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-rw-r--r--webkit/plugins/ppapi/v8_var_converter.cc423
1 files changed, 0 insertions, 423 deletions
diff --git a/webkit/plugins/ppapi/v8_var_converter.cc b/webkit/plugins/ppapi/v8_var_converter.cc
deleted file mode 100644
index a8952ff..0000000
--- a/webkit/plugins/ppapi/v8_var_converter.cc
+++ /dev/null
@@ -1,423 +0,0 @@
-// Copyright (c) 2013 The Chromium 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 "webkit/plugins/ppapi/v8_var_converter.h"
-
-#include <map>
-#include <stack>
-#include <string>
-
-#include "base/hash_tables.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "ppapi/shared_impl/array_var.h"
-#include "ppapi/shared_impl/dictionary_var.h"
-#include "ppapi/shared_impl/var.h"
-#include "ppapi/shared_impl/var_tracker.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebArrayBuffer.h"
-#include "webkit/plugins/ppapi/host_array_buffer_var.h"
-
-using ppapi::ArrayBufferVar;
-using ppapi::ArrayVar;
-using ppapi::DictionaryVar;
-using ppapi::ScopedPPVar;
-using ppapi::StringVar;
-using std::make_pair;
-
-namespace {
-
-struct HashedHandle {
- HashedHandle(v8::Handle<v8::Object> h) : handle(h) {}
- size_t hash() const { return handle->GetIdentityHash(); }
- bool operator==(const HashedHandle& h) const { return handle == h.handle; }
- bool operator<(const HashedHandle& h) const { return hash() < h.hash(); }
- v8::Handle<v8::Object> handle;
-};
-
-} // namespace
-
-namespace BASE_HASH_NAMESPACE {
-#if defined(COMPILER_GCC)
-template <>
-struct hash<HashedHandle> {
- size_t operator()(const HashedHandle& handle) const {
- return handle.hash();
- }
-};
-#elif defined(COMPILER_MSVC)
-inline size_t hash_value(const HashedHandle& handle) {
- return handle.hash();
-}
-#endif
-} // namespace BASE_HASH_NAMESPACE
-
-namespace webkit {
-namespace ppapi {
-
-namespace {
-
-// Maps PP_Var IDs to the V8 value handle they correspond to.
-typedef base::hash_map<int64_t, v8::Handle<v8::Value> > VarHandleMap;
-
-// Maps V8 value handles to the PP_Var they correspond to.
-typedef base::hash_map<HashedHandle, ScopedPPVar> HandleVarMap;
-
-// Returns a V8 value which corresponds to a given PP_Var. If |var| is a
-// reference counted PP_Var type, and it exists in |visited_ids|, the V8 value
-// associated with it in the map will be returned, otherwise a new V8 value will
-// be created and added to the map. |did_create| indicates whether a new v8
-// value was created as a result of calling the function.
-bool GetOrCreateV8Value(const PP_Var& var,
- v8::Handle<v8::Value>* result,
- bool* did_create,
- VarHandleMap* visited_ids) {
- *did_create = false;
-
- if (::ppapi::VarTracker::IsVarTypeRefcounted(var.type)) {
- VarHandleMap::iterator it = visited_ids->find(var.value.as_id);
- if (it != visited_ids->end()) {
- *result = it->second;
- return true;
- }
- }
-
- switch (var.type) {
- case PP_VARTYPE_UNDEFINED:
- *result = v8::Undefined();
- break;
- case PP_VARTYPE_NULL:
- *result = v8::Null();
- break;
- case PP_VARTYPE_BOOL:
- *result = (var.value.as_bool == PP_TRUE) ? v8::True() : v8::False();
- break;
- case PP_VARTYPE_INT32:
- *result = v8::Integer::New(var.value.as_int);
- break;
- case PP_VARTYPE_DOUBLE:
- *result = v8::Number::New(var.value.as_double);
- break;
- case PP_VARTYPE_STRING: {
- StringVar* string = StringVar::FromPPVar(var);
- if (!string) {
- NOTREACHED();
- result->Clear();
- return false;
- }
- const std::string& value = string->value();
- // Create a string object rather than a string primitive. This allows us
- // to have multiple references to the same string in javascript, which
- // matches the reference behavior of PP_Vars.
- *result = v8::String::New(value.c_str(), value.size())->ToObject();
- break;
- }
- case PP_VARTYPE_ARRAY_BUFFER: {
- ArrayBufferVar* buffer = ArrayBufferVar::FromPPVar(var);
- if (!buffer) {
- NOTREACHED();
- result->Clear();
- return false;
- }
- HostArrayBufferVar* host_buffer =
- static_cast<HostArrayBufferVar*>(buffer);
- *result =
- v8::Local<v8::Value>::New(host_buffer->webkit_buffer().toV8Value());
- break;
- }
- case PP_VARTYPE_ARRAY:
- *result = v8::Array::New();
- break;
- case PP_VARTYPE_DICTIONARY:
- *result = v8::Object::New();
- break;
- case PP_VARTYPE_OBJECT:
- NOTREACHED();
- result->Clear();
- return false;
- }
-
- *did_create = true;
- if (::ppapi::VarTracker::IsVarTypeRefcounted(var.type))
- (*visited_ids)[var.value.as_id] = *result;
- return true;
-}
-
-// For a given V8 value handle, this returns a PP_Var which corresponds to it.
-// If the handle already exists in |visited_handles|, the PP_Var associated with
-// it will be returned, otherwise a new V8 value will be created and added to
-// the map. |did_create| indicates if a new PP_Var was created as a result of
-// calling the function.
-bool GetOrCreateVar(v8::Handle<v8::Value> val,
- PP_Var* result,
- bool* did_create,
- HandleVarMap* visited_handles) {
- CHECK(!val.IsEmpty());
- *did_create = false;
-
- // Even though every v8 string primitive encountered will be a unique object,
- // we still add them to |visited_handles| so that the corresponding string
- // PP_Var created will be properly refcounted.
- if (val->IsObject() || val->IsString()) {
- HandleVarMap::const_iterator it = visited_handles->find(
- HashedHandle(val->ToObject()));
- if (it != visited_handles->end()) {
- *result = it->second.get();
- return true;
- }
- }
-
- if (val->IsUndefined()) {
- *result = PP_MakeUndefined();
- } else if (val->IsNull()) {
- *result = PP_MakeNull();
- } else if (val->IsBoolean() || val->IsBooleanObject()) {
- *result = PP_MakeBool(PP_FromBool(val->ToBoolean()->Value()));
- } else if (val->IsInt32()) {
- *result = PP_MakeInt32(val->ToInt32()->Value());
- } else if (val->IsNumber() || val->IsNumberObject()) {
- *result = PP_MakeDouble(val->ToNumber()->Value());
- } else if (val->IsString() || val->IsStringObject()) {
- v8::String::Utf8Value utf8(val->ToString());
- *result = StringVar::StringToPPVar(std::string(*utf8, utf8.length()));
- } else if (val->IsArray()) {
- *result = (new ArrayVar())->GetPPVar();
- } else if (val->IsObject()) {
- scoped_ptr<WebKit::WebArrayBuffer> web_array_buffer(
- WebKit::WebArrayBuffer::createFromV8Value(val));
- if (web_array_buffer.get()) {
- scoped_refptr<HostArrayBufferVar> buffer_var(new HostArrayBufferVar(
- *web_array_buffer));
- *result = buffer_var->GetPPVar();
- } else {
- *result = (new DictionaryVar())->GetPPVar();
- }
- } else {
- NOTREACHED();
- return false;
- }
-
- *did_create = true;
- if (val->IsObject() || val->IsString()) {
- visited_handles->insert(make_pair(
- HashedHandle(val->ToObject()),
- ScopedPPVar(ScopedPPVar::PassRef(), *result)));
- }
- return true;
-}
-
-} // namespace
-
-V8VarConverter::V8VarConverter() {
-}
-
-bool V8VarConverter::ToV8Value(const PP_Var& var,
- v8::Handle<v8::Context> context,
- v8::Handle<v8::Value>* result) const {
- v8::Context::Scope context_scope(context);
- v8::HandleScope handle_scope;
-
- VarHandleMap visited_ids;
-
- std::stack<PP_Var> stack;
- stack.push(var);
- v8::Handle<v8::Value> root;
- bool is_root = true;
-
- while (!stack.empty()) {
- const PP_Var& current_var = stack.top();
- v8::Handle<v8::Value> current_v8;
- stack.pop();
- bool did_create = false;
- if (!GetOrCreateV8Value(current_var, &current_v8, &did_create,
- &visited_ids)) {
- return false;
- }
-
- if (is_root) {
- is_root = false;
- root = current_v8;
- }
-
- // Add child nodes to the stack.
- if (current_var.type == PP_VARTYPE_ARRAY) {
- ArrayVar* array_var = ArrayVar::FromPPVar(current_var);
- if (!array_var) {
- NOTREACHED();
- return false;
- }
- DCHECK(current_v8->IsArray());
- v8::Handle<v8::Array> v8_array = current_v8.As<v8::Array>();
-
- for (size_t i = 0; i < array_var->elements().size(); ++i) {
- const PP_Var& child_var = array_var->elements()[i].get();
- v8::Handle<v8::Value> child_v8;
- if (!GetOrCreateV8Value(child_var, &child_v8, &did_create,
- &visited_ids)) {
- return false;
- }
- if (did_create &&
- (child_var.type == PP_VARTYPE_DICTIONARY ||
- child_var.type == PP_VARTYPE_ARRAY)) {
- stack.push(child_var);
- }
- v8::TryCatch try_catch;
- v8_array->Set(static_cast<uint32>(i), child_v8);
- if (try_catch.HasCaught()) {
- LOG(ERROR) << "Setter for index " << i << " threw an exception.";
- return false;
- }
- }
- } else if (current_var.type == PP_VARTYPE_DICTIONARY) {
- DictionaryVar* dict_var = DictionaryVar::FromPPVar(current_var);
- if (!dict_var) {
- NOTREACHED();
- return false;
- }
- DCHECK(current_v8->IsObject());
- v8::Handle<v8::Object> v8_object = current_v8->ToObject();
-
- for (DictionaryVar::KeyValueMap::const_iterator iter =
- dict_var->key_value_map().begin();
- iter != dict_var->key_value_map().end();
- ++iter) {
- const std::string& key = iter->first;
- const PP_Var& child_var = iter->second.get();
- v8::Handle<v8::Value> child_v8;
- if (!GetOrCreateV8Value(child_var, &child_v8, &did_create,
- &visited_ids)) {
- return false;
- }
- if (did_create &&
- (child_var.type == PP_VARTYPE_DICTIONARY ||
- child_var.type == PP_VARTYPE_ARRAY)) {
- stack.push(child_var);
- }
- v8::TryCatch try_catch;
- v8_object->Set(v8::String::New(key.c_str(), key.length()), child_v8);
- if (try_catch.HasCaught()) {
- LOG(ERROR) << "Setter for property " << key.c_str() << " threw an "
- << "exception.";
- return false;
- }
- }
- }
- }
-
- *result = handle_scope.Close(root);
- return true;
-}
-
-bool V8VarConverter::FromV8Value(v8::Handle<v8::Value> val,
- v8::Handle<v8::Context> context,
- PP_Var* result) const {
- v8::Context::Scope context_scope(context);
- v8::HandleScope handle_scope;
-
- HandleVarMap visited_handles;
-
- std::stack<v8::Handle<v8::Value> > stack;
- stack.push(val);
- ScopedPPVar root;
- bool is_root = true;
-
- while (!stack.empty()) {
- v8::Handle<v8::Value> current_v8 = stack.top();
- PP_Var current_var;
- stack.pop();
- bool did_create = false;
- if (!GetOrCreateVar(current_v8, &current_var, &did_create,
- &visited_handles)) {
- return false;
- }
-
- if (is_root) {
- is_root = false;
- root = current_var;
- }
-
- // Add child nodes to the stack.
- if (current_var.type == PP_VARTYPE_ARRAY) {
- DCHECK(current_v8->IsArray());
- v8::Handle<v8::Array> v8_array = current_v8.As<v8::Array>();
-
- ArrayVar* array_var = ArrayVar::FromPPVar(current_var);
- if (!array_var) {
- NOTREACHED();
- return false;
- }
-
- for (uint32 i = 0; i < v8_array->Length(); ++i) {
- v8::TryCatch try_catch;
- v8::Handle<v8::Value> child_v8 = v8_array->Get(i);
- if (try_catch.HasCaught())
- return false;
-
- if (!v8_array->HasRealIndexedProperty(i))
- continue;
-
- PP_Var child_var;
- if (!GetOrCreateVar(child_v8, &child_var, &did_create,
- &visited_handles)) {
- // Silently ignore the case where we can't convert to a Var as we may
- // be trying to convert a type that doesn't have a corresponding
- // PP_Var type.
- continue;
- }
- if (did_create && child_v8->IsObject())
- stack.push(child_v8);
-
- array_var->Set(i, child_var);
- }
- } else if (current_var.type == PP_VARTYPE_DICTIONARY) {
- DCHECK(current_v8->IsObject());
- v8::Handle<v8::Object> v8_object = current_v8->ToObject();
-
- DictionaryVar* dict_var = DictionaryVar::FromPPVar(current_var);
- if (!dict_var) {
- NOTREACHED();
- return false;
- }
-
- v8::Handle<v8::Array> property_names(v8_object->GetOwnPropertyNames());
- for (uint32 i = 0; i < property_names->Length(); ++i) {
- v8::Handle<v8::Value> key(property_names->Get(i));
-
- // Extend this test to cover more types as necessary and if sensible.
- if (!key->IsString() && !key->IsNumber()) {
- NOTREACHED() << "Key \"" << *v8::String::AsciiValue(key) << "\" "
- "is neither a string nor a number";
- return false;
- }
-
- // Skip all callbacks: crbug.com/139933
- if (v8_object->HasRealNamedCallbackProperty(key->ToString()))
- continue;
-
- v8::String::Utf8Value name_utf8(key->ToString());
-
- v8::TryCatch try_catch;
- v8::Handle<v8::Value> child_v8 = v8_object->Get(key);
- if (try_catch.HasCaught())
- return false;
-
- PP_Var child_var;
- if (!GetOrCreateVar(child_v8, &child_var, &did_create,
- &visited_handles)) {
- continue;
- }
- if (did_create && child_v8->IsObject())
- stack.push(child_v8);
-
- bool success = dict_var->SetWithStringKey(
- std::string(*name_utf8, name_utf8.length()), child_var);
- DCHECK(success);
- }
- }
- }
- *result = root.Release();
- return true;
-}
-
-} // namespace ppapi
-} // namespace webkit
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