Class DE.fub.inf.JVM.ClassGen.CPInstruction
java.lang.Object
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+--DE.fub.inf.JVM.ClassGen.Instruction
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+--DE.fub.inf.JVM.ClassGen.CPInstruction
- Subclasses:
- ANEWARRAY, CHECKCAST, FieldInstruction, INSTANCEOF, InvokeInstruction, LDC_W, LDC2_W, LDC, MULTIANEWARRAY, NEW
- public abstract class CPInstruction
- extends Instruction
Abstract super class for instructions that use an index into the
constant pool such as LDC, INVOKEVIRTUAL, etc.
- Version:
- $Id: CPInstruction.java,v 1.2 1998/08/14 16:56:10 dahm Exp $
- Author:
- M. Dahm
- See Also:
- ConstantPoolGen, LDC, INVOKEVIRTUAL, Serialized Form
Method Summary
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void
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dump(java.io.DataOutputStream out)
Dump instruction as byte code to stream out. |
int
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getIndex()
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void
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initFromFile(ByteSequence bytes,
boolean wide)
Read needed data (i.e. index) from file. |
void
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setIndex(int index)
Set the index to constant pool. |
java.lang.String
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toString(boolean verbose)
Long output format:
<position in byte code>
<name of opcode> "["<opcode number>"]"
"("<length of instruction>")" "<"< constant pool index>">" |
java.lang.String
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toString(ConstantPool cp)
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Methods inherited from class DE.fub.inf.JVM.ClassGen.Instruction |
consumeStack, dump, getInstructionList, getLength, getPosition, getTag, initFromFile, produceStack, readInstruction, setPosition, toString, toString, toString, updatePosition |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notifyAll, notify, toString, wait, wait, wait |
index
protected int index
CPInstruction
protected CPInstruction(short tag,
int index)
- Parameters:
index
- to constant pool
dump
public void dump(java.io.DataOutputStream out)
throws java.io.IOException
- Dump instruction as byte code to stream out.
- Parameters:
out
- Output stream- Overrides:
- dump in class Instruction
toString
public java.lang.String toString(boolean verbose)
- Long output format:
<position in byte code>
<name of opcode> "["<opcode number>"]"
"("<length of instruction>")" "<"< constant pool index>">"
- Parameters:
verbose
- long/short format switch- Returns:
- mnemonic for instruction
- Overrides:
- toString in class Instruction
toString
public java.lang.String toString(ConstantPool cp)
- Returns:
- mnemonic for instruction with sumbolic references resolved
- Overrides:
- toString in class Instruction
initFromFile
protected void initFromFile(ByteSequence bytes,
boolean wide)
throws java.io.IOException
- Read needed data (i.e. index) from file.
- Overrides:
- initFromFile in class Instruction
getIndex
public final int getIndex()
- Returns:
- index in constant pool referred by this instruction.
setIndex
public final void setIndex(int index)
- Set the index to constant pool.