gofmt-ify 4s, iterable

R=rsc
http://go/go-review/1016055

src/pkg/exp/4s/4s.go

@@ -32,7 +32,7 @@ func main() {
 		p = pieces5;
 	}
 	dx, dy := 500, 500;
-	w, err := av.Init(av.SubsystemVideo|av.SubsystemAudio, dx, dy);
+	w, err := av.Init(av.SubsystemVideo | av.SubsystemAudio, dx, dy);
 	if err != nil {
 		log.Exit(err);
 	}
@@ -55,7 +55,7 @@ func audioServer() {
 		b := <-sndc;
 		for len(b)*2 >= n {
 			var a []uint16;
-			a, b = b[0:n/2], b[n/2:len(b)];
+			a, b = b[0 : n/2], b[n/2 : len(b)];
 			n, err = av.AudioStream(a);
 			if err != nil {
 				log.Exit(err);
@@ -74,6 +74,6 @@ func PlaySound(b []uint16) {
 	sndc <- b;
 }
 
-var whoosh = []uint16 {
-	// Insert your favorite sound samples here.
+var whoosh = []uint16{
+// Insert your favorite sound samples here.
 }

src/pkg/exp/iterable/iterable.go

@@ -12,77 +12,77 @@ import "container/vector"
 
 type Iterable interface {
 	// Iter should return a fresh channel each time it is called.
-	Iter() <-chan interface {}
+	Iter() <-chan interface{};
 }
 
-func not(f func(interface {}) bool) (func(interface {}) bool) {
-	return func(e interface {}) bool { return !f(e) }
+func not(f func(interface{}) bool) (func(interface{}) bool) {
+	return func(e interface{}) bool { return !f(e) };
 }
 
 // All tests whether f is true for every element of iter.
-func All(iter Iterable, f func(interface {}) bool) bool {
+func All(iter Iterable, f func(interface{}) bool) bool {
 	for e := range iter.Iter() {
 		if !f(e) {
-			return false
+			return false;
 		}
 	}
-	return true
+	return true;
 }
 
 // Any tests whether f is true for at least one element of iter.
-func Any(iter Iterable, f func(interface {}) bool) bool {
-	return !All(iter, not(f))
+func Any(iter Iterable, f func(interface{}) bool) bool {
+	return !All(iter, not(f));
 }
 
 // Data returns a slice containing the elements of iter.
-func Data(iter Iterable) []interface {} {
+func Data(iter Iterable) []interface{} {
 	vec := vector.New(0);
 	for e := range iter.Iter() {
-		vec.Push(e)
+		vec.Push(e);
 	}
-	return vec.Data()
+	return vec.Data();
 }
 
 // filteredIterable is a struct that implements Iterable with each element
 // passed through a filter.
 type filteredIterable struct {
 	it	Iterable;
-	f func(interface {}) bool;
+	f	func(interface{}) bool;
 }
 
-func (f *filteredIterable) iterate(out chan<- interface {}) {
+func (f *filteredIterable) iterate(out chan<- interface{}) {
 	for e := range f.it.Iter() {
 		if f.f(e) {
-			out <- e
+			out <- e;
 		}
 	}
-	close(out)
+	close(out);
 }
 
-func (f *filteredIterable) Iter() <-chan interface {} {
-	ch := make(chan interface {});
+func (f *filteredIterable) Iter() <-chan interface{} {
+	ch := make(chan interface{});
 	go f.iterate(ch);
 	return ch;
 }
 
 // Filter returns an Iterable that returns the elements of iter that satisfy f.
-func Filter(iter Iterable, f func(interface {}) bool) Iterable {
-	return &filteredIterable{ iter, f }
+func Filter(iter Iterable, f func(interface{}) bool) Iterable {
+	return &filteredIterable{iter, f};
 }
 
 // Find returns the first element of iter that satisfies f.
 // Returns nil if no such element is found.
-func Find(iter Iterable, f func(interface {}) bool) interface {} {
+func Find(iter Iterable, f func(interface{}) bool) interface{} {
 	for e := range Filter(iter, f).Iter() {
-		return e
+		return e;
 	}
-	return nil
+	return nil;
 }
 
 // Injector is a type representing a function that takes two arguments,
 // an accumulated value and an element, and returns the next accumulated value.
 // See the Inject function.
-type Injector func(interface {}, interface {}) interface{};
+type Injector func(interface{}, interface{}) interface{}
 
 // Inject combines the elements of iter by repeatedly calling f with an
 // accumulated value and each element in order. The starting accumulated value
@@ -92,42 +92,42 @@ type Injector func(interface {}, interface {}) interface{};
 //   sum := iterable.Inject(arr, 0,
 //                          func(ax interface {}, x interface {}) interface {} {
 //                            return ax.(int) + x.(int) }).(int)
-func Inject(iter Iterable, initial interface {}, f Injector) interface {} {
+func Inject(iter Iterable, initial interface{}, f Injector) interface{} {
 	acc := initial;
 	for e := range iter.Iter() {
-		acc = f(acc, e)
+		acc = f(acc, e);
 	}
-	return acc
+	return acc;
 }
 
 // mappedIterable is a helper struct that implements Iterable, returned by Map.
 type mappedIterable struct {
 	it	Iterable;
-	f func(interface {}) interface {};
+	f	func(interface{}) interface{};
 }
 
-func (m *mappedIterable) iterate(out chan<- interface {}) {
+func (m *mappedIterable) iterate(out chan<- interface{}) {
 	for e := range m.it.Iter() {
-		out <- m.f(e)
+		out <- m.f(e);
 	}
-	close(out)
+	close(out);
 }
 
-func (m *mappedIterable) Iter() <-chan interface {} {
-	ch := make(chan interface {});
+func (m *mappedIterable) Iter() <-chan interface{} {
+	ch := make(chan interface{});
 	go m.iterate(ch);
-	return ch
+	return ch;
 }
 
 // Map returns an Iterable that returns the result of applying f to each
 // element of iter.
-func Map(iter Iterable, f func(interface {}) interface {}) Iterable {
-	return &mappedIterable{ iter, f }
+func Map(iter Iterable, f func(interface{}) interface{}) Iterable {
+	return &mappedIterable{iter, f};
 }
 
 // Partition(iter, f) returns Filter(iter, f) and Filter(iter, !f).
-func Partition(iter Iterable, f func(interface {}) bool) (Iterable, Iterable)  {
-	return Filter(iter, f), Filter(iter, not(f))
+func Partition(iter Iterable, f func(interface{}) bool) (Iterable, Iterable) {
+	return Filter(iter, f), Filter(iter, not(f));
 }
 
 // TODO:

src/pkg/exp/iterable/iterable_test.go

@@ -8,82 +8,83 @@ import (
 	"testing";
 )
 
-type IntArray []int;
+type IntArray []int
 
-func (arr IntArray) Iter() <-chan interface {} {
-	ch := make(chan interface {});
+func (arr IntArray) Iter() <-chan interface{} {
+	ch := make(chan interface{});
 	go func() {
 		for _, x := range arr {
-			ch <- x
+			ch <- x;
 		}
-		close(ch)
+		close(ch);
 	}();
-	return ch
+	return ch;
 }
 
-var oneToFive = IntArray{ 1, 2, 3, 4, 5 };
+var oneToFive = IntArray{1, 2, 3, 4, 5}
 
-func isNegative(n interface {}) bool {
-	return n.(int) < 0
+func isNegative(n interface{}) bool {
+	return n.(int) < 0;
 }
-func isPositive(n interface {}) bool {
-	return n.(int) > 0
+func isPositive(n interface{}) bool {
+	return n.(int) > 0;
 }
-func isAbove3(n interface {}) bool {
-	return n.(int) > 3
+func isAbove3(n interface{}) bool {
+	return n.(int) > 3;
 }
-func isEven(n interface {}) bool {
-	return n.(int) % 2 == 0
+func isEven(n interface{}) bool {
+	return n.(int) % 2 == 0;
 }
-func doubler(n interface {}) interface {} {
-	return n.(int) * 2
+func doubler(n interface{}) interface{} {
+	return n.(int) * 2;
 }
-func addOne(n interface {}) interface {} {
-	return n.(int) + 1
+func addOne(n interface{}) interface{} {
+	return n.(int) + 1;
 }
-func adder(acc interface {}, n interface {}) interface {} {
-	return acc.(int) + n.(int)
+func adder(acc interface{}, n interface{}) interface{} {
+	return acc.(int) + n.(int);
 }
 
 // A stream of the natural numbers: 0, 1, 2, 3, ...
-type integerStream struct {}
-func (i integerStream) Iter() <-chan interface {} {
-  ch := make(chan interface {});
+type integerStream struct{}
+
+func (i integerStream) Iter() <-chan interface{} {
+	ch := make(chan interface{});
 	go func() {
 		for i := 0; ; i++ {
-      ch <- i
+			ch <- i;
 		}
 	}();
-  return ch
+	return ch;
 }
 
 func TestAll(t *testing.T) {
 	if !All(oneToFive, isPositive) {
-		t.Error("All(oneToFive, isPositive) == false")
+		t.Error("All(oneToFive, isPositive) == false");
 	}
 	if All(oneToFive, isAbove3) {
-		t.Error("All(oneToFive, isAbove3) == true")
+		t.Error("All(oneToFive, isAbove3) == true");
 	}
 }
 
 func TestAny(t *testing.T) {
 	if Any(oneToFive, isNegative) {
-		t.Error("Any(oneToFive, isNegative) == true")
+		t.Error("Any(oneToFive, isNegative) == true");
 	}
 	if !Any(oneToFive, isEven) {
-		t.Error("Any(oneToFive, isEven) == false")
+		t.Error("Any(oneToFive, isEven) == false");
 	}
 }
 
-func assertArraysAreEqual(t *testing.T, res []interface {}, expected []int) {
+func assertArraysAreEqual(t *testing.T, res []interface{}, expected []int) {
 	if len(res) != len(expected) {
 		t.Errorf("len(res) = %v, want %v", len(res), len(expected));
-		goto missing
+		goto missing;
 	}
 	for i := range res {
 		if v := res[i].(int); v != expected[i] {
 			t.Errorf("res[%v] = %v, want %v", i, v, expected[i]);
-			goto missing
+			goto missing;
 		}
 	}
 	return;
@@ -94,35 +95,35 @@ missing:
 func TestFilter(t *testing.T) {
 	ints := integerStream{};
 	moreInts := Filter(ints, isAbove3).Iter();
-	res := make([]interface {}, 3);
+	res := make([]interface{}, 3);
 	for i := 0; i < 3; i++ {
 		res[i] = <-moreInts;
 	}
-	assertArraysAreEqual(t, res, []int{ 4, 5, 6 })
+	assertArraysAreEqual(t, res, []int{4, 5, 6});
 }
 
 func TestFind(t *testing.T) {
 	ints := integerStream{};
 	first := Find(ints, isAbove3);
 	if first.(int) != 4 {
-		t.Errorf("Find(ints, isAbove3) = %v, want 4", first)
+		t.Errorf("Find(ints, isAbove3) = %v, want 4", first);
 	}
 }
 
 func TestInject(t *testing.T) {
 	res := Inject(oneToFive, 0, adder);
 	if res.(int) != 15 {
-		t.Errorf("Inject(oneToFive, 0, adder) = %v, want 15", res)
+		t.Errorf("Inject(oneToFive, 0, adder) = %v, want 15", res);
 	}
 }
 
 func TestMap(t *testing.T) {
 	res := Data(Map(Map(oneToFive, doubler), addOne));
-	assertArraysAreEqual(t, res, []int{ 3, 5, 7, 9, 11 })
+	assertArraysAreEqual(t, res, []int{3, 5, 7, 9, 11});
 }
 
 func TestPartition(t *testing.T) {
 	ti, fi := Partition(oneToFive, isEven);
-	assertArraysAreEqual(t, Data(ti), []int{ 2, 4 });
-	assertArraysAreEqual(t, Data(fi), []int{ 1, 3, 5 })
+	assertArraysAreEqual(t, Data(ti), []int{2, 4});
+	assertArraysAreEqual(t, Data(fi), []int{1, 3, 5});
 }