dk.brics.tajs.flowgraph.jsnodes

Class CallNode

java.lang.Object

dk.brics.tajs.flowgraph.AbstractNode

dk.brics.tajs.flowgraph.jsnodes.Node

dk.brics.tajs.flowgraph.jsnodes.LoadNode

dk.brics.tajs.flowgraph.jsnodes.CallNode

All Implemented Interfaces:

ICallNode

public class CallNode
extends LoadNode
implements ICallNode

Call/construct node.

v_result = [new] [v_base.] v_function(v₀,...,v_n)

Note that v_function represents the function value (not the property name), and v_base represents the base object (or AbstractNode.NO_VALUE if absent).

Must be the only node in its block. The block must have precisely one successor.

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
CallNode(boolean constructor, boolean arraylit, int result_reg, int base_reg, int function_reg, List<Integer> arg_regs, SourceLocation location) Constructs a new call/construct node.

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	getArgRegister(int i) Returns the given argument register.
int	getBaseRegister() Returns the base register.
int	getFunctionRegister() Returns the function register.
int	getNumberOfArgs() Returns the number of arguments.
boolean	isArrayLiteral() Returns true if this call node comes from an array literal.
boolean	isConstructorCall() Checks whether this is a constructor call or an ordinary call.
void	setArgRegister(int i, int var) Sets the i'th argument to the given argument register.
void	setBaseRegister(int base_var) Sets the base register.
void	setFunctionRegister(int function_reg) Sets the function 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.LoadNode

getResultRegister

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

Methods inherited from interface dk.brics.tajs.flowgraph.ICallNode

getResultRegister

Constructor Detail

CallNode

public CallNode(boolean constructor,
        boolean arraylit,
        int result_reg,
        int base_reg,
        int function_reg,
        List<Integer> arg_regs,
        SourceLocation location)

Constructs a new call/construct node.

Parameters:

constructor - Is this a constructor.

arraylit - Does this call node come from an array literal

result_reg - The register for the result.

base_reg - The base object register.

function_reg - The function register.

arg_regs - The argument registers as a list.

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

getArgRegister

public int getArgRegister(int i)

Returns the given argument register. Counts from 0.

getBaseRegister

public int getBaseRegister()

Returns the base register. Variable number AbstractNode.NO_VALUE represents absent value (implicitly the global object).

getFunctionRegister

public int getFunctionRegister()

Returns the function register.

getNumberOfArgs

public int getNumberOfArgs()

Returns the number of arguments.

isArrayLiteral

public boolean isArrayLiteral()

Returns true if this call node comes from an array literal. This allows us to distinguish between [4] and Array(4) for the case where Array gets precisely one numeric argument.

isConstructorCall

public boolean isConstructorCall()

Description copied from interface: ICallNode

Checks whether this is a constructor call or an ordinary call.

Specified by:

isConstructorCall in interface ICallNode

setArgRegister

public void setArgRegister(int i,
                  int var)

Sets the i'th argument to the given argument register. Counts from 0.

setBaseRegister

public void setBaseRegister(int base_var)

Sets the base register.

setFunctionRegister

public void setFunctionRegister(int function_reg)

Sets the function 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