mirror of
https://github.com/kidfromjupiter/nearby.git
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106 lines
4.4 KiB
C++
106 lines
4.4 KiB
C++
// Copyright 2020 Google LLC
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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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// https://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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#ifndef PLATFORM_BASE_LOGGING_H_
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#define PLATFORM_BASE_LOGGING_H_
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// base/logging.h is only included to allow logging clients to include CHECK's.
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// In Chrome this is base/check.h. See crbug/1212611.
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#ifdef NEARBY_CHROMIUM
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#include "base/check.h"
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// base/logging.h is available externally as "glog". However, this repo contains
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// template files that can't be built by Swift Package Manager. To build with
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// SPM we only need CHECK and DCHECK defined.
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#elif defined(NEARBY_SWIFTPM)
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#include <sstream>
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#define CHECK(condition) static_cast<void>(0), condition ? (void) 0 : abort()
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#define DCHECK(condition) static_cast<void>(0), (void) 0
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#define CHECK_GT(a, b) static_cast<void>(0), a > b ? (void) 0 : abort()
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#define DCHECK_GT(a, b) static_cast<void>(0), a > b ? (void) 0 : abort()
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#define CHECK_LE(a, b) static_cast<void>(0), a <= b ? (void) 0 : abort()
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#define DCHECK_LE(a, b) static_cast<void>(0), a <= b ? (void) 0 : abort()
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#define CHECK_NE(a, b) static_cast<void>(0), a != b ? (void) 0 : abort()
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#define DCHECK_NE(a, b) static_cast<void>(0), a != b ? (void) 0 : abort()
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#define CHECK_EQ(a, b) static_cast<void>(0), a == b ? (void) 0 : abort()
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#define DCHECK_EQ(a, b) static_cast<void>(0), a == b ? (void) 0 : abort()
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#define CHECK_GE(a, b) static_cast<void>(0), a >= b ? (void) 0 : abort()
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#define DCHECK_GE(a, b) static_cast<void>(0), a >= b ? (void) 0 : abort()
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#else
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// IWYU pragma: begin_exports
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#include "absl/log/check.h" // nogncheck
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#include "absl/log/log.h" // nogncheck
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// IWYU pragma: end_exports
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#endif
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#include "internal/platform/implementation/log_message.h"
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#include "internal/platform/implementation/platform.h"
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namespace nearby {
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// This class is used to explicitly ignore values in the conditional
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// logging macros. This avoids compiler warnings like "value computed
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// is not used" and "statement has no effect".
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class LogMessageVoidify {
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public:
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LogMessageVoidify() = default;
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// This has to be an operator with a precedence lower than << but
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// higher than ?:
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void operator&(std::ostream&) {}
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};
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} // namespace nearby
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// Severity enum conversion
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#define NEARBY_SEVERITY_VERBOSE nearby::api::LogMessage::Severity::kVerbose
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#define NEARBY_SEVERITY_INFO nearby::api::LogMessage::Severity::kInfo
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#define NEARBY_SEVERITY_WARNING nearby::api::LogMessage::Severity::kWarning
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#define NEARBY_SEVERITY_ERROR nearby::api::LogMessage::Severity::kError
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#define NEARBY_SEVERITY_FATAL nearby::api::LogMessage::Severity::kFatal
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#if defined(_WIN32)
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// wingdi.h defines ERROR to be 0. When we call LOG(ERROR), it gets substituted
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// with 0, and it expands to NEARBY_SEVERITY_0. To allow us to keep using this
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// syntax, we define this macro to do the same thing as NEARBY_SEVERITY_ERROR.
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#define NEARBY_SEVERITY_0 nearby::api::LogMessage::Severity::kError
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#endif // defined(_WIN32)
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#define NEARBY_SEVERITY(severity) NEARBY_SEVERITY_##severity
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// Log enabling
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#define NEARBY_LOG_IS_ON(severity) \
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nearby::api::LogMessage::ShouldCreateLogMessage(NEARBY_SEVERITY(severity))
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#define NEARBY_LOG_SET_SEVERITY(severity) \
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nearby::api::LogMessage::SetMinLogSeverity(NEARBY_SEVERITY(severity))
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// Log message creation
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#define NEARBY_LOG_MESSAGE(severity) \
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nearby::api::ImplementationPlatform::CreateLogMessage( \
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__FILE__, __LINE__, NEARBY_SEVERITY(severity))
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// Public APIs
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// The stream statement must come last or otherwise it won't compile.
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#define NEARBY_LOGS(severity) \
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!(NEARBY_LOG_IS_ON(severity)) \
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? (void)0 \
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: nearby::LogMessageVoidify() & NEARBY_LOG_MESSAGE(severity)->Stream()
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// DO NOT USE. Switch to NEARBY_LOGS() instead.
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#define NEARBY_LOG_OBSOLETE(severity, ...) \
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NEARBY_LOG_IS_ON(severity) \
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? NEARBY_LOG_MESSAGE(severity)->Print(__VA_ARGS__) : (void)0
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#ifdef NEARBY_SWIFTPM
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#define LOG(severity) NEARBY_LOGS(severity)
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#endif
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#endif // PLATFORM_BASE_LOGGING_H_
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