edu.mit.ai.psg.jevaES
Class JNName

java.lang.Object
  |
  +--edu.mit.ai.psg.jevaES.SimpleNode
        |
        +--edu.mit.ai.psg.jevaES.JevaNode
              |
              +--edu.mit.ai.psg.jevaES.ExpressionNode
                    |
                    +--edu.mit.ai.psg.jevaES.JNName

public class JNName

extends ExpressionNode

implements IExpressionStoreNode, JevaESParserConstants

Jeva parse node for names (including parameters, fields, and class names); A name x.y.z is parsed with nested names as (((x).y).z). Note: does not always denote an expression (may be type or package).

Author:

CarlManning, caroma@ai.mit.edu
Copyright (c) 1997, 1998, 1999 Massachusetts Institute of Technology

Field Summary

static int	AMBIGUOUS_EXPRESSION_NAME
static int	AMBIGUOUS_NAME
static int	ARRAY_FIELD_NAME
static int	FIELD_NAME
static int	PACKAGE_NAME
static int	SPECIAL_NAME_CLASS
static int	SPECIAL_NAME_SUPER
static int	SPECIAL_NAME_THIS
static int	TYPE_NAME
static int	VARIABLE_NAME

Fields inherited from class edu.mit.ai.psg.jevaES.SimpleNode

children, id, parent

Method Summary

protected Error	categorySetError(String newCategory)
protected Field	computeField(IEnv env)
boolean	computeIsConstant(IEnv env)
IPackage	computePackage(IEnv env)
IPackage	computeParentPackage(IEnv env)
Class	computeType(IEnv env)
protected Error	ErrorNotVariableOrField()
Object	eval(IEnv env)
IStore	evalToStore(IEnv env)
String	getFullNameAndCurrentCategory() for error reports
String	getFullPackageOrClassName(IEnv env)
String	getLastName(IEnv env)
int	getNameCategory(IEnv env)
String	getNameCategoryName()
protected Class	getNamedClass()
Class	getNamedClass(IEnv env)
protected Field	getNamedField()
protected IPackage	getNamedPackage()
boolean	isFinal(IEnv env) used to test whether assignable.
protected void	reclassifyName(IEnv env)
void	setNameCategoryToAmbiguousExpression() context requires an expression; can only narrow category, not widen.
void	setNameCategoryToArrayField()
void	setNameCategoryToClassLiteral(Class c)
void	setNameCategoryToField(Field f)
void	setNameCategoryToPackage(IPackage p)
void	setNameCategoryToSuper()
void	setNameCategoryToThis()
void	setNameCategoryToType(Class c)
void	setNameCategoryToVariable()

Methods inherited from class edu.mit.ai.psg.jevaES.ExpressionNode

getType, getValue, isConstant

Methods inherited from class edu.mit.ai.psg.jevaES.JevaNode

getBeginToken, getEndToken, print, print, printToken, printToString, printToString, setBeginToken, setEndToken

Methods inherited from class edu.mit.ai.psg.jevaES.SimpleNode

dump, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, toString, toString

Methods inherited from class java.lang.Object

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

Field Detail

AMBIGUOUS_NAME

public static final int AMBIGUOUS_NAME

AMBIGUOUS_EXPRESSION_NAME

public static final int AMBIGUOUS_EXPRESSION_NAME

VARIABLE_NAME

public static final int VARIABLE_NAME

FIELD_NAME

public static final int FIELD_NAME

ARRAY_FIELD_NAME

public static final int ARRAY_FIELD_NAME

TYPE_NAME

public static final int TYPE_NAME

PACKAGE_NAME

public static final int PACKAGE_NAME

SPECIAL_NAME_THIS

public static final int SPECIAL_NAME_THIS

SPECIAL_NAME_SUPER

public static final int SPECIAL_NAME_SUPER

SPECIAL_NAME_CLASS

public static final int SPECIAL_NAME_CLASS

Method Detail

setNameCategoryToAmbiguousExpression

public void setNameCategoryToAmbiguousExpression()

context requires an expression; can only narrow category, not widen.

setNameCategoryToVariable

public void setNameCategoryToVariable()

setNameCategoryToField

public void setNameCategoryToField(Field f)

setNameCategoryToArrayField

public void setNameCategoryToArrayField()

setNameCategoryToType

public void setNameCategoryToType(Class c)

setNameCategoryToPackage

public void setNameCategoryToPackage(IPackage p)

setNameCategoryToThis

public void setNameCategoryToThis()

setNameCategoryToSuper

public void setNameCategoryToSuper()

setNameCategoryToClassLiteral

public void setNameCategoryToClassLiteral(Class c)

getNameCategory

public int getNameCategory(IEnv env)
                    throws VerifyingException

categorySetError

protected Error categorySetError(String newCategory)

getFullPackageOrClassName

public String getFullPackageOrClassName(IEnv env)
                                 throws VerifyingException

getLastName

public String getLastName(IEnv env)
                   throws VerifyingException

getNamedClass

public Class getNamedClass(IEnv env)
                    throws VerifyingException

getNamedClass

protected Class getNamedClass()

getNamedField

protected Field getNamedField()

getNamedPackage

protected IPackage getNamedPackage()

computeType

public Class computeType(IEnv env)
                  throws VerifyingException

Overrides:

computeType in class ExpressionNode

computeIsConstant

public boolean computeIsConstant(IEnv env)
                          throws VerifyingException

Overrides:

computeIsConstant in class ExpressionNode

ErrorNotVariableOrField

protected Error ErrorNotVariableOrField()

isFinal

public boolean isFinal(IEnv env)
                throws VerifyingException

used to test whether assignable. A name can be final but not constant if it is a final field f of a non-constant expression (expr).f

eval

public Object eval(IEnv env)
            throws ThrowException

Overrides:

eval in class ExpressionNode

evalToStore

public IStore evalToStore(IEnv env)
                   throws ThrowException

Specified by:

evalToStore in interface IExpressionStoreNode

reclassifyName

protected void reclassifyName(IEnv env)
                       throws VerifyingException

computeField

protected Field computeField(IEnv env)
                      throws VerifyingException

computePackage

public IPackage computePackage(IEnv env)
                        throws VerifyingException

computeParentPackage

public IPackage computeParentPackage(IEnv env)
                              throws VerifyingException

getFullNameAndCurrentCategory

public String getFullNameAndCurrentCategory()

for error reports

getNameCategoryName

public String getNameCategoryName()