org.ballerinalang.model.expressions

Class AbstractExpression

java.lang.Object

org.ballerinalang.model.expressions.AbstractExpression

All Implemented Interfaces:

Expression, Node

Direct Known Subclasses:

SimpleVarRefExpr

public abstract class AbstractExpression
extends Object
implements Expression

All the expressions should extend AbstractExpression

Provides the common behaviour of expressions.

Since:

0.8.0

Field Summary

Fields

Modifier and Type	Field and Description
protected NodeLocation	location
protected boolean	multipleReturnsAvailable
protected int	offset
protected int	tempOffset
protected BType	type
protected WhiteSpaceDescriptor	whiteSpaceDescriptor

Constructor Summary

Constructors

Constructor and Description
AbstractExpression(NodeLocation location, WhiteSpaceDescriptor whiteSpaceDescriptor)

Method Summary

Modifier and Type	Method and Description
NodeLocation	getNodeLocation() Returns the location of this node.
int	getTempOffset() Get Temporary Location of the stack frame of the expression.
BType	getType()
WhiteSpaceDescriptor	getWhiteSpaceDescriptor() Get information about whitespace associated with this particular node in source file.
boolean	hasTemporaryValues()
boolean	isMultiReturnExpr()
void	setMultiReturnAvailable(boolean multiReturnsAvailable)
void	setOffset(int offset)
void	setTempOffset(int index) Set Temporary Location in stack frame for storing expression result.
void	setType(BType type)
void	setWhiteSpaceDescriptor(WhiteSpaceDescriptor whiteSpaceDescriptor)

Methods inherited from class java.lang.Object

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

Field Detail

location

protected NodeLocation location

whiteSpaceDescriptor

protected WhiteSpaceDescriptor whiteSpaceDescriptor

type

protected BType type

multipleReturnsAvailable

protected boolean multipleReturnsAvailable

offset

protected int offset

tempOffset

protected int tempOffset

Constructor Detail

AbstractExpression

public AbstractExpression(NodeLocation location,
                          WhiteSpaceDescriptor whiteSpaceDescriptor)

Method Detail

getType

public BType getType()

Specified by:

getType in interface Expression

setType

public void setType(BType type)

Specified by:

setType in interface Expression

setOffset

public void setOffset(int offset)

Specified by:

setOffset in interface Expression

isMultiReturnExpr

public boolean isMultiReturnExpr()

Specified by:

isMultiReturnExpr in interface Expression

setMultiReturnAvailable

public void setMultiReturnAvailable(boolean multiReturnsAvailable)

getNodeLocation

public NodeLocation getNodeLocation()

Description copied from interface: Node

Returns the location of this node.

NodeLocation includes the source filename and the line number.

Specified by:

getNodeLocation in interface Node

Returns:

location of this node

setWhiteSpaceDescriptor

public void setWhiteSpaceDescriptor(WhiteSpaceDescriptor whiteSpaceDescriptor)

getWhiteSpaceDescriptor

public WhiteSpaceDescriptor getWhiteSpaceDescriptor()

Description copied from interface: Node

Get information about whitespace associated with this particular node in source file.

Specified by:

getWhiteSpaceDescriptor in interface Node

Returns:

whitespace descriptor

getTempOffset

public int getTempOffset()

Description copied from interface: Expression

Get Temporary Location of the stack frame of the expression.

Specified by:

getTempOffset in interface Expression

Returns:

temporary offset in the stack frame.

setTempOffset

public void setTempOffset(int index)

Description copied from interface: Expression

Set Temporary Location in stack frame for storing expression result.

Specified by:

setTempOffset in interface Expression

Parameters:

index - calculated temporary offset.

hasTemporaryValues

public boolean hasTemporaryValues()

Specified by:

hasTemporaryValues in interface Expression