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⟦71a728a30⟧ Ada Source

    Length: 5120 (0x1400)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Primary_Predicate, seg_03b952, seg_03c0d0, seg_03c53b, separate Generic_Predicate

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─⟦5a81ac88f⟧ »Space Info Vol 1« 
        └─⟦this⟧ 
└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─⟦cfc2e13cd⟧ »Space Info Vol 2« 
        └─⟦this⟧ 

separate (Generic_Predicate)
package body Primary_Predicate is
    function Make_Alias_Definition (The_Alias : Alias.Name) return Object is
    begin
        return Object'(Kind => Alias_Definition, The_Alias => The_Alias);
    end Make_Alias_Definition;


    function Make_Conjunction
                (Left, Right : Generic_Predicate.Object) return Object is
    begin
        return Object'(Kind                => Predicate_Conjunction,
                       The_Left_Predicate  => Left,
                       The_Right_Predicate => Right);
    end Make_Conjunction;


    function Make_Collection
                (Of_Objects : Generic_Predicate.Objects) return Object is
    begin
        return Object'(Kind           => Predicate_Collection,
                       The_Collection =>
                          new Generic_Predicate.Objects'(Of_Objects));
    end Make_Collection;


    function Get (From_Object : Object) return Generic_Predicate.Objects is
    begin
        return From_Object.The_Collection.all;
    end Get;


    function Get (From_Object : Object) return Alias.Name is
    begin
        return From_Object.The_Alias;
    end Get;



    procedure Get (From_Object :     Object;
                   Left, Right : out Generic_Predicate.Object) is
    begin
        Left  := From_Object.The_Left_Predicate;
        Right := From_Object.The_Right_Predicate;
    end Get;



    function Is_A_Collection (What : Object) return Boolean is
    begin
        return What.Kind = Predicate_Collection;
    end Is_A_Collection;


    function Is_A_Conjunction (What : Object) return Boolean is
    begin
        return What.Kind = Predicate_Conjunction;
    end Is_A_Conjunction;


    function Is_A_Define_As (What : Object) return Boolean is
    begin
        return What.Kind = Alias_Definition;
    end Is_A_Define_As;


    procedure Put (The_Object : Object; Where : Output_Stream.Object) is
        use Output_Stream;
    begin
        case The_Object.Kind is
            when Alias_Definition =>
                Put ("Define_As(", Where);
                Alias.Put (The_Object.The_Alias, Where);
                Put (")", Where);
            when Predicate_Conjunction =>
                Put (The_Object.The_Left_Predicate, Where);
                Put (" and ", Where);
                Put (The_Object.The_Right_Predicate, Where);
            when Predicate_Collection =>
                Put ("Collection of predicates", Where);
        end case;
    end Put;


    function Match (Value : Slot.Object; Against : Object) return Boolean is
    begin  
        case Against.Kind is
            when Alias_Definition =>
                Alias.Set (Against.The_Alias, To => Value);
                return True;
            when Predicate_Conjunction =>
                return Match (Value, Against.The_Left_Predicate) and then
                          Match (Value, Against.The_Right_Predicate);
            when Predicate_Collection =>
                return False;
        end case;
    end Match;
end Primary_Predicate;

    nblk1=4
    nid=0
    hdr6=8
        [0x00] rec0=1c rec1=00 rec2=01 rec3=092
        [0x01] rec0=28 rec1=00 rec2=03 rec3=072
        [0x02] rec0=06 rec1=00 rec2=04 rec3=02a
        [0x03] rec0=1b rec1=00 rec2=02 rec3=000
    tail 0x21738c33285258022cb48 0x42a00088462063c03