1 files changed, 343 insertions, 0 deletions

diff --git a/bitbake/contrib/vim/indent/bitbake.vim b/bitbake/contrib/vim/indent/bitbake.vim
new file mode 100644
index 0000000000..1381034098
--- /dev/null
+++ b/bitbake/contrib/vim/indent/bitbake.vim
@@ -0,0 +1,343 @@
+" Vim indent file
+" Language:             BitBake
+" Copyright:            Copyright (C) 2019 Agilent Technologies, Inc.
+" Maintainer:           Chris Laplante <chris.laplante@agilent.com>
+" License:              You may redistribute this under the same terms as Vim itself
+
+
+if exists("b:did_indent")
+    finish
+endif
+
+if exists("*BitbakeIndent")
+    finish
+endif
+
+runtime! indent/sh.vim
+unlet b:did_indent
+
+setlocal indentexpr=BitbakeIndent(v:lnum)
+setlocal autoindent nolisp
+
+function s:is_bb_python_func_def(lnum)
+    let stack = synstack(a:lnum, 1)
+    if len(stack) == 0
+        return 0
+    endif
+
+    let top = synIDattr(stack[0], "name")
+    echo top
+
+    return synIDattr(stack[0], "name") == "bbPyFuncDef"
+endfunction
+
+"""" begin modified from indent/python.vim, upstream commit 7a9bd7c1e0ce1baf5a02daf36eeae3638aa315c7
+"""" This copied code is licensed the same as Vim itself.
+setlocal indentkeys+=<:>,=elif,=except
+
+let s:keepcpo= &cpo
+set cpo&vim
+
+let s:maxoff = 50       " maximum number of lines to look backwards for ()
+
+function GetPythonIndent(lnum)
+
+  " If this line is explicitly joined: If the previous line was also joined,
+  " line it up with that one, otherwise add two 'shiftwidth'
+  if getline(a:lnum - 1) =~ '\\$'
+    if a:lnum > 1 && getline(a:lnum - 2) =~ '\\$'
+      return indent(a:lnum - 1)
+    endif
+    return indent(a:lnum - 1) + (exists("g:pyindent_continue") ? eval(g:pyindent_continue) : (shiftwidth() * 2))
+  endif
+
+  " If the start of the line is in a string don't change the indent.
+  if has('syntax_items')
+        \ && synIDattr(synID(a:lnum, 1, 1), "name") =~ "String$"
+    return -1
+  endif
+
+  " Search backwards for the previous non-empty line.
+  let plnum = prevnonblank(v:lnum - 1)
+
+  if plnum == 0
+    " This is the first non-empty line, use zero indent.
+    return 0
+  endif
+
+  call cursor(plnum, 1)
+
+  " Identing inside parentheses can be very slow, regardless of the searchpair()
+  " timeout, so let the user disable this feature if he doesn't need it
+  let disable_parentheses_indenting = get(g:, "pyindent_disable_parentheses_indenting", 0)
+
+  if disable_parentheses_indenting == 1
+    let plindent = indent(plnum)
+    let plnumstart = plnum
+  else
+    " searchpair() can be slow sometimes, limit the time to 150 msec or what is
+    " put in g:pyindent_searchpair_timeout
+    let searchpair_stopline = 0
+    let searchpair_timeout = get(g:, 'pyindent_searchpair_timeout', 150)
+
+    " If the previous line is inside parenthesis, use the indent of the starting
+    " line.
+    " Trick: use the non-existing "dummy" variable to break out of the loop when
+    " going too far back.
+    let parlnum = searchpair('(\|{\|\[', '', ')\|}\|\]', 'nbW',
+            \ "line('.') < " . (plnum - s:maxoff) . " ? dummy :"
+            \ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
+            \ . " =~ '\\(Comment\\|Todo\\|String\\)$'",
+            \ searchpair_stopline, searchpair_timeout)
+    if parlnum > 0
+      " We may have found the opening brace of a BitBake Python task, e.g. 'python do_task {'
+      " If so, ignore it here - it will be handled later.
+      if s:is_bb_python_func_def(parlnum)
+        let parlnum = 0
+        let plindent = indent(plnum)
+        let plnumstart = plnum
+      else
+        let plindent = indent(parlnum)
+        let plnumstart = parlnum
+      endif
+    else
+      let plindent = indent(plnum)
+      let plnumstart = plnum
+    endif
+
+    " When inside parenthesis: If at the first line below the parenthesis add
+    " two 'shiftwidth', otherwise same as previous line.
+    " i = (a
+    "       + b
+    "       + c)
+    call cursor(a:lnum, 1)
+    let p = searchpair('(\|{\|\[', '', ')\|}\|\]', 'bW',
+            \ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :"
+            \ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
+            \ . " =~ '\\(Comment\\|Todo\\|String\\)$'",
+            \ searchpair_stopline, searchpair_timeout)
+    if p > 0
+        if s:is_bb_python_func_def(p)
+          " Handle first non-empty line inside a BB Python task
+          if p == plnum
+              return shiftwidth()
+          endif
+
+          " Handle the user actually trying to close a BitBake Python task
+          let line = getline(a:lnum)
+          if line =~ '^\s*}'
+              return -2
+          endif
+
+          " Otherwise ignore the brace
+          let p = 0
+        else
+          if p == plnum
+            " When the start is inside parenthesis, only indent one 'shiftwidth'.
+            let pp = searchpair('(\|{\|\[', '', ')\|}\|\]', 'bW',
+                \ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :"
+                \ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
+                \ . " =~ '\\(Comment\\|Todo\\|String\\)$'",
+                \ searchpair_stopline, searchpair_timeout)
+            if pp > 0
+              return indent(plnum) + (exists("g:pyindent_nested_paren") ? eval(g:pyindent_nested_paren) : shiftwidth())
+            endif
+            return indent(plnum) + (exists("g:pyindent_open_paren") ? eval(g:pyindent_open_paren) : (shiftwidth() * 2))
+          endif
+          if plnumstart == p
+            return indent(plnum)
+          endif
+          return plindent
+        endif
+    endif
+
+  endif
+
+
+  " Get the line and remove a trailing comment.
+  " Use syntax highlighting attributes when possible.
+  let pline = getline(plnum)
+  let pline_len = strlen(pline)
+  if has('syntax_items')
+    " If the last character in the line is a comment, do a binary search for
+    " the start of the comment.  synID() is slow, a linear search would take
+    " too long on a long line.
+    if synIDattr(synID(plnum, pline_len, 1), "name") =~ "\\(Comment\\|Todo\\)$"
+      let min = 1
+      let max = pline_len
+      while min < max
+        let col = (min + max) / 2
+        if synIDattr(synID(plnum, col, 1), "name") =~ "\\(Comment\\|Todo\\)$"
+          let max = col
+        else
+          let min = col + 1
+        endif
+      endwhile
+      let pline = strpart(pline, 0, min - 1)
+    endif
+  else
+    let col = 0
+    while col < pline_len
+      if pline[col] == '#'
+        let pline = strpart(pline, 0, col)
+        break
+      endif
+      let col = col + 1
+    endwhile
+  endif
+
+  " If the previous line ended with a colon, indent this line
+  if pline =~ ':\s*$'
+    return plindent + shiftwidth()
+  endif
+
+  " If the previous line was a stop-execution statement...
+  " TODO: utilize this logic to deindent when ending a bbPyDefRegion
+  if getline(plnum) =~ '^\s*\(break\|continue\|raise\|return\|pass\|bb\.fatal\)\>'
+    " See if the user has already dedented
+    if indent(a:lnum) > indent(plnum) - shiftwidth()
+      " If not, recommend one dedent
+      return indent(plnum) - shiftwidth()
+    endif
+    " Otherwise, trust the user
+    return -1
+  endif
+
+  " If the current line begins with a keyword that lines up with "try"
+  if getline(a:lnum) =~ '^\s*\(except\|finally\)\>'
+    let lnum = a:lnum - 1
+    while lnum >= 1
+      if getline(lnum) =~ '^\s*\(try\|except\)\>'
+        let ind = indent(lnum)
+        if ind >= indent(a:lnum)
+          return -1     " indent is already less than this
+        endif
+        return ind      " line up with previous try or except
+      endif
+      let lnum = lnum - 1
+    endwhile
+    return -1           " no matching "try"!
+  endif
+
+  " If the current line begins with a header keyword, dedent
+  if getline(a:lnum) =~ '^\s*\(elif\|else\)\>'
+
+    " Unless the previous line was a one-liner
+    if getline(plnumstart) =~ '^\s*\(for\|if\|try\)\>'
+      return plindent
+    endif
+
+    " Or the user has already dedented
+    if indent(a:lnum) <= plindent - shiftwidth()
+      return -1
+    endif
+
+    return plindent - shiftwidth()
+  endif
+
+  " When after a () construct we probably want to go back to the start line.
+  " a = (b
+  "       + c)
+  " here
+  if parlnum > 0
+    return plindent
+  endif
+
+  return -1
+
+endfunction
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+""" end of stuff from indent/python.vim
+
+
+let b:did_indent = 1
+setlocal indentkeys+=0\"
+
+
+function BitbakeIndent(lnum)
+    if !has('syntax_items')
+        return -1
+    endif
+
+    let stack = synstack(a:lnum, 1)
+    if len(stack) == 0
+        return -1
+    endif
+
+    let name = synIDattr(stack[0], "name")
+
+    " TODO: support different styles of indentation for assignments. For now,
+    " we only support like this:
+    " VAR = " \
+    "     value1 \
+    "     value2 \
+    " "
+    "
+    " i.e. each value indented by shiftwidth(), with the final quote " completely unindented.
+    if name == "bbVarValue"
+        " Quote handling is tricky. kernel.bbclass has this line for instance:
+        "     EXTRA_OEMAKE = " HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" " HOSTCPP="${BUILD_CPP}""
+        " Instead of trying to handle crazy cases like that, just assume that a
+        " double-quote on a line by itself (following an assignment) means the
+        " user is closing the assignment, and de-dent.
+        if getline(a:lnum) =~ '^\s*"$'
+            return 0
+        endif
+
+        let prevstack = synstack(a:lnum - 1, 1)
+        if len(prevstack) == 0
+            return -1
+        endif
+
+        let prevname = synIDattr(prevstack[0], "name")
+
+        " Only indent if there was actually a continuation character on
+        " the previous line, to avoid misleading indentation.
+        let prevlinelastchar = synIDattr(synID(a:lnum - 1, col([a:lnum - 1, "$"]) - 1, 1), "name")
+        let prev_continued = prevlinelastchar == "bbContinue"
+
+        " Did the previous line introduce an assignment?
+        if index(["bbVarDef", "bbVarFlagDef"], prevname) != -1
+            if prev_continued
+                return shiftwidth()
+            endif
+        endif
+
+        if !prev_continued
+            return 0
+        endif
+
+        " Autoindent can take it from here
+        return -1
+    endif
+
+    if index(["bbPyDefRegion", "bbPyFuncRegion"], name) != -1
+        let ret = GetPythonIndent(a:lnum)
+        " Should normally always be indented by at least one shiftwidth; but allow
+        " return of -1 (defer to autoindent) or -2 (force indent to 0)
+        if ret == 0
+            return shiftwidth()
+        elseif ret == -2
+            return 0
+        endif
+        return ret
+    endif
+
+    " TODO: GetShIndent doesn't detect tasks prepended with 'fakeroot'
+    " Need to submit a patch upstream to Vim to provide an extension point.
+    " Unlike the Python indenter, the Sh indenter is way too large to copy and
+    " modify here.
+    if name == "bbShFuncRegion"
+        return GetShIndent()
+    endif
+
+    " TODO:
+    "   + heuristics for de-denting out of a bbPyDefRegion? e.g. when the user
+    "       types an obvious BB keyword like addhandler or addtask, or starts
+    "       writing a shell task. Maybe too hard to implement...
+
+    return -1
+endfunction