1 // Copyright 2014 The Chromium 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.
5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_STRING_H_
6 #define MOJO_PUBLIC_CPP_BINDINGS_STRING_H_
10 #include "mojo/public/cpp/bindings/lib/array_internal.h"
11 #include "mojo/public/cpp/bindings/type_converter.h"
12 #include "mojo/public/cpp/environment/logging.h"
18 typedef internal::String_Data Data_;
20 String() : is_null_(true) {}
21 String(const std::string& str) : value_(str), is_null_(false) {}
22 String(const char* chars) : is_null_(!chars) {
26 String(const char* chars, size_t num_chars)
27 : value_(chars, num_chars),
31 String(const char chars[N]) : value_(chars, N-1), is_null_(false) {}
34 static String From(const U& other) {
35 return TypeConverter<String, U>::Convert(other);
40 return TypeConverter<U, String>::Convert(*this);
43 String& operator=(const std::string& str) {
48 String& operator=(const char* chars) {
63 bool is_null() const { return is_null_; }
65 size_t size() const { return value_.size(); }
67 const char* data() const { return value_.data(); }
69 const char& at(size_t offset) const { return value_.at(offset); }
70 const char& operator[](size_t offset) const { return value_[offset]; }
72 const std::string& get() const { return value_; }
73 operator const std::string&() const { return value_; }
75 void Swap(String* other) {
76 std::swap(is_null_, other->is_null_);
77 value_.swap(other->value_);
80 void Swap(std::string* other) {
86 typedef std::string String::*Testable;
89 operator Testable() const { return is_null_ ? 0 : &String::value_; }
96 inline bool operator==(const String& a, const String& b) {
97 return a.is_null() == b.is_null() && a.get() == b.get();
99 inline bool operator==(const char* a, const String& b) {
100 return !b.is_null() && a == b.get();
102 inline bool operator==(const String& a, const char* b) {
103 return !a.is_null() && a.get() == b;
105 inline bool operator!=(const String& a, const String& b) { return !(a == b); }
106 inline bool operator!=(const char* a, const String& b) { return !(a == b); }
107 inline bool operator!=(const String& a, const char* b) { return !(a == b); }
109 inline std::ostream& operator<<(std::ostream& out, const String& s) {
110 return out << s.get();
113 // TODO(darin): Add similar variants of operator<,<=,>,>=
116 struct TypeConverter<String, std::string> {
117 static String Convert(const std::string& input) { return String(input); }
121 struct TypeConverter<std::string, String> {
122 static std::string Convert(const String& input) { return input; }
126 struct TypeConverter<String, char[N]> {
127 static String Convert(const char input[N]) {
129 return String(input, N-1);
135 struct TypeConverter<String, const char[N]> {
136 static String Convert(const char input[N]) {
138 return String(input, N-1);
143 struct TypeConverter<String, const char*> {
144 // |input| may be null, in which case a null String will be returned.
145 static String Convert(const char* input) { return String(input); }
150 #endif // MOJO_PUBLIC_CPP_BINDINGS_STRING_H_