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Rational R1000/400

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⟦c319cebad⟧ Ada Source

    Length: 3072 (0xc00)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Expression, seg_03798e

Derivation

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

E3 Source Code



with Lex, Error, Symbol, Debug;
with Term;
package body Expression is

    procedure Parse (N : in out Binary_Tree.Node; Success : in out Boolean) is
        N1, N2 : Binary_Tree.Node;
        Ok : Boolean := True;
    begin  
        N1 := new Binary_Tree.Node_Structure;
        N := N1;
        Success := True;
        Term.Parse (N1.Left_Son, Ok);
        while (Lex.Current_Token_In ((Lex.Plus, Lex.Minus))) loop
            N2 := new Binary_Tree.Node_Structure;
            N1.Right_Son := N2;
            case Lex.Get is
                when Lex.Plus =>
                    Debug.Put (530);
                    Lex.Next;  
                    N1.The_Type := Binary_Tree.Add_Type;
                    Term.Parse (N2.Left_Son, Ok);
                    Success := Success and Ok;
                when Lex.Minus =>
                    Debug.Put (531);
                    Lex.Next;  
                    N1.The_Type := Binary_Tree.Sub_Type;
                    Term.Parse (N2.Left_Son, Ok);
                    Success := Success and Ok;
                when others =>
                    Error.Append (2);
                    Success := False;
            end case;  
            N1 := N2;
        end loop;
    end Parse;


    procedure Generate (N : in out Binary_Tree.Node; The_Value : out Natural) is
        Value1, Value2 : Natural;
    begin
        Term.Generate (N.Left_Son, Value1);
        case N.The_Type is
            when Binary_Tree.Add_Type =>
                Term.Generate (N.Right_Son.Left_Son, Value2);
                The_Value := Value1 + Value2;
            when Binary_Tree.Sub_Type =>
                Term.Generate (N.Right_Son.Left_Son, Value2);
                The_Value := Value1 - Value2;
            when others =>
                The_Value := Value1;
        end case;
    end Generate;

end Expression;

E3 Meta Data

    nblk1=2
    nid=0
    hdr6=4
        [0x00] rec0=1c rec1=00 rec2=01 rec3=022
        [0x01] rec0=1d rec1=00 rec2=02 rec3=001
    tail 0x2173520be84e54ede2b01 0x42a00088462060003