mirror of
https://github.com/neovim/neovim.git
synced 2026-05-24 05:40:08 +00:00
9174157f74
Problem:
For a given position, it is not easy to compare which of several other positions is closest to it.
Solution:
Add support for converting `vim.Pos` to a buffer byte offset.
This allows for sorting, e.g:
```lua
table.sort(positions, function(pos1, pos2)
return pos1:to_offset() < pos2:to_offset()
end
```
Or a binary search, e.g:
```lua
vim.list.bisect(positions, pos, { key = function(pos) return pos:to_offset() end })
```
161 lines
3.7 KiB
Lua
161 lines
3.7 KiB
Lua
-- Test suite for vim.pos
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local t = require('test.testutil')
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local n = require('test.functional.testnvim')()
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local eq = t.eq
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local dedent = t.dedent
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local clear = n.clear
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local exec_lua = n.exec_lua
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local insert = n.insert
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describe('vim.pos', function()
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before_each(clear)
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it('creates a position', function()
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local pos, buf = exec_lua(function()
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local buf = vim.api.nvim_create_buf(false, true)
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return vim.pos(buf, 3, 5), buf
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end)
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eq(3, pos[1])
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eq(5, pos[2])
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eq(buf, pos[3])
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end)
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it('creates a position with buf=0', function()
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local pos, buf = exec_lua(function()
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return vim.pos(0, 3, 5), vim.api.nvim_get_current_buf()
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end)
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eq(3, pos[1])
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eq(5, pos[2])
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eq(buf, pos[3])
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end)
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it('comparisons by overloaded operators', function()
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local buf = exec_lua(function()
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return vim.api.nvim_create_buf(false, true)
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end)
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eq(
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true,
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exec_lua(function()
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return vim.pos(buf, 3, 5) < vim.pos(buf, 4, 5)
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end)
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)
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eq(
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true,
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exec_lua(function()
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return vim.pos(buf, 3, 5) <= vim.pos(buf, 3, 6)
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end)
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)
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eq(
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true,
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exec_lua(function()
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return vim.pos(buf, 3, 5) > vim.pos(buf, 2, 5)
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end)
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)
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eq(
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true,
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exec_lua(function()
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return vim.pos(buf, 3, 5) >= vim.pos(buf, 3, 5)
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end)
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)
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eq(
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true,
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exec_lua(function()
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return vim.pos(buf, 3, 5) == vim.pos(buf, 3, 5)
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end)
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)
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eq(
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true,
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exec_lua(function()
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return vim.pos(buf, 3, 5) ~= vim.pos(buf, 3, 6)
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end)
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)
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end)
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it('converts between vim.Pos and lsp.Position', function()
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local buf = exec_lua(function()
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return vim.api.nvim_get_current_buf()
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end)
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insert('Neovim 是 Vim 的分支，专注于扩展性和可用性。')
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local lsp_pos = exec_lua(function()
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local pos = vim.pos(buf, 0, 36)
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return pos:to_lsp('utf-16')
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end)
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eq({ line = 0, character = 20 }, lsp_pos)
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local pos = exec_lua(function()
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return vim.pos.lsp(buf, lsp_pos, 'utf-16')
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end)
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eq({
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0,
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36,
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buf,
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}, pos)
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end)
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it("converts between vim.Pos and extmark on buffer's last line", function()
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local buf = exec_lua(function()
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return vim.api.nvim_get_current_buf()
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end)
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insert('Some text')
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local extmark_pos = {
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exec_lua(function()
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local pos = vim.pos(buf, 1, 0)
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return pos:to_extmark()
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end),
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}
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eq({ 0, 9 }, extmark_pos)
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local pos = exec_lua(function()
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return vim.pos.extmark(buf, extmark_pos[1], extmark_pos[2])
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end)
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eq({ 0, 9, buf }, pos)
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local extmark_pos2 = {
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exec_lua(function()
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local pos2 = vim.pos(buf, 0, 9)
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return pos2:to_extmark()
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end),
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}
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eq({ 0, 9 }, extmark_pos2)
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local pos2 = exec_lua(function()
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return vim.pos.extmark(buf, extmark_pos2[1], extmark_pos2[2])
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end)
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eq({ 0, 9, buf }, pos2)
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end)
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it('converts between vim.Pos and buffer offset', function()
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local buf = exec_lua(function()
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return vim.api.nvim_get_current_buf()
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end)
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insert(dedent [[
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first
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second
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third
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]])
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local offsets = exec_lua(function()
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return {
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vim.pos(buf, 0, 0):to_offset(),
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vim.pos(buf, 0, 3):to_offset(),
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vim.pos(buf, 1, 0):to_offset(),
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vim.pos(buf, 3, 0):to_offset(),
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}
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end)
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eq({ 0, 3, 6, 19 }, offsets)
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local positions = exec_lua(function()
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return {
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vim.pos.offset(buf, 0),
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vim.pos.offset(buf, 3),
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vim.pos.offset(buf, 6),
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vim.pos.offset(buf, 19),
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}
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end)
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eq({
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{ 0, 0, buf },
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{ 0, 3, buf },
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{ 1, 0, buf },
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{ 3, 0, buf },
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}, positions)
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end)
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end)
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