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authorjanekptacijarabaci <janekptacijarabaci@seznam.cz>2018-04-14 08:40:37 +0200
committerjanekptacijarabaci <janekptacijarabaci@seznam.cz>2018-04-14 08:40:37 +0200
commit87e4f43be04313da7b4b5ede81c9c97b6bd5394c (patch)
tree353df2087242c0f21a152241aa8012e8f18ad422
parent386266fab1d56b6ca116271d4670155653fa43ff (diff)
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Bug 1320993 - Fix exporting default class expression
-rw-r--r--js/src/builtin/ModuleObject.cpp70
-rw-r--r--js/src/jit-test/tests/modules/bug-1320993.js2
2 files changed, 37 insertions, 35 deletions
diff --git a/js/src/builtin/ModuleObject.cpp b/js/src/builtin/ModuleObject.cpp
index 710c7a76c..e2f7f997e 100644
--- a/js/src/builtin/ModuleObject.cpp
+++ b/js/src/builtin/ModuleObject.cpp
@@ -1164,6 +1164,13 @@ ModuleBuilder::processExport(frontend::ParseNode* pn)
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);
@@ -1177,53 +1184,46 @@ ModuleBuilder::processExport(frontend::ParseNode* pn)
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;
}
diff --git a/js/src/jit-test/tests/modules/bug-1320993.js b/js/src/jit-test/tests/modules/bug-1320993.js
new file mode 100644
index 000000000..bece5731a
--- /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 {})");