Added optional Lua lexer support.

This support is disabled by default and must be enabled via compile-time option.

1 files changed, 42 insertions, 0 deletions

diff --git a/lua/src/lpcode.h b/lua/src/lpcode.h
new file mode 100644
index 000000000..896d3c79a
--- /dev/null
+++ b/lua/src/lpcode.h
@@ -0,0 +1,42 @@
+/*
+** $Id: lpcode.h,v 1.7 2015/06/12 18:24:45 roberto Exp $
+*/
+
+#if !defined(lpcode_h)
+#define lpcode_h
+
+#include "lua.h"
+
+#include "lptypes.h"
+#include "lptree.h"
+#include "lpvm.h"
+
+int tocharset (TTree *tree, Charset *cs);
+int checkaux (TTree *tree, int pred);
+int fixedlenx (TTree *tree, int count, int len);
+int hascaptures (TTree *tree);
+int lp_gc (lua_State *L);
+Instruction *compile (lua_State *L, Pattern *p);
+void realloccode (lua_State *L, Pattern *p, int nsize);
+int sizei (const Instruction *i);
+
+
+#define PEnullable      0
+#define PEnofail        1
+
+/*
+** nofail(t) implies that 't' cannot fail with any input
+*/
+#define nofail(t)	checkaux(t, PEnofail)
+
+/*
+** (not nullable(t)) implies 't' cannot match without consuming
+** something
+*/
+#define nullable(t)	checkaux(t, PEnullable)
+
+#define fixedlen(t)     fixedlenx(t, 0, 0)
+
+
+
+#endif