a3c0bc572a
Bug: chromium:1056170 Change-Id: I89d0fbe6b73bf1b8765bb532fff58b1960fed09a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2235537 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Anton Bikineev <bikineev@chromium.org> Auto-Submit: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Anton Bikineev <bikineev@chromium.org> Cr-Commit-Position: refs/heads/master@{#68236}
92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
// Copyright 2020 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef INCLUDE_CPPGC_SOURCE_LOCATION_H_
|
|
#define INCLUDE_CPPGC_SOURCE_LOCATION_H_
|
|
|
|
#include <string>
|
|
|
|
#include "v8config.h" // NOLINT(build/include_directory)
|
|
|
|
#if defined(__has_builtin)
|
|
#define CPPGC_SUPPORTS_SOURCE_LOCATION \
|
|
(__has_builtin(__builtin_FUNCTION) && __has_builtin(__builtin_FILE) && \
|
|
__has_builtin(__builtin_LINE)) // NOLINT
|
|
#elif defined(V8_CC_GNU) && __GNUC__ >= 7
|
|
#define CPPGC_SUPPORTS_SOURCE_LOCATION 1
|
|
#elif defined(V8_CC_INTEL) && __ICC >= 1800
|
|
#define CPPGC_SUPPORTS_SOURCE_LOCATION 1
|
|
#else
|
|
#define CPPGC_SUPPORTS_SOURCE_LOCATION 0
|
|
#endif
|
|
|
|
namespace cppgc {
|
|
|
|
/**
|
|
* Encapsulates source location information. Mimics C++20's
|
|
* std::source_location.
|
|
*/
|
|
class V8_EXPORT SourceLocation final {
|
|
public:
|
|
/**
|
|
* Construct source location information corresponding to the location of the
|
|
* call site.
|
|
*/
|
|
#if CPPGC_SUPPORTS_SOURCE_LOCATION
|
|
static constexpr SourceLocation Current(
|
|
const char* function = __builtin_FUNCTION(),
|
|
const char* file = __builtin_FILE(), size_t line = __builtin_LINE()) {
|
|
return SourceLocation(function, file, line);
|
|
}
|
|
#else
|
|
static constexpr SourceLocation Current() { return SourceLocation(); }
|
|
#endif // CPPGC_SUPPORTS_SOURCE_LOCATION
|
|
|
|
/**
|
|
* Constructs unspecified source location information.
|
|
*/
|
|
constexpr SourceLocation() = default;
|
|
|
|
/**
|
|
* Returns the name of the function associated with the position represented
|
|
* by this object, if any.
|
|
*
|
|
* \returns the function name as cstring.
|
|
*/
|
|
constexpr const char* Function() const { return function_; }
|
|
|
|
/**
|
|
* Returns the name of the current source file represented by this object.
|
|
*
|
|
* \returns the file name as cstring.
|
|
*/
|
|
constexpr const char* FileName() const { return file_; }
|
|
|
|
/**
|
|
* Returns the line number represented by this object.
|
|
*
|
|
* \returns the line number.
|
|
*/
|
|
constexpr size_t Line() const { return line_; }
|
|
|
|
/**
|
|
* Returns a human-readable string representing this object.
|
|
*
|
|
* \returns a human-readable string representing source location information.
|
|
*/
|
|
std::string ToString() const;
|
|
|
|
private:
|
|
constexpr SourceLocation(const char* function, const char* file, size_t line)
|
|
: function_(function), file_(file), line_(line) {}
|
|
|
|
const char* function_ = nullptr;
|
|
const char* file_ = nullptr;
|
|
size_t line_ = 0u;
|
|
};
|
|
|
|
} // namespace cppgc
|
|
|
|
#endif // INCLUDE_CPPGC_SOURCE_LOCATION_H_
|