Package serp.bytecode
Class StoreInstruction
java.lang.Object
serp.bytecode.Instruction
serp.bytecode.TypedInstruction
serp.bytecode.LocalVariableInstruction
serp.bytecode.StoreInstruction
- All Implemented Interfaces:
BCEntity
,VisitAcceptor
An instruction to store a value from a local variable onto the stack.
- Author:
- Abe White
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Method Summary
Modifier and TypeMethodDescriptionvoid
acceptVisit
(BCVisitor visit) Accept a visit from aBCVisitor
, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this one.boolean
equalsInstruction
(Instruction other) StoreInstructions are equal if the type they reference the same type and locals index or if either is unset.int
Return the logical number of stack positions changed by this instruction.int
Return the number of stack positions this instruction pushes or pops during its execution.Return the type name for this instruction.Set the type of this instruction.Methods inherited from class serp.bytecode.LocalVariableInstruction
getLocal, getLocalVariable, getParam, setLocal, setLocalVariable, setParam
Methods inherited from class serp.bytecode.TypedInstruction
getType, getTypeBC, setType, setType
Methods inherited from class serp.bytecode.Instruction
getByteIndex, getClassLoader, getCode, getLineNumber, getName, getOpcode, getPool, getProject, isValid
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Method Details
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getLogicalStackChange
public int getLogicalStackChange()Description copied from class:Instruction
Return the logical number of stack positions changed by this instruction. In other words, ignore weirdness with longs and doubles taking two stack positions.- Overrides:
getLogicalStackChange
in classInstruction
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getStackChange
public int getStackChange()Description copied from class:Instruction
Return the number of stack positions this instruction pushes or pops during its execution.- Overrides:
getStackChange
in classInstruction
- Returns:
- 0 if the stack is not affected by this instruction, a positive number if it pushes onto the stack, and a negative number if it pops from the stack
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getTypeName
Description copied from class:TypedInstruction
Return the type name for this instruction. If the type has not been set, this method will return null.- Overrides:
getTypeName
in classLocalVariableInstruction
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setType
Description copied from class:TypedInstruction
Set the type of this instruction. Types that have no direct support will be converted accordingly.- Overrides:
setType
in classLocalVariableInstruction
- Returns:
- this instruction, for method chaining
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equalsInstruction
StoreInstructions are equal if the type they reference the same type and locals index or if either is unset.- Overrides:
equalsInstruction
in classLocalVariableInstruction
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acceptVisit
Description copied from interface:VisitAcceptor
Accept a visit from aBCVisitor
, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this one.- Specified by:
acceptVisit
in interfaceVisitAcceptor
- Overrides:
acceptVisit
in classInstruction
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