dk.brics.tajs.flowgraph.jsnodes

Class WritePropertyNode

java.lang.Object

dk.brics.tajs.flowgraph.AbstractNode

dk.brics.tajs.flowgraph.jsnodes.Node

dk.brics.tajs.flowgraph.jsnodes.WritePropertyNode

All Implemented Interfaces:

IPropertyNode

public class WritePropertyNode
extends Node
implements IPropertyNode

Write property node.

v_base[v_property] = v
or
v_base.property = v

Note that reading a property may overwrite the base register due to ToObject coercion.

Field Summary

Fields inherited from class dk.brics.tajs.flowgraph.AbstractNode

EXCEPTION_REG, FIRST_ORDINARY_REG, NO_VALUE, RETURN_REG

Constructor Summary

Constructors

Constructor and Description
WritePropertyNode(int base_reg, int property_reg, int value_reg, SourceLocation location) Constructs a new write property node with variable property name.
WritePropertyNode(int base_reg, String property_str, int value_reg, SourceLocation location) Constructs a new write property node with fixed property name.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canThrowExceptions() Returns true if this node may throw exceptions.
void	check(BasicBlock b) Perform a consistency check of this node.
int	getBaseRegister() Returns the base register.
int	getPropertyRegister() Returns the property register, or AbstractNode.NO_VALUE if not applicable.
String	getPropertyString() Returns the property string, or null if not fixed.
int	getValueRegister() Returns the value register.
boolean	isPropertyFixed() Returns true if the property is a fixed string.
void	setBaseRegister(int base_reg) Sets the base register.
void	setPropertyRegister(int property_reg) Set the property register.
void	setPropertyString(String property_str) Sets the property string.
void	setValueRegister(int value_reg) Sets the value register.
String	toString() Returns a string description of this node.
<ArgType> void	visitBy(NodeVisitor<ArgType> v, ArgType a) Visits this node with the given visitor.

Methods inherited from class dk.brics.tajs.flowgraph.jsnodes.Node

visitBy

Methods inherited from class dk.brics.tajs.flowgraph.AbstractNode

getBlock, getDuplicateOf, getIndex, getSourceLocation, isArtificial, isDead, isRegistersDone, setArtificial, setBlock, setDead, setDuplicateOf, setIndex, setRegistersDone

Methods inherited from class java.lang.Object

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

Constructor Detail

WritePropertyNode

public WritePropertyNode(int base_reg,
                 int property_reg,
                 int value_reg,
                 SourceLocation location)

Constructs a new write property node with variable property name.

Parameters:

base_reg - The register for the base value.

property_reg - The register for the property value.

value_reg - The register for the value to write.

location - The source location.

WritePropertyNode

public WritePropertyNode(int base_reg,
                 String property_str,
                 int value_reg,
                 SourceLocation location)

Constructs a new write property node with fixed property name.

Parameters:

base_reg - The register for the base value.

property_str - The property string.

value_reg - The register holding the value to write.

location - The source location.

Method Detail

canThrowExceptions

public boolean canThrowExceptions()

Description copied from class: AbstractNode

Returns true if this node may throw exceptions.

Specified by:

canThrowExceptions in class AbstractNode

check

public void check(BasicBlock b)

Description copied from class: AbstractNode

Perform a consistency check of this node. Default implementation does nothing.

Overrides:

check in class AbstractNode

Parameters:

b - basic block containing this node

getBaseRegister

public int getBaseRegister()

Description copied from interface: IPropertyNode

Returns the base register.

Specified by:

getBaseRegister in interface IPropertyNode

getPropertyRegister

public int getPropertyRegister()

Description copied from interface: IPropertyNode

Returns the property register, or AbstractNode.NO_VALUE if not applicable.

Specified by:

getPropertyRegister in interface IPropertyNode

getPropertyString

public String getPropertyString()

Description copied from interface: IPropertyNode

Returns the property string, or null if not fixed.

Specified by:

getPropertyString in interface IPropertyNode

getValueRegister

public int getValueRegister()

Returns the value register.

isPropertyFixed

public boolean isPropertyFixed()

Description copied from interface: IPropertyNode

Returns true if the property is a fixed string.

Specified by:

isPropertyFixed in interface IPropertyNode

setBaseRegister

public void setBaseRegister(int base_reg)

Description copied from interface: IPropertyNode

Sets the base register.

Specified by:

setBaseRegister in interface IPropertyNode

setPropertyRegister

public void setPropertyRegister(int property_reg)

Description copied from interface: IPropertyNode

Set the property register.

Specified by:

setPropertyRegister in interface IPropertyNode

setPropertyString

public void setPropertyString(String property_str)

Description copied from interface: IPropertyNode

Sets the property string.

Specified by:

setPropertyString in interface IPropertyNode

setValueRegister

public void setValueRegister(int value_reg)

Sets the value register.

toString

public String toString()

Description copied from class: AbstractNode

Returns a string description of this node.

Specified by:

toString in class AbstractNode

visitBy

public <ArgType> void visitBy(NodeVisitor<ArgType> v,
                     ArgType a)

Description copied from class: Node

Visits this node with the given visitor.

Specified by:

visitBy in class Node