--| +=========================================================================+
--| |                                                                         |
--| | REFERENCE_SCAN.SCAN_SELECT_STATEMENT_ARM (body)                         |
--| |                                                                         |
--| | Greg Janee                                                              |
--| | General Research Corporation                                            |
--| |                                                                         |
--| +=========================================================================+

separate (Reference_Scan)
procedure Scan_Select_Statement_Arm (The_Arm : in Asis.Select_Statement_Arm; 
				     The_Context : in Context) is

    Cuid : constant String := "Reference_Scan.Scan_Select_Statement_Arm";
    Puid : constant String := "Scan_Select_Statement_Arm";

    package Error renames Reference_Scan.Error_Handling_Support;
    package Trace renames Reference_Scan.Trace_Support;

--| +-------------------------------------------------------------------------+
--| | SCAN_CONDITIONAL_ENTRY_CALL_ELSE_ARM (local)                            |
--| +-------------------------------------------------------------------------+

    procedure Scan_Conditional_Entry_Call_Else_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Conditional_Entry_Call_Else_Arm";

    begin

	declare
	    Statements : constant Asis.Statement_List := 
	       Asis_S.Else_Statements 
		  (The_Arm, Reference_Scan.Include_Select_Statement_Pragmas);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (Statements'Length);
	    end if;

	    Reference_Scan.Scan_Statement_List (Statements, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Conditional_Entry_Call_Else_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_CONDITIONAL_ENTRY_CALL_SELECT_ARM (local)                          |
--| +-------------------------------------------------------------------------+

    procedure Scan_Conditional_Entry_Call_Select_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Conditional_Entry_Call_Select_Arm";

    begin

	declare
	    Statements : constant Asis.Statement_List := 
	       Asis_S.Entry_Call_Statements 
		  (The_Arm, Reference_Scan.Include_Select_Statement_Pragmas);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (Statements'Length);
	    end if;

	    Reference_Scan.Scan_Statement_List (Statements, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Conditional_Entry_Call_Select_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_SELECTIVE_WAIT_ELSE_ARM (local)                                    |
--| +-------------------------------------------------------------------------+

    procedure Scan_Selective_Wait_Else_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Selective_Wait_Else_Arm";

    begin

	declare
	    Statements : constant Asis.Statement_List := 
	       Asis_S.Else_Statements 
		  (The_Arm, Reference_Scan.Include_Select_Statement_Pragmas);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (Statements'Length);
	    end if;

	    Reference_Scan.Scan_Statement_List (Statements, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Selective_Wait_Else_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_SELECTIVE_WAIT_OR_ARM (local)                                      |
--| +-------------------------------------------------------------------------+

    procedure Scan_Selective_Wait_Or_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Selective_Wait_Or_Arm";

    begin

	declare
	    Alternative : Asis.Select_Alternative := 
	       Asis_S.Arm_Select_Alternative (The_Arm);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (1);
	    end if;

	    Reference_Scan.Scan_Select_Alternative (Alternative, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Selective_Wait_Or_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_SELECTIVE_WAIT_SELECT_ARM (local)                                  |
--| +-------------------------------------------------------------------------+

    procedure Scan_Selective_Wait_Select_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Selective_Wait_Select_Arm";

    begin

	declare
	    Alternative : Asis.Select_Alternative := 
	       Asis_S.Arm_Select_Alternative (The_Arm);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (1);
	    end if;

	    Reference_Scan.Scan_Select_Alternative (Alternative, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Selective_Wait_Select_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_TIMED_ENTRY_CALL_OR_ARM (local)                                    |
--| +-------------------------------------------------------------------------+

    procedure Scan_Timed_Entry_Call_Or_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Timed_Entry_Call_Or_Arm";

    begin

	declare
	    Statements : constant Asis.Statement_List := 
	       Asis_S.Timed_Entry_Call_Or_Statements 
		  (The_Arm, Reference_Scan.Include_Select_Statement_Pragmas);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (Statements'Length);
	    end if;

	    Reference_Scan.Scan_Statement_List (Statements, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Timed_Entry_Call_Or_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_TIMED_ENTRY_CALL_SELECT_ARM (local)                                |
--| +-------------------------------------------------------------------------+

    procedure Scan_Timed_Entry_Call_Select_Arm 
		 (The_Arm : in Asis.Select_Statement_Arm; 
		  The_Context : in Context) is

	Puid : constant String := "Scan_Timed_Entry_Call_Select_Arm";

    begin

	declare
	    Statements : constant Asis.Statement_List := 
	       Asis_S.Entry_Call_Statements 
		  (The_Arm, Reference_Scan.Include_Select_Statement_Pragmas);
	begin

	    if Trace.On then
		Trace.Log (The_Arm, The_Context);
		Trace.Add_Level (Statements'Length);
	    end if;

	    Reference_Scan.Scan_Statement_List (Statements, The_Context);

	end;

    exception

	when Asis.Asis_Inappropriate_Element =>
	    Error.Log (Error.A_Bad_Element, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Asis.Asis_Failed =>
	    Error.Log (Error.An_Asis_Failure, Cuid, Puid, The_Arm);
	    raise Traversal_Error;

	when Traversal_Error =>
	    Error.Log (Error.A_Previous_Error, Cuid, Puid, The_Arm);
	    raise;

    end Scan_Timed_Entry_Call_Select_Arm;

--| +-------------------------------------------------------------------------+
--| | SCAN_SELECT_STATEMENT_ARM (exported)                                    |
--| +-------------------------------------------------------------------------+

begin

    case Asis_S.Select_Statement_Arm_Kind (The_Arm) is
	when Asis_S.A_Selective_Wait_Select_Arm =>
	    Scan_Selective_Wait_Select_Arm (The_Arm, The_Context);
	when Asis_S.A_Selective_Wait_Or_Arm =>
	    Scan_Selective_Wait_Or_Arm (The_Arm, The_Context);
	when Asis_S.A_Selective_Wait_Else_Arm =>
	    Scan_Selective_Wait_Else_Arm (The_Arm, The_Context);
	when Asis_S.A_Conditional_Entry_Call_Select_Arm =>
	    Scan_Conditional_Entry_Call_Select_Arm (The_Arm, The_Context);
	when Asis_S.A_Conditional_Entry_Call_Else_Arm =>
	    Scan_Conditional_Entry_Call_Else_Arm (The_Arm, The_Context);
	when Asis_S.A_Timed_Entry_Call_Select_Arm =>
	    Scan_Timed_Entry_Call_Select_Arm (The_Arm, The_Context);
	when Asis_S.A_Timed_Entry_Call_Or_Arm =>
	    Scan_Timed_Entry_Call_Or_Arm (The_Arm, The_Context);
	when Asis_S.Not_A_Select_Statement_Arm =>
	    Error.Log (Error.An_Unhandled_Case, Cuid, Puid, The_Arm);
	    if Reference_Scan.Raise_Exception_On_Unhandled_Case then
		raise Traversal_Error;
	    else
		if Trace.On then
		    Trace.Log (The_Arm, The_Context);
		end if;
	    end if;
    end case;

end Scan_Select_Statement_Arm;