fix: method argument name collision (#57)

types/objc/type_encoding.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"regexp"
 	"strings"
-	"unicode"
 )
 
 // References:
@@ -145,6 +144,17 @@ func getLastCapitalizedPart(s string) string {
 	return strings.ToLower(s[start:])
 }
 
+func isReserved(s string) bool {
+	switch s {
+	case "alignas", "alignof", "auto", "bool", "break", "case", "char", "const", "constexpr", "continue", "default", "do", "double", "else", "enum", "extern", "false", "float", "for", "goto", "if", "inline", "int", "long", "nullptr", "register", "restrict", "return", "short", "signed", "sizeof", "static", "static_assert", "struct", "switch", "thread_local", "true", "typedef", "typeof", "typeof_unqual", "union", "unsigned", "void", "volatile", "while":
+		return true // C Keywords
+	case "and", "and_eq", "asm", "atomic_cancel", "atomic_commit", "atomic_noexcept", "bitand", "bitor", "catch", "char8_t", "char16_t", "char32_t", "class", "compl", "concept", "consteval", "constinit", "const_cast", "co_await", "co_return", "co_yield", "decltype", "delete", "dynamic_cast", "explicit", "export", "friend", "mutable", "namespace", "new", "noexcept", "not", "not_eq", "operator", "or", "or_eq", "private", "protected", "public", "reflexpr", "reinterpret_cast", "requires", "static_cast", "synchronized", "template", "this", "throw", "try", "typeid", "typename", "using", "virtual", "wchar_t", "xor", "xor_eq":
+		return true // C++ Keywords
+	default:
+		return false
+	}
+}
+
 func getMethodWithArgs(method, returnType string, args []string) string {
 	if len(args) <= 2 {
 		return fmt.Sprintf("(%s)%s;", returnType, method)
@@ -157,6 +167,9 @@ func getMethodWithArgs(method, returnType string, args []string) string {
 	if len(parts) > 1 { // method has arguments based on SEL having ':'
 		for idx, part := range parts {
 			argName := getLastCapitalizedPart(part)
+			if isReserved(argName) {
+				argName = "_" + argName
+			}
 			if len(part) == 0 || idx >= len(args) {
 				break
 			}