1 files changed, 18 insertions, 0 deletions
diff --git a/grammars/expression/grammar.txt b/grammars/expression/grammar.txt
new file mode 100644
index 0000000..a1590fa
--- /dev/null
+++ b/grammars/expression/grammar.txt
@@ -0,0 +1,18 @@
+INT regex
+    [0-9]+
+
+OP list
+    || && -- ++ = == !
+    / * - + << >> % ^
+    /= *= -= += <<= >>= &= |= %= ^=
+    -> .
+    < > <= >= !=
+    ? :
+    ( ) { } [ ]
+    , ;
+
+EXPR nonterm .start
+    EXPR OP EXPR
+    INT
+    ( EXPR )
+    EXPR ? EXPR : EXPR