lh-dev

Introduction

lh-dev is a VimL for plugins oriented toward coding. It provides language independent functions that can be used by these plugins. The functions themselves can be specialized on a filetype basis.

I'll first present options that end-user of plugins based on lh-dev may tune, then the API itself for coding plugin authors.

Note: Starting with v2.0.0, naming policies and coding style policies have been extracted to lh-style project.

Options

API

This part is just a draft for the moment.

Themes

class

type

function

Function boundaries can be obtained with lh#dev#find_function_boundaries() The analysis currently relies on ctags and on |matchit|. The code can be specialized though (see Inherited filetypes).

Two mappings are also provided to select function boundaries, or to apply operators on function boundaries.

• v_if in strict visual mode (not in select mode)
• o_if on operators.

For instance:

• vif selects the current function
• yif |yank|s the current function
• dif |delete|s the current function

This can also be used to define a way to jump to the start/end of the current function in languages such as C++:

" excerpt from [lh-cpp](https://github.com/LucHermitte/lh-cpp).
nnoremap <silent> <buffer> [[ :call lh#dev#_goto_function_begin()<cr>
onoremap <silent> <buffer> [[ :<c-u>call lh#dev#_goto_function_begin()<cr>
nnoremap <silent> <buffer> ][ :call lh#dev#_goto_function_end()<cr>
onoremap <silent> <buffer> ][ :<c-u>call lh#dev#_goto_function_end()<cr>

instruction

tags

Import statements can be automatically added in files with

`lh#dev#import#add()`.  See the following templates that exploit it:

VimL:" C++ std::vector<> snippet
VimL: let s:value_start = '¡'
VimL: let s:value_end   = s:value_start
VimL: let s:marker_open  = '<+'
VimL: let s:marker_close = '+>'
VimL: call s:AddPostExpandCallback('lh#dev#import#add("<vector>")')
std::vector<¡s:Surround(1, '<+type+>')¡> <++>

VimL:" Python os.path.exists() snippet
VimL:" hint: os.path.exists()
VimL: let s:value_start = '¡'
VimL: let s:value_end   = s:value_start
VimL: let s:marker_open  = '<+'
VimL: let s:marker_close = '+>'
VimL: call s:AddPostExpandCallback('lh#dev#import#add("os", {"symbol": "path"})')
os.path.exists(¡s:Surround(1, '<+type+>')¡)<++>

Filetype polymorphism

Most features provided by lh-dev can be specialized according to the filetype, usually of the current file.

Options

Options can be obtained with:

• lh#ft#option#get(name, filetype [, default [, scopes]])

  This returns which ever exists first among: b:{filetype}_{name}, or g:{filetype}_{name}, or b:{name}, or g:{name}. {default} is returned if none exists. Default value for {default} is g:lh#option#unset.

• lh#ft#option#get_postfixed(name, filetype [, default [, scopes]])

  This returns which ever exists first among: b:{name}_{filetype}, or g:{name}_{filetype}, or b:{name}, or g:{name}. {default} is returned if none exists. Default value for {default} is g:lh#option#unset.

  This flavour is more suited to variables like g:airline#extensions#btw#section and g:airline#extensions#btw#section_qf.

Notes

• Filetype inheritance is supported.
• The order of the scopes for the variables checked can be specified through the optional argument {scope}.

How to set these variables ?

• g:{name} is a global default option for all filetypes best set from a .vimrc or a plugin
• g:{filetype}_{name} is a global default option for a specific filetype (and its sub-filetypes) best set from a .vimrc or a plugin
• b:{name} is a local option for all filetypes, best set for a vimrc_local, or possibly a ftplugin.
• b:{filetype}_{name} is a local option for a specific filetype (and its sub-filetypes), best set for a vimrc_local, or possibly a ftplugin.

Functions

Entry point: lh#dev#{theme}#function()

Default function: lh#dev#{theme}#_function()

Specialized function: lh#dev#{filetype}#{theme}#_function()

lh#dev#option#call(name, filetype [, parameters])

lh#dev#option#pre_load_overrides(name, filetype [, parameters]) lh#dev#option#fast_call(name, filetype [, parameters])

Filetype inheritance

lh#ft#option#inherited_filetypes(filetypes)

Contributing

Language Analysis

Installation

• Requirements: Vim 7.+, lh-vim-lib (v4.6.0), lh-tags (v3.0.0)
• Install with vim-addon-manager any plugin that requires lh-dev should be enough.
• With vim-addon-manager, install lh-dev (this is the preferred method because of the dependencies).

ActivateAddons lh-dev

• vim-flavor (which also supports dependencies)

flavor 'LucHermitte/lh-dev'

• Vundle/NeoBundle:

Bundle 'LucHermitte/lh-vim-lib'
Bundle 'LucHermitte/lh-tags'
Bundle 'LucHermitte/lh-dev'

• Clone from the git repositories

git clone git@github.com:LucHermitte/lh-vim-lib.git
git clone git@github.com:LucHermitte/lh-tags.git
git clone git@github.com:LucHermitte/lh-dev.git