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      1 // Copyright 2016 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef V8_INSPECTOR_STRINGUTIL_H_
      6 #define V8_INSPECTOR_STRINGUTIL_H_
      7 
      8 #include <memory>
      9 
     10 #include "src/base/logging.h"
     11 #include "src/base/macros.h"
     12 #include "src/inspector/string-16.h"
     13 
     14 #include "include/v8-inspector.h"
     15 
     16 namespace v8_inspector {
     17 
     18 namespace protocol {
     19 
     20 class Value;
     21 
     22 using String = v8_inspector::String16;
     23 using StringBuilder = v8_inspector::String16Builder;
     24 
     25 class StringUtil {
     26  public:
     27   static String substring(const String& s, size_t pos, size_t len) {
     28     return s.substring(pos, len);
     29   }
     30   static String fromInteger(int number) { return String::fromInteger(number); }
     31   static String fromInteger(size_t number) {
     32     return String::fromInteger(number);
     33   }
     34   static String fromDouble(double number) { return String::fromDouble(number); }
     35   static size_t find(const String& s, const char* needle) {
     36     return s.find(needle);
     37   }
     38   static size_t find(const String& s, const String& needle) {
     39     return s.find(needle);
     40   }
     41   static const size_t kNotFound = String::kNotFound;
     42   static void builderAppend(StringBuilder& builder, const String& s) {
     43     builder.append(s);
     44   }
     45   static void builderAppend(StringBuilder& builder, UChar c) {
     46     builder.append(c);
     47   }
     48   static void builderAppend(StringBuilder& builder, const char* s, size_t len) {
     49     builder.append(s, len);
     50   }
     51   static void builderReserve(StringBuilder& builder, size_t capacity) {
     52     builder.reserveCapacity(capacity);
     53   }
     54   static String builderToString(StringBuilder& builder) {
     55     return builder.toString();
     56   }
     57   static std::unique_ptr<protocol::Value> parseJSON(const String16& json);
     58   static std::unique_ptr<protocol::Value> parseJSON(const StringView& json);
     59 };
     60 
     61 }  // namespace protocol
     62 
     63 v8::Local<v8::String> toV8String(v8::Isolate*, const String16&);
     64 v8::Local<v8::String> toV8StringInternalized(v8::Isolate*, const String16&);
     65 v8::Local<v8::String> toV8StringInternalized(v8::Isolate*, const char*);
     66 v8::Local<v8::String> toV8String(v8::Isolate*, const StringView&);
     67 // TODO(dgozman): rename to toString16.
     68 String16 toProtocolString(v8::Local<v8::String>);
     69 String16 toProtocolStringWithTypeCheck(v8::Local<v8::Value>);
     70 String16 toString16(const StringView&);
     71 StringView toStringView(const String16&);
     72 bool stringViewStartsWith(const StringView&, const char*);
     73 
     74 class StringBufferImpl : public StringBuffer {
     75  public:
     76   // Destroys string's content.
     77   static std::unique_ptr<StringBufferImpl> adopt(String16&);
     78   const StringView& string() override { return m_string; }
     79 
     80  private:
     81   explicit StringBufferImpl(String16&);
     82   String16 m_owner;
     83   StringView m_string;
     84 
     85   DISALLOW_COPY_AND_ASSIGN(StringBufferImpl);
     86 };
     87 
     88 }  //  namespace v8_inspector
     89 
     90 #endif  // V8_INSPECTOR_STRINGUTIL_H_
     91