Method constructor

g2all/900/psfree.js:309–313

(rstr, rstr_view)

class Reader {
    constructor(rstr, rstr_view) {
        this.rstr = rstr;
        this.rstr_view = rstr_view;
        this.m_data = rstr_view.read64(off.strimpl_m_data);
    }

    read8_at(offset) {
        const str = this.rstr;