Method _match

src/maths/Parser.js:152–159

(expected)

    }

    _match(expected) {
        const index = this.lexer.getIndex() - 1;
        if (this.text[index] === expected) {
            this.token = this.lexer.getNextToken(this.decimalCharacter);
        } else {
            throw new Error(`Unexpected token '${this.token.symbol}' at position '${index}' in the match function`);
        }
    }
}