[ox/std] Add String::operator=(const String&)

(synced from e0a2676d54)

src/ox/std/string.cpp

@@ -24,12 +24,6 @@ String::String(const char *str) noexcept {
 	*this = str;
 }
 
-const String &String::operator=(int64_t i) noexcept {
-	char str[65] = {};
-	ox_itoa(i, str);
-	return this->operator=(str);
-}
-
 const String &String::operator=(const char *str) noexcept {
 	std::size_t strLen = ox_strlen(str) + 1;
 	m_buff.resize(strLen + 1);
@@ -43,6 +37,16 @@ const String &String::operator=(char *str) noexcept {
 	return *this = static_cast<const char*>(str);
 }
 
+const String &String::operator=(int64_t i) noexcept {
+	char str[65] = {};
+	ox_itoa(i, str);
+	return this->operator=(str);
+}
+
+const String &String::operator=(const String &src) noexcept {
+	return *this = src.c_str();
+}
+
 const String &String::operator+=(const char *str) noexcept {
 	std::size_t strLen = ox_strlen(str);
 	auto currentLen = len();

src/ox/std/string.hpp

@@ -33,6 +33,8 @@ class String {
 
 		const String &operator=(int64_t i) noexcept;
 
+		const String &operator=(const String &src) noexcept;
+
 		const String &operator+=(const char *str) noexcept;
 
 		const String &operator+=(char *str) noexcept;