Add crystal syntax, closes #118

1 files changed, 389 insertions, 0 deletions

diff --git a/autoload/vital/_crystal/Prelude.vim b/autoload/vital/_crystal/Prelude.vim
new file mode 100644
index 00000000..be31f980
--- /dev/null
+++ b/autoload/vital/_crystal/Prelude.vim
@@ -0,0 +1,389 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'crystal') == -1
+  
+let s:save_cpo = &cpo
+set cpo&vim
+
+if v:version ># 703 ||
+\  (v:version is 703 && has('patch465'))
+  function! s:glob(expr) abort
+    return glob(a:expr, 1, 1)
+  endfunction
+else
+  function! s:glob(expr) abort
+    let R = glob(a:expr, 1)
+    return split(R, '\n')
+  endfunction
+endif
+
+function! s:globpath(path, expr) abort
+  let R = globpath(a:path, a:expr, 1)
+  return split(R, '\n')
+endfunction
+
+" Wrapper functions for type().
+let [
+\   s:__TYPE_NUMBER,
+\   s:__TYPE_STRING,
+\   s:__TYPE_FUNCREF,
+\   s:__TYPE_LIST,
+\   s:__TYPE_DICT,
+\   s:__TYPE_FLOAT] = [
+      \   type(3),
+      \   type(""),
+      \   type(function('tr')),
+      \   type([]),
+      \   type({}),
+      \   has('float') ? type(str2float('0')) : -1]
+" __TYPE_FLOAT = -1 when -float
+" This doesn't match to anything.
+
+" Number or Float
+function! s:is_numeric(Value) abort
+  let _ = type(a:Value)
+  return _ ==# s:__TYPE_NUMBER
+  \   || _ ==# s:__TYPE_FLOAT
+endfunction
+
+" Number
+function! s:is_number(Value) abort
+  return type(a:Value) ==# s:__TYPE_NUMBER
+endfunction
+
+" Float
+function! s:is_float(Value) abort
+  return type(a:Value) ==# s:__TYPE_FLOAT
+endfunction
+" String
+function! s:is_string(Value) abort
+  return type(a:Value) ==# s:__TYPE_STRING
+endfunction
+" Funcref
+function! s:is_funcref(Value) abort
+  return type(a:Value) ==# s:__TYPE_FUNCREF
+endfunction
+" List
+function! s:is_list(Value) abort
+  return type(a:Value) ==# s:__TYPE_LIST
+endfunction
+" Dictionary
+function! s:is_dict(Value) abort
+  return type(a:Value) ==# s:__TYPE_DICT
+endfunction
+
+function! s:truncate_skipping(str, max, footer_width, separator) abort
+  call s:_warn_deprecated("truncate_skipping", "Data.String.truncate_skipping")
+
+  let width = s:wcswidth(a:str)
+  if width <= a:max
+    let ret = a:str
+  else
+    let header_width = a:max - s:wcswidth(a:separator) - a:footer_width
+    let ret = s:strwidthpart(a:str, header_width) . a:separator
+          \ . s:strwidthpart_reverse(a:str, a:footer_width)
+  endif
+
+  return s:truncate(ret, a:max)
+endfunction
+
+function! s:truncate(str, width) abort
+  " Original function is from mattn.
+  " http://github.com/mattn/googlereader-vim/tree/master
+
+  call s:_warn_deprecated("truncate", "Data.String.truncate")
+
+  if a:str =~# '^[\x00-\x7f]*$'
+    return len(a:str) < a:width ?
+          \ printf('%-'.a:width.'s', a:str) : strpart(a:str, 0, a:width)
+  endif
+
+  let ret = a:str
+  let width = s:wcswidth(a:str)
+  if width > a:width
+    let ret = s:strwidthpart(ret, a:width)
+    let width = s:wcswidth(ret)
+  endif
+
+  if width < a:width
+    let ret .= repeat(' ', a:width - width)
+  endif
+
+  return ret
+endfunction
+
+function! s:strwidthpart(str, width) abort
+  call s:_warn_deprecated("strwidthpart", "Data.String.strwidthpart")
+
+  if a:width <= 0
+    return ''
+  endif
+  let ret = a:str
+  let width = s:wcswidth(a:str)
+  while width > a:width
+    let char = matchstr(ret, '.$')
+    let ret = ret[: -1 - len(char)]
+    let width -= s:wcswidth(char)
+  endwhile
+
+  return ret
+endfunction
+function! s:strwidthpart_reverse(str, width) abort
+  call s:_warn_deprecated("strwidthpart_reverse", "Data.String.strwidthpart_reverse")
+
+  if a:width <= 0
+    return ''
+  endif
+  let ret = a:str
+  let width = s:wcswidth(a:str)
+  while width > a:width
+    let char = matchstr(ret, '^.')
+    let ret = ret[len(char) :]
+    let width -= s:wcswidth(char)
+  endwhile
+
+  return ret
+endfunction
+
+if v:version >= 703
+  " Use builtin function.
+  function! s:wcswidth(str) abort
+    call s:_warn_deprecated("wcswidth", "Data.String.wcswidth")
+    return strwidth(a:str)
+  endfunction
+else
+  function! s:wcswidth(str) abort
+    call s:_warn_deprecated("wcswidth", "Data.String.wcswidth")
+
+    if a:str =~# '^[\x00-\x7f]*$'
+      return strlen(a:str)
+    end
+
+    let mx_first = '^\(.\)'
+    let str = a:str
+    let width = 0
+    while 1
+      let ucs = char2nr(substitute(str, mx_first, '\1', ''))
+      if ucs == 0
+        break
+      endif
+      let width += s:_wcwidth(ucs)
+      let str = substitute(str, mx_first, '', '')
+    endwhile
+    return width
+  endfunction
+
+  " UTF-8 only.
+  function! s:_wcwidth(ucs) abort
+    let ucs = a:ucs
+    if (ucs >= 0x1100
+          \  && (ucs <= 0x115f
+          \  || ucs == 0x2329
+          \  || ucs == 0x232a
+          \  || (ucs >= 0x2e80 && ucs <= 0xa4cf
+          \      && ucs != 0x303f)
+          \  || (ucs >= 0xac00 && ucs <= 0xd7a3)
+          \  || (ucs >= 0xf900 && ucs <= 0xfaff)
+          \  || (ucs >= 0xfe30 && ucs <= 0xfe6f)
+          \  || (ucs >= 0xff00 && ucs <= 0xff60)
+          \  || (ucs >= 0xffe0 && ucs <= 0xffe6)
+          \  || (ucs >= 0x20000 && ucs <= 0x2fffd)
+          \  || (ucs >= 0x30000 && ucs <= 0x3fffd)
+          \  ))
+      return 2
+    endif
+    return 1
+  endfunction
+endif
+
+let s:is_windows = has('win16') || has('win32') || has('win64') || has('win95')
+let s:is_cygwin = has('win32unix')
+let s:is_mac = !s:is_windows && !s:is_cygwin
+      \ && (has('mac') || has('macunix') || has('gui_macvim') ||
+      \   (!isdirectory('/proc') && executable('sw_vers')))
+let s:is_unix = has('unix')
+
+function! s:is_windows() abort
+  return s:is_windows
+endfunction
+
+function! s:is_cygwin() abort
+  return s:is_cygwin
+endfunction
+
+function! s:is_mac() abort
+  return s:is_mac
+endfunction
+
+function! s:is_unix() abort
+  return s:is_unix
+endfunction
+
+function! s:_warn_deprecated(name, alternative) abort
+  try
+    echohl Error
+    echomsg "Prelude." . a:name . " is deprecated!  Please use " . a:alternative . " instead."
+  finally
+    echohl None
+  endtry
+endfunction
+
+function! s:smart_execute_command(action, word) abort
+  execute a:action . ' ' . (a:word == '' ? '' : '`=a:word`')
+endfunction
+
+function! s:escape_file_searching(buffer_name) abort
+  return escape(a:buffer_name, '*[]?{}, ')
+endfunction
+
+function! s:escape_pattern(str) abort
+  return escape(a:str, '~"\.^$[]*')
+endfunction
+
+function! s:getchar(...) abort
+  let c = call('getchar', a:000)
+  return type(c) == type(0) ? nr2char(c) : c
+endfunction
+
+function! s:getchar_safe(...) abort
+  let c = s:input_helper('getchar', a:000)
+  return type(c) == type("") ? c : nr2char(c)
+endfunction
+
+function! s:input_safe(...) abort
+  return s:input_helper('input', a:000)
+endfunction
+
+function! s:input_helper(funcname, args) abort
+  let success = 0
+  if inputsave() !=# success
+    throw 'vital: Prelude: inputsave() failed'
+  endif
+  try
+    return call(a:funcname, a:args)
+  finally
+    if inputrestore() !=# success
+      throw 'vital: Prelude: inputrestore() failed'
+    endif
+  endtry
+endfunction
+
+function! s:set_default(var, val) abort
+  if !exists(a:var) || type({a:var}) != type(a:val)
+    let {a:var} = a:val
+  endif
+endfunction
+
+function! s:substitute_path_separator(path) abort
+  return s:is_windows ? substitute(a:path, '\\', '/', 'g') : a:path
+endfunction
+
+function! s:path2directory(path) abort
+  return s:substitute_path_separator(isdirectory(a:path) ? a:path : fnamemodify(a:path, ':p:h'))
+endfunction
+
+function! s:_path2project_directory_git(path) abort
+  let parent = a:path
+
+  while 1
+    let path = parent . '/.git'
+    if isdirectory(path) || filereadable(path)
+      return parent
+    endif
+    let next = fnamemodify(parent, ':h')
+    if next == parent
+      return ''
+    endif
+    let parent = next
+  endwhile
+endfunction
+
+function! s:_path2project_directory_svn(path) abort
+  let search_directory = a:path
+  let directory = ''
+
+  let find_directory = s:escape_file_searching(search_directory)
+  let d = finddir('.svn', find_directory . ';')
+  if d == ''
+    return ''
+  endif
+
+  let directory = fnamemodify(d, ':p:h:h')
+
+  " Search parent directories.
+  let parent_directory = s:path2directory(
+        \ fnamemodify(directory, ':h'))
+
+  if parent_directory != ''
+    let d = finddir('.svn', parent_directory . ';')
+    if d != ''
+      let directory = s:_path2project_directory_svn(parent_directory)
+    endif
+  endif
+  return directory
+endfunction
+
+function! s:_path2project_directory_others(vcs, path) abort
+  let vcs = a:vcs
+  let search_directory = a:path
+
+  let find_directory = s:escape_file_searching(search_directory)
+  let d = finddir(vcs, find_directory . ';')
+  if d == ''
+    return ''
+  endif
+  return fnamemodify(d, ':p:h:h')
+endfunction
+
+function! s:path2project_directory(path, ...) abort
+  let is_allow_empty = get(a:000, 0, 0)
+  let search_directory = s:path2directory(a:path)
+  let directory = ''
+
+  " Search VCS directory.
+  for vcs in ['.git', '.bzr', '.hg', '.svn']
+    if vcs ==# '.git'
+      let directory = s:_path2project_directory_git(search_directory)
+    elseif vcs ==# '.svn'
+      let directory = s:_path2project_directory_svn(search_directory)
+    else
+      let directory = s:_path2project_directory_others(vcs, search_directory)
+    endif
+    if directory != ''
+      break
+    endif
+  endfor
+
+  " Search project file.
+  if directory == ''
+    for d in ['build.xml', 'prj.el', '.project', 'pom.xml', 'package.json',
+          \ 'Makefile', 'configure', 'Rakefile', 'NAnt.build',
+          \ 'P4CONFIG', 'tags', 'gtags']
+      let d = findfile(d, s:escape_file_searching(search_directory) . ';')
+      if d != ''
+        let directory = fnamemodify(d, ':p:h')
+        break
+      endif
+    endfor
+  endif
+
+  if directory == ''
+    " Search /src/ directory.
+    let base = s:substitute_path_separator(search_directory)
+    if base =~# '/src/'
+      let directory = base[: strridx(base, '/src/') + 3]
+    endif
+  endif
+
+  if directory == '' && !is_allow_empty
+    " Use original path.
+    let directory = search_directory
+  endif
+
+  return s:substitute_path_separator(directory)
+endfunction
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim:set et ts=2 sts=2 sw=2 tw=0:
+
+endif