Basic parser coming together.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/parser.l b/src/parser.l
new file mode 100644
index 0000000..d5ff735
--- /dev/null
+++ b/src/parser.l
@@ -0,0 +1,43 @@
+%{
+#include <stdint.h>
+#include "parser.tab.h"
+%}
+
+%option noyywrap
+
+%x sitname
+%x comment
+%x tdqstr tsqstr
+%%
+
+[-{}<>=+/*,();]                                 { return yytext[0]; }
+
+game                                                    { return tokGame; }
+function                                                { return tokFunction; }
+situation                                               { return tokSituation; }
+while                                                   { return tokWhile; }
+for                                                             { return tokFor; }
+each                                                    { return tokEach; }
+in                                                              { return tokIn; }
+if                                                              { return tokIf; }
+then                                                    { return tokThen; }
+else                                                    { return tokElse; }
+command                                                 { return tokCommand; }
+goto                                                    { return tokGoto; }
+
+"<<"                                                    { BEGIN( sitname ); }
+<sitname>[- a-zA-Z0-9]+                 { printf("situation: %s\n", yytext ); return tokSituationName; }
+<sitname>">>"                                   { BEGIN( INITIAL ); }
+<sitname>.                                              REJECT;
+
+"//"[^\n]*                                              {}
+
+"/\*"                                                           { BEGIN( comment ); }
+<comment>"\*/"                                  { BEGIN( INITIAL ); }
+<comment>.                                              {}
+
+[a-zA-Z_][a-zA-Z0-9_]*                  { return tokIdent; }
+
+[ \t\n\r]+                                              {}
+
+%%