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281be63d00
This uses “static” at function scope to avoid making local copies, even in cases where the compiler can’t see that the local copy is unnecessary. “constexpr” adds additional safety in that it prevents global state from being initialized from any runtime dependencies, which would be undesirable. At namespace scope, “constexpr” is also used where appropriate. For the most part, this was a mechanical transformation for things matching '(^| )const [^=]*\['. Similar transformations could be applied to non-arrays in some cases, but there’s limited practical impact in most non-array cases relative to arrays, there are far more use sites, and much more manual intervention would be required. Change-Id: I3513b739ee8b0be026f8285475cddc5f9cc81152 Reviewed-on: https://chromium-review.googlesource.com/583997 Commit-Queue: Mark Mentovai <mark@chromium.org> Reviewed-by: Leonard Mosescu <mosescu@chromium.org>
326 lines
11 KiB
C++
326 lines
11 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/stdlib/string_number_conversion.h"
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#include <sys/types.h>
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#include <limits>
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#include "base/macros.h"
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#include "gtest/gtest.h"
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namespace crashpad {
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namespace test {
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namespace {
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TEST(StringNumberConversion, StringToInt) {
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static constexpr struct {
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const char* string;
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bool valid;
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int value;
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} kTestData[] = {
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{"", false, 0},
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{"0", true, 0},
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{"1", true, 1},
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{"2147483647", true, std::numeric_limits<int>::max()},
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{"2147483648", false, 0},
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{"4294967295", false, 0},
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{"4294967296", false, 0},
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{"-1", true, -1},
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{"-2147483648", true, std::numeric_limits<int>::min()},
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{"-2147483649", false, 0},
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{"00", true, 0},
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{"01", true, 1},
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{"-01", true, -1},
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{"+2", true, 2},
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{"0x10", true, 16},
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{"-0x10", true, -16},
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{"+0x20", true, 32},
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{"0xf", true, 15},
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{"0xg", false, 0},
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{"0x7fffffff", true, std::numeric_limits<int>::max()},
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{"0x7FfFfFfF", true, std::numeric_limits<int>::max()},
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{"0x80000000", false, 0},
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{"0xFFFFFFFF", false, 0},
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{"-0x7fffffff", true, -2147483647},
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{"-0x80000000", true, std::numeric_limits<int>::min()},
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{"-0x80000001", false, 0},
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{"-0xffffffff", false, 0},
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{"0x100000000", false, 0},
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{"0xabcdef", true, 11259375},
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{"010", true, 8},
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{"-010", true, -8},
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{"+020", true, 16},
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{"07", true, 7},
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{"08", false, 0},
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{" 0", false, 0},
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{"0 ", false, 0},
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{" 0 ", false, 0},
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{" 1", false, 0},
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{"1 ", false, 0},
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{" 1 ", false, 0},
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{"a2", false, 0},
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{"2a", false, 0},
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{"2a2", false, 0},
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{".0", false, 0},
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{".1", false, 0},
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{"-.2", false, 0},
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{"+.3", false, 0},
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{"1.23", false, 0},
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{"-273.15", false, 0},
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{"+98.6", false, 0},
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{"1e1", false, 0},
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{"1E1", false, 0},
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{"0x123p4", false, 0},
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{"infinity", false, 0},
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{"NaN", false, 0},
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{"-9223372036854775810", false, 0},
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{"-9223372036854775809", false, 0},
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{"9223372036854775808", false, 0},
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{"9223372036854775809", false, 0},
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{"18446744073709551615", false, 0},
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{"18446744073709551616", false, 0},
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};
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for (size_t index = 0; index < arraysize(kTestData); ++index) {
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int value;
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bool valid = StringToNumber(kTestData[index].string, &value);
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if (kTestData[index].valid) {
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EXPECT_TRUE(valid) << "index " << index << ", string "
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<< kTestData[index].string;
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if (valid) {
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EXPECT_EQ(value, kTestData[index].value)
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<< "index " << index << ", string " << kTestData[index].string;
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}
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} else {
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EXPECT_FALSE(valid) << "index " << index << ", string "
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<< kTestData[index].string << ", value " << value;
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}
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}
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// Ensure that embedded NUL characters are treated as bad input. The string
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// is split to avoid MSVC warning:
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// "decimal digit terminates octal escape sequence".
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static constexpr char input[] = "6\000" "6";
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base::StringPiece input_string(input, arraysize(input) - 1);
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int output;
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EXPECT_FALSE(StringToNumber(input_string, &output));
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// Ensure that a NUL is not required at the end of the string.
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EXPECT_TRUE(StringToNumber(base::StringPiece("66", 1), &output));
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EXPECT_EQ(output, 6);
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}
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TEST(StringNumberConversion, StringToUnsignedInt) {
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static constexpr struct {
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const char* string;
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bool valid;
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unsigned int value;
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} kTestData[] = {
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{"", false, 0},
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{"0", true, 0},
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{"1", true, 1},
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{"2147483647", true, 2147483647},
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{"2147483648", true, 2147483648},
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{"4294967295", true, std::numeric_limits<unsigned int>::max()},
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{"4294967296", false, 0},
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{"-1", false, 0},
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{"-2147483648", false, 0},
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{"-2147483649", false, 0},
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{"00", true, 0},
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{"01", true, 1},
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{"-01", false, 0},
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{"+2", true, 2},
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{"0x10", true, 16},
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{"-0x10", false, 0},
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{"+0x20", true, 32},
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{"0xf", true, 15},
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{"0xg", false, 0},
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{"0x7fffffff", true, 0x7fffffff},
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{"0x7FfFfFfF", true, 0x7fffffff},
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{"0x80000000", true, 0x80000000},
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{"0xFFFFFFFF", true, 0xffffffff},
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{"-0x7fffffff", false, 0},
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{"-0x80000000", false, 0},
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{"-0x80000001", false, 0},
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{"-0xffffffff", false, 0},
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{"0x100000000", false, 0},
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{"0xabcdef", true, 11259375},
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{"010", true, 8},
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{"-010", false, 0},
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{"+020", true, 16},
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{"07", true, 7},
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{"08", false, 0},
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{" 0", false, 0},
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{"0 ", false, 0},
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{" 0 ", false, 0},
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{" 1", false, 0},
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{"1 ", false, 0},
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{" 1 ", false, 0},
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{"a2", false, 0},
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{"2a", false, 0},
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{"2a2", false, 0},
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{".0", false, 0},
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{".1", false, 0},
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{"-.2", false, 0},
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{"+.3", false, 0},
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{"1.23", false, 0},
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{"-273.15", false, 0},
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{"+98.6", false, 0},
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{"1e1", false, 0},
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{"1E1", false, 0},
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{"0x123p4", false, 0},
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{"infinity", false, 0},
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{"NaN", false, 0},
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{"-9223372036854775810", false, 0},
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{"-9223372036854775809", false, 0},
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{"9223372036854775808", false, 0},
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{"9223372036854775809", false, 0},
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{"18446744073709551615", false, 0},
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{"18446744073709551616", false, 0},
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};
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for (size_t index = 0; index < arraysize(kTestData); ++index) {
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unsigned int value;
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bool valid = StringToNumber(kTestData[index].string, &value);
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if (kTestData[index].valid) {
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EXPECT_TRUE(valid) << "index " << index << ", string "
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<< kTestData[index].string;
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if (valid) {
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EXPECT_EQ(value, kTestData[index].value)
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<< "index " << index << ", string " << kTestData[index].string;
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}
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} else {
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EXPECT_FALSE(valid) << "index " << index << ", string "
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<< kTestData[index].string << ", value " << value;
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}
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}
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// Ensure that embedded NUL characters are treated as bad input. The string
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// is split to avoid MSVC warning:
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// "decimal digit terminates octal escape sequence".
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static constexpr char input[] = "6\000" "6";
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base::StringPiece input_string(input, arraysize(input) - 1);
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unsigned int output;
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EXPECT_FALSE(StringToNumber(input_string, &output));
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// Ensure that a NUL is not required at the end of the string.
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EXPECT_TRUE(StringToNumber(base::StringPiece("66", 1), &output));
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EXPECT_EQ(output, 6u);
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}
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TEST(StringNumberConversion, StringToInt64) {
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static constexpr struct {
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const char* string;
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bool valid;
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int64_t value;
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} kTestData[] = {
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{"", false, 0},
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{"0", true, 0},
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{"1", true, 1},
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{"2147483647", true, 2147483647},
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{"2147483648", true, 2147483648},
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{"4294967295", true, 4294967295},
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{"4294967296", true, 4294967296},
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{"9223372036854775807", true, std::numeric_limits<int64_t>::max()},
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{"9223372036854775808", false, 0},
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{"18446744073709551615", false, 0},
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{"18446744073709551616", false, 0},
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{"-1", true, -1},
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{"-2147483648", true, INT64_C(-2147483648)},
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{"-2147483649", true, INT64_C(-2147483649)},
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{"-9223372036854775808", true, std::numeric_limits<int64_t>::min()},
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{"-9223372036854775809", false, 0},
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{"0x7fffffffffffffff", true, std::numeric_limits<int64_t>::max()},
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{"0x8000000000000000", false, 0},
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{"0xffffffffffffffff", false, 0},
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{"0x10000000000000000", false, 0},
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{"-0x7fffffffffffffff", true, -9223372036854775807},
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{"-0x8000000000000000", true, std::numeric_limits<int64_t>::min()},
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{"-0x8000000000000001", false, 0},
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{"0x7Fffffffffffffff", true, std::numeric_limits<int64_t>::max()},
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};
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for (size_t index = 0; index < arraysize(kTestData); ++index) {
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int64_t value;
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bool valid = StringToNumber(kTestData[index].string, &value);
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if (kTestData[index].valid) {
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EXPECT_TRUE(valid) << "index " << index << ", string "
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<< kTestData[index].string;
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if (valid) {
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EXPECT_EQ(value, kTestData[index].value)
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<< "index " << index << ", string " << kTestData[index].string;
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}
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} else {
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EXPECT_FALSE(valid) << "index " << index << ", string "
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<< kTestData[index].string << ", value " << value;
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}
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}
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}
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TEST(StringNumberConversion, StringToUnsignedInt64) {
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static constexpr struct {
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const char* string;
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bool valid;
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uint64_t value;
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} kTestData[] = {
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{"", false, 0},
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{"0", true, 0},
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{"1", true, 1},
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{"2147483647", true, 2147483647},
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{"2147483648", true, 2147483648},
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{"4294967295", true, 4294967295},
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{"4294967296", true, 4294967296},
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{"9223372036854775807", true, 9223372036854775807},
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{"9223372036854775808", true, 9223372036854775808u},
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{"18446744073709551615", true, std::numeric_limits<uint64_t>::max()},
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{"18446744073709551616", false, 0},
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{"-1", false, 0},
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{"-2147483648", false, 0},
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{"-2147483649", false, 0},
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{"-2147483648", false, 0},
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{"-9223372036854775808", false, 0},
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{"-9223372036854775809", false, 0},
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{"0x7fffffffffffffff", true, 9223372036854775807},
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{"0x8000000000000000", true, 9223372036854775808u},
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{"0xffffffffffffffff", true, std::numeric_limits<uint64_t>::max()},
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{"0x10000000000000000", false, 0},
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{"-0x7fffffffffffffff", false, 0},
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{"-0x8000000000000000", false, 0},
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{"-0x8000000000000001", false, 0},
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{"0xFfffffffffffffff", true, std::numeric_limits<uint64_t>::max()},
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};
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for (size_t index = 0; index < arraysize(kTestData); ++index) {
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uint64_t value;
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bool valid = StringToNumber(kTestData[index].string, &value);
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if (kTestData[index].valid) {
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EXPECT_TRUE(valid) << "index " << index << ", string "
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<< kTestData[index].string;
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if (valid) {
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EXPECT_EQ(value, kTestData[index].value)
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<< "index " << index << ", string " << kTestData[index].string;
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}
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} else {
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EXPECT_FALSE(valid) << "index " << index << ", string "
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<< kTestData[index].string << ", value " << value;
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}
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}
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}
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} // namespace
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} // namespace test
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} // namespace crashpad
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