remove unnecessary check for NULL pointer.

[mirror_edk2.git] / Tools / CCode / Source / Pccts / h / ATokenStream.h

/* ANTLRTokenStream.h\r
 *\r
 * SOFTWARE RIGHTS\r
 *\r
 * We reserve no LEGAL rights to the Purdue Compiler Construction Tool\r
 * Set (PCCTS) -- PCCTS is in the public domain.  An individual or\r
 * company may do whatever they wish with source code distributed with\r
 * PCCTS or the code generated by PCCTS, including the incorporation of\r
 * PCCTS, or its output, into commerical software.\r
 *\r
 * We encourage users to develop software with PCCTS.  However, we do ask\r
 * that credit is given to us for developing PCCTS.  By "credit",\r
 * we mean that if you incorporate our source code into one of your\r
 * programs (commercial product, research project, or otherwise) that you\r
 * acknowledge this fact somewhere in the documentation, research report,\r
 * etc...  If you like PCCTS and have developed a nice tool with the\r
 * output, please mention that you developed it using PCCTS.  In\r
 * addition, we ask that this header remain intact in our source code.\r
 * As long as these guidelines are kept, we expect to continue enhancing\r
 * this system and expect to make other tools available as they are\r
 * completed.\r
 *\r
 * ANTLR 1.33\r
 * Terence Parr\r
 * Parr Research Corporation\r
 * with Purdue University and AHPCRC, University of Minnesota\r
 * 1989-2000\r
 */\r
\r
#ifndef ATOKENSTREAM_H_GATE\r
#define ATOKENSTREAM_H_GATE\r
\r
#include "pcctscfg.h"\r
\r
/* This is really a behavior or protocol; it merely indicates the behavior\r
 * required of the input and output of an ANTLRTokenBuffer.  You could\r
 * subclass it, but you can also just pass any old pointer to ANTLRTokenBuffer\r
 * with a type cast (in which case, your getANTLRToken() would have to\r
 * explicitly cast the input pointer to your REAL type (typically your lexer)).\r
 */\r
\r
class ANTLRParser;							// MR1\r
\r
class DllExportPCCTS ANTLRTokenStream {\r
public:\r
    virtual _ANTLRTokenPtr getToken() = 0;\r
	virtual ANTLRParser * setParser(ANTLRParser * /*p MR23*/) {return 0; };   // MR12\r
	virtual ANTLRParser * getParser() { return 0; };		        // MR12\r
};\r
\r
#endif\r