| author |
Steve Losh <steve@stevelosh.com> |
| date |
Fri, 29 Oct 2010 17:38:50 -0400 |
| parents |
(none) |
| children |
(none) |
*vimclojure.txt* *clojure.vim*
VimClojure - A Clojure Environment
==================================
Introduction
------------
VimClojure is a filetype plugin and development environment for Clojure. It
provides indenting, syntax highlighting and – if configured – interactive
features like omni completion, documentation lookup and a Repl running in a
Vim buffer.
Nailgun Server *clj-nailgun-server*
--------------
To use the interactive part you have to start the nailgun server via the jar
file. Make sure, that clojure and clojure-contrib are in your classpath and
start the vimclojure.nailgun.NGServer class. Example invocation:
>
java -cp clojure.jar:clojure-contrib.jar:vimclojure.jar vimclojure.nailgun.NGServer 127.0.0.1
<
This may look different depending on your system.
You can stop the server by invoking the nailgun client with the ng-stop
argument.
>
ng ng-stop
<
Set the vimclojure#WantNailgun variable in your vimrc.
>
let vimclojure#WantNailgun = 1
<
Note: Should there be an error when executing an interactive command
and the error message goes away to quickly, you can use |:messages| to
recall the message and read it conveniently without time pressure.
VimClojure might pop up windows, like the preview window or the Repl.
The place where this is done may be controlled with the SplitPos variable.
Possible values are "left", "right", "top" and "bottom". The default is
"top".
Example:
>
let vimclojure#SplitPos = "left"
<
It is also possible to specify the size of the new window. The size is
specified in lines/columns.
>
let vimclojure#SplitSize = 10
<
Errors
------
Errors are reported in a temporary buffer. This is to make error messages
more readable. In particular when they contain stacktraces from the Java
side. However this may interfer with scripts which do not expect that a
new buffer pops up. So one can go back to the old behaviour.
>
let vimclojure#UseErrorBuffer = 0
<
Note: the error might not be shown by vim. Check the output of |:message|
for errors.
Syntax Highlighting *ft-clj-syntax*
-------------------
The clojure syntax highlighting provides several options:
>
g:vimclojure#HighlightBuiltins
If it is nonzero, then Clojure's builtin functions are
highlighted. This useful to distuingish macros and special
forms from functions. Enabled by default.
g:vimclojure#ParenRainbow
Controls the colorisation of the differing levels of
parenthesisation. If non-zero, different levels will be
colored differently. Disabled by default.
g:vimclojure#DynamicHighlighting
Uses the dynamic features of VimClojure to dynamically add
the symbols of required and used namespaces. The file needs
to be correct (ie. w/o syntax errors and on the classpath)
for this to work. If this is not the case, dynamic
highlighting is not done. Disabled by default.
<
The g:vimclojure#ParenRainbow option provides 10 levels of individual
colorisation for the parentheses. Because of the quantity of colorisation
levels, unlike non-rainbow highlighting, the rainbow mode specifies its
highlighting using ctermfg and guifg, thereby bypassing the usual colorscheme
control using standard highlighting groups. The actual highlighting used
depends on the dark/bright setting (see |'bg'|).
Preview Window
--------------
Many of the below mentioned commands open the so called preview window.
It displays information obtained from the lookup functions and the omni
completion. You may close the preview window with <LocalLeader>p.
Note: The preview window sometimes doesn't not adhere to the SplitPos
variable. This is the case, eg. for omni completion. It happens when
the preview window is created by Vim and not by VimClojure itself. At
the moment, I don't know how to fix this.
Keybindings
-----------
Note: <LocalLeader> is a Vim feature. More information can be found
under the |maplocalleader| help topic.
You can redefine any key mapping using some autocommand in your .vimrc file.
All mappings use so-called Plugs. Simply prepend <Plug>Clojure to the given
Plug name and your setting will override the default mapping.
>
aucmd BufRead,BufNewFile *.clj nmap xyz <Plug>ClojureEvalToplevel
<
<LocalLeader>et *et* *EvalToplevel*
Send off the toplevel sexpression currently
containing the cursor to the Clojure server.
<LocalLeader>ef *ef* *EvalFile*
Send off the current file to the Clojure Server.
<LocalLeader>eb *eb* *EvalBlock*
Send off the the mark visual block to the
Clojure server. Obviously this mapping is only
active in visual mode.
Note: This does not check for structure.
<LocalLeader>el *el* *EvalLine*
Send off the current line to the Clojure Server.
Note: This does not check for structure.
<LocalLeader>ep *ep* *EvalParagraph*
Send off the current paragraph to the Clojure Server.
Note: This does not check for structure.
<LocalLeader>rf *rf* *RequireFile*
Require the namespace of the current file with
the :reload flag. Note: For this to work with
a remote Clojure server, the files have to put in
place before issueing the command, eg. via scp
or NFS.
<LocalLeader>rF *rF* *RequireFileAll*
Require the namespace of the current file with
the :reload-all flag. Note: For this to work with
a remote Clojure server, the files have to put in
place before issueing the command, eg. via scp
or NFS.
<LocalLeader>rt *rt* *RunTests*
Require the namespace of the filename with the
:reload flag. Then use clojure.contrib.test-is
to run the tests of the namespace via run-tests.
Note: For this to work with a remote Clojure
server, the files have to put in place before
issueing the command, eg. via scp or NFS.
<LocalLeader>me *me* *MacroExpand*
Expand the innermost sexpression currently
containing the cursor using macroexpand.
<LocalLeader>m1 *m1* *MacroExpand1*
Same as MacroExpand, but use macroexpand-1.
<LocalLeader>lw *lw* *DocLookupWord*
Lookup up the word under the cursor and print
the documentation for it via (doc).
<LocalLeader>li *li* *DocLookupInteractive*
Lookup the documentation of an arbitrary word.
The user is prompted for input.
<LocalLeader>fd *fd* *FindDoc*
Find a the documentation for a given pattern
with (find-doc). The user is prompted for input.
<LocalLeader>jw *jw* *JavadocLookupWord*
Open the javadoc for the word under the cursor
in an external browser.
<LocalLeader>ji *ji* *JavadocLookupInteractive*
Open the javadoc for an arbitrary word in an
external browser. The user is prompted for input.
<LocalLeader>sw *sw* *SourceLookupWord*
Show a read-only view of the source the word under
the cursor. For this to work, the source must be
available in the Classpath or as a file (depending
on how the source was loaded).
<LocalLeader>si *si* *SourceLookupInteractive*
Show a read-only view of the source of an arbitrary
word. For this to work, the source must be available
in the Classpath or as a file (depending on how the
source was loaded).
<LocalLeader>gw *gw* *GotoSourceWord*
Goto the source of the word under the cursor. For this
to work, the source must be available in a directory
of the |'path'| option. The directories in the
CLOJURE_SOURCE_DIRS environment variable will be added
to the |'path'| setting.
<LocalLeader>gi *gi* *GotoSourceInteractive*
Goto the source of an arbitrary word. For this to work,
the source must be available in a directory of the
|'path'| option. The directories in the
CLOJURE_SOURCE_DIRS environment variable will be added
to the |'path'| setting.
<LocalLeader>mw *mw* *MetaLookupWord*
Lookup the meta data of the word under the cursor.
<LocalLeader>mi *mi* *MetaLookupInteractive*
Lookup the meta data of an arbitrary word. The
user is prompted for input.
<LocalLeader>sr *sr* *StartRepl*
Start a new Vim Repl in a fresh buffer. There
might be multiple Repls at the same time.
<LocalLeader>sR *sR* *StartLocalRepl*
Start a new Vim Repl in a fresh buffer. Initialise
the namespace to be the namespace of the current
buffer. Note: this will 'require' the namespace!
The following key mappings are also supported if the dynamic features are
turned off.
<LocalLeader>aw *aw* *AddToLispWords*
Add the word under the cursor to the lispwords option
of the buffer. This modifies the way the form is
indented.
Vim Repl
--------
Start a Repl via the |sr| shortcut. At the prompt just type expressions.
Hitting enter will determine, whether the expression is complete and
will send it to the Clojure instance. In case the expression is incomplete,
eg. after "(defn foo" will result in a newline for multiline expressions.
Previously sent expressions may be recalled via <C-Up> and <C-Down>.
Note: sending multiple expressions will save them in the same history
entry. So playing back with <C-Up> will again send all of the contained
expressions.
The Plugs are:
- <Plug>ClojureReplEnterHook for the enter key
- <Plug>ClojureReplUpHistory for going backwards in history (<C-Up>)
- <Plug>ClojureReplDownHistory for going forwards in history (<C-Down>)
The following convenience commands are provided:
- ,close - close the Repl and free the Repl resources in the server process
- ,st - print a stack trace of *e as with clojure.contrib.stacktrace
- ,ct - print a cause trace of *e as with clojure.contrib.stacktrace
- ,toggle-pprint - toggle pretty-printing of evaluated values
You can also start a Repl with the :ClojureRepl command. This command works
regardless of the type of the current buffer, while the shortcuts only work in
Clojure buffers.
Pretty Printing
---------------
In case Tom Faulhaber's cl-format package is available in the Classpath
it will be used for pretty printing, eg. of macroexpansions. The Repl
can be told to use pretty printing via a global Var.
>
(set! vimclojure.repl/*print-pretty* true)
<
Omni Completion
---------------
VimClojure supports omni completion for Clojure code. Hitting <C-X><C-O> in
insert mode will try to provide completions for the item in front of the
cursor.
The completion tries to be somewhat intelligent in what it completes.
- a word starting with an upper case letter will be completed to an
imported class.
Str<C-x><C-o> => String, StringBuilder, ...
- a word containing dots will be completed to a namespace.
c.c<C-x><C-o> => clojure.core, clojure.contrib.repl-utils, ...
- everything else will be completed to a Var, an alias or namespace.
- a word containing a slash will be handled differently
- if the word starts with an upper case letter, will complete
static fields of the given class
String/va<C-x><C-o> => String/valueOf
- otherwise it is treated as a namespace or alias
clojure.core/re<C-x><C-o> => clojure.core/read, ...
The completion uses certain characters to split the matching. This are
hyphens and (for namespaces) dots. So r-s<C-x><C-o> matches read-string.
Note: Completion of symbols and keywords is also provided via the <C-N>
functionality of Vim.
Known Issues
------------
There seems to be a race condition in nailgun. At the moment there is
no solution to this problem. In case you get errors with valid looking
input for vim, please contact me.
License
-------
Copyright (c) 2008,2009,2010 Meikel Brandmeyer, Frankfurt am Main
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
==============================================================================
.. vim: set ft=help norl ts=8 tw=78 et :