org.ballerinalang.model.types

Class BType

java.lang.Object

org.ballerinalang.model.types.BType

All Implemented Interfaces:

BLangSymbol

Direct Known Subclasses:

BAnyType, BArrayType, BBlobType, BConnectorType, BEnumType, BFiniteType, BFunctionType, BFutureType, BIteratorType, BJSONType, BMapType, BNullType, BServiceType, BStreamType, BStringType, BStructType, BTableType, BTupleType, BTypeDesc, BUnionType, BXMLAttributesType, BXMLType

public abstract class BType
extends Object
implements BLangSymbol

BType represents a type in Ballerina.

Ballerina has variables of various types. The type system includes built-in primitive or value types, a collection of built-in structured types, and arrays, record and iterator type constructors. All variables of primitive types are allocated on the stack while all non-primitive types are allocated on a heap using new.

Since:

0.8.0

Field Summary

Fields

Modifier and Type	Field and Description
protected String	pkgPath
protected String	typeName
protected Class<? extends BValue>	valueClass

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BType(String typeName, String pkgPath, Class<? extends BValue> valueClass)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
abstract <V extends BValue> V	getEmptyValue() Get the empty initialized value of this type.
String	getName()
String	getPackagePath()
abstract TypeSignature	getSig()
abstract int	getTag()
<V extends BValue> Class<V>	getValueClass()
abstract <V extends BValue> V	getZeroValue() Get the default value of the type.
int	hashCode()
boolean	isNative()
boolean	isPublic()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

typeName

protected String typeName

pkgPath

protected String pkgPath

valueClass

protected Class<? extends BValue> valueClass

Constructor Detail

BType

protected BType(String typeName,
                String pkgPath,
                Class<? extends BValue> valueClass)

Method Detail

getValueClass

public <V extends BValue> Class<V> getValueClass()

getZeroValue

public abstract <V extends BValue> V getZeroValue()

Get the default value of the type. This is the value of an uninitialized variable of this type. For value types, this is same as the value get from BType#getInitValue().

Type Parameters:

V - Type of the value

Returns:

Default value of the type

getEmptyValue

public abstract <V extends BValue> V getEmptyValue()

Get the empty initialized value of this type. For reference types, this is the value of a variable, when initialized with the empty initializer. For value types, this is same as the default value (value get from BType#getDefaultValue()).

Type Parameters:

V - Type of the value

Returns:

Init value of this type

getSig

public abstract TypeSignature getSig()

getTag

public abstract int getTag()

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getName

public String getName()

Specified by:

getName in interface BLangSymbol

getPackagePath

public String getPackagePath()

Specified by:

getPackagePath in interface BLangSymbol

isPublic

public boolean isPublic()

Specified by:

isPublic in interface BLangSymbol

isNative

public boolean isNative()

Specified by:

isNative in interface BLangSymbol