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DataMuseum.dkPresents historical artifacts from the history of: Rational R1000/400 Tapes |
This is an automatic "excavation" of a thematic subset of
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top - downloadIndex: ┃ B T ┃
Length: 1906 (0x772)
Types: TextFile
Names: »B«
└─⟦2f6cfab89⟧ Bits:30000547 8mm tape, Rational 1000, !projects 94-01-04
└─ ⟦d65440be7⟧ »DATA«
└─⟦this⟧
with Text_Io;
package body Scanner is
function At_End (File_Input : in Text_Io.File_Type) return Boolean is
begin
if Look_Ahead then
return False;
else
return Text_Io.End_Of_File (File_Input);
end if;
end At_End;
function Get_Token (File_Input : in Text_Io.File_Type) return Character is
begin
if Look_Ahead then
Look_Ahead := False;
else
if At_End (File_Input) then
Current_Char := Ascii.Eot;
else
if Text_Io.End_Of_Line (File_Input) then
Text_Io.Skip_Line (File_Input);
Current_Char := Ascii.Cr;
else
Text_Io.Get (File_Input, Current_Char);
end if;
end if;
end if;
return Current_Char;
end Get_Token;
function Value (File_Input : in Text_Io.File_Type) return Character is
begin
return Current_Char;
end Value;
procedure Open (File_Input : in out Text_Io.File_Type; Name : in String) is
begin
Text_Io.Open (File_Input, Text_Io.In_File, Name);
Look_Ahead := False;
end Open;
procedure Close (File_Input : in out Text_Io.File_Type) is
begin
Text_Io.Close (File_Input);
end Close;
procedure Next_Token (File_Input : in Text_Io.File_Type) is
begin
if Look_Ahead then
Look_Ahead := False;
else
Text_Io.Get (File_Input, Current_Char);
end if;
end Next_Token;
procedure Unget (File_Input : in Text_Io.File_Type) is
begin
Look_Ahead := True;
end Unget;
function Same_Token (Token_1, Token_2 : Token) return Boolean is
begin
if Token_1 = Token_2 then
return True;
else
return False;
end if;
end Same_Token;
end Scanner;