# ------------------------------------------------ '''source code in cffi.cpp : 57: 245: vm->bind_method<0>(type, "__repr__", [](VM* vm, ArgsView args){ #####: 246: C99ReflType& self = _CAST(C99ReflType&, args[0]); #####: 247: return VAR(""); #####: 248: }); #####: 249: 57: 250: vm->bind_method<0>(type, "name", [](VM* vm, ArgsView args){ #####: 251: C99ReflType& self = _CAST(C99ReflType&, args[0]); #####: 252: return VAR(self.name); #####: 253: }); ''' # test : import c c_int = c.refl("int") assert c_int.name() == "int" assert c_int.__repr__() == '' # ------------------------------------------------ '''source code in cffi.cpp : 57: 180: vm->bind__eq__(PK_OBJ_GET(Type, type), [](VM* vm, PyObject* lhs, PyObject* rhs){ #####: 181: C99Struct& self = _CAST(C99Struct&, lhs); #####: 182: if(!is_non_tagged_type(rhs, C99Struct::_type(vm))) return vm->NotImplemented; #####: 183: C99Struct& other = _CAST(C99Struct&, rhs); #####: 184: bool ok = self.size == other.size && memcmp(self.p, other.p, self.size) == 0; #####: 185: return VAR(ok); #####: 186: }); -: 187: ''' # test : import c c_int_1 = c.refl("int") c_struct_1 = c_int_1() assert (c_int_1() == c_int_1()) assert (c_struct_1 == c_struct_1) == True # ------------------------------------------------ '''source code in cffi.cpp : 114: 8: vm->bind_func<1>(type, "from_hex", [](VM* vm, ArgsView args){ #####: 9: std::string s = CAST(Str&, args[0]).str(); #####: 10: size_t size; #####: 11: intptr_t ptr = std::stoll(s, &size, 16); #####: 12: if(size != s.size()) vm->ValueError("invalid literal for void_p(): " + s); #####: 13: return VAR_T(VoidP, (void*)ptr); #####: 14: }); 114: 15: vm->bind_method<0>(type, "hex", [](VM* vm, ArgsView args){ #####: 16: VoidP& self = _CAST(VoidP&, args[0]); #####: 17: return VAR(self.hex()); #####: 18: }); -: 19: ''' # test : import c assert c.void_p.from_hex('0x2568b60').hex() == '0x2568b60' # ------------------------------------------------ '''source code in cffi.cpp : 114: 70: vm->bind__add__(PK_OBJ_GET(Type, type), [](VM* vm, PyObject* lhs, PyObject* rhs){ #####: 71: VoidP& self = _CAST(VoidP&, lhs); #####: 72: i64 offset = CAST(i64, rhs); #####: 73: return VAR_T(VoidP, (char*)self.ptr + offset); -: 74: }); -: 75: 114: 76: vm->bind__sub__(PK_OBJ_GET(Type, type), [](VM* vm, PyObject* lhs, PyObject* rhs){ #####: 77: VoidP& self = _CAST(VoidP&, lhs); #####: 78: i64 offset = CAST(i64, rhs); #####: 79: return VAR_T(VoidP, (char*)self.ptr - offset); -: 80: }); -: 81: -: 19: ''' # test : class HexAddress: def __init__(self, address): if not address.startswith("0x"): # 确保地址以0x开头 raise ValueError("Address should start with '0x'.") self.address = address[2:] # 去除0x前缀，并保存十六进制字符串 def __str__(self): return "0x" + self.address def __add__(self, other): if isinstance(other, int): return HexAddress(hex(int(self.address, 16) + other)) # 将字符串地址转为整数进行运算 elif isinstance(other, HexAddress): return HexAddress(hex(int(self.address, 16) + int(other.address, 16))) # 将字符串地址转为整数进行运算 else: raise TypeError("Unsupported operand type for +: HexAddress and {}".format(type(other))) def __sub__(self, other): if isinstance(other, int): return HexAddress(hex(int(self.address, 16) - other)) # 将字符串地址转为整数进行运算 elif isinstance(other, HexAddress): return HexAddress(hex(int(self.address, 16) - int(other.address, 16))) # 将字符串地址转为整数进行运算 else: raise TypeError("Unsupported operand type for -: HexAddress and {}".format(type(other))) import c c_void_1 = c.malloc(8) assert (c_void_1 + 8).hex() == c.void_p.from_hex(str(HexAddress(c_void_1.hex()) + 8)).hex() assert (c_void_1 - 8).hex() == c.void_p.from_hex(str(HexAddress(c_void_1.hex()) - 8)).hex() # ------------------------------------------------ '''source code in cffi.cpp : -: 107: 114: 108: vm->bind_method<1>(type, "read_bytes", [](VM* vm, ArgsView args){ #####: 109: VoidP& self = _CAST(VoidP&, args[0]); #####: 110: i64 size = CAST(i64, args[1]); #####: 111: std::vector buffer(size); #####: 112: memcpy(buffer.data(), self.ptr, size); #####: 113: return VAR(Bytes(std::move(buffer))); #####: 114: }); -: 115: 114: 116: vm->bind_method<1>(type, "write_bytes", [](VM* vm, ArgsView args){ #####: 117: VoidP& self = _CAST(VoidP&, args[0]); #####: 118: Bytes& bytes = CAST(Bytes&, args[1]); #####: 119: memcpy(self.ptr, bytes.data(), bytes.size()); #####: 120: return vm->None; -: 121: }); -: 122: ''' # test : import c # 此处测试并不完全 c_void_1 = c.malloc(8) c_void_1.read_bytes(5) c_void_1.write_bytes(c_void_1.read_bytes(5)) # ------------------------------------------------ '''source code in cffi.cpp : 57: 126: void C99Struct::_register(VM* vm, PyObject* mod, PyObject* type){ 114: 127: vm->bind_constructor<-1>(type, [](VM* vm, ArgsView args){ #####: 128: if(args.size() == 1+1){ #####: 129: if(is_int(args[1])){ #####: 130: int size = _CAST(int, args[1]); #####: 131: return VAR_T(C99Struct, size); #####: 132: } #####: 133: if(is_non_tagged_type(args[1], vm->tp_str)){ #####: 134: const Str& s = _CAST(Str&, args[1]); #####: 135: return VAR_T(C99Struct, (void*)s.data, s.size); #####: 136: } #####: 137: if(is_non_tagged_type(args[1], vm->tp_bytes)){ #####: 138: const Bytes& b = _CAST(Bytes&, args[1]); #####: 139: return VAR_T(C99Struct, (void*)b.data(), b.size()); #####: 140: } #####: 141: vm->TypeError("expected int, str or bytes"); #####: 142: return vm->None; -: 143: } #####: 144: if(args.size() == 1+2){ #####: 145: void* p = CAST(void*, args[1]); #####: 146: int size = CAST(int, args[2]); #####: 147: return VAR_T(C99Struct, p, size); #####: 148: } #####: 149: vm->TypeError("expected 1 or 2 arguments"); #####: 150: return vm->None; #####: 151: }); ''' # test : import c my_struct1 = c.struct(16) c_void_1 = c.malloc(8) my_struct2 = c.struct(c_void_1, 32) data_str = "Hello, World!" my_struct3 = c.struct(data_str) data_bytes = bytes([1,2,3]) my_struct4 = c.struct(data_bytes) try: c.struct(True) raise Exception('c.struct 的构造方法未能触发 TypeError("expected int, str or bytes")') except TypeError: pass try: c.struct(1,2,3) raise Exception('c.struct 的构造方法未能触发 TypeError("expected 1 or 2 arguments")') except TypeError: pass # ------------------------------------------------ '''source code in cffi.cpp : 114: 158: vm->bind_method<0>(type, "size", [](VM* vm, ArgsView args){ #####: 159: C99Struct& self = _CAST(C99Struct&, args[0]); #####: 160: return VAR(self.size); -: 161: }); -: 162: 114: 163: vm->bind_method<0>(type, "copy", [](VM* vm, ArgsView args){ #####: 164: const C99Struct& self = _CAST(C99Struct&, args[0]); #####: 165: return VAR_T(C99Struct, self); #####: 166: }); -: 167: 114: 168: vm->bind_method<0>(type, "to_string", [](VM* vm, ArgsView args){ #####: 169: C99Struct& self = _CAST(C99Struct&, args[0]); #####: 170: return VAR(Str(self.p, self.size)); #####: 171: }); -: 172: 114: 173: vm->bind_method<0>(type, "to_bytes", [](VM* vm, ArgsView args){ #####: 174: C99Struct& self = _CAST(C99Struct&, args[0]); #####: 175: std::vector buffer(self.size); #####: 176: memcpy(buffer.data(), self.p, self.size); #####: 177: return VAR(Bytes(std::move(buffer))); #####: 178: }); ''' # test : import c my_struct1 = c.struct(16) assert my_struct1.size() == 16 # 对 c.struct 的 copy 方法的测试不完全 assert my_struct1.copy().size() == 16 data_str = "Hello, World!" my_struct3 = c.struct(data_str) assert my_struct3.to_string() == data_str data_bytes = bytes([1,2,3]) my_struct4 = c.struct(data_bytes) assert my_struct4.to_bytes() == data_bytes # ------------------------------------------------ '''source code in cffi.cpp : 114: 222: vm->bind_method<1>(type, "read_struct", [](VM* vm, ArgsView args){ #####: 223: VoidP& self = _CAST(VoidP&, args[0]); #####: 224: const Str& type = CAST(Str&, args[1]); #####: 225: int size = c99_sizeof(vm, type); #####: 226: return VAR_T(C99Struct, self.ptr, size); #####: 227: }); -: 228: 114: 229: vm->bind_method<1>(type, "write_struct", [](VM* vm, ArgsView args){ #####: 230: VoidP& self = _CAST(VoidP&, args[0]); #####: 231: C99Struct& other = CAST(C99Struct&, args[1]); #####: 232: memcpy(self.ptr, other.p, other.size); #####: 233: return vm->None; -: 234: }); 57: 235: } ''' # test : import c # 此处测试并不完全 c_void_1 = c.malloc(8) my_struct1 = c.struct(16) c_void_1.read_struct('long') c_void_1.write_struct(my_struct1)