Method parseSwitchStatement

src/parser.ts:2471–2503

()

    }

    parseSwitchStatement(): Node.SwitchStatement {
        const node = this.createNode();
        this.expectKeyword('switch');

        this.expect('(');
        const discriminant = this.parseExpression();
        this.expect(')');

        const previousInSwitch = this.context.inSwitch;
        this.context.inSwitch = true;

        const cases: Node.SwitchCase[] = [];
        let defaultFound = false;
        this.expect('{');
        while (true) {
            if (this.match('}')) {
                break;
            }
            const clause = this.parseSwitchCase();
            if (clause.test === null) {
                if (defaultFound) {
                    this.throwError(Messages.MultipleDefaultsInSwitch);
                }
                defaultFound = true;
            }
            cases.push(clause);
        }
        this.expect('}');

        this.context.inSwitch = previousInSwitch;

        return this.finalize(node, new Node.SwitchStatement(discriminant, cases));
    }

    // https://tc39.github.io/ecma262/#sec-labelled-statements