Added plugin for supporting the Nim programming language

The plugin support:
- basic syntax highlighting
- indentation
- project management
- run and build configuration
- debugging
- code style

Change-Id: Idfbb02a11ed570c90149a54b726beb956712e2bd
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/nim/project/nimcompilerbuildstepfactory.cpp

@@ -0,0 +1,111 @@
+/****************************************************************************
+**
+** Copyright (C) Filippo Cucchetto <filippocucchetto@gmail.com>
+** Contact: http://www.qt.io/licensing
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "project/nimcompilerbuildstepfactory.h"
+
+#include "nimconstants.h"
+#include "project/nimbuildconfiguration.h"
+#include "project/nimcompilerbuildstep.h"
+
+#include <projectexplorer/projectexplorerconstants.h>
+#include <utils/qtcassert.h>
+
+#include <memory>
+
+using namespace ProjectExplorer;
+
+namespace Nim {
+
+NimCompilerBuildStepFactory::NimCompilerBuildStepFactory(QObject *parent)
+    : IBuildStepFactory(parent)
+{}
+
+bool NimCompilerBuildStepFactory::canCreate(BuildStepList *parent, Core::Id id) const
+{
+    QTC_ASSERT(parent, return false);
+    if (parent->id() != ProjectExplorer::Constants::BUILDSTEPS_BUILD)
+        return false;
+    if (!qobject_cast<NimBuildConfiguration *>(parent->parent()))
+        return false;
+    return id == Constants::C_NIMCOMPILERBUILDSTEP_ID;
+}
+
+BuildStep *NimCompilerBuildStepFactory::create(BuildStepList *parent, Core::Id id)
+{
+    if (!canCreate(parent, id))
+        return nullptr;
+    return new NimCompilerBuildStep(parent);
+}
+
+bool NimCompilerBuildStepFactory::canClone(BuildStepList *parent, BuildStep *buildStep) const
+{
+    QTC_ASSERT(parent, return false);
+    QTC_ASSERT(buildStep, return false);
+    if (parent->id() != ProjectExplorer::Constants::BUILDSTEPS_BUILD)
+        return false;
+    if (!qobject_cast<NimBuildConfiguration *>(parent->parent()))
+        return false;
+    return buildStep->id() == Constants::C_NIMCOMPILERBUILDSTEP_ID;
+}
+
+BuildStep *NimCompilerBuildStepFactory::clone(BuildStepList *parent, BuildStep *buildStep)
+{
+    QTC_ASSERT(parent, return nullptr);
+    QTC_ASSERT(buildStep, return nullptr);
+    std::unique_ptr<NimCompilerBuildStep> result(new NimCompilerBuildStep(parent));
+    return result->fromMap(buildStep->toMap()) ? result.release() : nullptr;
+}
+
+bool NimCompilerBuildStepFactory::canRestore(BuildStepList *parent, const QVariantMap &map) const
+{
+    return canCreate(parent, idFromMap(map));
+}
+
+BuildStep *NimCompilerBuildStepFactory::restore(BuildStepList *parent, const QVariantMap &map)
+{
+    if (!canRestore(parent, map))
+        return nullptr;
+    std::unique_ptr<NimCompilerBuildStep> buildStep(new NimCompilerBuildStep(parent));
+    if (buildStep->fromMap(map))
+        return buildStep.release();
+    return nullptr;
+}
+
+QList<Core::Id> NimCompilerBuildStepFactory::availableCreationIds(BuildStepList *parent) const
+{
+    if (parent->id() == ProjectExplorer::Constants::BUILDSTEPS_BUILD)
+        if (auto bc = qobject_cast<NimBuildConfiguration *>(parent->parent()))
+            if (!bc->hasNimCompilerBuildStep())
+                return { Constants::C_NIMCOMPILERBUILDSTEP_ID };
+    return {};
+}
+
+QString NimCompilerBuildStepFactory::displayNameForId(Core::Id id) const
+{
+    return id == Constants::C_NIMCOMPILERBUILDSTEP_ID ? tr("Nim Compiler Build Step") : QString();
+}
+
+}
+