fix: array decoding (#60)

types/objc/type_encoding.go

@@ -366,17 +366,21 @@ func decodeType(encType string) string {
 }
 
 func decodeArray(arrayType string) string {
-	numIdx := strings.LastIndexAny(arrayType, "0123456789")
-	if len(arrayType) == 1 {
-		return fmt.Sprintf("x[%s]", arrayType)
+	typIdx := 0
+	for _, c := range arrayType {
+		if c < '0' || c > '9' {
+			break
+		}
+
+		typIdx++
 	}
 
-	decType := decodeType(arrayType[numIdx+1:])
+	decType := decodeType(arrayType[typIdx:])
 	if !strings.HasSuffix(decType, "*") {
 		decType += " "
 	}
 
-	return fmt.Sprintf("%sx[%s]", decType, arrayType[:numIdx+1])
+	return fmt.Sprintf("%sx[%s]", decType, arrayType[:typIdx])
 }
 
 func decodeStructure(structure string) string {

types/objc/type_encoding_test.go

@@ -19,12 +19,19 @@ func Test_decodeType(t *testing.T) {
 			want: "struct OutterStruct { union InnerUnion { long long x0; struct InnerStruct { int x0; int x1; } x1; } x0; unsigned int x1:1; unsigned int x2:2; unsigned int x3:10; unsigned int x4:1; long long x5; void *x6[2]; signed char *x7 __attribute__((aligned(8), vector_size(4))); _Atomic unsigned long long x8; } *",
 		},
 		{
-			name: "Test array",
+			name: "Test array 0",
 			args: args{
 				encType: "[2^v]",
 			},
 			want: "void *x[2]",
 		},
+		{
+			name: "Test array 1",
+			args: args{
+				encType: "[20{IDSGlobalLinkAttribute=\"type\"S\"len\"S\"value\"(?=\"ss\"{sockaddr_storage=\"ss_len\"C\"ss_family\"C\"__ss_pad1\"[6c]\"__ss_align\"q\"__ss_pad2\"[112c]}\"u16\"S\"u32\"I\"u64\"Q\"binaryData\"{IDSGLAttrBinaryData_=\"len\"i\"data\"[1024C]})}]",
+			},
+			want: "struct IDSGlobalLinkAttribute { unsigned short type; unsigned short len; union { struct sockaddr_storage { unsigned char ss_len; unsigned char ss_family; signed char __ss_pad1[6]; long long __ss_align; signed char __ss_pad2[112]; } ss; unsigned short u16; unsigned int u32; unsigned long long u64; struct IDSGLAttrBinaryData_ { int len; unsigned char data[1024]; } binaryData; } value; } x[20]",
+		},
 		{
 			name: "Test bitfield",
 			args: args{