Fix error with prism when method given no arguments

such as:

  p = Proc.new

This is now highlighted, and it wasn't before.

Author: luke-gru

lib/error_highlight/base.rb

@@ -181,7 +181,12 @@ def spot
         when :name
           spot_call_for_name
         when :args
-          spot_call_for_args
+          _nd_recv, _mid, nd_args = @node.children
+          if nd_args
+            spot_call_for_args(nd_args)
+          else
+            spot_call_for_name
+          end
         end
 
       when :ATTRASGN
@@ -244,7 +249,11 @@ def spot
         when :name
           prism_spot_call_for_name
         when :args
-          prism_spot_call_for_args
+          if @node.arguments.nil?
+            prism_spot_call_for_name
+          else
+            prism_spot_call_for_args
+          end
         end
 
       when :local_variable_operator_write_node
@@ -356,8 +365,7 @@ def spot_call_for_name
     #     ^^
     #   x += 1
     #        ^
-    def spot_call_for_args
-      _nd_recv, _mid, nd_args = @node.children
+    def spot_call_for_args(nd_args)
       if nd_args && nd_args.first_lineno == nd_args.last_lineno
         fetch_line(nd_args.first_lineno)
         @beg_column = nd_args.first_column

test/test_error_highlight.rb

@@ -63,6 +63,10 @@ def assert_error_message(klass, expected_msg, &blk)
     ONE_RECV_MESSAGE = "1:Integer"
   end
 
+  def using_prism?
+    RubyVM::InstructionSequence.compile("").to_a[4][:parser] == :prism
+  end
+
   def test_CALL_noarg_1
     assert_error_message(NoMethodError, <<~END) do
 undefined method `foo' for #{ NIL_RECV_MESSAGE }
@@ -197,6 +201,18 @@ def test_CALL_arg_6
     end
   end
 
+  def test_call_node_no_arguments
+    assert_error_message(ArgumentError, <<~END) do
+tried to create Proc object without a block (ArgumentError)
+
+      Proc.new
+          ^^^^
+    END
+
+      Proc.new
+    end
+  end
+
   def test_QCALL_1
     assert_error_message(NoMethodError, <<~END) do
 undefined method `foo' for #{ ONE_RECV_MESSAGE }
@@ -1339,7 +1355,7 @@ def test_spot_with_node
     # We can't revisit instruction sequences to find node ids if the prism
     # compiler was used instead of the parse.y compiler. In that case, we'll
     # omit some tests.
-    omit if RubyVM::InstructionSequence.compile("").to_a[4][:parser] == :prism
+    omit if using_prism?
 
     begin
       raise_name_error