[ox/std] Add String::operator+ methods

deps/ox/src/ox/std/string.cpp

@@ -7,6 +7,7 @@
  */
 
 #include "string.hpp"
+#include "types.hpp"
 
 namespace ox {
 
@@ -14,6 +15,10 @@ String::String() noexcept {
 	m_buff.push_back(0);
 }
 
+String::String(std::size_t cap) noexcept {
+	m_buff.resize(cap + 1);
+}
+
 String::String(const char *str) noexcept {
 	m_buff.push_back(0);
 	*this = str;
@@ -58,6 +63,36 @@ const String &String::operator+=(int64_t i) noexcept {
 	return this->operator+=(str);
 }
 
+const String &String::operator+=(const String &src) noexcept {
+	return *this += src.c_str();
+}
+
+const String String::operator+(const char *str) const noexcept {
+	std::size_t strLen = ox_strlen(str);
+	auto currentLen = len();
+	String cpy(currentLen + strLen);
+	cpy.m_buff.resize(m_buff.size() + strLen);
+	memcpy(&cpy.m_buff[0], m_buff.data(), currentLen);
+	memcpy(&cpy.m_buff[currentLen], str, strLen);
+	// make sure last element is a null terminator
+	cpy.m_buff[currentLen + strLen] = 0;
+	return cpy;
+}
+
+const String String::operator+(char *str) const noexcept {
+	return *this + static_cast<const char*>(str);
+}
+
+const String String::operator+(int64_t i) const noexcept {
+	char str[65] = {};
+	ox_itoa(i, str);
+	return *this + str;
+}
+
+const String String::operator+(const String &src) const noexcept {
+	return *this + src.c_str();
+}
+
 bool String::operator==(const String &other) noexcept {
 	bool retval = true;
 	std::size_t i = 0;

deps/ox/src/ox/std/string.hpp

@@ -24,6 +24,8 @@ class String {
 	public:
 		String() noexcept;
 
+		String(std::size_t cap) noexcept;
+
 		String(const char *str) noexcept;
 
 		const String &operator=(const char *str) noexcept;
@@ -38,6 +40,16 @@ class String {
 
 		const String &operator+=(int64_t i) noexcept;
 
+		const String &operator+=(const String &src) noexcept;
+
+		const String operator+(const char *str) const noexcept;
+
+		const String operator+(char *str) const noexcept;
+
+		const String operator+(int64_t i) const noexcept;
+
+		const String operator+(const String &src) const noexcept;
+
 		bool operator==(const String &other) noexcept;
 
 		bool operator!=(const String &other) noexcept;