fix(credo): calculate accurate span from trigger (#427)

Author: mhanberg

Diff for: lib/next_ls/extensions/credo_extension.ex

@@ -111,15 +111,17 @@ defmodule NextLS.CredoExtension do
     {{:credo, path} = namespace, refs} = Map.pop(refs, ref)
 
     for issue <- issues do
+      column = (issue.column || 1) - 1
+
       diagnostic = %Diagnostic{
         range: %Range{
           start: %Position{
             line: issue.line_no - 1,
-            character: (issue.column || 1) - 1
+            character: column
           },
           end: %Position{
             line: issue.line_no - 1,
-            character: 999
+            character: column + String.length(issue.trigger)
           }
         },
         severity: category_to_severity(issue.category),

Diff for: test/next_ls/extensions/credo_extension_test.exs

@@ -108,7 +108,7 @@ defmodule NextLS.CredoExtensionTest do
           },
           "message" => "There should be no calls to `dbg/1`.",
           "range" => %{
-            "end" => %{"character" => 999, "line" => 2},
+            "end" => %{"character" => 7, "line" => 2},
             "start" => %{"character" => 4, "line" => 2}
           },
           "severity" => 2,
@@ -146,7 +146,7 @@ defmodule NextLS.CredoExtensionTest do
           },
           "message" => "There should be no calls to `dbg/1`.",
           "range" => %{
-            "end" => %{"character" => 999, "line" => 2},
+            "end" => %{"character" => 7, "line" => 2},
             "start" => %{"character" => 4, "line" => 2}
           },
           "severity" => 2,
@@ -163,7 +163,7 @@ defmodule NextLS.CredoExtensionTest do
           },
           "message" => "Modules should have a @moduledoc tag.",
           "range" => %{
-            "end" => %{"character" => 999, "line" => 0},
+            "end" => %{"character" => 13, "line" => 0},
             "start" => %{"character" => 10, "line" => 0}
           },
           "severity" => 3,