prog: add FieldName to Type

FieldName() is the name of the struct field or union option with this type.
TypeName() is now always the name of the type.

1 files changed, 6 insertions, 0 deletions

diff --git a/sys/decl.go b/sys/decl.go
index a495ffd4a..3c98d1038 100644
--- a/sys/decl.go
+++ b/sys/decl.go
@@ -29,6 +29,7 @@ const (
 
 type Type interface {
 	Name() string
+	FieldName() string
 	Dir() Dir
 	Optional() bool
 	Default() uintptr
@@ -49,6 +50,7 @@ func IsPad(t Type) bool {
 
 type TypeCommon struct {
 	TypeName   string
+	FldName    string // for struct fields and named args
 	ArgDir     Dir
 	IsOptional bool
 }
@@ -57,6 +59,10 @@ func (t *TypeCommon) Name() string {
 	return t.TypeName
 }
 
+func (t *TypeCommon) FieldName() string {
+	return t.FldName
+}
+
 func (t *TypeCommon) Optional() bool {
 	return t.IsOptional
 }