Method throw

func.go:1004–1033

(v Value)

}

func (g *generatorObject) throw(v Value) Value {
	g.validate()
	if g.state == genStateSuspendedStart {
		g.state = genStateCompleted
	}
	if g.state == genStateCompleted {
		panic(v)
	}
	if d := g.delegated; d != nil {
		res, done := g.tryCallDelegated(func() (Value, bool) {
			method := toMethod(g.delegated.iterator.self.getStr("throw", nil))
			if method != nil {
				return g.callDelegated(method, v)
			}
			g.delegated = nil
			d.returnIter()
			panic(g.val.runtime.NewTypeError("The iterator does not provide a 'throw' method"))
		})
		if !done {
			return res
		}
		if g.state != genStateSuspendedYieldRes {
			res = nil
		}
		g.state = genStateExecuting
		return g.step(g.gen.next(res))
	}
	g.state = genStateExecuting
	return g.step(g.gen.nextThrow(v))
}

func (g *generatorObject) _return(v Value) Value {
	g.validate()