Package serp.bytecode
Class WideInstruction
- java.lang.Object
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- serp.bytecode.CodeEntry
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- serp.bytecode.Instruction
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- serp.bytecode.TypedInstruction
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- serp.bytecode.LocalVariableInstruction
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- serp.bytecode.WideInstruction
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- All Implemented Interfaces:
BCEntity
,VisitAcceptor
public class WideInstruction extends LocalVariableInstruction
Thewide
instruction, which is used to allow other instructions to index values beyond what they can normally index baed on the length of their arguments.
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Constructor Summary
Constructors Constructor Description WideInstruction(Code owner)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
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.WideInstruction
aload()
Set the type of instruction this wide instruction modifies.WideInstruction
astore()
Set the type of instruction this wide instruction modifies.WideInstruction
dload()
Set the type of instruction this wide instruction modifies.WideInstruction
dstore()
Set the type of instruction this wide instruction modifies.boolean
equalsInstruction(Instruction other)
WideInstructions are equal if the instruction they augment is the same or unset.WideInstruction
fload()
Set the type of instruction this wide instruction modifies.WideInstruction
fstore()
Set the type of instruction this wide instruction modifies.int
getIncrement()
Return the increment for this instruction if it augments IINC, or -1 if unset.int
getInstruction()
Return the opcode of the instruction to modify; this will return one of the constants defined inConstants
.(package private) int
getLength()
Return the length in bytes of this opcode, including all arguments.int
getLogicalStackChange()
Return the logical number of stack positions changed by this instruction.int
getStackChange()
Return the number of stack positions this instruction pushes or pops during its execution.java.lang.String
getTypeName()
Return the type name for this instruction.WideInstruction
iinc()
Set the type of instruction this wide instruction modifies.WideInstruction
iload()
Set the type of instruction this wide instruction modifies.WideInstruction
istore()
Set the type of instruction this wide instruction modifies.WideInstruction
lload()
Set the type of instruction this wide instruction modifies.WideInstruction
lstore()
Set the type of instruction this wide instruction modifies.(package private) void
read(java.io.DataInput in)
Read the arguments for this opcode from the given stream.(package private) void
read(Instruction orig)
Copy the given instruction data.WideInstruction
ret()
Set the type of instruction this wide instruction modifies.WideInstruction
setIncrement(int val)
Set the increment on this instruction if it augments IINC.WideInstruction
setInstruction(int opcode)
Set the type of instruction this wide instruction modifies.WideInstruction
setInstruction(Instruction ins)
Set the type of instruction this wide instruction modifies.TypedInstruction
setType(java.lang.String type)
Set the type of this instruction.(package private) void
write(java.io.DataOutput out)
Write the arguments for this opcode to the given stream.-
Methods inherited from class serp.bytecode.LocalVariableInstruction
calculateLocal, calculateOpcode, getLocal, getLocalVariable, getParam, setLocal, setLocalVariable, setParam
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Methods inherited from class serp.bytecode.TypedInstruction
getType, getTypeBC, mapType, setType, setType
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Methods inherited from class serp.bytecode.Instruction
getByteIndex, getClassLoader, getCode, getLineNumber, getName, getOpcode, getPool, getProject, invalidate, invalidateByteIndexes, isValid, setOpcode
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Constructor Detail
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WideInstruction
WideInstruction(Code owner)
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Method Detail
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getLength
int getLength()
Description copied from class:Instruction
Return the length in bytes of this opcode, including all arguments. For many opcodes this method relies on an up-to-date byte index.- Overrides:
getLength
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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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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getTypeName
public java.lang.String 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
public TypedInstruction setType(java.lang.String type)
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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getInstruction
public int getInstruction()
Return the opcode of the instruction to modify; this will return one of the constants defined inConstants
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setInstruction
public WideInstruction setInstruction(Instruction ins)
Set the type of instruction this wide instruction modifies.
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setInstruction
public WideInstruction setInstruction(int opcode)
Set the type of instruction this wide instruction modifies.
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iinc
public WideInstruction iinc()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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ret
public WideInstruction ret()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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iload
public WideInstruction iload()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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fload
public WideInstruction fload()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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aload
public WideInstruction aload()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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lload
public WideInstruction lload()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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dload
public WideInstruction dload()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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istore
public WideInstruction istore()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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fstore
public WideInstruction fstore()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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astore
public WideInstruction astore()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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lstore
public WideInstruction lstore()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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dstore
public WideInstruction dstore()
Set the type of instruction this wide instruction modifies.- Returns:
- this instruction, for method chaining
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getIncrement
public int getIncrement()
Return the increment for this instruction if it augments IINC, or -1 if unset.
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setIncrement
public WideInstruction setIncrement(int val)
Set the increment on this instruction if it augments IINC.- Returns:
- this Instruction, for method chaining
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equalsInstruction
public boolean equalsInstruction(Instruction other)
WideInstructions are equal if the instruction they augment is the same or unset.- Overrides:
equalsInstruction
in classLocalVariableInstruction
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acceptVisit
public void acceptVisit(BCVisitor visit)
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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read
void read(Instruction orig)
Description copied from class:Instruction
Copy the given instruction data.- Overrides:
read
in classLocalVariableInstruction
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read
void read(java.io.DataInput in) throws java.io.IOException
Description copied from class:Instruction
Read the arguments for this opcode from the given stream. This method should be overridden by opcodes that take arguments.- Overrides:
read
in classInstruction
- Throws:
java.io.IOException
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write
void write(java.io.DataOutput out) throws java.io.IOException
Description copied from class:Instruction
Write the arguments for this opcode to the given stream. This method should be overridden by opcodes that take arguments.- Overrides:
write
in classInstruction
- Throws:
java.io.IOException
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