DevTools: generate string16-based handlers for v8_inspector.

third_party/WebKit/Source/platform/inspector_protocol/Values.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/inspector_protocol/Values.h"
 
 #include "platform/Decimal.h"
 #include "platform/inspector_protocol/Parser.h"
-#include "wtf/text/StringBuilder.h"
+#include "platform/inspector_protocol/String16.h"
 #include <cmath>
 
 namespace blink {
 namespace protocol {
 
 namespace {
 
 const char* const nullString = "null";
 const char* const trueString = "true";
 const char* const falseString = "false";
 
-inline bool escapeChar(UChar c, StringBuilder* dst)
+inline bool escapeChar(UChar c, String16Builder* dst)
 {
     switch (c) {
-    case '\b': dst->appendLiteral("\\b"); break;
-    case '\f': dst->appendLiteral("\\f"); break;
-    case '\n': dst->appendLiteral("\\n"); break;
-    case '\r': dst->appendLiteral("\\r"); break;
-    case '\t': dst->appendLiteral("\\t"); break;
-    case '\\': dst->appendLiteral("\\\\"); break;
-    case '"': dst->appendLiteral("\\\""); break;
+    case '\b': dst->append("\\b"); break;
+    case '\f': dst->append("\\f"); break;
+    case '\n': dst->append("\\n"); break;
+    case '\r': dst->append("\\r"); break;
+    case '\t': dst->append("\\t"); break;
+    case '\\': dst->append("\\\\"); break;
+    case '"': dst->append("\\\""); break;
     default:
         return false;
     }
     return true;
 }
 
-void escapeStringForJSON(const String& str, StringBuilder* dst)
+const LChar hexDigits[17] = "0123456789ABCDEF";
+
+void appendUnsignedAsHex(unsigned number, String16Builder* dst)

[dgozman, 2016/03/08 01:35:12]

UChar number

+{
+    dst->append("\\u");
+    for (size_t i = 0; i < 4; ++i) {
+        dst->append(hexDigits[(number & 0xF000) >> 12]);
+        number <<= 4;
+    }
+}
+
+void escapeStringForJSON(const String16& str, String16Builder* dst)
 {
     for (unsigned i = 0; i < str.length(); ++i) {
         UChar c = str[i];
         if (!escapeChar(c, dst)) {
             if (c < 32 || c > 126 || c == '<' || c == '>') {
                 // 1. Escaping <, > to prevent script execution.
                 // 2. Technically, we could also pass through c > 126 as UTF8, but this
                 //    is also optional. It would also be a pain to implement here.
-                unsigned symbol = static_cast<unsigned>(c);
-                String symbolCode = String::format("\\u%04X", symbol);
-                dst->append(symbolCode);
+                appendUnsignedAsHex(static_cast<unsigned>(c), dst);
             } else {
                 dst->append(c);
             }
         }
     }
 }
 
-void doubleQuoteStringForJSON(const String& str, StringBuilder* dst)
+void doubleQuoteStringForJSON(const String16& str, String16Builder* dst)
 {
     dst->append('"');
     escapeStringForJSON(str, dst);
     dst->append('"');
 }
 
 } // anonymous namespace
 
 bool Value::asBoolean(bool*) const
 {
     return false;
 }
 
 bool Value::asNumber(double*) const
 {
     return false;
 }
 
 bool Value::asNumber(int*) const
 {
     return false;
 }
 
-bool Value::asString(String*) const
+bool Value::asString(String16*) const
 {
     return false;
 }
 
-String Value::toJSONString() const
+String16 Value::toJSONString() const
 {
-    StringBuilder result;
+    String16Builder result;
     result.reserveCapacity(512);
     writeJSON(&result);
     return result.toString();
 }
 
-void Value::writeJSON(StringBuilder* output) const
+void Value::writeJSON(String16Builder* output) const
 {
     ASSERT(m_type == TypeNull);
     output->append(nullString, 4);
 }
 
 PassOwnPtr<Value> Value::clone() const
 {
     return Value::null();
 }
 
@@ skipping 14 matching lines @@
 }
 
 bool FundamentalValue::asNumber(int* output) const
 {
     if (type() != TypeNumber)
         return false;
     *output = static_cast<int>(m_doubleValue);
     return true;
 }
 
-void FundamentalValue::writeJSON(StringBuilder* output) const
+void FundamentalValue::writeJSON(String16Builder* output) const
 {
     ASSERT(type() == TypeBoolean || type() == TypeNumber);
     if (type() == TypeBoolean) {
         if (m_boolValue)
             output->append(trueString, 4);
         else
             output->append(falseString, 5);
     } else if (type() == TypeNumber) {
         if (!std::isfinite(m_doubleValue)) {
             output->append(nullString, 4);
             return;
         }
         output->append(Decimal::fromDouble(m_doubleValue).toString());
     }
 }
 
 PassOwnPtr<Value> FundamentalValue::clone() const
 {
     return type() == TypeNumber ? FundamentalValue::create(m_doubleValue) : FundamentalValue::create(m_boolValue);
 }
 
-bool StringValue::asString(String* output) const
+bool StringValue::asString(String16* output) const
 {
     *output = m_stringValue;
     return true;
 }
 
-void StringValue::writeJSON(StringBuilder* output) const
+void StringValue::writeJSON(String16Builder* output) const
 {
     ASSERT(type() == TypeString);
     doubleQuoteStringForJSON(m_stringValue, output);
 }
 
 PassOwnPtr<Value> StringValue::clone() const
 {
     return StringValue::create(m_stringValue);
 }
 
 DictionaryValue::~DictionaryValue()
 {
 }
 
-void DictionaryValue::setBoolean(const String& name, bool value)
+void DictionaryValue::setBoolean(const String16& name, bool value)
 {
     setValue(name, FundamentalValue::create(value));
 }
 
-void DictionaryValue::setNumber(const String& name, double value)
+void DictionaryValue::setNumber(const String16& name, double value)
 {
     setValue(name, FundamentalValue::create(value));
 }
 
-void DictionaryValue::setString(const String& name, const String& value)
+void DictionaryValue::setString(const String16& name, const String16& value)
 {
     setValue(name, StringValue::create(value));
 }
 
-void DictionaryValue::setValue(const String& name, PassOwnPtr<Value> value)
+void DictionaryValue::setValue(const String16& name, PassOwnPtr<Value> value)
 {
     ASSERT(value);
     if (m_data.set(name, value))
         m_order.append(name);
 }
 
-void DictionaryValue::setObject(const String& name, PassOwnPtr<DictionaryValue> value)
+void DictionaryValue::setObject(const String16& name, PassOwnPtr<DictionaryValue> value)
 {
     ASSERT(value);
     if (m_data.set(name, value))
         m_order.append(name);
 }
 
-void DictionaryValue::setArray(const String& name, PassOwnPtr<ListValue> value)
+void DictionaryValue::setArray(const String16& name, PassOwnPtr<ListValue> value)
 {
     ASSERT(value);
     if (m_data.set(name, value))
         m_order.append(name);
 }
 
-bool DictionaryValue::getBoolean(const String& name, bool* output) const
+bool DictionaryValue::getBoolean(const String16& name, bool* output) const
 {
     protocol::Value* value = get(name);
     if (!value)
         return false;
     return value->asBoolean(output);
 }
 
-bool DictionaryValue::getString(const String& name, String* output) const
+bool DictionaryValue::getString(const String16& name, String16* output) const
 {
     protocol::Value* value = get(name);
     if (!value)
         return false;
     return value->asString(output);
 }
 
-DictionaryValue* DictionaryValue::getObject(const String& name) const
+DictionaryValue* DictionaryValue::getObject(const String16& name) const
 {
     return DictionaryValue::cast(get(name));
 }
 
-protocol::ListValue* DictionaryValue::getArray(const String& name) const
+protocol::ListValue* DictionaryValue::getArray(const String16& name) const
 {
     return ListValue::cast(get(name));
 }
 
-protocol::Value* DictionaryValue::get(const String& name) const
+protocol::Value* DictionaryValue::get(const String16& name) const
 {
     Dictionary::const_iterator it = m_data.find(name);
     if (it == m_data.end())
         return nullptr;
     return it->second;
 }
 
 DictionaryValue::Entry DictionaryValue::at(size_t index) const
 {
-    String key = m_order[index];
+    String16 key = m_order[index];
     return std::make_pair(key, m_data.get(key));
 }
 
-bool DictionaryValue::booleanProperty(const String& name, bool defaultValue) const
+bool DictionaryValue::booleanProperty(const String16& name, bool defaultValue) const
 {
     bool result = defaultValue;
     getBoolean(name, &result);
     return result;
 }
 
-void DictionaryValue::remove(const String& name)
+void DictionaryValue::remove(const String16& name)
 {
     m_data.remove(name);
     for (size_t i = 0; i < m_order.size(); ++i) {
         if (m_order[i] == name) {
             m_order.remove(i);
             break;
         }
     }
 }
 
-void DictionaryValue::writeJSON(StringBuilder* output) const
+void DictionaryValue::writeJSON(String16Builder* output) const
 {
     output->append('{');
     for (size_t i = 0; i < m_order.size(); ++i) {
         Dictionary::const_iterator it = m_data.find(m_order[i]);
         ASSERT_WITH_SECURITY_IMPLICATION(it != m_data.end());
         if (i)
             output->append(',');
         doubleQuoteStringForJSON(it->first, output);
         output->append(':');
         it->second->writeJSON(output);
     }
     output->append('}');
 }
 
 PassOwnPtr<Value> DictionaryValue::clone() const
 {
     OwnPtr<DictionaryValue> result = DictionaryValue::create();
     for (size_t i = 0; i < m_order.size(); ++i) {
-        String key = m_order[i];
+        String16 key = m_order[i];
         Value* value = m_data.get(key);
         ASSERT(value);
         result->setValue(key, value->clone());
     }
     return result.release();
 }
 
 DictionaryValue::DictionaryValue()
     : Value(TypeObject)
 {
 }
 
 ListValue::~ListValue()
 {
 }
 
-void ListValue::writeJSON(StringBuilder* output) const
+void ListValue::writeJSON(String16Builder* output) const
 {
     output->append('[');
     for (Vector<OwnPtr<protocol::Value>>::const_iterator it = m_data.begin(); it != m_data.end(); ++it) {
         if (it != m_data.begin())
             output->append(',');
         (*it)->writeJSON(output);
     }
     output->append(']');
 }
 
@@ skipping 17 matching lines @@
 }
 
 protocol::Value* ListValue::at(size_t index)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(index < m_data.size());
     return m_data[index].get();
 }
 
 } // namespace protocol
 } // namespace blink