1 files changed, 58 insertions, 0 deletions
diff --git a/src/system.l b/src/system.l
new file mode 100644
index 0000000..b77255e
--- /dev/null
+++ b/src/system.l
@@ -0,0 +1,58 @@
+%option c++
+%option noyywrap
+%option debug
+%option yyclass="Lexer"
+
+%{
+#include <iostream>
+#include "system.tab.hh"
+
+#undef YY_DECL
+# define YY_DECL  template<> parser::symbol_type Lexer<parser::symbol_type>::yynlex ()
+
+using parser = yy::parser;
+using namespace std;
+%}
+
+digit   [0-9]
+num     {digit}+
+frc		{digit}+\.{digit}+
+%%
+{frc}			{ return parser::make_FRC(atof(yytext_ptr)); }
+{num}			{ return parser::make_NUM(atoi(yytext_ptr)); }
+
+[\n]+			{ return parser::make_BREAK();}
+[ \t]+			{ return parser::make_BLANK();}
+begin			{ return parser::make_START(); }
+end				{ return parser::make_END(); }
+ver				{ return parser::make_VERSION(); }
+cpu				{ return parser::make_CPU();  }
+base			{ return parser::make_BASE(); }
+user%			{ return parser::make_USER(); }
+nice%			{ return parser::make_NICE(); }
+system%			{ return parser::make_SYSP(); }
+idle%			{ return parser::make_IDLE(); }
+iowait%			{ return parser::make_IOWP(); }
+irq%			{ return parser::make_IRQP(); }
+swirq%			{ return parser::make_SIRQ(); }
+core:			{ return parser::make_CORE(); }
+
+mem				{ return parser::make_MEM();    }
+total			{ return parser::make_TOTAL();  }
+cache			{ return parser::make_CACHE();  }
+share			{ return parser::make_SHARED(); }
+tswap			{ return parser::make_TSWAP();  }
+uswap			{ return parser::make_USWAP();  }
+
+tmp				{ return parser::make_TEMP(); }
+cur				{ return parser::make_CURR(); }
+min				{ return parser::make_TMIN(); }
+max				{ return parser::make_TMAX(); }
+avg				{ return parser::make_TAVG(); }
+
+:				{ return parser::make_COLON(); }
+\/				{ return parser::make_SLASH(); }
+
+. 				{ /* everything else */ }
+
+%%