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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef PPAPI_CPP_VAR_H_ | 5 #ifndef PPAPI_CPP_VAR_H_ |
| 6 #define PPAPI_CPP_VAR_H_ | 6 #define PPAPI_CPP_VAR_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "ppapi/c/pp_module.h" | 11 #include "ppapi/c/pp_module.h" |
| 12 #include "ppapi/c/pp_var.h" | 12 #include "ppapi/c/pp_var.h" |
| 13 | 13 |
| 14 namespace pp { | 14 namespace pp { |
| 15 | 15 |
| 16 class Instance; | 16 class Instance; |
| 17 | 17 |
| 18 #ifndef PPAPI_VAR_REMOVE_SCRIPTING | |
| 19 namespace deprecated { | |
| 20 class ScriptableObject; | |
| 21 } | |
| 22 #endif | |
| 23 | |
| 24 class Var { | 18 class Var { |
| 25 public: | 19 public: |
| 26 struct Null {}; // Special value passed to constructor to make NULL. | 20 struct Null {}; // Special value passed to constructor to make NULL. |
| 27 | 21 |
| 28 Var(); // PP_Var of type Undefined. | 22 Var(); // PP_Var of type Undefined. |
| 29 Var(Null); // PP_Var of type Null. | 23 Var(Null); // PP_Var of type Null. |
| 30 Var(bool b); | 24 Var(bool b); |
| 31 Var(int32_t i); | 25 Var(int32_t i); |
| 32 Var(double d); | 26 Var(double d); |
| 33 Var(const char* utf8_str); // Must be encoded in UTF-8. | 27 Var(const char* utf8_str); // Must be encoded in UTF-8. |
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| 93 // | 87 // |
| 94 // These functions will assert in debug mode and return 0 if the internal | 88 // These functions will assert in debug mode and return 0 if the internal |
| 95 // representation is not IsNumber(). | 89 // representation is not IsNumber(). |
| 96 int32_t AsInt() const; | 90 int32_t AsInt() const; |
| 97 double AsDouble() const; | 91 double AsDouble() const; |
| 98 | 92 |
| 99 // This assumes the object is of type string. If it's not, it will assert | 93 // This assumes the object is of type string. If it's not, it will assert |
| 100 // in debug mode, and return an empty string. | 94 // in debug mode, and return an empty string. |
| 101 std::string AsString() const; | 95 std::string AsString() const; |
| 102 | 96 |
| 103 #ifndef PPAPI_VAR_REMOVE_SCRIPTING | |
| 104 // Takes ownership of the given pointer. | |
| 105 Var(Instance* instance, deprecated::ScriptableObject* object); | |
| 106 | |
| 107 // This assumes the object is of type object. If it's not, it will assert in | |
| 108 // debug mode. If it is not an object or not a ScriptableObject type, returns | |
| 109 // NULL. | |
| 110 deprecated::ScriptableObject* AsScriptableObject() const; | |
| 111 | |
| 112 bool HasProperty(const Var& name, Var* exception = NULL) const; | |
| 113 bool HasMethod(const Var& name, Var* exception = NULL) const; | |
| 114 Var GetProperty(const Var& name, Var* exception = NULL) const; | |
| 115 void GetAllPropertyNames(std::vector<Var>* properties, | |
| 116 Var* exception = NULL) const; | |
| 117 void SetProperty(const Var& name, const Var& value, Var* exception = NULL); | |
| 118 void RemoveProperty(const Var& name, Var* exception = NULL); | |
| 119 Var Call(const Var& method_name, uint32_t argc, Var* argv, | |
| 120 Var* exception = NULL); | |
| 121 Var Construct(uint32_t argc, Var* argv, Var* exception = NULL) const; | |
| 122 | |
| 123 // Convenience functions for calling functions with small # of args. | |
| 124 Var Call(const Var& method_name, Var* exception = NULL); | |
| 125 Var Call(const Var& method_name, const Var& arg1, Var* exception = NULL); | |
| 126 Var Call(const Var& method_name, const Var& arg1, const Var& arg2, | |
| 127 Var* exception = NULL); | |
| 128 Var Call(const Var& method_name, const Var& arg1, const Var& arg2, | |
| 129 const Var& arg3, Var* exception = NULL); | |
| 130 Var Call(const Var& method_name, const Var& arg1, const Var& arg2, | |
| 131 const Var& arg3, const Var& arg4, Var* exception = NULL); | |
| 132 #endif // ifndef PPAPI_VAR_REMOVE_SCRIPTING | |
| 133 | |
| 134 // Returns a const reference to the PP_Var managed by this Var object. | 97 // Returns a const reference to the PP_Var managed by this Var object. |
| 135 const PP_Var& pp_var() const { | 98 const PP_Var& pp_var() const { |
| 136 return var_; | 99 return var_; |
| 137 } | 100 } |
| 138 | 101 |
| 139 // Detaches from the internal PP_Var of this object, keeping the reference | 102 // Detaches from the internal PP_Var of this object, keeping the reference |
| 140 // count the same. This is used when returning a PP_Var from an API function | 103 // count the same. This is used when returning a PP_Var from an API function |
| 141 // where the caller expects the return value to be AddRef'ed for it. | 104 // where the caller expects the return value to be AddRef'ed for it. |
| 142 PP_Var Detach() { | 105 PP_Var Detach() { |
| 143 PP_Var ret = var_; | 106 PP_Var ret = var_; |
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| 209 // Prevent an arbitrary pointer argument from being implicitly converted to | 172 // Prevent an arbitrary pointer argument from being implicitly converted to |
| 210 // a bool at Var construction. If somebody makes such a mistake, (s)he will | 173 // a bool at Var construction. If somebody makes such a mistake, (s)he will |
| 211 // get a compilation error. | 174 // get a compilation error. |
| 212 Var(void* non_scriptable_object_pointer); | 175 Var(void* non_scriptable_object_pointer); |
| 213 | 176 |
| 214 }; | 177 }; |
| 215 | 178 |
| 216 } // namespace pp | 179 } // namespace pp |
| 217 | 180 |
| 218 #endif // PPAPI_CPP_VAR_H_ | 181 #endif // PPAPI_CPP_VAR_H_ |
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