Python cast_to_number示例

示例#1

文件： crypto.py 项目： sirk390/coinpy

def op_checkmultisig(vm, instr):
    if len(vm.stack) < 1:
        raise Exception("OP_CHECKMULTISIG: Stack too small for pubkey_count")
    pubkey_count = cast_to_number(vm.stack.pop())
    if len(vm.stack) < pubkey_count:
        raise Exception("OP_CHECKMULTISIG: Stack too small for pubkeys")
    pubkeys = vm.stack[-pubkey_count:]
    del vm.stack[-pubkey_count:]
    if len(vm.stack) < 1:
        raise Exception("OP_CHECKMULTISIG: Stack too small for sig_count")
    sig_count = cast_to_number(vm.stack.pop())
    if len(vm.stack) < sig_count:
        raise Exception("OP_CHECKMULTISIG: Stack too small for sigs")
    sigs = vm.stack[-sig_count:]
    del vm.stack[-sig_count:]
    vm.stack.append (valtype_from_boolean(check_multisig(vm, sigs, pubkeys)))

示例#2

def op_checkmultisig(vm, instr):
    if len(vm.stack) < 1:
        raise Exception("OP_CHECKMULTISIG: Stack too small for pubkey_count")
    pubkey_count = cast_to_number(vm.stack.pop())
    if len(vm.stack) < pubkey_count:
        raise Exception("OP_CHECKMULTISIG: Stack too small for pubkeys")
    pubkeys = vm.stack[-pubkey_count:]
    del vm.stack[-pubkey_count:]
    if len(vm.stack) < 1:
        raise Exception("OP_CHECKMULTISIG: Stack too small for sig_count")
    sig_count = cast_to_number(vm.stack.pop())
    if len(vm.stack) < sig_count:
        raise Exception("OP_CHECKMULTISIG: Stack too small for sigs")
    sigs = vm.stack[-sig_count:]
    del vm.stack[-sig_count:]
    vm.stack.append(valtype_from_boolean(check_multisig(vm, sigs, pubkeys)))

示例#3

文件： stack.py 项目： wizardofozzie/coinpy

def op_pick(vm, instr):
    if len(vm.stack) < 2:
        raise Exception("OP_PICK: Not enought arguments")
    n = cast_to_number(vm.stack.pop())
    if (n < 0) or (n >= len(vm.stack) ):
        raise Exception("OP_PICK: N is out of range")
    elm = vm.stack[-n-1]
    vm.stack.append(elm)    

示例#4

def arithmetic_op(vm, func, arity):
    if len(vm.stack) < arity:
        raise Exception("Not enought arguments")
    args = [cast_to_number(vm.stack.pop()) for _ in range(arity)]
    result = func(*reversed(args))
    vm.stack.append(valtype_from_number(result))

示例#5

文件： arithmetic.py 项目： sirk390/coinpy

def arithmetic_op(vm, func, arity):
    if len(vm.stack) < arity:
        raise Exception("Not enought arguments")
    args = [cast_to_number(vm.stack.pop()) for _ in range(arity)]
    result = func(*reversed(args))
    vm.stack.append(valtype_from_number(result))