(buffer) remove unnecessary utilities

lua/u/buffer.lua

@@ -3,6 +3,8 @@ local Renderer = require('u.renderer').Renderer
 
 --- @class u.Buffer
 --- @field bufnr number
+--- @field b vim.var_accessor
+--- @field bo vim.bo
 --- @field private renderer u.Renderer
 local Buffer = {}
 Buffer.__index = Buffer
@@ -12,7 +14,12 @@ Buffer.__index = Buffer
 function Buffer.from_nr(bufnr)
   if bufnr == nil or bufnr == 0 then bufnr = vim.api.nvim_get_current_buf() end
   local renderer = Renderer.new(bufnr)
-  return setmetatable({ bufnr = bufnr, renderer = renderer }, Buffer)
+  return setmetatable({
+    bufnr = bufnr,
+    b = vim.b[bufnr],
+    bo = vim.bo[bufnr],
+    renderer = renderer,
+  }, Buffer)
 end
 
 --- @return u.Buffer
@@ -26,25 +33,11 @@ function Buffer.create(listed, scratch)
 end
 
 function Buffer:set_tmp_options()
-  self:set_option('bufhidden', 'delete')
-  self:set_option('buflisted', false)
-  self:set_option('buftype', 'nowrite')
+  self.bo.bufhidden = 'delete'
+  self.bo.buflisted = false
+  self.bo.buftype = 'nowrite'
 end
 
---- @param nm string
-function Buffer:get_option(nm) return vim.api.nvim_get_option_value(nm, { buf = self.bufnr }) end
-
---- @param nm string
-function Buffer:set_option(nm, val)
-  return vim.api.nvim_set_option_value(nm, val, { buf = self.bufnr })
-end
-
---- @param nm string
-function Buffer:get_var(nm) return vim.api.nvim_buf_get_var(self.bufnr, nm) end
-
---- @param nm string
-function Buffer:set_var(nm, val) return vim.api.nvim_buf_set_var(self.bufnr, nm, val) end
-
 function Buffer:line_count() return vim.api.nvim_buf_line_count(self.bufnr) end
 
 function Buffer:all() return Range.from_buf_text(self.bufnr) end