Давайте создадим компилятор!   ::   Креншоу Джек

}

function Locate(N: Symbol): integer;

begin

Locate := Lookup(@ST, n, NEntry);

end;

{–}

{ Look for Symbol in Table }

function InTable(n: Symbol): Boolean;

begin

InTable := Lookup(@ST, n, NEntry) <> 0;

end;

{–}

{ Check to See if an Identifier is in the Symbol Table }

{ Report an error if it's not. }

procedure CheckTable(N: Symbol);

begin

if not InTable(N) then Undefined(N);

end;

{–}

{ Check the Symbol Table for a Duplicate Identifier }

{ Report an error if identifier is already in table.