| 1 | """Methods on YSH Dict"""
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| 2 |
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| 3 | from __future__ import print_function
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| 4 |
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| 5 | from _devbuild.gen.value_asdl import (value, value_e, value_t, Obj)
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| 6 | from _devbuild.gen.runtime_asdl import coerced_e
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| 7 |
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| 8 | from core import error
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| 9 | from core import vm
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| 10 | from frontend import typed_args
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| 11 | from mycpp import mylib, mops
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| 12 | from mycpp.mylib import log, tagswitch
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| 13 | from ysh import expr_eval
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| 14 |
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| 15 | from typing import cast, List
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| 16 |
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| 17 | _ = log
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| 18 |
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| 19 |
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| 20 | class Keys(vm._Callable):
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| 21 |
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| 22 | def __init__(self):
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| 23 | # type: () -> None
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| 24 | pass
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| 25 |
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| 26 | def Call(self, rd):
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| 27 | # type: (typed_args.Reader) -> value_t
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| 28 |
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| 29 | dictionary = rd.PosDict()
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| 30 | rd.Done()
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| 31 |
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| 32 | keys = [value.Str(k) for k in dictionary.keys()] # type: List[value_t]
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| 33 | return value.List(keys)
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| 34 |
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| 35 |
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| 36 | class Values(vm._Callable):
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| 37 |
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| 38 | def __init__(self):
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| 39 | # type: () -> None
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| 40 | pass
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| 41 |
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| 42 | def Call(self, rd):
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| 43 | # type: (typed_args.Reader) -> value_t
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| 44 |
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| 45 | dictionary = rd.PosDict()
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| 46 | rd.Done()
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| 47 |
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| 48 | values = dictionary.values() # type: List[value_t]
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| 49 | return value.List(values)
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| 50 |
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| 51 |
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| 52 | class Erase(vm._Callable):
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| 53 |
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| 54 | def __init__(self):
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| 55 | # type: () -> None
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| 56 | pass
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| 57 |
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| 58 | def Call(self, rd):
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| 59 | # type: (typed_args.Reader) -> value_t
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| 60 |
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| 61 | dictionary = rd.PosDict()
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| 62 | key = rd.PosStr()
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| 63 | rd.Done()
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| 64 |
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| 65 | mylib.dict_erase(dictionary, key)
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| 66 | return value.Null
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| 67 |
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| 68 |
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| 69 | class Clear(vm._Callable):
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| 70 |
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| 71 | def __init__(self):
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| 72 | # type: () -> None
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| 73 | pass
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| 74 |
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| 75 | def Call(self, rd):
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| 76 | # type: (typed_args.Reader) -> value_t
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| 77 |
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| 78 | dictionary = rd.PosDict()
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| 79 | rd.Done()
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| 80 |
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| 81 | dictionary.clear()
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| 82 | return value.Null
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| 83 |
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| 84 |
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| 85 | class Inc(vm._Callable):
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| 86 |
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| 87 | def __init__(self):
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| 88 | # type: () -> None
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| 89 | pass
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| 90 |
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| 91 | def Call(self, rd):
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| 92 | # type: (typed_args.Reader) -> value_t
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| 93 |
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| 94 | dictionary = rd.PosDict()
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| 95 | key = rd.PosStr()
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| 96 | inc_val = rd.PosValue()
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| 97 | rd.Done()
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| 98 |
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| 99 | # default value for the dictionary entry is zero
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| 100 | if key in dictionary:
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| 101 | left = dictionary[key]
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| 102 | else:
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| 103 | left = value.Int(mops.ZERO)
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| 104 |
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| 105 | c, i1, i2, f1, f2 = expr_eval.ConvertForBinaryOp(left, inc_val)
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| 106 |
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| 107 | if c == coerced_e.Int:
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| 108 | res = value.Int(mops.Add(i1, i2)) # type: value_t
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| 109 | elif c == coerced_e.Float:
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| 110 | res = value.Float(f1 + f2)
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| 111 | else:
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| 112 | raise error.TypeErr(left, 'inc() expected Int/Float value in dict',
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| 113 | rd.BlamePos())
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| 114 |
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| 115 | dictionary[key] = res
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| 116 |
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| 117 | return value.Null
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| 118 |
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| 119 |
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| 120 | class Append(vm._Callable):
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| 121 |
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| 122 | def __init__(self):
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| 123 | # type: () -> None
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| 124 | pass
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| 125 |
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| 126 | def Call(self, rd):
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| 127 | # type: (typed_args.Reader) -> value_t
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| 128 |
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| 129 | dictionary = rd.PosDict()
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| 130 | key = rd.PosStr()
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| 131 | append_val = rd.PosValue()
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| 132 | rd.Done()
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| 133 |
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| 134 | if key in dictionary:
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| 135 | UP_obj = dictionary[key]
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| 136 | if UP_obj.tag() == value_e.List:
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| 137 | lst = cast(value.List, UP_obj)
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| 138 | lst.items.append(append_val)
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| 139 | else:
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| 140 | raise error.TypeErr(UP_obj, 'append() expected List value in dict',
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| 141 | rd.BlamePos())
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| 142 | else:
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| 143 | dictionary[key] = value.List([append_val])
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| 144 |
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| 145 | return value.Null
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| 146 |
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| 147 |
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| 148 | class Update(vm._Callable):
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| 149 |
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| 150 | def __init__(self):
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| 151 | # type: () -> None
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| 152 | pass
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| 153 |
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| 154 | def Call(self, rd):
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| 155 | # type: (typed_args.Reader) -> value_t
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| 156 |
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| 157 | dict_to_update = rd.PosDict()
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| 158 | other_dict = rd.PosDict()
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| 159 | rd.Done()
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| 160 |
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| 161 | dict_to_update.update(other_dict)
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| 162 |
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| 163 | return value.Null
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| 164 |
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| 165 |
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| 166 | class Get(vm._Callable):
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| 167 |
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| 168 | def __init__(self):
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| 169 | # type: () -> None
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| 170 | pass
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| 171 |
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| 172 | def Call(self, rd):
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| 173 | # type: (typed_args.Reader) -> value_t
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| 174 |
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| 175 | obj = rd.PosValue()
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| 176 | key = rd.PosStr()
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| 177 | default_value = rd.OptionalValue()
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| 178 | rd.Done()
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| 179 |
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| 180 | UP_obj = obj
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| 181 | with tagswitch(obj) as case:
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| 182 | if case(value_e.Dict):
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| 183 | obj = cast(value.Dict, UP_obj)
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| 184 | d = obj.d
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| 185 | elif case(value_e.Obj):
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| 186 | obj = cast(Obj, UP_obj)
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| 187 | d = obj.d
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| 188 | else:
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| 189 | raise error.TypeErr(obj, 'get() expected Dict or Obj',
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| 190 | rd.BlamePos())
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| 191 |
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| 192 | if default_value is None:
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| 193 | default_value = value.Null
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| 194 | return d.get(key, default_value)
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