88 lines
2.7 KiB
Lua
88 lines
2.7 KiB
Lua
local Range = require 'u.range'
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local Renderer = require 'u.renderer'.Renderer
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--- @class u.Buffer
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--- @field buf number
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--- @field private renderer u.Renderer
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local Buffer = {}
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--- @param buf? number
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--- @return u.Buffer
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function Buffer.from_nr(buf)
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if buf == nil or buf == 0 then buf = vim.api.nvim_get_current_buf() end
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local renderer = Renderer.new(buf)
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return setmetatable({
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buf = buf,
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renderer = renderer,
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}, { __index = Buffer })
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end
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--- @return u.Buffer
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function Buffer.current() return Buffer.from_nr(0) end
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--- @param listed boolean
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--- @param scratch boolean
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--- @return u.Buffer
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function Buffer.create(listed, scratch) return Buffer.from_nr(vim.api.nvim_create_buf(listed, scratch)) end
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function Buffer:set_tmp_options()
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self:set_option('bufhidden', 'delete')
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self:set_option('buflisted', false)
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self:set_option('buftype', 'nowrite')
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end
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--- @param nm string
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function Buffer:get_option(nm) return vim.api.nvim_get_option_value(nm, { buf = self.buf }) end
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--- @param nm string
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function Buffer:set_option(nm, val) return vim.api.nvim_set_option_value(nm, val, { buf = self.buf }) end
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--- @param nm string
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function Buffer:get_var(nm) return vim.api.nvim_buf_get_var(self.buf, nm) end
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--- @param nm string
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function Buffer:set_var(nm, val) return vim.api.nvim_buf_set_var(self.buf, nm, val) end
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function Buffer:line_count() return vim.api.nvim_buf_line_count(self.buf) end
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function Buffer:all() return Range.from_buf_text(self.buf) end
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function Buffer:is_empty() return self:line_count() == 1 and self:line(1):text() == '' end
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--- @param line string
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function Buffer:append_line(line)
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local start = -1
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if self:is_empty() then start = -2 end
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vim.api.nvim_buf_set_lines(self.buf, start, -1, false, { line })
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end
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--- @param num number 0-based line index
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function Buffer:line(num)
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if num < 0 then num = self:line_count() + num + 1 end
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return Range.from_line(self.buf, num)
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end
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--- @param start number 0-based line index
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--- @param stop number 0-based line index
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function Buffer:lines(start, stop) return Range.from_lines(self.buf, start, stop) end
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--- @param txt_obj string
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--- @param opts? { contains_cursor?: boolean; pos?: u.Pos }
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function Buffer:text_object(txt_obj, opts)
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opts = vim.tbl_extend('force', opts or {}, { buf = self.buf })
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return Range.from_text_object(txt_obj, opts)
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end
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--- @param event string|string[]
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--- @diagnostic disable-next-line: undefined-doc-name
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--- @param opts vim.api.keyset.create_autocmd
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function Buffer:autocmd(event, opts)
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vim.api.nvim_create_autocmd(event, vim.tbl_extend('force', opts, { buffer = self.buf }))
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end
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--- @param tree Tree
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function Buffer:render(tree) return self.renderer:render(tree) end
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return Buffer
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