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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#pragma once
#include "cmConfigure.h" // IWYU pragma: keep
#include <functional>
#include <map>
#include <set>
#include <string>
#include <vector>
#include <cm/optional>
#include <cmext/string_view>
enum class LookupMethod;
struct cmScanDepInfo;
enum class CxxModuleMapFormat
{
Clang,
Gcc,
Msvc,
};
struct CxxBmiLocation
{
static CxxBmiLocation Unknown();
static CxxBmiLocation Private();
static CxxBmiLocation Known(std::string path);
bool IsKnown() const;
bool IsPrivate() const;
std::string const& Location() const;
private:
CxxBmiLocation();
CxxBmiLocation(std::string path);
cm::optional<std::string> BmiLocation;
};
struct CxxModuleLocations
{
// The path from which all relative paths should be computed. If
// this is relative, it is relative to the compiler's working
// directory.
std::string RootDirectory;
// A function to convert a full path to a path for the generator.
std::function<std::string(std::string)> PathForGenerator;
// Lookup the BMI location of a logical module name.
std::function<CxxBmiLocation(std::string const&)> BmiLocationForModule;
// Returns the generator path (if known) for the BMI given a
// logical module name.
CxxBmiLocation BmiGeneratorPathForModule(
std::string const& logical_name) const;
};
struct CxxModuleReference
{
// The path to the module file used.
std::string Path;
// How the module was looked up.
LookupMethod Method;
};
struct CxxModuleUsage
{
// The usage requirements for this object.
std::map<std::string, std::set<std::string>> Usage;
// The references for this object.
std::map<std::string, CxxModuleReference> Reference;
// Add a reference to a module.
//
// Returns `true` if it matches how it was found previously, `false` if it
// conflicts.
bool AddReference(std::string const& logical, std::string const& loc,
LookupMethod method);
};
// Return the extension to use for a given modulemap format.
cm::static_string_view CxxModuleMapExtension(
cm::optional<CxxModuleMapFormat> format);
// Fill in module usage information for internal usages.
//
// Returns the set of unresolved module usage requirements (these form an
// import cycle).
std::set<std::string> CxxModuleUsageSeed(
CxxModuleLocations const& loc, std::vector<cmScanDepInfo> const& objects,
CxxModuleUsage& usages);
// Return the contents of the module map in the given format for the
// object file.
std::string CxxModuleMapContent(CxxModuleMapFormat format,
CxxModuleLocations const& loc,
cmScanDepInfo const& obj,
CxxModuleUsage const& usages);
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