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[mypyc] Support new syntax for generic functions and classes (PEP 695)#17357

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Merged
JukkaL merged 16 commits intomasterfrommypyc-type-var-syntax
Jun 11, 2024
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Minor optimization
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@JukkaL
JukkaL committedJun 10, 2024
commitedc2f6a1baff3a18ff70612dd3f275d6b0bb8e46
13 changes: 9 additions & 4 deletionsmypyc/irbuild/classdef.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -465,17 +465,22 @@ def make_generic_base_class(builder: IRBuilder, type_args: list[TypeParam], line
"""Construct Generic[...] base class object for a new-style generic class (Python 3.12)."""
mod = builder.call_c(import_op, [builder.load_str("_typing")], line)
tvs = []
type_var_imported: Value | None = None
for type_param in type_args:
unpack = False
if type_param.kind == TYPE_VAR_KIND:
name = "TypeVar"
if type_var_imported:
# Reuse previously imported value as a minor optimization
tvt = type_var_imported
else:
tvt = builder.py_get_attr(mod, "TypeVar", line)
type_var_imported = tvt
elif type_param.kind == TYPE_VAR_TUPLE_KIND:
name = "TypeVarTuple"
tvt =builder.py_get_attr(mod,"TypeVarTuple", line)
unpack = True
else:
assert type_param.kind == PARAM_SPEC_KIND
name = "ParamSpec"
tvt = builder.py_get_attr(mod, name, line)
tvt = builder.py_get_attr(mod, "ParamSpec", line)
tv = builder.py_call(tvt, [builder.load_str(type_param.name)], line)
if unpack:
# Evaluate *Ts for a TypeVarTuple
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