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-rw-r--r--runtime/indent/kotlin.vim60
1 files changed, 60 insertions, 0 deletions
diff --git a/runtime/indent/kotlin.vim b/runtime/indent/kotlin.vim
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+++ b/runtime/indent/kotlin.vim
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+" Vim indent file
+" Language: Kotlin
+" Maintainer: Alexander Udalov
+" URL: https://github.com/udalov/kotlin-vim
+" Last Change: 7 November 2021
+" 2023 Sep 17 by Vim Project (undo_indent)
+
+if exists('b:did_indent')
+ finish
+endif
+let b:did_indent = 1
+
+setlocal cinoptions& cinoptions+=j1,L0
+setlocal indentexpr=GetKotlinIndent()
+setlocal indentkeys=0},0),!^F,o,O,e,<CR>
+setlocal autoindent " TODO ?
+
+let b:undo_indent = "setlocal autoindent< cinoptions< indentexpr< indentkeys<"
+
+" TODO teach it to count bracket balance, etc.
+function! GetKotlinIndent()
+ if v:lnum == 0
+ return 0
+ endif
+
+ let prev_num = prevnonblank(v:lnum - 1)
+ let prev = getline(prev_num)
+ let prev_indent = indent(prev_num)
+ let cur = getline(v:lnum)
+
+ if cur =~ '^\s*\*'
+ return cindent(v:lnum)
+ endif
+
+ if prev =~ '^\s*\*/'
+ let st = prev
+ while st > 1
+ if getline(st) =~ '^\s*/\*'
+ break
+ endif
+ let st = st - 1
+ endwhile
+ return indent(st)
+ endif
+
+ let prev_open_paren = prev =~ '^.*(\s*$'
+ let cur_close_paren = cur =~ '^\s*).*$'
+ let prev_open_brace = prev =~ '^.*\({\|->\)\s*$'
+ let cur_close_brace = cur =~ '^\s*}.*$'
+
+ if prev_open_paren && !cur_close_paren || prev_open_brace && !cur_close_brace
+ return prev_indent + shiftwidth()
+ endif
+
+ if cur_close_paren && !prev_open_paren || cur_close_brace && !prev_open_brace
+ return prev_indent - shiftwidth()
+ endif
+
+ return prev_indent
+endfunction