misc/vim/syntax/factor.vim

   1 " Vim syntax file
   2 " Language: Factor
   3 " Maintainer: Alex Chapman <chapman.alex@gmail.com>
   4 " Last Change: 2020 Sep 30
   5 " Minimum Version: 600
   6
   7 " Factor |syntax| file guide & conventions:
   8 "
   9 " Inside |:comment|s, words in |bars| contain |:help| keywords.
  10 "   |K| looks these up.
  11 "
  12 " Alignment columns should normally occur on multiples of 4.
  13 " Align Vim syntax alternatives naturally. E.g.:
  14 "   "syn match   ..."
  15 "   "syn cluster ..."
  16 "   "syn region  ..."
  17 " Align |:syn-start|, |:syn-skip|, and |:syn-end| on their patterns.
  18 " ":echo (col('.') - 1) % 4" is handy here.
  19 "
  20 " All syntax patterns (|:syn-pattern|) are "very magic" (|/\v|).
  21 " Escape all literal [^[:alnum:]_-!:;] characters in these patterns.
  22 " (Not escaping [-!:;] characters risks forward-incompatibility,
  23 "   but fixes if an incompatibile Vim arises would be trivial,
  24 "   and Factor likes these characters.)
  25 "
  26 " Syntax groups ending in "Error" match errors via |:syn-priority|,
  27 "   and should normally |:hi-link| to "Error".
  28 "
  29 " Syntax groups named "{group-name}Trans" are |:syn-transparent|.
  30 "
  31 " |:syn-cluster|s named "{group-name}" mean to allow |:syn-contains| use of
  32 "   |:syn-priority|-based error-detection.
  33 " This still applies to clusters named "{group-name}Trans".
  34 "
  35 " Syntax groups "{group-name}Skip" have the form:
  36 " "syn match {group-name}Skip /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup={group-name} transparent contained"
  37 " Specifying "nextgroup={group-name}Skip skipempty" works like a Factor-aware
  38 "   "nextgroup={group-name} skipwhite skipempty"
  39 "   with required initial space (not optional).
  40 " "{cluster-name}Skip" works similarly, but with "nextgroup=@{cluster-name}".
  41 "
  42 " Vim's syntax highlighting freaks at paired "/\v\(" and "/\v\)". ☹
  43 " Switching into very nomagic (with "/\V(\v/" or "/\V)\v") averts that,
  44 "   as non-escaped parentheses don't extend pattern regions.
  45 "
  46 " A handy testing command:
  47 " "echo join(map(synstack(line('.'),col('.')),{sn->{i,s->{t->sn(s).(s==t?'':' ('.sn(t).')')}(synIDtrans(s))}}({s->synIDattr(s,'name')})),' -> ')"
  48 "   Outputs in the form "hi<...> trans<...> lo<...>":
  49 "     "hi": syntax group
  50 "     "trans": transparent syntax group (if not applicable, same as "hi")
  51 "     "lo": highlight group
  52
  53 if exists('b:current_syntax')
  54   finish
  55 endif
  56
  57 " Factor is case sensitive.
  58 syn case match
  59
  60 syn match   factorWord   /\v<\S+>/  contains=@factorWord transparent display
  61 syn cluster factorClusterNoComment  contains=factorWord,@factorMultilineComment,@factorClusterValue,factorBoolean,factorBreakpoint,factorDeclaration,factorCallQuotation,factorExecute,factorCallNextMethod,@factorWordOps,factorAlien,factorSlot,factorTuple,factorErrorSyn,factorStruct
  62 syn cluster factorCluster           contains=@factorComment,@factorClusterNoComment
  63
  64 " A crash course on Factor's lexer:
  65 "
  66 " The "lexer" vocabulary parses lines (arrays of strings) into tokens.
  67 " Tokens are non-space strings, effectively words.
  68 " The "lexer" class holds lex state.
  69 " Lexer method "skip-word" advances to the next space
  70 "     while also counting leading double quotation marks as their own words.
  71 "   I.e., this advances to the end of the current token
  72 "     (if currently at a token, otherwise nothing changes).
  73 " Method "skip-blank" advances to the next non-space
  74 "     while also skipping shebangs at the beginning of the first line.
  75 "   I.e., this advances to the start of the next token
  76 "     (if one is present, otherwise it advances to the line's end).
  77 " "(parse-raw)" advances a lexer through an immediate token via "skip-word",
  78 "   and returns the (sub)token advanced through.
  79 "   Note that this will not advance a lexer at space,
  80 "     and an empty string will be returned.
  81 " "next-line" advances a lexer to the start of the next line,
  82 "   adding an effectively empty line to the end (as an EOF state).
  83 " "parse-raw" advances a lexer through the next token,
  84 "   first via alternating "skip-blank" & "next-line" if the line ended,
  85 "     then via "(parse-raw)",
  86 "   and returns it if found, otherwise (i.e. upon EOF) returning "f".
  87 "     Note that the lexer will be advanced to EOF if "f" is returned.
  88 " Comments are (unprocessed) remainders of lines, after a "!" word.
  89 " "parse-token" advances a lexer though the next token via "parse-raw",
  90 "   then returns it if found, otherwise returning "f".
  91 "   while also advancing through comments
  92 "     via mutual recursion with "skip-comment".
  93 "   "[ skip-comment ] call( lexer str -- str' )" tests if a token is "!",
  94 "     returning that token if so,
  95 "     otherwise first advancing a lexer to the next line via "next-line"
  96 "         (i.e. discarding the rest of the current line)
  97 "       and then advancing it via "parse-token" & returning that token,
  98 "     ensuring the return of "parse-token"'s desired non-comment token.
  99 " The "lexer" dynamic variable holds the ambient lexer.
 100 " "?scan-token" advances the ambient lexer through the next token
 101 "     via "parse-token",
 102 "   and returns it if found, otherwise returning "f".
 103 " "scan-token" advances the ambient lexer through the next token
 104 "     via "?scan-token",
 105 "   and returns it if found, otherwise throwing an exception.
 106 " All other words in the "lexer" vocabulary read via "scan-token", if at all.
 107 " So! To know when double quotes & exclamation marks aren't special,
 108 "   grep for "parse-raw". (Mostly. To be certain, grep for "lexer".)
 109
 110 syn cluster factorComment           contains=factorComment
 111 syn cluster factorCommentContents   contains=factorTodo,@Spell
 112 syn match   factorTodo              /\v(TODO|FIXME|XXX):=/ contained
 113
 114 syn cluster factorDefnContents      contains=@factorCluster
 115
 116 syn region  factorDefn            start=/\v<%(SYNTAX|%(MACRO|MEMO|TYPED)?:?):>/                 matchgroup=factorDefnDelims     end=/\v<;>/ contains=factorDefnDelims,@factorDefnContents
 117 syn region  factorDefnDelims      start=/\v<%(SYNTAX|%(MACRO|MEMO|TYPED)?:?):>/ end=/\v<\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty contained
 118 syn region  factorMethod          start=/\v<M:>/                                                matchgroup=factorMethodDelims     end=/\v<;>/ contains=factorMethodDelims,@factorDefnContents
 119 syn region  factorMethodDelims    start=/\v<M:>/               skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment skipempty keepend contained
 120 syn region  factorLocalsMethod    start=/\v<M::>/                                               matchgroup=factorLocalsMethodDelims     end=/\v<;>/ contains=factorLocalsMethodDelims,@factorDefnContents
 121 syn region  factorLocalsMethodDelims    start=/\v<M::>/        skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty keepend contained
 122 syn region  factorGeneric         start=/\v<%(GENERIC|MATH|PRIMITIVE):>/                        end=/\v<\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty
 123 syn region  factorGenericN matchgroup=factorGenericN  start=/\v<GENERIC\#:>/   skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\d+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty keepend
 124
 125 syn region  factorPDefn           start=/\v<%(SYNTAX|%(MACRO|MEMO|TYPED)?:?):>/                 matchgroup=factorPDefnDelims    end=/\v<;>/ contains=factorPDefnDelims,@factorDefnContents contained
 126 syn region  factorPDefnDelims     start=/\v<%(SYNTAX|%(MACRO|MEMO|TYPED)?:?):>/ end=/\v<\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty contained
 127 syn region  factorPMethod         start=/\v<M:>/                                                matchgroup=factorPMethodDelims  end=/\v<;>/ contains=factorPMethodDelims,@factorDefnContents contained
 128 syn region  factorPMethodDelims   start=/\v<M:>/               skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment skipempty keepend contained
 129 syn region  factorPLocalsMethod   start=/\v<M::>/                                               matchgroup=factorPLocalsMethodDelims    end=/\v<;>/ contains=factorPLocalsMethodDelims,@factorDefnContents contained
 130 syn region  factorPLocalsMethodDelims   start=/\v<M::>/        skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty keepend contained
 131 syn region  factorPGeneric        start=/\v<%(GENERIC|MATH|PRIMITIVE):>/                        end=/\v<\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty contained
 132 syn region  factorPGenericN matchgroup=factorPGenericN    start=/\v<GENERIC\#:>/   skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\d+>/ contains=@factorComment nextgroup=factorStackEffectSkip skipempty keepend contained
 133
 134 syn region  factorPrivate matchgroup=factorPrivate start=/\v<\<PRIVATE>/ end=/\v<PRIVATE\>>/ contains=@factorDefnContents,factorPDefn,factorPMethod,factorPLocalsMethod,factorPGeneric,factorPGenericN skipempty keepend
 135
 136 syn cluster factorClusterValue      contains=factorBreakpoint,factorBoolean,factorFrySpecifier,factorChar,@factorString,@factorNumber,factorBackslash,factorMBackslash,factorLiteral,factorLiteralBlock,@factorStackEffect,@factorQuotation,@factorArray
 137
 138 syn keyword factorBoolean           f t
 139 syn keyword factorBreakpoint        B
 140 syn keyword factorFrySpecifier      @ _ contained
 141 syn keyword factorDeclaration       delimiter deprecated final flushable foldable inline recursive
 142 syn match   factorCallQuotation     /\v<call\V(\v/me=e-1    nextgroup=@factorStackEffect
 143 syn match   factorExecute           /\v<execute\V(\v/me=e-1 nextgroup=@factorStackEffect
 144 syn keyword factorCallNextMethod    call-next-method
 145
 146 syn region  factorChar        start=/\v<CHAR:>/ end=/\v\S+>/
 147
 148 syn cluster factorString            contains=factorString,factorTriString,factorPrefixedString
 149 syn match   factorEscape            /\v\\([\\astnrbvf0e\"]|u\x{6}|u\{\S+}|x\x{2})/  contained display
 150 syn region  factorString            matchgroup=factorStringDelims         start=/\v<"/                 skip=/\v\\"/ end=/\v"/   contains=factorEscape
 151 " Removed Factor syntax.
 152 syn region  factorTriString         matchgroup=factorTriStringDelims      start=/\v<"""/               skip=/\v\\"/ end=/\v"""/ contains=factorEscape
 153 syn region  factorPrefixedString    matchgroup=factorPrefixedStringDelims start=/\v<[^[:blank:]"]+"/   skip=/\v\\"/ end=/\v"/   contains=factorEscape
 154
 155 " Vocabulary: multiline
 156 " This vocabulary reads the ambient lexer without "parse-raw".
 157 syn cluster factorString            add=factorMultilineString,factorHereDocString,factorPrefixedMultilineString
 158 syn region  factorMultilineString   matchgroup=factorMultilineStringDelims    start=/\v<\[\z(\={0,6})\[>/   end=/\v\]\z1\]/
 159 syn region  factorHereDoc           matchgroup=factorHereDocDelims            start=/\v<STRING:\s+\S+>/     end=/\v^;$/
 160 syn region  factorHereDocString     matchgroup=factorHereDocStringDelims      start=/\v<HEREDOC:\s+\z(.*)>/ end=/\v^\z1$/
 161 syn region  factorPrefixedMultilineString matchgroup=factorPrefixedMultilineStringDelims  start=/\v<[^[\][:blank:]]+\[\z(\={0,6})\[>/   end=/\v\]\z1\]/
 162 " These comments are normal syntax words, so no lexer privilege for them.
 163 " (Hence, no "syn cluster factorComment" membership.)
 164 syn cluster factorMultilineComment  contains=factorMultilineComment,factorMultilineCComment
 165 syn region  factorMultilineComment  matchgroup=factorMultilineCommentDelims   start=/\v<!\[\z(\={0,6})\[>/  end=/\v\]\z1\]/ contains=@factorCommentContents keepend
 166 syn region  factorMultilineCComment matchgroup=factorMultilineCCommentDelims  start=/\v<\/\*>/              end=/\v\*\//    contains=@factorCommentContents keepend
 167
 168 syn cluster factorReal                  contains=@factorInteger,@factorFloat,@factorRatio,@factorBin,@factorOct,@factorHex,factorNan
 169 syn cluster factorNumber                contains=@factorReal,factorComplex
 170 syn cluster factorInteger               contains=factorInteger
 171 if !exists('g:factor_syn_no_error') " more general
 172   syn cluster factorInteger             add=factorIntegerError
 173   " + "\d|," with contained "\d"
 174   syn match   factorIntegerError        /\v<[+-]=%(\d|,){-}\d%(\d|,)*>/
 175 endif
 176 " + "\d|," with leading "\d" and no trailing ","
 177 syn match   factorInteger               /\v<[+-]=\d%(\d|,)*,@1<!>/
 178 if !exists('g:factor_syn_no_error') " more general
 179   syn cluster factorFloat               add=factorFloatError
 180   syn match   factorFloatError          /\v<[+-]=%(\S{-}\d&%(\d|,)*%([eE][+-]=%(\d|,)*|\.%(\d|,)*%([eE][+-]=%(\d|,)*)?)|\.%(\d|,)+%([eE][+-]=%(\d|,)*)?)>/
 181 endif
 182 syn cluster factorFloat                 contains=factorFloat
 183 " exponent is followed by valid integer of radix 10
 184 " float of
 185 "   {valid integer,
 186 "     {"[eE]" exponent}
 187 "     or {"." mantissa sep, ? "[eE]" exponent}}
 188 "   or {"." mantissa sep, ? "[eE]" exponent}
 189 syn match   factorFloat                 /\v<[+-]=%(\d%(\d|,)*,@1<!%([eE][+-]=\d%(\d|,)*,@1<!|\.%(\d%(\d|,)*,@1<!)?%([eE][+-]=\d%(\d|,)*,@1<!)?)|\.\d%(\d|,)*,@1<!%([eE][+-]=\d%(\d|,)*,@1<!)?)>/
 190 syn cluster factorRatio                 contains=factorRatio
 191 if !exists('g:factor_syn_no_error') " more general
 192   syn cluster factorRatio               add=factorRatioError
 193   syn match   factorRatioError          /\v<[+-]=%(\S{-}\d.{-}\/&%(\d|,)*\.?%(\d|,)*%([+-]%(\d|,)*)?)\/[+-]=%(\S{-}\d&%(\d|,)*\.?%(\d|,)*%([eE][+-]=%(\d|,)*)?)>/
 194 endif
 195 syn match   factorRatio                 /\v<([+-]=)\d%(\d|,)*,@1<!%(\1@=[+-](\d%(\d|,)*,@1<!)\/\2@!\d%(\d|,)*,@1<!|\/%(\d%(\d|,)*,@1<!%(\.%(\d%(\d|,)*,@1<!)?)?|\.\d%(\d|,)*,@1<!)%([eE][+-]=\d%(\d|,)*,@1<!)?)%(\/0)@2<!>/
 196 syn region  factorComplex         start=/\v<C\{>/   end=/\v<\}>/    contains=@factorReal
 197 syn cluster factorBin                   contains=factorBin
 198 if !exists('g:factor_syn_no_error')
 199   syn cluster factorBin                 add=factorBinError
 200   syn match   factorBinError            /\v<[+-]=0[bB]%(\S{-}\w&%(\w|,)*\.?%(\w|,)*%([pP][+-]=%(\w|,)*)?)>/
 201 endif
 202 " basically a float, but with a radix and no integer case to not match
 203 syn match   factorBin                   /\v<[+-]=0[bB]%([01][01,]*,@1<!%(\.%([01][01,]*,@1<!)?)?|\.[01][01,]*,@1<!)%([pP][+-]=\d%(\d|,)*,@1<!)?>/
 204 syn cluster factorOct                   contains=factorOct
 205 if !exists('g:factor_syn_no_error')
 206   syn cluster factorOct                 add=factorOctError
 207   syn match   factorOctError            /\v<[+-]=0[oO]%(\S{-}\o&%(\w|,)*\.?(\w|,)*%([pP][+-]=%(\w|,)*)?)>/
 208 endif
 209 syn match   factorOct                   /\v<[+-]=0[oO]%(\o%(\o|,)*,@1<!%(\.%(\o%(\o|,)*,@1<!)?)?|\.\o%(\o|,)*,@1<!)%([pP][+-]=\d%(\d|,)*,@1<!)?>/
 210 syn cluster factorHexNoRadix            contains=factorHexNoRadix
 211 syn cluster factorHex                   contains=factorHex
 212 if !exists('g:factor_syn_no_error')
 213   syn cluster factorHexNoRadix          add=factorHexNoRadixError
 214   syn cluster factorHex                 add=factorHexError
 215   syn match   factorHexNoRadixError     /\v<[+-]=%(\S{-}\x&%(\w|,)*\.?(\w|,)*%([pP][+-]=%(\w|,)*)?)>/   contained
 216   syn match   factorHexError            /\v<[+-]=0[xX]%(\S{-}\x&%(\x|,)*\.?(\x|,)*%([pP][+-]=%(\w|,)*)?)>/
 217 endif
 218 syn match   factorHexNoRadix            /\v<[+-]=%(\x%(\x|,)*,@1<!%(\.%(\x%(\x|,)*,@1<!)?)?|\.\x%(\x|,)*,@1<!)%([pP][+-]=\d%(\d|,)*,@1<!)?>/  contained
 219 syn match   factorHex                   /\v<[+-]=0[xX]%(\x%(\x|,)*,@1<!%(\.%(\x%(\x|,)*,@1<!)?)?|\.\x%(\x|,)*,@1<!)%([pP][+-]=\d%(\d|,)*,@1<!)?>/
 220 syn region  factorNan matchgroup=factorNan    start=/\v<NAN:>/ matchgroup=NONE skip=/\v<!>.*/   end=/\v<\S+>/   contains=@factorComment,@factorHexNoRadix keepend
 221
 222 syn region  factorBackslash       start=/\v<\\>/                    end=/\v<\S+>/   contains=@factorComment
 223 syn region  factorMBackslash      start=/\v<M\\>/  skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment keepend
 224 syn region  factorLiteral         start=/\v<\$>/                    end=/\v<\S+>/   contains=@factorComment
 225 syn region  factorLiteralBlock    start=/\v<\$\[>/                  end=/\v<\]>/    contains=@factorComment
 226
 227 syn region  factorIn      start=/\v<IN:>/       end=/\v<\S+>/   contains=@factorComment
 228 syn region  factorUse     start=/\v<USE:>/      end=/\v<\S+>/   contains=@factorComment
 229 syn region  factorUnuse   start=/\v<UNUSE:>/    end=/\v<\S+>/   contains=@factorComment
 230
 231 syn region  factorUsing           start=/\v<USING:>/                        end=/\v<;>/     contains=@factorComment
 232 syn region  factorQualified       start=/\v<QUALIFIED:>/                    end=/\v<\S+>/   contains=@factorComment
 233 syn region  factorQualifiedWith   start=/\v<QUALIFIED-WITH:>/  skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment keepend
 234 syn region  factorExclude         start=/\v<EXCLUDE:>/                      end=/\v<;>/     contains=@factorComment
 235 syn region  factorFrom            start=/\v<FROM:>/                         end=/\v<;>/     contains=@factorComment
 236 syn region  factorRename          start=/\v<RENAME:>/      skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+%(\_\s+%(!>.*)?)+\=\>%(\_\s+%(!>.*)?)+\S+>/  contains=@factorComment keepend
 237 syn region  factorSingletons      start=/\v<SINGLETONS:>/                   end=/\v<;>/     contains=@factorComment
 238 syn region  factorSymbol          start=/\v<SYMBOL:>/                       end=/\v<\S+>/   contains=@factorComment
 239 syn region  factorSymbols         start=/\v<SYMBOLS:>/                      end=/\v<;>/     contains=@factorComment
 240 syn region  factorConstructor2    start=/\v<CONSTRUCTOR:>/                  end=/\v<;>/     contains=@factorComment,factorStackEffect
 241 syn region  factorIntersection    start=/\v<INTERSECTION:>/                 end=/\v<;>/     contains=@factorComment
 242 syn cluster factorSlotAttr              contains=factorSlotAttrInitial,factorSlotAttrReadOnly
 243 syn cluster factorTupleSlotAttr         contains=@factorSlotAttr
 244 syn match   factorTupleSlotName         /\v<\S+;@1<!>/ nextgroup=factorTupleSlotClassSkip skipempty contained
 245 syn match   factorTupleSlotNameSkip     /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup=factorTupleSlotName transparent contained
 246 syn match   factorTupleSlotClass        /\v<\S+>/ nextgroup=factorTupleSlotAttrSkip skipempty contained
 247 " a class is optional, so let an attribute take priority if present
 248 syn match   factorTupleSlotClassSkip    /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup=factorTupleSlotClass,@factorTupleSlotAttr transparent contained
 249 syn region  factorTupleSlot matchgroup=factorTupleSlotDelims  start=/\v<\{>/                end=/\v<\}>/    contains=@factorComment,factorTupleSlotName,@factorTupleSlotAttr contained
 250 syn match   factorTupleHeader           /\v%(\_\s+%(!>.*)?)*\S+%(%(\_\s+%(!>.*)?)+\<%(\_\s+%(!>.*)?)+\S+)?>/  contains=@factorComment,@factorWord contained transparent
 251 syn match   factorTupleDelims           /\v<%(TUPLE|BUILTIN):>/ nextgroup=factorTupleHeader skipempty contained
 252 syn region  factorTuple           start=/\v<%(TUPLE|BUILTIN):>/ end=/\v<;>/     contains=@factorComment,factorTupleSlotName,factorTupleSlot,factorTupleDelims
 253 syn region  factorPredicate matchgroup=factorPredicateDelims  start=/\v<%(PREDICATE):>/     end=/\v<;>/     contains=@factorComment,factorTupleSlotName
 254 " Abnormally named because factor*Error is reserved for syntax errors.
 255 syn region  factorErrorSyn        start=/\v<ERROR:>/            end=/\v<;>/     contains=@factorComment
 256 syn region  factorUnion           start=/\v<UNION:>/            end=/\v<;>/     contains=@factorComment
 257 syn cluster factorStructSlotAttr        contains=@factorSlotAttr,factorStructSlotAttrBits
 258 syn match   factorStructSlotName        /\v<\S+>/ nextgroup=factorStructSlotTypeSkip skipempty contained
 259 syn match   factorStructSlotNameSkip    /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup=factorStructSlotName contained transparent
 260 syn match   factorStructSlotType        /\v<\S+>/ contained
 261 syn match   factorStructSlotTypeSkip    /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup=factorStructSlotType contained transparent
 262 syn region  factorStructSlot matchgroup=factorStructSlotDelims    start=/\v<\{>/     end=/\v<\}>/ contains=@factorComment,factorStructSlotName,@factorStructSlotAttr contained
 263 syn region  factorStruct matchgroup=factorStructDelims            start=/\v<%(UNION-STRUCT|STRUCT):>/   end=/\v<;>/ contains=@factorComment,factorStructSlot
 264
 265 syn match   factorSlotAttrReadOnly      /\v<read-only>/ contained
 266 syn match   factorSlotAttrInitial       /\v<initial:>%(\_\s+%(!>.*)?)+/ contains=@factorComment nextgroup=factorWord,@factorClusterValue contained
 267 syn match   factorStructSlotAttrBits    /\v<bits:>%(\_\s+%(!>.*)?)+/    contains=@factorComment nextgroup=factorWord,@factorReal contained
 268
 269 syn region  factorConstant        start=/\v<CONSTANT:>/                 end=/\v<\S+>/   contains=@factorComment
 270 syn region  factorAlias           start=/\v<ALIAS:>/     skip=/\v<!>.*/ end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment keepend
 271 syn region  factorSingleton       start=/\v<SINGLETON:>/                end=/\v<\S+>/   contains=@factorComment
 272 syn region  factorPostpone        start=/\v<POSTPONE:>/                 end=/\v<\S+>/   contains=@factorComment
 273 syn region  factorDefer           start=/\v<DEFER:>/                    end=/\v<\S+>/   contains=@factorComment
 274 syn region  factorForget          start=/\v<FORGET:>/                   end=/\v<\S+>/   contains=@factorComment
 275 syn region  factorMixin           start=/\v<MIXIN:>/                    end=/\v<\S+>/   contains=@factorComment
 276 syn region  factorInstance        start=/\v<INSTANCE:>/    skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment keepend
 277 syn region  factorHook            start=/\v<HOOK:>/    skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment nextgroup=factorStackEffectSkip skipempty keepend
 278 syn region  factorMain            start=/\v<MAIN:>/                     end=/\v<\S+>/   contains=@factorComment
 279 syn region  factorConstructor     start=/\v<C:>/       skip=/\v<!>.*/   end=/\v<\S+%(\_\s+%(!>.*)?)+\S+>/   contains=@factorComment keepend
 280 syn region  factorAlien matchgroup=factorAlien start=/\v<ALIEN:>/ matchgroup=NONE   end=/\v<\S+>/  contains=@factorComment,@factorHexNoRadix
 281 syn region  factorSlot            start=/\v<SLOT:>/                     end=/\v<\S+>/   contains=@factorComment
 282
 283 syn cluster factorWordOps   contains=factorConstant,factorAlias,factorSingleton,factorSingletons,factorSymbol,factorSymbols,factorPostpone,factorDefer,factorForget,factorMixin,factorInstance,factorHook,factorMain,factorConstructor
 284
 285 "TODO:
 286 "misc:
 287 " HELP:
 288 " ARTICLE:
 289 "literals:
 290 " PRIMITIVE:
 291
 292 "C interface:
 293 " C-ENUM:
 294 " FUNCTION:
 295 " TYPEDEF:
 296 " LIBRARY:
 297 "#\ "
 298
 299 if !exists('g:factor_syn_no_error')
 300   syn match   factorStackEffectRequired /\v<\V(\@!\v\S+>/    contained
 301 endif
 302 syn cluster factorStackEffectContents   contains=@factorComment,factorStackEffectDelims,factorStackEffectVar,factorStackEffectType,factorStackEffectRowVar
 303 syn cluster factorStackEffect           contains=factorStackEffect
 304 " Erroring on stack effects without a "--" separator would be nice.
 305 " Unfortunately, that sort of vacuous detection is above Vim's pay-grade,
 306 "   especially when stack effects can be nested arbitrarily via types.
 307 syn match   factorStackEffectSkip       /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup=factorStackEffectRequired,@factorStackEffect transparent contained
 308 syn region  factorStackEffect       matchgroup=factorStackEffectDelims    start=/\v\V(\v>/  end=/\v<\V)\v>/ contains=@factorStackEffectContents
 309 syn match   factorStackEffectVar        /\v<\S+>/           contained
 310 " Note that ":!" parses to the "!" word and doesn't lex as a comment.
 311 " Also, even though we take any value, the leading ":" breaking the word
 312 "   boundary means a lot of our nicer syntax patterns don't match on
 313 "   "factorStackEffectType".
 314 " syn cluster factorStackEffectType contains=factorWord,@factorStackEffect
 315 syn cluster factorStackEffectType       contains=factorWord,@factorClusterValue
 316 syn match   factorStackEffectTypeSkip   /\v%(\_\s+%(!>.*)?)*/ contains=@factorComment nextgroup=@factorStackEffectType transparent contained
 317 syn match   factorStackEffectVar        /\v<\S+:>/          nextgroup=factorStackEffectTypeSkip skipempty contained
 318 syn match   factorStackEffectType       /\v<:/              nextgroup=@factorStackEffectType contained
 319 syn match   factorStackEffectRowVar     /\v<\.\.\S+>/       contained
 320 syn match   factorStackEffectRowVar     /\v<\.\.\S+:>/      nextgroup=factorStackEffectTypeSkip skipempty contained
 321 syn match   factorStackEffectDelims     /\v<-->/            contained
 322 if !exists('g:factor_syn_no_error')
 323   syn cluster factorStackEffectContents add=factorStackEffectError
 324   syn keyword factorStackEffectError    (                   contained
 325 endif
 326
 327 " adapted from lisp.vim
 328 if exists('g:factor_syn_no_rainbow')
 329   syn cluster factorQuotation   contains=factorQuotation
 330   syn region  factorQuotation      matchgroup=factorDelimiter start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=ALL
 331 else
 332   syn cluster factorQuotation   contains=factorQuotation0
 333   syn region  factorQuotation0            matchgroup=hlLevel0 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation1,factorArray1
 334   syn region  factorQuotation1 contained  matchgroup=hlLevel1 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation2,factorArray2
 335   syn region  factorQuotation2 contained  matchgroup=hlLevel2 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation3,factorArray3
 336   syn region  factorQuotation3 contained  matchgroup=hlLevel3 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation4,factorArray4
 337   syn region  factorQuotation4 contained  matchgroup=hlLevel4 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation5,factorArray5
 338   syn region  factorQuotation5 contained  matchgroup=hlLevel5 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation6,factorArray6
 339   syn region  factorQuotation6 contained  matchgroup=hlLevel6 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation7,factorArray7
 340   syn region  factorQuotation7 contained  matchgroup=hlLevel7 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation8,factorArray8
 341   syn region  factorQuotation8 contained  matchgroup=hlLevel8 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation9,factorArray9
 342   syn region  factorQuotation9 contained  matchgroup=hlLevel9 start=/\v<%(%(%('|\$|)\[)|\[%(let|\|))>/  end=/\v<\]>/    contains=@factorCluster,factorQuotation0,factorArray0
 343 endif
 344
 345 if exists('g:factor_syn_no_rainbow')
 346   syn cluster factorArray       contains=factorArray
 347   syn region  factorArray          matchgroup=factorDelimiter start=/\v<%(\$|[-[:alnum:]]+)?\{>/        end=/\v<\}>/    contains=ALL
 348 else
 349   syn cluster factorArray       contains=factorArray0
 350   syn region  factorArray0               matchgroup=hlLevel0 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray1,factorQuotation1
 351   syn region  factorArray1     contained matchgroup=hlLevel1 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray2,factorQuotation2
 352   syn region  factorArray2     contained matchgroup=hlLevel2 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray3,factorQuotation3
 353   syn region  factorArray3     contained matchgroup=hlLevel3 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray4,factorQuotation4
 354   syn region  factorArray4     contained matchgroup=hlLevel4 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray5,factorQuotation5
 355   syn region  factorArray5     contained matchgroup=hlLevel5 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray6,factorQuotation6
 356   syn region  factorArray6     contained matchgroup=hlLevel6 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray7,factorQuotation7
 357   syn region  factorArray7     contained matchgroup=hlLevel7 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray8,factorQuotation8
 358   syn region  factorArray8     contained matchgroup=hlLevel8 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray9,factorQuotation9
 359   syn region  factorArray9     contained matchgroup=hlLevel9 start=/\v<%(\$|[-[:alnum:]]+)?\{>/         end=/\v<\}>/    contains=@factorCluster,factorArray0,factorQuotation0
 360 endif
 361
 362 if !exists('g:factor_syn_no_error')
 363   syn match   factorBracketError    /\v<\]>/
 364   syn match   factorBracketError    /\v<\}>/
 365 endif
 366
 367 function! FactorSynDefineComment() abort
 368   syn match   factorComment         /\v<!>.*$/ contains=@factorCommentContents
 369   syn match   factorShebang         /\v%^\#!.*$/ display
 370   if !exists('g:factor_syn_no_error')
 371     syn match   factorShebangError  /\v%^\#!\S+/
 372   endif
 373 endfunction
 374
 375 if !exists('g:factor_syn_no_comment')
 376   call FactorSynDefineComment()
 377 endif
 378
 379 " Syntax that bypasses comment lexing.
 380 function! FactorSynDefineAfterComment() abort
 381 endfunction
 382
 383 if !exists('g:factor_syn_no_after_comment')
 384   call FactorSynDefineAfterComment()
 385 endif
 386
 387 syn sync lines=100
 388
 389 if !exists('g:factor_syn_no_init')
 390   command -nargs=+ -bar HiLink hi def link <args>
 391
 392   if !exists('g:factor_syn_no_error')
 393     HiLink factorShebangError           Error
 394     HiLink factorBracketError           Error
 395     HiLink factorIntegerError           Error
 396     HiLink factorFloatError             Error
 397     HiLink factorRatioError             Error
 398     HiLink factorBinError               Error
 399     HiLink factorHexNoRadixError        Error
 400     HiLink factorHexError               Error
 401     HiLink factorOctError               Error
 402     HiLink factorStackEffectRequired    Error
 403     HiLink factorStackEffectError       Error
 404   endif
 405
 406   HiLink   factorComment                Comment
 407   HiLink   factorMultilineComment       factorComment
 408   HiLink   factorMultilineCommentDelims factorMultilineComment
 409   HiLink   factorMultilineCComment      factorComment
 410   HiLink   factorMultilineCCommentDelims factorMultilineCComment
 411   HiLink   factorShebang                PreProc
 412   HiLink   factorStackEffect            Type
 413   HiLink   factorStackEffectDelims      Delimiter
 414   HiLink   factorStackEffectVar         Identifier
 415   HiLink   factorStackEffectRowVar      factorStackEffectVar
 416   HiLink   factorStackEffectType        Type
 417   HiLink   factorTodo                   Todo
 418   HiLink   factorInclude                Include
 419   HiLink   factorWord                   Keyword
 420   HiLink   factorCallQuotation          Keyword
 421   HiLink   factorExecute                Keyword
 422   HiLink   factorCallNextMethod         Keyword
 423   HiLink   factorOperator               Operator
 424   HiLink   factorFrySpecifier           Operator
 425   HiLink   factorBoolean                Boolean
 426   HiLink   factorBreakpoint             Debug
 427   HiLink   factorDefnDelims             Typedef
 428   HiLink   factorMethodDelims           Typedef
 429   HiLink   factorLocalsMethodDelims     Typedef
 430   HiLink   factorGeneric                Typedef
 431   HiLink   factorGenericN               Typedef
 432   HiLink   factorConstructor            Typedef
 433   HiLink   factorConstructor2           Typedef
 434   HiLink   factorPrivate                Special
 435   HiLink   factorPDefnDelims            Special
 436   HiLink   factorPMethodDelims          Special
 437   HiLink   factorPLocalsMethodDelims    Special
 438   HiLink   factorPGeneric               Special
 439   HiLink   factorPGenericN              Special
 440   HiLink   factorEscape                 SpecialChar
 441   HiLink   factorString                 String
 442   HiLink   factorStringDelims           factorString
 443   HiLink   factorTriString              factorString
 444   HiLink   factorTriStringDelims        factorTriString
 445   HiLink   factorPrefixedString         factorString
 446   HiLink   factorPrefixedStringDelims   factorPrefixedString
 447   HiLink   factorMultilineString        factorString
 448   HiLink   factorMultilineStringDelims  Typedef
 449   HiLink   factorHereDoc                factorMultilineString
 450   HiLink   factorHereDocDelims          factorMultilineStringDelims
 451   HiLink   factorHereDocString          factorMultilineString
 452   HiLink   factorHereDocStringDelims    factorMultilineStringDelims
 453   HiLink   factorPrefixedMultilineString factorString
 454   HiLink   factorPrefixedMultilineStringDelims factorMultilineStringDelims
 455   HiLink   factorComplex                Number
 456   HiLink   factorRatio                  Number
 457   HiLink   factorBin                    Number
 458   HiLink   factorHexNoRadix             Number
 459   HiLink   factorHex                    Number
 460   HiLink   factorNan                    Number
 461   HiLink   factorOct                    Number
 462   HiLink   factorFloat                  Float
 463   HiLink   factorInteger                Number
 464   HiLink   factorUsing                  Include
 465   HiLink   factorQualified              Include
 466   HiLink   factorQualifiedWith          Include
 467   HiLink   factorExclude                Include
 468   HiLink   factorFrom                   Include
 469   HiLink   factorRename                 Include
 470   HiLink   factorUse                    Include
 471   HiLink   factorUnuse                  Include
 472   HiLink   factorIn                     Define
 473   HiLink   factorChar                   Character
 474   HiLink   factorDelimiter              Delimiter
 475   HiLink   factorBackslash              Special
 476   HiLink   factorMBackslash             Special
 477   HiLink   factorLiteral                Special
 478   HiLink   factorLiteralBlock           Special
 479   HiLink   factorDeclaration            Typedef
 480   HiLink   factorSymbol                 Define
 481   HiLink   factorSymbols                Define
 482   HiLink   factorConstant               Define
 483   HiLink   factorAlias                  Define
 484   HiLink   factorSingleton              Typedef
 485   HiLink   factorSingletons             Typedef
 486   HiLink   factorMixin                  Typedef
 487   HiLink   factorInstance               Typedef
 488   HiLink   factorHook                   Typedef
 489   HiLink   factorMain                   Define
 490   HiLink   factorPostpone               Define
 491   HiLink   factorDefer                  Define
 492   HiLink   factorForget                 Define
 493   HiLink   factorAlien                  Define
 494   HiLink   factorSlot                   Define
 495   HiLink   factorIntersection           Typedef
 496   HiLink   factorSlot                   Typedef
 497   HiLink   factorSlotDelims             factorSlot
 498   HiLink   factorSlotName               Identifier
 499   HiLink   factorSlotClass              Type
 500   HiLink   factorSlotType               factorSlotClass
 501   HiLink   factorSlotAttr               Special
 502   HiLink   factorSlotAttrInitial        factorSlotAttr
 503   HiLink   factorSlotAttrReadOnly       factorSlotAttr
 504   HiLink   factorStructSlotAttr         factorSlotAttr
 505   HiLink   factorStructSlotAttrBits     factorStructSlotAttr
 506   HiLink   factorPredicate              Typedef
 507   HiLink   factorPredicateDelims        factorTuple
 508   HiLink   factorTuple                  Typedef
 509   HiLink   factorTupleDelims            factorTuple
 510   HiLink   factorTupleSlot              factorSlot
 511   HiLink   factorTupleSlotDelims        factorSlotDelims
 512   HiLink   factorTupleSlotName          factorSlotName
 513   HiLink   factorTupleSlotClass         factorSlotClass
 514   HiLink   factorErrorSyn               Typedef
 515   HiLink   factorUnion                  Typedef
 516   HiLink   factorStruct                 Typedef
 517   HiLink   factorStructDelims           factorStruct
 518   HiLink   factorStructSlot             factorSlot
 519   HiLink   factorStructSlotDelims       factorSlotDelims
 520   HiLink   factorStructSlotName         factorSlotName
 521   HiLink   factorStructSlotType         factorSlotType
 522
 523   if &bg == 'dark'
 524     hi   hlLevel0 ctermfg=red           guifg=red1
 525     hi   hlLevel1 ctermfg=yellow        guifg=orange1
 526     hi   hlLevel2 ctermfg=green         guifg=yellow1
 527     hi   hlLevel3 ctermfg=cyan          guifg=greenyellow
 528     hi   hlLevel4 ctermfg=magenta       guifg=green1
 529     hi   hlLevel5 ctermfg=red           guifg=springgreen1
 530     hi   hlLevel6 ctermfg=yellow        guifg=cyan1
 531     hi   hlLevel7 ctermfg=green         guifg=slateblue1
 532     hi   hlLevel8 ctermfg=cyan          guifg=magenta1
 533     hi   hlLevel9 ctermfg=magenta       guifg=purple1
 534   else
 535     hi   hlLevel0 ctermfg=red           guifg=red3
 536     hi   hlLevel1 ctermfg=darkyellow    guifg=orangered3
 537     hi   hlLevel2 ctermfg=darkgreen     guifg=orange2
 538     hi   hlLevel3 ctermfg=blue          guifg=yellow3
 539     hi   hlLevel4 ctermfg=darkmagenta   guifg=olivedrab4
 540     hi   hlLevel5 ctermfg=red           guifg=green4
 541     hi   hlLevel6 ctermfg=darkyellow    guifg=paleturquoise3
 542     hi   hlLevel7 ctermfg=darkgreen     guifg=deepskyblue4
 543     hi   hlLevel8 ctermfg=blue          guifg=darkslateblue
 544     hi   hlLevel9 ctermfg=darkmagenta   guifg=darkviolet
 545   endif
 546 endif
 547 delcommand HiLink
 548
 549 let b:current_syntax = 'factor'
 550
 551 " vim: set ft=vim et sw=2 isk+=/,\\ :