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Has_Value : out Boolean);
-- Decode a screen offset from a S-expression
procedure Update_Casing
(Casing : in out Encodings.Hex_Casing;
Name : in Atom);
function To_Atom (Value : in Screen_Offset) return Atom;
function To_Atom (Before, After : in Entity) return Atom;
function To_String (Value : in Entity) return String;
------------------------------
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end loop;
Has_Value := True;
Value := Result;
end;
end Read_Screen_Offset;
function To_Atom (Value : in Screen_Offset) return Atom is
Length : Count;
begin
Compute_Length : declare
Left : Screen_Offset := Value;
begin
Length := 1;
while Left >= 10 loop
Length := Length + 1;
Left := Left / 10;
end loop;
end Compute_Length;
return Result : Atom (0 .. Length - 1) do
declare
I : Offset := Result'Last;
Left : Screen_Offset := Value;
begin
loop
Result (I) := Encodings.Digit_0 + Octet (Left mod 10);
I := I - 1;
Left := Left / 10;
exit when Left = 0;
end loop;
pragma Assert (I + 1 = Result'First);
end;
end return;
end To_Atom;
function To_Atom (Before, After : in Entity) return Atom is
begin
return To_Atom (To_String (Before) & "-" & To_String (After));
end To_Atom;
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end Update_Casing;
---------------------------------
-- Public High Level Interface --
---------------------------------
procedure Print
(Output : in out Printers.Printer'Class;
Param : in Parameters) is
begin
-- Newline_At and Newline
Output.Open_List;
Output.Append_Atom (To_Atom ("newline"));
case Param.Newline is
when CR => Output.Append_Atom (To_Atom ("cr"));
when LF => Output.Append_Atom (To_Atom ("lf"));
when CR_LF => Output.Append_Atom (To_Atom ("cr-lf"));
when LF_CR => Output.Append_Atom (To_Atom ("lf-cr"));
end case;
if Param.Newline_At = Entity_Separator'(others => (others => True)) then
Output.Append_Atom (To_Atom ("all"));
else
Output.Append_Atom (To_Atom ("none"));
for Before in Entity loop
for After in Entity loop
if Param.Newline_At (Before, After) then
Output.Append_Atom (To_Atom (Before, After));
end if;
end loop;
end loop;
end if;
Output.Close_List;
-- Space_At
Output.Open_List;
Output.Append_Atom (To_Atom ("space"));
if Param.Space_At = Entity_Separator'(others => (others => True)) then
Output.Append_Atom (To_Atom ("all"));
else
Output.Append_Atom (To_Atom ("none"));
for Before in Entity loop
for After in Entity loop
if Param.Space_At (Before, After) then
Output.Append_Atom (To_Atom (Before, After));
end if;
end loop;
end loop;
end if;
Output.Close_List;
-- Tab_Stop
Output.Open_List;
Output.Append_Atom (To_Atom ("tab-stop"));
Output.Append_Atom (To_Atom (Param.Tab_Stop));
Output.Close_List;
-- Width
if Param.Width > 0 then
Output.Open_List;
Output.Append_Atom (To_Atom ("width"));
Output.Append_Atom (To_Atom (Param.Width));
Output.Close_List;
else
Output.Append_Atom (To_Atom ("no-width"));
end if;
-- Indentation and Indent
if Param.Indentation = 0 then
Output.Append_Atom (To_Atom ("no-indentation"));
else
Output.Open_List;
Output.Append_Atom (To_Atom ("indentation"));
Output.Append_Atom (To_Atom (Param.Indentation));
if Param.Indentation > 1 then
case Param.Indent is
when Spaces =>
Output.Append_Atom (To_Atom ("spaces"));
when Tabs =>
Output.Append_Atom (To_Atom ("tabs"));
when Tabs_And_Spaces =>
Output.Append_Atom (To_Atom ("tabbed-spaces"));
end case;
else
case Param.Indent is
when Spaces =>
Output.Append_Atom (To_Atom ("space"));
when Tabs =>
Output.Append_Atom (To_Atom ("tab"));
when Tabs_And_Spaces =>
Output.Append_Atom (To_Atom ("tabbed-space"));
end case;
end if;
Output.Close_List;
end if;
-- Quoted
case Param.Quoted is
when No_Quoted =>
Output.Append_Atom (To_Atom ("no-quoted-string"));
when Single_Line =>
Output.Append_Atom (To_Atom ("single-line-quoted-string"));
when When_Shorter =>
Output.Append_Atom (To_Atom ("quoted-string-when-shorter"));
end case;
-- Quoted_Escape
Output.Open_List;
Output.Append_Atom (To_Atom ("escape"));
case Param.Quoted_Escape is
when Octal_Escape => Output.Append_Atom (To_Atom ("octal"));
when Hex_Escape => Output.Append_Atom (To_Atom ("hexadecimal"));
end case;
Output.Close_List;
-- Token
Output.Open_List;
Output.Append_Atom (To_Atom ("token"));
case Param.Token is
when No_Token => Output.Append_Atom (To_Atom ("never"));
when Extended_Token => Output.Append_Atom (To_Atom ("extended"));
when Standard_Token => Output.Append_Atom (To_Atom ("standard"));
end case;
Output.Close_List;
-- Char_Encoding
case Param.Char_Encoding is
when UTF_8 => Output.Append_Atom (To_Atom ("utf-8"));
when ASCII => Output.Append_Atom (To_Atom ("ascii"));
when Latin => Output.Append_Atom (To_Atom ("latin-1"));
end case;
-- Hex_Casing
case Param.Hex_Casing is
when Encodings.Upper => Output.Append_Atom (To_Atom ("upper-case"));
when Encodings.Lower => Output.Append_Atom (To_Atom ("lower-case"));
end case;
-- Fallback
case Param.Fallback is
when Base64 => Output.Append_Atom (To_Atom ("base-64"));
when Hexadecimal => Output.Append_Atom (To_Atom ("hexadecimal"));
when Verbatim => Output.Append_Atom (To_Atom ("verbatim"));
end case;
end Print;
procedure Update
(Param : in out Parameters;
Expression : in out Lockable.Descriptor'Class)
is
Interpreter : Interpreters.Interpreter := Config_Interpreter;
begin
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