| 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.runtime_asdl import error_code_e
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| 11 | from _devbuild.gen.value_asdl import Obj, value, value_e, value_t, value_str
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| 12 | from core import bash_impl
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| 13 | from data_lang import j8
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| 14 | from data_lang import j8_lite
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| 15 | from display import ansi
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| 16 | from display import pp_hnode
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| 17 | from display.pretty import _Break, _Concat, AsciiText
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| 18 | from frontend import match
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| 19 | from mycpp import mops
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| 20 | from mycpp.mylib import log, tagswitch, iteritems
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| 21 | from typing import cast, List, Dict
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| 22 |
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| 23 | import libc
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| 24 |
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| 25 | _ = log
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| 26 |
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| 27 |
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| 28 | def ValType(val):
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| 29 | # type: (value_t) -> str
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| 30 | """Returns a user-facing string like Int, Eggex, BashArray, etc."""
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| 31 | return value_str(val.tag(), dot=False)
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| 32 |
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| 33 |
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| 34 | def FloatString(fl):
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| 35 | # type: (float) -> str
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| 36 |
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| 37 | # Print in YSH syntax, similar to data_lang/j8.py
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| 38 | if math.isinf(fl):
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| 39 | s = 'INFINITY'
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| 40 | if fl < 0:
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| 41 | s = '-' + s
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| 42 | elif math.isnan(fl):
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| 43 | s = 'NAN'
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| 44 | else:
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| 45 | s = str(fl)
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| 46 | return s
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| 47 |
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| 48 |
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| 49 | #
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| 50 | # Unicode Helpers
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| 51 | #
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| 52 |
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| 53 |
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| 54 | def TryUnicodeWidth(s):
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| 55 | # type: (str) -> int
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| 56 | try:
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| 57 | width = libc.wcswidth(s)
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| 58 | except UnicodeError:
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| 59 | # e.g. en_US.UTF-8 locale missing, just return the number of bytes
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| 60 | width = len(s)
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| 61 |
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| 62 | if width == -1: # non-printable wide char
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| 63 | return len(s)
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| 64 |
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| 65 | return width
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| 66 |
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| 67 |
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| 68 | def UText(string):
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| 69 | # type: (str) -> MeasuredDoc
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| 70 | """Print `string` (which must not contain a newline)."""
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| 71 | return MeasuredDoc(doc.Text(string), Measure(TryUnicodeWidth(string), -1))
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| 72 |
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| 73 |
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| 74 | class ValueEncoder(pp_hnode.BaseEncoder):
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| 75 | """Converts Oils values into `doc`s, which can then be pretty printed."""
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| 76 |
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| 77 | def __init__(self):
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| 78 | # type: () -> None
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| 79 | pp_hnode.BaseEncoder.__init__(self)
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| 80 | self.ysh_style = True
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| 81 |
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| 82 | # These can be configurable later
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| 83 | self.int_style = ansi.YELLOW
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| 84 | self.float_style = ansi.BLUE
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| 85 | self.null_style = ansi.RED
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| 86 | self.bool_style = ansi.CYAN
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| 87 | self.string_style = ansi.GREEN
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| 88 | self.cycle_style = ansi.BOLD + ansi.BLUE
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| 89 | self.type_style = ansi.MAGENTA
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| 90 |
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| 91 | def TypePrefix(self, type_str):
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| 92 | # type: (str) -> List[MeasuredDoc]
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| 93 | """Return docs for type string '(List)', which may break afterward."""
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| 94 | type_name = self._Styled(self.type_style, AsciiText(type_str))
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| 95 |
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| 96 | n = len(type_str)
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| 97 | # Our maximum string is 'Float'
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| 98 | assert n <= 5, type_str
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| 99 |
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| 100 | # Start printing in column 8. Adjust to 6 because () takes 2 spaces.
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| 101 | spaces = ' ' * (6 - n)
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| 102 |
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| 103 | mdocs = [AsciiText('('), type_name, AsciiText(')'), _Break(spaces)]
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| 104 | return mdocs
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| 105 |
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| 106 | def Value(self, val):
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| 107 | # type: (value_t) -> MeasuredDoc
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| 108 | """Convert an Oils value into a `doc`, which can then be pretty printed."""
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| 109 | self.visiting.clear()
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| 110 | return self._Value(val)
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| 111 |
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| 112 | def _DictKey(self, s):
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| 113 | # type: (str) -> MeasuredDoc
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| 114 | if match.IsValidVarName(s):
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| 115 | encoded = s
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| 116 | else:
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| 117 | if self.ysh_style:
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| 118 | encoded = j8_lite.YshEncodeString(s)
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| 119 | else:
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| 120 | # TODO: remove this dead branch after fixing tests
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| 121 | encoded = j8_lite.EncodeString(s)
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| 122 | return UText(encoded)
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| 123 |
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| 124 | def _StringLiteral(self, s):
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| 125 | # type: (str) -> MeasuredDoc
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| 126 | if self.ysh_style:
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| 127 | # YSH r'' or b'' style
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| 128 | encoded = j8_lite.YshEncodeString(s)
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| 129 | else:
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| 130 | # TODO: remove this dead branch after fixing tests
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| 131 | encoded = j8_lite.EncodeString(s)
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| 132 | return self._Styled(self.string_style, UText(encoded))
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| 133 |
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| 134 | def _BashStringLiteral(self, s):
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| 135 | # type: (str) -> MeasuredDoc
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| 136 |
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| 137 | # '' or $'' style
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| 138 | #
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| 139 | # We mimic bash syntax by using $'\\' instead of b'\\'
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| 140 | #
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| 141 | # $ declare -a array=($'\\')
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| 142 | # $ = array
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| 143 | # (InternalStringArray) (InternalStringArray $'\\')
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| 144 | #
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| 145 | # $ declare -A assoc=([k]=$'\\')
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| 146 | # $ = assoc
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| 147 | # (BashAssoc) (BashAssoc ['k']=$'\\')
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| 148 |
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| 149 | encoded = j8_lite.ShellEncode(s)
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| 150 | return self._Styled(self.string_style, UText(encoded))
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| 151 |
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| 152 | def _YshList(self, vlist):
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| 153 | # type: (value.List) -> MeasuredDoc
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| 154 | """Print a string literal."""
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| 155 | if len(vlist.items) == 0:
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| 156 | return AsciiText('[]')
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| 157 | mdocs = [self._Value(item) for item in vlist.items]
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| 158 | return self._Surrounded('[', self._Tabular(mdocs, ','), ']')
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| 159 |
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| 160 | def _DictMdocs(self, d):
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| 161 | # type: (Dict[str, value_t]) -> List[MeasuredDoc]
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| 162 | mdocs = [] # type: List[MeasuredDoc]
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| 163 | for k, v in iteritems(d):
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| 164 | mdocs.append(
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| 165 | _Concat([self._DictKey(k),
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| 166 | AsciiText(': '),
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| 167 | self._Value(v)]))
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| 168 | return mdocs
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| 169 |
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| 170 | def _YshDict(self, vdict):
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| 171 | # type: (value.Dict) -> MeasuredDoc
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| 172 | if len(vdict.d) == 0:
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| 173 | return AsciiText('{}')
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| 174 | mdocs = self._DictMdocs(vdict.d)
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| 175 | return self._Surrounded('{', self._Join(mdocs, ',', ' '), '}')
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| 176 |
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| 177 | def _InternalStringArray(self, varray):
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| 178 | # type: (value.InternalStringArray) -> MeasuredDoc
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| 179 | type_name = self._Styled(self.type_style,
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| 180 | AsciiText('InternalStringArray'))
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| 181 | if bash_impl.InternalStringArray_Count(varray) == 0:
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| 182 | return _Concat([AsciiText('('), type_name, AsciiText(')')])
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| 183 | mdocs = [] # type: List[MeasuredDoc]
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| 184 | for s in bash_impl.InternalStringArray_GetValues(varray):
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| 185 | if s is None:
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| 186 | mdocs.append(AsciiText('null'))
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| 187 | else:
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| 188 | mdocs.append(self._BashStringLiteral(s))
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| 189 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 190 | self._Tabular(mdocs, ''), ')')
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| 191 |
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| 192 | def _BashAssoc(self, vassoc):
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| 193 | # type: (value.BashAssoc) -> MeasuredDoc
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| 194 | type_name = self._Styled(self.type_style, AsciiText('BashAssoc'))
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| 195 | if bash_impl.BashAssoc_Count(vassoc) == 0:
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| 196 | return _Concat([AsciiText('('), type_name, AsciiText(')')])
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| 197 | mdocs = [] # type: List[MeasuredDoc]
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| 198 | for k2, v2 in iteritems(bash_impl.BashAssoc_GetDict(vassoc)):
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| 199 | mdocs.append(
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| 200 | _Concat([
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| 201 | AsciiText('['),
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| 202 | self._BashStringLiteral(k2),
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| 203 | AsciiText(']='),
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| 204 | self._BashStringLiteral(v2)
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| 205 | ]))
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| 206 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 207 | self._Join(mdocs, '', ' '), ')')
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| 208 |
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| 209 | def _BashArray(self, val):
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| 210 | # type: (value.BashArray) -> MeasuredDoc
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| 211 | type_name = self._Styled(self.type_style, AsciiText('BashArray'))
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| 212 | if bash_impl.BashArray_Count(val) == 0:
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| 213 | return _Concat([AsciiText('('), type_name, AsciiText(')')])
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| 214 | mdocs = [] # type: List[MeasuredDoc]
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| 215 | for k2 in bash_impl.BashArray_GetKeys(val):
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| 216 | v2, error_code = bash_impl.BashArray_GetElement(val, k2)
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| 217 | assert error_code == error_code_e.OK, error_code
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| 218 | mdocs.append(
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| 219 | _Concat([
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| 220 | AsciiText('['),
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| 221 | self._Styled(self.int_style, AsciiText(mops.ToStr(k2))),
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| 222 | AsciiText(']='),
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| 223 | self._BashStringLiteral(v2)
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| 224 | ]))
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| 225 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 226 | self._Join(mdocs, '', ' '), ')')
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| 227 |
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| 228 | def _Obj(self, obj):
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| 229 | # type: (Obj) -> MeasuredDoc
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| 230 | chain = [] # type: List[MeasuredDoc]
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| 231 | cur = obj
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| 232 | while cur is not None:
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| 233 | mdocs = self._DictMdocs(cur.d)
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| 234 | chain.append(
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| 235 | self._Surrounded('(', self._Join(mdocs, ',', ' '), ')'))
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| 236 | cur = cur.prototype
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| 237 | if cur is not None:
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| 238 | chain.append(AsciiText(' --> '))
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| 239 |
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| 240 | return _Concat(chain)
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| 241 |
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| 242 | def _Value(self, val):
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| 243 | # type: (value_t) -> MeasuredDoc
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| 244 |
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| 245 | with tagswitch(val) as case:
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| 246 | if case(value_e.Null):
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| 247 | return self._Styled(self.null_style, AsciiText('null'))
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| 248 |
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| 249 | elif case(value_e.Bool):
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| 250 | b = cast(value.Bool, val).b
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| 251 | return self._Styled(self.bool_style,
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| 252 | AsciiText('true' if b else 'false'))
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| 253 |
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| 254 | elif case(value_e.Int):
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| 255 | i = cast(value.Int, val).i
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| 256 | return self._Styled(self.int_style, AsciiText(mops.ToStr(i)))
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| 257 |
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| 258 | elif case(value_e.Float):
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| 259 | f = cast(value.Float, val).f
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| 260 | return self._Styled(self.float_style,
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| 261 | AsciiText(FloatString(f)))
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| 262 |
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| 263 | elif case(value_e.Str):
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| 264 | s = cast(value.Str, val).s
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| 265 | return self._StringLiteral(s)
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| 266 |
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| 267 | elif case(value_e.Range):
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| 268 | r = cast(value.Range, val)
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| 269 | type_name = self._Styled(self.type_style,
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| 270 | AsciiText(ValType(r)))
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| 271 | mdocs = [
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| 272 | AsciiText(str(r.lower)),
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| 273 | AsciiText('..<'),
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| 274 | AsciiText(str(r.upper))
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| 275 | ]
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| 276 | return self._SurroundedAndPrefixed('(', type_name, ' ',
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| 277 | self._Join(mdocs, '', ' '),
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| 278 | ')')
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| 279 |
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| 280 | elif case(value_e.List):
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| 281 | vlist = cast(value.List, val)
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| 282 | heap_id = j8.HeapValueId(vlist)
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| 283 | if self.visiting.get(heap_id, False):
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| 284 | return _Concat([
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| 285 | AsciiText('['),
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| 286 | self._Styled(self.cycle_style, AsciiText('...')),
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| 287 | AsciiText(']')
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| 288 | ])
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| 289 | else:
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| 290 | self.visiting[heap_id] = True
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| 291 | result = self._YshList(vlist)
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| 292 | self.visiting[heap_id] = False
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| 293 | return result
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| 294 |
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| 295 | elif case(value_e.Dict):
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| 296 | vdict = cast(value.Dict, val)
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| 297 | heap_id = j8.HeapValueId(vdict)
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| 298 | if self.visiting.get(heap_id, False):
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| 299 | return _Concat([
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| 300 | AsciiText('{'),
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| 301 | self._Styled(self.cycle_style, AsciiText('...')),
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| 302 | AsciiText('}')
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| 303 | ])
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| 304 | else:
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| 305 | self.visiting[heap_id] = True
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| 306 | result = self._YshDict(vdict)
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| 307 | self.visiting[heap_id] = False
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| 308 | return result
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| 309 |
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| 310 | elif case(value_e.BashArray):
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| 311 | sparse = cast(value.BashArray, val)
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| 312 | return self._BashArray(sparse)
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| 313 |
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| 314 | elif case(value_e.InternalStringArray):
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| 315 | varray = cast(value.InternalStringArray, val)
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| 316 | return self._InternalStringArray(varray)
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| 317 |
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| 318 | elif case(value_e.BashAssoc):
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| 319 | vassoc = cast(value.BashAssoc, val)
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| 320 | return self._BashAssoc(vassoc)
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| 321 |
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| 322 | elif case(value_e.Obj):
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| 323 | vaobj = cast(Obj, val)
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| 324 | heap_id = j8.HeapValueId(vaobj)
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| 325 | if self.visiting.get(heap_id, False):
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| 326 | return _Concat([
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| 327 | AsciiText('('),
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| 328 | self._Styled(self.cycle_style, AsciiText('...')),
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| 329 | AsciiText(')')
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| 330 | ])
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| 331 | else:
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| 332 | self.visiting[heap_id] = True
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| 333 | result = self._Obj(vaobj)
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| 334 | self.visiting[heap_id] = False
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| 335 | return result
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| 336 |
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| 337 | # Bug fix: these types are GLOBAL singletons in C++. This means
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| 338 | # they have no object ID, so j8.ValueIdString() will CRASH on them.
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| 339 |
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| 340 | elif case(value_e.Stdin, value_e.Interrupted):
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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 | return _Concat([AsciiText('<'), type_name, AsciiText('>')])
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| 344 |
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| 345 | else:
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| 346 | type_name = self._Styled(self.type_style,
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| 347 | AsciiText(ValType(val)))
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| 348 | id_str = j8.ValueIdString(val)
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| 349 | return _Concat(
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| 350 | [AsciiText('<'), type_name,
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| 351 | AsciiText(id_str + '>')])
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| 352 |
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| 353 |
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| 354 | # vim: sw=4
|