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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#pragma once
#include "cmConfigure.h" // IWYU pragma: keep
#include <memory>
#include <set>
#include <string>
#include <cm/optional>
#include "cmStack.h"
class cmMakefile;
/**
* This data represents the actual contents of find_package
* <PACKAGE>-Config.cmake or <PACKAGE>.cps file, and not what is passed
* to the find_package command. They can be the same, but it is not guaranteed.
*/
class cmPackageInformation
{
public:
cm::optional<std::string> Directory;
cm::optional<std::string> Version;
cm::optional<std::string> Description;
cm::optional<std::string> License;
cm::optional<std::string> Website;
cm::optional<std::string> PackageUrl;
std::set<std::string> Components;
};
/**
* Represents one call to find_package.
*/
class cmFindPackageCall
{
public:
std::string const Name;
cmPackageInformation PackageInfo;
unsigned int Index;
};
/**
* RAII type to manage the find_package call stack.
*/
// Note: implemented in cmMakefile.cxx
class cmFindPackageStackRAII
{
cmMakefile* Makefile;
cmPackageInformation** Value = nullptr;
public:
cmFindPackageStackRAII(cmMakefile* mf, std::string const& pkg);
~cmFindPackageStackRAII();
cmFindPackageStackRAII(cmFindPackageStackRAII const&) = delete;
cmFindPackageStackRAII& operator=(cmFindPackageStackRAII const&) = delete;
/** Get a mutable pointer to the top of the stack.
The pointer is invalidated if BindTop is called again or when the
cmFindPackageStackRAII goes out of scope. */
void BindTop(cmPackageInformation*& value);
};
/**
* Represents a stack of find_package calls with efficient value semantics.
*/
class cmFindPackageStack
: protected cmStack<cmFindPackageCall, cmFindPackageStack>
{
using cmStack::cmStack;
friend cmFindPackageStack::Base;
friend class cmFindPackageStackRAII;
public:
using cmStack::Push;
using cmStack::Pop;
using cmStack::Empty;
cmFindPackageCall const& Top() const;
};
#ifndef cmFindPackageStack_cxx
extern template class cmStack<cmFindPackageCall, cmFindPackageStack>;
extern template cmFindPackageCall&
cmStack<cmFindPackageCall, cmFindPackageStack>::Top<true>();
#endif
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