feat(dap): add rust types

doc/rust-tools.txt

@@ -1,4 +1,4 @@
-*rust-tools.txt*         For NVIM v0.8.0         Last change: 2023 February 20
+*rust-tools.txt*           For NVIM v0.8.0          Last change: 2023 April 16
 
 ==============================================================================
 Table of Contents                               *rust-tools-table-of-contents*

lua/rust-tools/dap.lua

@@ -134,6 +134,26 @@ function M.start(args)
             args = args.executableArgs or {},
             cwd = args.workspaceRoot,
             stopOnEntry = false,
+            -- Add rust types
+            initCommands = function()
+              -- Find out where to look for the pretty printer Python module
+              local rustc_sysroot = vim.fn.trim(vim.fn.system('rustc --print sysroot'))
+
+              local script_import = 'command script import "' .. rustc_sysroot .. '/lib/rustlib/etc/lldb_lookup.py"'
+              local commands_file = rustc_sysroot .. '/lib/rustlib/etc/lldb_commands'
+
+              local commands = {}
+              local file = io.open(commands_file, 'r')
+              if file then
+                for line in file:lines() do
+                  table.insert(commands, line)
+                end
+                file:close()
+              end
+              table.insert(commands, 1, script_import)
+
+              return commands
+            end,
 
             -- if you change `runInTerminal` to true, you might need to change the yama/ptrace_scope setting:
             --