blob: f312b06fb672b0806f51ecd942840f25cac78cda [file] [log] [blame]
var Flatted = (function (Primitive, primitive) {
/*!
* ISC License
*
* Copyright (c) 2018, Andrea Giammarchi, @WebReflection
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
var Flatted = {
parse: function parse(text, reviver) {
var input = JSON.parse(text, Primitives).map(primitives);
var value = input[0];
var $ = reviver || noop;
var tmp = typeof value === 'object' && value ?
revive(input, new Set, value, $) :
value;
return $.call({'': tmp}, '', tmp);
},
stringify: function stringify(value, replacer, space) {
for (var
firstRun,
known = new Map,
input = [],
output = [],
$ = replacer && typeof replacer === typeof input ?
function (k, v) {
if (k === '' || -1 < replacer.indexOf(k)) return v;
} :
(replacer || noop),
i = +set(known, input, $.call({'': value}, '', value)),
replace = function (key, value) {
if (firstRun) {
firstRun = !firstRun;
return value;
// this was invoking twice each root object
// return i < 1 ? value : $.call(this, key, value);
}
var after = $.call(this, key, value);
switch (typeof after) {
case 'object':
if (after === null) return after;
case primitive:
return known.get(after) || set(known, input, after);
}
return after;
};
i < input.length; i++
) {
firstRun = true;
output[i] = JSON.stringify(input[i], replace, space);
}
return '[' + output.join(',') + ']';
}
};
return Flatted;
function noop(key, value) {
return value;
}
function revive(input, parsed, output, $) {
return Object.keys(output).reduce(
function (output, key) {
var value = output[key];
if (value instanceof Primitive) {
var tmp = input[value];
if (typeof tmp === 'object' && !parsed.has(tmp)) {
parsed.add(tmp);
output[key] = $.call(output, key, revive(input, parsed, tmp, $));
} else {
output[key] = $.call(output, key, tmp);
}
} else
output[key] = $.call(output, key, value);
return output;
},
output
);
}
function set(known, input, value) {
var index = Primitive(input.push(value) - 1);
known.set(value, index);
return index;
}
// the two kinds of primitives
// 1. the real one
// 2. the wrapped one
function primitives(value) {
return value instanceof Primitive ? Primitive(value) : value;
}
function Primitives(key, value) {
return typeof value === primitive ? new Primitive(value) : value;
}
}(String, 'string'));
module.exports = Flatted;