auto commit for import

[pccts] / h / DLexer.cpp

diff --git a/h/DLexer.cpp b/h/DLexer.cpp
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+/* DLexer.c
+ *
+ * SOFTWARE RIGHTS
+ *
+ * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
+ * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
+ * company may do whatever they wish with source code distributed with
+ * PCCTS or the code generated by PCCTS, including the incorporation of
+ * PCCTS, or its output, into commerical software.
+ * 
+ * We encourage users to develop software with PCCTS.  However, we do ask
+ * that credit is given to us for developing PCCTS.  By "credit",
+ * we mean that if you incorporate our source code into one of your
+ * programs (commercial product, research project, or otherwise) that you
+ * acknowledge this fact somewhere in the documentation, research report,
+ * etc...  If you like PCCTS and have developed a nice tool with the
+ * output, please mention that you developed it using PCCTS.  In
+ * addition, we ask that this header remain intact in our source code.
+ * As long as these guidelines are kept, we expect to continue enhancing
+ * this system and expect to make other tools available as they are
+ * completed.
+ *
+ * ANTLR 1.33
+ * Terence Parr
+ * Parr Research Corporation
+ * with Purdue University and AHPCRC, University of Minnesota
+ * 1989-1995
+ */
+#define ZZINC {if ( track_columns ) (++_endcol);}
+
+#define ZZGETC {ch = input->nextChar(); cl = ZZSHIFT(ch);}
+
+#define ZZNEWSTATE     (newstate = dfa[state][cl])
+
+#ifndef ZZCOPY
+#define ZZCOPY \
+       /* Truncate matching buffer to size (not an error) */   \
+       if (nextpos < lastpos){                         \
+               *(nextpos++) = ch;                      \
+       }else{                                                  \
+               bufovf = 1;                                     \
+       }
+#endif
+
+void DLGLexer::
+mode( int m )
+{
+       /* points to base of dfa table */
+       if (m<MAX_MODE){
+               automaton = m;
+               /* have to redo class since using different compression */
+               cl = ZZSHIFT(ch);
+       }else{
+               sprintf((char *)ebuf,"Invalid automaton mode = %d ",m);
+               errstd(ebuf);
+       }
+}
+
+ANTLRTokenType DLGLexer::
+nextTokenType(void)
+{
+       register int state, newstate;
+       /* last space reserved for the null char */
+       register DLGChar *lastpos;
+       ANTLRTokenType tk;
+
+skip:
+       bufovf = 0;
+       lastpos = &_lextext[_bufsize-1];
+       nextpos = _lextext;
+       _begcol = _endcol+1;
+more:
+       _begexpr = nextpos;
+       if ( interactive ) {
+               /* interactive version of automaton */
+               /* if there is something in ch, process it */
+               state = newstate = dfa_base[automaton];
+               if (charfull){
+                       ZZINC;
+                       ZZCOPY;
+                       ZZNEWSTATE;
+               }
+               while (alternatives[newstate]){
+                       state = newstate;
+                       ZZGETC;
+                       ZZINC;
+                       ZZCOPY;
+                       ZZNEWSTATE;
+               }
+               /* figure out if last character really part of token */
+               if ((state != dfa_base[automaton]) && (newstate == DfaStates)){
+                       charfull = 1;
+                       --nextpos;
+               }else{
+                       charfull = 0;
+                       state = newstate;
+               }
+               *(nextpos) = '\0';
+               /* Able to transition out of start state to some non err state?*/
+               if ( state == dfa_base[automaton] ){
+                       /* make sure doesn't get stuck */
+                       advance();
+               }
+       }
+       else { /* non-interactive version of automaton */
+               if (!charfull)
+                       advance();
+               else
+                       ZZINC;
+               state = dfa_base[automaton];
+               while (ZZNEWSTATE != DfaStates) {
+                       state = newstate;
+                       ZZCOPY;
+                       ZZGETC;
+                       ZZINC;
+               }
+               charfull = 1;
+               if ( state == dfa_base[automaton] ){
+                       if (nextpos < lastpos){
+                               *(nextpos++) = ch;
+                       }else{
+                               bufovf = 1;
+                       }
+                       *nextpos = '\0';
+                       /* make sure doesn't get stuck */
+                       advance();
+               }else{
+                       *nextpos = '\0';
+               }
+       }
+       if ( track_columns ) _endcol -= charfull;
+       _endexpr = nextpos -1;
+       add_erase = 0;
+#ifdef OLD
+       tk = (ANTLRTokenType)
+                (*actions[accepts[state]])(this);      // must pass this manually
+                                                                                       // actions is not a [] of pointers
+                                                                                       // to member functions.
+#endif
+       tk = (this->*actions[accepts[state]])();
+       switch (add_erase) {
+               case 1: goto skip;
+               case 2: goto more;
+       }
+       return tk;
+}
+
+void DLGLexer::
+advance()
+{
+       if ( input==NULL ) err_in();
+       ZZGETC; charfull = 1; ZZINC;
+}