Update error_reporting.md

flexferrum · web-flow · commit 3ec0727521a0 · 2019-05-17T16:40:17.000+03:00
diff --git a/docs/usage/error_reporting.md b/docs/usage/error_reporting.md
@@ -5,6 +5,20 @@ parent: Jinja2C++ Usage
 nav_order: 7
 ---
 
+# Error reporting
+{: .no_toc }
+
+## Table of contents
+{: .no_toc .text-delta }
+
+1. TOC
+{:toc}
+
+## Common concepts
+
+TODO:
+
+## Parse-time errors
 It's difficult to write complex template completely without errors. Missed braces, wrong characters, incorrect names... Everything is possible. So, it's crucial to be able to get informative error report from the template engine. Jinja2Cpp provides such kind of report. ```Template::Load``` method (and TemplateEnv::LoadTemplate respectively) return instance of ```ErrorInfo``` class which contains details about the error. These details include:
 - Error code
 - Error description
@@ -26,3 +40,7 @@ noname.j2tpl:1:11: error: Expected expression, got: ','
        ---^-------
 ```
 {% endraw %}
+
+## Runtime errors
+
+TODO:
