Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/parsing/func-name-inferrer.cc b/src/parsing/func-name-inferrer.cc
new file mode 100644
index 0000000..12013af
--- /dev/null
+++ b/src/parsing/func-name-inferrer.cc
@@ -0,0 +1,85 @@
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/parsing/func-name-inferrer.h"
+
+#include "src/ast/ast.h"
+#include "src/ast/ast-value-factory.h"
+#include "src/list-inl.h"
+
+namespace v8 {
+namespace internal {
+
+FuncNameInferrer::FuncNameInferrer(AstValueFactory* ast_value_factory,
+ Zone* zone)
+ : ast_value_factory_(ast_value_factory),
+ entries_stack_(10, zone),
+ names_stack_(5, zone),
+ funcs_to_infer_(4, zone),
+ zone_(zone) {
+}
+
+
+void FuncNameInferrer::PushEnclosingName(const AstRawString* name) {
+ // Enclosing name is a name of a constructor function. To check
+ // that it is really a constructor, we check that it is not empty
+ // and starts with a capital letter.
+ if (!name->IsEmpty() && unibrow::Uppercase::Is(name->FirstCharacter())) {
+ names_stack_.Add(Name(name, kEnclosingConstructorName), zone());
+ }
+}
+
+
+void FuncNameInferrer::PushLiteralName(const AstRawString* name) {
+ if (IsOpen() && name != ast_value_factory_->prototype_string()) {
+ names_stack_.Add(Name(name, kLiteralName), zone());
+ }
+}
+
+
+void FuncNameInferrer::PushVariableName(const AstRawString* name) {
+ if (IsOpen() && name != ast_value_factory_->dot_result_string()) {
+ names_stack_.Add(Name(name, kVariableName), zone());
+ }
+}
+
+
+const AstString* FuncNameInferrer::MakeNameFromStack() {
+ return MakeNameFromStackHelper(0, ast_value_factory_->empty_string());
+}
+
+const AstString* FuncNameInferrer::MakeNameFromStackHelper(
+ int pos, const AstString* prev) {
+ if (pos >= names_stack_.length()) return prev;
+ if (pos < names_stack_.length() - 1 &&
+ names_stack_.at(pos).type == kVariableName &&
+ names_stack_.at(pos + 1).type == kVariableName) {
+ // Skip consecutive variable declarations.
+ return MakeNameFromStackHelper(pos + 1, prev);
+ } else {
+ if (prev->length() > 0) {
+ const AstRawString* name = names_stack_.at(pos).name;
+ if (prev->length() + name->length() + 1 > String::kMaxLength) return prev;
+ const AstConsString* curr = ast_value_factory_->NewConsString(
+ ast_value_factory_->dot_string(), name);
+ curr = ast_value_factory_->NewConsString(prev, curr);
+ return MakeNameFromStackHelper(pos + 1, curr);
+ } else {
+ return MakeNameFromStackHelper(pos + 1, names_stack_.at(pos).name);
+ }
+ }
+}
+
+
+void FuncNameInferrer::InferFunctionsNames() {
+ const AstString* func_name = MakeNameFromStack();
+ for (int i = 0; i < funcs_to_infer_.length(); ++i) {
+ funcs_to_infer_[i]->set_raw_inferred_name(func_name);
+ }
+ funcs_to_infer_.Rewind(0);
+}
+
+
+} // namespace internal
+} // namespace v8