Implement binary literal parsing (#3439)

This patch will allow the user to use binary literals starting with 0b or 0B,
these literals will be evaluated in parsing time resulting an integer

Co-authored-by: Robert Fancsik frobert@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

tests/jerry/es2015/binary-literal.js

@@ -0,0 +1,52 @@
+/* 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.
+ */
+
+function checkSyntaxError (str) {
+  try {
+    eval(str);
+    assert(false);
+  } catch (e) {
+    assert(e instanceof SyntaxError);
+  }
+}
+
+// Test with invalid literals
+checkSyntaxError("0c");
+checkSyntaxError("0b");
+checkSyntaxError("0b0123456");
+checkSyntaxError("0b2");
+
+checkSyntaxError("0C");
+checkSyntaxError("0B");
+checkSyntaxError("0B2");
+
+checkSyntaxError("000b01010101");
+checkSyntaxError("010b01010101");
+checkSyntaxError("11 0b01010101");
+
+// Test with valid literals
+assert(0b111 === 7);
+assert(0b111110111 === 503);
+assert(0b111101010101 === 3925);
+assert(0b00000000000001 === 1);
+assert(0b00000000000000 === 0);
+assert(0b1101001 === parseInt ("1101001", 2));
+
+assert(0B111 === 7);
+assert(0B111110111 === 503);
+assert(0B111101010101 === 3925);
+assert(0B00000000000001 === 1);
+assert(0B00000000000000 === 0);
+assert(0B1101001 === parseInt ("1101001", 2));