j3d1/json
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

🔨 refactored msgpack code

Browse source
This commit is contained in:
Niels Lohmann 2016-12-10 21:30:18 +01:00
parent f1b95d78f9
commit 7e5d6af5c1
2 changed files with 460 additions and 468 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

250
src/json.hpp
View file

@ -6780,6 +6780,8 @@ class basic_json
// store and increment index
const size_t current_idx = idx++;
if (v[current_idx] <= 0xbf)
{
if (v[current_idx] <= 0x7f) // positive fixint
{
return v[current_idx];
@ -6805,34 +6807,38 @@ class basic_json
}
return result;
}
else if (v[current_idx] <= 0xbf) // fixstr
else // fixstr
{
const size_t len = v[current_idx] & 0x1f;
const size_t offset = current_idx + 1;
idx += len; // skip content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xc0) // nil
}
else if (v[current_idx] >= 0xe0) // negative fixint
{
return static_cast<int8_t>(v[current_idx]);
}
else
{
switch (v[current_idx])
{
case 0xc0: // nil
{
return value_t::null;
}
else if (v[current_idx] == 0xc1) // never used
{
throw std::invalid_argument("value 0x31 must not be used@ " + std::to_string(current_idx));
}
else if (v[current_idx] == 0xc2) // false
case 0xc2: // false
{
return false;
}
else if (v[current_idx] == 0xc3) // true
case 0xc3: // true
{
return true;
}
else if (v[current_idx] >= 0xc4 and v[current_idx] <= 0xc9) // bin/ext
{
throw std::invalid_argument("bin/ext are not supported @ " + std::to_string(current_idx));
}
else if (v[current_idx] == 0xca) // float 32
case 0xca: // float 32
{
// copy bytes in reverse order into the double variable
float res;
@ -6843,7 +6849,8 @@ class basic_json
idx += sizeof(float); // skip content bytes
return res;
}
else if (v[current_idx] == 0xcb) // float 64
case 0xcb: // float 64
{
// copy bytes in reverse order into the double variable
double res;
@ -6854,72 +6861,80 @@ class basic_json
idx += sizeof(double); // skip content bytes
return res;
}
else if (v[current_idx] == 0xcc) // uint 8
case 0xcc: // uint 8
{
idx += 1; // skip content byte
return get_from_vector<uint8_t>(v, current_idx);
}
else if (v[current_idx] == 0xcd) // uint 16
case 0xcd: // uint 16
{
idx += 2; // skip 2 content bytes
return get_from_vector<uint16_t>(v, current_idx);
}
else if (v[current_idx] == 0xce) // uint 32
case 0xce: // uint 32
{
idx += 4; // skip 4 content bytes
return get_from_vector<uint32_t>(v, current_idx);
}
else if (v[current_idx] == 0xcf) // uint 64
case 0xcf: // uint 64
{
idx += 8; // skip 8 content bytes
return get_from_vector<uint64_t>(v, current_idx);
}
else if (v[current_idx] == 0xd0) // int 8
case 0xd0: // int 8
{
idx += 1; // skip content byte
return get_from_vector<int8_t>(v, current_idx);
}
else if (v[current_idx] == 0xd1) // int 16
case 0xd1: // int 16
{
idx += 2; // skip 2 content bytes
return get_from_vector<int16_t>(v, current_idx);
}
else if (v[current_idx] == 0xd2) // int 32
case 0xd2: // int 32
{
idx += 4; // skip 4 content bytes
return get_from_vector<int32_t>(v, current_idx);
}
else if (v[current_idx] == 0xd3) // int 64
case 0xd3: // int 64
{
idx += 8; // skip 8 content bytes
return get_from_vector<int64_t>(v, current_idx);
}
else if (v[current_idx] >= 0xd4 and v[current_idx] <= 0xd8) // fixext
{
throw std::invalid_argument("bin/ext are not supported @ " + std::to_string(current_idx));
}
else if (v[current_idx] == 0xd9) // str 8
case 0xd9: // str 8
{
const auto len = get_from_vector<uint8_t>(v, current_idx);
const size_t offset = current_idx + 2;
idx += len + 1; // skip size byte + content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xda) // str 16
case 0xda: // str 16
{
const auto len = get_from_vector<uint16_t>(v, current_idx);
const size_t offset = current_idx + 3;
idx += len + 2; // skip 2 size bytes + content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xdb) // str 32
case 0xdb: // str 32
{
const auto len = get_from_vector<uint32_t>(v, current_idx);
const size_t offset = current_idx + 5;
idx += len + 4; // skip 4 size bytes + content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xdc) // array 16
case 0xdc: // array 16
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint16_t>(v, current_idx);
@ -6930,48 +6945,52 @@ class basic_json
}
return result;
}
else if (v[current_idx] == 0xdd) // array 32
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
result.push_back(from_msgpack_internal(v, idx));
}
return result;
}
else if (v[current_idx] == 0xde) // map 16
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint16_t>(v, current_idx);
idx += 2; // skip 2 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
else if (v[current_idx] == 0xdf) // map 32
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
else if (v[current_idx] >= 0xe0) // negative fixint
{
return static_cast<int8_t>(v[current_idx]);
}
case 0xdd: // array 32
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
result.push_back(from_msgpack_internal(v, idx));
}
return result;
}
case 0xde: // map 16
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint16_t>(v, current_idx);
idx += 2; // skip 2 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
case 0xdf: // map 32
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
default:
{
throw std::invalid_argument("error parsing a msgpack @ " + std::to_string(current_idx));
}
}
}
}
static basic_json from_cbor_internal(const std::vector<uint8_t>& v, size_t& idx)
{
@ -6980,7 +6999,7 @@ class basic_json
switch (v[current_idx])
{
// integer
// Integer 0x00..0x17 (0..23)
case 0x00:
case 0x01:
case 0x02:
@ -7009,31 +7028,31 @@ class basic_json
return v[current_idx];
}
case 0x18: // Unsigned integer uint8_t
case 0x18: // Unsigned integer (one-byte uint8_t follows)
{
idx += 1; // skip content byte
return get_from_vector<uint8_t>(v, current_idx);
}
case 0x19: // Unsigned integer uint16_t
case 0x19: // Unsigned integer (two-byte uint16_t follows)
{
idx += 2; // skip 2 content bytes
return get_from_vector<uint16_t>(v, current_idx);
}
case 0x1a: // Unsigned integer uint32_t
case 0x1a: // Unsigned integer (four-byte uint32_t follows)
{
idx += 4; // skip 4 content bytes
return get_from_vector<uint32_t>(v, current_idx);
}
case 0x1b: // Unsigned integer uint64_t
case 0x1b: // Unsigned integer (eight-byte uint64_t follows)
{
idx += 8; // skip 8 content bytes
return get_from_vector<uint64_t>(v, current_idx);
}
// Negative integer
// Negative integer -1-0x00..-1-0x17 (-1..-24)
case 0x20:
case 0x21:
case 0x22:
@ -7062,32 +7081,32 @@ class basic_json
return static_cast<int8_t>(0x20 - 1 - v[current_idx]);
}
case 0x38: // Negative integer
case 0x38: // Negative integer (one-byte uint8_t follows)
{
idx += 1; // skip content byte
// must be uint8_t !
return -1 - get_from_vector<uint8_t>(v, current_idx);
}
case 0x39: // Negative integer
case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
{
idx += 2; // skip 2 content bytes
return -1 - get_from_vector<int16_t>(v, current_idx);
}
case 0x3a: // Negative integer
case 0x3a: // Negative integer -1-n (four-byte uint32_t follows)
{
idx += 4; // skip 4 content bytes
return -1 - get_from_vector<int32_t>(v, current_idx);
}
case 0x3b: // Negative integer
case 0x3b: // Negative integer -1-n (eight-byte uint64_t follows)
{
idx += 8; // skip 8 content bytes
return -1 - get_from_vector<int64_t>(v, current_idx);
}
// UTF-8 string
// UTF-8 string (0x00..0x17 bytes follow)
case 0x60:
case 0x61:
case 0x62:
@ -7119,7 +7138,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x78: // UTF-8 string
case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
{
const auto len = get_from_vector<uint8_t>(v, current_idx);
const size_t offset = current_idx + 2;
@ -7127,7 +7146,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x79: // UTF-8 string
case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
{
const auto len = get_from_vector<uint16_t>(v, current_idx);
const size_t offset = current_idx + 3;
@ -7135,7 +7154,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x7a: // UTF-8 string
case 0x7a: // UTF-8 string (four-byte uint32_t for n follow)
{
const auto len = get_from_vector<uint32_t>(v, current_idx);
const size_t offset = current_idx + 5;
@ -7143,7 +7162,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x7b: // UTF-8 string
case 0x7b: // UTF-8 string (eight-byte uint64_t for n follow)
{
const auto len = get_from_vector<uint64_t>(v, current_idx);
const size_t offset = current_idx + 9;
@ -7164,7 +7183,7 @@ class basic_json
return result;
}
// array
// array (0x00..0x17 data items follow)
case 0x80:
case 0x81:
case 0x82:
@ -7199,7 +7218,7 @@ class basic_json
return result;
}
case 0x98: // array
case 0x98: // array (one-byte uint8_t for n follows)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint8_t>(v, current_idx);
@ -7211,7 +7230,7 @@ class basic_json
return result;
}
case 0x99: // array
case 0x99: // array (two-byte uint16_t for n follow)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint16_t>(v, current_idx);
@ -7223,7 +7242,7 @@ class basic_json
return result;
}
case 0x9a: // array
case 0x9a: // array (four-byte uint32_t for n follow)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint32_t>(v, current_idx);
@ -7235,7 +7254,7 @@ class basic_json
return result;
}
case 0x9b: // array
case 0x9b: // array (eight-byte uint64_t for n follow)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint64_t>(v, current_idx);
@ -7259,7 +7278,7 @@ class basic_json
return result;
}
// map
// map (0x00..0x17 pairs of data items follow)
case 0xa0:
case 0xa1:
case 0xa2:
@ -7295,7 +7314,7 @@ class basic_json
return result;
}
case 0xb8: // map
case 0xb8: // map (one-byte uint8_t for n follows)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint8_t>(v, current_idx);
@ -7308,7 +7327,7 @@ class basic_json
return result;
}
case 0xb9: // map
case 0xb9: // map (two-byte uint16_t for n follow)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint16_t>(v, current_idx);
@ -7321,7 +7340,7 @@ class basic_json
return result;
}
case 0xba: // map
case 0xba: // map (four-byte uint32_t for n follow)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint32_t>(v, current_idx);
@ -7334,7 +7353,7 @@ class basic_json
return result;
}
case 0xbb: // map
case 0xbb: // map (eight-byte uint64_t for n follow)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint64_t>(v, current_idx);
@ -7375,17 +7394,17 @@ class basic_json
return value_t::null;
}
case 0xf9: // Half-Precision Float
case 0xf9: // Half-Precision Float (two-byte IEEE 754)
{
idx += 2; // skip two content bytes
// code from RFC 7049, Appendix D, Figure 3:
// As half-precision floating-point numbers were only added to IEEE
// 754 in 2008, today's programming platforms often still only have
// limited support for them. It is very easy to include at least
// decoding support for them even without such support. An example
// of a small decoder for half-precision floating-point numbers in
// the C language is shown in Figure 3.
// As half-precision floating-point numbers were only added to
// IEEE 754 in 2008, today's programming platforms often still
// only have limited support for them. It is very easy to
// include at least decoding support for them even without such
// support. An example of a small decoder for half-precision
// floating-point numbers in the C language is shown in Fig. 3.
const int half = (v[current_idx + 1] << 8) + v[current_idx + 2];
const int exp = (half >> 10) & 0x1f;
const int mant = half & 0x3ff;
@ -7405,7 +7424,7 @@ class basic_json
return half & 0x8000 ? -val : val;
}
case 0xfa: // Single-Precision Float
case 0xfa: // Single-Precision Float (four-byte IEEE 754)
{
// copy bytes in reverse order into the float variable
float res;
@ -7417,7 +7436,7 @@ class basic_json
return res;
}
case 0xfb: // Double-Precision Float
case 0xfb: // Double-Precision Float (eight-byte IEEE 754)
{
// copy bytes in reverse order into the double variable
double res;
@ -7429,30 +7448,7 @@ class basic_json
return res;
}
// 40..57 byte string
// 58 byte string
// 59 byte string
// 5a byte string
// 5b byte string
// 5f byte string
// 7f UTF-8 string with break
// 9f array with break
// bf map with break
// c0 Text-based date/time
// c1 Epoch-based date/time
// c2 Positive bignum
// c3 Positive bignum
// c4 Decimal Fraction
// c5 Bigfloat
// c6..d4 tagged item
// d5..d7 Expected Conversion
// d8..db more tagged items
// e0..f3 simple value
// f7 undefined
// f8 simple value
// f9 half-precision float
// ff break stop code
default:
default: // anything else (0xFF is handled inside the other types)
{
throw std::invalid_argument("error parsing a CBOR @ " + std::to_string(current_idx) + ": " + std::to_string(v[current_idx]));
}

250
src/json.hpp.re2c
View file

@ -6780,6 +6780,8 @@ class basic_json
// store and increment index
const size_t current_idx = idx++;
if (v[current_idx] <= 0xbf)
{
if (v[current_idx] <= 0x7f) // positive fixint
{
return v[current_idx];
@ -6805,34 +6807,38 @@ class basic_json
}
return result;
}
else if (v[current_idx] <= 0xbf) // fixstr
else // fixstr
{
const size_t len = v[current_idx] & 0x1f;
const size_t offset = current_idx + 1;
idx += len; // skip content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xc0) // nil
}
else if (v[current_idx] >= 0xe0) // negative fixint
{
return static_cast<int8_t>(v[current_idx]);
}
else
{
switch (v[current_idx])
{
case 0xc0: // nil
{
return value_t::null;
}
else if (v[current_idx] == 0xc1) // never used
{
throw std::invalid_argument("value 0x31 must not be used@ " + std::to_string(current_idx));
}
else if (v[current_idx] == 0xc2) // false
case 0xc2: // false
{
return false;
}
else if (v[current_idx] == 0xc3) // true
case 0xc3: // true
{
return true;
}
else if (v[current_idx] >= 0xc4 and v[current_idx] <= 0xc9) // bin/ext
{
throw std::invalid_argument("bin/ext are not supported @ " + std::to_string(current_idx));
}
else if (v[current_idx] == 0xca) // float 32
case 0xca: // float 32
{
// copy bytes in reverse order into the double variable
float res;
@ -6843,7 +6849,8 @@ class basic_json
idx += sizeof(float); // skip content bytes
return res;
}
else if (v[current_idx] == 0xcb) // float 64
case 0xcb: // float 64
{
// copy bytes in reverse order into the double variable
double res;
@ -6854,72 +6861,80 @@ class basic_json
idx += sizeof(double); // skip content bytes
return res;
}
else if (v[current_idx] == 0xcc) // uint 8
case 0xcc: // uint 8
{
idx += 1; // skip content byte
return get_from_vector<uint8_t>(v, current_idx);
}
else if (v[current_idx] == 0xcd) // uint 16
case 0xcd: // uint 16
{
idx += 2; // skip 2 content bytes
return get_from_vector<uint16_t>(v, current_idx);
}
else if (v[current_idx] == 0xce) // uint 32
case 0xce: // uint 32
{
idx += 4; // skip 4 content bytes
return get_from_vector<uint32_t>(v, current_idx);
}
else if (v[current_idx] == 0xcf) // uint 64
case 0xcf: // uint 64
{
idx += 8; // skip 8 content bytes
return get_from_vector<uint64_t>(v, current_idx);
}
else if (v[current_idx] == 0xd0) // int 8
case 0xd0: // int 8
{
idx += 1; // skip content byte
return get_from_vector<int8_t>(v, current_idx);
}
else if (v[current_idx] == 0xd1) // int 16
case 0xd1: // int 16
{
idx += 2; // skip 2 content bytes
return get_from_vector<int16_t>(v, current_idx);
}
else if (v[current_idx] == 0xd2) // int 32
case 0xd2: // int 32
{
idx += 4; // skip 4 content bytes
return get_from_vector<int32_t>(v, current_idx);
}
else if (v[current_idx] == 0xd3) // int 64
case 0xd3: // int 64
{
idx += 8; // skip 8 content bytes
return get_from_vector<int64_t>(v, current_idx);
}
else if (v[current_idx] >= 0xd4 and v[current_idx] <= 0xd8) // fixext
{
throw std::invalid_argument("bin/ext are not supported @ " + std::to_string(current_idx));
}
else if (v[current_idx] == 0xd9) // str 8
case 0xd9: // str 8
{
const auto len = get_from_vector<uint8_t>(v, current_idx);
const size_t offset = current_idx + 2;
idx += len + 1; // skip size byte + content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xda) // str 16
case 0xda: // str 16
{
const auto len = get_from_vector<uint16_t>(v, current_idx);
const size_t offset = current_idx + 3;
idx += len + 2; // skip 2 size bytes + content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xdb) // str 32
case 0xdb: // str 32
{
const auto len = get_from_vector<uint32_t>(v, current_idx);
const size_t offset = current_idx + 5;
idx += len + 4; // skip 4 size bytes + content bytes
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
else if (v[current_idx] == 0xdc) // array 16
case 0xdc: // array 16
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint16_t>(v, current_idx);
@ -6930,48 +6945,52 @@ class basic_json
}
return result;
}
else if (v[current_idx] == 0xdd) // array 32
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
result.push_back(from_msgpack_internal(v, idx));
}
return result;
}
else if (v[current_idx] == 0xde) // map 16
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint16_t>(v, current_idx);
idx += 2; // skip 2 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
else if (v[current_idx] == 0xdf) // map 32
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
else if (v[current_idx] >= 0xe0) // negative fixint
{
return static_cast<int8_t>(v[current_idx]);
}
case 0xdd: // array 32
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
result.push_back(from_msgpack_internal(v, idx));
}
return result;
}
case 0xde: // map 16
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint16_t>(v, current_idx);
idx += 2; // skip 2 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
case 0xdf: // map 32
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint32_t>(v, current_idx);
idx += 4; // skip 4 size bytes
for (size_t i = 0; i < len; ++i)
{
std::string key = from_msgpack_internal(v, idx);
result[key] = from_msgpack_internal(v, idx);
}
return result;
}
default:
{
throw std::invalid_argument("error parsing a msgpack @ " + std::to_string(current_idx));
}
}
}
}
static basic_json from_cbor_internal(const std::vector<uint8_t>& v, size_t& idx)
{
@ -6980,7 +6999,7 @@ class basic_json
switch (v[current_idx])
{
// integer
// Integer 0x00..0x17 (0..23)
case 0x00:
case 0x01:
case 0x02:
@ -7009,31 +7028,31 @@ class basic_json
return v[current_idx];
}
case 0x18: // Unsigned integer uint8_t
case 0x18: // Unsigned integer (one-byte uint8_t follows)
{
idx += 1; // skip content byte
return get_from_vector<uint8_t>(v, current_idx);
}
case 0x19: // Unsigned integer uint16_t
case 0x19: // Unsigned integer (two-byte uint16_t follows)
{
idx += 2; // skip 2 content bytes
return get_from_vector<uint16_t>(v, current_idx);
}
case 0x1a: // Unsigned integer uint32_t
case 0x1a: // Unsigned integer (four-byte uint32_t follows)
{
idx += 4; // skip 4 content bytes
return get_from_vector<uint32_t>(v, current_idx);
}
case 0x1b: // Unsigned integer uint64_t
case 0x1b: // Unsigned integer (eight-byte uint64_t follows)
{
idx += 8; // skip 8 content bytes
return get_from_vector<uint64_t>(v, current_idx);
}
// Negative integer
// Negative integer -1-0x00..-1-0x17 (-1..-24)
case 0x20:
case 0x21:
case 0x22:
@ -7062,32 +7081,32 @@ class basic_json
return static_cast<int8_t>(0x20 - 1 - v[current_idx]);
}
case 0x38: // Negative integer
case 0x38: // Negative integer (one-byte uint8_t follows)
{
idx += 1; // skip content byte
// must be uint8_t !
return -1 - get_from_vector<uint8_t>(v, current_idx);
}
case 0x39: // Negative integer
case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
{
idx += 2; // skip 2 content bytes
return -1 - get_from_vector<int16_t>(v, current_idx);
}
case 0x3a: // Negative integer
case 0x3a: // Negative integer -1-n (four-byte uint32_t follows)
{
idx += 4; // skip 4 content bytes
return -1 - get_from_vector<int32_t>(v, current_idx);
}
case 0x3b: // Negative integer
case 0x3b: // Negative integer -1-n (eight-byte uint64_t follows)
{
idx += 8; // skip 8 content bytes
return -1 - get_from_vector<int64_t>(v, current_idx);
}
// UTF-8 string
// UTF-8 string (0x00..0x17 bytes follow)
case 0x60:
case 0x61:
case 0x62:
@ -7119,7 +7138,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x78: // UTF-8 string
case 0x78: // UTF-8 string (one-byte uint8_t for n follows)
{
const auto len = get_from_vector<uint8_t>(v, current_idx);
const size_t offset = current_idx + 2;
@ -7127,7 +7146,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x79: // UTF-8 string
case 0x79: // UTF-8 string (two-byte uint16_t for n follow)
{
const auto len = get_from_vector<uint16_t>(v, current_idx);
const size_t offset = current_idx + 3;
@ -7135,7 +7154,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x7a: // UTF-8 string
case 0x7a: // UTF-8 string (four-byte uint32_t for n follow)
{
const auto len = get_from_vector<uint32_t>(v, current_idx);
const size_t offset = current_idx + 5;
@ -7143,7 +7162,7 @@ class basic_json
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
case 0x7b: // UTF-8 string
case 0x7b: // UTF-8 string (eight-byte uint64_t for n follow)
{
const auto len = get_from_vector<uint64_t>(v, current_idx);
const size_t offset = current_idx + 9;
@ -7164,7 +7183,7 @@ class basic_json
return result;
}
// array
// array (0x00..0x17 data items follow)
case 0x80:
case 0x81:
case 0x82:
@ -7199,7 +7218,7 @@ class basic_json
return result;
}
case 0x98: // array
case 0x98: // array (one-byte uint8_t for n follows)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint8_t>(v, current_idx);
@ -7211,7 +7230,7 @@ class basic_json
return result;
}
case 0x99: // array
case 0x99: // array (two-byte uint16_t for n follow)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint16_t>(v, current_idx);
@ -7223,7 +7242,7 @@ class basic_json
return result;
}
case 0x9a: // array
case 0x9a: // array (four-byte uint32_t for n follow)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint32_t>(v, current_idx);
@ -7235,7 +7254,7 @@ class basic_json
return result;
}
case 0x9b: // array
case 0x9b: // array (eight-byte uint64_t for n follow)
{
basic_json result = value_t::array;
const auto len = get_from_vector<uint64_t>(v, current_idx);
@ -7259,7 +7278,7 @@ class basic_json
return result;
}
// map
// map (0x00..0x17 pairs of data items follow)
case 0xa0:
case 0xa1:
case 0xa2:
@ -7295,7 +7314,7 @@ class basic_json
return result;
}
case 0xb8: // map
case 0xb8: // map (one-byte uint8_t for n follows)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint8_t>(v, current_idx);
@ -7308,7 +7327,7 @@ class basic_json
return result;
}
case 0xb9: // map
case 0xb9: // map (two-byte uint16_t for n follow)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint16_t>(v, current_idx);
@ -7321,7 +7340,7 @@ class basic_json
return result;
}
case 0xba: // map
case 0xba: // map (four-byte uint32_t for n follow)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint32_t>(v, current_idx);
@ -7334,7 +7353,7 @@ class basic_json
return result;
}
case 0xbb: // map
case 0xbb: // map (eight-byte uint64_t for n follow)
{
basic_json result = value_t::object;
const auto len = get_from_vector<uint64_t>(v, current_idx);
@ -7375,17 +7394,17 @@ class basic_json
return value_t::null;
}
case 0xf9: // Half-Precision Float
case 0xf9: // Half-Precision Float (two-byte IEEE 754)
{
idx += 2; // skip two content bytes
// code from RFC 7049, Appendix D, Figure 3:
// As half-precision floating-point numbers were only added to IEEE
// 754 in 2008, today's programming platforms often still only have
// limited support for them. It is very easy to include at least
// decoding support for them even without such support. An example
// of a small decoder for half-precision floating-point numbers in
// the C language is shown in Figure 3.
// As half-precision floating-point numbers were only added to
// IEEE 754 in 2008, today's programming platforms often still
// only have limited support for them. It is very easy to
// include at least decoding support for them even without such
// support. An example of a small decoder for half-precision
// floating-point numbers in the C language is shown in Fig. 3.
const int half = (v[current_idx + 1] << 8) + v[current_idx + 2];
const int exp = (half >> 10) & 0x1f;
const int mant = half & 0x3ff;
@ -7405,7 +7424,7 @@ class basic_json
return half & 0x8000 ? -val : val;
}
case 0xfa: // Single-Precision Float
case 0xfa: // Single-Precision Float (four-byte IEEE 754)
{
// copy bytes in reverse order into the float variable
float res;
@ -7417,7 +7436,7 @@ class basic_json
return res;
}
case 0xfb: // Double-Precision Float
case 0xfb: // Double-Precision Float (eight-byte IEEE 754)
{
// copy bytes in reverse order into the double variable
double res;
@ -7429,30 +7448,7 @@ class basic_json
return res;
}
// 40..57 byte string
// 58 byte string
// 59 byte string
// 5a byte string
// 5b byte string
// 5f byte string
// 7f UTF-8 string with break
// 9f array with break
// bf map with break
// c0 Text-based date/time
// c1 Epoch-based date/time
// c2 Positive bignum
// c3 Positive bignum
// c4 Decimal Fraction
// c5 Bigfloat
// c6..d4 tagged item
// d5..d7 Expected Conversion
// d8..db more tagged items
// e0..f3 simple value
// f7 undefined
// f8 simple value
// f9 half-precision float
// ff break stop code
default:
default: // anything else (0xFF is handled inside the other types)
{
throw std::invalid_argument("error parsing a CBOR @ " + std::to_string(current_idx) + ": " + std::to_string(v[current_idx]));
}