| Current File : //proc/thread-self/root/usr/share/vim/vim91/indent/meson.vim |
" Vim indent file
" Language: Meson
" License: VIM License
" Maintainer: Nirbheek Chauhan <nirbheek.chauhan@gmail.com>
" Liam Beguin <liambeguin@gmail.com>
" Original Authors: David Bustos <bustos@caltech.edu>
" Bram Moolenaar <Bram@vim.org>
" Last Change: 2019 Oct 18
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
" Some preliminary settings
setlocal nolisp " Make sure lisp indenting doesn't supersede us
setlocal autoindent " indentexpr isn't much help otherwise
setlocal indentexpr=GetMesonIndent(v:lnum)
setlocal indentkeys+==elif,=else,=endforeach,=endif,0)
let b:undo_indent = "setl ai< inde< indk< lisp<"
" Only define the function once.
if exists("*GetMesonIndent")
finish
endif
let s:keepcpo= &cpo
set cpo&vim
" Come here when loading the script the first time.
let s:maxoff = 50 " maximum number of lines to look backwards for ()
function GetMesonIndent(lnum)
echom getline(line("."))
" 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:mesonindent_continue") ? eval(g:mesonindent_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
" 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.
call cursor(plnum, 1)
let parlnum = searchpair('(\|{\|\[', '', ')\|}\|\]', 'nbW',
\ "line('.') < " . (plnum - s:maxoff) . " ? dummy :"
\ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
\ . " =~ '\\(Comment\\|Todo\\|String\\)$'")
if parlnum > 0
let plindent = indent(parlnum)
let plnumstart = parlnum
else
let plindent = indent(plnum)
let plnumstart = plnum
endif
" When inside parenthesis: If at the first line below the parenthesis add
" a '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\\)$'")
if p > 0
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\\)$'")
if pp > 0
return indent(plnum) + (exists("g:pyindent_nested_paren") ? eval(g:pyindent_nested_paren) : shiftwidth())
endif
return indent(plnum) + (exists("g:pyindent_open_paren") ? eval(g:pyindent_open_paren) : shiftwidth())
endif
if plnumstart == p
return indent(plnum)
endif
return plindent
endif
" Get the line and remove a trailing comment.
" Use syntax highlighting attributes when possible.
let pline = getline(plnum)
let pline_len = strlen(pline)
if has('syntax_items')
" If the last character in the line is a comment, do a binary search for
" the start of the comment. synID() is slow, a linear search would take
" too long on a long line.
if synIDattr(synID(plnum, pline_len, 1), "name") =~ "\\(Comment\\|Todo\\)$"
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 the conditional/loop
if getline(plnum) =~ '^\s*\(endif\|endforeach\)\>\s*'
" Maintain indent
return -1
endif
" If the previous line ended with a builtin, indent this line
if pline =~ '^\s*\(foreach\|if\|else\|elif\)\>\s*'
return plindent + shiftwidth()
endif
" If the current line begins with a header keyword, deindent
if getline(a:lnum) =~ '^\s*\(else\|elif\|endif\|endforeach\)'
" Unless the previous line was a one-liner
if getline(plnumstart) =~ '^\s*\(foreach\|if\)\>\s*'
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
" vim:sw=2