Implement binding pattern support for rest argument and for statement. (#3327)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/jerry/es2015/for-pattern.js

@@ -0,0 +1,77 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var idx = 0;
+for (var [a,b] of [[1,2], [3,4]])
+{
+  if (idx == 0)
+  {
+    assert(a === 1);
+    assert(b === 2);
+    idx = 1;
+  }
+  else
+  {
+    assert(a === 3);
+    assert(b === 4);
+  }
+}
+
+assert(a === 3);
+assert(b === 4);
+
+idx = 0;
+for (let [a,b] of [[5,6], [7,8]])
+{
+  if (idx == 0)
+  {
+    assert(a === 5);
+    assert(b === 6);
+    idx = 1;
+  }
+  else
+  {
+    assert(a === 7);
+    assert(b === 8);
+  }
+}
+
+assert(a === 3);
+assert(b === 4);
+
+idx = 0;
+for (let [a,b] of [[11,12], [13,14]])
+{
+  if (idx == 0)
+  {
+    eval("assert(a === 11)");
+    eval("assert(b === 12)");
+    idx = 1;
+  }
+  else
+  {
+    eval("assert(a === 13)");
+    eval("assert(b === 14)");
+  }
+}
+
+assert(a === 3);
+assert(b === 4);
+
+try {
+  eval("for (let [a,b] = [1,2] of [[3,4]]) {}");
+  assert(false);
+} catch (e) {
+  assert(e instanceof SyntaxError);
+}

tests/jerry/es2015/function-pattern1.js

@@ -30,6 +30,7 @@ must_throw ("function f([a], a) {}");
 must_throw ("function f(a = b, [b]) {}; f()", ReferenceError);
 must_throw ("function f([a+b]) {}");
 must_throw ("function f([a().b]) {}");
+must_throw ("function f(...[a] = [1]) {}");
 
 function a1([a,b]) {
   var a, b;

tests/jerry/es2015/function-pattern2.js

@@ -59,3 +59,12 @@ function k([a = function() { return a; }])
   assert(a() === a);
 }
 k([]);
+
+function l(a = 0, ...[b, c = 1, d = 4])
+{
+  assert(a === 1);
+  assert(b === 2);
+  assert(c === 3);
+  assert(d === 4);
+}
+l(1,2,3);