Added emoji freevar

Strings of emojis are tokenized separately from anything else, and added to an emoticon freevar, which is mixed in with regular emoticons like :P. This breaks old-style freevars like $name$ and $noun$ so some legacy support for compatibility is left in but eventually $name$ should be made into an actual new freevar. Emoji data is from gemoji (https://github.com/github/gemoji).

1 files changed, 23 insertions, 0 deletions

@@ -0,0 +1,23 @@
+#ifndef PREFIX_SEARCH_H_5CFCF783
+#define PREFIX_SEARCH_H_5CFCF783
+
+#include <map>
+#include <string>
+
+class prefix_search {
+  public:
+    void add(std::string prefix);
+    int match(std::string in) const;
+    
+  private:
+    struct node {
+      std::map<int, struct node> children;
+      bool match;
+      
+      node() : match(false) {}
+    };
+    
+    node top;
+};
+
+#endif /* end of include guard: PREFIX_SEARCH_H_5CFCF783 */