--| +=========================================================================+
--| |                                                                         |
--| | SCAN.SCAN_COMPILATION_UNIT (body)                                       |
--| |                                                                         |
--| | Greg Janee                                                              |
--| | General Research Corporation                                            |
--| |                                                                         |
--| +=========================================================================+

separate (Scan)
procedure Scan_Compilation_Unit (The_Unit : in Asis.Compilation_Unit; 
				 The_Context : in out Context) is

    Cuid : constant String := "Scan.Scan_Compilation_Unit";
    Puid : constant String := "Scan_Compilation_Unit";

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

begin

    declare
	Context_Clauses : constant Asis.Context_Clause_List := 
	   Asis_Cu.Context_Clause_Elements 
	      (The_Unit, Scan.Include_Context_Clause_Pragmas);
	Declared_Unit : Asis.Declaration := Asis_Cu.Unit_Declaration (The_Unit);
    begin

	if Trace.On then
	    Trace.Log (The_Unit);
	    Trace.Add_Level (Context_Clauses'Length + 1);
	end if;

	Scan.Scan_Context_Clause_List (Context_Clauses, The_Context);

	Scan.Scan_Declaration (Declared_Unit, The_Context);

    end;

exception

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

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

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

end Scan_Compilation_Unit;