mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-21 12:00:18 +00:00
43 lines
1.4 KiB
Markdown
43 lines
1.4 KiB
Markdown
---
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icon: dot
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label: 'Interop with PyObject'
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order: 90
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---
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In pkpy, any python object is represented by a `PyObject*`.
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There are 3 macros for you to do convert.
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+ `VAR(...)`,
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create a `PyObject*` from a C type
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+ `CAST(T, ...)`,
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cast a `PyObject*` to a C type
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+ `_CAST(T, ...)`,
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cast a `PyObject*` to a C type, without type check
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```cpp
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PyObject* x = VAR(12); // cast a C int to PyObject*
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int y = CAST(int, x); // cast a PyObject* to C int
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PyObject* i = VAR("abc");
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std::cout << CAST(Str, i); // abc
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```
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### Types
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| python type | C type | note |
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| ------------ | ---------------- | ---------------------- |
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| `int` | `i64` | 62 bits integer |
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| `float` | `f64` | 62 bits floating point |
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| `str` | `pkpy::Str` | |
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| `bool` | `bool` | |
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| `list` | `pkpy::List` | |
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| `tuple` | `pkpy::Tuple` | |
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| `function` | `pkpy::Function` | |
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| ... | ... | ... |
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### Type check
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+ `bool is_type(PyObject* obj, Type type)`
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+ `bool is_non_tagged_type(PyObject* obj, Type type)`
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+ `void VM::check_type(PyObject* obj, Type type)` throws `TypeError` on failure
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+ `void VM::check_non_tagged_type(PyObject* obj, Type type)` throws `TypeError` on failure |