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" Vim indent file
" Language: CMake (ft=cmake)
" Author: Andy Cedilnik <andy.cedilnik@kitware.com>
" Maintainer: Dimitri Merejkowsky <d.merej@gmail.com>
" Former Maintainer: Karthik Krishnan <karthik.krishnan@kitware.com>
" Last Change: 2022 Mar 22
"
" License: The CMake license applies to this file. See
" https://cmake.org/licensing
" This implies that distribution with Vim is allowed
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal indentexpr=CMakeGetIndent(v:lnum)
setlocal indentkeys+==ENDIF(,ENDFOREACH(,ENDMACRO(,ELSE(,ELSEIF(,ENDWHILE(
" Only define the function once.
if exists("*CMakeGetIndent")
finish
endif
let s:keepcpo= &cpo
set cpo&vim
fun! CMakeGetIndent(lnum)
let this_line = getline(a:lnum)
" Find a non-blank line above the current line.
let lnum = a:lnum
let lnum = prevnonblank(lnum - 1)
let previous_line = getline(lnum)
" Hit the start of the file, use zero indent.
if lnum == 0
return 0
endif
let ind = indent(lnum)
let or = '\|'
" Regular expressions used by line indentation function.
let cmake_regex_comment = '#.*'
let cmake_regex_identifier = '[A-Za-z][A-Za-z0-9_]*'
let cmake_regex_quoted = '"\([^"\\]\|\\.\)*"'
let cmake_regex_arguments = '\(' . cmake_regex_quoted .
\ or . '\$(' . cmake_regex_identifier . ')' .
\ or . '[^()\\#"]' . or . '\\.' . '\)*'
let cmake_indent_comment_line = '^\s*' . cmake_regex_comment
let cmake_indent_blank_regex = '^\s*$'
let cmake_indent_open_regex = '^\s*' . cmake_regex_identifier .
\ '\s*(' . cmake_regex_arguments .
\ '\(' . cmake_regex_comment . '\)\?$'
let cmake_indent_close_regex = '^' . cmake_regex_arguments .
\ ')\s*' .
\ '\(' . cmake_regex_comment . '\)\?$'
let cmake_closing_parens_line = '^\s*\()\+\)\s*$'
let cmake_indent_begin_regex = '^\s*\(BLOCK\|IF\|MACRO\|FOREACH\|ELSE\|ELSEIF\|WHILE\|FUNCTION\)\s*('
let cmake_indent_end_regex = '^\s*\(ENDBLOCK\|ENDIF\|ENDFOREACH\|ENDMACRO\|ELSE\|ELSEIF\|ENDWHILE\|ENDFUNCTION\)\s*('
if this_line =~? cmake_closing_parens_line
if previous_line !~? cmake_indent_open_regex
let ind = ind - shiftwidth()
endif
else
" Add
if previous_line =~? cmake_indent_comment_line " Handle comments
let ind = ind
else
if previous_line =~? cmake_indent_begin_regex
let ind = ind + shiftwidth()
endif
if previous_line =~? cmake_indent_open_regex
let ind = ind + shiftwidth()
endif
endif
" Subtract
if this_line =~? cmake_indent_end_regex
let ind = ind - shiftwidth()
endif
if previous_line !~? cmake_closing_parens_line
if previous_line =~? cmake_indent_close_regex
let ind = ind - shiftwidth()
endif
endif
endif
return ind
endfun
let &cpo = s:keepcpo
unlet s:keepcpo
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