runtime(thrift): add ftplugin, indent and syntax scripts
Problem: Apache Thrift files misses ftplugin, indent and syntax scripts
Solution:
- add ftplugin and indent scripts
- add thrift indent test
- port the syntax script from apache/thrift (Apache License 2)
Reference:
https://diwakergupta.github.io/thrift-missing-guide/#_language_reference
closes: #15387
Signed-off-by: Yinzuo Jiang <jiangyinzuo@foxmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/indent/thrift.vim b/runtime/indent/thrift.vim
new file mode 100644
index 0000000..e0860e1
--- /dev/null
+++ b/runtime/indent/thrift.vim
@@ -0,0 +1,74 @@
+" Vim indent file
+" Language: Apache Thrift
+" Maintainer: Yinzuo Jiang <jiangyinzuo@foxmail.com>
+" Last Change: 2024/07/29
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+ finish
+endif
+let b:did_indent = 1
+
+setlocal cindent
+setlocal indentexpr=GetThriftIndent()
+
+let b:undo_indent = "set cindent< indentexpr<"
+
+" Only define the function once.
+if exists("*GetThriftIndent")
+ finish
+endif
+
+let s:keepcpo= &cpo
+set cpo&vim
+
+function! SkipThriftBlanksAndComments(startline)
+ let lnum = a:startline
+ while lnum > 1
+ let lnum = prevnonblank(lnum)
+ if getline(lnum) =~ '\*/\s*$'
+ while getline(lnum) !~ '/\*' && lnum > 1
+ let lnum = lnum - 1
+ endwhile
+ if getline(lnum) =~ '^\s*/\*'
+ let lnum = lnum - 1
+ else
+ break
+ endif
+ elseif getline(lnum) =~ '^\s*\(//\|#\)'
+ let lnum = lnum - 1
+ else
+ break
+ endif
+ endwhile
+ return lnum
+endfunction
+
+function GetThriftIndent()
+ " Thrift is just like C; use the built-in C indenting and then correct a few
+ " specific cases.
+ let theIndent = cindent(v:lnum)
+
+ " If we're in the middle of a comment then just trust cindent
+ if getline(v:lnum) =~ '^\s*\*'
+ return theIndent
+ endif
+
+ let line = substitute(getline(v:lnum), '\(//\|#\).*$', '', '')
+ let previousNum = SkipThriftBlanksAndComments(v:lnum - 1)
+ let previous = substitute(getline(previousNum), '\(//\|#\).*$', '', '')
+
+ let l:indent = indent(previousNum)
+ if previous =~ "{" && previous !~ "}"
+ let l:indent += shiftwidth()
+ endif
+ if line =~ "}" && line !~ "{"
+ let l:indent -= shiftwidth()
+ endif
+ return l:indent
+endfunction
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" vim: sw=2 sts=2 et