51 lines
1.7 KiB
Lua
51 lines
1.7 KiB
Lua
-- A simple per-session task stack.
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-- Allows pushing locations with a note and returning to them later.
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local ns = vim.api.nvim_create_namespace("stacc")
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local locations = {}
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local stacc = {}
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--- Pushes a new location to the stack
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--- @param description string A message to display when returning to this location
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function stacc.push(description)
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local bufnr = vim.fn.bufnr()
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local line, column = unpack(vim.api.nvim_win_get_cursor(0))
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line = line - 1 -- 0-based :help api-indexing
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local id = vim.api.nvim_buf_set_extmark(bufnr, ns, line, column, {})
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table.insert(locations, {bufnr, id, description, vim.fn.line(".")})
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end
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--- Pops a given number of items from the task stack
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--- Jumps to the last removed item and displays its description
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--- @param count number How many items to pop from the stack
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--- @return string description The description of the current task
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function stacc.pop(count)
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if count > #locations then
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error("stack only has "..#locations.." elements.")
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end
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local description
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local final = vim.api.nvim_win_get_cursor(0)
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for _=1, count do
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local bufnr, id
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bufnr, id, description = unpack(table.remove(locations))
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final = vim.api.nvim_buf_get_extmark_by_id(bufnr, ns, id, {})
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vim.api.nvim_buf_del_extmark(bufnr, ns, id)
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final[1] = final[1] + 1 -- Make line 1-indexed
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final.bufnr = bufnr
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end
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vim.api.nvim_set_current_buf(final.bufnr or 0)
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final.bufnr = nil
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vim.api.nvim_win_set_cursor(0, final)
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return description
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end
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vim.api.nvim_create_user_command("StaccPush", function(params)
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stacc.push(params.args)
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end, {nargs="?"})
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vim.api.nvim_create_user_command("StaccPop", function(params)
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local message = stacc.pop(tonumber(params.args) or 1)
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print(message)
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end, {nargs="?"})
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