add lang#erlang layer (#2074)

* Add lang#erlang layer

* Fix erlang omni patterns

* Add doc

* Add repl support for erlang

* Add lang#erlang layer

* Type

autoload/SpaceVim/layers/lang/erlang.vim

@@ -0,0 +1,64 @@
+"=============================================================================
+" erlang.vim --- erlang support for SpaceVim
+" Copyright (c) 2016-2017 Wang Shidong & Contributors
+" Author: Wang Shidong < wsdjeg at 163.com >
+" URL: https://spacevim.org
+" License: GPLv3
+"=============================================================================
+
+function! SpaceVim#layers#lang#erlang#plugins() abort
+  let plugins = []
+  call add(plugins, ['vim-erlang/vim-erlang-compiler', {'on_ft' : 'erlang'}])
+  call add(plugins, ['vim-erlang/vim-erlang-omnicomplete', {'on_ft' : 'erlang'}])
+  call add(plugins, ['vim-erlang/vim-erlang-runtime', {'on_ft' : 'erlang'}])
+  call add(plugins, ['vim-erlang/vim-erlang-tags', {'on_ft' : 'erlang'}])
+  return plugins
+endfunction
+
+
+function! SpaceVim#layers#lang#erlang#config() abort
+  call SpaceVim#plugins#repl#reg('erlang', 'erl')
+  " call SpaceVim#plugins#runner#reg_runner('erlang', ['erlc -o #TEMP# %s', 'erl -pa #TEMP#'])
+  call SpaceVim#mapping#space#regesit_lang_mappings('erlang', function('s:language_specified_mappings'))
+  " call SpaceVim#mapping#gd#add('erlang', function('s:go_to_def'))
+endfunction
+function! s:language_specified_mappings() abort
+  " call SpaceVim#mapping#space#langSPC('nmap', ['l','r'],
+        " \ 'call SpaceVim#plugins#runner#open()',
+        " \ 'execute current file', 1)
+  if SpaceVim#layers#lsp#check_filetype('erlang')
+    nnoremap <silent><buffer> K :call SpaceVim#lsp#show_doc()<CR>
+
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'd'],
+          \ 'call SpaceVim#lsp#show_doc()', 'show_document', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'e'],
+          \ 'call SpaceVim#lsp#rename()', 'rename symbol', 1)
+  " else
+    " nnoremap <silent><buffer> K :call alchemist#exdoc()<CR>
+    " call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'd'],
+          " \ 'call alchemist#exdoc()', 'show_document', 1)
+    " call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 't'],
+          " \ 'call alchemist#jump_tag_stack()', 'jump to tag stack', 1)
+  endif
+  let g:_spacevim_mappings_space.l.s = {'name' : '+Send'}
+  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 'i'],
+        \ 'call SpaceVim#plugins#repl#start("erlang")',
+        \ 'start REPL process', 1)
+  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 'l'],
+        \ 'call SpaceVim#plugins#repl#send("line")',
+        \ 'send line and keep code buffer focused', 1)
+  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 'b'],
+        \ 'call SpaceVim#plugins#repl#send("buffer")',
+        \ 'send buffer and keep code buffer focused', 1)
+  call SpaceVim#mapping#space#langSPC('nmap', ['l','s', 's'],
+        \ 'call SpaceVim#plugins#repl#send("selection")',
+        \ 'send selection and keep code buffer focused', 1)
+endfunction
+
+function! s:go_to_def() abort
+  if SpaceVim#layers#lsp#check_filetype('erlang')
+    call SpaceVim#lsp#go_to_def()
+  else
+    normal! gd
+  endif
+endfunction

config/plugins/deoplete.vim

@@ -95,6 +95,11 @@ let g:deoplete#keyword_patterns.clojure = '[\w!$%&*+/:<=>?@\^_~\-\.#]*'
 " ocaml
 let g:deoplete#ignore_sources.ocaml = ['buffer', 'around', 'omni']
 
+" erlang
+let g:deoplete#omni#input_patterns.erlang = get(g:deoplete#omni#input_patterns, 'erlang', [
+      \'[^. \t0-9]\.\w*',
+      \])
+
 " public settings
 call deoplete#custom#source('_', 'matchers', ['matcher_full_fuzzy'])
 call deoplete#custom#source('file/include', 'matchers', ['matcher_head'])

docs/cn/layers/index.md

@@ -76,6 +76,7 @@ Vim 插件以及相关配置。而 SpaceVim 是以模块的方式来组织和管
 | [lang#c](lang/c/)                                     | 这一模块为 c/c++/object-c 的开发提供了支持，包括代码补全、语法检查等特性。                                                                |
 | [lang#dart](lang/dart/)                               | 这一模块为 dart 开发提供支持，包括代码补全、语法检查、代码格式化等特性。                                                                  |
 | [lang#elixir](lang/elixir/)                           | 这一模块为 elixir 开发提供支持，包括代码补全、语法检查、代码格式化等特性。                                                                |
+| [lang#erlang](lang/erlang/)                           | 这一模块为 erlang 开发提供支持，包括代码补全、语法检查、代码格式化等特性。                                                                |
 | [lang#go](lang/go/)                                   | 这一模块为 go 开发提供支持，包括代码补全、语法检查、代码格式化等特性。                                                                    |
 | [lang#haskell](lang/haskell/)                         | 这一模块为 haskell 开发提供支持，包括代码补全、语法检查、代码格式化等特性。                                                               |
 | [lang#html](lang/html/)                               | 这一模块为 html 开发提供支持，包括代码补全、语法检查、代码格式化等特性。                                                                  |

docs/cn/layers/lang/erlang.md

@@ -0,0 +1,61 @@
+---
+title: "SpaceVim lang#erlang 模块"
+description: "这一模块为 erlang 开发提供支持，包括代码补全、语法检查、代码格式化等特性。"
+lang: cn
+---
+
+# [可用模块](../../) >> lang#erlang
+
+<!-- vim-markdown-toc GFM -->
+
+- [模块简介](#模块简介)
+- [功能特性](#功能特性)
+- [启用模块](#启用模块)
+- [快捷键](#快捷键)
+  - [语言专属快捷键](#语言专属快捷键)
+  - [交互式编程](#交互式编程)
+
+<!-- vim-markdown-toc -->
+
+## 模块简介
+
+这一模块为 SpaceVim 提供了 erlang 开发支持，包括代码补全、语法检查、以及代码格式化等特性。
+
+## 功能特性
+
+- 代码补全
+- 文档查询
+- 跳转定义处
+
+同时，SpaceVim 还为 erlang 开发提供了交互式编程和语言服务器等功能。若要启用语言服务器，需要载入 `lsp` 模块。
+
+## 启用模块
+
+可通过在配置文件内加入如下配置来启用该模块：
+
+```toml
+[[layers]]
+  name = "lang#erlang"
+```
+
+## 快捷键
+
+### 语言专属快捷键
+
+| 按键            | 功能描述                                |
+| --------------- | --------------------------------------- |
+| `SPC l d` / `K` | 展示光标函数或变量相关文档（需要 `lsp` 模块）              |
+| `SPC l e`       | 重命名光标函数或变量（需要 `lsp` 模块） |
+| `g d`           | 跳至函数或变量定义处（需要 `lsp` 模块）                    |
+
+### 交互式编程
+
+启动 `erl` 交互进程，快捷键为： `SPC l s i`。
+
+将代码传输给 REPL 进程执行：
+
+| 快捷键      | 描述                    |
+| ----------- | ----------------------- |
+| `SPC l s b` | 发送整个文件内容至 REPL |
+| `SPC l s l` | 发送当前行内容至 REPL   |
+| `SPC l s s` | 发送已选中的内容至 REPL |

docs/layers/index.md

@@ -75,6 +75,7 @@ enable = false
 | [lang#dart](lang/dart/)               | This layer is for dart development, provide autocompletion, syntax checking, code format for dart file.                                                             |
 | [lang#dockerfile](lang/dockerfile/)   | This layer adds DockerFile to SpaceVim                                                                                                                              |
 | [lang#elixir](lang/elixir/)           | This layer is for elixir development, provide autocompletion, syntax checking, code format for elixir file.                                                         |
+| [lang#erlang](lang/erlang/)           | This layer is for erlang development, provide autocompletion, syntax checking, code format for erlang file.                                                         |
 | [lang#go](lang/go/)                   | This layer is for golang development. It also provides additional language-specific key mappings.                                                                   |
 | [lang#haskell](lang/haskell/)         | haskell language support for SpaceVim, includes code completion, syntax checking, jumping to definition, also provides language server protocol support for haskell |
 | [lang#html](lang/html/)               | Edit html in SpaceVim, with this layer, this layer provides code completion, syntax checking and code formatting for html.                                          |

docs/layers/lang/WebAssembly.md

@@ -27,5 +27,5 @@ To use this configuration layer, update custom configuration file with:
 
 ```toml
 [[layers]]
-  name = "lang#kotlin"
+  name = "lang#WebAssembly"
 ```

docs/layers/lang/erlang.md

@@ -0,0 +1,64 @@
+---
+title: "SpaceVim lang#elang layer"
+description: "This layer is for erlang development, provide autocompletion, syntax checking, code format for erlang file."
+---
+
+# [Available Layers](../../) >> lang#erlang
+
+<!-- vim-markdown-toc GFM -->
+
+- [Description](#description)
+- [Features](#features)
+- [Install](#install)
+  - [Layer](#layer)
+- [Key bindings](#key-bindings)
+  - [Language specific key bindings](#language-specific-key-bindings)
+  - [Inferior REPL process](#inferior-repl-process)
+
+<!-- vim-markdown-toc -->
+
+## Description
+
+This layer is for erlang development.
+
+## Features
+
+- code completion
+- syntax highlighting
+- syntax checking
+
+SpaceVim also provides REPL, code runner and Language Server protocol support for erlang. to enable language server protocol
+for erlang, you need to load `lsp` layer for erlang.
+
+## Install
+
+### Layer
+
+To use this configuration layer, update custom configuration file with:
+
+```toml
+[[layers]]
+  name = "lang#erlang"
+```
+
+## Key bindings
+
+### Language specific key bindings
+
+| Key binding     | Description                                  |
+| --------------- | -------------------------------------------- |
+| `SPC l d` / `K` | Show doc of cursor symbol (need `lsp` layer) |
+| `SPC l e`       | Rename symbol (need `lsp` layer)             |
+| `g d`           | Jump to definition (need `lsp` layer)        |
+
+### Inferior REPL process
+
+Start a `erl` inferior REPL process with `SPC l s i`. 
+
+Send code to inferior process commands:
+
+| Key Binding | Description                                      |
+| ----------- | ------------------------------------------------ |
+| `SPC l s b` | send buffer and keep code buffer focused         |
+| `SPC l s l` | send line and keep code buffer focused           |
+| `SPC l s s` | send selection text and keep code buffer focused |

wiki/en/Following-HEAD.md

@@ -25,6 +25,7 @@ The next release is v0.9.0.
 - Add `lang#nim` layer ([#2018](https://github.com/SpaceVim/SpaceVim/pull/2018))
 - Add `lang#purescript` layer ([#2054](https://github.com/SpaceVim/SpaceVim/pull/2054))
 - Add `lang#WebAssembly` layer ([#2068](https://github.com/SpaceVim/SpaceVim/pull/2068))
+- Add `lang#erlang` layer ([#2074](https://github.com/SpaceVim/SpaceVim/pull/2074))
 
 ### Improvement