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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 | " VHDL indent ('93 syntax)
" Language: VHDL
" Maintainer: Gerald Lai <laigera+vim?gmail.com>
" Version: 1.62
" Last Change: 2017 Oct 17
" URL: http://www.vim.org/scripts/script.php?script_id=1450
" only load this indent file when no other was loaded
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
" setup indent options for local VHDL buffer
setlocal indentexpr=GetVHDLindent()
setlocal indentkeys=!^F,o,O,0(,0)
setlocal indentkeys+==~begin,=~end\ ,=~end\ ,=~is,=~select,=~when
setlocal indentkeys+==~if,=~then,=~elsif,=~else
setlocal indentkeys+==~case,=~loop,=~for,=~generate,=~record,=~units,=~process,=~block,=~function,=~component,=~procedure
setlocal indentkeys+==~architecture,=~configuration,=~entity,=~package
" constants
" not a comment
let s:NC = '\%(--.*\)\@<!'
" end of string
let s:ES = '\s*\%(--.*\)\=$'
" no "end" keyword in front
let s:NE = '\%(\<end\s\+\)\@<!'
" option to disable alignment of generic/port mappings
if !exists("g:vhdl_indent_genportmap")
let g:vhdl_indent_genportmap = 1
endif
" option to disable alignment of right-hand side assignment "<=" statements
if !exists("g:vhdl_indent_rhsassign")
let g:vhdl_indent_rhsassign = 1
endif
" only define indent function once
if exists("*GetVHDLindent")
finish
endif
function GetVHDLindent()
" store current line & string
let curn = v:lnum
let curs = getline(curn)
" find previous line that is not a comment
let prevn = prevnonblank(curn - 1)
let prevs = getline(prevn)
while prevn > 0 && prevs =~ '^\s*--'
let prevn = prevnonblank(prevn - 1)
let prevs = getline(prevn)
endwhile
let prevs_noi = substitute(prevs, '^\s*', '', '')
" default indent starts as previous non-comment line's indent
let ind = prevn > 0 ? indent(prevn) : 0
" backup default
let ind2 = ind
" indent: special; kill string so it would not affect other filters
" keywords: "report" + string
" where: anywhere in current or previous line
let s0 = s:NC.'\<report\>\s*".*"'
if curs =~? s0
let curs = ""
endif
if prevs =~? s0
let prevs = ""
endif
" indent: previous line's comment position, otherwise follow next non-comment line if possible
" keyword: "--"
" where: start of current line
if curs =~ '^\s*--'
let pn = curn - 1
let ps = getline(pn)
if curs =~ '^\s*--\s' && ps =~ '--'
return indent(pn) + stridx(substitute(ps, '^\s*', '', ''), '--')
else
" find nextnonblank line that is not a comment
let nn = nextnonblank(curn + 1)
let ns = getline(nn)
while nn > 0 && ns =~ '^\s*--'
let nn = nextnonblank(nn + 1)
let ns = getline(nn)
endwhile
let n = indent(nn)
return n != -1 ? n : ind
endif
endif
" ****************************************************************************************
" indent: align generic variables & port names
" keywords: "procedure" + name, "generic", "map", "port" + "(", provided current line is part of mapping
" where: anywhere in previous 2 lines
" find following previous non-comment line
let pn = prevnonblank(prevn - 1)
let ps = getline(pn)
while pn > 0 && ps =~ '^\s*--'
let pn = prevnonblank(pn - 1)
let ps = getline(pn)
endwhile
if (curs =~ '^\s*)' || curs =~? '^\s*\%(\<\%(procedure\|generic\|map\|port\)\>.*\)\@<!\w\+\s*\w*\s*\((.*)\)*\s*\%(=>\s*\S\+\|:[^=]\@=\s*\%(\%(in\|out\|inout\|buffer\|linkage\)\>\|\s\+\)\)') && (prevs =~? s:NC.'\<\%(procedure\s\+\S\+\|generic\|map\|port\)\s*(\%(\s*\w\)\=' || (ps =~? s:NC.'\<\%(procedure\|generic\|map\|port\)'.s:ES && prevs =~ '^\s*('))
" align closing ")" with opening "("
if curs =~ '^\s*)'
return ind2 + stridx(prevs_noi, '(')
endif
let m = matchend(prevs_noi, '(\s*\ze\w')
if m != -1
return ind2 + m
else
if g:vhdl_indent_genportmap
return ind2 + stridx(prevs_noi, '(') + shiftwidth()
else
return ind2 + shiftwidth()
endif
endif
endif
" indent: align conditional/select statement
" keywords: variable + "<=" without ";" ending
" where: start of previous line
if prevs =~? '^\s*\S\+\s*<=[^;]*'.s:ES
if g:vhdl_indent_rhsassign
return ind2 + matchend(prevs_noi, '<=\s*\ze.')
else
return ind2 + shiftwidth()
endif
endif
" indent: backtrace previous non-comment lines for next smaller or equal size indent
" keywords: "end" + "record", "units"
" where: start of previous line
" keyword: ")"
" where: start of previous line
" keyword: without "<=" + ";" ending
" where: anywhere in previous line
" keyword: "=>" + ")" ending, provided current line does not begin with ")"
" where: anywhere in previous line
" _note_: indent allowed to leave this filter
let m = 0
if prevs =~? '^\s*end\s\+\%(record\|units\)\>'
let m = 3
elseif prevs =~ '^\s*)'
let m = 1
elseif prevs =~ s:NC.'\%(<=.*\)\@<!;'.s:ES || (curs !~ '^\s*)' && prevs =~ s:NC.'=>.*'.s:NC.')'.s:ES)
let m = 2
endif
if m > 0
let pn = prevnonblank(prevn - 1)
let ps = getline(pn)
while pn > 0
let t = indent(pn)
if ps !~ '^\s*--' && (t < ind || (t == ind && m == 3))
" make sure one of these is true
" keywords: variable + "<=" without ";" ending
" where: start of previous non-comment line
" keywords: "procedure", "generic", "map", "port"
" where: anywhere in previous non-comment line
" keyword: "("
" where: start of previous non-comment line
if m < 3 && ps !~? '^\s*\S\+\s*<=[^;]*'.s:ES
if ps =~? s:NC.'\<\%(procedure\|generic\|map\|port\)\>' || ps =~ '^\s*('
let ind = t
endif
break
endif
let ind = t
if m > 1
" find following previous non-comment line
let ppn = prevnonblank(pn - 1)
let pps = getline(ppn)
while ppn > 0 && pps =~ '^\s*--'
let ppn = prevnonblank(ppn - 1)
let pps = getline(ppn)
endwhile
" indent: follow
" keyword: "select"
" where: end of following previous non-comment line
" keyword: "type"
" where: start of following previous non-comment line
if m == 2
let s1 = s:NC.'\<select'.s:ES
if ps !~? s1 && pps =~? s1
let ind = indent(ppn)
endif
elseif m == 3
let s1 = '^\s*type\>'
if ps !~? s1 && pps =~? s1
let ind = indent(ppn)
endif
endif
endif
break
endif
let pn = prevnonblank(pn - 1)
let ps = getline(pn)
endwhile
endif
" indent: follow indent of previous opening statement, otherwise -sw
" keyword: "begin"
" where: anywhere in current line
if curs =~? s:NC.'\<begin\>'
" find previous opening statement of
" keywords: "architecture", "block", "entity", "function", "generate", "procedure", "process"
let s2 = s:NC.s:NE.'\<\%(architecture\|block\|entity\|function\|generate\|procedure\|process\)\>'
let pn = prevnonblank(curn - 1)
let ps = getline(pn)
while pn > 0 && (ps =~ '^\s*--' || ps !~? s2)
let pn = prevnonblank(pn - 1)
let ps = getline(pn)
if (ps =~? s:NC.'\<begin\>')
return indent(pn) - shiftwidth()
endif
endwhile
if (pn == 0)
return ind - shiftwidth()
else
return indent(pn)
endif
endif
" indent: +sw if previous line is previous opening statement
" keywords: "record", "units"
" where: anywhere in current line
if curs =~? s:NC.s:NE.'\<\%(record\|units\)\>'
" find previous opening statement of
" keyword: "type"
let s3 = s:NC.s:NE.'\<type\>'
if curs !~? s3.'.*'.s:NC.'\<\%(record\|units\)\>.*'.s:ES && prevs =~? s3
let ind = ind + shiftwidth()
endif
return ind
endif
" ****************************************************************************************
" indent: 0
" keywords: "architecture", "configuration", "entity", "library", "package"
" where: start of current line
if curs =~? '^\s*\%(architecture\|configuration\|entity\|library\|package\)\>'
return 0
endif
" indent: maintain indent of previous opening statement
" keyword: "is"
" where: start of current line
" find previous opening statement of
" keywords: "architecture", "block", "configuration", "entity", "function", "package", "procedure", "process", "type"
if curs =~? '^\s*\<is\>' && prevs =~? s:NC.s:NE.'\<\%(architecture\|block\|configuration\|entity\|function\|package\|procedure\|process\|type\)\>'
return ind2
endif
" indent: maintain indent of previous opening statement
" keyword: "then"
" where: start of current line
" find previous opening statement of
" keywords: "elsif", "if"
if curs =~? '^\s*\<then\>' && prevs =~? s:NC.'\%(\<elsif\>\|'.s:NE.'\<if\>\)'
return ind2
endif
" indent: maintain indent of previous opening statement
" keyword: "generate"
" where: start of current line
" find previous opening statement of
" keywords: "for", "if"
if curs =~? '^\s*\<generate\>' && prevs =~? s:NC.s:NE.'\%(\%(\<wait\s\+\)\@<!\<for\|\<if\)\>'
return ind2
endif
" indent: +sw
" keywords: "block", "process"
" removed: "begin", "case", "elsif", "if", "loop", "record", "units", "while"
" where: anywhere in previous line
if prevs =~? s:NC.s:NE.'\<\%(block\|process\)\>'
return ind + shiftwidth()
endif
" indent: +sw
" keywords: "architecture", "configuration", "entity", "package"
" removed: "component", "for", "when", "with"
" where: start of previous line
if prevs =~? '^\s*\%(architecture\|configuration\|entity\|package\)\>'
return ind + shiftwidth()
endif
" indent: +sw
" keyword: "select"
" removed: "generate", "is", "=>"
" where: end of previous line
if prevs =~? s:NC.'\<select'.s:ES
return ind + shiftwidth()
endif
" indent: +sw
" keyword: "begin", "loop", "record", "units"
" where: anywhere in previous line
" keyword: "component", "else", "for"
" where: start of previous line
" keyword: "generate", "is", "then", "=>"
" where: end of previous line
" _note_: indent allowed to leave this filter
if prevs =~? s:NC.'\%(\<begin\>\|'.s:NE.'\<\%(loop\|record\|units\)\>\)' || prevs =~? '^\s*\%(component\|else\|for\)\>' || prevs =~? s:NC.'\%('.s:NE.'\<generate\|\<\%(is\|then\)\|=>\)'.s:ES
let ind = ind + shiftwidth()
endif
" ****************************************************************************************
" indent: -sw
" keywords: "when", provided previous line does not begin with "when", does not end with "is"
" where: start of current line
let s4 = '^\s*when\>'
if curs =~? s4
if prevs =~? s:NC.'\<is'.s:ES
return ind
elseif prevs !~? s4
return ind - shiftwidth()
else
return ind2
endif
endif
" indent: -sw
" keywords: "else", "elsif", "end" + "block", "for", "function", "generate", "if", "loop", "procedure", "process", "record", "units"
" where: start of current line
let s5 = 'block\|for\|function\|generate\|if\|loop\|procedure\|process\|record\|units'
if curs =~? '^\s*\%(else\|elsif\|end\s\+\%('.s5.'\)\)\>'
if prevs =~? '^\s*\%(elsif\|'.s5.'\)'
return ind
else
return ind - shiftwidth()
endif
endif
" indent: backtrace previous non-comment lines
" keyword: "end" + "case", "component"
" where: start of current line
let m = 0
if curs =~? '^\s*end\s\+case\>'
let m = 1
elseif curs =~? '^\s*end\s\+component\>'
let m = 2
endif
if m > 0
" find following previous non-comment line
let pn = prevn
let ps = getline(pn)
while pn > 0
if ps !~ '^\s*--'
"indent: -2sw
"keywords: "end" + "case"
"where: start of previous non-comment line
"indent: -sw
"keywords: "when"
"where: start of previous non-comment line
"indent: follow
"keywords: "case"
"where: start of previous non-comment line
if m == 1
if ps =~? '^\s*end\s\+case\>'
return indent(pn) - 2 * shiftwidth()
elseif ps =~? '^\s*when\>'
return indent(pn) - shiftwidth()
elseif ps =~? '^\s*case\>'
return indent(pn)
endif
"indent: follow
"keyword: "component"
"where: start of previous non-comment line
elseif m == 2
if ps =~? '^\s*component\>'
return indent(pn)
endif
endif
endif
let pn = prevnonblank(pn - 1)
let ps = getline(pn)
endwhile
return ind - shiftwidth()
endif
" indent: -sw
" keyword: ")"
" where: start of current line
if curs =~ '^\s*)'
return ind - shiftwidth()
endif
" indent: 0
" keywords: "end" + "architecture", "configuration", "entity", "package"
" where: start of current line
if curs =~? '^\s*end\s\+\%(architecture\|configuration\|entity\|package\)\>'
return 0
endif
" indent: -sw
" keywords: "end" + identifier, ";"
" where: start of current line
"if curs =~? '^\s*end\s\+\w\+\>'
if curs =~? '^\s*end\%(\s\|;'.s:ES.'\)'
return ind - shiftwidth()
endif
" ****************************************************************************************
" indent: maintain indent of previous opening statement
" keywords: without "procedure", "generic", "map", "port" + ":" but not ":=" + "in", "out", "inout", "buffer", "linkage", variable & ":="
" where: start of current line
if curs =~? '^\s*\%(\<\%(procedure\|generic\|map\|port\)\>.*\)\@<!\w\+\s*\w*\s*:[^=]\@=\s*\%(\%(in\|out\|inout\|buffer\|linkage\)\>\|\w\+\s\+:=\)'
return ind2
endif
" ****************************************************************************************
" indent: maintain indent of previous opening statement, corner case which
" does not end in ;, but is part of a mapping
" keywords: without "procedure", "generic", "map", "port" + ":" but not ":=", never + ;$ and
" prevline without "procedure", "generic", "map", "port" + ":" but not ":=" + eventually ;$
" where: start of current line
if curs =~? '^\s*\%(\<\%(procedure\|generic\|map\|port\)\>.*\)\@<!\w\+\s*\w*\s*:[^=].*[^;].*$'
if prevs =~? '^\s*\%(\<\%(procedure\|generic\|map\|port\)\>.*\)\@<!\w\+\s*\w*\s*:[^=].*;.*$'
return ind2
endif
endif
" return leftover filtered indent
return ind
endfunction
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