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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 CONTENT_RENDERER_PEPPER_PEPPER_TRY_CATCH_H_ | 5 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_TRY_CATCH_H_ |
6 #define CONTENT_RENDERER_PEPPER_PEPPER_TRY_CATCH_H_ | 6 #define CONTENT_RENDERER_PEPPER_PEPPER_TRY_CATCH_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
10 #include "content/common/content_export.h" | 10 #include "content/common/content_export.h" |
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22 public: | 22 public: |
23 // PepperTryCatch objects should only be used as stack variables. This object | 23 // PepperTryCatch objects should only be used as stack variables. This object |
24 // takes a reference on the given PepperPluginInstanceImpl. | 24 // takes a reference on the given PepperPluginInstanceImpl. |
25 PepperTryCatch(PepperPluginInstanceImpl* instance, | 25 PepperTryCatch(PepperPluginInstanceImpl* instance, |
26 V8VarConverter* var_converter); | 26 V8VarConverter* var_converter); |
27 virtual ~PepperTryCatch(); | 27 virtual ~PepperTryCatch(); |
28 | 28 |
29 virtual void SetException(const char* message) = 0; | 29 virtual void SetException(const char* message) = 0; |
30 virtual bool HasException() = 0; | 30 virtual bool HasException() = 0; |
31 // Gets the context to execute scripts in. | 31 // Gets the context to execute scripts in. |
32 virtual v8::Handle<v8::Context> GetContext() = 0; | 32 virtual v8::Local<v8::Context> GetContext() = 0; |
33 | 33 |
34 // Convenience functions for doing conversions to/from V8 values and sets an | 34 // Convenience functions for doing conversions to/from V8 values and sets an |
35 // exception if there is an error in the conversion. | 35 // exception if there is an error in the conversion. |
36 v8::Handle<v8::Value> ToV8(PP_Var var); | 36 v8::Local<v8::Value> ToV8(PP_Var var); |
37 ppapi::ScopedPPVar FromV8(v8::Handle<v8::Value> v8_value); | 37 ppapi::ScopedPPVar FromV8(v8::Local<v8::Value> v8_value); |
38 | 38 |
39 protected: | 39 protected: |
40 // Make sure that |instance_| is alive for the lifetime of PepperTryCatch. | 40 // Make sure that |instance_| is alive for the lifetime of PepperTryCatch. |
41 // PepperTryCatch is used mostly in Pepper scripting code, where it can be | 41 // PepperTryCatch is used mostly in Pepper scripting code, where it can be |
42 // possible to enter JavaScript synchronously which can cause the plugin to | 42 // possible to enter JavaScript synchronously which can cause the plugin to |
43 // be deleted. | 43 // be deleted. |
44 // | 44 // |
45 // Note that PepperTryCatch objects should only ever be on the stack, so this | 45 // Note that PepperTryCatch objects should only ever be on the stack, so this |
46 // shouldn't keep the instance around for too long. | 46 // shouldn't keep the instance around for too long. |
47 scoped_refptr<PepperPluginInstanceImpl> instance_; | 47 scoped_refptr<PepperPluginInstanceImpl> instance_; |
48 | 48 |
49 V8VarConverter* var_converter_; | 49 V8VarConverter* var_converter_; |
50 }; | 50 }; |
51 | 51 |
52 // Catches var exceptions and emits a v8 exception. | 52 // Catches var exceptions and emits a v8 exception. |
53 class PepperTryCatchV8 : public PepperTryCatch { | 53 class PepperTryCatchV8 : public PepperTryCatch { |
54 public: | 54 public: |
55 PepperTryCatchV8(PepperPluginInstanceImpl* instance, | 55 PepperTryCatchV8(PepperPluginInstanceImpl* instance, |
56 V8VarConverter* var_converter, | 56 V8VarConverter* var_converter, |
57 v8::Isolate* isolate); | 57 v8::Isolate* isolate); |
58 ~PepperTryCatchV8() override; | 58 ~PepperTryCatchV8() override; |
59 | 59 |
60 bool ThrowException(); | 60 bool ThrowException(); |
61 void ThrowException(const char* message); | 61 void ThrowException(const char* message); |
62 PP_Var* exception() { return &exception_; } | 62 PP_Var* exception() { return &exception_; } |
63 | 63 |
64 // PepperTryCatch | 64 // PepperTryCatch |
65 void SetException(const char* message) override; | 65 void SetException(const char* message) override; |
66 bool HasException() override; | 66 bool HasException() override; |
67 v8::Handle<v8::Context> GetContext() override; | 67 v8::Local<v8::Context> GetContext() override; |
68 | 68 |
69 private: | 69 private: |
70 PP_Var exception_; | 70 PP_Var exception_; |
71 | 71 |
72 DISALLOW_COPY_AND_ASSIGN(PepperTryCatchV8); | 72 DISALLOW_COPY_AND_ASSIGN(PepperTryCatchV8); |
73 }; | 73 }; |
74 | 74 |
75 // Catches v8 exceptions and emits a var exception. | 75 // Catches v8 exceptions and emits a var exception. |
76 class PepperTryCatchVar : public PepperTryCatch { | 76 class PepperTryCatchVar : public PepperTryCatch { |
77 public: | 77 public: |
78 // The PP_Var exception will be placed in |exception|. The user of this class | 78 // The PP_Var exception will be placed in |exception|. The user of this class |
79 // is responsible for managing the lifetime of the exception. It is valid to | 79 // is responsible for managing the lifetime of the exception. It is valid to |
80 // pass NULL for |exception| in which case no exception will be set. | 80 // pass NULL for |exception| in which case no exception will be set. |
81 PepperTryCatchVar(PepperPluginInstanceImpl* instance, | 81 PepperTryCatchVar(PepperPluginInstanceImpl* instance, |
82 V8VarConverter* var_converter, | 82 V8VarConverter* var_converter, |
83 PP_Var* exception); | 83 PP_Var* exception); |
84 ~PepperTryCatchVar() override; | 84 ~PepperTryCatchVar() override; |
85 | 85 |
86 // PepperTryCatch | 86 // PepperTryCatch |
87 void SetException(const char* message) override; | 87 void SetException(const char* message) override; |
88 bool HasException() override; | 88 bool HasException() override; |
89 v8::Handle<v8::Context> GetContext() override; | 89 v8::Local<v8::Context> GetContext() override; |
90 | 90 |
91 private: | 91 private: |
92 // Code which uses PepperTryCatchVar doesn't typically have a HandleScope, | 92 // Code which uses PepperTryCatchVar doesn't typically have a HandleScope, |
93 // make one for them. Note that this class is always allocated on the stack. | 93 // make one for them. Note that this class is always allocated on the stack. |
94 v8::HandleScope handle_scope_; | 94 v8::HandleScope handle_scope_; |
95 | 95 |
96 v8::Handle<v8::Context> context_; | 96 v8::Local<v8::Context> context_; |
97 | 97 |
98 v8::TryCatch try_catch_; | 98 v8::TryCatch try_catch_; |
99 | 99 |
100 PP_Var* exception_; | 100 PP_Var* exception_; |
101 bool exception_is_set_; | 101 bool exception_is_set_; |
102 | 102 |
103 DISALLOW_COPY_AND_ASSIGN(PepperTryCatchVar); | 103 DISALLOW_COPY_AND_ASSIGN(PepperTryCatchVar); |
104 }; | 104 }; |
105 | 105 |
106 } // namespace content | 106 } // namespace content |
107 | 107 |
108 #endif // CONTENT_RENDERER_PEPPER_PEPPER_TRY_CATCH_H_ | 108 #endif // CONTENT_RENDERER_PEPPER_PEPPER_TRY_CATCH_H_ |
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