Package com.ibm.wala.cast.ir.ssa
Class AstLexicalWrite
- java.lang.Object
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- com.ibm.wala.ssa.SSAInstruction
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- com.ibm.wala.cast.ir.ssa.AstLexicalAccess
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- com.ibm.wala.cast.ir.ssa.AstLexicalWrite
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public class AstLexicalWrite extends AstLexicalAccess
A set of lexical writes. This instruction represents writes of a set of variables that are defined by a pair of variable name and defining code body (i.e. a method or function). This instruction has one local value number use for each lexical write, and the call graph builder ensures that these value numbers are kept consistent as lexical uses and definitions are discovered during call graph construction.
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Nested Class Summary
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Nested classes/interfaces inherited from class com.ibm.wala.cast.ir.ssa.AstLexicalAccess
AstLexicalAccess.Access
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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 Constructor Description AstLexicalWrite(int iindex, AstLexicalAccess.Access access)AstLexicalWrite(int iindex, AstLexicalAccess.Access[] accesses)AstLexicalWrite(int iindex, String definer, String globalName, TypeReference type, int rhs)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SSAInstructioncopyForSSA(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.intgetDef(int i)Return the ith defintgetNumberOfDefs()intgetNumberOfUses()intgetUse(int i)StringtoString(SymbolTable symbolTable)voidvisit(SSAInstruction.IVisitor v)Apply an IVisitor to this instruction.-
Methods inherited from class com.ibm.wala.cast.ir.ssa.AstLexicalAccess
getAccess, getAccessCount, getAccesses, getExceptionTypes, hashCode, isFallThrough, setAccesses
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Methods inherited from class com.ibm.wala.ssa.SSAInstruction
equals, getDef, getValueString, hasDef, isPEI, toString
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Constructor Detail
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AstLexicalWrite
public AstLexicalWrite(int iindex, String definer, String globalName, TypeReference type, int rhs)
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AstLexicalWrite
public AstLexicalWrite(int iindex, AstLexicalAccess.Access access)
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AstLexicalWrite
public AstLexicalWrite(int iindex, AstLexicalAccess.Access[] accesses)
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Method Detail
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copyForSSA
public SSAInstruction copyForSSA(SSAInstructionFactory insts, int[] defs, int[] uses)
Description copied from class:SSAInstructionThis 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:
copyForSSAin classSSAInstruction
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getNumberOfUses
public int getNumberOfUses()
- Overrides:
getNumberOfUsesin classSSAInstruction
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getUse
public int getUse(int i)
- Overrides:
getUsein classSSAInstruction- Returns:
- value number representing the jth use in this instruction. -1 means TOP (i.e., the value doesn't matter)
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getNumberOfDefs
public int getNumberOfDefs()
- Overrides:
getNumberOfDefsin classSSAInstruction
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getDef
public int getDef(int i)
Description copied from class:SSAInstructionReturn the ith def- Overrides:
getDefin classSSAInstruction- Parameters:
i- number of the def, starting at 0.
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toString
public String toString(SymbolTable symbolTable)
- Specified by:
toStringin classSSAInstruction
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visit
public void visit(SSAInstruction.IVisitor v)
Description copied from class:SSAInstructionApply an IVisitor to this instruction. We invoke the appropriate IVisitor method according to the type of this instruction.- Specified by:
visitin classSSAInstruction
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