Throw error for generator function class constructor (#3489)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

tests/jerry/es2015/class.js

@@ -56,6 +56,7 @@ must_throw("class X {}; var o = {}; Object.defineProperty(o, 'p', { get: X, set:
 must_throw("var a = new A; class A {};");
 must_throw("class A { g\\u0065t e() {} }");
 must_throw('class A { "static" e() {} }');
+must_throw('class A { *constructor() {} }');
 
 assert(eval("class A {}") === undefined);
 assert(eval("var a = class A {}") === undefined);
@@ -64,6 +65,22 @@ assert(eval("class A { ; ; ; ;;;;;;;;;;;; ; ; ;;;;;;;;;;;;;;;;;;;;;;;;; }") ===
 assert(eval('class A {"constructor"() {} }') === undefined);
 assert(isNaN (eval('switch(1) { default: (class A{} % 1) }')));
 
+class A1 {
+  ["constructor"]() {
+    return 5;
+  }
+}
+
+assert ((new A1).constructor() === 5);
+
+class A2 {
+  *["constructor"]() {
+    yield 5;
+  }
+}
+
+assert ((new A2).constructor().next().value === 5);
+
 class B {
 }
 
@@ -90,6 +107,10 @@ class C {
   return() {
     return 43;
   }
+
+  static *constructor() {
+    return 44;
+  }
 }
 
 var c = new C;
@@ -99,6 +120,7 @@ assert (c["3"]() === 3);
 assert (c.super() === 42);
 assert (c.return() === 43);
 assert (c.constructor === C);
+assert (C.constructor().next().value === 44);
 
 class D {
   constructor(d) {