Constructor
new Opcode(value, datanullable)
Create an opcode. Note: this should not be called directly.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
value |
Number | Opcode. |
|
data |
Buffer |
<nullable> |
Pushdata buffer. |
Properties:
| Name | Type | Description |
|---|---|---|
value |
Number | |
data |
Buffer | null |
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Methods
(static) decode(data) → {Opcode}
Instantiate opcode from serialized data.
Parameters:
| Name | Type | Description |
|---|---|---|
data |
Buffer |
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Returns:
- Type
- Opcode
(static) fromBool(value) → {Opcode}
Instantiate an opcode from a Number.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
Boolean |
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Returns:
- Type
- Opcode
(static) fromData(data) → {Opcode}
Instantiate a pushdata opcode from a buffer (will encode minimaldata).
Parameters:
| Name | Type | Description |
|---|---|---|
data |
Buffer |
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Returns:
- Type
- Opcode
(static) fromInt(num) → {Opcode}
Instantiate an opcode from a Number.
Parameters:
| Name | Type | Description |
|---|---|---|
num |
Number |
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Returns:
- Type
- Opcode
(static) fromNum(num) → {Opcode}
Instantiate an opcode from a ScriptNum.
Parameters:
| Name | Type | Description |
|---|---|---|
num |
ScriptNumber |
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Returns:
- Type
- Opcode
(static) fromOp(op) → {Opcode}
Instantiate an opcode from a number opcode.
Parameters:
| Name | Type | Description |
|---|---|---|
op |
Number |
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Returns:
- Type
- Opcode
(static) fromPush(data) → {Opcode}
Instantiate a pushdata opcode from a buffer (this differs from fromData in that it will always be a pushdata op).
Parameters:
| Name | Type | Description |
|---|---|---|
data |
Buffer |
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Returns:
- Type
- Opcode
(static) fromSmall(num) → {Opcode}
Instantiate an opcode from a small number.
Parameters:
| Name | Type | Description |
|---|---|---|
num |
Number |
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Returns:
- Type
- Opcode
(static) fromString(str, encopt) → {Opcode}
Instantiate a pushdata opcode from a string.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
str |
String | |||
enc |
String |
<optional> |
utf8 |
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Returns:
- Type
- Opcode
(static) fromSymbol(name) → {Opcode}
Instantiate a pushdata opcode from symbolic name.
Parameters:
| Name | Type | Description |
|---|---|---|
name |
String |
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Returns:
- Type
- Opcode
Example
Opcode.fromSymbol('checksequenceverify')(static) isOpcode(obj) → {Boolean}
Test whether an object an Opcode.
Parameters:
| Name | Type | Description |
|---|---|---|
obj |
Object |
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Returns:
- Type
- Boolean
(static) read(br) → {Opcode}
Instantiate opcode from buffer reader.
Parameters:
| Name | Type | Description |
|---|---|---|
br |
BufferReader |
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Returns:
- Type
- Opcode
encode() → {Buffer}
Encode the opcode.
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Returns:
- Type
- Buffer
equals(op) → {Boolean}
Test opcode equality.
Parameters:
| Name | Type | Description |
|---|---|---|
op |
Opcode |
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Returns:
- Type
- Boolean
getSize() → {Number}
Calculate opcode size.
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Returns:
- Type
- Number
isBranch() → {Boolean}
Test whether opcode is a branch (if/else/endif).
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Returns:
- Type
- Boolean
isDisabled() → {Boolean}
Test whether opcode is a disabled opcode.
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Returns:
- Type
- Boolean
isMinimal() → {Boolean}
Test whether a pushdata abides by minimaldata.
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Returns:
- Type
- Boolean
toASM(decodenullable) → {String}
Format the opcode as bitcoind asm.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
decode |
Boolean |
<nullable> |
Attempt to decode hash types. |
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Returns:
Human-readable script.
- Type
- String
toBool() → {Boolean}
Convert opcode to boolean.
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Returns:
- Type
- Boolean
toData() → {Buffer|null}
Covert opcode to data push.
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Returns:
- Type
- Buffer | null
toFormat() → {String}
Convert the opcode to a bitcoind test string.
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Returns:
Human-readable script code.
- Type
- String
toInt(minimalnullable, limitnullable) → {Number}
Convert opcode to integer.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
minimal |
Boolean |
<nullable> |
|
limit |
Number |
<nullable> |
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Returns:
- Type
- Number
toLength() → {Number}
Covert opcode to data length.
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Returns:
- Type
- Number
toNum(minimalnullable, limitnullable) → {ScriptNum|null}
Convert opcode to script number.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
minimal |
Boolean |
<nullable> |
|
limit |
Number |
<nullable> |
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Returns:
- Type
- ScriptNum | null
toOp() → {Number}
Convert Opcode to opcode value.
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Returns:
- Type
- Number
toPush() → {Buffer|null}
Covert and cast opcode to data push.
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Returns:
- Type
- Buffer | null
toSmall() → {Number}
Convert opcode to small integer.
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Returns:
- Type
- Number
toString(encnullable) → {Buffer|null}
Get string for opcode.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
enc |
String |
<nullable> |
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Returns:
- Type
- Buffer | null
toSymbol() → {String}
Convert opcode to its symbolic representation.
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Returns:
- Type
- String
write(bw)
Encode the opcode to a buffer writer.
Parameters:
| Name | Type | Description |
|---|---|---|
bw |
BufferWriter |
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