Add key mapping support

1 files changed, 45 insertions, 0 deletions

diff --git a/src/keymap_manager.cc b/src/keymap_manager.cc
new file mode 100644
index 00000000..71f936fd
--- /dev/null
+++ b/src/keymap_manager.cc
@@ -0,0 +1,45 @@
+#include "keymap_manager.hh"
+
+namespace std
+{
+
+template<> struct hash<Kakoune::KeymapMode>
+{
+    size_t operator()(Kakoune::KeymapMode val) const
+    {
+        return hash<int>{}((int)val);
+    }
+};
+
+}
+
+namespace Kakoune
+{
+
+void KeymapManager::map_key(Key key, KeymapMode mode, std::vector<Key> mapping)
+{
+    m_mapping[{key, mode}] = mapping;
+}
+
+void KeymapManager::unmap_key(Key key, KeymapMode mode)
+{
+    m_mapping.erase({key, mode});
+}
+
+
+bool KeymapManager::is_mapped(Key key, KeymapMode mode) const
+{
+    return m_mapping.find({key, mode}) != m_mapping.end() or
+           (m_parent and m_parent->is_mapped(key, mode));
+}
+
+memoryview<Key> KeymapManager::get_mapping(Key key, KeymapMode mode) const
+{
+    auto it = m_mapping.find({key, mode});
+    if (it != m_mapping.end())
+        return { it->second };
+    kak_assert(m_parent);
+    return m_parent->get_mapping(key, mode);
+}
+
+}