Meson: Flatten directory hierarchy

Keep tests/ and icons/ but put the rest into the toplevel.

The previous setup was so different from the rest of the bunch that
it regularly stuck out in maintenance tasks.

Change-Id: I69821be6268f69682353a388f6bb1fa343215303
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/mesonprojectmanager/mesonbuildconfiguration.h

@@ -0,0 +1,110 @@
+// Copyright (C) 2020 Alexis Jeandet.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
+#pragma once
+
+#include "projectexplorer/buildconfiguration.h"
+#include "projectexplorer/target.h"
+
+namespace MesonProjectManager {
+namespace Internal {
+
+enum class MesonBuildType { plain, debug, debugoptimized, release, minsize, custom };
+
+const QHash<QString, MesonBuildType> buildTypesByName = {{"plain", MesonBuildType::plain},
+                                                         {"debug", MesonBuildType::debug},
+                                                         {"debugoptimized",
+                                                          MesonBuildType::debugoptimized},
+                                                         {"release", MesonBuildType::release},
+                                                         {"minsize", MesonBuildType::minsize},
+                                                         {"custom", MesonBuildType::custom}};
+
+inline QString mesonBuildTypeName(MesonBuildType type)
+{
+    return buildTypesByName.key(type, "custom");
+}
+
+inline QString mesonBuildTypeDisplayName(MesonBuildType type)
+{
+    switch (type) {
+    case MesonBuildType::plain:
+        return {"Plain"};
+    case MesonBuildType::debug:
+        return {"Debug"};
+    case MesonBuildType::debugoptimized:
+        return {"Debug With Optimizations"};
+    case MesonBuildType::release:
+        return {"Release"};
+    case MesonBuildType::minsize:
+        return {"Minimum Size"};
+    default:
+        return {"Custom"};
+    }
+}
+
+inline MesonBuildType mesonBuildType(const QString &typeName)
+{
+    return buildTypesByName.value(typeName, MesonBuildType::custom);
+}
+
+inline ProjectExplorer::BuildConfiguration::BuildType buildType(MesonBuildType type)
+{
+    switch (type) {
+    case MesonBuildType::plain:
+        return ProjectExplorer::BuildConfiguration::Unknown;
+    case MesonBuildType::debug:
+        return ProjectExplorer::BuildConfiguration::Debug;
+    case MesonBuildType::debugoptimized:
+        return ProjectExplorer::BuildConfiguration::Profile;
+    case MesonBuildType::release:
+        return ProjectExplorer::BuildConfiguration::Release;
+    case MesonBuildType::minsize:
+        return ProjectExplorer::BuildConfiguration::Release;
+    default:
+        return ProjectExplorer::BuildConfiguration::Unknown;
+    }
+}
+
+class MesonBuildSystem;
+class MesonTools;
+
+class MesonBuildConfiguration final : public ProjectExplorer::BuildConfiguration
+{
+    Q_OBJECT
+public:
+    MesonBuildConfiguration(ProjectExplorer::Target *target, Utils::Id id);
+    ~MesonBuildConfiguration() final;
+
+    static Utils::FilePath shadowBuildDirectory(
+        const Utils::FilePath &projectFilePath,
+        const ProjectExplorer::Kit *k,
+        const QString &bcName,
+        ProjectExplorer::BuildConfiguration::BuildType buildType);
+
+    ProjectExplorer::BuildSystem *buildSystem() const final;
+    void build(const QString &target);
+
+    QStringList mesonConfigArgs();
+
+    const QString &parameters() const;
+    void setParameters(const QString &params);
+
+signals:
+    void parametersChanged();
+
+private:
+    QVariantMap toMap() const override;
+    bool fromMap(const QVariantMap &map) override;
+    MesonBuildType m_buildType;
+    ProjectExplorer::NamedWidget *createConfigWidget() final;
+    MesonBuildSystem *m_buildSystem = nullptr;
+    QString m_parameters;
+};
+
+class MesonBuildConfigurationFactory final : public ProjectExplorer::BuildConfigurationFactory
+{
+public:
+    MesonBuildConfigurationFactory();
+};
+
+} // namespace Internal
+} // namespace MesonProjectManager