Update to tengo v2 (#976)

vendor/github.com/d5/tengo/v2/stdlib/os_process.go

@@ -0,0 +1,76 @@
+package stdlib
+
+import (
+	"os"
+	"syscall"
+
+	"github.com/d5/tengo/v2"
+)
+
+func makeOSProcessState(state *os.ProcessState) *tengo.ImmutableMap {
+	return &tengo.ImmutableMap{
+		Value: map[string]tengo.Object{
+			"exited": &tengo.UserFunction{
+				Name:  "exited",
+				Value: FuncARB(state.Exited),
+			},
+			"pid": &tengo.UserFunction{
+				Name:  "pid",
+				Value: FuncARI(state.Pid),
+			},
+			"string": &tengo.UserFunction{
+				Name:  "string",
+				Value: FuncARS(state.String),
+			},
+			"success": &tengo.UserFunction{
+				Name:  "success",
+				Value: FuncARB(state.Success),
+			},
+		},
+	}
+}
+
+func makeOSProcess(proc *os.Process) *tengo.ImmutableMap {
+	return &tengo.ImmutableMap{
+		Value: map[string]tengo.Object{
+			"kill": &tengo.UserFunction{
+				Name:  "kill",
+				Value: FuncARE(proc.Kill),
+			},
+			"release": &tengo.UserFunction{
+				Name:  "release",
+				Value: FuncARE(proc.Release),
+			},
+			"signal": &tengo.UserFunction{
+				Name: "signal",
+				Value: func(args ...tengo.Object) (tengo.Object, error) {
+					if len(args) != 1 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+					i1, ok := tengo.ToInt64(args[0])
+					if !ok {
+						return nil, tengo.ErrInvalidArgumentType{
+							Name:     "first",
+							Expected: "int(compatible)",
+							Found:    args[0].TypeName(),
+						}
+					}
+					return wrapError(proc.Signal(syscall.Signal(i1))), nil
+				},
+			},
+			"wait": &tengo.UserFunction{
+				Name: "wait",
+				Value: func(args ...tengo.Object) (tengo.Object, error) {
+					if len(args) != 0 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+					state, err := proc.Wait()
+					if err != nil {
+						return wrapError(err), nil
+					}
+					return makeOSProcessState(state), nil
+				},
+			},
+		},
+	}
+}