Remote intellisense - details on hover (#2243)

lib/livebook/intellisense.ex

@@ -41,8 +41,8 @@ defmodule Livebook.Intellisense do
     %{items: items}
   end
 
-  def handle_request({:details, line, column}, context, _node) do
-    get_details(line, column, context)
+  def handle_request({:details, line, column}, context, node) do
+    get_details(line, column, context, node)
   end
 
   def handle_request({:signature, hint}, context, node) do
@@ -409,9 +409,11 @@ defmodule Livebook.Intellisense do
   Returns detailed information about an identifier located
   in `column` in `line`.
   """
-  @spec get_details(String.t(), pos_integer(), context()) :: Runtime.details_response() | nil
-  def get_details(line, column, context) do
-    %{matches: matches, range: range} = IdentifierMatcher.locate_identifier(line, column, context)
+  @spec get_details(String.t(), pos_integer(), context(), node()) ::
+          Runtime.details_response() | nil
+  def get_details(line, column, context, node) do
+    %{matches: matches, range: range} =
+      IdentifierMatcher.locate_identifier(line, column, context, node)
 
     case Enum.filter(matches, &include_in_details?/1) do
       [] ->

lib/livebook/intellisense/identifier_matcher.ex

@@ -131,12 +131,12 @@ defmodule Livebook.Intellisense.IdentifierMatcher do
   The function returns range of columns where the identifier
   is located and a list of matching identifier items.
   """
-  @spec locate_identifier(String.t(), pos_integer(), Intellisense.context()) ::
+  @spec locate_identifier(String.t(), pos_integer(), Intellisense.context(), node()) ::
           %{
             matches: list(identifier_item()),
             range: nil | %{from: pos_integer(), to: pos_integer()}
           }
-  def locate_identifier(line, column, intellisense_context) do
+  def locate_identifier(line, column, intellisense_context, node) do
     case Code.Fragment.surround_context(line, {1, column}) do
       %{context: context, begin: {_, from}, end: {_, to}} ->
         fragment = String.slice(line, 0, to - 1)
@@ -146,7 +146,7 @@ defmodule Livebook.Intellisense.IdentifierMatcher do
           intellisense_context: intellisense_context,
           matcher: @exact_matcher,
           type: :locate,
-          node: node()
+          node: node
         }
 
         matches = context_to_matches(context, ctx)

test/livebook/intellisense_test.exs

@@ -1350,49 +1350,52 @@ defmodule Livebook.IntellisenseTest do
     test "returns nil if there are no matches" do
       context = eval(do: nil)
 
-      assert nil == Intellisense.get_details("Unknown.unknown()", 2, context)
+      assert nil == Intellisense.get_details("Unknown.unknown()", 2, context, node())
     end
 
     test "returns subject range" do
       context = eval(do: nil)
 
       assert %{range: %{from: 1, to: 18}} =
-               Intellisense.get_details("Integer.to_string(10)", 15, context)
+               Intellisense.get_details("Integer.to_string(10)", 15, context, node())
 
       assert %{range: %{from: 1, to: 8}} =
-               Intellisense.get_details("Integer.to_string(10)", 2, context)
+               Intellisense.get_details("Integer.to_string(10)", 2, context, node())
     end
 
     test "does not return duplicate details for functions with default arguments" do
       context = eval(do: nil)
 
-      assert %{contents: [_]} = Intellisense.get_details("Integer.to_string(10)", 15, context)
+      assert %{contents: [_]} =
+               Intellisense.get_details("Integer.to_string(10)", 15, context, node())
     end
 
     test "returns details only for exactly matching identifiers" do
       context = eval(do: nil)
 
-      assert nil == Intellisense.get_details("Enum.ma", 6, context)
+      assert nil == Intellisense.get_details("Enum.ma", 6, context, node())
     end
 
     test "returns full docs" do
       context = eval(do: nil)
 
-      assert %{contents: [content]} = Intellisense.get_details("Enum.map", 6, context)
+      assert %{contents: [content]} = Intellisense.get_details("Enum.map", 6, context, node())
       assert content =~ "## Examples"
     end
 
     test "returns deprecated docs" do
       context = eval(do: nil)
 
-      assert %{contents: [content | _]} = Intellisense.get_details("Enum.chunk", 6, context)
+      assert %{contents: [content | _]} =
+               Intellisense.get_details("Enum.chunk", 6, context, node())
+
       assert content =~ "Use Enum.chunk_every/2 instead"
     end
 
     test "returns since docs" do
       context = eval(do: nil)
 
-      assert %{contents: [content]} = Intellisense.get_details("then", 2, context)
+      assert %{contents: [content]} = Intellisense.get_details("then", 2, context, node())
       assert content =~ "Since 1.12.0"
     end
 
@@ -1400,13 +1403,15 @@ defmodule Livebook.IntellisenseTest do
     test "returns full Erlang docs" do
       context = eval(do: nil)
 
-      assert %{contents: [file]} = Intellisense.get_details(":file.read()", 2, context)
+      assert %{contents: [file]} = Intellisense.get_details(":file.read()", 2, context, node())
       assert file =~ "## Performance"
 
-      assert %{contents: [file_read]} = Intellisense.get_details(":file.read()", 8, context)
+      assert %{contents: [file_read]} =
+               Intellisense.get_details(":file.read()", 8, context, node())
+
       assert file_read =~ "Typical error reasons:"
 
-      assert %{contents: [crypto]} = Intellisense.get_details(":crypto", 5, context)
+      assert %{contents: [crypto]} = Intellisense.get_details(":crypto", 5, context, node())
       assert crypto =~ "This module provides a set of cryptographic functions."
     end
 
@@ -1414,27 +1419,30 @@ defmodule Livebook.IntellisenseTest do
     test "properly renders Erlang signature types list" do
       context = eval(do: nil)
 
-      assert %{contents: [file_read]} = Intellisense.get_details(":odbc.connect()", 8, context)
+      assert %{contents: [file_read]} =
+               Intellisense.get_details(":odbc.connect()", 8, context, node())
+
       assert file_read =~ "Ref = connection_reference()"
     end
 
     test "properly parses unicode" do
       context = eval(do: nil)
 
-      assert nil == Intellisense.get_details("msg = '🍵'", 8, context)
+      assert nil == Intellisense.get_details("msg = '🍵'", 8, context, node())
     end
 
     test "handles operators" do
       context = eval(do: nil)
 
-      assert %{contents: [match_op]} = Intellisense.get_details("x = 1", 3, context)
+      assert %{contents: [match_op]} = Intellisense.get_details("x = 1", 3, context, node())
       assert match_op =~ "Match operator."
     end
 
     test "handles local calls" do
       context = eval(do: nil)
 
-      assert %{contents: [to_string_fn]} = Intellisense.get_details("to_string(1)", 3, context)
+      assert %{contents: [to_string_fn]} =
+               Intellisense.get_details("to_string(1)", 3, context, node())
 
       assert to_string_fn =~ "Converts the argument to a string"
     end
@@ -1442,73 +1450,91 @@ defmodule Livebook.IntellisenseTest do
     test "returns nil for bitstring modifiers" do
       context = eval(do: nil)
 
-      assert nil == Intellisense.get_details("<<x :: integer>>", 6, context)
-      assert nil == Intellisense.get_details("<<x :: integer>>", 10, context)
+      assert nil == Intellisense.get_details("<<x :: integer>>", 6, context, node())
+      assert nil == Intellisense.get_details("<<x :: integer>>", 10, context, node())
     end
 
     test "includes full module name in the docs" do
       context = eval(do: nil)
 
-      assert %{contents: [date_range]} = Intellisense.get_details("Date.Range", 8, context)
+      assert %{contents: [date_range]} =
+               Intellisense.get_details("Date.Range", 8, context, node())
+
       assert date_range =~ "Date.Range"
     end
 
     test "returns module-prepended type signatures" do
       context = eval(do: nil)
 
-      assert %{contents: [type]} = Intellisense.get_details("Date.t", 6, context)
+      assert %{contents: [type]} = Intellisense.get_details("Date.t", 6, context, node())
       assert type =~ "Date.t()"
 
-      assert %{contents: [type]} = Intellisense.get_details(":code.load_error_rsn", 8, context)
+      assert %{contents: [type]} =
+               Intellisense.get_details(":code.load_error_rsn", 8, context, node())
+
       assert type =~ ":code.load_error_rsn()"
     end
 
     test "includes type specs" do
       context = eval(do: nil)
 
-      assert %{contents: [type]} = Intellisense.get_details("Date.t", 6, context)
+      assert %{contents: [type]} = Intellisense.get_details("Date.t", 6, context, node())
       assert type =~ "@type t() :: %Date"
 
-      assert %{contents: [type]} = Intellisense.get_details(":code.load_error_rsn", 8, context)
+      assert %{contents: [type]} =
+               Intellisense.get_details(":code.load_error_rsn", 8, context, node())
+
       assert type =~ "@type load_error_rsn() ::"
 
       # opaque types are listed without internal definition
-      assert %{contents: [type]} = Intellisense.get_details("MapSet.internal", 10, context)
+      assert %{contents: [type]} =
+               Intellisense.get_details("MapSet.internal", 10, context, node())
+
       assert type =~ "@opaque internal(value)\n"
     end
 
     test "returns link to online documentation" do
       context = eval(do: nil)
 
-      assert %{contents: [content]} = Intellisense.get_details("Integer", 1, context)
+      assert %{contents: [content]} = Intellisense.get_details("Integer", 1, context, node())
       assert content =~ ~r"https://hexdocs.pm/elixir/[^/]+/Integer.html"
 
       assert %{contents: [content]} =
-               Intellisense.get_details("Integer.to_string(10)", 15, context)
+               Intellisense.get_details("Integer.to_string(10)", 15, context, node())
 
       assert content =~ ~r"https://hexdocs.pm/elixir/[^/]+/Integer.html#to_string/2"
 
       # test elixir types
-      assert %{contents: [content]} = Intellisense.get_details("GenServer.on_start", 12, context)
+      assert %{contents: [content]} =
+               Intellisense.get_details("GenServer.on_start", 12, context, node())
+
       assert content =~ ~r"https://hexdocs.pm/elixir/[^/]+/GenServer.html#t:on_start/0"
 
       # test erlang types
-      assert %{contents: [content]} = Intellisense.get_details(":code.load_ret", 7, context)
+      assert %{contents: [content]} =
+               Intellisense.get_details(":code.load_ret", 7, context, node())
+
       assert content =~ ~r"https://www.erlang.org/doc/man/code.html#type-load_ret"
 
       # test erlang modules on hexdocs
-      assert %{contents: [content]} = Intellisense.get_details(":telemetry.span", 13, context)
+      assert %{contents: [content]} =
+               Intellisense.get_details(":telemetry.span", 13, context, node())
+
       assert content =~ ~r"https://hexdocs.pm/telemetry/[^/]+/telemetry.html#span/3"
 
       # test erlang applications
-      assert %{contents: [content]} = Intellisense.get_details(":code", 3, context)
+      assert %{contents: [content]} = Intellisense.get_details(":code", 3, context, node())
       assert content =~ ~r"https://www.erlang.org/doc/man/code.html"
 
-      assert %{contents: [content]} = Intellisense.get_details(":code.load_binary", 10, context)
+      assert %{contents: [content]} =
+               Intellisense.get_details(":code.load_binary", 10, context, node())
+
       assert content =~ ~r"https://www.erlang.org/doc/man/code.html#load_binary-3"
 
       # test erlang modules
-      assert %{contents: [content]} = Intellisense.get_details(":atomics.new", 11, context)
+      assert %{contents: [content]} =
+               Intellisense.get_details(":atomics.new", 11, context, node())
+
       assert content =~ ~r"https://www.erlang.org/doc/man/atomics.html#new-2"
     end
   end

test/livebook/remote_intellisense_test.exs

@@ -32,7 +32,7 @@ defmodule Livebook.RemoteIntellisenseTest do
       defmodule Elixir.RemoteModule do
         @compile {:autoload, false}
         @moduledoc """
-        Remote module docs
+        RemoteModule module docs
         """
 
         @doc """
@@ -73,7 +73,7 @@ defmodule Livebook.RemoteIntellisenseTest do
                label: "RemoteModule",
                kind: :module,
                detail: "module",
-               documentation: "Remote module docs",
+               documentation: "RemoteModule module docs",
                insert_text: "RemoteModule"
              } in Intellisense.get_completion_items("RemoteModule", context, node)
     end
@@ -103,5 +103,12 @@ defmodule Livebook.RemoteIntellisenseTest do
                }
              ] = Intellisense.get_completion_items(":mnesia.all", context, node)
     end
+
+    test "get details", %{node: node} do
+      context = eval(do: nil)
+
+      assert %{contents: [content]} = Intellisense.get_details("RemoteModule", 6, context, node)
+      assert content =~ "RemoteModule module docs"
+    end
   end
 end