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// Copyright (c) 2012 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 "ppapi/shared_impl/var.h"
#include <limits>
#include "base/logging.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "ppapi/c/pp_var.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/var_tracker.h"
namespace ppapi {
// Var -------------------------------------------------------------------------
Var::Var() : var_id_(0) {
}
Var::~Var() {
}
// static
std::string Var::PPVarToLogString(PP_Var var) {
switch (var.type) {
case PP_VARTYPE_UNDEFINED:
return "[Undefined]";
case PP_VARTYPE_NULL:
return "[Null]";
case PP_VARTYPE_BOOL:
return var.value.as_bool ? "[True]" : "[False]";
case PP_VARTYPE_INT32:
return base::IntToString(var.value.as_int);
case PP_VARTYPE_DOUBLE:
return base::DoubleToString(var.value.as_double);
case PP_VARTYPE_STRING: {
StringVar* string(StringVar::FromPPVar(var));
if (!string)
return "[Invalid string]";
// Since this is for logging, escape NULLs, truncate length.
std::string result;
const size_t kTruncateAboveLength = 128;
if (string->value().size() > kTruncateAboveLength)
result = string->value().substr(0, kTruncateAboveLength) + "...";
else
result = string->value();
std::string null;
null.push_back(0);
ReplaceSubstringsAfterOffset(&result, 0, null, "\\0");
return result;
}
case PP_VARTYPE_OBJECT:
return "[Object]";
default:
return "[Invalid var]";
}
}
StringVar* Var::AsStringVar() {
return NULL;
}
ArrayBufferVar* Var::AsArrayBufferVar() {
return NULL;
}
NPObjectVar* Var::AsNPObjectVar() {
return NULL;
}
ProxyObjectVar* Var::AsProxyObjectVar() {
return NULL;
}
PP_Var Var::GetPPVar() {
int32 id = GetOrCreateVarID();
if (!id)
return PP_MakeNull();
PP_Var result;
result.type = GetType();
result.padding = 0;
result.value.as_id = id;
return result;
}
int32 Var::GetExistingVarID() const {
return var_id_;
}
int32 Var::GetOrCreateVarID() {
VarTracker* tracker = PpapiGlobals::Get()->GetVarTracker();
if (var_id_) {
if (!tracker->AddRefVar(var_id_))
return 0;
} else {
var_id_ = tracker->AddVar(this);
if (!var_id_)
return 0;
}
return var_id_;
}
void Var::AssignVarID(int32 id) {
DCHECK(!var_id_); // Must not have already been generated.
var_id_ = id;
}
// StringVar -------------------------------------------------------------------
StringVar::StringVar() {
}
StringVar::StringVar(const std::string& str)
: value_(str) {
}
StringVar::StringVar(const char* str, uint32 len)
: value_(str, len) {
}
StringVar::~StringVar() {
}
StringVar* StringVar::AsStringVar() {
return this;
}
PP_VarType StringVar::GetType() const {
return PP_VARTYPE_STRING;
}
// static
PP_Var StringVar::StringToPPVar(const std::string& var) {
return StringToPPVar(var.c_str(), var.size());
}
// static
PP_Var StringVar::StringToPPVar(const char* data, uint32 len) {
scoped_refptr<StringVar> str(new StringVar(data, len));
if (!str || !IsStringUTF8(str->value()))
return PP_MakeNull();
return str->GetPPVar();
}
// static
StringVar* StringVar::FromPPVar(PP_Var var) {
if (var.type != PP_VARTYPE_STRING)
return NULL;
scoped_refptr<Var> var_object(
PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
if (!var_object)
return NULL;
return var_object->AsStringVar();
}
// static
PP_Var StringVar::SwapValidatedUTF8StringIntoPPVar(std::string* src) {
scoped_refptr<StringVar> str(new StringVar);
str->value_.swap(*src);
return str->GetPPVar();
}
// ArrayBufferVar --------------------------------------------------------------
ArrayBufferVar::ArrayBufferVar() {
}
ArrayBufferVar::~ArrayBufferVar() {
}
ArrayBufferVar* ArrayBufferVar::AsArrayBufferVar() {
return this;
}
PP_VarType ArrayBufferVar::GetType() const {
return PP_VARTYPE_ARRAY_BUFFER;
}
// static
ArrayBufferVar* ArrayBufferVar::FromPPVar(PP_Var var) {
if (var.type != PP_VARTYPE_ARRAY_BUFFER)
return NULL;
scoped_refptr<Var> var_object(
PpapiGlobals::Get()->GetVarTracker()->GetVar(var));
if (!var_object)
return NULL;
return var_object->AsArrayBufferVar();
}
} // namespace ppapi
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