From d4b977d0904a1dea37922dac60d3bb37f9769230 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Thu, 5 Jan 2012 04:47:56 +1000
Subject: Add a simple flex + btyacc stub.

Will be fleshed out soon with LSL grammer.
---
 LuaSL/src/LuaSL_yaccer.y | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 LuaSL/src/LuaSL_yaccer.y

(limited to 'LuaSL/src/LuaSL_yaccer.y')

diff --git a/LuaSL/src/LuaSL_yaccer.y b/LuaSL/src/LuaSL_yaccer.y
new file mode 100644
index 0000000..07f1fd7
--- /dev/null
+++ b/LuaSL/src/LuaSL_yaccer.y
@@ -0,0 +1,36 @@
+%{
+
+#include "LuaSL_parser_param.h"
+#include "LuaSL_yaccer.tab.h"
+
+%}
+
+%define api.pure
+
+%left '+' TOKEN_PLUS
+%left '*' TOKEN_MULTIPLY
+
+%token TOKEN_LPAREN
+%token TOKEN_RPAREN
+%token TOKEN_PLUS
+%token TOKEN_MULTIPLY
+
+%token <value> TOKEN_NUMBER
+
+%type <expression> expr
+
+%%
+
+input: 
+        expr { ((SParserParam*)data)->expression = $1; }
+        ;
+
+expr:
+      expr TOKEN_PLUS expr { $$ = createOperation( ePLUS, $1, $3 ); }
+    | expr TOKEN_MULTIPLY expr { $$ = createOperation( eMULTIPLY, $1, $3 ); }
+    | TOKEN_LPAREN expr TOKEN_RPAREN { $$ = $2; }
+    | TOKEN_NUMBER { $$ = createNumber($1); }
+;
+
+%%
+
-- 
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