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