added tests for break and continue

lox.t/break/for.lox

@@ -0,0 +1,11 @@
+for (var i = 0; i < 10; i = i + 1) {
+    if (i == 5)
+        break;
+    
+    print i;
+}
+// expect: 0
+// expect: 1
+// expect: 2
+// expect: 3
+// expect: 4

lox.t/break/outside_loop.lox

@@ -0,0 +1,2 @@
+break;
+// expect: error

lox.t/break/while.lox

@@ -0,0 +1,15 @@
+var i = 0;
+
+while (i < 10) {    
+    if (i == 5)
+        break;
+    
+    print i;
+    
+    i = i + 1;
+}
+// expect: 0
+// expect: 1
+// expect: 2
+// expect: 3
+// expect: 4

lox.t/continue/for.lox

@@ -0,0 +1,16 @@
+for (var i = 0; i < 10; i = i + 1) {
+    if (i == 5)
+        continue;
+
+    print i;
+}
+// expect: 0
+// expect: 1
+// expect: 2
+// expect: 3
+// expect: 4
+// expect: 6
+// expect: 7
+// expect: 8
+// expect: 9
+

lox.t/continue/outside_loop.lox

@@ -0,0 +1,2 @@
+continue;
+// expect: error

lox.t/continue/while.lox

@@ -0,0 +1,21 @@
+var i = 0;
+
+while (i < 10) {    
+    if (i == 5) {
+        i = i + 1;
+        continue;
+    }
+
+    print i;
+    
+    i = i + 1;
+}
+// expect: 0
+// expect: 1
+// expect: 2
+// expect: 3
+// expect: 4
+// expect: 6
+// expect: 7
+// expect: 8
+// expect: 9

lox.t/run.t

@@ -136,6 +136,31 @@ file bool/not.lox
   true
 
 
+file break/for.lox
+  $ mlox break/for.lox
+  0
+  1
+  2
+  3
+  4
+
+
+file break/outside_loop.lox
+  $ mlox break/outside_loop.lox
+  found 1 ParserError:
+  ParserError at line 1, column 0: Can use break only in loops
+  [1]
+
+
+file break/while.lox
+  $ mlox break/while.lox
+  0
+  1
+  2
+  3
+  4
+
+
 file call/bool.lox
 $ mlox call/bool.lox
 
@@ -298,8 +323,37 @@ file constructor/return_value.lox
 $ mlox constructor/return_value.lox
 
 
-file empty_file.lox
+file continue/for.lox
-  $ mlox empty_file.lox
+  $ mlox continue/for.lox
+  0
+  1
+  2
+  3
+  4
+  6
+  7
+  8
+  9
+
+
+file continue/outside_loop.lox
+  $ mlox continue/outside_loop.lox
+  found 1 ParserError:
+  ParserError at line 1, column 0: Can use continue only in loops
+  [1]
+
+
+file continue/while.lox
+  $ mlox continue/while.lox
+  0
+  1
+  2
+  3
+  4
+  6
+  7
+  8
+  9
 
 
 file expressions/evaluate.lox