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Update cffi.h
This commit is contained in:
blueloveTH 2023-02-26 01:38:20 +08:00
parent 588e58c161
commit 27ad4a047d
2 changed files with 77 additions and 82 deletions
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157
src/cffi.h
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@ -5,22 +5,51 @@
struct CType{
PY_CLASS(c, type)
Str name;
int size;
CType(const Str& name, int size) : name(name), size(size) {}
const char* name; // must be a literal
int size;
constexpr CType(const char name[], int size) : name(name), size(size) {}
static void _register(VM* vm, PyVar mod, PyVar type){
vm->bind_static_method<-1>(type, "__new__", CPP_NOT_IMPLEMENTED());
vm->bind_method<0>(type, "__repr__", [](VM* vm, pkpy::Args& args) {
CType& self = vm->py_cast<CType>(args[0]);
StrStream ss;
ss << "<c.type '" << self.name << "'>";
return vm->PyStr(ss.str());
});
}
};
constexpr CType kCTypes[] = {
CType("int8", 1), CType("int16", 2), CType("int32", 4), CType("int64", 8),
CType("uint8", 1), CType("uint16", 2), CType("uint32", 4), CType("uint64", 8),
CType("float32", 4), CType("float64", 8), CType("bool8", 1), CType("void", 0),
};
const int kCTypeCount = sizeof(kCTypes) / sizeof(CType);
constexpr int ctype(const char name[]){
for(int k=0; k<kCTypeCount; k++){
const char* i = kCTypes[k].name;
const char* j = name;
while(*i && *j && *i == *j) { i++; j++;}
if(*i == *j) return k;
}
UNREACHABLE();
}
constexpr CType ctype_t(const char name[]){
return kCTypes[ctype(name)];
}
struct Pointer{
PY_CLASS(c, ptr)
void* ptr;
CType ctype;
CType _ctype;
Pointer(void* ptr, CType ctype) : ptr(ptr), ctype(ctype) {}
Pointer(void* ptr, CType ctype) : ptr(ptr), _ctype(ctype) {}
static void _register(VM* vm, PyVar mod, PyVar type){
vm->bind_static_method<-1>(type, "__new__", CPP_NOT_IMPLEMENTED());
@ -28,78 +57,47 @@ struct Pointer{
vm->bind_method<0>(type, "__repr__", [](VM* vm, pkpy::Args& args) {
Pointer& self = vm->py_cast<Pointer>(args[0]);
StrStream ss;
ss << "<" << self.ctype.name << "* at " << std::hex << self.ptr << ">";
ss << "<" << self._ctype.name << "* at " << std::hex << self.ptr << ">";
return vm->PyStr(ss.str());
});
vm->bind_method<1>(type, "cast", [](VM* vm, pkpy::Args& args) {
Pointer& self = vm->py_cast<Pointer>(args[0]);
CType& ctype = vm->py_cast<CType>(args[1]);
return vm->new_object<Pointer>(self.ptr, ctype);
});
vm->bind_method<1>(type, "__getitem__", [](VM* vm, pkpy::Args& args) {
Pointer& self = vm->py_cast<Pointer>(args[0]);
i64 index = vm->PyInt_AS_C(args[1]);
if(self.ctype.name == "char"){
return vm->PyInt(((char*)self.ptr)[index]);
}else if(self.ctype.name == "int8"){
return vm->PyInt(((int8_t*)self.ptr)[index]);
}else if(self.ctype.name == "int16"){
return vm->PyInt(((int16_t*)self.ptr)[index]);
}else if(self.ctype.name == "int32"){
return vm->PyInt(((int*)self.ptr)[index]);
}else if(self.ctype.name == "int64"){
return vm->PyInt(((int64_t*)self.ptr)[index]);
}else if(self.ctype.name == "uint8"){
return vm->PyInt(((uint8_t*)self.ptr)[index]);
}else if(self.ctype.name == "uint16"){
return vm->PyInt(((uint16_t*)self.ptr)[index]);
}else if(self.ctype.name == "uint32"){
return vm->PyInt(((uint32_t*)self.ptr)[index]);
}else if(self.ctype.name == "uint64"){
return vm->PyInt(((uint64_t*)self.ptr)[index]);
}else if(self.ctype.name == "float"){
return vm->PyFloat(((float*)self.ptr)[index]);
}else if(self.ctype.name == "double"){
return vm->PyFloat(((double*)self.ptr)[index]);
}else if(self.ctype.name == "bool"){
return vm->PyBool(((bool*)self.ptr)[index]);
}else{
vm->TypeError("unsupported type");
return vm->None;
switch(ctype(self._ctype.name)){ // TODO: optimize
case ctype("int8"): return vm->PyInt(((int8_t*)self.ptr)[index]);
case ctype("int16"): return vm->PyInt(((int16_t*)self.ptr)[index]);
case ctype("int32"): return vm->PyInt(((int32_t*)self.ptr)[index]);
case ctype("int64"): return vm->PyInt(((int64_t*)self.ptr)[index]);
case ctype("uint8"): return vm->PyInt(((uint8_t*)self.ptr)[index]);
case ctype("uint16"): return vm->PyInt(((uint16_t*)self.ptr)[index]);
case ctype("uint32"): return vm->PyInt(((uint32_t*)self.ptr)[index]);
case ctype("uint64"): return vm->PyInt(((uint64_t*)self.ptr)[index]);
case ctype("float32"): return vm->PyFloat(((float*)self.ptr)[index]);
case ctype("float64"): return vm->PyFloat(((double*)self.ptr)[index]);
case ctype("bool8"): return vm->PyBool(((bool*)self.ptr)[index]);
case ctype("void"): vm->TypeError("cannot index void*");
default: vm->TypeError("unsupported type");
}
return vm->None;
});
vm->bind_method<2>(type, "__setitem__", [](VM* vm, pkpy::Args& args) {
Pointer& self = vm->py_cast<Pointer>(args[0]);
i64 index = vm->PyInt_AS_C(args[1]);
if(self.ctype.name == "char"){
((char*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "int8"){
((int8_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "int16"){
((int16_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "int32"){
((int*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "int64"){
((int64_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "uint8"){
((uint8_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "uint16"){
((uint16_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "uint32"){
((uint32_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "uint64"){
((uint64_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]);
}else if(self.ctype.name == "float"){
((float*)self.ptr)[index] = vm->PyFloat_AS_C(args[2]);
}else if(self.ctype.name == "double"){
((double*)self.ptr)[index] = vm->PyFloat_AS_C(args[2]);
}else if(self.ctype.name == "bool"){
((bool*)self.ptr)[index] = vm->PyBool_AS_C(args[2]);
}else{
vm->TypeError("unsupported type");
switch(ctype(self._ctype.name)){ // TODO: optimize
case ctype("int8"): ((int8_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("int16"): ((int16_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("int32"): ((int32_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("int64"): ((int64_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("uint8"): ((uint8_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("uint16"): ((uint16_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("uint32"): ((uint32_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("uint64"): ((uint64_t*)self.ptr)[index] = vm->PyInt_AS_C(args[2]); break;
case ctype("float32"): ((float*)self.ptr)[index] = vm->PyFloat_AS_C(args[2]); break;
case ctype("float64"): ((double*)self.ptr)[index] = vm->PyFloat_AS_C(args[2]); break;
case ctype("bool8"): ((bool*)self.ptr)[index] = vm->PyBool_AS_C(args[2]); break;
case ctype("void"): vm->TypeError("cannot index void*");
}
return vm->None;
});
@ -114,24 +112,21 @@ struct Pointer{
void add_module_c(VM* vm){
PyVar mod = vm->new_module("c");
PyVar ptr_t = vm->register_class<Pointer>(mod);
PyVar ctype_t = vm->register_class<CType>(mod);
vm->register_class<CType>(mod);
vm->setattr(mod, "char", vm->new_object<CType>("char", 1));
vm->setattr(mod, "int8", vm->new_object<CType>("int8", 1));
vm->setattr(mod, "int16", vm->new_object<CType>("int16", 2));
vm->setattr(mod, "int32", vm->new_object<CType>("int32", 4));
vm->setattr(mod, "int64", vm->new_object<CType>("int64", 8));
vm->setattr(mod, "uint8", vm->new_object<CType>("uint8", 1));
vm->setattr(mod, "uint16", vm->new_object<CType>("uint16", 2));
vm->setattr(mod, "uint32", vm->new_object<CType>("uint32", 4));
vm->setattr(mod, "uint64", vm->new_object<CType>("uint64", 8));
vm->setattr(mod, "float", vm->new_object<CType>("float", 4));
vm->setattr(mod, "double", vm->new_object<CType>("double", 8));
vm->setattr(mod, "bool", vm->new_object<CType>("bool", 1));
for(int i=0; i<kCTypeCount; i++){
vm->setattr(mod, kCTypes[i].name, vm->new_object<CType>(kCTypes[i]));
}
vm->bind_func<1>(mod, "malloc", [](VM* vm, pkpy::Args& args) {
i64 size = vm->PyInt_AS_C(args[0]);
return vm->new_object<Pointer>(malloc(size), CType("char", 1));
return vm->new_object<Pointer>(malloc(size), ctype_t("void"));
});
vm->bind_func<2>(mod, "cast", [](VM* vm, pkpy::Args& args) {
Pointer& self = vm->py_cast<Pointer>(args[0]);
CType& ctype = vm->py_cast<CType>(args[1]);
return vm->new_object<Pointer>(self.ptr, ctype);
});
vm->bind_func<1>(mod, "free", [](VM* vm, pkpy::Args& args) {
@ -164,10 +159,10 @@ void add_module_c(VM* vm){
vm->bind_func<1>(mod, "strdup", [ptr_t](VM* vm, pkpy::Args& args) {
if(is_type(args[0], vm->tp_str)){
const Str& s = vm->PyStr_AS_C(args[0]);
return vm->new_object<Pointer>(strdup(s.c_str()), CType("char", 1));
return vm->new_object<Pointer>(strdup(s.c_str()), ctype_t("char"));
}else if(is_type(args[0], OBJ_GET(Type, ptr_t))){
Pointer& p = vm->py_cast<Pointer>(args[0]);
return vm->new_object<Pointer>(strdup(p.cast<char*>()), CType("char", 1));
return vm->new_object<Pointer>(strdup(p.cast<char*>()), ctype_t("char"));
}else{
vm->TypeError("strdup() argument must be 'str' or 'c.ptr'");
return vm->None;

2
src/parser.h
View File

@ -24,7 +24,7 @@ constexpr const char* kTokens[] = {
const TokenIndex kTokenCount = sizeof(kTokens) / sizeof(kTokens[0]);
constexpr TokenIndex TK(const char* const token) {
constexpr TokenIndex TK(const char token[]) {
for(int k=0; k<kTokenCount; k++){
const char* i = kTokens[k];
const char* j = token;