From b29dff93fd5d2688735e5001e977b2c0cc98a5ea Mon Sep 17 00:00:00 2001
From: Chirayu Krishnappa <chirayu@chirayuk.com>
Date: Thu, 21 Nov 2013 15:01:05 -0800
Subject: [PATCH] feat($parse): support the integer division operator

Closes #233
---
 lib/core/parser/parser.dart       | 3 ++-
 test/core/parser/parser_spec.dart | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/core/parser/parser.dart b/lib/core/parser/parser.dart
index 1e018351c..01b1c6f8d 100644
--- a/lib/core/parser/parser.dart
+++ b/lib/core/parser/parser.dart
@@ -115,6 +115,7 @@ Map<String, Operator> OPERATORS = {
   },
   '*': (s, l, a, b) => a.eval(s, l) * b.eval(s, l),
   '/': (s, l, a, b) => a.eval(s, l) / b.eval(s, l),
+  '~/': (s, l, a, b) => a.eval(s, l) ~/ b.eval(s, l),
   '%': (s, l, a, b) => a.eval(s, l) % b.eval(s, l),
   '^': (s, l, a, b) => a.eval(s, l) ^ b.eval(s, l),
   '=': NULL_OP,
@@ -290,7 +291,7 @@ class DynamicParser implements Parser {
   ParserAST _multiplicative() {
     var left = _unary();
     var token;
-    while ((token = _expect('*','/','%')) != null) {
+    while ((token = _expect('*','%','/','~/')) != null) {
       left = _binaryFn(left, token.opKey, _unary());
     }
     return left;
diff --git a/test/core/parser/parser_spec.dart b/test/core/parser/parser_spec.dart
index 56d20a298..870432ea1 100644
--- a/test/core/parser/parser_spec.dart
+++ b/test/core/parser/parser_spec.dart
@@ -72,6 +72,7 @@ main() {
 
       it('should parse multiplicative expressions', () {
         expect(eval("3*4/2%5")).toEqual(3*4/2%5);
+        expect(eval("3*4~/2%5")).toEqual(3*4~/2%5);
       });
 
 
@@ -539,6 +540,7 @@ main() {
         scope["taxRate"] =  8;
         scope["subTotal"] =  100;
         expect(eval("taxRate / 100 * subTotal")).toEqual(8);
+        expect(eval("taxRate ~/ 100 * subTotal")).toEqual(0);
         expect(eval("subTotal * taxRate / 100")).toEqual(8);
       });