| // Copyright 2007-2008 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include <stdlib.h> |
| |
| #include "v8.h" |
| |
| #include "heap.h" |
| #include "cctest.h" |
| |
| using namespace v8; |
| |
| |
| enum Expectations { |
| EXPECT_RESULT, |
| EXPECT_EXCEPTION |
| }; |
| |
| |
| // A DeclarationContext holds a reference to a v8::Context and keeps |
| // track of various declaration related counters to make it easier to |
| // track if global declarations in the presence of interceptors behave |
| // the right way. |
| class DeclarationContext { |
| public: |
| DeclarationContext(); |
| |
| virtual ~DeclarationContext() { |
| if (is_initialized_) { |
| context_->Exit(); |
| context_.Dispose(); |
| } |
| } |
| |
| void Check(const char* source, |
| int get, int set, int has, |
| Expectations expectations, |
| v8::Handle<Value> value = Local<Value>()); |
| |
| int get_count() const { return get_count_; } |
| int set_count() const { return set_count_; } |
| int has_count() const { return has_count_; } |
| |
| protected: |
| virtual v8::Handle<Value> Get(Local<String> key); |
| virtual v8::Handle<Value> Set(Local<String> key, Local<Value> value); |
| virtual v8::Handle<Boolean> Has(Local<String> key); |
| |
| void InitializeIfNeeded(); |
| |
| // Get the holder for the interceptor. Default to the instance template |
| // but may be overwritten. |
| virtual Local<ObjectTemplate> GetHolder(Local<FunctionTemplate> function) { |
| return function->InstanceTemplate(); |
| } |
| |
| // The handlers are called as static functions that forward |
| // to the instance specific virtual methods. |
| static v8::Handle<Value> HandleGet(Local<String> key, |
| const AccessorInfo& info); |
| static v8::Handle<Value> HandleSet(Local<String> key, |
| Local<Value> value, |
| const AccessorInfo& info); |
| static v8::Handle<Boolean> HandleHas(Local<String> key, |
| const AccessorInfo& info); |
| |
| private: |
| bool is_initialized_; |
| Persistent<Context> context_; |
| Local<String> property_; |
| |
| int get_count_; |
| int set_count_; |
| int has_count_; |
| |
| static DeclarationContext* GetInstance(const AccessorInfo& info); |
| }; |
| |
| |
| DeclarationContext::DeclarationContext() |
| : is_initialized_(false), get_count_(0), set_count_(0), has_count_(0) { |
| // Do nothing. |
| } |
| |
| |
| void DeclarationContext::InitializeIfNeeded() { |
| if (is_initialized_) return; |
| HandleScope scope; |
| Local<FunctionTemplate> function = FunctionTemplate::New(); |
| Local<Value> data = External::New(this); |
| GetHolder(function)->SetNamedPropertyHandler(&HandleGet, |
| &HandleSet, |
| &HandleHas, |
| 0, 0, |
| data); |
| context_ = Context::New(0, function->InstanceTemplate(), Local<Value>()); |
| context_->Enter(); |
| is_initialized_ = true; |
| } |
| |
| |
| void DeclarationContext::Check(const char* source, |
| int get, int set, int has, |
| Expectations expectations, |
| v8::Handle<Value> value) { |
| InitializeIfNeeded(); |
| // A retry after a GC may pollute the counts, so perform gc now |
| // to avoid that. |
| v8::internal::Heap::CollectGarbage(0, v8::internal::NEW_SPACE); |
| HandleScope scope; |
| TryCatch catcher; |
| catcher.SetVerbose(true); |
| Local<Value> result = Script::Compile(String::New(source))->Run(); |
| CHECK_EQ(get, get_count()); |
| CHECK_EQ(set, set_count()); |
| CHECK_EQ(has, has_count()); |
| if (expectations == EXPECT_RESULT) { |
| CHECK(!catcher.HasCaught()); |
| if (!value.IsEmpty()) { |
| CHECK_EQ(value, result); |
| } |
| } else { |
| CHECK(expectations == EXPECT_EXCEPTION); |
| CHECK(catcher.HasCaught()); |
| if (!value.IsEmpty()) { |
| CHECK_EQ(value, catcher.Exception()); |
| } |
| } |
| } |
| |
| |
| v8::Handle<Value> DeclarationContext::HandleGet(Local<String> key, |
| const AccessorInfo& info) { |
| DeclarationContext* context = GetInstance(info); |
| context->get_count_++; |
| return context->Get(key); |
| } |
| |
| |
| v8::Handle<Value> DeclarationContext::HandleSet(Local<String> key, |
| Local<Value> value, |
| const AccessorInfo& info) { |
| DeclarationContext* context = GetInstance(info); |
| context->set_count_++; |
| return context->Set(key, value); |
| } |
| |
| |
| v8::Handle<Boolean> DeclarationContext::HandleHas(Local<String> key, |
| const AccessorInfo& info) { |
| DeclarationContext* context = GetInstance(info); |
| context->has_count_++; |
| return context->Has(key); |
| } |
| |
| |
| DeclarationContext* DeclarationContext::GetInstance(const AccessorInfo& info) { |
| return static_cast<DeclarationContext*>(External::Unwrap(info.Data())); |
| } |
| |
| |
| v8::Handle<Value> DeclarationContext::Get(Local<String> key) { |
| return v8::Handle<Value>(); |
| } |
| |
| |
| v8::Handle<Value> DeclarationContext::Set(Local<String> key, |
| Local<Value> value) { |
| return v8::Handle<Value>(); |
| } |
| |
| |
| v8::Handle<Boolean> DeclarationContext::Has(Local<String> key) { |
| return v8::Handle<Boolean>(); |
| } |
| |
| |
| // Test global declaration of a property the interceptor doesn't know |
| // about and doesn't handle. |
| TEST(Unknown) { |
| HandleScope scope; |
| |
| { DeclarationContext context; |
| context.Check("var x; x", |
| 1, // access |
| 1, // declaration |
| 2, // declaration + initialization |
| EXPECT_RESULT, Undefined()); |
| } |
| |
| { DeclarationContext context; |
| context.Check("var x = 0; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Number::New(0)); |
| } |
| |
| { DeclarationContext context; |
| context.Check("function x() { }; x", |
| 1, // access |
| 1, // declaration |
| 0, |
| EXPECT_RESULT); |
| } |
| |
| { DeclarationContext context; |
| context.Check("const x; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Undefined()); |
| } |
| |
| { DeclarationContext context; |
| context.Check("const x = 0; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Undefined()); // SB 0 - BUG 1213579 |
| } |
| } |
| |
| |
| |
| class PresentPropertyContext: public DeclarationContext { |
| protected: |
| virtual v8::Handle<Boolean> Has(Local<String> key) { |
| return True(); |
| } |
| }; |
| |
| |
| |
| TEST(Present) { |
| HandleScope scope; |
| |
| { PresentPropertyContext context; |
| context.Check("var x; x", |
| 1, // access |
| 0, |
| 2, // declaration + initialization |
| EXPECT_EXCEPTION); // x is not defined! |
| } |
| |
| { PresentPropertyContext context; |
| context.Check("var x = 0; x", |
| 1, // access |
| 1, // initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Number::New(0)); |
| } |
| |
| { PresentPropertyContext context; |
| context.Check("function x() { }; x", |
| 1, // access |
| 1, // declaration |
| 0, |
| EXPECT_RESULT); |
| } |
| |
| { PresentPropertyContext context; |
| context.Check("const x; x", |
| 0, |
| 0, |
| 1, // (re-)declaration |
| EXPECT_EXCEPTION); // x has already been declared! |
| } |
| |
| { PresentPropertyContext context; |
| context.Check("const x = 0; x", |
| 0, |
| 0, |
| 1, // (re-)declaration |
| EXPECT_EXCEPTION); // x has already been declared! |
| } |
| } |
| |
| |
| |
| class AbsentPropertyContext: public DeclarationContext { |
| protected: |
| virtual v8::Handle<Boolean> Has(Local<String> key) { |
| return False(); |
| } |
| }; |
| |
| |
| TEST(Absent) { |
| HandleScope scope; |
| |
| { AbsentPropertyContext context; |
| context.Check("var x; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Undefined()); |
| } |
| |
| { AbsentPropertyContext context; |
| context.Check("var x = 0; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Number::New(0)); |
| } |
| |
| { AbsentPropertyContext context; |
| context.Check("function x() { }; x", |
| 1, // access |
| 1, // declaration |
| 0, |
| EXPECT_RESULT); |
| } |
| |
| { AbsentPropertyContext context; |
| context.Check("const x; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initializetion |
| EXPECT_RESULT, Undefined()); |
| } |
| |
| { AbsentPropertyContext context; |
| context.Check("const x = 0; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Undefined()); // SB 0 - BUG 1213579 |
| } |
| |
| { AbsentPropertyContext context; |
| context.Check("if (false) { var x = 0 }; x", |
| 1, // access |
| 1, // declaration |
| 1, // declaration + initialization |
| EXPECT_RESULT, Undefined()); |
| } |
| } |
| |
| |
| |
| class AppearingPropertyContext: public DeclarationContext { |
| public: |
| enum State { |
| DECLARE, |
| INITIALIZE_IF_ASSIGN, |
| UNKNOWN |
| }; |
| |
| AppearingPropertyContext() : state_(DECLARE) { } |
| |
| protected: |
| virtual v8::Handle<Boolean> Has(Local<String> key) { |
| switch (state_) { |
| case DECLARE: |
| // Force declaration by returning that the |
| // property is absent. |
| state_ = INITIALIZE_IF_ASSIGN; |
| return False(); |
| case INITIALIZE_IF_ASSIGN: |
| // Return that the property is present so we only get the |
| // setter called when initializing with a value. |
| state_ = UNKNOWN; |
| return True(); |
| default: |
| CHECK(state_ == UNKNOWN); |
| break; |
| } |
| // Do the lookup in the object. |
| return v8::Local<Boolean>(); |
| } |
| |
| private: |
| State state_; |
| }; |
| |
| |
| TEST(Appearing) { |
| HandleScope scope; |
| |
| { AppearingPropertyContext context; |
| context.Check("var x; x", |
| 1, // access |
| 1, // declaration |
| 2, // declaration + initialization |
| EXPECT_RESULT, Undefined()); |
| } |
| |
| { AppearingPropertyContext context; |
| context.Check("var x = 0; x", |
| 1, // access |
| 2, // declaration + initialization |
| 2, // declaration + initialization |
| EXPECT_RESULT, Number::New(0)); |
| } |
| |
| { AppearingPropertyContext context; |
| context.Check("function x() { }; x", |
| 1, // access |
| 1, // declaration |
| 0, |
| EXPECT_RESULT); |
| } |
| |
| { AppearingPropertyContext context; |
| context.Check("const x; x", |
| 0, |
| 1, // declaration |
| 2, // declaration + initialization |
| EXPECT_EXCEPTION); // x has already been declared! |
| } |
| |
| { AppearingPropertyContext context; |
| context.Check("const x = 0; x", |
| 0, |
| 1, // declaration |
| 2, // declaration + initialization |
| EXPECT_EXCEPTION); // x has already been declared! |
| } |
| } |
| |
| |
| |
| class ReappearingPropertyContext: public DeclarationContext { |
| public: |
| enum State { |
| DECLARE, |
| DONT_DECLARE, |
| INITIALIZE, |
| UNKNOWN |
| }; |
| |
| ReappearingPropertyContext() : state_(DECLARE) { } |
| |
| protected: |
| virtual v8::Handle<Boolean> Has(Local<String> key) { |
| switch (state_) { |
| case DECLARE: |
| // Force the first declaration by returning that |
| // the property is absent. |
| state_ = DONT_DECLARE; |
| return False(); |
| case DONT_DECLARE: |
| // Ignore the second declaration by returning |
| // that the property is already there. |
| state_ = INITIALIZE; |
| return True(); |
| case INITIALIZE: |
| // Force an initialization by returning that |
| // the property is absent. This will make sure |
| // that the setter is called and it will not |
| // lead to redeclaration conflicts (yet). |
| state_ = UNKNOWN; |
| return False(); |
| default: |
| CHECK(state_ == UNKNOWN); |
| break; |
| } |
| // Do the lookup in the object. |
| return v8::Local<Boolean>(); |
| } |
| |
| private: |
| State state_; |
| }; |
| |
| |
| TEST(Reappearing) { |
| HandleScope scope; |
| |
| { ReappearingPropertyContext context; |
| context.Check("const x; var x = 0", |
| 0, |
| 2, // var declaration + const initialization |
| 4, // 2 x declaration + 2 x initialization |
| EXPECT_EXCEPTION); // x has already been declared! |
| } |
| } |
| |
| |
| |
| class ExistsInPrototypeContext: public DeclarationContext { |
| protected: |
| virtual v8::Handle<Boolean> Has(Local<String> key) { |
| // Let it seem that the property exists in the prototype object. |
| return True(); |
| } |
| |
| // Use the prototype as the holder for the interceptors. |
| virtual Local<ObjectTemplate> GetHolder(Local<FunctionTemplate> function) { |
| return function->PrototypeTemplate(); |
| } |
| }; |
| |
| |
| TEST(ExistsInPrototype) { |
| HandleScope scope; |
| |
| // Sanity check to make sure that the holder of the interceptor |
| // really is the prototype object. |
| { ExistsInPrototypeContext context; |
| context.Check("this.x = 87; this.x", |
| 0, |
| 0, |
| 0, |
| EXPECT_RESULT, Number::New(87)); |
| } |
| |
| { ExistsInPrototypeContext context; |
| context.Check("var x; x", |
| 1, // get |
| 0, |
| 1, // declaration |
| EXPECT_EXCEPTION); |
| } |
| |
| { ExistsInPrototypeContext context; |
| context.Check("var x = 0; x", |
| 0, |
| 0, |
| 1, // declaration |
| EXPECT_RESULT, Number::New(0)); |
| } |
| |
| { ExistsInPrototypeContext context; |
| context.Check("const x; x", |
| 0, |
| 0, |
| 1, // declaration |
| EXPECT_RESULT, Undefined()); |
| } |
| |
| { ExistsInPrototypeContext context; |
| context.Check("const x = 0; x", |
| 0, |
| 0, |
| 1, // declaration |
| EXPECT_RESULT, Number::New(0)); |
| } |
| } |
| |
| |
| |
| class AbsentInPrototypeContext: public DeclarationContext { |
| protected: |
| virtual v8::Handle<Boolean> Has(Local<String> key) { |
| // Let it seem that the property is absent in the prototype object. |
| return False(); |
| } |
| |
| // Use the prototype as the holder for the interceptors. |
| virtual Local<ObjectTemplate> GetHolder(Local<FunctionTemplate> function) { |
| return function->PrototypeTemplate(); |
| } |
| }; |
| |
| |
| TEST(AbsentInPrototype) { |
| HandleScope scope; |
| |
| { AbsentInPrototypeContext context; |
| context.Check("if (false) { var x = 0; }; x", |
| 0, |
| 0, |
| 1, // declaration |
| EXPECT_RESULT, Undefined()); |
| } |
| } |
