43     size_t pos;  variable
48         pos = 0;  in MessageBuf()
54         pos = 0;  in MessageBuf()
58     void reset() { pos = 0; }  in reset()
61     size_t getPos() const { return pos; }  in getPos()
62     size_t getRoom() const { return size - pos; }  in getRoom()
64         if (pos == size) {  in readU8()
67         return data[pos++];  in readU8()
70         if (pos == size || readOnly)  in writeU8()
72         data[pos++] = val;  in writeU8()
75         if (pos > (size - sizeof(uint16_t))) {  in readU16()
79         memcpy(&val, &data[pos], sizeof(val));  in readU16()
80         pos += sizeof(val);  in readU16()
84         if (pos > (size - sizeof(uint16_t)) || readOnly) {  in writeU16()
88         memcpy(&data[pos], &tmp, sizeof(tmp));  in writeU16()
89         pos += sizeof(tmp);  in writeU16()
92         if (pos > (size - sizeof(uint32_t))) {  in readU32()
96         memcpy(&val, &data[pos], sizeof(val));  in readU32()
97         pos += sizeof(val);  in readU32()
101         if (pos > (size - sizeof(uint32_t)) || readOnly) {  in writeU32()
105         memcpy(&data[pos], &tmp, sizeof(tmp));  in writeU32()
106         pos += sizeof(tmp);  in writeU32()
109         if (pos > (size - sizeof(uint64_t))) {  in readU64()
113         memcpy(&val, &data[pos], sizeof(val));  in readU64()
114         pos += sizeof(val);  in readU64()
118         if (pos > (size - sizeof(uint64_t)) || readOnly) {  in writeU64()
122         memcpy(&data[pos], &tmp, sizeof(tmp));  in writeU64()
123         pos += sizeof(tmp);  in writeU64()
126         if (pos > (size - bufSize)) {  in readRaw()
129         const void *buf = &data[pos];  in readRaw()
130         pos += bufSize;  in readRaw()
134         if (pos > (size - bufSize) || readOnly) {  in writeRaw()
137         memcpy(&data[pos], buf, bufSize);  in writeRaw()
138         pos += bufSize;  in writeRaw()