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Rational R1000/400 Tapes

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Index: ┃ B T

⟦39f682a69⟧ TextFile

    Length: 1592 (0x638)
    Types: TextFile
    Names: »B«

Derivation

└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
    └─ ⟦129cab021⟧ »DATA« 
        └─⟦this⟧ 

TextFile

with Text_Io;
with Lex;
with Object;  
with Error_Broadcaster;
with Statements;
with Unparser;
package body More_Statements is
    type Node_Structure is
        record
            Rule : Natural range 0 .. 1 := 0;
            State : Statements.Node := Statements.Empty_Node;
        end record;

    procedure Parse (N : in out Node; Error : out Boolean) is
        Failed : Boolean := False;

    begin  
        N := new Node_Structure;

        case Lex.Get_Token is

            when Lex.Dot =>
                N.Rule := 1;
                Lex.Next_Token;
                Statements.Parse (N.State, Failed);
            when Lex.L_End | Lex.Close_Bracket =>
                null;
            when others =>
                raise Error_Broadcaster.Dot_Is_Missing;
        end case;
        Error := Failed;
    end Parse;

    procedure Unparse (N : in out Node) is
    begin
        case N.Rule is
            when 0 =>
                null;
            when 1 =>
                Unparser.Put (".");
                Unparser.Put_Line ("");
                Statements.Unparse (N.State);

        end case;  
    end Unparse;
    function Interpret (N : Node;
                        Inherited : Object.Reference := Object.Void_Reference)
                       return Object.Reference is
        Result : Object.Reference;
    begin
        case N.Rule is
            when 0 =>
                Result := Inherited;
            when 1 =>
                Result := Statements.Interpret (N.State, Inherited);
        end case;
        return Result;
    end Interpret;
end More_Statements;