f1e0b83e7bPR-URL: https://github.com/nodejs/node/pull/61898 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Filip Skokan <panva.ip@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
// Copyright 2020 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef INCLUDE_SOURCE_LOCATION_H_
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#define INCLUDE_SOURCE_LOCATION_H_
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#include <cstddef>
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#include <source_location>
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#include <string>
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#include "v8config.h" // NOLINT(build/include_directory)
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#define V8_SUPPORTS_SOURCE_LOCATION 1
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namespace v8 {
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/**
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* Encapsulates source location information. Mimics C++20's
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* `std::source_location`.
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*/
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class V8_EXPORT SourceLocation final {
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public:
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/**
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* Constructs source location information corresponding to the location of the
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* call site.
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*/
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static constexpr SourceLocation Current(
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const std::source_location& loc = std::source_location::current()) {
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return SourceLocation(loc);
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}
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#ifdef DEBUG
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static constexpr SourceLocation CurrentIfDebug(
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const std::source_location& loc = std::source_location::current()) {
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return SourceLocation(loc);
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}
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#else
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static constexpr SourceLocation CurrentIfDebug() { return {}; }
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#endif
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/**
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* Constructs unspecified source location information.
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*/
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constexpr SourceLocation() = default;
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/**
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* Returns the name of the function associated with the position represented
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* by this object, if any.
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*
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* \returns the function name as cstring.
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*/
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constexpr const char* Function() const { return loc_.function_name(); }
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/**
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* Returns the name of the current source file represented by this object.
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*
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* \returns the file name as cstring.
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*/
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constexpr const char* FileName() const { return loc_.file_name(); }
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/**
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* Returns the line number represented by this object.
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*
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* \returns the line number.
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*/
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constexpr size_t Line() const { return loc_.line(); }
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/**
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* Returns a human-readable string representing this object.
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*
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* \returns a human-readable string representing source location information.
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*/
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std::string ToString() const;
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/**
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* Checks whether this object is initialized.
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*
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* \returns true if this object is initialized, false otherwise.
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*/
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operator bool() const { return loc_.line() != 0; }
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private:
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constexpr explicit SourceLocation(const std::source_location& loc)
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: loc_(loc) {}
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std::source_location loc_;
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};
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} // namespace v8
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#endif // INCLUDE_SOURCE_LOCATION_H_
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