1 files changed, 20 insertions, 0 deletions
diff --git a/store/works/life/compile-principle-experiment/4/lex.l b/store/works/life/compile-principle-experiment/4/lex.l
new file mode 100644
index 0000000..e7731ca
--- /dev/null
+++ b/store/works/life/compile-principle-experiment/4/lex.l
@@ -0,0 +1,20 @@
+%{
+#include "main.h"
+#include "syn.h"
+%}
+%option noyywrap
+%%
+[ \t]	{ ; }	/* skip blanks and tabs */
+[0-9]+\.?|[0-9]*\.[0-9]+ {
+	Symbol *s = cru_symbol_install("", UNDEF, (SymbolValue)0.0);
+	sscanf(yytext, "%lf", &s->value.val);
+	yylval.sym = s;
+	return NUMBER; }
+[a-zA-Z][a-zA-Z0-9]* {
+	Symbol *s;
+	if ((s=cru_symbol_lookup(yytext)) == 0)
+		s = cru_symbol_install(yytext, UNDEF, (SymbolValue)0.0);
+	yylval.sym = s;
+	return s->type == UNDEF ? VAR : s->type; }
+\n	{ lineno++; return '\n'; }   /* everything else */
+.	{ return yytext[0]; }