all: apply Go 1.18's gofmt -s

This adds the missing go:build lines as per the transition away from the
"// +build" build tag syntax, and applies two "-s" simplifications.

Note that we avoid applying -s to cmd/cue/cmd/interfaces_gen.go,
as that file is generated and we're not updating the generator here.

Change-Id: I29ed06a4b102a5101baa12a455a0bb4c524c46ef
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/536095
Unity-Result: CUEcueckoo <cueckoo@cuelang.org>
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Reviewed-by: Marcel van Lohuizen <mpvl@gmail.com>

cue/parser/fuzz.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build gofuzz
 // +build gofuzz
 
 package parser

cue/scanner/fuzz.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build gofuzz
 // +build gofuzz
 
 package scanner

encoding/gocode/gen_test.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !gen
 // +build !gen
 
 package gocode

internal/cuetest/long.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build long
 // +build long
 
 package cuetest

internal/cuetest/nolong.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !long
 // +build !long
 
 package cuetest

internal/encoding/json/encode_test.go

@@ -254,7 +254,7 @@ f4: {
 func TestEncodeAST(t *testing.T) {
 	comment := func(s string) *ast.CommentGroup {
 		return &ast.CommentGroup{List: []*ast.Comment{
-			&ast.Comment{Text: "// " + s},
+			{Text: "// " + s},
 		}}
 	}
 	testCases := []struct {

internal/encoding/yaml/encode_test.go

@@ -265,7 +265,7 @@ route:
 func TestEncodeAST(t *testing.T) {
 	comment := func(s string) *ast.CommentGroup {
 		return &ast.CommentGroup{List: []*ast.Comment{
-			&ast.Comment{Text: "// " + s},
+			{Text: "// " + s},
 		}}
 	}
 	testCases := []struct {

internal/filetypes/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

pkg/tool/cli/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

pkg/tool/exec/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

pkg/tool/file/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

pkg/tool/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

pkg/tool/http/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

pkg/tool/os/gen.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build ignore
 // +build ignore
 
 package main

tools.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build tools
 // +build tools
 
 package tools

tools/flow/flow_test.go

@@ -169,7 +169,7 @@ func taskFunc(v cue.Value) (flow.Runner, error) {
 
 	case "list":
 		return flow.RunnerFunc(func(t *flow.Task) error {
-			t.Fill(map[string][]int{"out": []int{1, 2}})
+			t.Fill(map[string][]int{"out": {1, 2}})
 			return nil
 		}), nil