From c1bcc569f1eb5df51ade0579d2cfd5dfb7f2ff11 Mon Sep 17 00:00:00 2001
From: Marc Jakobi <marc.jakobi@tiko.energy>
Date: Mon, 23 Oct 2023 01:27:34 +0200
Subject: [PATCH] feat(lsp): support `rust-analyzer/viewRecursiveMemoryLayout`

---
 lua/rustaceanvim/commands/init.lua          |  3 ++
 lua/rustaceanvim/commands/memory_layout.lua | 31 +++++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 lua/rustaceanvim/commands/memory_layout.lua

diff --git a/lua/rustaceanvim/commands/init.lua b/lua/rustaceanvim/commands/init.lua
index 528c2db2..99726c87 100644
--- a/lua/rustaceanvim/commands/init.lua
+++ b/lua/rustaceanvim/commands/init.lua
@@ -56,6 +56,9 @@ local command_tbl = {
   joinLines = function(_)
     require('rustaceanvim.commands.join_lines')()
   end,
+  memoryLayout = function(_)
+    require('rustaceanvim.commands.memory_layout')()
+  end,
   moveItem = function(args)
     if #args == 0 then
       vim.notify("moveItem: called without 'up' or 'down'", vim.log.levels.ERROR)
diff --git a/lua/rustaceanvim/commands/memory_layout.lua b/lua/rustaceanvim/commands/memory_layout.lua
new file mode 100644
index 00000000..fb68a253
--- /dev/null
+++ b/lua/rustaceanvim/commands/memory_layout.lua
@@ -0,0 +1,31 @@
+local ui = require('rustaceanvim.ui')
+
+local M = {}
+
+---@return lsp_range_params
+
+---@type integer | nil
+local latest_buf_id = nil
+
+local function parse(_)
+  local ret = {}
+  -- TODO:
+  error('not implemented')
+  return ret
+end
+
+local function handler(_, result)
+  ui.delete_buf(latest_buf_id)
+  latest_buf_id = vim.api.nvim_create_buf(false, true)
+  ui.split(true, latest_buf_id)
+  vim.api.nvim_buf_set_name(latest_buf_id, 'memory.layout.rust')
+  vim.api.nvim_buf_set_text(latest_buf_id, 0, 0, 0, 0, parse(result))
+  ui.resize(true, '-25')
+end
+
+local rl = require('rustaceanvim.rust_analyzer')
+function M.memory_layout()
+  rl.buf_request(0, 'rust-analyzer/viewRecursiveMemoryLayout', vim.lsp.util.make_position_params(), handler)
+end
+
+return M.memory_layout