neovim/runtime/lua/vim/_meta/json.lua
Lewis Russell 9beb40a4db feat(docs): replace lua2dox.lua
Problem:

The documentation flow (`gen_vimdoc.py`) has several issues:
- it's not very versatile
- depends on doxygen
- doesn't work well with Lua code as it requires an awkward filter script to convert it into pseudo-C.
- The intermediate XML files and filters makes it too much like a rube goldberg machine.

Solution:

Re-implement the flow using Lua, LPEG and treesitter.

- `gen_vimdoc.py` is now replaced with `gen_vimdoc.lua` and replicates a portion of the logic.
- `lua2dox.lua` is gone!
- No more XML files.
- Doxygen is now longer used and instead we now use:
  - LPEG for comment parsing (see `scripts/luacats_grammar.lua` and `scripts/cdoc_grammar.lua`).
  - LPEG for C parsing (see `scripts/cdoc_parser.lua`)
  - Lua patterns for Lua parsing (see `scripts/luacats_parser.lua`).
  - Treesitter for Markdown parsing (see `scripts/text_utils.lua`).
- The generated `runtime/doc/*.mpack` files have been removed.
   - `scripts/gen_eval_files.lua` now instead uses `scripts/cdoc_parser.lua` directly.
- Text wrapping is implemented in `scripts/text_utils.lua` and appears to produce more consistent results (the main contributer to the diff of this change).
2024-02-27 14:41:17 +00:00

40 lines
1.4 KiB
Lua

---@meta
---@nodoc
vim.json = {}
-- luacheck: no unused args
---@brief
---
--- This module provides encoding and decoding of Lua objects to and
--- from JSON-encoded strings. Supports |vim.NIL| and |vim.empty_dict()|.
--- Decodes (or "unpacks") the JSON-encoded {str} to a Lua object.
---
--- - Decodes JSON "null" as |vim.NIL| (controllable by {opts}, see below).
--- - Decodes empty object as |vim.empty_dict()|.
--- - Decodes empty array as `{}` (empty Lua table).
---
--- Example:
---
--- ```lua
--- vim.print(vim.json.decode('{"bar":[],"foo":{},"zub":null}'))
--- -- { bar = {}, foo = vim.empty_dict(), zub = vim.NIL }
--- ```
---
---@param str string Stringified JSON data.
---@param opts? table<string,any> Options table with keys:
--- - luanil: (table) Table with keys:
--- * object: (boolean) When true, converts `null` in JSON objects
--- to Lua `nil` instead of |vim.NIL|.
--- * array: (boolean) When true, converts `null` in JSON arrays
--- to Lua `nil` instead of |vim.NIL|.
---@return any
function vim.json.decode(str, opts) end
--- Encodes (or "packs") Lua object {obj} as JSON in a Lua string.
---@param obj any
---@return string
function vim.json.encode(obj) end