--- lempar.c.orig	2020-01-10 14:08:55.225662130 +0100
+++ lempar.c	2020-01-10 14:31:25.891656998 +0100
@@ -251,12 +251,14 @@
 ** Outputs:
 ** None.
 */
+%namespace_begin
 void ParseTrace(FILE *TraceFILE, char *zTracePrompt){
   yyTraceFILE = TraceFILE;
   yyTracePrompt = zTracePrompt;
   if( yyTraceFILE==0 ) yyTracePrompt = 0;
   else if( yyTracePrompt==0 ) yyTraceFILE = 0;
 }
+%namespace_end
 #endif /* NDEBUG */
 
 #if defined(YYCOVERAGE) || !defined(NDEBUG)
@@ -320,6 +322,7 @@
 
 /* Initialize a new parser that has already been allocated.
 */
+%namespace_begin
 void ParseInit(void *yypRawParser ParseCTX_PDECL){
   yyParser *yypParser = (yyParser*)yypRawParser;
   ParseCTX_STORE
@@ -345,6 +348,7 @@
   yypParser->yystackEnd = &yypParser->yystack[YYSTACKDEPTH-1];
 #endif
 }
+%namespace_end
 
 #ifndef Parse_ENGINEALWAYSONSTACK
 /*
@@ -359,6 +363,7 @@
 ** A pointer to a parser.  This pointer is used in subsequent calls
 ** to Parse and ParseFree.
 */
+%namespace_begin
 void *ParseAlloc(void *(*mallocProc)(YYMALLOCARGTYPE) ParseCTX_PDECL){
   yyParser *yypParser;
   yypParser = (yyParser*)(*mallocProc)( (YYMALLOCARGTYPE)sizeof(yyParser) );
@@ -368,6 +373,7 @@
   }
   return (void*)yypParser;
 }
+%namespace_end
 #endif /* Parse_ENGINEALWAYSONSTACK */
 
 
@@ -427,6 +433,7 @@
 /*
 ** Clear all secondary memory allocations from the parser
 */
+%namespace_begin
 void ParseFinalize(void *p){
   yyParser *pParser = (yyParser*)p;
   while( pParser->yytos>pParser->yystack ) yy_pop_parser_stack(pParser);
@@ -434,6 +441,7 @@
   if( pParser->yystack!=&pParser->yystk0 ) free(pParser->yystack);
 #endif
 }
+%namespace_end
 
 #ifndef Parse_ENGINEALWAYSONSTACK
 /*
@@ -444,6 +452,7 @@
 ** is defined in a %include section of the input grammar) then it is
 ** assumed that the input pointer is never NULL.
 */
+%namespace_begin
 void ParseFree(
   void *p,                    /* The parser to be deleted */
   void (*freeProc)(void*)     /* Function used to reclaim memory */
@@ -454,16 +463,19 @@
   ParseFinalize(p);
   (*freeProc)(p);
 }
+%namespace_end
 #endif /* Parse_ENGINEALWAYSONSTACK */
 
 /*
 ** Return the peak depth of the stack for a parser.
 */
 #ifdef YYTRACKMAXSTACKDEPTH
+%namespace_begin
 int ParseStackPeak(void *p){
   yyParser *pParser = (yyParser*)p;
   return pParser->yyhwm;
 }
+%namespace_end
 #endif
 
 /* This array of booleans keeps track of the parser statement
@@ -484,6 +496,7 @@
 ** Return the number of missed state/lookahead combinations.
 */
 #if defined(YYCOVERAGE)
+%namespace_begin
 int ParseCoverage(FILE *out){
   int stateno, iLookAhead, i;
   int nMissed = 0;
@@ -501,6 +514,7 @@
   }
   return nMissed;
 }
+%namespace_end
 #endif
 
 /*
@@ -891,6 +905,7 @@
 ** Outputs:
 ** None.
 */
+%namespace_begin
 void Parse(
   void *yyp,                   /* The parser */
   int yymajor,                 /* The major token code number */
@@ -1060,11 +1075,13 @@
 #endif
   return;
 }
+%namespace_end
 
 /*
 ** Return the fallback token corresponding to canonical token iToken, or
 ** 0 if iToken has no fallback.
 */
+%namespace_begin
 int ParseFallback(int iToken){
 #ifdef YYFALLBACK
   assert( iToken<(int)(sizeof(yyFallback)/sizeof(yyFallback[0])) );
@@ -1074,3 +1091,4 @@
   return 0;
 #endif
 }
+%namespace_end