Create interp.l

interp.l

@@ -0,0 +1,41 @@
+%option yylineno
+%{
+#include "y.tab.h"
+int yycharno = 0;
+%}
+
+
+str     \"([^\n]|\\\")+\"
+ws      [ \t]+
+newline [\n]
+alpha   [a-zA-Z]
+dig     [0-9]
+float1  {dig}+[.]{dig}+
+int     {dig}+
+float2  {float1}[eE][-+]?{dig}+
+float   {float1}|{float2}
+number  {int}|{float}
+var     ([_]|{alpha})([_]|{alpha}|{dig})*
+%%
+
+{newline}  {yylineno  = yylineno + 1;return T_NEWLINE;}
+{ws}     {yycharno = yycharno + yyleng;}
+{var}    {yylval.strVal = strdup(yytext);
+          yycharno = yycharno + yyleng;
+          printf("yyval.strVal = %s",yylval.strVal);
+          return T_VAR;}
+{number} {yylval.floatVal = atof(yytext);
+          yycharno = yycharno + yyleng;
+          return T_NUM;}
+"-"      {yycharno += 1;return T_SUB;}
+"+"      {yycharno += 1;return T_ADD;}
+"*"      {yycharno += 1;return T_MUL;}
+"/"      {yycharno += 1; return T_DIV;}
+"("      {yycharno += 1; return T_LPATH;}
+")"      {yycharno += 1; return T_RPATH;}
+.        {yycharno += 1;}
+
+%%
+int yywrap(void){
+  return 1;
+}