update document

Author: shun

README.md

@@ -1,6 +1,9 @@
 # ddc-vim-lsp
 
 vim-lsp for ddc.vim.
+- ddc.vim : v0.4.2
+
+<img src="https://user-images.githubusercontent.com/212602/131358924-a62bd611-81ea-413b-aba5-2439fc42ae66.png" width="600"><br>
 
 ## Required
 

doc/study.md

@@ -1,3 +1,75 @@
+# v0.1.0
+
+```plantuml
+
+box "vim/neovim" #A5D6A7
+  participant core
+end box
+
+box "ddc-vim-lsp" #FFCCBC
+  participant autoload
+  participant plugin
+  participant source
+end box
+
+box "ddc" #B2EBF2
+  participant ddc
+end box
+
+box "denops" #B2EBF2
+  participant denops
+end box
+
+box "vim-lsp" #B2EBF2
+  participant vimlsp as "vim-lsp"
+end box
+
+box "lsp" #BBDEFB
+  participant lsp as "lsp server"
+end box
+
+== input text ==
+core -> ddc: detect input text
+
+ddc -> source: gatherCandidates
+  source -> autoload: call ddc_vim_lsp#request
+  autoload ->> vimlsp: call lsp#send_request
+  source --> ddc: return empty candidates
+
+  ...
+
+  group lsp sequence
+  vimlsp ->> lsp:
+  lsp ->> vimlsp:
+  end
+
+  vimlsp ->> autoload: callback
+  autoload -> vimlsp: call lsp#omni#get_vim_completion_items
+  return
+  autoload -> core: store lsp items
+  note right
+  store it on 
+  vim global variable
+  endnote
+
+  autoload -> ddc: call ddc#refresh_candidates
+  return
+  ...
+
+  ddc -> source: gatherCandidates
+  note right
+  "gatnerCandidates" is called automatically
+  to trigger by "ddc#refresh_candidates".
+  endnote
+  source -> denops: get lsp items
+  denops -> core: get variable
+  return variable
+  denops --> source: lsp items
+  source --> ddc: return candidates
+
+```
+
+# v0.0.1
 
 ```plantuml
 
@@ -31,14 +103,16 @@ end box
 core -> ddc: detect input text
 ddc -> source: gatherCandidates
 source -> autoload: call ddc_vim_lsp#request
-autoload ->> vimlsp: call send_request
+autoload ->> vimlsp: call lsp#send_request
 
 group lsp sequence
 vimlsp ->> lsp:
 lsp ->> vimlsp:
 end
 
-vimlsp ->> autoload: call back
+vimlsp ->> autoload: callback
+autoload -> vimlsp: call lsp#omni#get_vim_completion_items
+return
 autoload ->> source: call anonymous func
 source -> source: call toCandidates
 source ->> ddc: return candidates