source: src/Parser/TypedefTable.h @ 4999940

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// TypedefTable.h -- 
//
// Author           : Rodolfo G. Esteves
// Created On       : Sat May 16 15:24:36 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Mon Aug 15 18:25:04 2016
// Update Count     : 28
//

#ifndef TYPEDEFTABLE_H
#define TYPEDEFTABLE_H

#include <map>
#include <list>
#include <string>
#include <stack>

#include "lex.h"
#include "parser.h"

class TypedefTable {
  public:
        enum kind_t { ID = IDENTIFIER, TD = TYPEDEFname, TG = TYPEGENname };
  private:
        struct Entry {
                int scope;
                kind_t kind;
        };
        
        struct DeferredEntry {
                std::string identifier;
                kind_t kind;
        };

        typedef std::map< std::string, std::list< Entry > > tableType;
        tableType table;

        int currentScope;
        std::string currentTrait;
        int contextScope;
        
        typedef std::list< DeferredEntry > deferListType;
        std::stack< deferListType > deferListStack;
        std::map< std::string, deferListType > contexts;
        
        std::stack< std::string > nextIdentifiers;

        void addToScope( const std::string &identifier, kind_t kind, int scope );
  public:
        TypedefTable();

        bool exists( const std::string &identifier );
        int isKind( const std::string &identifier ) const;
        void changeKind( const std::string &identifier, kind_t kind );

        void makeTypedef( const std::string &name );

        // "addToCurrentScope" adds the identifier/type pair to the current scope. This does less than you think it does,
        // since each declaration is within its own scope.  Mostly useful for type parameters.
        void addToCurrentScope( const std::string &identifier, kind_t kind );
        void addToCurrentScope( kind_t kind );                  // use nextIdentifiers.top()

        // "addToEnclosingScope" adds the identifier/type pair to the scope that encloses the current one.  This is the
        // right way to handle type and typedef names
        void addToEnclosingScope( const std::string &identifier, kind_t kind );
        void addToEnclosingScope( kind_t kind );                // use nextIdentifiers.top()
        
        // "addToEnclosingScope2" adds the identifier/type pair to the scope that encloses the scope enclosing the the
        // current one.  This is the right way to handle assertion names
        void addToEnclosingScope2( const std::string &identifier, kind_t kind );
        void addToEnclosingScope2( kind_t kind );               // use nextIdentifiers.top()
        
        // set the next identifier to be used by an "add" operation without an identifier parameter within the current scope
        void setNextIdentifier( const std::string &identifier );
        
        // dump the definitions from a pre-defined context into the current scope
        void openTrait( const std::string &contextName );
        
        void enterScope();
        void leaveScope();
        void enterTrait( const std::string &contextName );
        void leaveTrait();

        void print() const;
};

#endif // TYPEDEFTABLE_H

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //