Bug fix in Objective-C method signature parsing.

examples/simple/nswrap.yaml

@@ -8,7 +8,7 @@ subclasses:
         ClassTwo:
             - geti1
             - -(void)myMethod1:(int)a
-            - +(const NSObject* _Nonnull)myMethod2:(int)a:(NSDictionary<NSString*,NSObject*> *)options
+            - +(const NSObject* _Nonnull)myMethod2:(int)a options:(NSDictionary<NSString*,NSObject*> *)opt
 
 imports: [ simple.h ]
 frameworks: [ Foundation ]

types/cparser.go

@@ -35,24 +35,24 @@ func init() {
 func MethodSignature(s string, n *Node) (string, *Node) {
 	return ChildOf(NewNode("MethodSignature"),Seq(
 		Parenthesized(TypeName),
-		MethodName,
+		Identifier,
 		Opt(MethodParameterList),
 	))(s,n)
 }
 
-func MethodName(s string, n *Node) (string, *Node) {
+func MethodParameterList(s string, n *Node) (string, *Node) {
 	return Seq(
-		Identifier,
-		Opt(Seq(
-			Lit(":"),
-			Parenthesized(TypeName),
-			Identifier,
-		)),
+		FirstMethodParameter,
+		ZeroOrMore(MethodParameter),
 	)(s,n)
 }
 
-func MethodParameterList(s string, n *Node) (string, *Node) {
-	return OneOrMore(MethodParameter)(s,n)
+func FirstMethodParameter(s string, n *Node) (string, *Node) {
+	return ChildOf(NewNode("MethodParameter"),Seq(
+		Lit(":"),
+		Parenthesized(TypeName),
+		Identifier,
+	))(s,n)
 }
 
 func MethodParameter(s string, n *Node) (string, *Node) {

types/main_test.go

@@ -396,9 +396,10 @@ func TestParse(t *testing.T) {
 -<TypeName> ''
 --<TypeSpecifier> 'void'
 -<Identifier> 'performSelector'
--<TypeName> ''
---<TypedefName> 'SEL'
--<Identifier> 'aSelector'
+-<MethodParameter> ''
+--<TypeName> ''
+---<TypedefName> 'SEL'
+--<Identifier> 'aSelector'
 -<MethodParameter> ''
 --<Identifier> 'target'
 --<TypeName> ''

wrap/main.go

@@ -1108,6 +1108,7 @@ func (w *Wrapper) MethodFromSig(sig,class string) *Method {
 		fmt.Printf("Failed to parse method signature %s (%s)\n",sig,rem)
 		os.Exit(-1)
 	}
+	i := 0 // count MethodParameters
 	for _,c := range n.Children {
 		switch c.Kind {
 		case "TypeName":
@@ -1124,9 +1125,14 @@ func (w *Wrapper) MethodFromSig(sig,class string) *Method {
 					tp := types.NewType(d,class)
 					p.Type = tp
 				case "Identifier":
-					p.Vname = d.Content
+					if i == 0 || p.Pname != "" {
+						p.Vname = d.Content
+					} else {
+						p.Pname = d.Content
+					}
 				}
 			}
+			i++
 			ret.Parameters = append(ret.Parameters,p)
 		}
 	}