Refactor filter and highlighter registry into a common template

1 files changed, 46 insertions, 0 deletions

diff --git a/src/function_registry.hh b/src/function_registry.hh
new file mode 100644
index 00000000..058c4aa3
--- /dev/null
+++ b/src/function_registry.hh
@@ -0,0 +1,46 @@
+#ifndef function_registry_h_INCLUDED
+#define function_registry_h_INCLUDED
+
+#include "string.hh"
+#include "completion.hh"
+#include "idvaluemap.hh"
+
+namespace Kakoune
+{
+
+struct function_not_found : runtime_error
+{
+    function_not_found(const String& name)
+        : runtime_error("'" + name + "' not found") {}
+};
+
+template<typename FunctionType>
+class FunctionRegistry
+{
+public:
+    void register_func(const String& name, const FunctionType& function)
+    {
+        assert(not m_functions.contains(name));
+        m_functions.append(std::make_pair(name, function));
+    }
+
+    const FunctionType& operator[](const String& name) const
+    {
+        auto it = m_functions.find(name);
+        if (it == m_functions.end())
+            throw function_not_found(name);
+        return it->second;
+    }
+
+    CandidateList complete_name(const String& prefix, ByteCount cursor_pos)
+    {
+        return m_functions.complete_id(prefix, cursor_pos);
+    }
+
+private:
+    idvaluemap<String, FunctionType> m_functions;
+};
+
+}
+
+#endif // function_registry_h_INCLUDED