| 1 | #!/usr/bin/env python2
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| 2 | from __future__ import print_function
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| 3 | """
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| 4 | Render Oils value_t -> doc_t, so it can be pretty printed
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| 5 | """
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| 6 |
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| 7 | import math
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| 8 |
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| 9 | from _devbuild.gen.pretty_asdl import (doc, Measure, MeasuredDoc)
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| 10 | from _devbuild.gen.value_asdl import Obj, value, value_e, value_t, value_str
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| 11 | from data_lang import j8
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| 12 | from data_lang import j8_lite
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| 13 | from display import ansi
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| 14 | from display import pp_hnode
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| 15 | from display.pretty import _Break, _Concat, AsciiText
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| 16 | from frontend import match
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| 17 | from mycpp import mops
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| 18 | from mycpp.mylib import log, tagswitch, iteritems
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| 19 | from typing import cast, List, Dict
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| 20 |
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| 21 | import libc
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| 22 |
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| 23 | _ = log
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| 24 |
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| 25 |
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| 26 | def ValType(val):
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| 27 | # type: (value_t) -> str
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| 28 | """Returns a user-facing string like Int, Eggex, BashArray, etc."""
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| 29 | return value_str(val.tag(), dot=False)
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| 30 |
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| 31 |
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| 32 | def FloatString(fl):
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| 33 | # type: (float) -> str
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| 34 |
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| 35 | # Print in YSH syntax, similar to data_lang/j8.py
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| 36 | if math.isinf(fl):
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| 37 | s = 'INFINITY'
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| 38 | if fl < 0:
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| 39 | s = '-' + s
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| 40 | elif math.isnan(fl):
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| 41 | s = 'NAN'
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| 42 | else:
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| 43 | s = str(fl)
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| 44 | return s
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| 45 |
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| 46 |
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| 47 | #
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| 48 | # Unicode Helpers
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| 49 | #
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| 50 |
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| 51 |
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| 52 | def TryUnicodeWidth(s):
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| 53 | # type: (str) -> int
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| 54 | try:
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| 55 | width = libc.wcswidth(s)
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| 56 | except UnicodeError:
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| 57 | # e.g. en_US.UTF-8 locale missing, just return the number of bytes
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| 58 | width = len(s)
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| 59 |
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| 60 | if width == -1: # non-printable wide char
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| 61 | return len(s)
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| 62 |
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| 63 | return width
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| 64 |
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| 65 |
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| 66 | def UText(string):
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| 67 | # type: (str) -> MeasuredDoc
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| 68 | """Print `string` (which must not contain a newline)."""
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| 69 | return MeasuredDoc(doc.Text(string), Measure(TryUnicodeWidth(string), -1))
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| 70 |
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| 71 |
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| 72 | class ValueEncoder(pp_hnode.BaseEncoder):
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| 73 | """Converts Oils values into `doc`s, which can then be pretty printed."""
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| 74 |
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| 75 | def __init__(self):
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| 76 | # type: () -> None
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| 77 | pp_hnode.BaseEncoder.__init__(self)
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| 78 | self.ysh_style = True
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| 79 |
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| 80 | # These can be configurable later
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| 81 | self.int_style = ansi.YELLOW
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| 82 | self.float_style = ansi.BLUE
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| 83 | self.null_style = ansi.RED
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| 84 | self.bool_style = ansi.CYAN
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| 85 | self.string_style = ansi.GREEN
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| 86 | self.cycle_style = ansi.BOLD + ansi.BLUE
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| 87 | self.type_style = ansi.MAGENTA
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| 88 |
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| 89 | def TypePrefix(self, type_str):
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| 90 | # type: (str) -> List[MeasuredDoc]
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| 91 | """Return docs for type string '(List)', which may break afterward."""
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| 92 | type_name = self._Styled(self.type_style, AsciiText(type_str))
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| 93 |
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| 94 | n = len(type_str)
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| 95 | # Our maximum string is 'Float'
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| 96 | assert n <= 5, type_str
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| 97 |
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| 98 | # Start printing in column 8. Adjust to 6 because () takes 2 spaces.
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| 99 | spaces = ' ' * (6 - n)
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| 100 |
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| 101 | mdocs = [AsciiText('('), type_name, AsciiText(')'), _Break(spaces)]
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| 102 | return mdocs
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| 103 |
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| 104 | def Value(self, val):
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| 105 | # type: (value_t) -> MeasuredDoc
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| 106 | """Convert an Oils value into a `doc`, which can then be pretty printed."""
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| 107 | self.visiting.clear()
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| 108 | return self._Value(val)
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| 109 |
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| 110 | def _DictKey(self, s):
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| 111 | # type: (str) -> MeasuredDoc
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| 112 | if match.IsValidVarName(s):
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| 113 | encoded = s
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| 114 | else:
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| 115 | if self.ysh_style:
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| 116 | encoded = j8_lite.YshEncodeString(s)
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| 117 | else:
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| 118 | # TODO: remove this dead branch after fixing tests
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| 119 | encoded = j8_lite.EncodeString(s)
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| 120 | return UText(encoded)
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| 121 |
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| 122 | def _StringLiteral(self, s):
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| 123 | # type: (str) -> MeasuredDoc
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| 124 | if self.ysh_style:
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| 125 | # YSH r'' or b'' style
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| 126 | encoded = j8_lite.YshEncodeString(s)
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| 127 | else:
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| 128 | # TODO: remove this dead branch after fixing tests
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| 129 | encoded = j8_lite.EncodeString(s)
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| 130 | return self._Styled(self.string_style, UText(encoded))
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| 131 |
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| 132 | def _BashStringLiteral(self, s):
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| 133 | # type: (str) -> MeasuredDoc
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| 134 |
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| 135 | # '' or $'' style
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| 136 | #
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| 137 | # We mimic bash syntax by using $'\\' instead of b'\\'
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| 138 | #
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| 139 | # $ declare -a array=($'\\')
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| 140 | # $ = array
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| 141 | # (BashArray) (BashArray $'\\')
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| 142 | #
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| 143 | # $ declare -A assoc=([k]=$'\\')
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| 144 | # $ = assoc
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| 145 | # (BashAssoc) (BashAssoc ['k']=$'\\')
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| 146 |
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| 147 | encoded = j8_lite.ShellEncode(s)
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| 148 | return self._Styled(self.string_style, UText(encoded))
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| 149 |
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| 150 | def _YshList(self, vlist):
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| 151 | # type: (value.List) -> MeasuredDoc
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| 152 | """Print a string literal."""
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| 153 | if len(vlist.items) == 0:
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| 154 | return AsciiText('[]')
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| 155 | mdocs = [self._Value(item) for item in vlist.items]
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| 156 | return self._Surrounded('[', self._Tabular(mdocs, ','), ']')
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| 157 |
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| 158 | def _DictMdocs(self, d):
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| 159 | # type: (Dict[str, value_t]) -> List[MeasuredDoc]
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| 160 | mdocs = [] # type: List[MeasuredDoc]
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| 161 | for k, v in iteritems(d):
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| 162 | mdocs.append(
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| 163 | _Concat([self._DictKey(k),
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| 164 | AsciiText(': '),
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| 165 | self._Value(v)]))
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| 166 | return mdocs
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| 167 |
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| 168 | def _YshDict(self, vdict):
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| 169 | # type: (value.Dict) -> MeasuredDoc
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| 170 | if len(vdict.d) == 0:
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| 171 | return AsciiText('{}')
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| 172 | mdocs = self._DictMdocs(vdict.d)
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| 173 | return self._Surrounded('{', self._Join(mdocs, ',', ' '), '}')
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| 174 |
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| 175 | def _BashArray(self, varray):
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| 176 | # type: (value.BashArray) -> MeasuredDoc
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| 177 | type_name = self._Styled(self.type_style, AsciiText('BashArray'))
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| 178 | if len(varray.strs) == 0:
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| 179 | return _Concat([AsciiText('('), type_name, AsciiText(')')])
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| 180 | mdocs = [] # type: List[MeasuredDoc]
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| 181 | for s in varray.strs:
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| 182 | if s is None:
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| 183 | mdocs.append(AsciiText('null'))
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| 184 | else:
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| 185 | mdocs.append(self._BashStringLiteral(s))
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| 186 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 187 | self._Tabular(mdocs, ''), ')')
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| 188 |
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| 189 | def _BashAssoc(self, vassoc):
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| 190 | # type: (value.BashAssoc) -> MeasuredDoc
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| 191 | type_name = self._Styled(self.type_style, AsciiText('BashAssoc'))
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| 192 | if len(vassoc.d) == 0:
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| 193 | return _Concat([AsciiText('('), type_name, AsciiText(')')])
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| 194 | mdocs = [] # type: List[MeasuredDoc]
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| 195 | for k2, v2 in iteritems(vassoc.d):
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| 196 | mdocs.append(
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| 197 | _Concat([
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| 198 | AsciiText('['),
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| 199 | self._BashStringLiteral(k2),
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| 200 | AsciiText(']='),
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| 201 | self._BashStringLiteral(v2)
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| 202 | ]))
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| 203 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 204 | self._Join(mdocs, '', ' '), ')')
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| 205 |
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| 206 | def _SparseArray(self, val):
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| 207 | # type: (value.SparseArray) -> MeasuredDoc
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| 208 | type_name = self._Styled(self.type_style, AsciiText('SparseArray'))
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| 209 | if len(val.d) == 0:
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| 210 | return _Concat([AsciiText('('), type_name, AsciiText(')')])
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| 211 | mdocs = [] # type: List[MeasuredDoc]
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| 212 | for k2, v2 in iteritems(val.d):
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| 213 | mdocs.append(
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| 214 | _Concat([
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| 215 | AsciiText('['),
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| 216 | self._Styled(self.int_style, AsciiText(mops.ToStr(k2))),
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| 217 | AsciiText(']='),
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| 218 | self._BashStringLiteral(v2)
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| 219 | ]))
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| 220 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 221 | self._Join(mdocs, '', ' '), ')')
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| 222 |
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| 223 | def _Obj(self, obj):
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| 224 | # type: (Obj) -> MeasuredDoc
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| 225 | chain = [] # type: List[MeasuredDoc]
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| 226 | cur = obj
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| 227 | while cur is not None:
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| 228 | mdocs = self._DictMdocs(cur.d)
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| 229 | chain.append(
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| 230 | self._Surrounded('(', self._Join(mdocs, ',', ' '), ')'))
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| 231 | cur = cur.prototype
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| 232 | if cur is not None:
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| 233 | chain.append(AsciiText(' --> '))
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| 234 |
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| 235 | return _Concat(chain)
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| 236 |
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| 237 | def _Value(self, val):
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| 238 | # type: (value_t) -> MeasuredDoc
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| 239 |
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| 240 | with tagswitch(val) as case:
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| 241 | if case(value_e.Null):
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| 242 | return self._Styled(self.null_style, AsciiText('null'))
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| 243 |
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| 244 | elif case(value_e.Bool):
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| 245 | b = cast(value.Bool, val).b
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| 246 | return self._Styled(self.bool_style,
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| 247 | AsciiText('true' if b else 'false'))
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| 248 |
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| 249 | elif case(value_e.Int):
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| 250 | i = cast(value.Int, val).i
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| 251 | return self._Styled(self.int_style, AsciiText(mops.ToStr(i)))
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| 252 |
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| 253 | elif case(value_e.Float):
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| 254 | f = cast(value.Float, val).f
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| 255 | return self._Styled(self.float_style,
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| 256 | AsciiText(FloatString(f)))
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| 257 |
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| 258 | elif case(value_e.Str):
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| 259 | s = cast(value.Str, val).s
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| 260 | return self._StringLiteral(s)
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| 261 |
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| 262 | elif case(value_e.Range):
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| 263 | r = cast(value.Range, val)
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| 264 | type_name = self._Styled(self.type_style,
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| 265 | AsciiText(ValType(r)))
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| 266 | mdocs = [
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| 267 | AsciiText(str(r.lower)),
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| 268 | AsciiText('..<'),
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| 269 | AsciiText(str(r.upper))
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| 270 | ]
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| 271 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 272 | self._Join(mdocs, '', ' '),
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| 273 | ')')
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| 274 |
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| 275 | elif case(value_e.List):
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| 276 | vlist = cast(value.List, val)
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| 277 | heap_id = j8.HeapValueId(vlist)
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| 278 | if self.visiting.get(heap_id, False):
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| 279 | return _Concat([
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| 280 | AsciiText('['),
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| 281 | self._Styled(self.cycle_style, AsciiText('...')),
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| 282 | AsciiText(']')
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| 283 | ])
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| 284 | else:
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| 285 | self.visiting[heap_id] = True
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| 286 | result = self._YshList(vlist)
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| 287 | self.visiting[heap_id] = False
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| 288 | return result
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| 289 |
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| 290 | elif case(value_e.Dict):
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| 291 | vdict = cast(value.Dict, val)
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| 292 | heap_id = j8.HeapValueId(vdict)
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| 293 | if self.visiting.get(heap_id, False):
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| 294 | return _Concat([
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| 295 | AsciiText('{'),
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| 296 | self._Styled(self.cycle_style, AsciiText('...')),
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| 297 | AsciiText('}')
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| 298 | ])
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| 299 | else:
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| 300 | self.visiting[heap_id] = True
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| 301 | result = self._YshDict(vdict)
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| 302 | self.visiting[heap_id] = False
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| 303 | return result
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| 304 |
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| 305 | elif case(value_e.SparseArray):
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| 306 | sparse = cast(value.SparseArray, val)
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| 307 | return self._SparseArray(sparse)
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| 308 |
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| 309 | elif case(value_e.BashArray):
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| 310 | varray = cast(value.BashArray, val)
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| 311 | return self._BashArray(varray)
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| 312 |
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| 313 | elif case(value_e.BashAssoc):
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| 314 | vassoc = cast(value.BashAssoc, val)
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| 315 | return self._BashAssoc(vassoc)
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| 316 |
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| 317 | elif case(value_e.Obj):
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| 318 | vaobj = cast(Obj, val)
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| 319 | heap_id = j8.HeapValueId(vaobj)
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| 320 | if self.visiting.get(heap_id, False):
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| 321 | return _Concat([
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| 322 | AsciiText('('),
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| 323 | self._Styled(self.cycle_style, AsciiText('...')),
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| 324 | AsciiText(')')
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| 325 | ])
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| 326 | else:
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| 327 | self.visiting[heap_id] = True
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| 328 | result = self._Obj(vaobj)
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| 329 | self.visiting[heap_id] = False
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| 330 | return result
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| 331 |
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| 332 | # Bug fix: these types are GLOBAL singletons in C++. This means
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| 333 | # they have no object ID, so j8.ValueIdString() will CRASH on them.
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| 334 |
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| 335 | elif case(value_e.Stdin, value_e.Interrupted):
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| 336 | type_name = self._Styled(self.type_style,
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| 337 | AsciiText(ValType(val)))
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| 338 | return _Concat([AsciiText('<'), type_name, AsciiText('>')])
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| 339 |
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| 340 | else:
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| 341 | type_name = self._Styled(self.type_style,
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| 342 | AsciiText(ValType(val)))
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| 343 | id_str = j8.ValueIdString(val)
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| 344 | return _Concat(
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| 345 | [AsciiText('<'), type_name,
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| 346 | AsciiText(id_str + '>')])
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| 347 |
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| 348 |
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| 349 | # vim: sw=4
|