polyglot.types
Class VarInstance_c

java.lang.Object
  polyglot.types.TypeObject_c
      polyglot.types.VarInstance_c

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Declaration, TypeObject, VarInstance, Copy

Direct Known Subclasses:

FieldInstance_c, LocalInstance_c

public abstract class VarInstance_c
extends TypeObject_c
implements VarInstance

A VarInstance contains type information for a variable. It may be either a local or a field.

See Also:

Serialized Form

Field Summary

protected java.lang.Object	constantValue
protected boolean	constantValueSet
protected VarInstance	decl
protected Flags	flags
protected boolean	isConstant
protected java.lang.String	name
protected Type	type

Fields inherited from class polyglot.types.TypeObject_c

position, ts

Constructor Summary

protected	VarInstance_c() Used for deserializing types.
	VarInstance_c(TypeSystem ts, Position pos, Flags flags, Type type, java.lang.String name)

Method Summary

java.lang.Object	constantValue() The variable's constant value, or null.
boolean	constantValueSet() Whether the variable's constant value has been set yet.
Declaration	declaration() Get the original declaration.
boolean	equalsImpl(TypeObject o) Default implementation is pointer equality.
Flags	flags() The flags of the variable.
int	hashCode()
boolean	isCanonical() Return true if the type object contains no unknown/ambiguous types.
boolean	isConstant() Whether the variable has a constant value.
java.lang.String	name() The name of the variable.
void	setConstantValue(java.lang.Object constantValue) Destructive update of constant value.
void	setDeclaration(Declaration decl) Set the original declaration.
void	setFlags(Flags flags) Destructively set the flags of the variable.
void	setName(java.lang.String name)
void	setNotConstant() Mark the variable as not a compile time constant.
void	setType(Type type) Destructively set the type of the variable.
Type	type() The type of the variable.

Methods inherited from class polyglot.types.TypeObject_c

copy, equals, position, typeSystem

Methods inherited from class java.lang.Object

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

Field Detail

flags

protected Flags flags

type

protected Type type

name

protected java.lang.String name

constantValue

protected java.lang.Object constantValue

isConstant

protected boolean isConstant

constantValueSet

protected boolean constantValueSet

decl

protected VarInstance decl

Constructor Detail

VarInstance_c

protected VarInstance_c()

Used for deserializing types.

VarInstance_c

public VarInstance_c(TypeSystem ts,
                     Position pos,
                     Flags flags,
                     Type type,
                     java.lang.String name)

Method Detail

declaration

public Declaration declaration()

Description copied from interface: Declaration

Get the original declaration.

Specified by:

declaration in interface Declaration

setDeclaration

public void setDeclaration(Declaration decl)

Description copied from interface: Declaration

Set the original declaration.

Specified by:

setDeclaration in interface Declaration

constantValueSet

public boolean constantValueSet()

Description copied from interface: VarInstance

Whether the variable's constant value has been set yet.

Specified by:

constantValueSet in interface VarInstance

isConstant

public boolean isConstant()

Description copied from interface: VarInstance

Whether the variable has a constant value.

Specified by:

isConstant in interface VarInstance

constantValue

public java.lang.Object constantValue()

Description copied from interface: VarInstance

The variable's constant value, or null.

Specified by:

constantValue in interface VarInstance

flags

public Flags flags()

Description copied from interface: VarInstance

The flags of the variable.

Specified by:

flags in interface VarInstance

type

public Type type()

Description copied from interface: VarInstance

The type of the variable.

Specified by:

type in interface VarInstance

name

public java.lang.String name()

Description copied from interface: VarInstance

The name of the variable.

Specified by:

name in interface VarInstance

hashCode

public int hashCode()

Overrides:

hashCode in class TypeObject_c

equalsImpl

public boolean equalsImpl(TypeObject o)

Description copied from class: TypeObject_c

Default implementation is pointer equality.

Specified by:

equalsImpl in interface TypeObject

Overrides:

equalsImpl in class TypeObject_c

See Also:

TypeObject_c.equalsImpl(TypeObject), Object.hashCode()

isCanonical

public boolean isCanonical()

Description copied from interface: TypeObject

Return true if the type object contains no unknown/ambiguous types.

Specified by:

isCanonical in interface TypeObject

setType

public void setType(Type type)

Description copied from interface: VarInstance

Destructively set the type of the variable. This method should be deprecated.

Specified by:

setType in interface VarInstance

setFlags

public void setFlags(Flags flags)

Description copied from interface: VarInstance

Destructively set the flags of the variable.

Specified by:

setFlags in interface VarInstance

setConstantValue

public void setConstantValue(java.lang.Object constantValue)

Destructive update of constant value.

Specified by:

setConstantValue in interface VarInstance

Parameters:

constantValue - the constant value. Should be an instance of String, Boolean, Byte, Short, Character, Integer, Long, Float, Double, or null.

setNotConstant

public void setNotConstant()

Description copied from interface: VarInstance

Mark the variable as not a compile time constant.

Specified by:

setNotConstant in interface VarInstance

setName

public void setName(java.lang.String name)

Specified by:

setName in interface VarInstance

Parameters:

name - The name to set.