161 lines
3.9 KiB
C++
161 lines
3.9 KiB
C++
// Tencent is pleased to support the open source community by making RapidJSON available.
|
|
//
|
|
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
|
|
//
|
|
// Licensed under the MIT License (the "License"); you may not use this file except
|
|
// in compliance with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://opensource.org/licenses/MIT
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software distributed
|
|
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations under the License.
|
|
|
|
#include "unittest.h"
|
|
#include "rapidjson/internal/itoa.h"
|
|
|
|
#ifdef __GNUC__
|
|
RAPIDJSON_DIAG_PUSH
|
|
RAPIDJSON_DIAG_OFF(type-limits)
|
|
#endif
|
|
|
|
using namespace rapidjson::internal;
|
|
|
|
template <typename T>
|
|
struct Traits {
|
|
};
|
|
|
|
template <>
|
|
struct Traits<uint32_t> {
|
|
enum { kBufferSize = 11 };
|
|
enum { kMaxDigit = 10 };
|
|
static uint32_t Negate(uint32_t x) { return x; }
|
|
};
|
|
|
|
template <>
|
|
struct Traits<int32_t> {
|
|
enum { kBufferSize = 12 };
|
|
enum { kMaxDigit = 10 };
|
|
static int32_t Negate(int32_t x) { return -x; }
|
|
};
|
|
|
|
template <>
|
|
struct Traits<uint64_t> {
|
|
enum { kBufferSize = 21 };
|
|
enum { kMaxDigit = 20 };
|
|
static uint64_t Negate(uint64_t x) { return x; }
|
|
};
|
|
|
|
template <>
|
|
struct Traits<int64_t> {
|
|
enum { kBufferSize = 22 };
|
|
enum { kMaxDigit = 20 };
|
|
static int64_t Negate(int64_t x) { return -x; }
|
|
};
|
|
|
|
template <typename T>
|
|
static void VerifyValue(T value, void(*f)(T, char*), char* (*g)(T, char*)) {
|
|
char buffer1[Traits<T>::kBufferSize];
|
|
char buffer2[Traits<T>::kBufferSize];
|
|
|
|
f(value, buffer1);
|
|
*g(value, buffer2) = '\0';
|
|
|
|
|
|
EXPECT_STREQ(buffer1, buffer2);
|
|
}
|
|
|
|
template <typename T>
|
|
static void Verify(void(*f)(T, char*), char* (*g)(T, char*)) {
|
|
// Boundary cases
|
|
VerifyValue<T>(0, f, g);
|
|
VerifyValue<T>(std::numeric_limits<T>::min(), f, g);
|
|
VerifyValue<T>(std::numeric_limits<T>::max(), f, g);
|
|
|
|
// 2^n - 1, 2^n, 10^n - 1, 10^n until overflow
|
|
for (uint32_t power = 2; power <= 10; power += 8) {
|
|
T i = 1, last;
|
|
do {
|
|
VerifyValue<T>(i - 1, f, g);
|
|
VerifyValue<T>(i, f, g);
|
|
if (std::numeric_limits<T>::min() < 0) {
|
|
VerifyValue<T>(Traits<T>::Negate(i), f, g);
|
|
VerifyValue<T>(Traits<T>::Negate(i + 1), f, g);
|
|
}
|
|
last = i;
|
|
if (i > static_cast<T>(std::numeric_limits<T>::max() / static_cast<T>(power)))
|
|
break;
|
|
i *= power;
|
|
} while (last < i);
|
|
}
|
|
}
|
|
|
|
static void u32toa_naive(uint32_t value, char* buffer) {
|
|
char temp[10];
|
|
char *p = temp;
|
|
do {
|
|
*p++ = static_cast<char>(char(value % 10) + '0');
|
|
value /= 10;
|
|
} while (value > 0);
|
|
|
|
do {
|
|
*buffer++ = *--p;
|
|
} while (p != temp);
|
|
|
|
*buffer = '\0';
|
|
}
|
|
|
|
static void i32toa_naive(int32_t value, char* buffer) {
|
|
uint32_t u = static_cast<uint32_t>(value);
|
|
if (value < 0) {
|
|
*buffer++ = '-';
|
|
u = ~u + 1;
|
|
}
|
|
u32toa_naive(u, buffer);
|
|
}
|
|
|
|
static void u64toa_naive(uint64_t value, char* buffer) {
|
|
char temp[20];
|
|
char *p = temp;
|
|
do {
|
|
*p++ = static_cast<char>(char(value % 10) + '0');
|
|
value /= 10;
|
|
} while (value > 0);
|
|
|
|
do {
|
|
*buffer++ = *--p;
|
|
} while (p != temp);
|
|
|
|
*buffer = '\0';
|
|
}
|
|
|
|
static void i64toa_naive(int64_t value, char* buffer) {
|
|
uint64_t u = static_cast<uint64_t>(value);
|
|
if (value < 0) {
|
|
*buffer++ = '-';
|
|
u = ~u + 1;
|
|
}
|
|
u64toa_naive(u, buffer);
|
|
}
|
|
|
|
TEST(itoa, u32toa) {
|
|
Verify(u32toa_naive, u32toa);
|
|
}
|
|
|
|
TEST(itoa, i32toa) {
|
|
Verify(i32toa_naive, i32toa);
|
|
}
|
|
|
|
TEST(itoa, u64toa) {
|
|
Verify(u64toa_naive, u64toa);
|
|
}
|
|
|
|
TEST(itoa, i64toa) {
|
|
Verify(i64toa_naive, i64toa);
|
|
}
|
|
|
|
#ifdef __GNUC__
|
|
RAPIDJSON_DIAG_POP
|
|
#endif
|