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""" |
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Implementation of enums. |
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""" |
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import operator |
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from numba.core.imputils import (lower_builtin, lower_getattr, |
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lower_getattr_generic, lower_cast, |
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lower_constant, impl_ret_untracked) |
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from numba.core import types |
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from numba.core.extending import overload_method |
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@lower_builtin(operator.eq, types.EnumMember, types.EnumMember) |
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def enum_eq(context, builder, sig, args): |
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tu, tv = sig.args |
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u, v = args |
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res = context.generic_compare(builder, operator.eq, |
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(tu.dtype, tv.dtype), (u, v)) |
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return impl_ret_untracked(context, builder, sig.return_type, res) |
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@lower_builtin(operator.is_, types.EnumMember, types.EnumMember) |
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def enum_is(context, builder, sig, args): |
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tu, tv = sig.args |
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u, v = args |
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if tu == tv: |
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res = context.generic_compare(builder, operator.eq, |
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(tu.dtype, tv.dtype), (u, v)) |
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else: |
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res = context.get_constant(sig.return_type, False) |
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return impl_ret_untracked(context, builder, sig.return_type, res) |
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@lower_builtin(operator.ne, types.EnumMember, types.EnumMember) |
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def enum_ne(context, builder, sig, args): |
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tu, tv = sig.args |
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u, v = args |
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res = context.generic_compare(builder, operator.ne, |
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(tu.dtype, tv.dtype), (u, v)) |
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return impl_ret_untracked(context, builder, sig.return_type, res) |
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@lower_getattr(types.EnumMember, 'value') |
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def enum_value(context, builder, ty, val): |
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return val |
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@lower_cast(types.IntEnumMember, types.Integer) |
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def int_enum_to_int(context, builder, fromty, toty, val): |
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""" |
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Convert an IntEnum member to its raw integer value. |
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""" |
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return context.cast(builder, val, fromty.dtype, toty) |
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@lower_constant(types.EnumMember) |
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def enum_constant(context, builder, ty, pyval): |
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""" |
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Return a LLVM constant representing enum member *pyval*. |
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""" |
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return context.get_constant_generic(builder, ty.dtype, pyval.value) |
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@lower_getattr_generic(types.EnumClass) |
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def enum_class_getattr(context, builder, ty, val, attr): |
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""" |
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Return an enum member by attribute name. |
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""" |
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member = getattr(ty.instance_class, attr) |
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return context.get_constant_generic(builder, ty.dtype, member.value) |
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@lower_builtin('static_getitem', types.EnumClass, types.StringLiteral) |
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def enum_class_getitem(context, builder, sig, args): |
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""" |
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Return an enum member by index name. |
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""" |
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enum_cls_typ, idx = sig.args |
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member = enum_cls_typ.instance_class[idx.literal_value] |
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return context.get_constant_generic(builder, enum_cls_typ.dtype, |
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member.value) |
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@overload_method(types.IntEnumMember, '__hash__') |
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def intenum_hash(val): |
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def hash_impl(val): |
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return hash(val.value) |
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return hash_impl |
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