LLkParser.cpp

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id$
 */
 
#include "antlr/LLkParser.hpp"
#include <iostream>
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
 
ANTLR_USING_NAMESPACE(std)
 
/**An LL(k) parser.
 *
 * @see antlr.Token
 * @see antlr.TokenBuffer
 * @see antlr.LL1Parser
 */
 
//      LLkParser(int k_);
 
LLkParser::LLkParser(const ParserSharedInputState& state, int k_)
: Parser(state), k(k_)
{
}
 
LLkParser::LLkParser(TokenBuffer& tokenBuf, int k_)
: Parser(tokenBuf), k(k_)
{
}
 
LLkParser::LLkParser(TokenStream& lexer, int k_)
: Parser(new TokenBuffer(lexer)), k(k_)
{
}
 
void LLkParser::trace(const char* ee, const char* rname)
{
        traceIndent();
 
        cout << ee << rname << ((inputState->guessing>0)?"; [guessing]":"; ");
 
        for (int i = 1; i <= k; i++)
        {
                if (i != 1) {
                        cout << ", ";
                }
                cout << "LA(" << i << ")==";
 
                string temp;
 
                try {
                        temp = LT(i)->getText().c_str();
                }
                catch( ANTLRException& ae )
                {
                        temp = "[error: ";
                        temp += ae.toString();
                        temp += ']';
                }
                cout << temp;
        }
 
        cout << endl;
}
 
void LLkParser::traceIn(const char* rname)
{
        traceDepth++;
        trace("> ",rname);
}
 
void LLkParser::traceOut(const char* rname)
{
        trace("< ",rname);
        traceDepth--;
}
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif