script.h File Reference

#include <attributes.h>
#include <crypto/common.h>
#include <prevector.h>
#include <serialize.h>
#include <cassert>
#include <climits>
#include <cstdint>
#include <cstring>
#include <limits>
#include <stdexcept>
#include <string>
#include <vector>

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Classes
class	scriptnum_error
class	CScriptNum
class	CScript
	Serialized script, used inside transaction inputs and outputs. More...

Typedefs
typedef prevector< 28, uint8_t >	CScriptBase
	We use a prevector for the script to reduce the considerable memory overhead of vectors in cases where they normally contain a small number of small elements.

Enumerations
enum	opcodetype {   OP_0 = 0x00 , OP_FALSE = OP_0 , OP_PUSHDATA1 = 0x4c , OP_PUSHDATA2 = 0x4d ,   OP_PUSHDATA4 = 0x4e , OP_1NEGATE = 0x4f , OP_RESERVED = 0x50 , OP_1 = 0x51 ,   OP_TRUE = OP_1 , OP_2 = 0x52 , OP_3 = 0x53 , OP_4 = 0x54 ,   OP_5 = 0x55 , OP_6 = 0x56 , OP_7 = 0x57 , OP_8 = 0x58 ,   OP_9 = 0x59 , OP_10 = 0x5a , OP_11 = 0x5b , OP_12 = 0x5c ,   OP_13 = 0x5d , OP_14 = 0x5e , OP_15 = 0x5f , OP_16 = 0x60 ,   OP_NOP = 0x61 , OP_VER = 0x62 , OP_IF = 0x63 , OP_NOTIF = 0x64 ,   OP_VERIF = 0x65 , OP_VERNOTIF = 0x66 , OP_ELSE = 0x67 , OP_ENDIF = 0x68 ,   OP_VERIFY = 0x69 , OP_RETURN = 0x6a , OP_TOALTSTACK = 0x6b , OP_FROMALTSTACK = 0x6c ,   OP_2DROP = 0x6d , OP_2DUP = 0x6e , OP_3DUP = 0x6f , OP_2OVER = 0x70 ,   OP_2ROT = 0x71 , OP_2SWAP = 0x72 , OP_IFDUP = 0x73 , OP_DEPTH = 0x74 ,   OP_DROP = 0x75 , OP_DUP = 0x76 , OP_NIP = 0x77 , OP_OVER = 0x78 ,   OP_PICK = 0x79 , OP_ROLL = 0x7a , OP_ROT = 0x7b , OP_SWAP = 0x7c ,   OP_TUCK = 0x7d , OP_CAT = 0x7e , OP_SPLIT = 0x7f , OP_NUM2BIN = 0x80 ,   OP_BIN2NUM = 0x81 , OP_SIZE = 0x82 , OP_INVERT = 0x83 , OP_AND = 0x84 ,   OP_OR = 0x85 , OP_XOR = 0x86 , OP_EQUAL = 0x87 , OP_EQUALVERIFY = 0x88 ,   OP_RESERVED1 = 0x89 , OP_RESERVED2 = 0x8a , OP_1ADD = 0x8b , OP_1SUB = 0x8c ,   OP_2MUL = 0x8d , OP_2DIV = 0x8e , OP_NEGATE = 0x8f , OP_ABS = 0x90 ,   OP_NOT = 0x91 , OP_0NOTEQUAL = 0x92 , OP_ADD = 0x93 , OP_SUB = 0x94 ,   OP_MUL = 0x95 , OP_DIV = 0x96 , OP_MOD = 0x97 , OP_LSHIFT = 0x98 ,   OP_RSHIFT = 0x99 , OP_BOOLAND = 0x9a , OP_BOOLOR = 0x9b , OP_NUMEQUAL = 0x9c ,   OP_NUMEQUALVERIFY = 0x9d , OP_NUMNOTEQUAL = 0x9e , OP_LESSTHAN = 0x9f , OP_GREATERTHAN = 0xa0 ,   OP_LESSTHANOREQUAL = 0xa1 , OP_GREATERTHANOREQUAL = 0xa2 , OP_MIN = 0xa3 , OP_MAX = 0xa4 ,   OP_WITHIN = 0xa5 , OP_RIPEMD160 = 0xa6 , OP_SHA1 = 0xa7 , OP_SHA256 = 0xa8 ,   OP_HASH160 = 0xa9 , OP_HASH256 = 0xaa , OP_CODESEPARATOR = 0xab , OP_CHECKSIG = 0xac ,   OP_CHECKSIGVERIFY = 0xad , OP_CHECKMULTISIG = 0xae , OP_CHECKMULTISIGVERIFY = 0xaf , OP_NOP1 = 0xb0 ,   OP_CHECKLOCKTIMEVERIFY = 0xb1 , OP_NOP2 = OP_CHECKLOCKTIMEVERIFY , OP_CHECKSEQUENCEVERIFY = 0xb2 , OP_NOP3 = OP_CHECKSEQUENCEVERIFY ,   OP_NOP4 = 0xb3 , OP_NOP5 = 0xb4 , OP_NOP6 = 0xb5 , OP_NOP7 = 0xb6 ,   OP_NOP8 = 0xb7 , OP_NOP9 = 0xb8 , OP_NOP10 = 0xb9 , OP_CHECKDATASIG = 0xba ,   OP_CHECKDATASIGVERIFY = 0xbb , OP_REVERSEBYTES = 0xbc , FIRST_UNDEFINED_OP_VALUE , OP_PREFIX_BEGIN = 0xf0 ,   OP_PREFIX_END = 0xf7 , OP_INVALIDOPCODE = 0xff }
	Script opcodes. More...

Functions
template<typename T >
std::vector< uint8_t >	ToByteVector (const T &in)
std::string	GetOpName (opcodetype opcode)
bool	CheckMinimalPush (const std::vector< uint8_t > &data, opcodetype opcode)
	Check whether the given stack element data would be minimally pushed using the given opcode.
bool	GetScriptOp (CScriptBase::const_iterator &pc, CScriptBase::const_iterator end, opcodetype &opcodeRet, std::vector< uint8_t > *pvchRet)

Variables
static const unsigned int	MAX_SCRIPT_ELEMENT_SIZE = 520
static const int	MAX_OPS_PER_SCRIPT = 201
static const int	MAX_PUBKEYS_PER_MULTISIG = 20
static const int	MAX_SCRIPT_SIZE = 10000
static const int	MAX_STACK_SIZE = 1000
static const unsigned int	LOCKTIME_THRESHOLD = 500000000
static const unsigned int	MAX_OPCODE = FIRST_UNDEFINED_OP_VALUE - 1

Typedef Documentation

CScriptBase

typedef prevector<28, uint8_t> CScriptBase

We use a prevector for the script to reduce the considerable memory overhead of vectors in cases where they normally contain a small number of small elements.

Tests in October 2015 showed use of this reduced dbcache memory usage by 23% and made an initial sync 13% faster.

Definition at line 417 of file script.h.

Enumeration Type Documentation

opcodetype

enum opcodetype

Script opcodes.

Enumerator
OP_0
OP_FALSE
OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_1NEGATE
OP_RESERVED
OP_1
OP_TRUE
OP_2
OP_3
OP_4
OP_5
OP_6
OP_7
OP_8
OP_9
OP_10
OP_11
OP_12
OP_13
OP_14
OP_15
OP_16
OP_NOP
OP_VER
OP_IF
OP_NOTIF
OP_VERIF
OP_VERNOTIF
OP_ELSE
OP_ENDIF
OP_VERIFY
OP_RETURN
OP_TOALTSTACK
OP_FROMALTSTACK
OP_2DROP
OP_2DUP
OP_3DUP
OP_2OVER
OP_2ROT
OP_2SWAP
OP_IFDUP
OP_DEPTH
OP_DROP
OP_DUP
OP_NIP
OP_OVER
OP_PICK
OP_ROLL
OP_ROT
OP_SWAP
OP_TUCK
OP_CAT
OP_SPLIT
OP_NUM2BIN
OP_BIN2NUM
OP_SIZE
OP_INVERT
OP_AND
OP_OR
OP_XOR
OP_EQUAL
OP_EQUALVERIFY
OP_RESERVED1
OP_RESERVED2
OP_1ADD
OP_1SUB
OP_2MUL
OP_2DIV
OP_NEGATE
OP_ABS
OP_NOT
OP_0NOTEQUAL
OP_ADD
OP_SUB
OP_MUL
OP_DIV
OP_MOD
OP_LSHIFT
OP_RSHIFT
OP_BOOLAND
OP_BOOLOR
OP_NUMEQUAL
OP_NUMEQUALVERIFY
OP_NUMNOTEQUAL
OP_LESSTHAN
OP_GREATERTHAN
OP_LESSTHANOREQUAL
OP_GREATERTHANOREQUAL
OP_MIN
OP_MAX
OP_WITHIN
OP_RIPEMD160
OP_SHA1
OP_SHA256
OP_HASH160
OP_HASH256
OP_CODESEPARATOR
OP_CHECKSIG
OP_CHECKSIGVERIFY
OP_CHECKMULTISIG
OP_CHECKMULTISIGVERIFY
OP_NOP1
OP_CHECKLOCKTIMEVERIFY
OP_NOP2
OP_CHECKSEQUENCEVERIFY
OP_NOP3
OP_NOP4
OP_NOP5
OP_NOP6
OP_NOP7
OP_NOP8
OP_NOP9
OP_NOP10
OP_CHECKDATASIG
OP_CHECKDATASIGVERIFY
OP_REVERSEBYTES
FIRST_UNDEFINED_OP_VALUE
OP_PREFIX_BEGIN
OP_PREFIX_END
OP_INVALIDOPCODE

Definition at line 47 of file script.h.

Function Documentation

CheckMinimalPush()

bool CheckMinimalPush	(	const std::vector< uint8_t > &	data,
		opcodetype	opcode
	)

Check whether the given stack element data would be minimally pushed using the given opcode.

Definition at line 268 of file script.cpp.

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GetOpName()

std::string GetOpName

(

opcodetype

opcode

)

Definition at line 14 of file script.cpp.

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GetScriptOp()

bool GetScriptOp	(	CScriptBase::const_iterator &	pc,
		CScriptBase::const_iterator	end,
		opcodetype &	opcodeRet,
		std::vector< uint8_t > *	pvchRet
	)

Definition at line 426 of file script.cpp.

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ToByteVector()

template<typename T >

std::vector< uint8_t > ToByteVector

(

const T &

in

)

Definition at line 42 of file script.h.

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Variable Documentation

LOCKTIME_THRESHOLD

const unsigned int LOCKTIME_THRESHOLD = 500000000

static

Definition at line 40 of file script.h.

MAX_OPCODE

const unsigned int MAX_OPCODE = FIRST_UNDEFINED_OP_VALUE - 1

static

Definition at line 200 of file script.h.

MAX_OPS_PER_SCRIPT

const int MAX_OPS_PER_SCRIPT = 201

static

Definition at line 27 of file script.h.

MAX_PUBKEYS_PER_MULTISIG

const int MAX_PUBKEYS_PER_MULTISIG = 20

static

Definition at line 30 of file script.h.

MAX_SCRIPT_ELEMENT_SIZE

const unsigned int MAX_SCRIPT_ELEMENT_SIZE = 520

static

Definition at line 24 of file script.h.

MAX_SCRIPT_SIZE

const int MAX_SCRIPT_SIZE = 10000

static

Definition at line 33 of file script.h.

MAX_STACK_SIZE

const int MAX_STACK_SIZE = 1000

static

Definition at line 36 of file script.h.