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gh-103763: Implement PEP 695 (#103764)

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This implements PEP 695, Type Parameter Syntax. It adds support for:

- Generic functions (def func[T](): ...)
- Generic classes (class X[T](): ...)
- Type aliases (type X = ...)
- New scoping when the new syntax is used within a class body
- Compiler and interpreter changes to support the new syntax and scoping rules 

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Co-authored-by: Eric Traut <eric@traut.com>
Co-authored-by: Larry Hastings <larry@hastings.org>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
This commit is contained in:
Jelle Zijlstra 2023-05-15 20:36:23 -07:00 • committed by GitHub
parent fdafdc235e
commit 24d8b88420
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56 changed files with 11405 additions and 5469 deletions
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34
Python/intrinsics.c
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@ -3,10 +3,12 @@
#include "Python.h"
#include "pycore_frame.h"
#include "pycore_function.h"
#include "pycore_runtime.h"
#include "pycore_global_objects.h"
#include "pycore_intrinsics.h"
#include "pycore_pyerrors.h"
#include "pycore_typevarobject.h"
/******** Unary functions ********/
@ -199,6 +201,13 @@ list_to_tuple(PyThreadState* unused, PyObject *v)
return _PyTuple_FromArray(((PyListObject *)v)->ob_item, Py_SIZE(v));
}
static PyObject *
make_typevar(PyThreadState* Py_UNUSED(ignored), PyObject *v)
{
assert(PyUnicode_Check(v));
return _Py_make_typevar(v, NULL, NULL);
}
const instrinsic_func1
_PyIntrinsics_UnaryFunctions[] = {
[0] = no_intrinsic,
@ -208,6 +217,11 @@ _PyIntrinsics_UnaryFunctions[] = {
[INTRINSIC_ASYNC_GEN_WRAP] = _PyAsyncGenValueWrapperNew,
[INTRINSIC_UNARY_POSITIVE] = unary_pos,
[INTRINSIC_LIST_TO_TUPLE] = list_to_tuple,
[INTRINSIC_TYPEVAR] = make_typevar,
[INTRINSIC_PARAMSPEC] = _Py_make_paramspec,
[INTRINSIC_TYPEVARTUPLE] = _Py_make_typevartuple,
[INTRINSIC_SUBSCRIPT_GENERIC] = _Py_subscript_generic,
[INTRINSIC_TYPEALIAS] = _Py_make_typealias,
};
@ -221,8 +235,26 @@ prep_reraise_star(PyThreadState* unused, PyObject *orig, PyObject *excs)
return _PyExc_PrepReraiseStar(orig, excs);
}
static PyObject *
make_typevar_with_bound(PyThreadState* Py_UNUSED(ignored), PyObject *name,
PyObject *evaluate_bound)
{
assert(PyUnicode_Check(name));
return _Py_make_typevar(name, evaluate_bound, NULL);
}
static PyObject *
make_typevar_with_constraints(PyThreadState* Py_UNUSED(ignored), PyObject *name,
PyObject *evaluate_constraints)
{
assert(PyUnicode_Check(name));
return _Py_make_typevar(name, NULL, evaluate_constraints);
}
const instrinsic_func2
_PyIntrinsics_BinaryFunctions[] = {
[INTRINSIC_PREP_RERAISE_STAR] = prep_reraise_star,
[INTRINSIC_TYPEVAR_WITH_BOUND] = make_typevar_with_bound,
[INTRINSIC_TYPEVAR_WITH_CONSTRAINTS] = make_typevar_with_constraints,
[INTRINSIC_SET_FUNCTION_TYPE_PARAMS] = _Py_set_function_type_params,
};