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Extract make metric name from ranking metric. (#8768)

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- Extract the metric parsing routine from ranking.
- Add a test.
- Accept null for string view.
This commit is contained in:
Jiaming Yuan
2023-02-09 18:30:21 +08:00
committed by GitHub
parent 4ead65a28c
commit 5f76edd296
9 changed files with 142 additions and 34 deletions
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30
include/xgboost/string_view.h
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@@ -1,15 +1,15 @@
/*!
* Copyright 2021 by XGBoost Contributors
/**
* Copyright 2021-2023 by XGBoost Contributors
*/
#ifndef XGBOOST_STRING_VIEW_H_
#define XGBOOST_STRING_VIEW_H_
#include <xgboost/logging.h>
#include <xgboost/span.h>
#include <xgboost/logging.h> // CHECK_LT
#include <xgboost/span.h> // Span
#include <algorithm>
#include <iterator>
#include <ostream>
#include <string>
#include <algorithm> // std::equal,std::min
#include <iterator> // std::reverse_iterator
#include <ostream> // std::ostream
#include <string> // std::char_traits,std::string
namespace xgboost {
struct StringView {
@@ -28,29 +28,31 @@ struct StringView {
public:
constexpr StringView() = default;
constexpr StringView(CharT const* str, size_t size) : str_{str}, size_{size} {}
constexpr StringView(CharT const* str, std::size_t size) : str_{str}, size_{size} {}
explicit StringView(std::string const& str) : str_{str.c_str()}, size_{str.size()} {}
StringView(CharT const* str) : str_{str}, size_{Traits::length(str)} {} // NOLINT
constexpr StringView(CharT const* str) // NOLINT
: str_{str}, size_{str == nullptr ? 0ul : Traits::length(str)} {}
CharT const& operator[](size_t p) const { return str_[p]; }
CharT const& at(size_t p) const { // NOLINT
CHECK_LT(p, size_);
return str_[p];
}
constexpr size_t size() const { return size_; } // NOLINT
StringView substr(size_t beg, size_t n) const { // NOLINT
constexpr std::size_t size() const { return size_; } // NOLINT
constexpr bool empty() const { return size() == 0; } // NOLINT
StringView substr(size_t beg, size_t n) const { // NOLINT
CHECK_LE(beg, size_);
size_t len = std::min(n, size_ - beg);
return {str_ + beg, len};
}
CharT const* c_str() const { return str_; } // NOLINT
CharT const* c_str() const { return str_; } // NOLINT
constexpr CharT const* cbegin() const { return str_; } // NOLINT
constexpr CharT const* cend() const { return str_ + size(); } // NOLINT
constexpr CharT const* begin() const { return str_; } // NOLINT
constexpr CharT const* end() const { return str_ + size(); } // NOLINT
const_reverse_iterator rbegin() const noexcept { // NOLINT
const_reverse_iterator rbegin() const noexcept { // NOLINT
return const_reverse_iterator(this->end());
}
const_reverse_iterator crbegin() const noexcept { // NOLINT