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//===--- UseRangesCheck.cpp - clang-tidy ----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "UseRangesCheck.h"
#include "clang/AST/Decl.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include <initializer_list>
// FixItHint - Let the docs script know that this class does provide fixits
namespace clang::tidy::modernize {
static constexpr const char *SingleRangeNames[] = {
"all_of",
"any_of",
"none_of",
"for_each",
"find",
"find_if",
"find_if_not",
"adjacent_find",
"copy",
"copy_if",
"copy_backward",
"move",
"move_backward",
"fill",
"transform",
"replace",
"replace_if",
"generate",
"remove",
"remove_if",
"remove_copy",
"remove_copy_if",
"unique",
"unique_copy",
"sample",
"partition_point",
"lower_bound",
"upper_bound",
"equal_range",
"binary_search",
"push_heap",
"pop_heap",
"make_heap",
"sort_heap",
"next_permutation",
"prev_permutation",
"reverse",
"reverse_copy",
"shift_left",
"shift_right",
"is_partitioned",
"partition",
"partition_copy",
"stable_partition",
"sort",
"stable_sort",
"is_sorted",
"is_sorted_until",
"is_heap",
"is_heap_until",
"max_element",
"min_element",
"minmax_element",
"uninitialized_copy",
"uninitialized_fill",
"uninitialized_move",
"uninitialized_default_construct",
"uninitialized_value_construct",
"destroy",
};
static constexpr const char *TwoRangeNames[] = {
"equal",
"mismatch",
"partial_sort_copy",
"includes",
"set_union",
"set_intersection",
"set_difference",
"set_symmetric_difference",
"merge",
"lexicographical_compare",
"find_end",
"search",
"is_permutation",
};
static constexpr const char *SinglePivotRangeNames[] = {"rotate", "rotate_copy",
"inplace_merge"};
namespace {
class StdReplacer : public utils::UseRangesCheck::Replacer {
public:
explicit StdReplacer(SmallVector<UseRangesCheck::Signature> Signatures)
: Signatures(std::move(Signatures)) {}
std::optional<std::string>
getReplaceName(const NamedDecl &OriginalName) const override {
return ("std::ranges::" + OriginalName.getName()).str();
}
ArrayRef<UseRangesCheck::Signature>
getReplacementSignatures() const override {
return Signatures;
}
private:
SmallVector<UseRangesCheck::Signature> Signatures;
};
class StdAlgorithmReplacer : public StdReplacer {
using StdReplacer::StdReplacer;
std::optional<std::string>
getHeaderInclusion(const NamedDecl & /*OriginalName*/) const override {
return "<algorithm>";
}
};
class StdNumericReplacer : public StdReplacer {
using StdReplacer::StdReplacer;
std::optional<std::string>
getHeaderInclusion(const NamedDecl & /*OriginalName*/) const override {
return "<numeric>";
}
};
} // namespace
utils::UseRangesCheck::ReplacerMap UseRangesCheck::getReplacerMap() const {
utils::UseRangesCheck::ReplacerMap Result;
// template<typename Iter> Func(Iter first, Iter last,...).
static const Signature SingleRangeArgs = {{0}};
// template<typename Iter1, typename Iter2>
// Func(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2,...).
static const Signature TwoRangeArgs = {{0}, {2}};
// template<typename Iter> Func(Iter first, Iter pivot, Iter last,...).
static const Signature SinglePivotRange = {{0, 2}};
static const Signature SingleRangeFunc[] = {SingleRangeArgs};
static const Signature TwoRangeFunc[] = {TwoRangeArgs};
static const Signature SinglePivotFunc[] = {SinglePivotRange};
static const std::pair<ArrayRef<Signature>, ArrayRef<const char *>>
AlgorithmNames[] = {{SingleRangeFunc, SingleRangeNames},
{TwoRangeFunc, TwoRangeNames},
{SinglePivotFunc, SinglePivotRangeNames}};
SmallString<64> Buff;
for (const auto &[Signatures, Values] : AlgorithmNames) {
auto Replacer = llvm::makeIntrusiveRefCnt<StdAlgorithmReplacer>(
SmallVector<UseRangesCheck::Signature>{Signatures});
for (const auto &Name : Values) {
Buff.assign({"::std::", Name});
Result.try_emplace(Buff, Replacer);
}
}
if (getLangOpts().CPlusPlus23)
Result.try_emplace(
"::std::iota",
llvm::makeIntrusiveRefCnt<StdNumericReplacer>(
SmallVector<UseRangesCheck::Signature>{std::begin(SingleRangeFunc),
std::end(SingleRangeFunc)}));
return Result;
}
UseRangesCheck::UseRangesCheck(StringRef Name, ClangTidyContext *Context)
: utils::UseRangesCheck(Name, Context),
UseReversePipe(Options.get("UseReversePipe", false)) {}
void UseRangesCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
utils::UseRangesCheck::storeOptions(Opts);
Options.store(Opts, "UseReversePipe", UseReversePipe);
}
bool UseRangesCheck::isLanguageVersionSupported(
const LangOptions &LangOpts) const {
return LangOpts.CPlusPlus20;
}
ArrayRef<std::pair<StringRef, StringRef>>
UseRangesCheck::getFreeBeginEndMethods() const {
static const std::pair<StringRef, StringRef> Refs[] = {
{"::std::begin", "::std::end"}, {"::std::cbegin", "::std::cend"}};
return Refs;
}
std::optional<UseRangesCheck::ReverseIteratorDescriptor>
UseRangesCheck::getReverseDescriptor() const {
static const std::pair<StringRef, StringRef> Refs[] = {
{"::std::rbegin", "::std::rend"}, {"::std::crbegin", "::std::crend"}};
return ReverseIteratorDescriptor{UseReversePipe ? "std::views::reverse"
: "std::ranges::reverse_view",
"<ranges>", Refs, UseReversePipe};
}
} // namespace clang::tidy::modernize
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