Parser optimizations.

- parser is now non-recursive (i.e. parse function is not called recursively in any case);
 - byte-code is now more compact:
    - constants are now not immediately dumped upon occurence, but later - where necessary;
    - assignments are combined with unary / binary operations;
    - binary operations are encoded more compactly in many cases;
 - byte-code arrays are now allocated separately for each scope (so, GC of the scopes now becomes possible);
 - byte-code is dumped directly into corresponding byte-code arrays:
   - linked lists of op_meta are not now used for main code of a scope.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
JerryScript-DCO-1.0-Signed-off-by: Andrey Shitov a.shitov@samsung.com

tests/jerry/regression-test-issue-280.js

@@ -13,9 +13,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-try {
-  eval('v_0 = {0: delete 3. instanceof foo() ^ {} }');
-  assert(false);
-} catch (e) {
-  assert(e instanceof ReferenceError);
+function check_reference_error (s) {
+  try {
+    eval (s);
+    assert (false);
+  } catch (e) {
+    assert (e instanceof ReferenceError);
+  }
 }
+
+check_reference_error ('v_0 = {0: delete 3. instanceof foo() ^ {} }');

tests/jerry/regression-test-issue-644.js

@@ -0,0 +1,22 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// 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.
+
+function a()
+{
+  for (i = 1; i < 5; i++)
+    if (i) {
+      5;
+    }
+}

tests/jerry/regression-test-issue-646.js

@@ -0,0 +1,19 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+//
+// 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 a;
+
+(a) = 1;
+
+assert (a === 1);

tests/jerry/regression-test-issue-737.js

@@ -0,0 +1,68 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+//
+// 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.
+
+function check_syntax_error (s) {
+  try {
+    eval (s);
+    assert (false);
+  } catch (e) {
+    assert (e instanceof SyntaxError);
+  }
+}
+
+/* Test case #1 */
+check_syntax_error (
+" new function f(f) {                                \
+  return {className: 'xxx'};                         \
+};                                                   \
+x = 1;                                               \
+function g(active) {                                 \
+  for (i = 1; i <= 1000; i++) { if (i == active) {   \
+  x = i;   if (f(\"\" + i) != null) { }              \
+    } else {                                         \
+  if (f(\"\" + i) != null) }                         \
+  }                                                  \
+}                                                    \
+g(0)                                                 \
+");
+
+/* Test case #2 */
+check_syntax_error (
+" new function a(a) {;for (f in [1,2,3]) print(f);   \
+}; 1;                                                \
+function g(active) {                                 \
+  for (i = 1; i <= 1000; i++) { if (i == active) {   \
+  xI                                                 \
+      if (f != null) { }                             \
+    } else {                                         \
+  if (f(\"\" + i) != null) }                         \
+  }                                                  \
+}                                                    \
+g(0)                                                 \
+");
+
+/* Test case #3 */
+check_syntax_error (
+" new function f(f) {;for (f in [1,2,3]) pRint(f);   \
+}; 1;                                                \
+function g(active) {                                 \
+  for (i = 1; i <= 1000; i++) { if (i == active) {   \
+  x                                                  \
+      if (f != null) { }                             \
+    } else {                                         \
+  if (f(\"\" + i) != null) }                         \
+  }                                                  \
+}                                                    \
+g(0)                                                 \
+");

tests/jerry/switch-case.js

@@ -48,6 +48,14 @@ switch (a) {
     assert (0);
 }
 
+switch (a) {
+  case 3:
+    assert (0);
+  default:
+    assert (0);
+  case 1:
+}
+
 executed_case = '';
 switch (a) {
   default: