DIRECTOR: Added stub parser. Now just arithmetic expressions.

1 files changed, 61 insertions, 0 deletions

diff --git a/engines/director/lingo/lingo-lex.l b/engines/director/lingo/lingo-lex.l
new file mode 100644
index 0000000000..081a50542a
--- /dev/null
+++ b/engines/director/lingo/lingo-lex.l
@@ -0,0 +1,61 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+%option noyywrap
+%{
+
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "common/str.h"
+
+#include "director/lingo/lingo.h"
+#include "director/lingo/lingo-gr.h"
+
+void yyparse();
+
+%}
+
+%%
+
+[_[:alpha:]][_[:alnum:]]*     yylval.s = new Common::String(yytext);  return VAR;
+[[:digit:]]+                  yylval.i = strtol(yytext, NULL, 10); return INT;
+[-+*/%=^:,]                   return *yytext;
+.|\n                          ; /* ignore all the rest */
+
+%%
+
+namespace Director {
+
+int Lingo::parse(char *code) {
+	YY_BUFFER_STATE bp;
+
+	yy_delete_buffer(YY_CURRENT_BUFFER);
+
+	bp = yy_scan_string(code);
+	yy_switch_to_buffer(bp);
+	yyparse();
+	yy_delete_buffer(bp);
+
+	return 0;
+}
+
+}