Initial commit: add .gitignore and README

.venv/lib/python3.12/site-packages/mypyc/lower/registry.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from typing import Callable, Final, Optional, TypeVar
+
+from mypyc.ir.ops import Value
+from mypyc.irbuild.ll_builder import LowLevelIRBuilder
+
+LowerFunc = Callable[[LowLevelIRBuilder, list[Value], int], Value]
+LowerFuncOpt = Callable[[LowLevelIRBuilder, list[Value], int], Optional[Value]]
+
+lowering_registry: Final[dict[str, LowerFuncOpt]] = {}
+
+LF = TypeVar("LF", LowerFunc, LowerFuncOpt)
+
+
+def lower_primitive_op(name: str) -> Callable[[LF], LF]:
+    """Register a handler that generates low-level IR for a primitive op."""
+
+    def wrapper(f: LF) -> LF:
+        assert name not in lowering_registry
+        lowering_registry[name] = f
+        return f
+
+    return wrapper
+
+
+# Import various modules that set up global state.
+from mypyc.lower import int_ops, list_ops, misc_ops  # noqa: F401