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-rw-r--r--runtime/indent/cmake.vim90
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diff --git a/runtime/indent/cmake.vim b/runtime/indent/cmake.vim
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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 Apr 06
+"
+" Licence: 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(
+
+let b:undo_indent = "setl inde< indk<"
+
+" 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_indent_begin_regex = '^\s*\(IF\|MACRO\|FOREACH\|ELSE\|ELSEIF\|WHILE\|FUNCTION\)\s*('
+ let cmake_indent_end_regex = '^\s*\(ENDIF\|ENDFOREACH\|ENDMACRO\|ELSE\|ELSEIF\|ENDWHILE\|ENDFUNCTION\)\s*('
+
+ " 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_indent_close_regex
+ let ind = ind - shiftwidth()
+ endif
+
+ return ind
+endfun
+
+let &cpo = s:keepcpo
+unlet s:keepcpo