DataMuseum.dk Presents historical artifacts from the history of: Rational R1000/400

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⟦f90bd3320⟧ Ada Source

    Length: 5120 (0x1400)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Compiler_File, seg_047480

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─ ⟦5a81ac88f⟧ »Space Info Vol 1« 
        └─⟦this⟧ 

with Text_Io, Io_Exceptions;
package body Compiler_File is


    Current_File : Text_Io.File_Type;  
    File_Is_Opened : Boolean;

    Current_Char : Character;
    Lookahead : Boolean;

    Current_Line_In_File, Current_Position_In_Line : Natural;
    Is_End_Of_Line : Boolean;


    procedure Open (File_Name : String) is
    begin  
        if (File_Is_Opened) then
            raise A_File_Is_Already_Opened;
        end if;
        Lookahead := False;
        Is_End_Of_Line := False;
        Current_Line_In_File := 1;
        Current_Position_In_Line := 0;
        Text_Io.Open (Current_File, Text_Io.In_File, File_Name);
        File_Is_Opened := True;  
    exception
        when Io_Exceptions.Device_Error |
             Io_Exceptions.Name_Error | Io_Exceptions.Mode_Error =>
            raise File_Does_Not_Exist;
    end Open;

    procedure Close is
    begin  
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        Text_Io.Close (Current_File);  
        File_Is_Opened := False;
    end Close;

    procedure Next is
    begin  
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        if (Lookahead = False) then
            Text_Io.Get (Current_File, Current_Char);
            Is_End_Of_Line := Text_Io.End_Of_Line (Current_File);
            Current_Position_In_Line :=
               Natural (Text_Io.Col (Current_File)) - 1;
            Current_Line_In_File := Natural (Text_Io.Line (Current_File));  
        else
            Lookahead := False;
        end if;
    exception
        when Text_Io.End_Error =>
            raise End_Of_File;
    end Next;

    procedure Unget is
    begin  
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        Lookahead := True;
    end Unget;

    function Get_Value return Character is
    begin
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        return Current_Char;
    end Get_Value;

    function Get_Position_In_Line return Natural is
    begin  
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        return Current_Position_In_Line;
    end Get_Position_In_Line;

    function Get_Line_In_File return Natural is
    begin
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        return Current_Line_In_File;
    end Get_Line_In_File;

    function End_Of_Line return Boolean is
    begin  
        if (not File_Is_Opened) then
            raise File_Has_Never_Been_Opened;
        end if;
        return Is_End_Of_Line;
    end End_Of_Line;

end Compiler_File;

    nblk1=4
    nid=0
    hdr6=8
        [0x00] rec0=24 rec1=00 rec2=01 rec3=040
        [0x01] rec0=02 rec1=00 rec2=03 rec3=02e
        [0x02] rec0=21 rec1=00 rec2=02 rec3=048
        [0x03] rec0=20 rec1=00 rec2=04 rec3=000
    tail 0x21544430a86538ab030f0 0x42a00088462060003