Method scanNumber

src/parser.js:391–431

(isFloat)

  }

  scanNumber(isFloat) {
    if (isFloat) {
      this.val = 0;
    } else {
      this.val = this.ch - /*0*/0x30;
      while (this.next() <= /*9*/0x39 && this.ch >= /*0*/0x30) {
        this.val = this.val * 10 + this.ch  - /*0*/0x30;
      }
    }

    if (isFloat || this.ch === /*.*/0x2E) {
      // isFloat (coming from the period scanner) means the period was already skipped
      if (!isFloat) {
        this.next();
      }
      const start = this.idx;
      let value = this.ch - /*0*/0x30;
      while (this.next() <= /*9*/0x39 && this.ch >= /*0*/0x30) {
        value = value * 10 + this.ch  - /*0*/0x30;
      }
      this.val = this.val + value / 10 ** (this.idx - start);
    }

    if (this.ch === /*e*/0x65 || this.ch === /*E*/0x45) {
      const start = this.idx;

      this.next();
      if (this.ch === /*-*/0x2D || this.ch === /*+*/0x2B) {
        this.next();
      }

      if (!(this.ch >= /*0*/0x30 && this.ch <= /*9*/0x39)) {
        this.idx = start;
        this.err('Invalid exponent');
      }
      while (this.next() <= /*9*/0x39 && this.ch >= /*0*/0x30) { } // eslint-disable-line no-empty
      this.val = parseFloat(this.src.slice(this.start, this.idx));
    }

    return T$NumericLiteral;
  }

  scanString() {
    let quote = this.ch;