compiler: implement custom logic for go1.15

For some reason `foo.go` is interpreted as an http URL, and even if we
replace it with `./foo.go` there is an errors with file missing on disk.
Because `CompileWithOptions` should be able to compile file under any
circumstances, we allocate temporary directory base on version used to
compile a binary.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>

examples/engine/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/engine
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/events/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/events
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/iterator/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/iterator
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/nft-nd-nns/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/nft-nd-nns
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652 // indirect

examples/nft-nd/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/nft-nd
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/oracle/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/oracle
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/runtime/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/runtime
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/storage/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/storage
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/timer/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/timer
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/token-sale/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/token-sale
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

examples/token/go.mod

@@ -1,5 +1,5 @@
 module github.com/nspcc-dev/neo-go/examples/token
 
-go 1.15
+go 1.16
 
 require github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20220118080652-4eddfdbbc652

pkg/compiler/compiler.go

@@ -12,6 +12,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
@@ -157,7 +158,17 @@ func getBuildInfo(name string, src interface{}) (*buildInfo, error) {
 		default:
 			panic(fmt.Sprintf("unsupported src type: %T", s))
 		}
-		names = append(names, name)
+		if strings.HasPrefix(runtime.Version(), "go1.15") {
+			dir, err = ioutil.TempDir("", "*")
+			if err != nil {
+				return nil, err
+			}
+			name = filepath.Join(dir, filepath.Base(name))
+			absName = name
+			names = append(names, "file="+name)
+		} else {
+			names = append(names, name)
+		}
 		conf.Overlay[absName] = buf
 	} else {
 		if strings.HasSuffix(name, ".go") {

pkg/compiler/debug_test.go

@@ -303,7 +303,8 @@ func TestSequencePoints(t *testing.T) {
 	require.NoError(t, err)
 	require.NotNil(t, d)
 
-	require.Equal(t, d.Documents, []string{"foo.go"})
+	require.Equal(t, 1, len(d.Documents))
+	require.True(t, strings.HasSuffix(d.Documents[0], "foo.go"))
 
 	// Main func has 2 return on 4-th and 6-th lines.
 	ps := d.Methods[0].SeqPoints

pkg/interop/go.mod

@@ -1,3 +1,3 @@
 module github.com/nspcc-dev/neo-go/pkg/interop
 
-go 1.15
+go 1.16

pkg/vm/cli/cli_test.go

@@ -209,7 +209,7 @@ func TestLoad(t *testing.T) {
 		require.NoError(t, ioutil.WriteFile(filenameErr, []byte(src+"invalid_token"), os.ModePerm))
 		filenameErr = "'" + filenameErr + "'"
 		goMod := []byte(`module test.example/vmcli
-go 1.15`)
+go 1.16`)
 		require.NoError(t, ioutil.WriteFile(filepath.Join(tmpDir, "go.mod"), goMod, os.ModePerm))
 
 		e := newTestVMCLI(t)
@@ -242,7 +242,7 @@ require (
 	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0
 )
 replace github.com/nspcc-dev/neo-go/pkg/interop => ` + filepath.Join(wd, "../../interop") + `
-go 1.15`)
+go 1.16`)
 		require.NoError(t, ioutil.WriteFile(filepath.Join(tmpDir, "go.mod"), goMod, os.ModePerm))
 
 		e := newTestVMCLI(t)