org.bitcoinj.script

Class ScriptChunk

java.lang.Object

org.bitcoinj.script.ScriptChunk

public class ScriptChunk
extends Object

A script element that is either a data push (signature, pubkey, etc) or a non-push (logic, numeric, etc) operation.

Field Summary

Fields

Modifier and Type	Field and Description
byte[]	data For push operations, this is the vector to be pushed on the stack.
int	opcode Operation to be executed.

Constructor Summary

Constructors

Constructor and Description
ScriptChunk(int opcode, byte[] data)
ScriptChunk(int opcode, byte[] data, int startLocationInProgram)

Method Summary

Modifier and Type	Method and Description
int	decodeOpN() If this chunk is an OP_N opcode returns the equivalent integer value.
boolean	equals(Object o)
boolean	equalsOpCode(int opcode)
int	getStartLocationInProgram()
int	hashCode()
boolean	isOpCode() If this chunk is a single byte of non-pushdata content (could be OP_RESERVED or some invalid Opcode)
boolean	isPushData() Returns true if this chunk is pushdata content, including the single-byte pushdatas.
boolean	isShortestPossiblePushData() Called on a pushdata chunk, returns true if it uses the smallest possible way (according to BIP62) to push the data.
String	toString()
void	write(OutputStream stream)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

opcode

public final int opcode

Operation to be executed. Opcodes are defined in ScriptOpCodes.

data

@Nullable
public final byte[] data

For push operations, this is the vector to be pushed on the stack. For ScriptOpCodes.OP_0, the vector is empty. Null for non-push operations.

Constructor Detail

ScriptChunk

public ScriptChunk(int opcode,
                   byte[] data)

ScriptChunk

public ScriptChunk(int opcode,
                   byte[] data,
                   int startLocationInProgram)

Method Detail

equalsOpCode

public boolean equalsOpCode(int opcode)

isOpCode

public boolean isOpCode()

If this chunk is a single byte of non-pushdata content (could be OP_RESERVED or some invalid Opcode)

isPushData

public boolean isPushData()

Returns true if this chunk is pushdata content, including the single-byte pushdatas.

getStartLocationInProgram

public int getStartLocationInProgram()

decodeOpN

public int decodeOpN()

If this chunk is an OP_N opcode returns the equivalent integer value.

isShortestPossiblePushData

public boolean isShortestPossiblePushData()

Called on a pushdata chunk, returns true if it uses the smallest possible way (according to BIP62) to push the data.

write

public void write(OutputStream stream)
           throws IOException

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object