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Rational R1000/400

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⟦4f1c05fa3⟧ Ada Source

    Length: 4096 (0x1000)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Expression, seg_038b4e

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

end Expression;

E3 Meta Data

    nblk1=3
    nid=0
    hdr6=6
        [0x00] rec0=1c rec1=00 rec2=01 rec3=022
        [0x01] rec0=20 rec1=00 rec2=02 rec3=012
        [0x02] rec0=02 rec1=00 rec2=03 rec3=000
    tail 0x2173664c484e83912fe4c 0x42a00088462060003