More work on debug_string

luprex/core/cpp/util.cpp

@@ -6,6 +6,9 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <cmath>
+#include <iostream>
+#include <iomanip>
+
 #ifndef WIN32
 #include <unistd.h>
 #define stat _stat
@@ -130,3 +133,23 @@ std::string XYZ::debug_string() const {
 }
 
 } // namespace util
+
+std::ostream &operator<<(std::ostream &oss, const util::hex64 &v) {
+    oss << "0x" << std::setw(16) << std::setfill('0') << std::hex;
+    return oss;
+}
+
+std::ostream &operator<<(std::ostream &oss, const util::hex32 &v) {
+    oss << "0x" << std::setw(8) << std::setfill('0') << std::hex;
+    return oss;
+}
+
+std::ostream &operator<<(std::ostream &oss, const util::hex16 &v) {
+    oss << "0x" << std::setw(4) << std::setfill('0') << std::hex;
+    return oss;
+}
+
+std::ostream &operator<<(std::ostream &oss, const util::hex8 &v) {
+    oss << "0x" << std::setw(2) << std::setfill('0') << std::hex;
+    return oss;
+}