Class AstLexicalAccess

java.lang.Object

com.ibm.wala.ssa.SSAInstruction

com.ibm.wala.cast.ir.ssa.AstLexicalAccess

Direct Known Subclasses:

AstLexicalRead, AstLexicalWrite

public abstract class AstLexicalAccess
extends SSAInstruction

This abstract class provides helper functionality for recording lexical uses and/or definitions. It is used in lexical read and write instructions

Author:

Julian Dolby (dolby@us.ibm.com)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AstLexicalAccess.Access	A single lexical access.

Nested classes/interfaces inherited from class SSAInstruction

SSAInstruction.IVisitor, SSAInstruction.Visitor

Modifier and Type	Class	Description
static interface	SSAInstruction.IVisitor	This interface is used by Instruction.visit to dispatch based on the instruction type.
static class	SSAInstruction.Visitor	A base visitor implementation that does nothing.

Field Summary

Fields inherited from class SSAInstruction

NO_INDEX

Modifier and Type	Field	Description
static final int	NO_INDEX

Method Summary

Modifier and Type	Method	Description
AstLexicalAccess.Access	getAccess(int i)
int	getAccessCount()
AstLexicalAccess.Access[]	getAccesses()
Collection<TypeReference>	getExceptionTypes()	This method should never return null.
int	hashCode()
boolean	isFallThrough()
void	setAccesses(AstLexicalAccess.Access[] accesses)

Methods inherited from class SSAInstruction

copyForSSA, equals, getDef, getDef, getNumberOfDefs, getNumberOfUses, getUse, getValueString, hasDef, iIndex, isPEI, setInstructionIndex, toString, toString, visit

Modifier and Type	Method	Description
abstract SSAInstruction	copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses)	This method is meant to be used during SSA conversion for an IR that is not in SSA form.
final boolean	equals(Object obj)	We assume these instructions are canonical and managed by a governing IR object.
int	getDef()
int	getDef(int i)	Return the ith def
int	getNumberOfDefs()
int	getNumberOfUses()
int	getUse(int j)
protected String	getValueString(SymbolTable symbolTable, int valueNumber)
boolean	hasDef()	Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g.
int	iIndex()
boolean	isPEI()
void	setInstructionIndex(int instructionIndex)
String	toString()
abstract String	toString(SymbolTable symbolTable)
abstract void	visit(SSAInstruction.IVisitor v)	Apply an IVisitor to this instruction.

Methods inherited from class Object

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

Method Details

setAccesses

public void setAccesses(AstLexicalAccess.Access[] accesses)

getAccesses

public AstLexicalAccess.Access[] getAccesses()

getAccess

public AstLexicalAccess.Access getAccess(int i)

getAccessCount

public int getAccessCount()

isFallThrough

public boolean isFallThrough()

Specified by:

isFallThrough in class SSAInstruction

Returns:

true iff this instruction may fall through to the next

getExceptionTypes

public Collection<TypeReference> getExceptionTypes()

Description copied from class: SSAInstruction

This method should never return null.

Overrides:

getExceptionTypes in class SSAInstruction

Returns:

the set of exception types that an instruction might throw ... disregarding athrows and invokes.

hashCode

public int hashCode()

Specified by:

hashCode in class SSAInstruction