first draft of vim binding for estr

vimfiles/ftplugin/javascript-estr.vim

@@ -0,0 +1,71 @@
+"
+" first draft of vim binding for estr
+"
+" https://github.com/clausreinke/estr
+"
+" you'll need to enable filetype plugins, and, 
+" in your .vimrc, let g:estr = <path to estr.js>
+"
+
+if !executable("node")
+  echoerr "cannot find node"
+  finish
+endif
+
+let s:estr = exists("g:estr") ? g:estr : "../../estr.js"
+if !filereadable(estr)
+  echoerr "cannot find estr.js; please let g:estr = <path to estr.js>"
+  finish
+endif
+
+" for variable under cursor, populate location list
+" with binding occurrence and other occurences
+" 
+" - navigate to binding occurrence: :lr
+" - navigate to next occurrence: :lne
+" - navigate to previous occurrence: :lp
+command! FindVar call FindVar()
+function! FindVar()
+  let file    = expand("%")
+  let oldName = expand("<cword>")
+  let line    = line(".")
+  let col     = col(".")
+  let command = "findVar ".file." ".oldName." ".line." ".col
+  echo command
+  let output  = system("node ".s:estr." ".command)
+  let occurrences = substitute(output,".*binding occurrence","binding occurrence","")
+  let s:efm = &efm
+  set efm=%-Ibinding\ occurrence:\ ,%-Iother\ occurrences:\ ,%f\ %.%#\ {\ line:\ %l\\,\ column:\ %c\ %.%#
+  lexpr occurrences
+  let &efm = s:efm
+endfunction
+
+" rename variable under cursor, prompting for new name
+" updates file inplace, saves original in file.bak;
+" diff renamed version against original
+command! Rename call Rename(1)
+function! Rename(diff)
+  let file    = expand("%")
+  let oldName = expand("<cword>")
+  let line    = line(".")
+  let col     = col(".")
+  let newName = input("new name? ")
+  let command = "rename -i.bak ".file." ".oldName." ".line." ".col." ".newName
+  echo command
+  let s:autoread = &autoread
+  setlocal autoread
+  let output  = system("node ".s:estr." ".command)
+  if v:shell_error
+    for l in split(output,'\n')
+      echoerr l
+    endfor
+  else
+    if a:diff
+      vert diffsplit %.bak
+    endif
+    for l in split(output,'\n')
+      echomsg l
+    endfor
+  endif
+  let &autoread = s:autoread
+endfunction