TokenStreamSelector.hpp

Go to the documentation of this file.

#ifndef INC_TokenStreamSelector_hpp__
#define INC_TokenStreamSelector_hpp__
 
/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/TokenStreamSelector.hpp#2 $
 */
 
#include <antlr/config.hpp>
#include <antlr/TokenStream.hpp>
#include <map>
#include <stack>
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif

class ANTLR_API TokenStreamSelector : public TokenStream {
protected:
#ifdef OS_NO_ALLOCATOR
   typedef ANTLR_USE_NAMESPACE(std)less<ANTLR_USE_NAMESPACE(std)string> lessp;
   typedef ANTLR_USE_NAMESPACE(std)map<ANTLR_USE_NAMESPACE(std)string,TokenStream*,lessp> inputStreamNames_coll;
#else
   typedef ANTLR_USE_NAMESPACE(std)map<ANTLR_USE_NAMESPACE(std)string,TokenStream*> inputStreamNames_coll;
#endif
   inputStreamNames_coll inputStreamNames;

   TokenStream* input;

#ifdef OS_NO_ALLOCATOR
   typedef ANTLR_USE_NAMESPACE(std)stack<TokenStream*, ANTLR_USE_NAMESPACE(std)deque<TokenStream*> > streamStack_coll;
#else
   typedef ANTLR_USE_NAMESPACE(std)stack<TokenStream*> streamStack_coll;
#endif
   streamStack_coll streamStack;
 
public:
   TokenStreamSelector();
   ~TokenStreamSelector();
 
   void addInputStream(TokenStream* stream, const ANTLR_USE_NAMESPACE(std)string& key);

   TokenStream* getCurrentStream() const;
 
   TokenStream* getStream(const ANTLR_USE_NAMESPACE(std)string& sname) const;
 
   RefToken nextToken();
 
   TokenStream* pop();
 
   void push(TokenStream* stream);
 
   void push(const ANTLR_USE_NAMESPACE(std)string& sname);

   void retry();

   void select(TokenStream* stream);
 
   void select(const ANTLR_USE_NAMESPACE(std)string& sname);
};
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
 
#endif //INC_TokenStreamSelector_hpp__