1#ifndef INC_LLkParser_hpp__
2#define INC_LLkParser_hpp__
3
4/* ANTLR Translator Generator
5 * Project led by Terence Parr at http://www.jGuru.com
6 * Software rights: http://www.antlr.org/license.html
7 *
8 * $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/LLkParser.hpp#2 $
9 */
10
11#include <antlr/config.hpp>
12#include <antlr/Parser.hpp>
13
14#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
15namespace antlr {
16#endif
17
18/**An LL(k) parser.
19 *
20 * @see antlr.Token
21 * @see antlr.TokenBuffer
22 * @see antlr.LL1Parser
23 */
24class ANTLR_API LLkParser : public Parser {
25public:
26	LLkParser(const ParserSharedInputState& lexer, int k_);
27
28	LLkParser(TokenBuffer& tokenBuf, int k_);
29
30	LLkParser(TokenStream& lexer, int k_);
31
32	/** Consume another token from the input stream.  Can only write sequentially!
33	 * If you need 3 tokens ahead, you must consume() 3 times.
34	 * <p>
35	 * Note that it is possible to overwrite tokens that have not been matched.
36	 * For example, calling consume() 3 times when k=2, means that the first token
37	 * consumed will be overwritten with the 3rd.
38	 */
39	virtual inline void consume()
40	{
41		inputState->getInput().consume();
42	}
43
44	virtual inline int LA(unsigned int i)
45	{
46		return inputState->getInput().LA(i);
47	}
48
49	virtual inline RefToken LT(unsigned int i)
50	{
51		return inputState->getInput().LT(i);
52	}
53protected:
54	/// the lookahead this LL(k) parser is using.
55	int k;
56private:
57	void trace(const char* ee, const char* rname);
58public:
59	virtual void traceIn(const char* rname);
60	virtual void traceOut(const char* rname);
61};
62
63#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
64}
65#endif
66
67#endif //INC_LLkParser_hpp__
68