Display unformatted content if pretty printer fails

z_debugger_data_view_ext_demo.prog.abap

@@ -123,3 +123,9 @@ DATA(ls_col2) = nested_struc-col2.
 
 "do something with itab
 DATA(ls_col1) = nested_itab[ 1 ]-col1.
+
+"field symbol
+ASSIGN lt_flights TO FIELD-SYMBOL(<flights>).
+
+"dummy line to add your break-point before the end of the program
+ASSERT 1 = 1.

zcl_op_structure.clas.abap

@@ -217,8 +217,15 @@ CLASS zcl_op_structure IMPLEMENTATION.
     TRY.
         DATA(formated_content) =  zcl_op_pretty_printer_factory=>create( )->format( content_4_display ).
       CATCH  cx_class_not_existent INTO DATA(cx_class_not_existent).
-        "formating went wring, fallback using non formated text
+        "formating went wrong, fallback using non formated text
         formated_content = content_4_display.
+      CATCH  zcx_op_dve INTO DATA(zcx_op_dve).
+        "formating went wrong, fallback using non formated text
+        DATA(unformated_content) = content_4_display.
+        cl_demo_output=>set_mode( cl_demo_output=>text_mode ). "set to text mode to be more compatible with minus signs and so on
+        cl_demo_output=>write_data( unformated_content ).
+        cl_demo_output=>display( ).
+        RETURN.
     ENDTRY.
     cl_demo_output=>set_mode( cl_demo_output=>text_mode ). "set to text mode to be more compatible with minus signs and so on
     cl_demo_output=>write_data( formated_content ).

zcl_op_table.clas.abap

@@ -181,6 +181,13 @@ CLASS zcl_op_table IMPLEMENTATION.
       CATCH  cx_class_not_existent INTO DATA(cx_class_not_existent).
         "formating went wrong, fallback using non formated text
         formated_content = content_4_display.
+      CATCH  zcx_op_dve INTO DATA(zcx_op_dve).
+        "formating went wrong, fallback using non formated text
+        DATA(unformated_content) = content_4_display.
+        cl_demo_output=>set_mode( cl_demo_output=>text_mode ). "set to text mode to be more compatible with minus signs and so on
+        cl_demo_output=>write_data( unformated_content ).
+        cl_demo_output=>display( ).
+        RETURN.
     ENDTRY.
     cl_demo_output=>set_mode( cl_demo_output=>text_mode ). "set to text mode to be more compatible with minus signs and so on
     cl_demo_output=>write_data( formated_content ).

zcl_op_value_pretty_printer.clas.abap

@@ -557,6 +557,9 @@ CLASS zcl_op_value_pretty_printer IMPLEMENTATION.
 
     ENDLOOP.
 
+    IF lx_error IS BOUND.
+      RAISE EXCEPTION TYPE zcx_op_dve EXPORTING previous = lx_error.
+    ENDIF.
   ENDMETHOD.
 
 

zcx_op_dve.clas.abap

@@ -0,0 +1,15 @@
+CLASS zcx_op_dve DEFINITION
+INHERITING FROM cx_static_check
+  PUBLIC
+  FINAL
+  CREATE PUBLIC .
+
+  PUBLIC SECTION.
+  PROTECTED SECTION.
+  PRIVATE SECTION.
+ENDCLASS.
+
+
+
+CLASS zcx_op_dve IMPLEMENTATION.
+ENDCLASS.

zcx_op_dve.clas.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<abapGit version="v1.0.0" serializer="LCL_OBJECT_CLAS" serializer_version="v1.0.0">
+ <asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
+  <asx:values>
+   <VSEOCLASS>
+    <CLSNAME>ZCX_OP_DVE</CLSNAME>
+    <LANGU>E</LANGU>
+    <DESCRIPT>General exception class for Data View Extension</DESCRIPT>
+    <CATEGORY>40</CATEGORY>
+    <STATE>1</STATE>
+    <CLSCCINCL>X</CLSCCINCL>
+    <FIXPT>X</FIXPT>
+    <UNICODE>X</UNICODE>
+   </VSEOCLASS>
+  </asx:values>
+ </asx:abap>
+</abapGit>

zif_op_value_pretty_printer.intf.abap

@@ -10,6 +10,7 @@ INTERFACE zif_op_value_pretty_printer
     "! @parameter r_formated_content | formated value #() construct containing line breaks, spaces and so on
     format
       IMPORTING i_unformated_value_content TYPE string
-      RETURNING VALUE(r_formated_content)  TYPE string.
+      RETURNING VALUE(r_formated_content)  TYPE string
+      RAISING   zcx_op_dve.
 
 ENDINTERFACE.