gen_const: add ability to specify 'unsigned' enum tip

Author: mpontillo

generator/gen_const.go

@@ -69,6 +69,11 @@ func (gen *Generator) expandEnumAnonymous(wr io.Writer, decl *tl.CDecl, namesSee
 	spec := decl.Spec.(*tl.CEnumSpec)
 	if hasType {
 		enumType := gen.tr.TranslateSpec(&spec.Type)
+		if tips, ok := gen.tr.TypeTipRx(tl.TipScopeEnum, string(typeName)); ok {
+			if tips.HasTip(tl.TipTypeUnsigned) {
+				enumType.Unsigned = true
+			}
+		}
 		fmt.Fprintf(wr, "// %s as declared in %s\n", typeName,
 			filepath.ToSlash(gen.tr.SrcLocation(tl.TargetConst, decl.Name, decl.Position)))
 		fmt.Fprintf(wr, "type %s %s\n", typeName, enumType)
@@ -132,6 +137,11 @@ func (gen *Generator) expandEnum(wr io.Writer, decl *tl.CDecl, namesSeen map[str
 	spec := decl.Spec.(*tl.CEnumSpec)
 	tagName := gen.tr.TransformName(tl.TargetType, decl.Spec.GetBase())
 	enumType := gen.tr.TranslateSpec(&spec.Type)
+	if tips, ok := gen.tr.TypeTipRx(tl.TipScopeEnum, string(tagName)); ok {
+		if tips.HasTip(tl.TipTypeUnsigned) {
+			enumType.Unsigned = true
+		}
+	}
 	fmt.Fprintf(wr, "// %s as declared in %s\n", tagName,
 		filepath.ToSlash(gen.tr.SrcLocation(tl.TargetConst, decl.Name, decl.Position)))
 	fmt.Fprintf(wr, "type %s %s\n", tagName, enumType)

translator/rules.go

@@ -86,15 +86,16 @@ const (
 type Tip string
 
 const (
-	TipPtrSRef    Tip = "sref"
-	TipPtrRef     Tip = "ref"
-	TipPtrArr     Tip = "arr"
-	TipPtrInst    Tip = "inst"
-	TipMemRaw     Tip = "raw"
-	TipTypeNamed  Tip = "named"
-	TipTypePlain  Tip = "plain"
-	TipTypeString Tip = "string"
-	NoTip         Tip = ""
+	TipPtrSRef      Tip = "sref"
+	TipPtrRef       Tip = "ref"
+	TipPtrArr       Tip = "arr"
+	TipPtrInst      Tip = "inst"
+	TipMemRaw       Tip = "raw"
+	TipTypeNamed    Tip = "named"
+	TipTypePlain    Tip = "plain"
+	TipTypeString   Tip = "string"
+	TipTypeUnsigned Tip = "unsigned"
+	NoTip           Tip = ""
 )
 
 type TipKind string
@@ -110,7 +111,7 @@ func (t Tip) Kind() TipKind {
 	switch t {
 	case TipPtrArr, TipPtrRef, TipPtrSRef, TipPtrInst:
 		return TipKindPtr
-	case TipTypePlain, TipTypeNamed, TipTypeString:
+	case TipTypePlain, TipTypeNamed, TipTypeString, TipTypeUnsigned:
 		return TipKindType
 	case TipMemRaw:
 		return TipKindMem
@@ -127,6 +128,8 @@ func (t Tip) IsValid() bool {
 		return true
 	case TipMemRaw:
 		return true
+	case TipTypeUnsigned:
+		return true
 	default:
 		return false
 	}
@@ -145,6 +148,7 @@ const (
 	TipScopeAny      TipScope = "any"
 	TipScopeStruct   TipScope = "struct"
 	TipScopeType     TipScope = "type"
+	TipScopeEnum     TipScope = "enum"
 	TipScopeFunction TipScope = "function"
 )