decoders for utf16 and utf32, both big and little endian
This commit is contained in:
alisdair sullivan
parent
7ffb26e7c2
commit
d777717062
4 changed files with 1744 additions and 0 deletions
436
src/jsx_utf16b.erl
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436
src/jsx_utf16b.erl
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-module(jsx_utf16b).
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-export([start/4]).
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-include("jsx_common.hrl").
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%% this code is mostly autogenerated and mostly ugly. apologies. for more insight on
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%% Callbacks or Opts, see the comments accompanying decoder/2 (in jsx.erl). Stack
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%% is a stack of flags used to track depth and to keep track of whether we are
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%% returning from a value or a key inside objects. all pops, peeks and pushes are
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%% inlined. the code that handles naked values and comments is not optimized by the
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%% compiler for efficient matching, but you shouldn't be using naked values or comments
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%% anyways, they are horrible and contrary to the spec.
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start(<<?start_object/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
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start(<<?start_array/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
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start(<<?quote/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
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string(Rest, Stack, Callbacks, Opts, []);
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start(<<$t/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
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tr(Rest, Stack, Callbacks, Opts);
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start(<<$f/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
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fa(Rest, Stack, Callbacks, Opts);
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start(<<$n/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
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nu(Rest, Stack, Callbacks, Opts);
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start(<<?negative/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
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negative(Rest, Stack, Callbacks, Opts, "-");
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start(<<?zero/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
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zero(Rest, Stack, Callbacks, Opts, "0");
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start(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S), Opts#opts.naked_values == true ->
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integer(Rest, Stack, Callbacks, Opts, [S]);
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start(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end);
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start(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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start(Rest, Stack, Callbacks, Opts);
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start(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> start(Stream, Stack, Callbacks, Opts) end.
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maybe_done(<<?end_object/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
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maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
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maybe_done(<<?end_array/utf16-big, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
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maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
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maybe_done(<<?comma/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
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key(Rest, [key|Stack], Callbacks, Opts);
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maybe_done(<<?comma/utf16-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts) ->
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value(Rest, Stack, Callbacks, Opts);
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maybe_done(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> maybe_done(Resume, Stack, Callbacks, Opts) end);
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maybe_done(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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maybe_done(Rest, Stack, Callbacks, Opts);
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maybe_done(<<>>, [], Callbacks, _Opts) ->
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callback(eof, Callbacks);
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maybe_done(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> maybe_done(Stream, Stack, Callbacks, Opts) end.
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object(<<?end_object/utf16-big, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
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maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
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object(<<?quote/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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string(Rest, Stack, Callbacks, Opts, []);
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object(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end);
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object(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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object(Rest, Stack, Callbacks, Opts);
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object(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> object(Stream, Stack, Callbacks, Opts) end.
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array(<<?quote/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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string(Rest, Stack, Callbacks, Opts, []);
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array(<<?start_object/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
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array(<<?start_array/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
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array(<<?end_array/utf16-big, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
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maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
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array(<<$t/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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tr(Rest, Stack, Callbacks, Opts);
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array(<<$f/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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fa(Rest, Stack, Callbacks, Opts);
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array(<<$n/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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nu(Rest, Stack, Callbacks, Opts);
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array(<<?negative/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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negative(Rest, Stack, Callbacks, Opts, "-");
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array(<<?zero/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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zero(Rest, Stack, Callbacks, Opts, "0");
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array(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
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integer(Rest, Stack, Callbacks, Opts, [S]);
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array(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end);
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array(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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array(Rest, Stack, Callbacks, Opts);
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array(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> array(Stream, Stack, Callbacks, Opts) end.
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value(<<?quote/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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string(Rest, Stack, Callbacks, Opts, []);
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value(<<?start_object/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
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value(<<?start_array/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
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value(<<$t/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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tr(Rest, Stack, Callbacks, Opts);
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value(<<$f/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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fa(Rest, Stack, Callbacks, Opts);
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value(<<$n/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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nu(Rest, Stack, Callbacks, Opts);
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value(<<?negative/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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negative(Rest, Stack, Callbacks, Opts, "-");
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value(<<?zero/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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zero(Rest, Stack, Callbacks, Opts, "0");
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value(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
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integer(Rest, Stack, Callbacks, Opts, [S]);
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value(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end);
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value(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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value(Rest, Stack, Callbacks, Opts);
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value(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> value(Stream, Stack, Callbacks, Opts) end.
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colon(<<?colon/utf16-big, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
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value(Rest, [object|Stack], Callbacks, Opts);
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colon(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end);
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colon(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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colon(Rest, Stack, Callbacks, Opts);
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colon(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> colon(Stream, Stack, Callbacks, Opts) end.
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key(<<?quote/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
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string(Rest, Stack, Callbacks, Opts, []);
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key(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end);
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key(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
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key(Rest, Stack, Callbacks, Opts);
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key(<<>>, Stack, Callbacks, Opts) ->
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fun(Stream) -> key(Stream, Stack, Callbacks, Opts) end.
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%% string has an additional parameter, an accumulator (Acc) used to hold the intermediate
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%% representation of the string being parsed. using a list of integers representing
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%% unicode codepoints is faster than constructing binaries, many of which will be
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%% converted back to lists by the user anyways.
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string(<<?quote/utf16-big, Rest/binary>>, [key|_] = Stack, Callbacks, Opts, Acc) ->
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colon(Rest, Stack, callback({key, lists:reverse(Acc)}, Callbacks), Opts);
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string(<<?quote/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback({string, lists:reverse(Acc)}, Callbacks), Opts);
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string(<<?rsolidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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escape(Rest, Stack, Callbacks, Opts, Acc);
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string(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_noncontrol(S) ->
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string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
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string(<<>>, Stack, Callbacks, Opts, Acc) ->
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fun(Stream) -> string(Stream, Stack, Callbacks, Opts, Acc) end.
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%% only thing to note here is the additional accumulator passed to escaped_unicode used
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%% to hold the codepoint sequence. unescessary, but nicer than using the string
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%% accumulator.
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escape(<<"b"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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string(Rest, Stack, Callbacks, Opts, "\b" ++ Acc);
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escape(<<"f"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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string(Rest, Stack, Callbacks, Opts, "\f" ++ Acc);
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escape(<<"n"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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string(Rest, Stack, Callbacks, Opts, "\n" ++ Acc);
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escape(<<"r"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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string(Rest, Stack, Callbacks, Opts, "\r" ++ Acc);
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escape(<<"t"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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string(Rest, Stack, Callbacks, Opts, "\t" ++ Acc);
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escape(<<"u"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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escaped_unicode(Rest, Stack, Callbacks, Opts, Acc, []);
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escape(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc)
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when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus ->
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string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
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escape(<<>>, Stack, Callbacks, Opts, Acc) ->
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fun(Stream) -> escape(Stream, Stack, Callbacks, Opts, Acc) end.
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%% this code is ugly and unfortunate, but so is json's handling of escaped unicode
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%% codepoint sequences. if the ascii option is present, the sequence is converted
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%% to a codepoint and inserted into the string if it represents an ascii value. if
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%% the codepoint option is present the sequence is converted and inserted as long
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%% as it represents a valid 16 bit integer value (this is where json's spec gets
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%% insane). any other option and the sequence is converted back to an erlang string
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%% and appended to the string in place.
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escaped_unicode(<<D/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, String, [C, B, A]) ->
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X = erlang:list_to_integer([A, B, C, D], 16),
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case Opts#opts.escaped_unicode of
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ascii when X < 16#0080 ->
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string(Rest, Stack, Callbacks, Opts, [X] ++ String)
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; codepoint ->
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string(Rest, Stack, Callbacks, Opts, [X] ++ String)
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; _ ->
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string(Rest, Stack, Callbacks, Opts, [?rsolidus, $u, A, B, C, D] ++ String)
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end;
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escaped_unicode(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) ->
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escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc);
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escaped_unicode(<<>>, Stack, Callbacks, Opts, String, Acc) ->
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fun(Stream) -> escaped_unicode(Stream, Stack, Callbacks, Opts, String, Acc) end.
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%% like strings, numbers are collected in an intermediate accumulator before
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%% being emitted to the callback handler. no processing of numbers is done in
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%% process, it's left for the user, though there are convenience functions to
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%% convert them into erlang floats/integers in jsx_utils.erl.
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%% TODO: actually write that jsx_utils.erl module mentioned above...
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negative(<<"0"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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zero(Rest, Stack, Callbacks, Opts, "0" ++ Acc);
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negative(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
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integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
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negative(<<>>, Stack, Callbacks, Opts, Acc) ->
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fun(Stream) -> negative(Stream, Stack, Callbacks, Opts, Acc) end.
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zero(<<?end_object/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
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zero(<<?end_array/utf16-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
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zero(<<?comma/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
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key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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zero(<<?comma/utf16-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
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value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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zero(<<?decimalpoint/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
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zero(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
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maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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zero(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> zero(Resume, Stack, Callbacks, Opts, Acc) end);
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zero(<<>>, [], Callbacks, _Opts, Acc) ->
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callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
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zero(<<>>, Stack, Callbacks, Opts, Acc) ->
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fun(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc) end.
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integer(<<?end_object/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
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integer(<<?end_array/utf16-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
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integer(<<?comma/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
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key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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integer(<<?comma/utf16-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
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value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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integer(<<?decimalpoint/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
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integer(<<?zero/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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integer(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
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integer(<<"e"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
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integer(<<"E"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
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integer(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
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integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
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integer(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
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maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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integer(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
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maybe_comment(Rest, fun(Resume) -> integer(Resume, Stack, Callbacks, Opts, Acc) end);
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integer(<<>>, [], Callbacks, _Opts, Acc) ->
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callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
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integer(<<>>, Stack, Callbacks, Opts, Acc) ->
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fun(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc) end.
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fraction(<<?end_object/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
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fraction(<<?end_array/utf16-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
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maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
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fraction(<<?comma/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
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key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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fraction(<<?comma/utf16-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
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value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
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fraction(<<?zero/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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fraction(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
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fraction(<<"e"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
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e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<"E"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
fraction(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?solidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> fraction(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
fraction(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
fraction(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
e(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
|
||||
ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> e(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
ex(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
ex(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> ex(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
exp(<<?end_object/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?end_array/utf16-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?comma/utf16-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?comma/utf16-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?zero/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
exp(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
exp(<<S/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?rsolidus/utf16-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> exp(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
exp(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
exp(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
tr(<<"r"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tru(Rest, Stack, Callbacks, Opts);
|
||||
tr(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tr(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
tru(<<"u"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
true(Rest, Stack, Callbacks, Opts);
|
||||
tru(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tru(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
true(<<"e"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, true}, Callbacks), Opts);
|
||||
true(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> true(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fa(<<"a"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fal(Rest, Stack, Callbacks, Opts);
|
||||
fa(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fa(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fal(<<"l"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fals(Rest, Stack, Callbacks, Opts);
|
||||
fal(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fal(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fals(<<"s"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
false(Rest, Stack, Callbacks, Opts);
|
||||
fals(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fals(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
false(<<"e"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, false}, Callbacks), Opts);
|
||||
false(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> false(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nu(<<"u"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nul(Rest, Stack, Callbacks, Opts);
|
||||
nu(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nu(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nul(<<"l"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
null(Rest, Stack, Callbacks, Opts);
|
||||
nul(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nul(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
null(<<"l"/utf16-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, null}, Callbacks), Opts);
|
||||
null(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> null(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% comments are c style, /* blah blah */ and are STRONGLY discouraged. any unicode
|
||||
%% character is valid in a comment, except, obviously the */ sequence which ends
|
||||
%% the comment. they're implemented as a closure called when the comment ends that
|
||||
%% returns execution to the point where the comment began. comments are not
|
||||
%% recorded in any way, simply parsed.
|
||||
|
||||
maybe_comment(<<?star/utf16-big, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
maybe_comment(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment(Stream, Resume) end.
|
||||
|
||||
|
||||
comment(<<?star/utf16-big, Rest/binary>>, Resume) ->
|
||||
maybe_comment_done(Rest, Resume);
|
||||
comment(<<_/utf16-big, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
comment(<<>>, Resume) ->
|
||||
fun(Stream) -> comment(Stream, Resume) end.
|
||||
|
||||
|
||||
maybe_comment_done(<<?solidus/utf16-big, Rest/binary>>, Resume) ->
|
||||
Resume(Rest);
|
||||
maybe_comment_done(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment_done(Stream, Resume) end.
|
||||
|
||||
|
||||
%% helper function for dispatching of parser events
|
||||
|
||||
callback(eof, {none, Callbacks}) ->
|
||||
lists:reverse(Callbacks);
|
||||
callback(Event, {none, Callbacks}) ->
|
||||
{none, [Event] ++ Callbacks};
|
||||
callback(Event, {Mod, State}) when is_atom(Mod) ->
|
||||
{Mod, Mod:jsx_event(Event, State)};
|
||||
callback(Event, {F, State}) when is_function(F) ->
|
||||
{F, F(Event, State)}.
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
436
src/jsx_utf16l.erl
Normal file
436
src/jsx_utf16l.erl
Normal file
|
|
@ -0,0 +1,436 @@
|
|||
-module(jsx_utf16l).
|
||||
|
||||
-export([start/4]).
|
||||
|
||||
-include("jsx_common.hrl").
|
||||
|
||||
|
||||
%% this code is mostly autogenerated and mostly ugly. apologies. for more insight on
|
||||
%% Callbacks or Opts, see the comments accompanying decoder/2 (in jsx.erl). Stack
|
||||
%% is a stack of flags used to track depth and to keep track of whether we are
|
||||
%% returning from a value or a key inside objects. all pops, peeks and pushes are
|
||||
%% inlined. the code that handles naked values and comments is not optimized by the
|
||||
%% compiler for efficient matching, but you shouldn't be using naked values or comments
|
||||
%% anyways, they are horrible and contrary to the spec.
|
||||
|
||||
start(<<?start_object/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
start(<<?start_array/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
start(<<?quote/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
start(<<$t/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
start(<<$f/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
start(<<$n/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
start(<<?negative/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
start(<<?zero/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
start(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S), Opts#opts.naked_values == true ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
start(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end);
|
||||
start(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
start(Rest, Stack, Callbacks, Opts);
|
||||
start(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> start(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
maybe_done(<<?end_object/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
|
||||
maybe_done(<<?end_array/utf16-little, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
|
||||
maybe_done(<<?comma/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
|
||||
key(Rest, [key|Stack], Callbacks, Opts);
|
||||
maybe_done(<<?comma/utf16-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts) ->
|
||||
value(Rest, Stack, Callbacks, Opts);
|
||||
maybe_done(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> maybe_done(Resume, Stack, Callbacks, Opts) end);
|
||||
maybe_done(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, Callbacks, Opts);
|
||||
maybe_done(<<>>, [], Callbacks, _Opts) ->
|
||||
callback(eof, Callbacks);
|
||||
maybe_done(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> maybe_done(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
object(<<?end_object/utf16-little, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
|
||||
object(<<?quote/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
object(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end);
|
||||
object(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
object(Rest, Stack, Callbacks, Opts);
|
||||
object(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> object(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
array(<<?quote/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
array(<<?start_object/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
array(<<?start_array/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
array(<<?end_array/utf16-little, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
|
||||
array(<<$t/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
array(<<$f/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
array(<<$n/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
array(<<?negative/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
array(<<?zero/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
array(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
array(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end);
|
||||
array(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
array(Rest, Stack, Callbacks, Opts);
|
||||
array(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> array(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
value(<<?quote/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
value(<<?start_object/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
value(<<?start_array/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
value(<<$t/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
value(<<$f/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
value(<<$n/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
value(<<?negative/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
value(<<?zero/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
value(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
value(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end);
|
||||
value(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
value(Rest, Stack, Callbacks, Opts);
|
||||
value(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> value(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
colon(<<?colon/utf16-little, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
|
||||
value(Rest, [object|Stack], Callbacks, Opts);
|
||||
colon(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end);
|
||||
colon(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
colon(Rest, Stack, Callbacks, Opts);
|
||||
colon(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> colon(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
key(<<?quote/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
key(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end);
|
||||
key(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
key(Rest, Stack, Callbacks, Opts);
|
||||
key(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> key(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% string has an additional parameter, an accumulator (Acc) used to hold the intermediate
|
||||
%% representation of the string being parsed. using a list of integers representing
|
||||
%% unicode codepoints is faster than constructing binaries, many of which will be
|
||||
%% converted back to lists by the user anyways.
|
||||
|
||||
string(<<?quote/utf16-little, Rest/binary>>, [key|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
colon(Rest, Stack, callback({key, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
string(<<?quote/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback({string, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
string(<<?rsolidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
escape(Rest, Stack, Callbacks, Opts, Acc);
|
||||
string(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_noncontrol(S) ->
|
||||
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
string(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> string(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
%% only thing to note here is the additional accumulator passed to escaped_unicode used
|
||||
%% to hold the codepoint sequence. unescessary, but nicer than using the string
|
||||
%% accumulator.
|
||||
|
||||
escape(<<"b"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\b" ++ Acc);
|
||||
escape(<<"f"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\f" ++ Acc);
|
||||
escape(<<"n"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\n" ++ Acc);
|
||||
escape(<<"r"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\r" ++ Acc);
|
||||
escape(<<"t"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\t" ++ Acc);
|
||||
escape(<<"u"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
escaped_unicode(Rest, Stack, Callbacks, Opts, Acc, []);
|
||||
escape(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc)
|
||||
when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus ->
|
||||
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
escape(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> escape(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
%% this code is ugly and unfortunate, but so is json's handling of escaped unicode
|
||||
%% codepoint sequences. if the ascii option is present, the sequence is converted
|
||||
%% to a codepoint and inserted into the string if it represents an ascii value. if
|
||||
%% the codepoint option is present the sequence is converted and inserted as long
|
||||
%% as it represents a valid 16 bit integer value (this is where json's spec gets
|
||||
%% insane). any other option and the sequence is converted back to an erlang string
|
||||
%% and appended to the string in place.
|
||||
|
||||
escaped_unicode(<<D/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, String, [C, B, A]) ->
|
||||
X = erlang:list_to_integer([A, B, C, D], 16),
|
||||
case Opts#opts.escaped_unicode of
|
||||
ascii when X < 16#0080 ->
|
||||
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
|
||||
; codepoint ->
|
||||
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
|
||||
; _ ->
|
||||
string(Rest, Stack, Callbacks, Opts, [?rsolidus, $u, A, B, C, D] ++ String)
|
||||
end;
|
||||
escaped_unicode(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) ->
|
||||
escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc);
|
||||
escaped_unicode(<<>>, Stack, Callbacks, Opts, String, Acc) ->
|
||||
fun(Stream) -> escaped_unicode(Stream, Stack, Callbacks, Opts, String, Acc) end.
|
||||
|
||||
|
||||
%% like strings, numbers are collected in an intermediate accumulator before
|
||||
%% being emitted to the callback handler. no processing of numbers is done in
|
||||
%% process, it's left for the user, though there are convenience functions to
|
||||
%% convert them into erlang floats/integers in jsx_utils.erl.
|
||||
|
||||
%% TODO: actually write that jsx_utils.erl module mentioned above...
|
||||
|
||||
negative(<<"0"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0" ++ Acc);
|
||||
negative(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
negative(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> negative(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
zero(<<?end_object/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
zero(<<?end_array/utf16-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
zero(<<?comma/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?comma/utf16-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?decimalpoint/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
|
||||
zero(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> zero(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
zero(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
zero(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
integer(<<?end_object/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
integer(<<?end_array/utf16-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
integer(<<?comma/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?comma/utf16-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?decimalpoint/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
|
||||
integer(<<?zero/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
integer(<<"e"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
integer(<<"E"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
integer(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
integer(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> integer(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
integer(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
integer(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
fraction(<<?end_object/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
fraction(<<?end_array/utf16-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
fraction(<<?comma/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?comma/utf16-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?zero/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
fraction(<<"e"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<"E"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
fraction(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?solidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> fraction(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
fraction(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
fraction(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
e(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
|
||||
ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> e(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
ex(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
ex(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> ex(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
exp(<<?end_object/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?end_array/utf16-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?comma/utf16-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?comma/utf16-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?zero/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
exp(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
exp(<<S/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?rsolidus/utf16-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> exp(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
exp(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
exp(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
tr(<<"r"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tru(Rest, Stack, Callbacks, Opts);
|
||||
tr(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tr(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
tru(<<"u"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
true(Rest, Stack, Callbacks, Opts);
|
||||
tru(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tru(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
true(<<"e"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, true}, Callbacks), Opts);
|
||||
true(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> true(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fa(<<"a"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fal(Rest, Stack, Callbacks, Opts);
|
||||
fa(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fa(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fal(<<"l"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fals(Rest, Stack, Callbacks, Opts);
|
||||
fal(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fal(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fals(<<"s"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
false(Rest, Stack, Callbacks, Opts);
|
||||
fals(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fals(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
false(<<"e"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, false}, Callbacks), Opts);
|
||||
false(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> false(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nu(<<"u"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nul(Rest, Stack, Callbacks, Opts);
|
||||
nu(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nu(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nul(<<"l"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
null(Rest, Stack, Callbacks, Opts);
|
||||
nul(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nul(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
null(<<"l"/utf16-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, null}, Callbacks), Opts);
|
||||
null(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> null(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% comments are c style, /* blah blah */ and are STRONGLY discouraged. any unicode
|
||||
%% character is valid in a comment, except, obviously the */ sequence which ends
|
||||
%% the comment. they're implemented as a closure called when the comment ends that
|
||||
%% returns execution to the point where the comment began. comments are not
|
||||
%% recorded in any way, simply parsed.
|
||||
|
||||
maybe_comment(<<?star/utf16-little, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
maybe_comment(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment(Stream, Resume) end.
|
||||
|
||||
|
||||
comment(<<?star/utf16-little, Rest/binary>>, Resume) ->
|
||||
maybe_comment_done(Rest, Resume);
|
||||
comment(<<_/utf16-little, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
comment(<<>>, Resume) ->
|
||||
fun(Stream) -> comment(Stream, Resume) end.
|
||||
|
||||
|
||||
maybe_comment_done(<<?solidus/utf16-little, Rest/binary>>, Resume) ->
|
||||
Resume(Rest);
|
||||
maybe_comment_done(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment_done(Stream, Resume) end.
|
||||
|
||||
|
||||
%% helper function for dispatching of parser events
|
||||
|
||||
callback(eof, {none, Callbacks}) ->
|
||||
lists:reverse(Callbacks);
|
||||
callback(Event, {none, Callbacks}) ->
|
||||
{none, [Event] ++ Callbacks};
|
||||
callback(Event, {Mod, State}) when is_atom(Mod) ->
|
||||
{Mod, Mod:jsx_event(Event, State)};
|
||||
callback(Event, {F, State}) when is_function(F) ->
|
||||
{F, F(Event, State)}.
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
436
src/jsx_utf32b.erl
Normal file
436
src/jsx_utf32b.erl
Normal file
|
|
@ -0,0 +1,436 @@
|
|||
-module(jsx_utf32b).
|
||||
|
||||
-export([start/4]).
|
||||
|
||||
-include("jsx_common.hrl").
|
||||
|
||||
|
||||
%% this code is mostly autogenerated and mostly ugly. apologies. for more insight on
|
||||
%% Callbacks or Opts, see the comments accompanying decoder/2 (in jsx.erl). Stack
|
||||
%% is a stack of flags used to track depth and to keep track of whether we are
|
||||
%% returning from a value or a key inside objects. all pops, peeks and pushes are
|
||||
%% inlined. the code that handles naked values and comments is not optimized by the
|
||||
%% compiler for efficient matching, but you shouldn't be using naked values or comments
|
||||
%% anyways, they are horrible and contrary to the spec.
|
||||
|
||||
start(<<?start_object/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
start(<<?start_array/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
start(<<?quote/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
start(<<$t/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
start(<<$f/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
start(<<$n/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
start(<<?negative/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
start(<<?zero/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
start(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S), Opts#opts.naked_values == true ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
start(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end);
|
||||
start(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
start(Rest, Stack, Callbacks, Opts);
|
||||
start(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> start(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
maybe_done(<<?end_object/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
|
||||
maybe_done(<<?end_array/utf32-big, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
|
||||
maybe_done(<<?comma/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
|
||||
key(Rest, [key|Stack], Callbacks, Opts);
|
||||
maybe_done(<<?comma/utf32-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts) ->
|
||||
value(Rest, Stack, Callbacks, Opts);
|
||||
maybe_done(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> maybe_done(Resume, Stack, Callbacks, Opts) end);
|
||||
maybe_done(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, Callbacks, Opts);
|
||||
maybe_done(<<>>, [], Callbacks, _Opts) ->
|
||||
callback(eof, Callbacks);
|
||||
maybe_done(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> maybe_done(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
object(<<?end_object/utf32-big, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
|
||||
object(<<?quote/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
object(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end);
|
||||
object(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
object(Rest, Stack, Callbacks, Opts);
|
||||
object(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> object(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
array(<<?quote/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
array(<<?start_object/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
array(<<?start_array/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
array(<<?end_array/utf32-big, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
|
||||
array(<<$t/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
array(<<$f/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
array(<<$n/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
array(<<?negative/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
array(<<?zero/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
array(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
array(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end);
|
||||
array(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
array(Rest, Stack, Callbacks, Opts);
|
||||
array(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> array(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
value(<<?quote/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
value(<<?start_object/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
value(<<?start_array/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
value(<<$t/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
value(<<$f/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
value(<<$n/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
value(<<?negative/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
value(<<?zero/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
value(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
value(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end);
|
||||
value(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
value(Rest, Stack, Callbacks, Opts);
|
||||
value(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> value(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
colon(<<?colon/utf32-big, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
|
||||
value(Rest, [object|Stack], Callbacks, Opts);
|
||||
colon(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end);
|
||||
colon(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
colon(Rest, Stack, Callbacks, Opts);
|
||||
colon(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> colon(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
key(<<?quote/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
key(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end);
|
||||
key(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
key(Rest, Stack, Callbacks, Opts);
|
||||
key(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> key(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% string has an additional parameter, an accumulator (Acc) used to hold the intermediate
|
||||
%% representation of the string being parsed. using a list of integers representing
|
||||
%% unicode codepoints is faster than constructing binaries, many of which will be
|
||||
%% converted back to lists by the user anyways.
|
||||
|
||||
string(<<?quote/utf32-big, Rest/binary>>, [key|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
colon(Rest, Stack, callback({key, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
string(<<?quote/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback({string, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
string(<<?rsolidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
escape(Rest, Stack, Callbacks, Opts, Acc);
|
||||
string(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_noncontrol(S) ->
|
||||
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
string(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> string(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
%% only thing to note here is the additional accumulator passed to escaped_unicode used
|
||||
%% to hold the codepoint sequence. unescessary, but nicer than using the string
|
||||
%% accumulator.
|
||||
|
||||
escape(<<"b"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\b" ++ Acc);
|
||||
escape(<<"f"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\f" ++ Acc);
|
||||
escape(<<"n"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\n" ++ Acc);
|
||||
escape(<<"r"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\r" ++ Acc);
|
||||
escape(<<"t"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\t" ++ Acc);
|
||||
escape(<<"u"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
escaped_unicode(Rest, Stack, Callbacks, Opts, Acc, []);
|
||||
escape(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc)
|
||||
when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus ->
|
||||
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
escape(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> escape(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
%% this code is ugly and unfortunate, but so is json's handling of escaped unicode
|
||||
%% codepoint sequences. if the ascii option is present, the sequence is converted
|
||||
%% to a codepoint and inserted into the string if it represents an ascii value. if
|
||||
%% the codepoint option is present the sequence is converted and inserted as long
|
||||
%% as it represents a valid 16 bit integer value (this is where json's spec gets
|
||||
%% insane). any other option and the sequence is converted back to an erlang string
|
||||
%% and appended to the string in place.
|
||||
|
||||
escaped_unicode(<<D/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, String, [C, B, A]) ->
|
||||
X = erlang:list_to_integer([A, B, C, D], 16),
|
||||
case Opts#opts.escaped_unicode of
|
||||
ascii when X < 16#0080 ->
|
||||
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
|
||||
; codepoint ->
|
||||
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
|
||||
; _ ->
|
||||
string(Rest, Stack, Callbacks, Opts, [?rsolidus, $u, A, B, C, D] ++ String)
|
||||
end;
|
||||
escaped_unicode(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) ->
|
||||
escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc);
|
||||
escaped_unicode(<<>>, Stack, Callbacks, Opts, String, Acc) ->
|
||||
fun(Stream) -> escaped_unicode(Stream, Stack, Callbacks, Opts, String, Acc) end.
|
||||
|
||||
|
||||
%% like strings, numbers are collected in an intermediate accumulator before
|
||||
%% being emitted to the callback handler. no processing of numbers is done in
|
||||
%% process, it's left for the user, though there are convenience functions to
|
||||
%% convert them into erlang floats/integers in jsx_utils.erl.
|
||||
|
||||
%% TODO: actually write that jsx_utils.erl module mentioned above...
|
||||
|
||||
negative(<<"0"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0" ++ Acc);
|
||||
negative(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
negative(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> negative(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
zero(<<?end_object/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
zero(<<?end_array/utf32-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
zero(<<?comma/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?comma/utf32-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?decimalpoint/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
|
||||
zero(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> zero(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
zero(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
zero(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
integer(<<?end_object/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
integer(<<?end_array/utf32-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
integer(<<?comma/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?comma/utf32-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?decimalpoint/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
|
||||
integer(<<?zero/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
integer(<<"e"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
integer(<<"E"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
integer(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
integer(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> integer(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
integer(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
integer(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
fraction(<<?end_object/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
fraction(<<?end_array/utf32-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
fraction(<<?comma/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?comma/utf32-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?zero/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
fraction(<<"e"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<"E"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
fraction(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?solidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> fraction(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
fraction(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
fraction(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
e(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
|
||||
ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> e(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
ex(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
ex(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> ex(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
exp(<<?end_object/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?end_array/utf32-big, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?comma/utf32-big, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?comma/utf32-big, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?zero/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
exp(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
exp(<<S/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?rsolidus/utf32-big, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> exp(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
exp(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
exp(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
tr(<<"r"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tru(Rest, Stack, Callbacks, Opts);
|
||||
tr(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tr(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
tru(<<"u"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
true(Rest, Stack, Callbacks, Opts);
|
||||
tru(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tru(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
true(<<"e"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, true}, Callbacks), Opts);
|
||||
true(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> true(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fa(<<"a"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fal(Rest, Stack, Callbacks, Opts);
|
||||
fa(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fa(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fal(<<"l"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fals(Rest, Stack, Callbacks, Opts);
|
||||
fal(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fal(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fals(<<"s"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
false(Rest, Stack, Callbacks, Opts);
|
||||
fals(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fals(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
false(<<"e"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, false}, Callbacks), Opts);
|
||||
false(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> false(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nu(<<"u"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nul(Rest, Stack, Callbacks, Opts);
|
||||
nu(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nu(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nul(<<"l"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
null(Rest, Stack, Callbacks, Opts);
|
||||
nul(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nul(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
null(<<"l"/utf32-big, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, null}, Callbacks), Opts);
|
||||
null(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> null(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% comments are c style, /* blah blah */ and are STRONGLY discouraged. any unicode
|
||||
%% character is valid in a comment, except, obviously the */ sequence which ends
|
||||
%% the comment. they're implemented as a closure called when the comment ends that
|
||||
%% returns execution to the point where the comment began. comments are not
|
||||
%% recorded in any way, simply parsed.
|
||||
|
||||
maybe_comment(<<?star/utf32-big, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
maybe_comment(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment(Stream, Resume) end.
|
||||
|
||||
|
||||
comment(<<?star/utf32-big, Rest/binary>>, Resume) ->
|
||||
maybe_comment_done(Rest, Resume);
|
||||
comment(<<_/utf32-big, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
comment(<<>>, Resume) ->
|
||||
fun(Stream) -> comment(Stream, Resume) end.
|
||||
|
||||
|
||||
maybe_comment_done(<<?solidus/utf32-big, Rest/binary>>, Resume) ->
|
||||
Resume(Rest);
|
||||
maybe_comment_done(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment_done(Stream, Resume) end.
|
||||
|
||||
|
||||
%% helper function for dispatching of parser events
|
||||
|
||||
callback(eof, {none, Callbacks}) ->
|
||||
lists:reverse(Callbacks);
|
||||
callback(Event, {none, Callbacks}) ->
|
||||
{none, [Event] ++ Callbacks};
|
||||
callback(Event, {Mod, State}) when is_atom(Mod) ->
|
||||
{Mod, Mod:jsx_event(Event, State)};
|
||||
callback(Event, {F, State}) when is_function(F) ->
|
||||
{F, F(Event, State)}.
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
436
src/jsx_utf32l.erl
Normal file
436
src/jsx_utf32l.erl
Normal file
|
|
@ -0,0 +1,436 @@
|
|||
-module(jsx_utf32l).
|
||||
|
||||
-export([start/4]).
|
||||
|
||||
-include("jsx_common.hrl").
|
||||
|
||||
|
||||
%% this code is mostly autogenerated and mostly ugly. apologies. for more insight on
|
||||
%% Callbacks or Opts, see the comments accompanying decoder/2 (in jsx.erl). Stack
|
||||
%% is a stack of flags used to track depth and to keep track of whether we are
|
||||
%% returning from a value or a key inside objects. all pops, peeks and pushes are
|
||||
%% inlined. the code that handles naked values and comments is not optimized by the
|
||||
%% compiler for efficient matching, but you shouldn't be using naked values or comments
|
||||
%% anyways, they are horrible and contrary to the spec.
|
||||
|
||||
start(<<?start_object/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
start(<<?start_array/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
start(<<?quote/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
start(<<$t/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
start(<<$f/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
start(<<$n/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
start(<<?negative/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
start(<<?zero/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.naked_values == true ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
start(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S), Opts#opts.naked_values == true ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
start(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> start(Resume, Stack, Callbacks, Opts) end);
|
||||
start(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
start(Rest, Stack, Callbacks, Opts);
|
||||
start(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> start(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
maybe_done(<<?end_object/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
|
||||
maybe_done(<<?end_array/utf32-little, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
|
||||
maybe_done(<<?comma/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts) ->
|
||||
key(Rest, [key|Stack], Callbacks, Opts);
|
||||
maybe_done(<<?comma/utf32-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts) ->
|
||||
value(Rest, Stack, Callbacks, Opts);
|
||||
maybe_done(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> maybe_done(Resume, Stack, Callbacks, Opts) end);
|
||||
maybe_done(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, Callbacks, Opts);
|
||||
maybe_done(<<>>, [], Callbacks, _Opts) ->
|
||||
callback(eof, Callbacks);
|
||||
maybe_done(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> maybe_done(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
object(<<?end_object/utf32-little, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, Callbacks), Opts);
|
||||
object(<<?quote/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
object(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> object(Resume, Stack, Callbacks, Opts) end);
|
||||
object(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
object(Rest, Stack, Callbacks, Opts);
|
||||
object(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> object(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
array(<<?quote/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
array(<<?start_object/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
array(<<?start_array/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
array(<<?end_array/utf32-little, Rest/binary>>, [array|Stack], Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, Callbacks), Opts);
|
||||
array(<<$t/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
array(<<$f/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
array(<<$n/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
array(<<?negative/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
array(<<?zero/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
array(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
array(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> array(Resume, Stack, Callbacks, Opts) end);
|
||||
array(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
array(Rest, Stack, Callbacks, Opts);
|
||||
array(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> array(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
value(<<?quote/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
value(<<?start_object/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
object(Rest, [key|Stack], callback(start_object, Callbacks), Opts);
|
||||
value(<<?start_array/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
array(Rest, [array|Stack], callback(start_array, Callbacks), Opts);
|
||||
value(<<$t/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tr(Rest, Stack, Callbacks, Opts);
|
||||
value(<<$f/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fa(Rest, Stack, Callbacks, Opts);
|
||||
value(<<$n/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nu(Rest, Stack, Callbacks, Opts);
|
||||
value(<<?negative/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
negative(Rest, Stack, Callbacks, Opts, "-");
|
||||
value(<<?zero/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0");
|
||||
value(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S]);
|
||||
value(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> value(Resume, Stack, Callbacks, Opts) end);
|
||||
value(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
value(Rest, Stack, Callbacks, Opts);
|
||||
value(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> value(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
colon(<<?colon/utf32-little, Rest/binary>>, [key|Stack], Callbacks, Opts) ->
|
||||
value(Rest, [object|Stack], Callbacks, Opts);
|
||||
colon(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> colon(Resume, Stack, Callbacks, Opts) end);
|
||||
colon(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
colon(Rest, Stack, Callbacks, Opts);
|
||||
colon(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> colon(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
key(<<?quote/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
string(Rest, Stack, Callbacks, Opts, []);
|
||||
key(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> key(Resume, Stack, Callbacks, Opts) end);
|
||||
key(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) when ?is_whitespace(S) ->
|
||||
key(Rest, Stack, Callbacks, Opts);
|
||||
key(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> key(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% string has an additional parameter, an accumulator (Acc) used to hold the intermediate
|
||||
%% representation of the string being parsed. using a list of integers representing
|
||||
%% unicode codepoints is faster than constructing binaries, many of which will be
|
||||
%% converted back to lists by the user anyways.
|
||||
|
||||
string(<<?quote/utf32-little, Rest/binary>>, [key|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
colon(Rest, Stack, callback({key, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
string(<<?quote/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback({string, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
string(<<?rsolidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
escape(Rest, Stack, Callbacks, Opts, Acc);
|
||||
string(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_noncontrol(S) ->
|
||||
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
string(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> string(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
%% only thing to note here is the additional accumulator passed to escaped_unicode used
|
||||
%% to hold the codepoint sequence. unescessary, but nicer than using the string
|
||||
%% accumulator.
|
||||
|
||||
escape(<<"b"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\b" ++ Acc);
|
||||
escape(<<"f"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\f" ++ Acc);
|
||||
escape(<<"n"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\n" ++ Acc);
|
||||
escape(<<"r"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\r" ++ Acc);
|
||||
escape(<<"t"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
string(Rest, Stack, Callbacks, Opts, "\t" ++ Acc);
|
||||
escape(<<"u"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
escaped_unicode(Rest, Stack, Callbacks, Opts, Acc, []);
|
||||
escape(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc)
|
||||
when S =:= ?quote; S =:= ?solidus; S =:= ?rsolidus ->
|
||||
string(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
escape(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> escape(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
%% this code is ugly and unfortunate, but so is json's handling of escaped unicode
|
||||
%% codepoint sequences. if the ascii option is present, the sequence is converted
|
||||
%% to a codepoint and inserted into the string if it represents an ascii value. if
|
||||
%% the codepoint option is present the sequence is converted and inserted as long
|
||||
%% as it represents a valid 16 bit integer value (this is where json's spec gets
|
||||
%% insane). any other option and the sequence is converted back to an erlang string
|
||||
%% and appended to the string in place.
|
||||
|
||||
escaped_unicode(<<D/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, String, [C, B, A]) ->
|
||||
X = erlang:list_to_integer([A, B, C, D], 16),
|
||||
case Opts#opts.escaped_unicode of
|
||||
ascii when X < 16#0080 ->
|
||||
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
|
||||
; codepoint ->
|
||||
string(Rest, Stack, Callbacks, Opts, [X] ++ String)
|
||||
; _ ->
|
||||
string(Rest, Stack, Callbacks, Opts, [?rsolidus, $u, A, B, C, D] ++ String)
|
||||
end;
|
||||
escaped_unicode(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, String, Acc) when ?is_hex(S) ->
|
||||
escaped_unicode(Rest, Stack, Callbacks, Opts, String, [S] ++ Acc);
|
||||
escaped_unicode(<<>>, Stack, Callbacks, Opts, String, Acc) ->
|
||||
fun(Stream) -> escaped_unicode(Stream, Stack, Callbacks, Opts, String, Acc) end.
|
||||
|
||||
|
||||
%% like strings, numbers are collected in an intermediate accumulator before
|
||||
%% being emitted to the callback handler. no processing of numbers is done in
|
||||
%% process, it's left for the user, though there are convenience functions to
|
||||
%% convert them into erlang floats/integers in jsx_utils.erl.
|
||||
|
||||
%% TODO: actually write that jsx_utils.erl module mentioned above...
|
||||
|
||||
negative(<<"0"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
zero(Rest, Stack, Callbacks, Opts, "0" ++ Acc);
|
||||
negative(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
negative(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> negative(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
zero(<<?end_object/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
zero(<<?end_array/utf32-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
zero(<<?comma/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?comma/utf32-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?decimalpoint/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
|
||||
zero(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
zero(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> zero(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
zero(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
zero(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> zero(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
integer(<<?end_object/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
integer(<<?end_array/utf32-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
integer(<<?comma/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?comma/utf32-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?decimalpoint/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?decimalpoint] ++ Acc);
|
||||
integer(<<?zero/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
integer(<<"e"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
integer(<<"E"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
integer(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
integer(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
integer(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
integer(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> integer(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
integer(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
integer(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> integer(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
fraction(<<?end_object/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
fraction(<<?end_array/utf32-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
fraction(<<?comma/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?comma/utf32-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?zero/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
fraction(<<"e"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<"E"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
e(Rest, Stack, Callbacks, Opts, "e" ++ Acc);
|
||||
fraction(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
fraction(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
fraction(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
fraction(<<?solidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> fraction(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
fraction(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
fraction(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> fraction(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
e(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?positive; S =:= ?negative ->
|
||||
ex(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
e(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> e(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
ex(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when S =:= ?zero; ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
ex(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> ex(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
exp(<<?end_object/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_object, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?end_array/utf32-little, Rest/binary>>, [array|Stack], Callbacks, Opts, Acc) ->
|
||||
maybe_done(Rest, Stack, callback(end_array, callback({number, lists:reverse(Acc)}, Callbacks)), Opts);
|
||||
exp(<<?comma/utf32-little, Rest/binary>>, [object|Stack], Callbacks, Opts, Acc) ->
|
||||
key(Rest, [key|Stack], callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?comma/utf32-little, Rest/binary>>, [array|_] = Stack, Callbacks, Opts, Acc) ->
|
||||
value(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?zero/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [?zero] ++ Acc);
|
||||
exp(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_nonzero(S) ->
|
||||
exp(Rest, Stack, Callbacks, Opts, [S] ++ Acc);
|
||||
exp(<<S/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when ?is_whitespace(S) ->
|
||||
maybe_done(Rest, Stack, callback({number, lists:reverse(Acc)}, Callbacks), Opts);
|
||||
exp(<<?rsolidus/utf32-little, Rest/binary>>, Stack, Callbacks, Opts, Acc) when Opts#opts.comments == true ->
|
||||
maybe_comment(Rest, fun(Resume) -> exp(Resume, Stack, Callbacks, Opts, Acc) end);
|
||||
exp(<<>>, [], Callbacks, _Opts, Acc) ->
|
||||
callback(eof, callback({number, lists:reverse(Acc)}, Callbacks));
|
||||
exp(<<>>, Stack, Callbacks, Opts, Acc) ->
|
||||
fun(Stream) -> exp(Stream, Stack, Callbacks, Opts, Acc) end.
|
||||
|
||||
|
||||
tr(<<"r"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
tru(Rest, Stack, Callbacks, Opts);
|
||||
tr(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tr(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
tru(<<"u"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
true(Rest, Stack, Callbacks, Opts);
|
||||
tru(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> tru(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
true(<<"e"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, true}, Callbacks), Opts);
|
||||
true(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> true(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fa(<<"a"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fal(Rest, Stack, Callbacks, Opts);
|
||||
fa(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fa(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fal(<<"l"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
fals(Rest, Stack, Callbacks, Opts);
|
||||
fal(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fal(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
fals(<<"s"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
false(Rest, Stack, Callbacks, Opts);
|
||||
fals(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> fals(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
false(<<"e"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, false}, Callbacks), Opts);
|
||||
false(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> false(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nu(<<"u"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
nul(Rest, Stack, Callbacks, Opts);
|
||||
nu(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nu(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
nul(<<"l"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
null(Rest, Stack, Callbacks, Opts);
|
||||
nul(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> nul(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
null(<<"l"/utf32-little, Rest/binary>>, Stack, Callbacks, Opts) ->
|
||||
maybe_done(Rest, Stack, callback({literal, null}, Callbacks), Opts);
|
||||
null(<<>>, Stack, Callbacks, Opts) ->
|
||||
fun(Stream) -> null(Stream, Stack, Callbacks, Opts) end.
|
||||
|
||||
|
||||
%% comments are c style, /* blah blah */ and are STRONGLY discouraged. any unicode
|
||||
%% character is valid in a comment, except, obviously the */ sequence which ends
|
||||
%% the comment. they're implemented as a closure called when the comment ends that
|
||||
%% returns execution to the point where the comment began. comments are not
|
||||
%% recorded in any way, simply parsed.
|
||||
|
||||
maybe_comment(<<?star/utf32-little, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
maybe_comment(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment(Stream, Resume) end.
|
||||
|
||||
|
||||
comment(<<?star/utf32-little, Rest/binary>>, Resume) ->
|
||||
maybe_comment_done(Rest, Resume);
|
||||
comment(<<_/utf32-little, Rest/binary>>, Resume) ->
|
||||
comment(Rest, Resume);
|
||||
comment(<<>>, Resume) ->
|
||||
fun(Stream) -> comment(Stream, Resume) end.
|
||||
|
||||
|
||||
maybe_comment_done(<<?solidus/utf32-little, Rest/binary>>, Resume) ->
|
||||
Resume(Rest);
|
||||
maybe_comment_done(<<>>, Resume) ->
|
||||
fun(Stream) -> maybe_comment_done(Stream, Resume) end.
|
||||
|
||||
|
||||
%% helper function for dispatching of parser events
|
||||
|
||||
callback(eof, {none, Callbacks}) ->
|
||||
lists:reverse(Callbacks);
|
||||
callback(Event, {none, Callbacks}) ->
|
||||
{none, [Event] ++ Callbacks};
|
||||
callback(Event, {Mod, State}) when is_atom(Mod) ->
|
||||
{Mod, Mod:jsx_event(Event, State)};
|
||||
callback(Event, {F, State}) when is_function(F) ->
|
||||
{F, F(Event, State)}.
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue