[apple/security.git] / libsecurity_codesigning / antlr2 / antlr / ParserSharedInputState.hpp

#ifndef INC_ParserSharedInputState_hpp__
#define INC_ParserSharedInputState_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/ParserSharedInputState.hpp#2 $
 */

#include <antlr/config.hpp>
#include <antlr/TokenBuffer.hpp>
#include <antlr/RefCount.hpp>
#include <string>

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif

/** This object contains the data associated with an
 * input stream of tokens.  Multiple parsers
 * share a single ParserSharedInputState to parse
 * the same stream of tokens.
 */
class ANTLR_API ParserInputState {
public:
	/** Construct a new ParserInputState
	 * @param in the TokenBuffer to read from. The object is deleted together
	 * with the ParserInputState object.
	 */
	ParserInputState( TokenBuffer* in )
	: guessing(0)
	, filename()
	, input(in)
	, inputResponsible(true)
	{
	}
	/** Construct a new ParserInputState
	 * @param in the TokenBuffer to read from.
	 */
	ParserInputState( TokenBuffer& in )
	: guessing(0)
	, filename("")
	, input(&in)
	, inputResponsible(false)
	{
	}

	virtual ~ParserInputState()
	{
		if (inputResponsible)
			delete input;
	}

	TokenBuffer& getInput( void )
	{
		return *input;
	}

	/// Reset the ParserInputState and the underlying TokenBuffer
	void reset( void )
	{
		input->reset();
		guessing = 0;
	}

public:
	/** Are we guessing (guessing>0)? */
	int guessing;
	/** What file (if known) caused the problem?
	 * @todo wrap this one..
	 */
	ANTLR_USE_NAMESPACE(std)string filename;
private:
	/** Where to get token objects */
	TokenBuffer* input;
	/// Do we need to free the TokenBuffer or is it owned by another..
	bool inputResponsible;

	// we don't want these:
	ParserInputState(const ParserInputState&);
	ParserInputState& operator=(const ParserInputState&);
};

/// A reference counted ParserInputState
typedef RefCount<ParserInputState> ParserSharedInputState;

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif

#endif //INC_ParserSharedInputState_hpp__
Commit	Line	Data
427c49bc A	1	#ifndef INC_ParserSharedInputState_hpp__
	2	#define INC_ParserSharedInputState_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/ParserSharedInputState.hpp#2 $
	9	*/
	10
	11	#include <antlr/config.hpp>
	12	#include <antlr/TokenBuffer.hpp>
	13	#include <antlr/RefCount.hpp>
	14	#include <string>
	15
	16	#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
	17	namespace antlr {
	18	#endif
	19
	20	/** This object contains the data associated with an
	21	* input stream of tokens. Multiple parsers
	22	* share a single ParserSharedInputState to parse
	23	* the same stream of tokens.
	24	*/
	25	class ANTLR_API ParserInputState {
	26	public:
	27	/** Construct a new ParserInputState
	28	* @param in the TokenBuffer to read from. The object is deleted together
	29	* with the ParserInputState object.
	30	*/
	31	ParserInputState( TokenBuffer* in )
	32	: guessing(0)
	33	, filename()
	34	, input(in)
	35	, inputResponsible(true)
	36	{
	37	}
	38	/** Construct a new ParserInputState
	39	* @param in the TokenBuffer to read from.
	40	*/
	41	ParserInputState( TokenBuffer& in )
	42	: guessing(0)
	43	, filename("")
	44	, input(&in)
	45	, inputResponsible(false)
	46	{
	47	}
	48
	49	virtual ~ParserInputState()
	50	{
	51	if (inputResponsible)
	52	delete input;
	53	}
	54
	55	TokenBuffer& getInput( void )
	56	{
	57	return *input;
	58	}
	59
	60	/// Reset the ParserInputState and the underlying TokenBuffer
	61	void reset( void )
	62	{
	63	input->reset();
	64	guessing = 0;
65	}
66
67	public:
68	/** Are we guessing (guessing>0)? */
69	int guessing;
70	/** What file (if known) caused the problem?
71	* @todo wrap this one..
72	*/
73	ANTLR_USE_NAMESPACE(std)string filename;
74	private:
75	/** Where to get token objects */
76	TokenBuffer* input;
77	/// Do we need to free the TokenBuffer or is it owned by another..
78	bool inputResponsible;
79
80	// we don't want these:
81	ParserInputState(const ParserInputState&);
82	ParserInputState& operator=(const ParserInputState&);
83	};
84
85	/// A reference counted ParserInputState
86	typedef RefCount<ParserInputState> ParserSharedInputState;
87
88	#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
89	}
90	#endif
91
92	#endif //INC_ParserSharedInputState_hpp__