diff options
Diffstat (limited to 'src/mongo/scripting/v8-3.25_utils.h')
| -rw-r--r-- | src/mongo/scripting/v8-3.25_utils.h | 134 |
1 files changed, 67 insertions, 67 deletions
diff --git a/src/mongo/scripting/v8-3.25_utils.h b/src/mongo/scripting/v8-3.25_utils.h index 291b82485be..3e13af74b1e 100644 --- a/src/mongo/scripting/v8-3.25_utils.h +++ b/src/mongo/scripting/v8-3.25_utils.h @@ -39,79 +39,79 @@ namespace mongo { -#define jsassert(x,msg) uassert(16664, (msg), (x)) +#define jsassert(x, msg) uassert(16664, (msg), (x)) -#define argumentCheck(mustBeTrue, errorMessage) \ - if (!(mustBeTrue)) { \ - return v8AssertionException((errorMessage)); \ +#define argumentCheck(mustBeTrue, errorMessage) \ + if (!(mustBeTrue)) { \ + return v8AssertionException((errorMessage)); \ } - std::ostream& operator<<(std::ostream& s, const v8::Local<v8::Value>& o); - std::ostream& operator<<(std::ostream& s, const v8::Local<v8::TryCatch>* try_catch); +std::ostream& operator<<(std::ostream& s, const v8::Local<v8::Value>& o); +std::ostream& operator<<(std::ostream& s, const v8::Local<v8::TryCatch>* try_catch); - /** Simple v8 object to string conversion helper */ - std::string toSTLString(const v8::Local<v8::Value>& o); +/** Simple v8 object to string conversion helper */ +std::string toSTLString(const v8::Local<v8::Value>& o); - /** Like toSTLString but doesn't allocate a new std::string - * - * This owns the string's memory so you need to be careful not to let the - * converted StringDatas outlive the V8Scope object. These rules are the - * same as converting from a std::string into a StringData. - * - * Safe: - * void someFunction(StringData argument); - * v8::Local<v8::String> aString; - * - * someFunction(V8String(aString)); // passing down stack as temporary - * - * V8String named (aString); - * someFunction(named); // passing up stack as named value - * - * StringData sd = named; // scope of sd is less than named - * - * Unsafe: - * StringData _member; - * - * StringData returningFunction() { - * StringData sd = V8String(aString); // sd outlives the temporary - * - * V8String named(aString) - * _member = named; // _member outlives named scope - * - * return V8String(aString); // passing up stack - * } - */ - class V8String { - public: - explicit V8String(const v8::Local<v8::Value>& o) :_str(o) { - massert(16686, "error converting js type to Utf8Value", *_str); - } - operator StringData () const { return StringData(*_str, _str.length()); } - private: - v8::String::Utf8Value _str; - }; +/** Like toSTLString but doesn't allocate a new std::string + * + * This owns the string's memory so you need to be careful not to let the + * converted StringDatas outlive the V8Scope object. These rules are the + * same as converting from a std::string into a StringData. + * + * Safe: + * void someFunction(StringData argument); + * v8::Local<v8::String> aString; + * + * someFunction(V8String(aString)); // passing down stack as temporary + * + * V8String named (aString); + * someFunction(named); // passing up stack as named value + * + * StringData sd = named; // scope of sd is less than named + * + * Unsafe: + * StringData _member; + * + * StringData returningFunction() { + * StringData sd = V8String(aString); // sd outlives the temporary + * + * V8String named(aString) + * _member = named; // _member outlives named scope + * + * return V8String(aString); // passing up stack + * } + */ +class V8String { +public: + explicit V8String(const v8::Local<v8::Value>& o) : _str(o) { + massert(16686, "error converting js type to Utf8Value", *_str); + } + operator StringData() const { + return StringData(*_str, _str.length()); + } - /** Get the properties of an object (and it's prototype) as a comma-delimited string */ - std::string v8ObjectToString(const v8::Local<v8::Object>& o); +private: + v8::String::Utf8Value _str; +}; - class V8Scope; - void installFork(V8Scope* scope, - v8::Local<v8::Object> global, - v8::Local<v8::Context> context); +/** Get the properties of an object (and it's prototype) as a comma-delimited string */ +std::string v8ObjectToString(const v8::Local<v8::Object>& o); - /** Throw a V8 exception from Mongo callback code; message text will be preceded by "Error: ". - * Note: this function should be used for text that did not originate from the JavaScript - * engine. Errors from the JavaScript engine will already have a prefix such as - * ReferenceError, TypeError or SyntaxError. - * Note: call only from a native function called from JavaScript (a callback). - * The V8 ThrowException routine will note a JavaScript exception that will be - * "thrown" in JavaScript when we return from the native function. - * Note: it's required to return immediately to V8's execution control without calling any - * V8 API functions. In this state, an empty handle may (will) be returned. - * @param errorMessage Error message text. - * @return Empty handle to be returned from callback function. - */ - v8::Local<v8::Value> v8AssertionException(const char* errorMessage); - v8::Local<v8::Value> v8AssertionException(const std::string& errorMessage); -} +class V8Scope; +void installFork(V8Scope* scope, v8::Local<v8::Object> global, v8::Local<v8::Context> context); +/** Throw a V8 exception from Mongo callback code; message text will be preceded by "Error: ". + * Note: this function should be used for text that did not originate from the JavaScript + * engine. Errors from the JavaScript engine will already have a prefix such as + * ReferenceError, TypeError or SyntaxError. + * Note: call only from a native function called from JavaScript (a callback). + * The V8 ThrowException routine will note a JavaScript exception that will be + * "thrown" in JavaScript when we return from the native function. + * Note: it's required to return immediately to V8's execution control without calling any + * V8 API functions. In this state, an empty handle may (will) be returned. + * @param errorMessage Error message text. + * @return Empty handle to be returned from callback function. + */ +v8::Local<v8::Value> v8AssertionException(const char* errorMessage); +v8::Local<v8::Value> v8AssertionException(const std::string& errorMessage); +} |