Merge pull request #48080 from aaronfranke/real-serialization

Binary serialization for reals

core/io/marshalls.h

@@ -31,10 +31,18 @@
 #ifndef MARSHALLS_H
 #define MARSHALLS_H
 
+#include "core/math/math_defs.h"
 #include "core/object/ref_counted.h"
 #include "core/typedefs.h"
 #include "core/variant/variant.h"
 
+// uintr_t is only for pairing with real_t, and we only need it in here.
+#ifdef REAL_T_IS_DOUBLE
+typedef uint64_t uintr_t;
+#else
+typedef uint32_t uintr_t;
+#endif
+
 /**
   * Miscellaneous helpers for marshalling data types, and encoding
   * in an endian independent way
@@ -50,6 +58,12 @@ union MarshallDouble {
 	double d; ///< double
 };
 
+// Behaves like one of the above, depending on compilation setting.
+union MarshallReal {
+	uintr_t i;
+	real_t r;
+};
+
 static inline unsigned int encode_uint16(uint16_t p_uint, uint8_t *p_arr) {
 	for (int i = 0; i < 2; i++) {
 		*p_arr = p_uint & 0xFF;
@@ -96,6 +110,24 @@ static inline unsigned int encode_double(double p_double, uint8_t *p_arr) {
 	return sizeof(uint64_t);
 }
 
+static inline unsigned int encode_uintr(uintr_t p_uint, uint8_t *p_arr) {
+	for (size_t i = 0; i < sizeof(uintr_t); i++) {
+		*p_arr = p_uint & 0xFF;
+		p_arr++;
+		p_uint >>= 8;
+	}
+
+	return sizeof(uintr_t);
+}
+
+static inline unsigned int encode_real(real_t p_real, uint8_t *p_arr) {
+	MarshallReal mr;
+	mr.r = p_real;
+	encode_uintr(mr.i, p_arr);
+
+	return sizeof(uintr_t);
+}
+
 static inline int encode_cstring(const char *p_string, uint8_t *p_data) {
 	int len = 0;