qt-creator/src/plugins/cpptools/cppprojectpartchooser.cpp

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#include "cppprojectpartchooser.h"

#include <utils/algorithm.h>
#include <utils/qtcassert.h>

namespace CppTools {
namespace Internal {

static ProjectPart::Ptr selectFromActiveProject(const QList<ProjectPart::Ptr> &projectParts,
                                                const ProjectExplorer::Project *activeProject)
{
    return Utils::findOr(projectParts, projectParts.first(), [&](const ProjectPart::Ptr &projectPart){
        return projectPart->project == activeProject;
    });
}

ProjectPart::Ptr ProjectPartChooser::choose(const QString &filePath,
                                            const ProjectPart::Ptr &currentProjectPart,
                                            const ProjectPart::Ptr &manuallySetProjectPart,
                                            bool stickToPreviousProjectPart,
                                            const ProjectExplorer::Project *activeProject) const
{
    QTC_CHECK(m_projectPartsForFile);
    QTC_CHECK(m_projectPartsFromDependenciesForFile);
    QTC_CHECK(m_fallbackProjectPart);

    if (manuallySetProjectPart)
        return manuallySetProjectPart;

    ProjectPart::Ptr projectPart = currentProjectPart;

    QList<ProjectPart::Ptr> projectParts = m_projectPartsForFile(filePath);
    if (projectParts.isEmpty()) {
        if (projectPart && stickToPreviousProjectPart)
            // File is not directly part of any project, but we got one before. We will re-use it,
            // because re-calculating this can be expensive when the dependency table is big.
            return projectPart;

        // 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();
        else
            projectPart = selectFromActiveProject(projectParts, activeProject);
    } else {
        if (!projectParts.contains(projectPart))
            // Apparently the project file changed, so update our project part.
            projectPart = selectFromActiveProject(projectParts, activeProject);
    }

    return projectPart;
}

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 Internal
} // namespace CppTools