Clang: Add BuildDependencyCollector

IncludeCollector is renamed to BuildDependencyCollector. It is now
returning a BuildDependency instead of individual getter. The test coverage
is improved too.

Task-number: QTCREATORBUG-21379
Change-Id: Ifc2d1c40c85772cf498c21968de526f4408b6023
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

1 files changed, 92 insertions, 0 deletions

diff --git a/src/tools/clangpchmanagerbackend/source/collectbuilddependencyaction.h b/src/tools/clangpchmanagerbackend/source/collectbuilddependencyaction.h
new file mode 100644
index 0000000000..ff861f174f
--- /dev/null
+++ b/src/tools/clangpchmanagerbackend/source/collectbuilddependencyaction.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <collectbuilddependencypreprocessorcallbacks.h>
+
+#include <filepathcachingfwd.h>
+#include <filepathid.h>
+
+#include <clang/Frontend/FrontendActions.h>
+#include <clang/Frontend/CompilerInstance.h>
+#include <clang/Lex/Preprocessor.h>
+
+namespace ClangBackEnd {
+
+class CollectBuildDependencyAction final : public clang::PreprocessOnlyAction
+{
+public:
+    CollectBuildDependencyAction(BuildDependency &buildDependency,
+                          const FilePathCachingInterface &filePathCache,
+                          std::vector<uint> &excludedIncludeUID,
+                          std::vector<uint> &alreadyIncludedFileUIDs,
+                          SourcesManager &sourcesManager)
+        : m_buildDependency(buildDependency),
+          m_filePathCache(filePathCache),
+          m_excludedIncludeUID(excludedIncludeUID),
+          m_alreadyIncludedFileUIDs(alreadyIncludedFileUIDs),
+          m_sourcesManager(sourcesManager)
+    {
+    }
+
+    bool BeginSourceFileAction(clang::CompilerInstance &compilerInstance) override
+    {
+      if (clang::PreprocessOnlyAction::BeginSourceFileAction(compilerInstance)) {
+          auto &preprocessor = compilerInstance.getPreprocessor();
+
+          preprocessor.SetSuppressIncludeNotFoundError(true);
+
+          auto macroPreprocessorCallbacks = new CollectBuildDependencyPreprocessorCallbacks(
+                      m_buildDependency,
+                      m_filePathCache,
+                      m_excludedIncludeUID,
+                      m_alreadyIncludedFileUIDs,
+                      compilerInstance.getSourceManager(),
+                      m_sourcesManager,
+                      compilerInstance.getPreprocessorPtr());
+
+          preprocessor.addPPCallbacks(std::unique_ptr<clang::PPCallbacks>(macroPreprocessorCallbacks));
+
+          return true;
+      }
+
+      return false;
+    }
+
+    void EndSourceFileAction() override
+    {
+      clang::PreprocessOnlyAction::EndSourceFileAction();
+    }
+
+private:
+    BuildDependency &m_buildDependency;
+    const FilePathCachingInterface &m_filePathCache;
+    std::vector<uint> &m_excludedIncludeUID;
+    std::vector<uint> &m_alreadyIncludedFileUIDs;
+    SourcesManager &m_sourcesManager;
+};
+
+} // namespace ClangBackEnd