Bug 1320993 - Fix exporting default class expression r=shu
--- a/js/src/builtin/ModuleObject.cpp
+++ b/js/src/builtin/ModuleObject.cpp
@@ -1135,76 +1135,76 @@ bool
ModuleBuilder::processExport(frontend::ParseNode* pn)
{
MOZ_ASSERT(pn->isKind(PNK_EXPORT) || pn->isKind(PNK_EXPORT_DEFAULT));
MOZ_ASSERT(pn->getArity() == (pn->isKind(PNK_EXPORT) ? PN_UNARY : PN_BINARY));
bool isDefault = pn->getKind() == PNK_EXPORT_DEFAULT;
ParseNode* kid = isDefault ? pn->pn_left : pn->pn_kid;
+ if (isDefault && pn->pn_right) {
+ // This is an export default containing an expression.
+ RootedAtom localName(cx_, cx_->names().starDefaultStar);
+ RootedAtom exportName(cx_, cx_->names().default_);
+ return appendExportEntry(exportName, localName);
+ }
+
switch (kid->getKind()) {
case PNK_EXPORT_SPEC_LIST:
MOZ_ASSERT(!isDefault);
for (ParseNode* spec = kid->pn_head; spec; spec = spec->pn_next) {
MOZ_ASSERT(spec->isKind(PNK_EXPORT_SPEC));
RootedAtom localName(cx_, spec->pn_left->pn_atom);
RootedAtom exportName(cx_, spec->pn_right->pn_atom);
if (!appendExportEntry(exportName, localName))
return false;
}
break;
case PNK_CLASS: {
- const ClassNode& cls = kid->as<ClassNode>();
- MOZ_ASSERT(cls.names());
- RootedAtom localName(cx_, cls.names()->innerBinding()->pn_atom);
- RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
- if (!appendExportEntry(exportName, localName))
- return false;
- break;
+ const ClassNode& cls = kid->as<ClassNode>();
+ MOZ_ASSERT(cls.names());
+ RootedAtom localName(cx_, cls.names()->innerBinding()->pn_atom);
+ RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
+ if (!appendExportEntry(exportName, localName))
+ return false;
+ break;
}
case PNK_VAR:
case PNK_CONST:
case PNK_LET: {
- MOZ_ASSERT(kid->isArity(PN_LIST));
- for (ParseNode* var = kid->pn_head; var; var = var->pn_next) {
- if (var->isKind(PNK_ASSIGN))
- var = var->pn_left;
- MOZ_ASSERT(var->isKind(PNK_NAME));
- RootedAtom localName(cx_, var->pn_atom);
- RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
- if (!appendExportEntry(exportName, localName))
- return false;
- }
- break;
+ MOZ_ASSERT(kid->isArity(PN_LIST));
+ for (ParseNode* var = kid->pn_head; var; var = var->pn_next) {
+ if (var->isKind(PNK_ASSIGN))
+ var = var->pn_left;
+ MOZ_ASSERT(var->isKind(PNK_NAME));
+ RootedAtom localName(cx_, var->pn_atom);
+ RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
+ if (!appendExportEntry(exportName, localName))
+ return false;
+ }
+ break;
}
case PNK_FUNCTION: {
- RootedFunction func(cx_, kid->pn_funbox->function());
- if (!func->isArrow()) {
- RootedAtom localName(cx_, func->explicitName());
- RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
- MOZ_ASSERT_IF(isDefault, localName);
- if (!appendExportEntry(exportName, localName))
- return false;
- break;
- }
- }
-
- MOZ_FALLTHROUGH; // Arrow functions are handled below.
-
- default:
- MOZ_ASSERT(isDefault);
- RootedAtom localName(cx_, cx_->names().starDefaultStar);
- RootedAtom exportName(cx_, cx_->names().default_);
+ RootedFunction func(cx_, kid->pn_funbox->function());
+ MOZ_ASSERT(!func->isArrow());
+ RootedAtom localName(cx_, func->explicitName());
+ RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
+ MOZ_ASSERT_IF(isDefault, localName);
if (!appendExportEntry(exportName, localName))
return false;
break;
+ }
+
+ default:
+ MOZ_CRASH("Unexpected parse node");
}
+
return true;
}
bool
ModuleBuilder::processExportFrom(frontend::ParseNode* pn)
{
MOZ_ASSERT(pn->isKind(PNK_EXPORT_FROM));
MOZ_ASSERT(pn->isArity(PN_BINARY));
new file mode 100644
--- /dev/null
+++ b/js/src/jit-test/tests/modules/bug-1320993.js
@@ -0,0 +1,2 @@
+parseModule("export default (class {})");
+parseModule("export default (class A {})");