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Copy pathfloatobject.rs
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73 lines (63 loc) · 1.95 KB
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use crate::object::define_py_check;
use crate::util::FfiPtrExt;
use crate::{PyObject, pystate::with_vm};
use core::ffi::c_double;
use rustpython_vm::AsObject;
use rustpython_vm::builtins::PyFloat;
define_py_check!(fn PyFloat_Check, types.float_type);
define_py_check!(exact fn PyFloat_CheckExact, types.float_type);
#[unsafe(no_mangle)]
pub extern "C" fn PyFloat_FromDouble(value: c_double) -> *mut PyObject {
with_vm(|vm| vm.ctx.new_float(value))
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyFloat_AsDouble(obj: *mut PyObject) -> c_double {
with_vm(|vm| {
let obj_ref = unsafe { obj.assume_borrowed() };
let float_obj = obj_ref
.to_owned()
.try_downcast::<PyFloat>(vm)
.or_else(|_| obj_ref.try_float(vm))?;
Ok(float_obj.to_f64())
})
}
#[unsafe(no_mangle)]
pub extern "C" fn PyFloat_GetMax() -> c_double {
c_double::MAX
}
#[unsafe(no_mangle)]
pub extern "C" fn PyFloat_GetMin() -> c_double {
c_double::MIN_POSITIVE
}
#[unsafe(no_mangle)]
pub extern "C" fn PyFloat_GetInfo() -> *mut PyObject {
with_vm(|vm| {
vm.sys_module
.as_object()
.get_attr("float_info", vm)
.map(|obj| obj.into_raw().as_ptr())
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyFloat_FromString(obj: *mut PyObject) -> *mut PyObject {
with_vm(|vm| {
let obj = unsafe { obj.assume_borrowed_or_opt() }
.ok_or_else(|| vm.new_type_error("float() argument must be a string or a number"))?;
let float = rustpython_vm::builtins::parse_float_from_string(obj, vm)?;
Ok(vm.ctx.new_float(float))
})
}
#[cfg(test)]
mod tests {
use core::f64::consts::PI;
use pyo3::prelude::*;
use pyo3::types::PyFloat;
#[test]
fn py_float() {
Python::attach(|py| {
let pi = PyFloat::new(py, PI);
assert!(pi.is_instance_of::<PyFloat>());
assert_eq!(pi.extract::<f64>().unwrap(), PI);
})
}
}