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" Vim indent file
" Language: Bazel (http://bazel.io)
" Maintainer: David Barnett (https://github.com/google/vim-ft-bzl)
" Last Change: 2021 Jul 08
if exists('b:did_indent')
finish
endif
" Load base python indent.
if !exists('*GetPythonIndent')
runtime! indent/python.vim
endif
let b:did_indent = 1
" Only enable bzl google indent if python google indent is enabled.
if !get(g:, 'no_google_python_indent')
setlocal indentexpr=GetBzlIndent(v:lnum)
endif
if exists('*GetBzlIndent')
finish
endif
let s:save_cpo = &cpo
set cpo-=C
" Maximum number of lines to look backwards.
let s:maxoff = 50
""
" Determine the correct indent level given an {lnum} in the current buffer.
function GetBzlIndent(lnum) abort
let l:use_recursive_indent = !get(g:, 'no_google_python_recursive_indent')
if l:use_recursive_indent
" Backup and override indent setting variables.
if exists('g:pyindent_nested_paren')
let l:pyindent_nested_paren = g:pyindent_nested_paren
endif
if exists('g:pyindent_open_paren')
let l:pyindent_open_paren = g:pyindent_open_paren
endif
let g:pyindent_nested_paren = 'shiftwidth()'
let g:pyindent_open_paren = 'shiftwidth()'
endif
let l:indent = -1
call cursor(a:lnum, 1)
let [l:par_line, l:par_col] = searchpairpos('(\|{\|\[', '', ')\|}\|\]', 'bW',
\ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :" .
\ " synIDattr(synID(line('.'), col('.'), 1), 'name')" .
\ " =~ '\\(Comment\\|String\\)$'")
if l:par_line > 0
" Indent inside parens.
if searchpair('(\|{\|\[', '', ')\|}\|\]', 'W',
\ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :" .
\ " synIDattr(synID(line('.'), col('.'), 1), 'name')" .
\ " =~ '\\(Comment\\|String\\)$'") && line('.') == a:lnum
" If cursor is at close parens, match indent with open parens.
" E.g.
" foo(
" )
let l:indent = indent(l:par_line)
else
" Align with the open paren unless it is at the end of the line.
" E.g.
" open_paren_not_at_EOL(100,
" (200,
" 300),
" 400)
" open_paren_at_EOL(
" 100, 200, 300, 400)
call cursor(l:par_line, 1)
if l:par_col != col('$') - 1
let l:indent = l:par_col
endif
endif
endif
" Delegate the rest to the original function.
if l:indent == -1
let l:indent = GetPythonIndent(a:lnum)
endif
if l:use_recursive_indent
" Restore global variables.
if exists('l:pyindent_nested_paren')
let g:pyindent_nested_paren = l:pyindent_nested_paren
else
unlet g:pyindent_nested_paren
endif
if exists('l:pyindent_open_paren')
let g:pyindent_open_paren = l:pyindent_open_paren
else
unlet g:pyindent_open_paren
endif
endif
return l:indent
endfunction
let &cpo = s:save_cpo
unlet s:save_cpo
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