1 files changed, 95 insertions, 0 deletions
diff --git a/decuda_to_ptxplus/header.l b/decuda_to_ptxplus/header.l
new file mode 100644
index 0000000..848c189
--- /dev/null
+++ b/decuda_to_ptxplus/header.l
@@ -0,0 +1,95 @@
+%option noyywrap
+%option yylineno
+%option prefix="header_"
+%{
+#include <iostream>
+#include "headerParser.hpp"
+#include <string.h>
+
+/* not sure if this is needed*/
+#define	YY_NEVER_INTERACTIVE	1
+
+void header_error(const char*);
+extern void output(const char * text);
+%}
+
+
+/*Regular expresions go here*/
+alpha		[a-zA-Z]
+numeric		[0-9]
+hexalpha	[A-Fa-f]
+alphanum	({alpha}|{numeric})
+hexdigit	({numeric}|{hexalpha})
+whitespace	[ \t]
+newline		[\n]
+anycharbutnewline [^\n]
+anychar		({newline}|{anycharbutnewline})
+anycharbutrightbrace [^"}"]
+
+identifier	({alpha}({alphanum}|["_$"])*)|([_$%]({alphanum}|["_$"])+)
+hexliteral	0[xX]{hexdigit}+U?
+octliteral	0[0-7]+U?
+binliteral	0[bB][01]+U?
+decliteral	([1-9][0-9]*U?)|0U?
+
+%%
+	/*Translation rules*/
+
+	/*Compiler directives*/
+\.version	return DOTVERSION;
+\.target	return DOTTARGET;
+\.entry	return DOTENTRY;
+
+	/*State spaces*/
+\.param	return DOTPARAM;
+
+	/*operand types*/
+\.u64	return DOTU64;
+\.u32	return DOTU32;
+\.u16	return DOTU16;
+\.b32	return DOTB32;
+\.f32	return DOTF32;
+
+
+	/*identifier + literals*/
+{identifier}	header_lval.string_value = strdup(yytext); return IDENTIFER;
+{decliteral}	header_lval.string_value = strdup(yytext); return DECLITERAL; //change to int later?
+
+	/*braces and parenthesis*/
+\(	return LEFTPAREN;
+\)	return RIGHTPAREN;
+
+	/*discard newline*/
+{newline}+
+
+
+	/*discard commas and periods*/
+\,
+\.
+	/*discard whitespace*/
+{whitespace}+
+	/*discard comments*/
+"//"{anycharbutnewline}*{newline}
+
+	/*discard other header stuff*/
+\.file{anycharbutnewline}*{newline}
+\.extern{anycharbutnewline}*{newline}
+
+	/*discard kernel body*/
+\{{anycharbutrightbrace}*\}
+
+	/*reached end of file*/
+<<EOF>>	return 0;
+
+	/*None of the rules matched. Throw error*/
+.			header_error("Invalid token");
+
+%%
+
+void header_error(const char* message)
+{
+	output("   "); output(message); output(" near \""); output(header_text); output("\"");
+	output(" on line "); 
+	char line[5]; sprintf(line, "%i", header_lineno); output(line);
+	output("\n");
+}