org.jtool.jxplatform.graph.cfg
Class CFGStatement

java.lang.Object
  org.jtool.jxplatform.graph.GraphNode
      org.jtool.jxplatform.graph.cfg.CFGNode
          org.jtool.jxplatform.graph.cfg.CFGStatement

All Implemented Interfaces:

GraphElement, GraphNodeSort

Direct Known Subclasses:

CFGAssignment, CFGBranch, CFGCall, CFGDeclaration, CFGParameter

public class CFGStatement

extends CFGNode

A statement node of CFGs.

Author:

Katsuhsa Maruyama

Field Summary

protected JxVariableList	defs A collection of variables defined at this node.
protected JxVariableList	uses A collection of variables used at this node.

Fields inherited from class org.jtool.jxplatform.graph.cfg.CFGNode

defid, element

Fields inherited from class org.jtool.jxplatform.graph.GraphNode

id, nodeNum, sort

Fields inherited from interface org.jtool.jxplatform.graph.GraphNodeSort

actualIn, actualOut, assignments, assignmentSt, branches, breakSt, callings, caseLabel, classEntry, classExit, constructorCall, constructorEntry, constructorExit, continueSt, defaultLabel, doSt, entries, exits, fieldDecl, formalIn, formalOut, forSt, ifSt, ignores, instanceCreation, interfaceEntry, interfaceExit, labelSt, localDecl, mergeSt, methodCall, methodEntry, methodExit, newSt, parameters, polymorphicCall, returnSt, switchSt, synchronizedSt, throwSt, trySt, whileSt

Constructor Summary

protected	CFGStatement() Creates a new, empty object.
protected	CFGStatement(int sort, org.w3c.dom.Element elem) Creates a new node.

Method Summary

protected void	addDefinedVariable(JxVariable jv) Adds a defined variable.
protected void	addDefinedVariables(JxDefUseExpression jexp) Adds defined variables of an expression or a statement.
protected void	addDefinedVariables(JxVariableList jvl) Adds defined variables in a collection.
protected void	addUsedVariable(JxVariable jv) Adds a used variable.
protected void	addUsedVariables(JxDefUseExpression jexp) Adds used variables of an expression or a statement.
protected void	addUsedVariables(JxVariableList jvl) Adds used variables in a collection.
protected void	clearDefinedVariable() Clears a collection of defined variables.
protected void	clearUsedVariable() Clears a collection of used variables.
boolean	definesVariable(JxVariable jv) Tests if this statement defines a variable.
JxVariable	getDefinedVariable(java.lang.String name) Returns a defined variable with a name at this statement.
JxVariableList	getDefinedVariables() Returns variables defined at this statement.
JxVariable	getUsedVariable(java.lang.String name) Returns a defined variable with a name at this statement.
JxVariableList	getUsedVariables() Returns variables used at this statement.
boolean	isStatement() Tests if this node indicates a statement.
void	print(java.lang.StringBuffer buf) protected Collects information about this statement for printing.
void	printDefUse(java.lang.String mesg, java.lang.StringBuffer buf) Collects information about this statement for printing.
protected void	removeDefinedVariable(JxVariable jv) Removes a defined variable.
protected void	removeUsedVariable(JxVariable jv) Removes a used variable.
protected void	setDefinedVariable(JxVariable jv) Sets a defined variable.
protected void	setDefinedVariables(JxDefUseExpression jexp) Sets defined variables of a stetement.
protected void	setUsedVariable(JxVariable jv) Sets a used variable.
protected void	setUsedVariables(JxDefUseExpression jexp) Sets used variables of a statement.
boolean	usesVariable(JxVariable jv) Tests if this statement uses a variable.

Methods inherited from class org.jtool.jxplatform.graph.cfg.CFGNode

equals, getDefId, getElem, getPredecessors, getPredecessorsNumber, getSuccessors, getSuccessorsNumber, hasDefVariable, hasUseVariable, isAssignmentSt, isBranch, isBranchSt, isBreakSt, isCallSt, isContinueSt, isDoSt, isEntrySt, isExitSt, isFieldSt, isFormalInSt, isFormalOutSt, isFormalSt, isForSt, isGeneralAssignmentSt, isGeneralStatement, isIfSt, isIgnoredSt, isJoin, isLabelSt, isLocalSt, isLoopSt, isMergeSt, isMethodEntry, isParameterSt, isReturnSt, isSwitchLabel, isSwitchSt, isWhileSt, print, print, write

Methods inherited from class org.jtool.jxplatform.graph.GraphNode

addIncomingEdge, addIncomingEdges, addOutgoingEdge, addOutgoingEdges, clear, clearId, clearIncomingEdges, clearOutgoingEdges, getDstNodes, getId, getIncomingEdges, getOutgoingEdges, getSort, getSrcNodes, removeIncomingEdge, removeOutgoingEdge, setDstNodes, setIncomingEdges, setOutgoingEdges, setSort, setSrcNodes

Methods inherited from class java.lang.Object

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

Field Detail

defs

protected JxVariableList defs

A collection of variables defined at this node.

uses

protected JxVariableList uses

A collection of variables used at this node.

Constructor Detail

CFGStatement

protected CFGStatement()

Creates a new, empty object.

CFGStatement

protected CFGStatement(int sort,
                       org.w3c.dom.Element elem)

Creates a new node.

Parameters:

sort - The sort of this node.

elem - A DOM element corresponding to this node.

Method Detail

isStatement

public boolean isStatement()

Tests if this node indicates a statement.

Overrides:

isStatement in class CFGNode

Returns:

always true.

setDefinedVariables

protected void setDefinedVariables(JxDefUseExpression jexp)
                            throws JxWrapperException

Sets defined variables of a stetement.

Parameters:

jexp - A def-use expression wrapper which might define variables.

Throws:

JxWrapperException - if the collection of variables fails.

setUsedVariables

protected void setUsedVariables(JxDefUseExpression jexp)
                         throws JxWrapperException

Sets used variables of a statement.

Parameters:

jexp - A def-use expression wrapper which might use variables.

Throws:

JxWrapperException - if the collection of variables fails.

setDefinedVariable

protected void setDefinedVariable(JxVariable jv)

Sets a defined variable.

Parameters:

jv - A variable wrapper to be stored.

setUsedVariable

protected void setUsedVariable(JxVariable jv)

Sets a used variable.

Parameters:

jv - A variable wrapper to be stored.

addDefinedVariable

protected void addDefinedVariable(JxVariable jv)

Adds a defined variable.

Parameters:

jv - A variable wrapper to be added.

addUsedVariable

protected void addUsedVariable(JxVariable jv)

Adds a used variable.

Parameters:

jv - A variable wrapper to be added.

addDefinedVariables

protected void addDefinedVariables(JxVariableList jvl)

Adds defined variables in a collection.

Parameters:

jvl - A collection of defined variables to be added.

addUsedVariables

protected void addUsedVariables(JxVariableList jvl)

Adds used variables in a collection.

Parameters:

jvl - A collection of used variables to be added.

removeDefinedVariable

protected void removeDefinedVariable(JxVariable jv)

Removes a defined variable.

Parameters:

jv - A variable wrapper to be removed.

removeUsedVariable

protected void removeUsedVariable(JxVariable jv)

Removes a used variable.

Parameters:

jv - A variable wrapper to be removed.

clearDefinedVariable

protected void clearDefinedVariable()

Clears a collection of defined variables.

clearUsedVariable

protected void clearUsedVariable()

Clears a collection of used variables.

addDefinedVariables

protected void addDefinedVariables(JxDefUseExpression jexp)
                            throws JxWrapperException

Adds defined variables of an expression or a statement.

Parameters:

jexp - A def-use expression wrapper which might define variables.

Throws:

JxWrapperException - if the collection of variables fails.

addUsedVariables

protected void addUsedVariables(JxDefUseExpression jexp)
                         throws JxWrapperException

Adds used variables of an expression or a statement.

Parameters:

jexp - A def-use expression wrapper which might use variables.

Throws:

JxWrapperException - if the collection of variables fails.

getDefinedVariables

public JxVariableList getDefinedVariables()

Returns variables defined at this statement.

Returns:

The colelction of variables defined at this statement.

getUsedVariables

public JxVariableList getUsedVariables()

Returns variables used at this statement.

Returns:

The colelction of variables used at this statement.

definesVariable

public boolean definesVariable(JxVariable jv)

Tests if this statement defines a variable.

Parameters:

jv - A variable wrapper to be tested.

Returns:

true if this statement defines the variable, otherwise false.

usesVariable

public boolean usesVariable(JxVariable jv)

Tests if this statement uses a variable.

Parameters:

jv - A variable wrapper to be tested.

Returns:

true if this statement uses the variable, otherwise false.

getDefinedVariable

public JxVariable getDefinedVariable(java.lang.String name)

Returns a defined variable with a name at this statement.

Parameters:

name - The name of a variable to be retrieved.

Returns:

The variable wrapper, or null if there is no variable found.

getUsedVariable

public JxVariable getUsedVariable(java.lang.String name)

Returns a defined variable with a name at this statement.

Parameters:

name - The name of a variable to be retrieved.

Returns:

The variable wrapper, or null if there is no variable found.

print

public void print(java.lang.StringBuffer buf)

protected Collects information about this statement for printing.

Overrides:

print in class GraphNode

Parameters:

buf - The information about the stetement.

printDefUse

public void printDefUse(java.lang.String mesg,
                        java.lang.StringBuffer buf)

Collects information about this statement for printing.

Parameters:

mesg - The description about this statement.

buf - The information about the statement.