Function DefaultDataProvider

libs/echarts/echarts.simple.js:23093–23125

* If normal array used, mutable chunk size is supported. * If typed array used, chunk size must be fixed.

(source, dimSize)

 * If typed array used, chunk size must be fixed.
 */
function DefaultDataProvider(source, dimSize) {
    if (!Source.isInstance(source)) {
        source = Source.seriesDataToSource(source);
    }
    this._source = source;

    var data = this._data = source.data;
    var sourceFormat = source.sourceFormat;

    // Typed array. TODO IE10+?
    if (sourceFormat === SOURCE_FORMAT_TYPED_ARRAY) {
        if (__DEV__) {
            if (dimSize == null) {
                throw new Error('Typed array data must specify dimension size');
            }
        }
        this._offset = 0;
        this._dimSize = dimSize;
        this._data = data;
    }

    var methods = providerMethods[
        sourceFormat === SOURCE_FORMAT_ARRAY_ROWS
        ? sourceFormat + '_' + source.seriesLayoutBy
        : sourceFormat
    ];

    if (__DEV__) {
        assert$1(methods, 'Invalide sourceFormat: ' + sourceFormat);
    }

    extend(this, methods);
}

var providerProto = DefaultDataProvider.prototype;
// If data is pure without style configuration