Repository navigation
Expand file tree
/
Copy pathabstract_.rs
More file actions
303 lines (267 loc) · 8.6 KB
/
Copy pathabstract_.rs
File metadata and controls
303 lines (267 loc) · 8.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
use crate::util::CStrExt;
use crate::{PyObject, pystate::with_vm};
use alloc::slice;
use core::ffi::{c_char, c_int};
pub use iter::*;
pub use mapping::*;
pub use number::*;
use rustpython_vm::builtins::{PyDict, PyStr, PyTuple};
use rustpython_vm::function::{FuncArgs, KwArgs, PosArgs};
use rustpython_vm::{AsObject, Py, PyObjectRef, PyResult, VirtualMachine};
pub use sequence::*;
mod iter;
mod mapping;
mod number;
mod sequence;
const PY_VECTORCALL_ARGUMENTS_OFFSET: usize = 1usize << (usize::BITS as usize - 1);
fn tuple_to_args(tuple: &Py<PyTuple>) -> PosArgs {
tuple.iter().cloned().collect::<Vec<_>>().into()
}
fn dict_to_kwargs(vm: &VirtualMachine, dict: &Py<PyDict>) -> PyResult<KwArgs> {
dict.items_vec()
.into_iter()
.map(|(key, value)| {
let key = key
.downcast_ref::<PyStr>()
.map(|s| s.to_string())
.ok_or_else(|| vm.new_type_error("keywords must be strings"))?;
Ok((key, value))
})
.collect::<PyResult<_>>()
.map(KwArgs::new)
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_Call(
callable: *mut PyObject,
args: *mut PyObject,
kwargs: *mut PyObject,
) -> *mut PyObject {
with_vm(|vm| {
let callable = unsafe { &*callable };
let args = tuple_to_args(unsafe { &*args }.try_downcast_ref::<PyTuple>(vm)?);
let kwargs: Option<KwArgs> = unsafe { kwargs.as_ref() }
.map(|kwargs| dict_to_kwargs(vm, kwargs.try_downcast_ref::<PyDict>(vm)?))
.transpose()?;
callable.call_with_args(FuncArgs::new(args, kwargs.unwrap_or_default()), vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_CallNoArgs(callable: *mut PyObject) -> *mut PyObject {
with_vm(|vm| unsafe { &*callable }.call((), vm))
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_CallObject(
callable: *mut PyObject,
args: *mut PyObject,
) -> *mut PyObject {
with_vm(|vm| {
let callable = unsafe { &*callable };
if let Some(args) = unsafe { args.as_ref() } {
callable.call(tuple_to_args(args.try_downcast_ref::<PyTuple>(vm)?), vm)
} else {
callable.call((), vm)
}
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_Vectorcall(
callable: *mut PyObject,
args: *const *mut PyObject,
nargsf: usize,
kwnames: *mut PyObject,
) -> *mut PyObject {
with_vm(|vm| {
let num_positional_args = nargsf & !PY_VECTORCALL_ARGUMENTS_OFFSET;
let kwnames: Option<&[PyObjectRef]> = unsafe {
kwnames
.as_ref()
.map(|tuple| Ok(&***tuple.try_downcast_ref::<PyTuple>(vm)?))
.transpose()?
};
let args_len = num_positional_args + kwnames.map_or(0, <[PyObjectRef]>::len);
let args = if args_len == 0 {
Vec::new()
} else {
unsafe { slice::from_raw_parts(args, args_len) }
.iter()
.map(|arg| unsafe { &**arg }.to_owned())
.collect::<Vec<_>>()
};
let callable = unsafe { &*callable };
callable.vectorcall(args, num_positional_args, kwnames, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_VectorcallMethod(
name: *mut PyObject,
args: *const *mut PyObject,
nargsf: usize,
kwnames: *mut PyObject,
) -> *mut PyObject {
with_vm(|vm| {
let args_len = nargsf & !PY_VECTORCALL_ARGUMENTS_OFFSET;
if args_len == 0 {
return Err(vm.new_system_error("PyObject_VectorcallMethod called with no receiver"));
}
let (receiver, args) = unsafe { slice::from_raw_parts(args, args_len) }
.split_first()
.expect("args_len > 0 should guarantee a receiver");
let method_name = unsafe { (&*name).try_downcast_ref::<PyStr>(vm)? };
let callable = unsafe { (&**receiver).get_attr(method_name, vm)? };
Ok(unsafe {
PyObject_Vectorcall(
callable.as_object().as_raw().cast_mut(),
args.as_ptr(),
nargsf - 1,
kwnames,
)
})
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyVectorcall_Call(
callable: *mut PyObject,
tuple: *mut PyObject,
kwargs: *mut PyObject,
) -> *mut PyObject {
with_vm(|vm| {
let callable = unsafe { &*callable };
let tuple = unsafe { &*tuple }.try_downcast_ref::<PyTuple>(vm)?;
let mut args = tuple.iter().cloned().collect::<Vec<_>>();
let num_positional_args = args.len();
let mut kwnames = Vec::new();
if let Some(kwargs) = unsafe { kwargs.as_ref() } {
let kwargs = kwargs.try_downcast_ref::<PyDict>(vm)?;
for (key, value) in kwargs.items_vec() {
let key = key
.downcast_ref::<PyStr>()
.map(ToOwned::to_owned)
.ok_or_else(|| vm.new_type_error("keywords must be strings"))?;
kwnames.push(key.into());
args.push(value);
}
}
let kwnames = if kwnames.is_empty() {
None
} else {
Some(kwnames.as_slice())
};
callable.vectorcall(args, num_positional_args, kwnames, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_GetItem(obj: *mut PyObject, key: *mut PyObject) -> *mut PyObject {
with_vm(|vm| {
let obj = unsafe { &*obj };
let key = unsafe { &*key };
obj.get_item(key, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_SetItem(
obj: *mut PyObject,
key: *mut PyObject,
value: *mut PyObject,
) -> c_int {
with_vm(|vm| {
let obj = unsafe { &*obj };
let key = unsafe { &*key };
let value = unsafe { &*value }.to_owned();
obj.set_item(key, value, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_DelItem(obj: *mut PyObject, key: *mut PyObject) -> c_int {
with_vm(|vm| {
let obj = unsafe { &*obj };
let key = unsafe { &*key };
obj.del_item(key, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_DelItemString(obj: *mut PyObject, key: *const c_char) -> c_int {
with_vm(|vm| {
let obj = unsafe { &*obj };
let key = unsafe { key.try_as_str(vm) }?;
obj.del_item(key, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_Format(
obj: *mut PyObject,
format_spec: *mut PyObject,
) -> *mut PyObject {
with_vm(|vm| {
let obj = unsafe { &*obj };
let spec = unsafe { format_spec.as_ref() }
.map(|spec| spec.try_downcast_ref::<PyStr>(vm))
.transpose()?
.unwrap_or_else(|| vm.ctx.empty_str);
vm.format(obj, spec.to_owned())
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_IsSubclass(derived: *mut PyObject, cls: *mut PyObject) -> c_int {
with_vm(|vm| {
let derived = unsafe { &*derived };
let cls = unsafe { &*cls };
derived.is_subclass(cls, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_IsInstance(inst: *mut PyObject, cls: *mut PyObject) -> c_int {
with_vm(|vm| {
let inst = unsafe { &*inst };
let cls = unsafe { &*cls };
inst.is_instance(cls, vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_Size(obj: *mut PyObject) -> isize {
with_vm(|vm| {
let obj = unsafe { &*obj };
obj.length(vm)
})
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_Length(obj: *mut PyObject) -> isize {
unsafe { PyObject_Size(obj) }
}
#[unsafe(no_mangle)]
pub unsafe extern "C" fn PyObject_Type(obj: *mut PyObject) -> *mut PyObject {
with_vm(|_vm| unsafe { &*obj }.obj_type())
}
#[cfg(test)]
mod tests {
use pyo3::prelude::*;
use pyo3::types::{PyDict, PyString};
#[test]
fn call_method1() {
Python::attach(|py| {
let string = PyString::new(py, "Hello, World!");
assert!(
string
.call_method1("endswith", ("!",))
.unwrap()
.is_truthy()
.unwrap()
);
})
}
#[test]
fn object_set_get_del_item() {
Python::attach(|py| {
let obj = PyDict::new(py).into_any();
obj.set_item("key", "value").unwrap();
assert_eq!(
obj.get_item("key")
.unwrap()
.cast_into::<PyString>()
.unwrap(),
"value"
);
obj.del_item("key").unwrap();
assert!(obj.get_item("key").is_err());
})
}
}