src/ast/scope.cc

   1 #include <core/assert.hh>
   2 #include "scope.hh"
   3
   4 template class std::map<std::string, ast::Symbol>;
   5
   6 namespace ast
   7 {
   8   Scope::Scope()
   9     : symbols_(),
  10       parent_(0)
  11   {
  12   }
  13
  14   Symbol *
  15   Scope::findSymbol(const std::string & name) const
  16   {
  17     symbols_t::const_iterator it = symbols_.find(name);
  18     if (it == symbols_.end())
  19       return parent_ ? parent_->findSymbol(name) : 0;
  20     return it->second;
  21   }
  22
  23   bool
  24   Scope::addSymbol(Symbol * symbol)
  25   {
  26     assert(symbol);
  27     assert(!symbol->name.empty());
  28     assert(symbol->type);
  29     assert(symbol->address);
  30     if (symbols_.find(symbol->name) != symbols_.end())
  31       assert_msg(false, "multiple definition of the same variable");
  32     symbols_[symbol->name] = symbol;
  33     return true;
  34   }
  35 }