Add syntax files from upstream vim repository

1 files changed, 438 insertions, 0 deletions

diff --git a/indent/vhdl.vim b/indent/vhdl.vim
new file mode 100644
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--- /dev/null
+++ b/indent/vhdl.vim
@@ -0,0 +1,438 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" VHDL indent ('93 syntax)
+" Language:    VHDL
+" Maintainer:  Gerald Lai <laigera+vim?gmail.com>
+" Version:     1.60
+" Last Change: 2017 Jun 13
+" 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 ":=" + eventually ;$
+  " where:    start of current line
+  if curs =~? '^\s*\%(\<\%(procedure\|generic\|map\|port\)\>.*\)\@<!\w\+\s*\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
+
+endif