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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "cppprojectpartchooser.h"
#include <utils/algorithm.h>
#include <utils/qtcassert.h>
using namespace Utils;
namespace CppEditor::Internal {
class ProjectPartPrioritizer
{
public:
struct PrioritizedProjectPart
{
PrioritizedProjectPart(const ProjectPart::ConstPtr &projectPart, int priority)
: projectPart(projectPart), priority(priority) {}
ProjectPart::ConstPtr projectPart;
int priority = 0;
};
ProjectPartPrioritizer(const QList<ProjectPart::ConstPtr> &projectParts,
const QString &preferredProjectPartId,
const Utils::FilePath &activeProject,
Language languagePreference,
bool areProjectPartsFromDependencies)
: m_preferredProjectPartId(preferredProjectPartId)
, m_activeProject(activeProject)
, m_languagePreference(languagePreference)
{
// Prioritize
const QList<PrioritizedProjectPart> prioritized = prioritize(projectParts);
for (const PrioritizedProjectPart &ppp : prioritized)
m_info.projectParts << ppp.projectPart;
// Best project part
m_info.projectPart = m_info.projectParts.first();
// Hints
if (m_info.projectParts.size() > 1)
m_info.hints |= ProjectPartInfo::IsAmbiguousMatch;
if (prioritized.first().priority > 1000)
m_info.hints |= ProjectPartInfo::IsPreferredMatch;
if (areProjectPartsFromDependencies)
m_info.hints |= ProjectPartInfo::IsFromDependenciesMatch;
else
m_info.hints |= ProjectPartInfo::IsFromProjectMatch;
}
ProjectPartInfo info() const
{
return m_info;
}
private:
QList<PrioritizedProjectPart> prioritize(const QList<ProjectPart::ConstPtr> &projectParts) const
{
// Prioritize
QList<PrioritizedProjectPart> prioritized = Utils::transform(projectParts,
[&](const ProjectPart::ConstPtr &projectPart) {
return PrioritizedProjectPart{projectPart, priority(*projectPart)};
});
// Sort according to priority
const auto lessThan = [&] (const PrioritizedProjectPart &p1,
const PrioritizedProjectPart &p2) {
return p1.priority > p2.priority;
};
std::stable_sort(prioritized.begin(), prioritized.end(), lessThan);
return prioritized;
}
int priority(const ProjectPart &projectPart) const
{
int thePriority = 0;
if (!m_preferredProjectPartId.isEmpty() && projectPart.id() == m_preferredProjectPartId)
thePriority += 1000;
if (projectPart.belongsToProject(m_activeProject))
thePriority += 100;
if (projectPart.selectedForBuilding)
thePriority += 10;
if (isPreferredLanguage(projectPart))
thePriority += 1;
return thePriority;
}
bool isPreferredLanguage(const ProjectPart &projectPart) const
{
const bool isCProjectPart = projectPart.languageVersion <= LanguageVersion::LatestC;
return (m_languagePreference == Language::C && isCProjectPart)
|| (m_languagePreference == Language::Cxx && !isCProjectPart);
}
private:
const QString m_preferredProjectPartId;
const Utils::FilePath m_activeProject;
Language m_languagePreference = Language::Cxx;
// Results
ProjectPartInfo m_info;
};
ProjectPartInfo ProjectPartChooser::choose(const QString &filePath,
const ProjectPartInfo ¤tProjectPartInfo,
const QString &preferredProjectPartId,
const Utils::FilePath &activeProject,
Language languagePreference,
bool projectsUpdated) const
{
QTC_CHECK(m_projectPartsForFile);
QTC_CHECK(m_projectPartsFromDependenciesForFile);
QTC_CHECK(m_fallbackProjectPart);
ProjectPart::ConstPtr projectPart = currentProjectPartInfo.projectPart;
QList<ProjectPart::ConstPtr> projectParts = m_projectPartsForFile(filePath);
bool areProjectPartsFromDependencies = false;
if (projectParts.isEmpty()) {
if (!projectsUpdated && projectPart
&& currentProjectPartInfo.hints & ProjectPartInfo::IsFallbackMatch)
// Avoid re-calculating the expensive dependency table for non-project files.
return ProjectPartInfo(projectPart, {projectPart}, ProjectPartInfo::IsFallbackMatch);
// Fall-back step 1: Get some parts through the dependency table:
projectParts = m_projectPartsFromDependenciesForFile(filePath);
if (projectParts.isEmpty()) {
// Fall-back step 2: Use fall-back part from the model manager:
projectPart = m_fallbackProjectPart();
return ProjectPartInfo(projectPart, {projectPart}, ProjectPartInfo::IsFallbackMatch);
}
areProjectPartsFromDependencies = true;
}
return ProjectPartPrioritizer(projectParts,
preferredProjectPartId,
activeProject,
languagePreference,
areProjectPartsFromDependencies).info();
}
void ProjectPartChooser::setFallbackProjectPart(const FallBackProjectPart &getter)
{
m_fallbackProjectPart = getter;
}
void ProjectPartChooser::setProjectPartsForFile(const ProjectPartsForFile &getter)
{
m_projectPartsForFile = getter;
}
void ProjectPartChooser::setProjectPartsFromDependenciesForFile(
const ProjectPartsFromDependenciesForFile &getter)
{
m_projectPartsFromDependenciesForFile = getter;
}
} // namespace CppEditor::Internal
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