llvm/clang-tools-extra/clang-tidy/abseil/DurationFactoryScaleCheck.cpp

//===--- DurationFactoryScaleCheck.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 "DurationFactoryScaleCheck.h"
#include "DurationRewriter.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Tooling/FixIt.h"
#include <optional>

usingnamespaceclang::ast_matchers;

namespace clang::tidy::abseil {

// Given the name of a duration factory function, return the appropriate
// `DurationScale` for that factory.  If no factory can be found for
// `FactoryName`, return `std::nullopt`.
static std::optional<DurationScale>
getScaleForFactory(llvm::StringRef FactoryName) { … }

// Given either an integer or float literal, return its value.
// One and only one of `IntLit` and `FloatLit` should be provided.
static double getValue(const IntegerLiteral *IntLit,
                       const FloatingLiteral *FloatLit) { … }

// Given the scale of a duration and a `Multiplier`, determine if `Multiplier`
// would produce a new scale.  If so, return a tuple containing the new scale
// and a suitable Multiplier for that scale, otherwise `std::nullopt`.
static std::optional<std::tuple<DurationScale, double>>
getNewScaleSingleStep(DurationScale OldScale, double Multiplier) { … }

// Given the scale of a duration and a `Multiplier`, determine if `Multiplier`
// would produce a new scale.  If so, return it, otherwise `std::nullopt`.
static std::optional<DurationScale> getNewScale(DurationScale OldScale,
                                                double Multiplier) { … }

void DurationFactoryScaleCheck::registerMatchers(MatchFinder *Finder) { … }

void DurationFactoryScaleCheck::check(const MatchFinder::MatchResult &Result) { … }

} // namespace clang::tidy::abseil