naive slice-encoding functionality

lib/emit.go

@@ -66,6 +66,8 @@ func typeEncoder(t reflect.Type) encodeFn {
 		return encodeString
 	case reflect.Struct:
 		return encodeStruct
+	case reflect.Slice:
+		return encodeSlice
 	default:
 		panic(fmt.Errorf("unhandled type: %v kind: %v", t, t.Kind()))
 	}
@@ -142,3 +144,14 @@ func encodeString(e *encoder, v reflect.Value) {
 	}
 	e.WriteByte('"')
 }
+
+func encodeSlice(e *encoder, v reflect.Value) {
+	e.WriteByte('[')
+	for i := 0; i < v.Len(); i++ {
+		if i > 0 {
+			e.WriteByte(' ')
+		}
+		e.encodeValue(v.Index(i))
+	}
+	e.WriteByte(']')
+}

lib/emit_test.go

@@ -29,6 +29,10 @@ var valueTests = []struct {
 	{"a string", `"a string"`},
 	{`it's got "quotes"`, `"it's got \"quotes\""`},
 	{person{"jordan", 28}, `{Name: "jordan" Age: 28}`},
+	{[]int{1, 2, 3}, `[1 2 3]`},
+	{[]float32{1.0, 2.2, 3.3}, `[1.0 2.2 3.3]`},
+	{[]float64{1.0, 2.2, 3.3}, `[1.0 2.2 3.3]`},
+	{[]string{"one", "two", "three"}, `["one" "two" "three"]`},
 }
 
 func TestWriteValues(t *testing.T) {