changed handling of explicit termination to be more efficient

This commit is contained in:
alisdair sullivan 2010-05-25 21:03:28 -07:00
parent a87a59fbff
commit 1e476f1797

View file

@ -38,10 +38,6 @@ start(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
start(<<>>, Stack, Callbacks, Opts) ->
fun(Stream) -> start(Stream, Stack, Callbacks, Opts) end.
maybe_done(<<16#FDEF/utf8, Rest/binary>>, [], Callbacks, Opts) when Opts#opts.explicit_termination == true ->
{callback(eof, Callbacks), Rest};
maybe_done(<<Rest/binary>>, [], Callbacks, Opts) when Opts#opts.explicit_termination == false ->
{callback(eof, Callbacks), Rest};
maybe_done(<<?end_object/utf8, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
maybe_done(<<?end_array/utf8, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
@ -54,6 +50,12 @@ maybe_done(<<?solidus/utf8, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opt
maybe_comment(Rest, fun(Resume) -> maybe_done(Resume, Stack, Callbacks, Opts) end);
maybe_done(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
maybe_done(Rest, Stack, Callbacks, Opts);
maybe_done(<<>>, [], Callbacks, Opts) when Opts#opts.explicit_termination == true ->
fun(<<>>) -> {callback(eof, Callbacks), <<>>}
;(Stream) -> maybe_done(Stream, [], Callbacks, Opts)
end;
maybe_done(<<Rest/binary>>, [], Callbacks, _Opts) ->
{callback(eof, Callbacks), Rest};
maybe_done(<<>>, Stack, Callbacks, Opts) ->
fun(Stream) -> maybe_done(Stream, Stack, Callbacks, Opts) end.
@ -237,12 +239,13 @@ zero(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
zero(<<?solidus/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
maybe_comment(Rest, fun(Resume) -> zero(Resume, Stack, Callbacks, Opts, Acc) end);
zero(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == false ->
fun(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc) end;
zero(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<16#FDEF/utf8>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), <<>>}
;(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc)
end.
zero(<<Rest/binary>>, [], Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), Rest}
;(Stream) -> zero(Stream, [], Callbacks, Opts, Acc)
end;
zero(<<>>, Stack, Callbacks, Opts, Acc) ->
fun(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc) end.
integer(<<?end_object/utf8, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
@ -267,12 +270,12 @@ integer(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespac
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
integer(<<?solidus/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
maybe_comment(Rest, fun(Resume) -> integer(Resume, Stack, Callbacks, Opts, Acc) end);
integer(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == false ->
fun(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc) end;
integer(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<16#FDEF/utf8>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), <<>>}
;(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc)
end.
integer(<<>> = Rest, [], Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), Rest}
;(Stream) -> integer(Stream, [], Callbacks, Opts, Acc)
end;
integer(<<>>, Stack, Callbacks, Opts, Acc) ->
fun(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc) end.
fraction(<<?end_object/utf8, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
@ -295,12 +298,12 @@ fraction(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespa
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
fraction(<<?solidus/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
maybe_comment(Rest, fun(Resume) -> fraction(Resume, Stack, Callbacks, Opts, Acc) end);
fraction(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == false ->
fun(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc) end;
fraction(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<16#FDEF/utf8>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), <<>>}
;(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc)
end.
fraction(<<Rest/binary>>, [], Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), Rest}
;(Stream) -> fraction(Stream, [], Callbacks, Opts, Acc)
end;
fraction(<<>>, Stack, Callbacks, Opts, Acc) ->
fun(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc) end.
e(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
@ -333,12 +336,12 @@ exp(<<S/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S)
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
exp(<<?solidus/utf8, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
maybe_comment(Rest, fun(Resume) -> exp(Resume, Stack, Callbacks, Opts, Acc) end);
exp(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == false ->
fun(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc) end;
exp(<<>>, Stack, Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<16#FDEF/utf8>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), <<>>}
;(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc)
end.
exp(<<Rest/binary>>, [], Callbacks, Opts, Acc) when Opts#opts.explicit_termination == true ->
fun(<<>>) -> {callback(eof, callback({number, lists:reverse(Acc)}, Callbacks)), Rest}
;(Stream) -> exp(Stream, [], Callbacks, Opts, Acc)
end;
exp(<<>>, Stack, Callbacks, Opts, Acc) ->
fun(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc) end.
tr(<<"r"/utf8, Rest/binary>>, Stack, Callbacks, Opts) ->
@ -433,8 +436,12 @@ callback(eof, {none, Callbacks}) ->
lists:reverse(Callbacks);
callback(Event, {none, Callbacks}) ->
{none, [Event] ++ Callbacks};
callback(Event, {{Mod, Function}, State}) when is_atom(Mod) ->
callback(eof, {{Mod, Function}, State}) ->
Mod:Function(eof, State);
callback(Event, {{Mod, Function}, State}) ->
{{Mod, Function}, Mod:Function(Event, State)};
callback(eof, {F, State}) ->
F(eof, State);
callback(Event, {F, State}) when is_function(F) ->
{F, F(Event, State)}.