add an OptionManager class and use it to manage tabstops

OptionManager map names to options, and may delegate option resolution
to it's parent if it does not contains the asked for option. That way
Buffers can override global options, and Windows can override Buffer
options.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/buffer.hh b/src/buffer.hh
index 83e5ffc7..fb142aec 100644
--- a/src/buffer.hh
+++ b/src/buffer.hh
@@ -7,6 +7,7 @@
 #include <memory>
 
 #include "line_and_column.hh"
+#include "option_manager.hh"
 
 namespace Kakoune
 {
@@ -173,6 +174,8 @@ public:
 
     const String& line_content(size_t l) const { return m_lines[l].content; }
 
+    OptionManager& option_manager() { return m_option_manager; }
+
 private:
     friend class BufferIterator;
 
@@ -210,6 +213,8 @@ private:
     size_t m_last_save_undo_index;
 
     std::vector<ModificationListener*> m_modification_listeners;
+
+    OptionManager m_option_manager;
 };
 
 inline Modification Modification::make_erase(BufferIterator begin,