsType;
     public final Type comparableType;
     public final Type arraysType;
     public final Type iterableType;
     public final Type iteratorType;
     public final Type annotationTargetType;
     public final Type overrideType;
     public final Type retentionType;
     public final Type deprecatedType;
     public final Type suppressWarningsType;
     public final Type inheritedType;
     public final Type proprietaryType;
     /** The symbol representing the length field of an array.
      */
     public final VarSymbol lengthVar;
     /** The null check operator. */
     public final OperatorSymbol nullcheck;
     /** The symbol representing the final finalize method on enums */
     public final MethodSymbol enumFinalFinalize;
     /** The predefined type that belongs to a tag.
      */
     public final Type[] typeOfTag = new Type[TypeTags.TypeTagCount];
     /** The name of the class that belongs to a basix type tag.
      */
     public final Name[] boxedName = new Name[TypeTags.TypeTagCount];
     /** A hashtable containing the encountered top-level and member classes,
      *  indexed by flat names. The table does not contain local classes.
      *  It should be updated from the outside to reflect classes defined
      *  by compiled source files.
      */
     public final Map<Name, ClassSymbol> classes = new HashMap<Name, ClassSymbol>();
     /** A hashtable containing the encountered packages.
      *  the table should be updated from outside to reflect packages defined
      *  by compiled source files.
      */
     public final Map<Name, PackageSymbol> packages = new HashMap<Name, PackageSymbol>();
     public void initType(Type type, ClassSymbol c) {
         type.tsym = c;
         typeOfTag[type.tag] = type;
     }
     public void initType(Type type, String name) {
         initType(
             type,
             new ClassSymbol(
                 PUBLIC, names.fromString(name), type, rootPackage));
     }
     public void initType(Type type, String name, String bname) {
         initType(type, name);
         boxedName[type.tag] = names.fromString("java.lang." + bname);
     }
     /** The class symbol that owns all predefined symbols.
      */
     public final ClassSymbol predefClass;
     /** Enter a constant into symbol table.
      *  @param name   The constant's name.
      *  @param type   The constant's type.
      */
     private VarSymbol enterConstant(String name, Type type) {
         VarSymbol c = new VarSymbol(
             PUBLIC | STATIC | FINAL,
             names.fromString(name),
             type,
             predefClass);
         c.setData(type.constValue());
         predefClass.members().enter(c);
         return c;
     }
     /** Enter a binary operation into symbol table.
      *  @param name     The name of the operator.
      *  @param left     The type of the left operand.
      *  @param right    The type of the left operand.
      *  @param res      The operation's result type.
      *  @param opcode   The operation's bytecode instruction.
      */
     private void enterBinop(String name,
                             Type left, Type right, Type res,
                             int opcode) {
         predefClass.members().enter(
             new OperatorSymbol(
                 names.fromString(name),
                 new MethodType(List.of(left, right), res,
                                List.<Type>nil(), methodClass),
                 opcode,
                 predefClass));
     }
     /** Enter a binary operation, as above but with two opcodes,
      *  which get encoded as (opcode1 << ByteCodeTags.preShift) + opcode2.
      *  @param opcode1     First opcode.
      *  @param opcode2     Second opcode.
      */
     private void enterBinop(String name,
                             Type left, Type right, Type res,
                             int opcode1, int opcode2) {
         enterBinop(
             name, left, right, res, (opcode1 << ByteCodes.preShift) | opcode2);
     }
     /** Enter a unary operation into symbol table.
      *  @param name     The name of the operator.
      *  @param arg      The type of the operand.
      *  @param res      The operation's result type.
      *  @param opcode   The operation's bytecode instruction.
      */
     private OperatorSymbol enterUnop(String name,
                                      Type arg,
                                      Type res,
                                      int opcode) {
         OperatorSymbol sym =
             new OperatorSymbol(names.fromString(name),
                                new MethodType(List.of(arg),
                                               res,
                                               List.<Type>nil(),
                                               methodClass),
                                opcode,
                                predefClass);
         predefClass.members().enter(sym);
         return sym;
     }
     /** Enter a class into symbol table.
      *  @param    The name of the class.
      */
     private Type enterClass(String s) {
         return reader.enterClass(names.fromString(s)).type;
     }
     /** Constructor; enters all predefined identifiers and operators
      *  into symbol table.
      */
     protected Symtab(Context context) throws CompletionFailure {
         context.put(symtabKey, this);
         names = Name.Table.instance(context);
         // Create the unknown type
         unknownType = new Type(TypeTags.UNKNOWN, null);
         // create the basic builtin symbols
         rootPackage = new PackageSymbol(names.empty, null);
         final Messages messages = Messages.instance(context);
         unnamedPackage = new PackageSymbol(names.empty, rootPackage) {
                 public String toString() {
                     return messages.getLocalizedString("compiler.misc.unnamed.package");
                 }
             };
         noSymbol = new TypeSymbol(0, names.empty, Type.noType, rootPackage);
         noSymbol.kind = Kinds.NIL;
         // create the error symbols
         errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage);
         errType = new ErrorType(errSymbol);
         // initialize builtin types
         initType(byteType, "byte", "Byte");
         initType(shortType, "short", "Short");
         initType(charType, "char", "Character");
         initType(intType, "int", "Integer");
         initType(longType, "long", "Long");
         initType(floatType, "float", "Float");
         initType(doubleType, "double", "Double");
         initType(booleanType, "boolean", "Boolean");
         initType(voidType, "void", "Void");
         initType(botType, "<nulltype>");
         initType(errType, errSymbol);
         initType(unknownType, "<any?>");
         // the builtin class of all arrays
         arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol);
         // VGJ
         boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol);
         // the builtin class of all methods
         methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol);
         // Create class to hold all predefined constants and operations.
         predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage);
         Scope scope = new Scope(predefClass);
         predefClass.members_field = scope;
         // Enter symbols for basic types.
         scope.enter(byteType.tsym);
         scope.enter(shortType.tsym);
         scope.enter(charType.tsym);
         scope.enter(intType.tsym);
         scope.enter(longType.tsym);
         scope.enter(floatType.tsym);
         scope.enter(doubleType.tsym);
         scope.enter(booleanType.tsym);
         scope.enter(errType.tsym);
         classes.put(predefClass.fullname, predefClass);
         reader = ClassReader.instance(context);
         reader.init(this);
         // Enter predefined classes.
         objectType = enterClass("java.lang.Object");
         classType = enterClass("java.lang.Class");
         stringType = enterClass("java.lang.String");
         stringBufferType = enterClass("java.lang.StringBuffer");
         stringBuilderType = enterClass("java.lang.StringBuilder");
         cloneableType = enterClass("java.lang.Cloneable");
         throwableType = enterClass("java.lang.Throwable");
         serializableType = enterClass("java.io.Serializable");
         errorType = enterClass("java.lang.Error");
         illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException");
         exceptionType = enterClass("java.lang.Exception");
         runtimeExceptionType = enterClass("java.lang.RuntimeException");
         classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException");
         noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError");
         noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError");
         assertionErrorType = enterClass("java.lang.AssertionError");
         cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException");
         annotationType = enterClass("java.lang.annotation.Annotation");
         classLoaderType = enterClass("java.lang.ClassLoader");
         enumSym = reader.enterClass(names.java_lang_Enum);
         enumFinalFinalize =
             new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL,
                              names.finalize,
                              new MethodType(List.<Type>nil(), voidType,
                                             List.<Type>nil(), methodClass),
                              enumSym);
         listType = enterClass("java.util.List");
         collectionsType = enterClass("java.util.Collections");
         comparableType = enterClass("java.lang.Comparable");
         arraysType = enterClass("java.util.Arrays");
         iterableType = Target.instance(context).hasIterable()
             ? enterClass("java.lang.Iterable")
             : enterClass("java.util.Collection");
         iteratorType = enterClass("java.util.Iterator");
         annotationTargetType = enterClass("java.lang.annotation.Target");
         overrideType = enterClass("java.lang.Override");
         retentionType = enterClass("java.lang.annotation.Retention");
         deprecatedType = enterClass("java.lang.Deprecated");
         suppressWarningsType = enterClass("java.lang.SuppressWarnings");
         inheritedType = enterClass("java.lang.annotation.Inherited");
         // Enter a synthetic class that is used to mark Sun
         // proprietary classes in ct.sym.  This class does not have a
         // class file.
         ClassType proprietaryType = (ClassType)enterClass("sun.Proprietary+Annotation");
         this.proprietaryType = proprietaryType;
         ClassSymbol proprietarySymbol = (ClassSymbol)proprietaryType.tsym;
         proprietarySymbol.completer = null;
         proprietarySymbol.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE;
         proprietarySymbol.erasure_field = proprietaryType;
         proprietarySymbol.members_field = new Scope(proprietarySymbol);
         proprietaryType.typarams_field = List.nil();
         proprietaryType.allparams_field = List.nil();
         proprietaryType.supertype_field = annotationType;
         proprietaryType.interfaces_field = List.nil();
         // Enter a class for arrays.
         // The class implements java.lang.Cloneable and java.io.Serializable.
         // It has a final length field and a clone method.
         ClassType arrayClassType = (ClassType)arrayClass.type;
         arrayClassType.supertype_field = objectType;
         arrayClassType.interfaces_field = List.of(cloneableType, serializableType);
         arrayClass.members_field = new Scope(arrayClass);
         lengthVar = new VarSymbol(
             PUBLIC | FINAL,
             names.length,
             intType,
             arrayClass);
         arrayClass.members().enter(lengthVar);
         arrayCloneMethod = new MethodSymbol(
             PUBLIC,
             names.clone,
             new MethodType(List.<Type>nil(), objectType,
                            List.<Type>nil(), methodClass),
             arrayClass);
         arrayClass.members().enter(arrayCloneMethod);
         // Enter operators.
         enterUnop("+", doubleType, doubleType, nop);
         enterUnop("+", floatType, floatType, nop);
         enterUnop("+", longType, longType, nop);
         enterUnop("+", intType, intType, nop);
         enterUnop("-", doubleType, doubleType, dneg);
         enterUnop("-", floatType, floatType, fneg);
         enterUnop("-", longType, longType, lneg);
         enterUnop("-", intType, intType, ineg);
         enterUnop("~", longType, longType, lxor);
         enterUnop("~", intType, intType, ixor);
         enterUnop("++", doubleType, doubleType, dadd);
         enterUnop("++", floatType, floatType, fadd);
         enterUnop("++", longType, longType, ladd);
         enterUnop("++", intType, intType, iadd);
         enterUnop("++", charType, charType, iadd);
         enterUnop("++", shortType, shortType, iadd);
         enterUnop("++", byteType, byteType, iadd);
         enterUnop("--", doubleType, doubleType, dsub);
         enterUnop("--", floatType, floatType, fsub);
         enterUnop("--", longType, longType, lsub);
         enterUnop("--", intType, intType, isub);
         enterUnop("--", charType, charType, isub);
         enterUnop("--", shortType, shortType, isub);
         enterUnop("--", byteType, byteType, isub);
         enterUnop("!", booleanType, booleanType, bool_not);
         nullcheck = enterUnop("<*nullchk*>", objectType, objectType, nullchk);
         // string concatenation
         enterBinop("+", stringType, objectType, stringType, string_add);
         enterBinop("+", objectType, stringType, stringType, string_add);
         enterBinop("+", stringType, stringType, stringType, string_add);
         enterBinop("+", stringType, intType, stringType, string_add);
         enterBinop("+", stringType, longType, stringType, string_add);
         enterBinop("+", stringType, floatType, stringType, string_add);
         enterBinop("+", stringType, doubleType, stringType, string_add);
         enterBinop("+", stringType, booleanType, stringType, string_add);
         enterBinop("+", stringType, botType, stringType, string_add);
         enterBinop("+", intType, stringType, stringType, string_add);
         enterBinop("+", longType, stringType, stringType, string_add);
         enterBinop("+", floatType, stringType, stringType, string_add);
         enterBinop("+", doubleType, stringType, stringType, string_add);
         enterBinop("+", booleanType, stringType, stringType, string_add);
         enterBinop("+", botType, stringType, stringType, string_add);
         // these errors would otherwise be matched as string concatenation
         enterBinop("+", botType, botType, botType, error);
         enterBinop("+", botType, intType, botType, error);
         enterBinop("+", botType, longType, botType, error);
         enterBinop("+", botType, floatType, botType, error);
         enterBinop("+", botType, doubleType, botType, error);
         enterBinop("+", botType, booleanType, botType, error);
         enterBinop("+", botType, objectType, botType, error);
         enterBinop("+", intType, botType, botType, error);
         enterBinop("+", longType, botType, botType, error);
         enterBinop("+", floatType, botType, botType, error);
         enterBinop("+", doubleType, botType, botType, error);
         enterBinop("+", booleanType, botType, botType, error);
         enterBinop("+", objectType, botType, botType, error);
         enterBinop("+", doubleType, doubleType, doubleType, dadd);
         enterBinop("+", floatType, floatType, floatType, fadd);
         enterBinop("+", longType, longType, longType, ladd);
         enterBinop("+", intType, intType, intType, iadd);
         enterBinop("-", doubleType, doubleType, doubleType, dsub);
         enterBinop("-", floatType, floatType, floatType, fsub);
         enterBinop("-", longType, longType, longType, lsub);
         enterBinop("-", intType, intType, intType, isub);
         enterBinop("*", doubleType, doubleType, doubleType, dmul);
         enterBinop("*", floatType, floatType, floatType, fmul);
         enterBinop("*", longType, longType, longType, lmul);
         enterBinop("*", intType, intType, intType, imul);
         enterBinop("/", doubleType, doubleType, doubleType, ddiv);
         enterBinop("/", floatType, floatType, floatType, fdiv);
         enterBinop("/", longType, longType, longType, ldiv);
         enterBinop("/", intType, intType, intType, idiv);
         enterBinop("%", doubleType, doubleType, doubleType, dmod);
         enterBinop("%", floatType, floatType, floatType, fmod);
         enterBinop("%", longType, longType, longType, lmod);
         enterBinop("%", intType, intType, intType, imod);
         enterBinop("&", booleanType, booleanType, booleanType, iand);
         enterBinop("&", longType, longType, longType, land);
         enterBinop("&", intType, intType, intType, iand);
         enterBinop("|", booleanType, booleanType, booleanType, ior);
         enterBinop("|", longType, longType, longType, lor);
         enterBinop("|", intType, intType, intType, ior);
         enterBinop("^", booleanType, booleanType, booleanType, ixor);
         enterBinop("^", longType, longType, longType, lxor);
         enterBinop("^", intType, intType, intType, ixor);
         enterBinop("<<", longType, longType, longType, lshll);
         enterBinop("<<", intType, longType, intType, ishll);
         enterBinop("<<", longType, intType, longType, lshl);
         enterBinop("<<", intType, intType, intType, ishl);
         enterBinop(">>", longType, longType, longType, lshrl);
         enterBinop(">>", intType, longType, intType, ishrl);
         enterBinop(">>", longType, intType, longType, lshr);
         enterBinop(">>", intType, intType, intType, ishr);
         enterBinop(">>>", longType, longType, longType, lushrl);
         enterBinop(">>>", intType, longType, intType, iushrl);
         enterBinop(">>>", longType, intType, longType, lushr);
         enterBinop(">>>", intType, intType, intType, iushr);
         enterBinop("<", doubleType, doubleType, booleanType, dcmpg, iflt);
         enterBinop("<", floatType, floatType, booleanType, fcmpg, iflt);
         enterBinop("<", longType, longType, booleanType, lcmp, iflt);
         enterBinop("<", intType, intType, booleanType, if_icmplt);
         enterBinop(">", doubleType, doubleType, booleanType, dcmpl, ifgt);
         enterBinop(">", floatType, floatType, booleanType, fcmpl, ifgt);
         enterBinop(">", longType, longType, booleanType, lcmp, ifgt);
         enterBinop(">", intType, intType, booleanType, if_icmpgt);
         enterBinop("<=", doubleType, doubleType, booleanType, dcmpg, ifle);
         enterBinop("<=", floatType, floatType, booleanType, fcmpg, ifle);
         enterBinop("<=", longType, longType, booleanType, lcmp, ifle);
         enterBinop("<=", intType, intType, booleanType, if_icmple);
         enterBinop(">=", doubleType, doubleType, booleanType, dcmpl, ifge);
         enterBinop(">=", floatType, floatType, booleanType, fcmpl, ifge);
         enterBinop(">=", longType, longType, booleanType, lcmp, ifge);
         enterBinop(">=", intType, intType, booleanType, if_icmpge);
         enterBinop("==", objectType, objectType, booleanType, if_acmpeq);
         enterBinop("==", booleanType, booleanType, booleanType, if_icmpeq);
         enterBinop("==", doubleType, doubleType, booleanType, dcmpl, ifeq);
         enterBinop("==", floatType, floatType, booleanType, fcmpl, ifeq);
         enterBinop("==", longType, longType, booleanType, lcmp, ifeq);
         enterBinop("==", intType, intType, booleanType, if_icmpeq);
         enterBinop("!=", objectType, objectType, booleanType, if_acmpne);
         enterBinop("!=", booleanType, booleanType, booleanType, if_icmpne);
         enterBinop("!=", doubleType, doubleType, booleanType, dcmpl, ifne);
         enterBinop("!=", floatType, floatType, booleanType, fcmpl, ifne);
         enterBinop("!=", longType, longType, booleanType, lcmp, ifne);
         enterBinop("!=", intType, intType, booleanType, if_icmpne);
         enterBinop("&&", booleanType, booleanType, booleanType, bool_and);
         enterBinop("||", booleanType, booleanType, booleanType, bool_or);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/code/Symtab.java@9a66ca7c79fa (annotated)

src/share/classes/com/sun/tools/javac/code/Symtab.java