trans-gen 0.4.0

Generating trans code from Rust into other languages
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109

#include "Stream.hpp"
#include <algorithm>
#include <cstring>
#include <vector>

bool isLittleEndianMachine() {
  union {
    unsigned short value;
    char bytes[2];
  } test = {0x0201};
  return test.bytes[0] == 1;
}

bool IS_LITTLE_ENDIAN_MACHINE = isLittleEndianMachine();

bool InputStream::readBool() {
  char buffer[1];
  readBytes(buffer, 1);
  return buffer[0] != 0;
}

int InputStream::readInt() {
  char buffer[sizeof(int)];
  readBytes(buffer, sizeof(int));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(int));
  }
  return *reinterpret_cast<int *>(buffer);
}

long long InputStream::readLongLong() {
  char buffer[sizeof(long long)];
  readBytes(buffer, sizeof(long long));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(long long));
  }
  return *reinterpret_cast<long long *>(buffer);
}

float InputStream::readFloat() {
  char buffer[sizeof(float)];
  readBytes(buffer, sizeof(float));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(float));
  }
  return *reinterpret_cast<float *>(buffer);
}

double InputStream::readDouble() {
  char buffer[sizeof(double)];
  readBytes(buffer, sizeof(double));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(double));
  }
  return *reinterpret_cast<double *>(buffer);
}

std::string InputStream::readString() {
  std::vector<char> buffer(readInt());
  readBytes(&buffer[0], buffer.size());
  return std::string(&buffer[0], buffer.size());
}

void OutputStream::write(bool value) {
  char buffer[sizeof(bool)];
  std::memcpy(buffer, &value, sizeof(bool));
  writeBytes(buffer, sizeof(bool));
}

void OutputStream::write(int value) {
  char buffer[sizeof(int)];
  std::memcpy(buffer, &value, sizeof(int));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(int));
  }
  writeBytes(buffer, sizeof(int));
}

void OutputStream::write(long long value) {
  char buffer[sizeof(long long)];
  std::memcpy(buffer, &value, sizeof(long long));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(long long));
  }
  writeBytes(buffer, sizeof(long long));
}

void OutputStream::write(float value) {
  char buffer[sizeof(float)];
  std::memcpy(buffer, &value, sizeof(float));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(float));
  }
  writeBytes(buffer, sizeof(float));
}

void OutputStream::write(double value) {
  char buffer[sizeof(double)];
  std::memcpy(buffer, &value, sizeof(double));
  if (!IS_LITTLE_ENDIAN_MACHINE) {
    std::reverse(buffer, buffer + sizeof(double));
  }
  writeBytes(buffer, sizeof(double));
}

void OutputStream::write(const std::string &value) {
  write((int)(value.length()));
  writeBytes(value.c_str(), value.length());
}