| 1 | """Methods on IO type"""
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| 2 | from __future__ import print_function
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| 3 |
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| 4 | from _devbuild.gen.value_asdl import value, value_t
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| 5 |
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| 6 | from core import error
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| 7 | from core import vm
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| 8 | from mycpp.mylib import log
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| 9 | from osh import prompt
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| 10 |
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| 11 | from typing import cast, TYPE_CHECKING
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| 12 | if TYPE_CHECKING:
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| 13 | from frontend import typed_args
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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 Eval(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 | return value.Null
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| 27 |
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| 28 |
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| 29 | class CaptureStdout(vm._Callable):
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| 30 |
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| 31 | def __init__(self):
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| 32 | # type: () -> None
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| 33 | pass
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| 34 |
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| 35 | def Call(self, rd):
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| 36 | # type: (typed_args.Reader) -> value_t
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| 37 | return value.Null
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| 38 |
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| 39 |
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| 40 | class PromptVal(vm._Callable):
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| 41 | """
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| 42 | _io->promptVal('$') is like \$
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| 43 | It expands to $ or # when root
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| 44 | """
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| 45 |
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| 46 | def __init__(self):
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| 47 | # type: () -> None
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| 48 | pass
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| 49 |
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| 50 | def Call(self, rd):
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| 51 | # type: (typed_args.Reader) -> value_t
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| 52 |
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| 53 | # "self" param is guaranteed to succeed
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| 54 | io = rd.PosIO()
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| 55 | what = rd.PosStr()
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| 56 | rd.Done() # no more args
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| 57 |
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| 58 | # Bug fix: protect against crash later in PromptVal()
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| 59 | if len(what) != 1:
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| 60 | raise error.Expr(
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| 61 | 'promptVal() expected a single char, got %r' % what,
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| 62 | rd.LeftParenToken())
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| 63 |
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| 64 | prompt_ev = cast(prompt.Evaluator, io.prompt_ev)
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| 65 | return value.Str(prompt_ev.PromptVal(what))
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| 66 |
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| 67 |
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| 68 | class Time(vm._Callable):
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| 69 |
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| 70 | def __init__(self):
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| 71 | # type: () -> None
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| 72 | pass
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| 73 |
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| 74 | def Call(self, rd):
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| 75 | # type: (typed_args.Reader) -> value_t
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| 76 | return value.Null
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| 77 |
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| 78 |
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| 79 | class Strftime(vm._Callable):
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| 80 |
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| 81 | def __init__(self):
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| 82 | # type: () -> None
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| 83 | pass
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| 84 |
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| 85 | def Call(self, rd):
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| 86 | # type: (typed_args.Reader) -> value_t
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| 87 | return value.Null
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