[inspector] Initial import of v8_inspector.

src/inspector/StringUtil.cpp

Index: src/inspector/StringUtil.cpp
diff --git a/src/inspector/StringUtil.cpp b/src/inspector/StringUtil.cpp
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index 0000000000000000000000000000000000000000..46feb6fafc1266ed3528ca745672a4b543a8be0f
--- /dev/null
+++ b/src/inspector/StringUtil.cpp
@@ -0,0 +1,195 @@
+// Copyright 2016 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/inspector/StringUtil.h"
+
+#include "src/inspector/protocol/Protocol.h"
+
+namespace v8_inspector {
+
+v8::Local<v8::String> toV8String(v8::Isolate* isolate, const String16& string) {
+  if (string.isEmpty()) return v8::String::Empty(isolate);
+  return v8::String::NewFromTwoByte(
+             isolate, reinterpret_cast<const uint16_t*>(string.characters16()),
+             v8::NewStringType::kNormal, string.length())
+      .ToLocalChecked();
+}
+
+v8::Local<v8::String> toV8StringInternalized(v8::Isolate* isolate,
+                                             const String16& string) {
+  if (string.isEmpty()) return v8::String::Empty(isolate);
+  return v8::String::NewFromTwoByte(
+             isolate, reinterpret_cast<const uint16_t*>(string.characters16()),
+             v8::NewStringType::kInternalized, string.length())
+      .ToLocalChecked();
+}
+
+v8::Local<v8::String> toV8StringInternalized(v8::Isolate* isolate,
+                                             const char* str) {
+  return v8::String::NewFromUtf8(isolate, str, v8::NewStringType::kInternalized)
+      .ToLocalChecked();
+}
+
+v8::Local<v8::String> toV8String(v8::Isolate* isolate,
+                                 const StringView& string) {
+  if (!string.length()) return v8::String::Empty(isolate);
+  if (string.is8Bit())
+    return v8::String::NewFromOneByte(
+               isolate, reinterpret_cast<const uint8_t*>(string.characters8()),
+               v8::NewStringType::kNormal, string.length())
+        .ToLocalChecked();
+  return v8::String::NewFromTwoByte(
+             isolate, reinterpret_cast<const uint16_t*>(string.characters16()),
+             v8::NewStringType::kNormal, string.length())
+      .ToLocalChecked();
+}
+
+String16 toProtocolString(v8::Local<v8::String> value) {
+  if (value.IsEmpty() || value->IsNull() || value->IsUndefined())
+    return String16();
+  std::unique_ptr<UChar[]> buffer(new UChar[value->Length()]);
+  value->Write(reinterpret_cast<uint16_t*>(buffer.get()), 0, value->Length());
+  return String16(buffer.get(), value->Length());
+}
+
+String16 toProtocolStringWithTypeCheck(v8::Local<v8::Value> value) {
+  if (value.IsEmpty() || !value->IsString()) return String16();
+  return toProtocolString(value.As<v8::String>());
+}
+
+String16 toString16(const StringView& string) {
+  if (!string.length()) return String16();
+  if (string.is8Bit())
+    return String16(reinterpret_cast<const char*>(string.characters8()),
+                    string.length());
+  return String16(reinterpret_cast<const UChar*>(string.characters16()),
+                  string.length());
+}
+
+StringView toStringView(const String16& string) {
+  if (string.isEmpty()) return StringView();
+  return StringView(reinterpret_cast<const uint16_t*>(string.characters16()),
+                    string.length());
+}
+
+bool stringViewStartsWith(const StringView& string, const char* prefix) {
+  if (!string.length()) return !(*prefix);
+  if (string.is8Bit()) {
+    for (size_t i = 0, j = 0; prefix[j] && i < string.length(); ++i, ++j) {
+      if (string.characters8()[i] != prefix[j]) return false;
+    }
+  } else {
+    for (size_t i = 0, j = 0; prefix[j] && i < string.length(); ++i, ++j) {
+      if (string.characters16()[i] != prefix[j]) return false;
+    }
+  }
+  return true;
+}
+
+namespace protocol {
+
+std::unique_ptr<protocol::Value> parseJSON(const StringView& string) {
+  if (!string.length()) return nullptr;
+  if (string.is8Bit())
+    return protocol::parseJSON(string.characters8(), string.length());
+  return protocol::parseJSON(string.characters16(), string.length());
+}
+
+std::unique_ptr<protocol::Value> parseJSON(const String16& string) {
+  if (!string.length()) return nullptr;
+  return protocol::parseJSON(string.characters16(), string.length());
+}
+
+}  // namespace protocol
+
+std::unique_ptr<protocol::Value> toProtocolValue(v8::Local<v8::Context> context,
+                                                 v8::Local<v8::Value> value,
+                                                 int maxDepth) {
+  if (value.IsEmpty()) {
+    NOTREACHED();
+    return nullptr;
+  }
+
+  if (!maxDepth) return nullptr;
+  maxDepth--;
+
+  if (value->IsNull() || value->IsUndefined()) return protocol::Value::null();
+  if (value->IsBoolean())
+    return protocol::FundamentalValue::create(value.As<v8::Boolean>()->Value());
+  if (value->IsNumber()) {
+    double doubleValue = value.As<v8::Number>()->Value();
+    int intValue = static_cast<int>(doubleValue);
+    if (intValue == doubleValue)
+      return protocol::FundamentalValue::create(intValue);
+    return protocol::FundamentalValue::create(doubleValue);
+  }
+  if (value->IsString())
+    return protocol::StringValue::create(
+        toProtocolString(value.As<v8::String>()));
+  if (value->IsArray()) {
+    v8::Local<v8::Array> array = value.As<v8::Array>();
+    std::unique_ptr<protocol::ListValue> inspectorArray =
+        protocol::ListValue::create();
+    uint32_t length = array->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      v8::Local<v8::Value> value;
+      if (!array->Get(context, i).ToLocal(&value)) return nullptr;
+      std::unique_ptr<protocol::Value> element =
+          toProtocolValue(context, value, maxDepth);
+      if (!element) return nullptr;
+      inspectorArray->pushValue(std::move(element));
+    }
+    return std::move(inspectorArray);
+  }
+  if (value->IsObject()) {
+    std::unique_ptr<protocol::DictionaryValue> jsonObject =
+        protocol::DictionaryValue::create();
+    v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
+    v8::Local<v8::Array> propertyNames;
+    if (!object->GetPropertyNames(context).ToLocal(&propertyNames))
+      return nullptr;
+    uint32_t length = propertyNames->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      v8::Local<v8::Value> name;
+      if (!propertyNames->Get(context, i).ToLocal(&name)) return nullptr;
+      // FIXME(yurys): v8::Object should support GetOwnPropertyNames
+      if (name->IsString()) {
+        v8::Maybe<bool> hasRealNamedProperty = object->HasRealNamedProperty(
+            context, v8::Local<v8::String>::Cast(name));
+        if (!hasRealNamedProperty.IsJust() || !hasRealNamedProperty.FromJust())
+          continue;
+      }
+      v8::Local<v8::String> propertyName;
+      if (!name->ToString(context).ToLocal(&propertyName)) continue;
+      v8::Local<v8::Value> property;
+      if (!object->Get(context, name).ToLocal(&property)) return nullptr;
+      std::unique_ptr<protocol::Value> propertyValue =
+          toProtocolValue(context, property, maxDepth);
+      if (!propertyValue) return nullptr;
+      jsonObject->setValue(toProtocolString(propertyName),
+                           std::move(propertyValue));
+    }
+    return std::move(jsonObject);
+  }
+  NOTREACHED();
+  return nullptr;
+}
+
+// static
+std::unique_ptr<StringBuffer> StringBuffer::create(const StringView& string) {
+  String16 owner = toString16(string);
+  return StringBufferImpl::adopt(owner);
+}
+
+// static
+std::unique_ptr<StringBufferImpl> StringBufferImpl::adopt(String16& string) {
+  return wrapUnique(new StringBufferImpl(string));
+}
+
+StringBufferImpl::StringBufferImpl(String16& string) {
+  m_owner.swap(string);
+  m_string = toStringView(m_owner);
+}
+
+}  // namespace v8_inspector