[DevTools] Migrate v8_inspector/public from String16 to String{View,Buffer}.

third_party/WebKit/Source/platform/v8_inspector/V8StringUtil.cpp

 // Copyright 2016 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 "platform/v8_inspector/V8StringUtil.h"
 
+#include "platform/inspector_protocol/InspectorProtocol.h"
 #include "platform/v8_inspector/V8InspectorImpl.h"
 #include "platform/v8_inspector/V8InspectorSessionImpl.h"
 #include "platform/v8_inspector/V8Regex.h"
 
 namespace v8_inspector {
 
 namespace {
 
 String16 findMagicComment(const String16& content, const String16& name, bool multiline)
 {
@@ skipping 143 matching lines @@
     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);

[esprehn, 2016/08/23 17:35:39]

this turns null strings into Empty(), maybe that's what you want?

[dgozman, 2016/08/24 00:45:00]

Yes, empty v8 string is what we need here.

+    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;
+}
+
+std::unique_ptr<protocol::Value> parseJSON(const StringView& string)
+{
+    if (!string.length())
+        return nullptr;
+    if (string.is8Bit())
+        return blink::protocol::parseJSON(string.characters8(), string.length());
+    return blink::protocol::parseJSON(string.characters16(), string.length());
+}
+
 std::vector<std::unique_ptr<protocol::Debugger::SearchMatch>> searchInTextByLinesImpl(V8InspectorSession* session, const String16& text, const String16& query, const bool caseSensitive, const bool isRegex)
 {
     std::unique_ptr<V8Regex> regex = createSearchRegex(static_cast<V8InspectorSessionImpl*>(session)->inspector(), query, caseSensitive, isRegex);
     std::vector<std::pair<int, String16>> matches = scriptRegexpMatchesByLines(*regex.get(), text);
 
     std::vector<std::unique_ptr<protocol::Debugger::SearchMatch>> result;
     for (const auto& match : matches)
         result.push_back(buildObjectForSearchMatch(match.first, match.second));
     return result;
 }
@@ skipping 74 matching lines @@
             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