init

.venv/lib/python3.8/site-packages/mypyc/common.py

@@ -0,0 +1,121 @@
+from mypy.util import unnamed_function
+from typing import Dict, Any, Optional, Tuple
+import sys
+
+from typing_extensions import Final
+
+PREFIX: Final = "CPyPy_"  # Python wrappers
+NATIVE_PREFIX: Final = "CPyDef_"  # Native functions etc.
+DUNDER_PREFIX: Final = "CPyDunder_"  # Wrappers for exposing dunder methods to the API
+REG_PREFIX: Final = "cpy_r_"  # Registers
+STATIC_PREFIX: Final = "CPyStatic_"  # Static variables (for literals etc.)
+TYPE_PREFIX: Final = "CPyType_"  # Type object struct
+MODULE_PREFIX: Final = "CPyModule_"  # Cached modules
+ATTR_PREFIX: Final = "_"  # Attributes
+
+ENV_ATTR_NAME: Final = "__mypyc_env__"
+NEXT_LABEL_ATTR_NAME: Final = "__mypyc_next_label__"
+TEMP_ATTR_NAME: Final = "__mypyc_temp__"
+LAMBDA_NAME: Final = "__mypyc_lambda__"
+PROPSET_PREFIX: Final = "__mypyc_setter__"
+SELF_NAME: Final = "__mypyc_self__"
+
+# Max short int we accept as a literal is based on 32-bit platforms,
+# so that we can just always emit the same code.
+
+TOP_LEVEL_NAME: Final = "__top_level__"  # Special function representing module top level
+
+# Maximal number of subclasses for a class to trigger fast path in isinstance() checks.
+FAST_ISINSTANCE_MAX_SUBCLASSES: Final = 2
+
+IS_32_BIT_PLATFORM: Final = sys.maxsize < (1 << 31)
+
+PLATFORM_SIZE = 4 if IS_32_BIT_PLATFORM else 8
+
+# Python 3.5 on macOS uses a hybrid 32/64-bit build that requires some workarounds.
+# The same generated C will be compiled in both 32 and 64 bit modes when building mypy
+# wheels (for an unknown reason).
+#
+# Note that we use "in ['darwin']" because of https://github.com/mypyc/mypyc/issues/761.
+IS_MIXED_32_64_BIT_BUILD: Final = sys.platform in ["darwin"] and sys.version_info < (3, 6)
+
+# Maximum value for a short tagged integer.
+MAX_SHORT_INT: Final = sys.maxsize >> 1
+
+# Maximum value for a short tagged integer represented as a C integer literal.
+#
+# Note: Assume that the compiled code uses the same bit width as mypyc, except for
+#       Python 3.5 on macOS.
+MAX_LITERAL_SHORT_INT: Final = sys.maxsize >> 1 if not IS_MIXED_32_64_BIT_BUILD else 2 ** 30 - 1
+MIN_LITERAL_SHORT_INT: Final = -MAX_LITERAL_SHORT_INT - 1
+
+# Runtime C library files
+RUNTIME_C_FILES: Final = [
+    'init.c',
+    'getargs.c',
+    'getargsfast.c',
+    'int_ops.c',
+    'str_ops.c',
+    'bytes_ops.c',
+    'list_ops.c',
+    'dict_ops.c',
+    'set_ops.c',
+    'tuple_ops.c',
+    'exc_ops.c',
+    'misc_ops.c',
+    'generic_ops.c',
+]
+
+
+JsonDict = Dict[str, Any]
+
+
+def shared_lib_name(group_name: str) -> str:
+    """Given a group name, return the actual name of its extension module.
+
+    (This just adds a suffix to the final component.)
+    """
+    return '{}__mypyc'.format(group_name)
+
+
+def short_name(name: str) -> str:
+    if name.startswith('builtins.'):
+        return name[9:]
+    return name
+
+
+def use_fastcall(capi_version: Tuple[int, int]) -> bool:
+    # We can use METH_FASTCALL for faster wrapper functions on Python 3.7+.
+    return capi_version >= (3, 7)
+
+
+def use_vectorcall(capi_version: Tuple[int, int]) -> bool:
+    # We can use vectorcalls to make calls on Python 3.8+ (PEP 590).
+    return capi_version >= (3, 8)
+
+
+def use_method_vectorcall(capi_version: Tuple[int, int]) -> bool:
+    # We can use a dedicated vectorcall API to call methods on Python 3.9+.
+    return capi_version >= (3, 9)
+
+
+def get_id_from_name(name: str, fullname: str, line: int) -> str:
+    """Create a unique id for a function.
+
+    This creates an id that is unique for any given function definition, so that it can be used as
+    a dictionary key. This is usually the fullname of the function, but this is different in that
+    it handles the case where the function is named '_', in which case multiple different functions
+    could have the same name."""
+    if unnamed_function(name):
+        return "{}.{}".format(fullname, line)
+    else:
+        return fullname
+
+
+def short_id_from_name(func_name: str, shortname: str, line: Optional[int]) -> str:
+    if unnamed_function(func_name):
+        assert line is not None
+        partial_name = "{}.{}".format(shortname, line)
+    else:
+        partial_name = shortname
+    return partial_name