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top - downloadIndex: ┃ B T ┃
Length: 2135 (0x857)
Types: TextFile
Names: »B«
└─⟦2f6cfab89⟧ Bits:30000547 8mm tape, Rational 1000, !projects 94-01-04
└─ ⟦d65440be7⟧ »DATA«
└─⟦this⟧
with Arguments;
with Object;
with Scanner;
with Statements;
package body Block is
type Node_Structure is
record
Arg : Arguments.Node := Arguments.Empty_Node;
Stat : Statements.Node := Statements.Empty_Node;
end record;
procedure Parse (N : in out Node; Error : out Boolean) is
Failed : Boolean := False;
begin
case Scanner.Get_Token is
when Scanner.L_Obra =>
Scanner.Next_Token;
if Arguments.Is_First (Scanner.Get_Token) then
N := new Node_Structure;
Arguments.Parse (N.Arg, Failed);
if not Failed then
Statements.Parse (N.Stat.Failed);
if not Failed then
case Scanner.Get_Token is
when L_Cbra =>
Scanner.Next_Token;
when others =>
Failed := True;
end case;
end if;
else
Failed := True;
end if;
else
Failed := True;
end if;
when others =>
Failed := True;
end case;
Error := Failed;
end Parse;
function Is_First (T : Scanner.Token) return Boolean is
use Scanner;
begin
return T = Scanner.L_Obra;
end Is_First;
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 := Expression.Interpret (N.Expr);
Result := More_Statements.Interpret (N.More, Result);
when 2 =>
Result := Expression.Interpret (N.Expr);
end case;
return Result;
end Interpret;
end Block;