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allow import from file

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This commit is contained in:
blueloveTH 2023-03-19 15:05:55 +08:00
parent f0b66c43e6
commit b69bef0912
2 changed files with 32 additions and 7 deletions
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19
src/ceval.h
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@ -5,6 +5,8 @@
namespace pkpy{
Str _read_file_cwd(const Str& name, bool* ok);
PyVar VM::run_frame(Frame* frame){
while(frame->has_next_bytecode()){
const Bytecode& byte = frame->next_bytecode();
@ -298,18 +300,21 @@ PyVar VM::run_frame(Frame* frame){
StrName name = frame->co->names[byte.arg].first;
PyVar* ext_mod = _modules.try_get(name);
if(ext_mod == nullptr){
Str source;
auto it2 = _lazy_modules.find(name);
if(it2 == _lazy_modules.end()){
_error("ImportError", "module " + name.str().escape(true) + " not found");
bool ok = false;
source = _read_file_cwd(name.str() + ".py", &ok);
if(!ok) _error("ImportError", "module " + name.str().escape(true) + " not found");
}else{
const Str& source = it2->second;
CodeObject_ code = compile(source, name.str(), EXEC_MODE);
PyVar new_mod = new_module(name);
_exec(code, new_mod);
frame->push(new_mod);
source = it2->second;
_lazy_modules.erase(it2);
new_mod->attr()._try_perfect_rehash();
}
CodeObject_ code = compile(source, name.str(), EXEC_MODE);
PyVar new_mod = new_module(name);
_exec(code, new_mod);
frame->push(new_mod);
new_mod->attr()._try_perfect_rehash();
}else{
frame->push(*ext_mod);
}

20
src/io.h
View File

@ -10,6 +10,20 @@
namespace pkpy{
Str _read_file_cwd(const Str& name, bool* ok){
std::filesystem::path path(name.c_str());
bool exists = std::filesystem::exists(path);
if(!exists){
*ok = false;
return Str();
}
std::ifstream ifs(path);
std::string buffer((std::istreambuf_iterator<char>(ifs)), (std::istreambuf_iterator<char>()));
ifs.close();
*ok = true;
return Str(std::move(buffer));
}
struct FileIO {
PY_CLASS(FileIO, io, FileIO)
@ -138,6 +152,12 @@ void add_module_os(VM* vm){
namespace pkpy{
void add_module_io(VM* vm){}
void add_module_os(VM* vm){}
Str _read_file_cwd(const Str& name, bool* ok){
*ok = false;
return Str();
}
} // namespace pkpy
#endif