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@ -163,13 +163,15 @@ def add(a, b):
return a + b return a + b
``` ```
Call a function
```cpp ```cpp
PyObject* f_add = vm->eval("add"); PyObject* f_add = vm->eval("add");
PyObject* ret = vm->call(f_add, VAR(1), VAR(2)); PyObject* ret = vm->call(f_add, VAR(1), VAR(2));
std::cout << CAST(i64, ret); // 3 std::cout << CAST(i64, ret); // 3
``` ```
## Call python methods Call a method
```cpp ```cpp
PyObject* obj = vm->exec("MyClass(1, 2)"); PyObject* obj = vm->exec("MyClass(1, 2)");
@ -177,7 +179,7 @@ PyObject* ret = vm->call_method(obj, "sum");
std::cout << CAST(i64, ret); // 3 std::cout << CAST(i64, ret); // 3
``` ```
## Cache python names Cache the name of a function or method to avoid string-based lookup
```cpp ```cpp
// cache the name "add" to avoid string-based lookup // cache the name "add" to avoid string-based lookup
@ -187,6 +189,8 @@ PyObject* ret = vm->call_method(obj, m_sum);
## Bind native functions ## Bind native functions
Bind a native function
```cpp ```cpp
vm->bind(obj, "add(a: int, b: int) -> int", [](VM* vm, ArgsView args){ vm->bind(obj, "add(a: int, b: int) -> int", [](VM* vm, ArgsView args){
int a = CAST(int, args[0]); int a = CAST(int, args[0]);
@ -194,7 +198,8 @@ vm->bind(obj, "add(a: int, b: int) -> int", [](VM* vm, ArgsView args){
return VAR(a + b); return VAR(a + b);
}); });
// or you can provide a docstring Bind a native function with docstring
vm->bind(obj, vm->bind(obj,
"add(a: int, b: int) -> int", "add(a: int, b: int) -> int",
"add two integers", [](VM* vm, ArgsView args){ "add two integers", [](VM* vm, ArgsView args){
@ -204,7 +209,7 @@ vm->bind(obj,
}); });
``` ```
## Bind native properties Bind a property
```cpp ```cpp
// getter and setter of property `x` // getter and setter of property `x`
@ -218,4 +223,22 @@ vm->bind(obj,
self.x = CAST(int, args[1]); self.x = CAST(int, args[1]);
return vm->None; return vm->None;
}); });
``` ```
## Modules
Create a source module
```cpp
vm->_lazy_modules["test"] = "pi = 3.14";
// import test
// print(test.pi) # 3.14
```
Create a native module
```cpp
PyObject* mod = vm->new_module("test");
vm->setattr(mod, "pi", VAR(3.14));
```