Turn up Bind/Seq count and write a simple Bind benchmark

bind.go

@@ -278,3 +278,421 @@ func Bind5[In, Out, T, T2, T3, T4, T5 any](
 		return Succeed(anyConsumed, val6, next, MessageOK(s.Pos())), nil
 	}
 }
+
+// Bind6 is equivalent to 6 nested calls to Bind.
+func Bind6[In, Out, T, T2, T3, T4, T5, T6 any](
+	p Parser[In, T],
+	f func(T) Parser[In, T2],
+	f2 func(T2) Parser[In, T3],
+	f3 func(T3) Parser[In, T4],
+	f4 func(T4) Parser[In, T5],
+	f5 func(T5) Parser[In, T6],
+	f6 func(T6) Parser[In, Out],
+) Parser[In, Out] {
+	return func(s State[In]) (Result[In, Out], error) {
+		var anyConsumed bool
+		var next = s
+
+		r, err := p(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r.Consumed()
+		success, val, next := r.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r.Message()), nil
+		}
+
+		r2, err := f(val)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r2.Consumed()
+		success, val2, next := r2.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r2.Message()), nil
+		}
+
+		r3, err := f2(val2)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r3.Consumed()
+		success, val3, next := r3.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r3.Message()), nil
+		}
+
+		r4, err := f3(val3)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r4.Consumed()
+		success, val4, next := r4.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r4.Message()), nil
+		}
+
+		r5, err := f4(val4)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r5.Consumed()
+		success, val5, next := r5.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r5.Message()), nil
+		}
+
+		r6, err := f5(val5)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r6.Consumed()
+		success, val6, next := r6.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r6.Message()), nil
+		}
+
+		r7, err := f6(val6)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r7.Consumed()
+		success, val7, next := r7.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r7.Message()), nil
+		}
+
+		return Succeed(anyConsumed, val7, next, MessageOK(s.Pos())), nil
+	}
+}
+
+// Bind7 is equivalent to 7 nested calls to Bind.
+func Bind7[In, Out, T, T2, T3, T4, T5, T6, T7 any](
+	p Parser[In, T],
+	f func(T) Parser[In, T2],
+	f2 func(T2) Parser[In, T3],
+	f3 func(T3) Parser[In, T4],
+	f4 func(T4) Parser[In, T5],
+	f5 func(T5) Parser[In, T6],
+	f6 func(T6) Parser[In, T7],
+	f7 func(T7) Parser[In, Out],
+) Parser[In, Out] {
+	return func(s State[In]) (Result[In, Out], error) {
+		var anyConsumed bool
+		var next = s
+
+		r, err := p(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r.Consumed()
+		success, val, next := r.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r.Message()), nil
+		}
+
+		r2, err := f(val)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r2.Consumed()
+		success, val2, next := r2.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r2.Message()), nil
+		}
+
+		r3, err := f2(val2)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r3.Consumed()
+		success, val3, next := r3.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r3.Message()), nil
+		}
+
+		r4, err := f3(val3)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r4.Consumed()
+		success, val4, next := r4.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r4.Message()), nil
+		}
+
+		r5, err := f4(val4)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r5.Consumed()
+		success, val5, next := r5.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r5.Message()), nil
+		}
+
+		r6, err := f5(val5)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r6.Consumed()
+		success, val6, next := r6.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r6.Message()), nil
+		}
+
+		r7, err := f6(val6)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r7.Consumed()
+		success, val7, next := r7.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r7.Message()), nil
+		}
+
+		r8, err := f7(val7)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r8.Consumed()
+		success, val8, next := r8.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r8.Message()), nil
+		}
+
+		return Succeed(anyConsumed, val8, next, MessageOK(s.Pos())), nil
+	}
+}
+
+// Bind8 is equivalent to 8 nested calls to Bind.
+func Bind8[In, Out, T, T2, T3, T4, T5, T6, T7, T8 any](
+	p Parser[In, T],
+	f func(T) Parser[In, T2],
+	f2 func(T2) Parser[In, T3],
+	f3 func(T3) Parser[In, T4],
+	f4 func(T4) Parser[In, T5],
+	f5 func(T5) Parser[In, T6],
+	f6 func(T6) Parser[In, T7],
+	f7 func(T7) Parser[In, T8],
+	f8 func(T8) Parser[In, Out],
+) Parser[In, Out] {
+	return func(s State[In]) (Result[In, Out], error) {
+		var anyConsumed bool
+		var next = s
+
+		r, err := p(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r.Consumed()
+		success, val, next := r.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r.Message()), nil
+		}
+
+		r2, err := f(val)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r2.Consumed()
+		success, val2, next := r2.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r2.Message()), nil
+		}
+
+		r3, err := f2(val2)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r3.Consumed()
+		success, val3, next := r3.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r3.Message()), nil
+		}
+
+		r4, err := f3(val3)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r4.Consumed()
+		success, val4, next := r4.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r4.Message()), nil
+		}
+
+		r5, err := f4(val4)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r5.Consumed()
+		success, val5, next := r5.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r5.Message()), nil
+		}
+
+		r6, err := f5(val5)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r6.Consumed()
+		success, val6, next := r6.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r6.Message()), nil
+		}
+
+		r7, err := f6(val6)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r7.Consumed()
+		success, val7, next := r7.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r7.Message()), nil
+		}
+
+		r8, err := f7(val7)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r8.Consumed()
+		success, val8, next := r8.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r8.Message()), nil
+		}
+
+		r9, err := f8(val8)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r9.Consumed()
+		success, val9, next := r9.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r9.Message()), nil
+		}
+
+		return Succeed(anyConsumed, val9, next, MessageOK(s.Pos())), nil
+	}
+}
+
+// Bind9 is equivalent to 9 nested calls to Bind.
+func Bind9[In, Out, T, T2, T3, T4, T5, T6, T7, T8, T9 any](
+	p Parser[In, T],
+	f func(T) Parser[In, T2],
+	f2 func(T2) Parser[In, T3],
+	f3 func(T3) Parser[In, T4],
+	f4 func(T4) Parser[In, T5],
+	f5 func(T5) Parser[In, T6],
+	f6 func(T6) Parser[In, T7],
+	f7 func(T7) Parser[In, T8],
+	f8 func(T8) Parser[In, T9],
+	f9 func(T9) Parser[In, Out],
+) Parser[In, Out] {
+	return func(s State[In]) (Result[In, Out], error) {
+		var anyConsumed bool
+		var next = s
+
+		r, err := p(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r.Consumed()
+		success, val, next := r.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r.Message()), nil
+		}
+
+		r2, err := f(val)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r2.Consumed()
+		success, val2, next := r2.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r2.Message()), nil
+		}
+
+		r3, err := f2(val2)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r3.Consumed()
+		success, val3, next := r3.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r3.Message()), nil
+		}
+
+		r4, err := f3(val3)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r4.Consumed()
+		success, val4, next := r4.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r4.Message()), nil
+		}
+
+		r5, err := f4(val4)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r5.Consumed()
+		success, val5, next := r5.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r5.Message()), nil
+		}
+
+		r6, err := f5(val5)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r6.Consumed()
+		success, val6, next := r6.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r6.Message()), nil
+		}
+
+		r7, err := f6(val6)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r7.Consumed()
+		success, val7, next := r7.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r7.Message()), nil
+		}
+
+		r8, err := f7(val7)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r8.Consumed()
+		success, val8, next := r8.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r8.Message()), nil
+		}
+
+		r9, err := f8(val8)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r9.Consumed()
+		success, val9, next := r9.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r9.Message()), nil
+		}
+
+		r10, err := f9(val9)(next)
+		if err != nil {
+			return Result[In, Out]{}, err
+		}
+		anyConsumed = anyConsumed || r10.Consumed()
+		success, val10, next := r10.Status()
+		if !success {
+			return Fail[In, Out](anyConsumed, r10.Message()), nil
+		}
+
+		return Succeed(anyConsumed, val10, next, MessageOK(s.Pos())), nil
+	}
+}