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

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⟦b78172d68⟧ Ada Source

    Length: 3072 (0xc00)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Binary, seg_038186

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─ ⟦cfc2e13cd⟧ »Space Info Vol 2« 
        └─⟦this⟧ 

with Unary, More_Binary;

package body Binary is

    type Node_Structure is
        record  
            Rule : Natural range 0 .. 1 := 0;
            Unar : Unary.Node := Unary.Empty_Node;
            More : More_Binary.Node := More_Binary.Empty_Node;
            Line : Object.Index := Scanner.Get_Line_Number;
        end record;

    procedure Parse (N : in out Node) is
        use Scanner;
    begin  
        N := new Node_Structure;
        N.Rule := 0;
        Unary.Parse (N.Unar);
        if Scanner.Get_Token = Scanner.Binary then
            N.Rule := 1;
            More_Binary.Parse (N.More);
        end if;
    end Parse;

    function Is_First (T : Scanner.Token) return Boolean is
        use Scanner;
    begin
        return Unary.Is_First (T);
    end Is_First;

    procedure Unparse (N : Node) is
    begin
        Unary.Unparse (N.Unar);
        if N.Rule = 1 then
            More_Binary.Unparse (N.More);
        end if;
    end Unparse;

    function Interpret (N : Node) return Object.Reference is
        Result : Object.Reference;
    begin
        Scanner.Put_Line_Number (N.Line);
        Result := Unary.Interpret (N.Unar);
        if N.Rule = 1 then
            Result := More_Binary.Interpret (N.More, Result);
        end if;
        return Result;
    end Interpret;
end Binary;

    nblk1=2
    nid=0
    hdr6=4
        [0x00] rec0=25 rec1=00 rec2=01 rec3=016
        [0x01] rec0=0e rec1=00 rec2=02 rec3=001
    tail 0x21735ba1884e67c9c9b18 0x42a00088462060003