Parser: Flex Prefix (ECP-WarpX#1615)

* Parser: Flex Prefix Add a prefix to all flex symbols in the parser. This ensures that in builds with complex dependencies, which might also use flex for their own purposes, no symbol collisions occur. * Parser: Flex Rebuild * Flex Prefix: Update Parser Usage * Parser: Fix prefixes * Parser: Flex Rebuild Co-authored-by: Weiqun Zhang <weiqunzhang@lbl.gov>
dpgrote · Jan 14, 2021 · 6f7e6f2 · 6f7e6f2
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diff --git a/Source/Parser/wp_parser.l b/Source/Parser/wp_parser.l
@@ -6,6 +6,7 @@
 %}
 
 %option nounput
+%option prefix="wxparser"
 
  /* Tokens NUMBER, SYMBOL, F1, POW, F2, etc. are defined in wp_parser.y. */
  /* Types WP_SQRT, WP_SQRT, etc. are defined in wp_parser_y.h. */
@@ -25,45 +26,45 @@ EXP	([Ee][-+]?[0-9]+)
 "<" |
 ">" |
 "(" |
-")"     { return yytext[0]; } /* simply pass through */
+")"     { return wxparsertext[0]; } /* simply pass through */
 
- /* yylval is union type defined in wp_parser.tab.h that is generated
+ /* wxparserlval is union type defined in wp_parser.tab.h that is generated
   * by bison with wp_parser.y */
 
-"sqrt"        { yylval.f1 = WP_SQRT;      return F1; }
-"exp"         { yylval.f1 = WP_EXP;       return F1; }
-"log"         { yylval.f1 = WP_LOG;       return F1; }
-"log10"       { yylval.f1 = WP_LOG10;     return F1; }
-"sin"         { yylval.f1 = WP_SIN;       return F1; }
-"cos"         { yylval.f1 = WP_COS;       return F1; }
-"tan"         { yylval.f1 = WP_TAN;       return F1; }
-"asin"        { yylval.f1 = WP_ASIN;      return F1; }
-"acos"        { yylval.f1 = WP_ACOS;      return F1; }
-"atan"        { yylval.f1 = WP_ATAN;      return F1; }
-"sinh"        { yylval.f1 = WP_SINH;      return F1; }
-"cosh"        { yylval.f1 = WP_COSH;      return F1; }
-"tanh"        { yylval.f1 = WP_TANH;      return F1; }
-"abs"         { yylval.f1 = WP_ABS;       return F1; }
-"fabs"        { yylval.f1 = WP_ABS;       return F1; }
-"**"          { yylval.f2 = WP_POW;       return POW;}
-"^"           { yylval.f2 = WP_POW;       return POW;}
-">="          { yylval.f2 = WP_GEQ;       return GEQ;}
-"<="          { yylval.f2 = WP_LEQ;       return LEQ;}
-"=="          { yylval.f2 = WP_EQ;        return EQ;}
-"!="          { yylval.f2 = WP_NEQ;       return NEQ;}
-"and"         { yylval.f2 = WP_AND;       return AND;}
-"or"          { yylval.f2 = WP_OR;        return OR;}
-"pow"         { yylval.f2 = WP_POW;       return F2; }
-"heaviside"   { yylval.f2 = WP_HEAVISIDE; return F2; }
-"min"         { yylval.f2 = WP_MIN;       return F2; }
-"max"         { yylval.f2 = WP_MAX;       return F2; }
+"sqrt"        { wxparserlval.f1 = WP_SQRT;      return F1; }
+"exp"         { wxparserlval.f1 = WP_EXP;       return F1; }
+"log"         { wxparserlval.f1 = WP_LOG;       return F1; }
+"log10"       { wxparserlval.f1 = WP_LOG10;     return F1; }
+"sin"         { wxparserlval.f1 = WP_SIN;       return F1; }
+"cos"         { wxparserlval.f1 = WP_COS;       return F1; }
+"tan"         { wxparserlval.f1 = WP_TAN;       return F1; }
+"asin"        { wxparserlval.f1 = WP_ASIN;      return F1; }
+"acos"        { wxparserlval.f1 = WP_ACOS;      return F1; }
+"atan"        { wxparserlval.f1 = WP_ATAN;      return F1; }
+"sinh"        { wxparserlval.f1 = WP_SINH;      return F1; }
+"cosh"        { wxparserlval.f1 = WP_COSH;      return F1; }
+"tanh"        { wxparserlval.f1 = WP_TANH;      return F1; }
+"abs"         { wxparserlval.f1 = WP_ABS;       return F1; }
+"fabs"        { wxparserlval.f1 = WP_ABS;       return F1; }
+"**"          { wxparserlval.f2 = WP_POW;       return POW;}
+"^"           { wxparserlval.f2 = WP_POW;       return POW;}
+">="          { wxparserlval.f2 = WP_GEQ;       return GEQ;}
+"<="          { wxparserlval.f2 = WP_LEQ;       return LEQ;}
+"=="          { wxparserlval.f2 = WP_EQ;        return EQ;}
+"!="          { wxparserlval.f2 = WP_NEQ;       return NEQ;}
+"and"         { wxparserlval.f2 = WP_AND;       return AND;}
+"or"          { wxparserlval.f2 = WP_OR;        return OR;}
+"pow"         { wxparserlval.f2 = WP_POW;       return F2; }
+"heaviside"   { wxparserlval.f2 = WP_HEAVISIDE; return F2; }
+"min"         { wxparserlval.f2 = WP_MIN;       return F2; }
+"max"         { wxparserlval.f2 = WP_MAX;       return F2; }
 
  /* We use SYMBOL to hold variables and constants */
-[a-zA-Z_][a-zA-Z0-9_]*  { yylval.s = wp_makesymbol(yytext); return SYMBOL; }
+[a-zA-Z_][a-zA-Z0-9_]*  { wxparserlval.s = wp_makesymbol(wxparsertext); return SYMBOL; }
 
  /* Number */
 [0-9]+"."[0-9]*{EXP}? |
-"."?[0-9]+{EXP}?  { yylval.d = atof(yytext);   return NUMBER; }
+"."?[0-9]+{EXP}?  { wxparserlval.d = atof(wxparsertext);   return NUMBER; }
 
  /* Special characters */
 "//".*
@@ -72,6 +73,6 @@ EXP	([Ee][-+]?[0-9]+)
 "\n"    { return EOL; }
 
  /* everything else */
-.	{ yyerror("Unknown character %c\n", *yytext); }
+.	{ wxparsererror("Unknown character %c\n", *wxparsertext); }
 
 %%