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Bitcoin Core
22.99.0
P2P Digital Currency
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Go to the documentation of this file.
6 #ifndef BITCOIN_SCRIPT_SCRIPT_H
7 #define BITCOIN_SCRIPT_SCRIPT_H
61 return std::vector<unsigned char>(in.begin(), in.end());
237 explicit CScriptNum(
const std::vector<unsigned char>& vch,
bool fRequireMinimal,
240 if (vch.size() > nMaxNumSize) {
243 if (fRequireMinimal && vch.size() > 0) {
250 if ((vch.back() & 0x7f) == 0) {
256 if (vch.size() <= 1 || (vch[vch.size() - 2] & 0x80) == 0) {
305 assert(rhs == 0 || (rhs > 0 &&
m_value <= std::numeric_limits<int64_t>::max() - rhs) ||
306 (rhs < 0 && m_value >= std::numeric_limits<int64_t>::min() - rhs));
313 assert(rhs == 0 || (rhs > 0 &&
m_value >= std::numeric_limits<int64_t>::min() + rhs) ||
314 (rhs < 0 &&
m_value <= std::numeric_limits<int64_t>::max() + rhs));
327 if (
m_value > std::numeric_limits<int>::max())
328 return std::numeric_limits<int>::max();
329 else if (
m_value < std::numeric_limits<int>::min())
330 return std::numeric_limits<int>::min();
334 std::vector<unsigned char>
getvch()
const
339 static std::vector<unsigned char>
serialize(
const int64_t& value)
342 return std::vector<unsigned char>();
344 std::vector<unsigned char> result;
345 const bool neg = value < 0;
346 uint64_t absvalue = neg ? ~static_cast<uint64_t>(value) + 1 :
static_cast<uint64_t
>(value);
350 result.push_back(absvalue & 0xff);
364 if (result.back() & 0x80)
365 result.push_back(neg ? 0x80 : 0);
367 result.back() |= 0x80;
373 static int64_t
set_vch(
const std::vector<unsigned char>& vch)
379 for (
size_t i = 0; i != vch.size(); ++i)
380 result |=
static_cast<int64_t
>(vch[i]) << 8*i;
384 if (vch.back() & 0x80)
385 return -((int64_t)(result & ~(0x80ULL << (8 * (vch.size() - 1)))));
409 if (n == -1 || (n >= 1 && n <= 16))
426 CScript(std::vector<unsigned char>::const_iterator pbegin, std::vector<unsigned char>::const_iterator pend) :
CScriptBase(pbegin, pend) { }
436 explicit CScript(
const std::vector<unsigned char>& b) =
delete;
445 if (opcode < 0 || opcode > 0xff)
446 throw std::runtime_error(
"CScript::operator<<(): invalid opcode");
463 else if (b.size() <= 0xff)
468 else if (b.size() <= 0xffff)
473 insert(
end(), _data, _data +
sizeof(_data));
480 insert(
end(), _data, _data +
sizeof(_data));
502 return (
int)opcode - (int)(
OP_1 - 1);
506 assert(n >= 0 && n <= 16);
529 bool IsWitnessProgram(
int& version, std::vector<unsigned char>& program)
const;
560 std::vector<std::vector<unsigned char> >
stack;
575 #endif // BITCOIN_SCRIPT_SCRIPT_H
CScriptNum operator-() const
scriptnum_error(const std::string &str)
CScript(const_iterator pbegin, const_iterator pend)
bool operator<=(const int64_t &rhs) const
iterator insert(iterator pos, const T &value)
bool operator!=(const CScriptNum &rhs) const
CScriptNum operator&(const CScriptNum &rhs) const
CScriptNum & operator&=(const int64_t &rhs)
static const unsigned int LOCKTIME_THRESHOLD
static void WriteLE32(unsigned char *ptr, uint32_t x)
bool IsPayToWitnessScriptHash() const
CScript & operator<<(const std::vector< unsigned char > &b)
static const size_t nDefaultMaxNumSize
SERIALIZE_METHODS(CScript, obj)
bool IsWitnessProgram(int &version, std::vector< unsigned char > &program) const
bool HasValidOps() const
Check if the script contains valid OP_CODES.
CScriptNum(const int64_t &n)
Numeric opcodes (OP_1ADD, etc) are restricted to operating on 4-byte integers.
std::vector< unsigned char > ToByteVector(const T &in)
CScript(const unsigned char *pbegin, const unsigned char *pend)
static void WriteLE16(unsigned char *ptr, uint16_t x)
bool IsOpSuccess(const opcodetype &opcode)
Test for OP_SUCCESSx opcodes as defined by BIP342.
static opcodetype EncodeOP_N(int n)
static int DecodeOP_N(opcodetype opcode)
Encode/decode small integers:
bool operator==(const int64_t &rhs) const
static const int MAX_STACK_SIZE
bool operator<(const int64_t &rhs) const
CScriptNum(const std::vector< unsigned char > &vch, bool fRequireMinimal, const size_t nMaxNumSize=nDefaultMaxNumSize)
bool IsPayToScriptHash() const
CScriptNum & operator-=(const int64_t &rhs)
#define READWRITEAS(type, obj)
static constexpr unsigned int ANNEX_TAG
static int64_t set_vch(const std::vector< unsigned char > &vch)
bool operator==(const CScriptNum &rhs) const
CScriptNum operator+(const int64_t &rhs) const
static const int MAX_SCRIPT_SIZE
void push_back(const T &value)
bool operator!=(const int64_t &rhs) const
bool GetScriptOp(CScriptBase::const_iterator &pc, CScriptBase::const_iterator end, opcodetype &opcodeRet, std::vector< unsigned char > *pvchRet)
CScriptNum & operator=(const int64_t &rhs)
CScriptNum operator&(const int64_t &rhs) const
CScriptNum operator+(const CScriptNum &rhs) const
bool operator>=(const CScriptNum &rhs) const
bool operator>=(const int64_t &rhs) const
std::string GetOpName(opcodetype opcode)
CScriptNum & operator+=(const CScriptNum &rhs)
CScriptNum & operator&=(const CScriptNum &rhs)
prevector< 28, unsigned char > CScriptBase
We use a prevector for the script to reduce the considerable memory overhead of vectors in cases wher...
static const int MAX_OPS_PER_SCRIPT
static constexpr uint64_t VALIDATION_WEIGHT_PER_SIGOP_PASSED
CScriptNum & operator+=(const int64_t &rhs)
CScript & operator<<(const CScript &b)=delete
Delete non-existent operator to defend against future introduction.
CScript & operator<<(opcodetype opcode)
Serialized script, used inside transaction inputs and outputs.
CScriptNum & operator-=(const CScriptNum &rhs)
std::vector< unsigned char > getvch() const
static std::vector< unsigned char > serialize(const int64_t &value)
Implements a drop-in replacement for std::vector<T> which stores up to N elements directly (without h...
bool GetOp(const_iterator &pc, opcodetype &opcodeRet) const
CScript & operator<<(int64_t b)
unsigned int GetSigOpCount(bool fAccurate) const
Pre-version-0.6, Bitcoin always counted CHECKMULTISIGs as 20 sigops.
CScript & operator<<(const CScriptNum &b)
CScriptNum operator-(const CScriptNum &rhs) const
CScript(std::vector< unsigned char >::const_iterator pbegin, std::vector< unsigned char >::const_iterator pend)
CScriptNum operator-(const int64_t &rhs) const
std::string ToString() const
static const unsigned int MAX_SCRIPT_ELEMENT_SIZE
bool operator>(const int64_t &rhs) const
bool IsUnspendable() const
Returns whether the script is guaranteed to fail at execution, regardless of the initial stack.
static const unsigned int MAX_OPCODE
CScript & push_int64(int64_t n)
bool operator<=(const CScriptNum &rhs) const
CScript(const CScriptNum &b)
static const int MAX_PUBKEYS_PER_MULTISIG
static constexpr uint64_t VALIDATION_WEIGHT_OFFSET
static const uint32_t LOCKTIME_MAX
opcodetype
Script opcodes.
std::vector< std::vector< unsigned char > > stack
bool GetOp(const_iterator &pc, opcodetype &opcodeRet, std::vector< unsigned char > &vchRet) const