mirror of
https://github.com/neovim/neovim.git
synced 2024-12-25 21:55:17 -07:00
68 lines
1.8 KiB
VimL
68 lines
1.8 KiB
VimL
" vim: set sw=4 sts=4:
|
|
" Maintainer : Gergely Kontra <kgergely@mcl.hu>
|
|
" Revised on : 2002.02.18. 23:34:05
|
|
" Language : Prolog
|
|
" Last change by: Takuya Fujiwara, 2018 Sep 23
|
|
|
|
" TODO:
|
|
" checking with respect to syntax highlighting
|
|
" ignoring multiline comments
|
|
" detecting multiline strings
|
|
|
|
" Only load this indent file when no other was loaded.
|
|
if exists("b:did_indent")
|
|
finish
|
|
endif
|
|
|
|
let b:did_indent = 1
|
|
|
|
setlocal indentexpr=GetPrologIndent()
|
|
setlocal indentkeys-=:,0#
|
|
setlocal indentkeys+=0%,-,0;,>,0)
|
|
|
|
" Only define the function once.
|
|
"if exists("*GetPrologIndent")
|
|
" finish
|
|
"endif
|
|
|
|
function! GetPrologIndent()
|
|
" Find a non-blank line above the current line.
|
|
let pnum = prevnonblank(v:lnum - 1)
|
|
" Hit the start of the file, use zero indent.
|
|
if pnum == 0
|
|
return 0
|
|
endif
|
|
let line = getline(v:lnum)
|
|
let pline = getline(pnum)
|
|
|
|
let ind = indent(pnum)
|
|
" Previous line was comment -> use previous line's indent
|
|
if pline =~ '^\s*%'
|
|
return ind
|
|
endif
|
|
" Previous line was the start of block comment -> +1 after '/*' comment
|
|
if pline =~ '^\s*/\*'
|
|
return ind + 1
|
|
endif
|
|
" Previous line was the end of block comment -> -1 after '*/' comment
|
|
if pline =~ '^\s*\*/'
|
|
return ind - 1
|
|
endif
|
|
" Check for clause head on previous line
|
|
if pline =~ '\%(:-\|-->\)\s*\(%.*\)\?$'
|
|
let ind = ind + shiftwidth()
|
|
" Check for end of clause on previous line
|
|
elseif pline =~ '\.\s*\(%.*\)\?$'
|
|
let ind = ind - shiftwidth()
|
|
endif
|
|
" Check for opening conditional on previous line
|
|
if pline =~ '^\s*\([(;]\|->\)'
|
|
let ind = ind + shiftwidth()
|
|
endif
|
|
" Check for closing an unclosed paren, or middle ; or ->
|
|
if line =~ '^\s*\([);]\|->\)'
|
|
let ind = ind - shiftwidth()
|
|
endif
|
|
return ind
|
|
endfunction
|