Implement generator support for object initializers and classes. (#3372)

Large part of the code is also reworked. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
2019-11-29 12:28:51 +01:00
parent 1b01bb034f
commit 8956eff2bd
7 changed files with 411 additions and 185 deletions
@@ -0,0 +1,138 @@
+/* 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.
+ */
+
+/* This file checks core generator operations. */
+
+function check_syntax_error (code)
+{
+  try {
+    eval (code)
+    assert (false)
+  } catch (e) {
+    assert (e instanceof SyntaxError)
+  }
+}
+
+check_syntax_error ("({ * })")
+check_syntax_error ("({ *, b:4 })")
+check_syntax_error ("({ *a:4 })")
+check_syntax_error ("({ *['a']:4 })")
+check_syntax_error ("({ *a(yield) {} })")
+check_syntax_error ("({ get *a() {} })")
+check_syntax_error ("({ set *b(v) {} })")
+
+check_syntax_error ("class C { * }")
+check_syntax_error ("class C { static * }")
+check_syntax_error ("class C { *() {} }")
+check_syntax_error ("class C { static * () {} }")
+check_syntax_error ("class C { *['a'] {} }")
+
+function check_result(result, value, done)
+{
+  assert(result.value === value)
+  assert(result.done === done)
+}
+
+function postfix(a) { return a + "b" }
+
+var o = {
+  * a () {
+    yield 1
+    return 2
+  },
+  *2(x) {
+    yield x + 1
+    return x + 2
+  },
+  *[postfix("a")]() {
+    var o = { get yield() { return 3 + 2 } }
+
+    yield o.yield
+    return 6
+  },
+  *yield() {
+    var o = { yield:7 }
+
+    yield o.yield
+    return 8
+  }
+}
+
+var f = o.a()
+check_result(f.next(), 1, false)
+check_result(f.next(), 2, true)
+
+var f = o[2](2)
+check_result(f.next(), 3, false)
+check_result(f.next(), 4, true)
+
+var f = o.ab()
+check_result(f.next(), 5, false)
+check_result(f.next(), 6, true)
+
+var f = o.yield()
+check_result(f.next(), 7, false)
+check_result(f.next(), 8, true)
+
+class C {
+  * a () {
+    yield 1
+    return 2
+  }
+
+  *3(x) {
+    yield x + 1
+    return x + 2
+  }
+
+  *[postfix("a")]() {
+    var o = { get yield() { return 3 + 2 } }
+
+    yield o.yield
+    return 6
+  }
+
+  static *yield() {
+    var o = { yield:7 }
+
+    yield o.yield
+    return 8
+  }
+
+  static * [postfix("b") ] (v = 9) {
+    return v
+  }
+}
+
+var c = new C
+
+var f = c.a()
+check_result(f.next(), 1, false)
+check_result(f.next(), 2, true)
+
+var f = c[3](2)
+check_result(f.next(), 3, false)
+check_result(f.next(), 4, true)
+
+var f = c.ab()
+check_result(f.next(), 5, false)
+check_result(f.next(), 6, true)
+
+var f = C.yield()
+check_result(f.next(), 7, false)
+check_result(f.next(), 8, true)
+
+var f = C.bb()
+check_result(f.next(), 9, true)