Class CScript

src/script/script.h:467–629

Serialized script, used inside transaction inputs and outputs */

/** Serialized script, used inside transaction inputs and outputs */
class CScript : public CScriptBase
{
protected:
    CScript& push_int64(int64_t n)
    {
        if (n == -1 || (n >= 1 && n <= 16))
        {
            push_back(n + (OP_1 - 1));
        }
        else if (n == 0)
        {
            push_back(OP_0);
        }
        else
        {
            *this << CScriptNum::serialize(n);
        }
        return *this;
    }
public:
    CScript() { }
    CScript(const_iterator pbegin, const_iterator pend) : CScriptBase(pbegin, pend) { }
    CScript(std::vector<unsigned char>::const_iterator pbegin, std::vector<unsigned char>::const_iterator pend) : CScriptBase(pbegin, pend) { }
    CScript(const unsigned char* pbegin, const unsigned char* pend) : CScriptBase(pbegin, pend) { }

    SERIALIZE_METHODS(CScript, obj) { READWRITEAS(CScriptBase, obj); }

    explicit CScript(int64_t b) { operator<<(b); }
    explicit CScript(opcodetype b)     { operator<<(b); }
    explicit CScript(const CScriptNum& b) { operator<<(b); }
    // delete non-existent constructor to defend against future introduction
    // e.g. via prevector
    explicit CScript(const std::vector<unsigned char>& b) = delete;

    /** Delete non-existent operator to defend against future introduction */
    CScript& operator<<(const CScript& b) = delete;

    CScript& operator<<(int64_t b) LIFETIMEBOUND { return push_int64(b); }

    CScript& operator<<(opcodetype opcode) LIFETIMEBOUND
    {
        if (opcode < 0 || opcode > 0xff)
            throw std::runtime_error("CScript::operator<<(): invalid opcode");
        insert(end(), (unsigned char)opcode);
        return *this;
    }

    CScript& operator<<(const CScriptNum& b) LIFETIMEBOUND
    {
        *this << b.getvch();
        return *this;
    }

    CScript& operator<<(const std::vector<unsigned char>& b) LIFETIMEBOUND
    {
        if (b.size() < OP_PUSHDATA1)
        {
            insert(end(), (unsigned char)b.size());