qdoc: Make Config a singleton

There is no need to pass a pointer to Config throughout
the API; the only instance of it is created in main()
so we can turn it into a singleton.

Having access to Config without API changes makes
implementation of configurable features easier.

Change-Id: Ida47e067865082dfe036a7a97f7f1ffc736db346
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/qdoc/clangcodeparser.cpp b/src/qdoc/clangcodeparser.cpp
index 5e04c344e..7d10ae089 100644
--- a/src/qdoc/clangcodeparser.cpp
+++ b/src/qdoc/clangcodeparser.cpp
@@ -1045,8 +1045,9 @@ ClangCodeParser::~ClangCodeParser()
   \a config. Call the initializeParser() in the base class.
   Get the defines list from the qdocconf database.
  */
-void ClangCodeParser::initializeParser(const Config &config)
+void ClangCodeParser::initializeParser()
 {
+    Config &config = Config::instance();
     printParsingErrors_ = 1;
     version_ = config.getString(CONFIG_VERSION);
     const auto args = config.getStringList(CONFIG_INCLUDEPATHS);
@@ -1069,7 +1070,7 @@ void ClangCodeParser::initializeParser(const Config &config)
                            path = fi.canonicalFilePath().toUtf8();
                        return path.prepend("-I");
                    });
-    CppCodeParser::initializeParser(config);
+    CppCodeParser::initializeParser();
     pchFileDir_.reset(nullptr);
     allHeaders_.clear();
     pchName_.clear();