function isWhitespace(char) {
    // ' ', '\n', '\r', '\t'
    return char === 32 || char === 10 || char === 13 || char === 9;
}
function isNumber(char) {
    // 0123456789.-
    return (char >= 48 && char <= 57) || char === 46 || char === 45;
}
export function parseEngineData(data) {
    var index = 0;
    function skipWhitespace() {
        while (index < data.length && isWhitespace(data[index])) {
            index++;
        }
    }
    function getTextByte() {
        var byte = data[index];
        index++;
        if (byte === 92) { // \
            byte = data[index];
            index++;
        }
        return byte;
    }
    function getText() {
        var result = '';
        if (data[index] === 41) { // )
            index++;
            return result;
        }
        // Strings start with utf-16 BOM
        if (data[index] !== 0xFE || data[index + 1] !== 0xFF) {
            throw new Error('Invalid utf-16 BOM');
        }
        index += 2;
        // ), ( and \ characters are escaped in ascii manner, remove the escapes before interpreting
        // the bytes as utf-16
        while (index < data.length && data[index] !== 41) { // )
            var high = getTextByte();
            var low = getTextByte();
            var char = (high << 8) | low;
            result += String.fromCharCode(char);
        }
        index++;
        return result;
    }
    var root = null;
    var stack = [];
    function pushContainer(value) {
        if (!stack.length) {
            stack.push(value);
            root = value;
        }
        else {
            pushValue(value);
            stack.push(value);
        }
    }
    function pushValue(value) {
        if (!stack.length)
            throw new Error('Invalid data');
        var top = stack[stack.length - 1];
        if (typeof top === 'string') {
            stack[stack.length - 2][top] = value;
            pop();
        }
        else if (Array.isArray(top)) {
            top.push(value);
        }
        else {
            throw new Error('Invalid data');
        }
    }
    function pushProperty(name) {
        if (!stack.length)
            pushContainer({});
        var top = stack[stack.length - 1];
        if (top && typeof top === 'string') {
            if (name === 'nil') {
                pushValue(null);
            }
            else {
                pushValue("/".concat(name));
            }
        }
        else if (top && typeof top === 'object') {
            stack.push(name);
        }
        else {
            throw new Error('Invalid data');
        }
    }
    function pop() {
        if (!stack.length)
            throw new Error('Invalid data');
        stack.pop();
    }
    skipWhitespace();
    while (index < data.length) {
        var i = index;
        var char = data[i];
        if (char === 60 && data[i + 1] === 60) { // <<
            index += 2;
            pushContainer({});
        }
        else if (char === 62 && data[i + 1] === 62) { // >>
            index += 2;
            pop();
        }
        else if (char === 47) { // /
            index += 1;
            var start = index;
            while (index < data.length && !isWhitespace(data[index])) {
                index++;
            }
            var name_1 = '';
            for (var i_1 = start; i_1 < index; i_1++) {
                name_1 += String.fromCharCode(data[i_1]);
            }
            pushProperty(name_1);
        }
        else if (char === 40) { // (
            index += 1;
            pushValue(getText());
        }
        else if (char === 91) { // [
            index += 1;
            pushContainer([]);
        }
        else if (char === 93) { // ]
            index += 1;
            pop();
        }
        else if (char === 110 && data[i + 1] === 117 && data[i + 2] === 108 && data[i + 3] === 108) { // null
            index += 4;
            pushValue(null);
        }
        else if (char === 116 && data[i + 1] === 114 && data[i + 2] === 117 && data[i + 3] === 101) { // true
            index += 4;
            pushValue(true);
        }
        else if (char === 102 && data[i + 1] === 97 && data[i + 2] === 108 && data[i + 3] === 115 && data[i + 4] === 101) { // false
            index += 5;
            pushValue(false);
        }
        else if (isNumber(char)) {
            var value = '';
            while (index < data.length && isNumber(data[index])) {
                value += String.fromCharCode(data[index]);
                index++;
            }
            pushValue(parseFloat(value));
        }
        else {
            index += 1;
            console.log("Invalid token ".concat(String.fromCharCode(char), " at ").concat(index));
            // ` near ${String.fromCharCode.apply(null, data.slice(index - 10, index + 20) as any)}` +
            // `data [${Array.from(data.slice(index - 10, index + 20)).join(', ')}]`
        }
        skipWhitespace();
    }
    return root;
}
var floatKeys = [
    'Axis', 'XY', 'Zone', 'WordSpacing', 'FirstLineIndent', 'GlyphSpacing', 'StartIndent', 'EndIndent', 'SpaceBefore',
    'SpaceAfter', 'LetterSpacing', 'Values', 'GridSize', 'GridLeading', 'PointBase', 'BoxBounds', 'TransformPoint0', 'TransformPoint1',
    'TransformPoint2', 'FontSize', 'Leading', 'HorizontalScale', 'VerticalScale', 'BaselineShift', 'Tsume',
    'OutlineWidth', 'AutoLeading',
];
var intArrays = ['RunLengthArray'];
// TODO: handle /nil
export function serializeEngineData(data, condensed) {
    if (condensed === void 0) { condensed = false; }
    var buffer = new Uint8Array(1024);
    var offset = 0;
    var indent = 0;
    function write(value) {
        if (offset >= buffer.length) {
            var newBuffer = new Uint8Array(buffer.length * 2);
            newBuffer.set(buffer);
            buffer = newBuffer;
        }
        buffer[offset] = value;
        offset++;
    }
    function writeString(value) {
        for (var i = 0; i < value.length; i++) {
            write(value.charCodeAt(i));
        }
    }
    function writeIndent() {
        if (condensed) {
            writeString(' ');
        }
        else {
            for (var i = 0; i < indent; i++) {
                writeString('\t');
            }
        }
    }
    function writeProperty(key, value) {
        writeIndent();
        writeString("/".concat(key));
        writeValue(value, key, true);
        if (!condensed)
            writeString('\n');
    }
    function serializeInt(value) {
        return value.toString();
    }
    function serializeFloat(value) {
        return value.toFixed(5)
            .replace(/(\d)0+$/g, '$1')
            .replace(/^0+\.([1-9])/g, '.$1')
            .replace(/^-0+\.0(\d)/g, '-.0$1');
    }
    function serializeNumber(value, key) {
        var isFloat = (key && floatKeys.indexOf(key) !== -1) || (value | 0) !== value;
        return isFloat ? serializeFloat(value) : serializeInt(value);
    }
    function getKeys(value) {
        var keys = Object.keys(value);
        if (keys.indexOf('98') !== -1)
            keys.unshift.apply(keys, keys.splice(keys.indexOf('99'), 1));
        if (keys.indexOf('99') !== -1)
            keys.unshift.apply(keys, keys.splice(keys.indexOf('99'), 1));
        return keys;
    }
    function writeStringByte(value) {
        if (value === 40 || value === 41 || value === 92) { // ( ) \
            write(92); // \
        }
        write(value);
    }
    function writeValue(value, key, inProperty) {
        if (inProperty === void 0) { inProperty = false; }
        function writePrefix() {
            if (inProperty) {
                writeString(' ');
            }
            else {
                writeIndent();
            }
        }
        if (value === null) {
            writePrefix();
            writeString(condensed ? '/nil' : 'null');
        }
        else if (typeof value === 'number') {
            writePrefix();
            writeString(serializeNumber(value, key));
        }
        else if (typeof value === 'boolean') {
            writePrefix();
            writeString(value ? 'true' : 'false');
        }
        else if (typeof value === 'string') {
            writePrefix();
            if ((key === '99' || key === '98') && value.charAt(0) === '/') {
                writeString(value);
            }
            else {
                writeString('(');
                write(0xfe);
                write(0xff);
                for (var i = 0; i < value.length; i++) {
                    var code = value.charCodeAt(i);
                    writeStringByte((code >> 8) & 0xff);
                    writeStringByte(code & 0xff);
                }
                writeString(')');
            }
        }
        else if (Array.isArray(value)) {
            writePrefix();
            if (value.every(function (x) { return typeof x === 'number'; })) {
                writeString('[');
                var intArray = intArrays.indexOf(key) !== -1;
                for (var _i = 0, value_1 = value; _i < value_1.length; _i++) {
                    var x = value_1[_i];
                    writeString(' ');
                    writeString(intArray ? serializeNumber(x) : serializeFloat(x));
                }
                writeString(' ]');
            }
            else {
                writeString('[');
                if (!condensed)
                    writeString('\n');
                for (var _a = 0, value_2 = value; _a < value_2.length; _a++) {
                    var x = value_2[_a];
                    writeValue(x, key);
                    if (!condensed)
                        writeString('\n');
                }
                writeIndent();
                writeString(']');
            }
        }
        else if (typeof value === 'object') {
            if (inProperty && !condensed)
                writeString('\n');
            writeIndent();
            writeString('<<');
            if (!condensed)
                writeString('\n');
            indent++;
            for (var _b = 0, _c = getKeys(value); _b < _c.length; _b++) {
                var key_1 = _c[_b];
                writeProperty(key_1, value[key_1]);
            }
            indent--;
            writeIndent();
            writeString('>>');
        }
        return undefined;
    }
    if (condensed) {
        if (typeof data === 'object') {
            for (var _i = 0, _a = getKeys(data); _i < _a.length; _i++) {
                var key = _a[_i];
                writeProperty(key, data[key]);
            }
        }
    }
    else {
        writeString('\n\n');
        writeValue(data);
    }
    return buffer.slice(0, offset);
}
//# sourceMappingURL=engineData.js.map