all: introduce a prog.Call constructor

Create a constructor for the prog.Call type. It allows to reduce
the duplication of code now and during further changes.

3 files changed, 11 insertions, 9 deletions

diff --git a/prog/encoding.go b/prog/encoding.go
index b389fc10d..de0e324b1 100644
--- a/prog/encoding.go
+++ b/prog/encoding.go
@@ -263,11 +263,8 @@ func (p *parser) parseProg() (*Prog, error) {
 		if meta == nil {
 			return nil, fmt.Errorf("unknown syscall %v", name)
 		}
-		c := &Call{
-			Meta:    meta,
-			Ret:     MakeReturnArg(meta.Ret),
-			Comment: p.comment,
-		}
+		c := MakeCall(meta, nil)
+		c.Comment = p.comment
 		prog.Calls = append(prog.Calls, c)
 		p.Parse('(')
 		for i := 0; p.Char() != ')'; i++ {
diff --git a/prog/prog.go b/prog/prog.go
index bcc86fb02..576348085 100644
--- a/prog/prog.go
+++ b/prog/prog.go
@@ -20,6 +20,14 @@ type Call struct {
 	Comment string
 }
 
+func MakeCall(meta *Syscall, args []Arg) *Call {
+	return &Call{
+		Meta: meta,
+		Args: args,
+		Ret:  MakeReturnArg(meta.Ret),
+	}
+}
+
 type Arg interface {
 	Type() Type
 	Dir() Dir
diff --git a/prog/rand.go b/prog/rand.go
index 7ab5068cb..f36cb0822 100644
--- a/prog/rand.go
+++ b/prog/rand.go
@@ -551,10 +551,7 @@ func (r *randGen) generateParticularCall(s *state, meta *Syscall) (calls []*Call
 	if meta.Attrs.Disabled {
 		panic(fmt.Sprintf("generating disabled call %v", meta.Name))
 	}
-	c := &Call{
-		Meta: meta,
-		Ret:  MakeReturnArg(meta.Ret),
-	}
+	c := MakeCall(meta, nil)
 	c.Args, calls = r.generateArgs(s, meta.Args, DirIn)
 	r.target.assignSizesCall(c)
 	return append(calls, c)