147 lines
4.0 KiB
VimL
147 lines
4.0 KiB
VimL
if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'nim') == -1
|
|
|
|
" 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=GetNimIndent(v:lnum)
|
|
setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif
|
|
|
|
" Only define the function once.
|
|
if exists("*GetNimIndent")
|
|
finish
|
|
endif
|
|
|
|
function! s:FindStartLine(fromln, pattern)
|
|
let lnum = a:fromln
|
|
let safechoice = indent(lnum)
|
|
while getline(lnum) !~ a:pattern
|
|
if indent(lnum) == 0 || lnum == 1
|
|
return safechoice
|
|
endif
|
|
let lnum = lnum - 1
|
|
endwhile
|
|
return indent(lnum)
|
|
endfunction
|
|
|
|
function! GetNimIndent(lnum)
|
|
" Search backwards for the previous non-empty line.
|
|
let plnum = prevnonblank(a:lnum - 1)
|
|
|
|
if plnum == 0
|
|
" This is the first non-empty line, use zero indent.
|
|
return 0
|
|
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$"
|
|
return -1
|
|
endif
|
|
|
|
let pline = getline(plnum)
|
|
let cline = getline(a:lnum)
|
|
let pline_len = strlen(pline)
|
|
let plindent = indent(plnum)
|
|
let clindent = indent(a:lnum)
|
|
|
|
" Remove any trailing comment from previous line.
|
|
" Use syntax highlighting attributes when possible.
|
|
if has('syntax_items')
|
|
" If the last character in the line is a comment, do a binary search for
|
|
" the start of the comment. synID() is slow, a linear search would take
|
|
" too long on a long line.
|
|
if synIDattr(synID(plnum, pline_len, 1), "name") =~ "Comment$"
|
|
let min = 1
|
|
let max = pline_len
|
|
while min < max
|
|
let col = (min + max) / 2
|
|
if synIDattr(synID(plnum, col, 1), "name") =~ "Comment$"
|
|
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 cline =~ '^\s*\(if\|when\|for\|while\|case\|of\|try\)\>'
|
|
" This is a benign line, do nothing
|
|
return -1
|
|
endif
|
|
|
|
" If the current line begins with a keyword that lines up with "try"
|
|
if cline =~ '^\s*\(except\|finally\)\>'
|
|
let lnum = a:lnum - 1
|
|
while lnum >= 1
|
|
if getline(lnum) =~ '^\s*\(try\|except\)\>'
|
|
let ind = indent(lnum)
|
|
if ind >= clindent
|
|
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 cline =~ '^\s*\(elif\|else\)\>'
|
|
return s:FindStartLine(a:lnum, '^\s*\(if\|when\|elif\|of\)')
|
|
endif
|
|
|
|
if pline =~ ':\s*$'
|
|
"return s:FindStartLine(plnum, '(^\s*\(if\|when\|else\|elif\|case\|of\|try\|except\|finally\)\>)\|\<do\>') + &sw
|
|
return s:FindStartLine(plnum, '^\s*\(if\|when\|else\|elif\|for\|while\|case\|of\|try\|except\|finally\)\>') + &sw
|
|
endif
|
|
|
|
if pline =~ '=\s*$'
|
|
return s:FindStartLine(plnum, '^\s*\(proc\|template\|macro\|iterator\)\>') + &sw
|
|
endif
|
|
|
|
" if we got here, this should be the begging of a multi-line if expression for example
|
|
if pline =~ '^\s*\(if\|when\|proc\|iterator\|macro\|template\|for\|while\)[^:]*$'
|
|
return plindent + &sw
|
|
endif
|
|
|
|
if pline =~ '\(type\|import\|const\|var\)\s*$'
|
|
\ || pline =~ '=\s*\(object\|enum\|tuple\|concept\)'
|
|
return plindent + &sw
|
|
endif
|
|
|
|
" If the previous line was a stop-execution statement...
|
|
if pline =~ '^\s*\(break\|continue\|raise\|return\)\>'
|
|
" See if the user has already dedented
|
|
if indent(a:lnum) > plindent - &sw
|
|
" If not, recommend one dedent
|
|
return plindent - &sw
|
|
endif
|
|
" Otherwise, trust the user
|
|
return -1
|
|
endif
|
|
|
|
return -1
|
|
|
|
endfunction
|
|
|
|
" vim:sw=2
|
|
|
|
|
|
endif
|