| 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 |
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| 7 | from core import error
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| 8 | from core import vm
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| 9 | from frontend import typed_args
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| 10 | from mycpp import mylib
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| 11 | from mycpp.mylib import log, tagswitch
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| 12 |
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| 13 | from typing import cast, List
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| 14 |
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| 15 | _ = log
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| 16 |
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| 17 |
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| 18 | class Keys(vm._Callable):
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| 19 |
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| 20 | def __init__(self):
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| 21 | # type: () -> None
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| 22 | pass
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| 23 |
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| 24 | def Call(self, rd):
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| 25 | # type: (typed_args.Reader) -> value_t
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| 26 |
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| 27 | dictionary = rd.PosDict()
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| 28 | rd.Done()
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| 29 |
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| 30 | keys = [value.Str(k) for k in dictionary.keys()] # type: List[value_t]
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| 31 | return value.List(keys)
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| 32 |
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| 33 |
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| 34 | class Values(vm._Callable):
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| 35 |
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| 36 | def __init__(self):
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| 37 | # type: () -> None
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| 38 | pass
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| 39 |
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| 40 | def Call(self, rd):
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| 41 | # type: (typed_args.Reader) -> value_t
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| 42 |
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| 43 | dictionary = rd.PosDict()
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| 44 | rd.Done()
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| 45 |
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| 46 | values = dictionary.values() # type: List[value_t]
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| 47 | return value.List(values)
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| 48 |
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| 49 |
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| 50 | class Erase(vm._Callable):
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| 51 |
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| 52 | def __init__(self):
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| 53 | # type: () -> None
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| 54 | pass
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| 55 |
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| 56 | def Call(self, rd):
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| 57 | # type: (typed_args.Reader) -> value_t
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| 58 |
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| 59 | dictionary = rd.PosDict()
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| 60 | key = rd.PosStr()
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| 61 | rd.Done()
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| 62 |
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| 63 | mylib.dict_erase(dictionary, key)
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| 64 | return value.Null
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| 65 |
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| 66 |
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| 67 | class Get(vm._Callable):
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| 68 |
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| 69 | def __init__(self):
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| 70 | # type: () -> None
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| 71 | pass
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| 72 |
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| 73 | def Call(self, rd):
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| 74 | # type: (typed_args.Reader) -> value_t
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| 75 |
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| 76 | obj = rd.PosValue()
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| 77 | key = rd.PosStr()
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| 78 | default_value = rd.PosValue()
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| 79 | rd.Done()
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| 80 |
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| 81 | UP_obj = obj
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| 82 | with tagswitch(obj) as case:
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| 83 | if case(value_e.Dict):
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| 84 | obj = cast(value.Dict, UP_obj)
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| 85 | d = obj.d
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| 86 | elif case(value_e.Obj):
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| 87 | obj = cast(Obj, UP_obj)
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| 88 | d = obj.d
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| 89 | else:
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| 90 | raise error.TypeErr(obj, 'get() expected Dict or Obj',
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| 91 | rd.BlamePos())
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| 92 |
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| 93 | return d.get(key, default_value)
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