FUGR: Add documentation (longtexts) (#5795)

After #5786, Ref #5774

Serialize and deserialize documentation of function group, function modules, and parameters. 

Test case: 
https://github.com/abapGit-tests/FUGR_docu

Co-authored-by: Lars Hvam <larshp@hotmail.com>

src/objects/zcl_abapgit_object_fugr.clas.abap

@@ -5,6 +5,11 @@ CLASS zcl_abapgit_object_fugr DEFINITION PUBLIC INHERITING FROM zcl_abapgit_obje
   PROTECTED SECTION.
   PRIVATE SECTION.
 
+    CONSTANTS:
+      c_longtext_id_prog     TYPE dokil-id VALUE 'RE',
+      c_longtext_id_func     TYPE dokil-id VALUE 'FU',
+      c_longtext_id_func_exc TYPE dokil-id VALUE 'FX'.
+
     TYPES:
       ty_rs38l_incl_tt TYPE STANDARD TABLE OF rs38l_incl WITH DEFAULT KEY .
     TYPES:
@@ -73,6 +78,20 @@ CLASS zcl_abapgit_object_fugr DEFINITION PUBLIC INHERITING FROM zcl_abapgit_obje
         !iv_transport TYPE trkorr
       RAISING
         zcx_abapgit_exception .
+    METHODS serialize_function_docs
+      IMPORTING
+        !iv_prog_name TYPE programm
+        !it_functions TYPE ty_function_tt
+        !ii_xml       TYPE REF TO zif_abapgit_xml_output
+      RAISING
+        zcx_abapgit_exception .
+    METHODS deserialize_function_docs
+      IMPORTING
+        !iv_prog_name TYPE programm
+        !it_functions TYPE ty_function_tt
+        !ii_xml       TYPE REF TO zif_abapgit_xml_input
+      RAISING
+        zcx_abapgit_exception .
     METHODS serialize_xml
       IMPORTING
         !ii_xml TYPE REF TO zif_abapgit_xml_output
@@ -142,7 +161,7 @@ ENDCLASS.
 
 
 
-CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
+CLASS zcl_abapgit_object_fugr IMPLEMENTATION.
 
 
   METHOD check_rfc_parameters.
@@ -307,6 +326,34 @@ CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
   ENDMETHOD.
 
 
+  METHOD deserialize_function_docs.
+
+    FIELD-SYMBOLS <ls_func> LIKE LINE OF it_functions.
+
+    zcl_abapgit_factory=>get_longtexts( )->deserialize(
+      iv_longtext_id   = c_longtext_id_prog
+      iv_object_name   = iv_prog_name
+      ii_xml           = ii_xml
+      iv_main_language = mv_language ).
+
+    LOOP AT it_functions ASSIGNING <ls_func>.
+      zcl_abapgit_factory=>get_longtexts( )->deserialize(
+        iv_longtext_name = |LONGTEXTS_{ <ls_func>-funcname }|
+        iv_longtext_id   = c_longtext_id_func
+        iv_object_name   = <ls_func>-funcname
+        ii_xml           = ii_xml
+        iv_main_language = mv_language ).
+      zcl_abapgit_factory=>get_longtexts( )->deserialize(
+        iv_longtext_name = |LONGTEXTS_{ <ls_func>-funcname }___EXC|
+        iv_longtext_id   = c_longtext_id_func_exc
+        iv_object_name   = <ls_func>-funcname
+        ii_xml           = ii_xml
+        iv_main_language = mv_language ).
+    ENDLOOP.
+
+  ENDMETHOD.
+
+
   METHOD deserialize_includes.
 
     DATA: lo_xml       TYPE REF TO zif_abapgit_xml_input,
@@ -869,6 +916,31 @@ CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
   ENDMETHOD.
 
 
+  METHOD serialize_function_docs.
+
+    FIELD-SYMBOLS <ls_func> LIKE LINE OF it_functions.
+
+    zcl_abapgit_factory=>get_longtexts( )->serialize(
+      iv_longtext_id = c_longtext_id_prog
+      iv_object_name = iv_prog_name
+      ii_xml         = ii_xml ).
+
+    LOOP AT it_functions ASSIGNING <ls_func>.
+      zcl_abapgit_factory=>get_longtexts( )->serialize(
+        iv_longtext_name = |LONGTEXTS_{ <ls_func>-funcname }|
+        iv_longtext_id   = c_longtext_id_func
+        iv_object_name   = <ls_func>-funcname
+        ii_xml           = ii_xml ).
+      zcl_abapgit_factory=>get_longtexts( )->serialize(
+        iv_longtext_name = |LONGTEXTS_{ <ls_func>-funcname }___EXC|
+        iv_longtext_id   = c_longtext_id_func_exc
+        iv_object_name   = <ls_func>-funcname
+        ii_xml           = ii_xml ).
+    ENDLOOP.
+
+  ENDMETHOD.
+
+
   METHOD serialize_includes.
 
     DATA: lt_includes TYPE ty_sobj_name_tt.
@@ -1107,6 +1179,7 @@ CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
 
     io_xml->read( EXPORTING iv_name = 'FUNCTIONS'
                   CHANGING cg_data = lt_functions ).
+
     deserialize_functions(
       it_functions = lt_functions
       ii_log       = ii_log
@@ -1126,13 +1199,20 @@ CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
 
     io_xml->read( EXPORTING iv_name = 'DYNPROS'
                   CHANGING cg_data = lt_dynpros ).
+
     deserialize_dynpros( lt_dynpros ).
 
     io_xml->read( EXPORTING iv_name = 'CUA'
                   CHANGING cg_data = ls_cua ).
+
     deserialize_cua( iv_program_name = lv_program_name
                      is_cua = ls_cua ).
 
+    deserialize_function_docs(
+      iv_prog_name = lv_program_name
+      it_functions = lt_functions
+      ii_xml       = io_xml ).
+
   ENDMETHOD.
 
 
@@ -1216,6 +1296,7 @@ CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
     serialize_xml( io_xml ).
 
     lt_functions = serialize_functions( ).
+
     io_xml->add( iv_name = 'FUNCTIONS'
                  ig_data = lt_functions ).
 
@@ -1243,5 +1324,9 @@ CLASS ZCL_ABAPGIT_OBJECT_FUGR IMPLEMENTATION.
                    ig_data = ls_cua ).
     ENDIF.
 
+    serialize_function_docs( iv_prog_name = lv_program_name
+                             it_functions = lt_functions
+                             ii_xml       = io_xml ).
+
   ENDMETHOD.
 ENDCLASS.