symbol.cpp

   1 #include <frith/symbol_tree_node.hpp>
   2
   3 namespace frith
   4 {
   5         symbol_tree_entity::symbol_tree_entity()
   6         {
   7         }
   8
   9         symbol_tree_entity::symbol_tree_entity(symbol::type type):
  10                 type(type)
  11         {
  12                 switch(type)
  13                 {
  14                         case variable::variable:
  15                                 variable_pointer = new variable;
  16                                 break;
  17
  18                         case variable::function:
  19                                 function_pointer = new function;
  20                                 break;
  21
  22                         case variable::class_symbol:
  23                                 class_pointer = new class_type;
  24                                 break;
  25                 }
  26         }
  27
  28         symbol_tree_node::symbol_tree_node():
  29                 parent(0)
  30         {
  31         }
  32
  33         bool symbol_tree_node::exists(std::string const & name)
  34         {
  35                 scope_entities::iterator iterator = entities.find(name);
  36                 return iterator != entities.end();
  37         }
  38
  39         bool symbol_tree_node::find_entity(std::string const & name, symbol_tree_node * & entity_scope_output, symbol_tree_entity * & entity_output)
  40         {
  41                 scope_entities::iterator iterator = entities.find(name);
  42                 if(iterator == entities.end())
  43                 {
  44                         if(parent == 0)
  45                                 return false;
  46                         return parent->find_entity(name, entitiy_scope_output, entity_output);
  47                 }
  48
  49                 entity_scope_output = this;
  50                 entity_output = &iterator->second;
  51                 return true;
  52         }
  53 }