Implement left-hand-side expression parsing. (#3292)

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

tests/jerry/es2015/class-inheritance-early-semantics.js

@@ -107,6 +107,14 @@ must_throw ("class A extends A { }");
 
 must_throw ("class A extends { constructor () { super () } }");
 
+must_throw ("class A extends a * b {}");
+
+must_throw ("class A extends a = b {}");
+
+must_throw ("class A extends a++ {}");
+
+must_throw ("class A extends -a {}");
+
 class B extends A {
   constructor (a, b) {
     super (a);

tests/jerry/for-in.js

@@ -281,3 +281,11 @@ assert(count == 1
            || 'base_prop2' in log
            || 'derived_prop1' in log
            || 'derived_prop2' in log));
+
+try {
+  /* This form is a SyntaxError even in ES5.1. */
+  eval("for (a = b in {}) ;");
+  assert(false);
+} catch (e) {
+  assert(e instanceof SyntaxError);
+}