com.sun.tools.javac.code
Class Symtab

java.lang.Object
  com.sun.tools.javac.code.Symtab

public class Symtab
extends java.lang.Object

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.

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.

Field Summary

Type	annotationTargetType
Type	annotationType
Symbol.ClassSymbol	arrayClass The builtin type of all arrays.
Symbol.MethodSymbol	arrayCloneMethod
Type	arraysType
Type	assertionErrorType
Type	booleanType
Type	botType
Symbol.ClassSymbol	boundClass VGJ: The (singleton) type of all bound types.
Name[]	boxedName The name of the class that belongs to a basix type tag.
Type	byteType Builtin types.
Type	charType
java.util.Map<Name,Symbol.ClassSymbol>	classes A hashtable containing the encountered top-level and member classes, indexed by flat names.
Type	classLoaderType
Type	classNotFoundExceptionType
Type	classType
Type	cloneableType
Type	cloneNotSupportedExceptionType
Type	codeType
Type	collectionsType
Type	comparableType
Type	cspMspTreeType
Type	deprecatedType
Type	doubleType
Symbol.MethodSymbol	enumFinalFinalize The symbol representing the final finalize method on enums
Symbol.TypeSymbol	enumSym
Type	errorType
Symbol.ClassSymbol	errSymbol The error symbol.
Type	errType A value for the errType, with a originalType of noType
Type	exceptionType
Type	floatType
Type	illegalArgumentExceptionType
Type	inheritedType
Type	internalMspTreeType
Type	intType
Type	iterableType
Type	iteratorType
Type	javaLangVoidType
Symbol.VarSymbol	lengthVar The symbol representing the length field of an array.
Type	listType
Type	longType
Symbol.ClassSymbol	methodClass The builtin type of all methods.
Type	mspTreeCodeType
Type	mspTreeType
private Names	names
Type	noClassDefFoundErrorType
Type	noSuchFieldErrorType
Symbol.TypeSymbol	noSymbol A symbol that stands for a missing symbol.
Symbol.OperatorSymbol	nullcheck The null check operator.
Type	objectType Predefined types.
Type	overrideType
java.util.Map<Name,Symbol.PackageSymbol>	packages A hashtable containing the encountered packages.
Symbol.ClassSymbol	predefClass The class symbol that owns all predefined symbols.
Type	proprietaryType
private ClassReader	reader
Type	retentionType
Symbol.PackageSymbol	rootPackage A symbol for the root package.
Type	runtimeExceptionType
Type	safeCodeType
Type	safeMspTreeCodeType
Type	serializableType
Type	shortType
Type	stringBufferType
Type	stringBuilderType
Type	stringCodeType
Type	stringMspTreeType
Type	stringType
Type	suppressWarningsType
protected static Context.Key<Symtab>	symtabKey The context key for the symbol table.
Type	systemType
private Target	target
Type	throwableType
Type[]	typeOfTag The predefined type that belongs to a tag.
Type	unknownType A value for the unknown type.
Symbol.PackageSymbol	unnamedPackage A symbol for the unnamed package.
Type.JCNoType	voidType

Constructor Summary

protected

Symtab(Context context) Constructor; enters all predefined identifiers and operators into symbol table.

Method Summary

private void	enterBinop(java.lang.String name, Type left, Type right, Type res, int opcode) Enter a binary operation into symbol table.
private void	enterBinop(java.lang.String name, Type left, Type right, Type res, int opcode1, int opcode2) Enter a binary operation, as above but with two opcodes, which get encoded as (opcode1 << ByteCodeTags.preShift) + opcode2.
private Type	enterClass(java.lang.String s) Enter a class into symbol table.
private Symbol.VarSymbol	enterConstant(java.lang.String name, Type type) Enter a constant into symbol table.
private Symbol.OperatorSymbol	enterUnop(java.lang.String name, Type arg, Type res, int opcode) Enter a unary operation into symbol table.
void	initType(Type type, java.lang.String name)
void	initType(Type type, java.lang.String name, java.lang.String bname)
void	initType(Type type, Symbol.ClassSymbol c)
static Symtab	instance(Context context) Get the symbol table instance.
void	synthesizeBoxTypeIfMissing(Type type)
void	synthesizeEmptyInterfaceIfMissing(Type type)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

symtabKey

protected static final Context.Key<Symtab> symtabKey

The context key for the symbol table.

byteType

public final Type byteType

Builtin types.

charType

public final Type charType

shortType

public final Type shortType

intType

public final Type intType

longType

public final Type longType

floatType

public final Type floatType

doubleType

public final Type doubleType

booleanType

public final Type booleanType

botType

public final Type botType

voidType

public final Type.JCNoType voidType

names

private final Names names

reader

private final ClassReader reader

target

private final Target target

rootPackage

public final Symbol.PackageSymbol rootPackage

A symbol for the root package.

unnamedPackage

public final Symbol.PackageSymbol unnamedPackage

A symbol for the unnamed package.

noSymbol

public final Symbol.TypeSymbol noSymbol

A symbol that stands for a missing symbol.

errSymbol

public final Symbol.ClassSymbol errSymbol

The error symbol.

errType

public final Type errType

A value for the errType, with a originalType of noType

unknownType

public final Type unknownType

A value for the unknown type.

arrayClass

public final Symbol.ClassSymbol arrayClass

The builtin type of all arrays.

arrayCloneMethod

public final Symbol.MethodSymbol arrayCloneMethod

boundClass

public final Symbol.ClassSymbol boundClass

VGJ: The (singleton) type of all bound types.

methodClass

public final Symbol.ClassSymbol methodClass

The builtin type of all methods.

objectType

public final Type objectType

Predefined types.

classType

public final Type classType

classLoaderType

public final Type classLoaderType

stringType

public final Type stringType

stringBufferType

public final Type stringBufferType

stringBuilderType

public final Type stringBuilderType

cloneableType

public final Type cloneableType

serializableType

public final Type serializableType

throwableType

public final Type throwableType

errorType

public final Type errorType

illegalArgumentExceptionType

public final Type illegalArgumentExceptionType

exceptionType

public final Type exceptionType

runtimeExceptionType

public final Type runtimeExceptionType

classNotFoundExceptionType

public final Type classNotFoundExceptionType

noClassDefFoundErrorType

public final Type noClassDefFoundErrorType

noSuchFieldErrorType

public final Type noSuchFieldErrorType

assertionErrorType

public final Type assertionErrorType

cloneNotSupportedExceptionType

public final Type cloneNotSupportedExceptionType

annotationType

public final Type annotationType

enumSym

public final Symbol.TypeSymbol enumSym

listType

public final Type listType

collectionsType

public final Type collectionsType

comparableType

public final Type comparableType

arraysType

public final Type arraysType

iterableType

public final Type iterableType

iteratorType

public final Type iteratorType

annotationTargetType

public final Type annotationTargetType

overrideType

public final Type overrideType

retentionType

public final Type retentionType

deprecatedType

public final Type deprecatedType

suppressWarningsType

public final Type suppressWarningsType

inheritedType

public final Type inheritedType

proprietaryType

public final Type proprietaryType

systemType

public final Type systemType

stringCodeType

public final Type stringCodeType

mspTreeCodeType

public final Type mspTreeCodeType

safeMspTreeCodeType

public final Type safeMspTreeCodeType

mspTreeType

public final Type mspTreeType

stringMspTreeType

public final Type stringMspTreeType

internalMspTreeType

public final Type internalMspTreeType

cspMspTreeType

public final Type cspMspTreeType

codeType

public final Type codeType

safeCodeType

public final Type safeCodeType

javaLangVoidType

public final Type javaLangVoidType

lengthVar

public final Symbol.VarSymbol lengthVar

The symbol representing the length field of an array.

nullcheck

public final Symbol.OperatorSymbol nullcheck

The null check operator.

enumFinalFinalize

public final Symbol.MethodSymbol enumFinalFinalize

The symbol representing the final finalize method on enums

typeOfTag

public final Type[] typeOfTag

The predefined type that belongs to a tag.

boxedName

public final Name[] boxedName

The name of the class that belongs to a basix type tag.

classes

public final java.util.Map<Name,Symbol.ClassSymbol> classes

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.

packages

public final java.util.Map<Name,Symbol.PackageSymbol> packages

A hashtable containing the encountered packages. the table should be updated from outside to reflect packages defined by compiled source files.

predefClass

public final Symbol.ClassSymbol predefClass

The class symbol that owns all predefined symbols.

Constructor Detail

Symtab

protected Symtab(Context context)
          throws Symbol.CompletionFailure

Constructor; enters all predefined identifiers and operators into symbol table.

Throws:

Symbol.CompletionFailure

Method Detail

instance

public static Symtab instance(Context context)

Get the symbol table instance.

initType

public void initType(Type type,
                     Symbol.ClassSymbol c)

initType

public void initType(Type type,
                     java.lang.String name)

initType

public void initType(Type type,
                     java.lang.String name,
                     java.lang.String bname)

enterConstant

private Symbol.VarSymbol enterConstant(java.lang.String name,
                                       Type type)

Enter a constant into symbol table.

Parameters:

name - The constant's name.

type - The constant's type.

enterBinop

private void enterBinop(java.lang.String name,
                        Type left,
                        Type right,
                        Type res,
                        int opcode)

Enter a binary operation into symbol table.

Parameters:

name - The name of the operator.

left - The type of the left operand.

right - The type of the left operand.

res - The operation's result type.

opcode - The operation's bytecode instruction.

enterBinop

private void enterBinop(java.lang.String name,
                        Type left,
                        Type right,
                        Type res,
                        int opcode1,
                        int opcode2)

Enter a binary operation, as above but with two opcodes, which get encoded as (opcode1 << ByteCodeTags.preShift) + opcode2.

Parameters:

opcode1 - First opcode.

opcode2 - Second opcode.

enterUnop

private Symbol.OperatorSymbol enterUnop(java.lang.String name,
                                        Type arg,
                                        Type res,
                                        int opcode)

Enter a unary operation into symbol table.

Parameters:

name - The name of the operator.

arg - The type of the operand.

res - The operation's result type.

opcode - The operation's bytecode instruction.

enterClass

private Type enterClass(java.lang.String s)

Enter a class into symbol table.

Parameters:

The - name of the class.

synthesizeEmptyInterfaceIfMissing

public void synthesizeEmptyInterfaceIfMissing(Type type)

synthesizeBoxTypeIfMissing

public void synthesizeBoxTypeIfMissing(Type type)