Package com.ibm.wala.ssa
Class SSALoadMetadataInstruction
- java.lang.Object
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- com.ibm.wala.ssa.SSAInstruction
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- com.ibm.wala.ssa.SSALoadMetadataInstruction
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public abstract class SSALoadMetadataInstruction extends SSAInstruction
An instruction that represents a reflective or meta-programming operation, like loadClass in Java
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Nested Class Summary
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Nested classes/interfaces inherited from class com.ibm.wala.ssa.SSAInstruction
SSAInstruction.IVisitor, SSAInstruction.Visitor
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Field Summary
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Fields inherited from class com.ibm.wala.ssa.SSAInstruction
iindex, NO_INDEX
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Constructor Summary
Constructors Modifier Constructor Description protected
SSALoadMetadataInstruction(int iindex, int lval, TypeReference entityType, Object token)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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.int
getDef()
int
getDef(int i)
Return the ith defint
getNumberOfDefs()
Object
getToken()
TypeReference
getType()
boolean
hasDef()
Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g.int
hashCode()
boolean
isFallThrough()
boolean
isPEI()
String
toString(SymbolTable symbolTable)
void
visit(SSAInstruction.IVisitor v)
Apply an IVisitor to this instruction.-
Methods inherited from class com.ibm.wala.ssa.SSAInstruction
equals, getExceptionTypes, getNumberOfUses, getUse, getValueString, toString
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Constructor Detail
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SSALoadMetadataInstruction
protected SSALoadMetadataInstruction(int iindex, int lval, TypeReference entityType, Object token)
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Method Detail
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copyForSSA
public SSAInstruction copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses)
Description copied from class:SSAInstruction
This method is meant to be used during SSA conversion for an IR that is not in SSA form. It creates a new SSAInstruction of the same type as the receiver, with a combination of the receiver's uses and defs and those from the method parameters. In particular, if the 'defs' parameter is null, then the new instruction has the same defs as the receiver. If 'defs' is not null, it must be an array with a size equal to the number of defs that the receiver instruction has. In this case, the new instruction has defs taken from the array. The uses of the new instruction work in the same way with the 'uses' parameter. Note that this only applies to CAst-based IR translation, since Java bytecode-based IR generation uses a different SSA construction mechanism. TODO: move this into the SSAInstructionFactory- Specified by:
copyForSSA
in classSSAInstruction
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toString
public String toString(SymbolTable symbolTable)
- Specified by:
toString
in classSSAInstruction
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visit
public void visit(SSAInstruction.IVisitor v)
Description copied from class:SSAInstruction
Apply an IVisitor to this instruction. We invoke the appropriate IVisitor method according to the type of this instruction.- Specified by:
visit
in classSSAInstruction
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hashCode
public int hashCode()
- Specified by:
hashCode
in classSSAInstruction
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isPEI
public boolean isPEI()
- Overrides:
isPEI
in classSSAInstruction
- Returns:
- true iff this instruction may throw an exception.
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hasDef
public boolean hasDef()
Description copied from class:SSAInstruction
Does this instruction define a normal value, as distinct from a set of exceptions possibly thrown by it (e.g. for invoke instructions).- Overrides:
hasDef
in classSSAInstruction
- Returns:
- true if the instruction does define a proper value.
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getDef
public int getDef()
- Overrides:
getDef
in classSSAInstruction
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getDef
public int getDef(int i)
Description copied from class:SSAInstruction
Return the ith def- Overrides:
getDef
in classSSAInstruction
- Parameters:
i
- number of the def, starting at 0.
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getNumberOfDefs
public int getNumberOfDefs()
- Overrides:
getNumberOfDefs
in classSSAInstruction
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isFallThrough
public boolean isFallThrough()
- Specified by:
isFallThrough
in classSSAInstruction
- Returns:
- true iff this instruction may fall through to the next
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getToken
public Object getToken()
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getType
public TypeReference getType()
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