Bug 1354212: Fix source representation for async generators created through AsyncGenerator intrinsic. r=arai

js/src/frontend/Parser.cpp

@@ -2500,7 +2500,7 @@ Parser<FullParseHandler>::standaloneFunction(HandleFunction fun,
 
     if (!tokenStream.getToken(&tt))
         return null();
-    if (generatorKind == StarGenerator && asyncKind == SyncFunction) {
+    if (generatorKind == StarGenerator) {
         MOZ_ASSERT(tt == TOK_MUL);
         if (!tokenStream.getToken(&tt))
             return null();

js/src/jsfun.cpp

@@ -1677,7 +1677,7 @@ FunctionConstructor(JSContext* cx, const CallArgs& args, GeneratorKind generator
     }
     if (!sb.append("function"))
          return false;
-    if (isStarGenerator && !isAsync) {
+    if (isStarGenerator) {
         if (!sb.append('*'))
             return false;
     }

js/src/tests/test262/local/async-generator-tostring/AsyncGenerator.js

@@ -0,0 +1,18 @@
+// Copyright 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: pending
+description: >
+  Function.prototype.toString on an async generator created with the
+  AsyncGenerator constructor.
+features: [async-iteration]
+---*/
+
+async function* f() {}
+var AsyncGenerator = f.constructor;
+
+var g = /* before */AsyncGenerator("a", " /* a */ b, c /* b */ //", "/* c */ ; /* d */ //")/* after */; 
+assert.sameValue(g.toString(), "async function* anonymous(a, /* a */ b, c /* b */ //\n) {\n/* c */ ; /* d */ //\n}");
+
+reportCompare(0, 0);

js/src/tests/test262/local/async-generator-tostring/async-generator-declaration.js

@@ -0,0 +1,14 @@
+// Copyright 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: pending
+description: Function.prototype.toString on an async generator declaration
+features: [async-iteration]
+---*/
+
+/* before */async /* a */ function /* b */ * /* c */ f /* d */ ( /* e */ x /* f */ , /* g */ y /* h */ ) /* i */ { /* j */ ; /* k */ ; /* l */ }/* after */
+
+assert.sameValue(f.toString(), "async /* a */ function /* b */ * /* c */ f /* d */ ( /* e */ x /* f */ , /* g */ y /* h */ ) /* i */ { /* j */ ; /* k */ ; /* l */ }");
+
+reportCompare(0, 0);

js/src/tests/test262/local/async-generator-tostring/async-generator-expression.js

@@ -0,0 +1,14 @@
+// Copyright 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: pending
+description: Function.prototype.toString on an async generator expression
+features: [async-iteration]
+---*/
+
+let f = /* before */async /* a */ function /* b */ * /* c */ f /* d */ ( /* e */ x /* f */ , /* g */ y /* h */ ) /* i */ { /* j */ ; /* k */ ; /* l */ }/* after */;
+
+assert.sameValue(f.toString(), "async /* a */ function /* b */ * /* c */ f /* d */ ( /* e */ x /* f */ , /* g */ y /* h */ ) /* i */ { /* j */ ; /* k */ ; /* l */ }");
+
+reportCompare(0, 0);

js/src/tests/test262/local/async-generator-tostring/async-generator-method.js

@@ -0,0 +1,16 @@
+// Copyright 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: pending
+description: Function.prototype.toString on an async generator method
+features: [async-iteration]
+---*/
+
+let f = { /* before */async /* a */ * /* b */ f /* c */ ( /* d */ ) /* e */ { /* f */ }/* after */ }.f;
+let g = { /* before */async /* a */ * /* b */ [ /* c */ "g" /* d */ ] /* e */ ( /* f */ ) /* g */ { /* h */ }/* after */ }.g;
+
+assert.sameValue(f.toString(), "async /* a */ * /* b */ f /* c */ ( /* d */ ) /* e */ { /* f */ }");
+assert.sameValue(g.toString(), "async /* a */ * /* b */ [ /* c */ \"g\" /* d */ ] /* e */ ( /* f */ ) /* g */ { /* h */ }");
+
+reportCompare(0, 0);