CN101799766A - Method and device for analyzing script file by using third engine in Widget engine - Google Patents

Method and device for analyzing script file by using third engine in Widget engine Download PDF

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Publication number
CN101799766A
CN101799766A CN 201010140481 CN201010140481A CN101799766A CN 101799766 A CN101799766 A CN 101799766A CN 201010140481 CN201010140481 CN 201010140481 CN 201010140481 A CN201010140481 A CN 201010140481A CN 101799766 A CN101799766 A CN 101799766A
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engine
script file
javascript script
widget
party
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CN 201010140481
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CN101799766B (en
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段宝山
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Qingdao Hisense Electronics Co Ltd
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Qingdao Hisense Electronics Co Ltd
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Abstract

The invention relates to a method and a device for analyzing a script file by using a third engine in a Widget engine. The method comprises the steps of: compiling a source code of the third engine into a corresponding library file; calling a relevant function of the third engine to create a compiling environment of a JavaScript file; obtaining the JavaScript file by the Widget engine; and analyzing the JavaScript file by using the relevant function of the third engine. By adding the third engine in the Widget engine, the JavaScript file according to a JavaScript grammar is analyzed, the function of analyzing the JavaScript file by the Widget file is realized, and the bottleneck of analyzing the JavaScript file by the Widget engine is broken through. The third engine adopts a SpideMonkey engine, and has strong analyticity and good portability.

Description

Use the method and apparatus of third party's engine analyzing script file in the Widget engine
Technical field
The present invention relates to field of computer technology, more specifically, relate to the method and apparatus that uses third party's engine analyzing script file in a kind of Widget engine.
Background technology
Widget is present widely used a kind of application program, and this program can be applicable in the multiple electronic products such as PC, televisor, mobile phone.By the Widget engine, can resolve various Widget programs, various data and function are showed the user by Widget, as perpetual calendar, clock, played songs or the like.
For televisor, because the development of televisor networking, the user also can pass through the Widget browsing page when watching TV programme, check stock information, inquiry weather conditions etc.Widget engine in that televisor is embedded in is also referred to as the TVWidget engine, adds to carry out some functions relevant with televisor, as switching channels, recording TV program etc.The TVWidget engine is to move on TV, not only can carry out the Widget program on the televisor, can also download various Widget programs on TV from network, resolve the Widget program then, the various functions that the Widget program realizes are presented to the user, and the function of these Widget programs has news, weather forecast, stock information, online playing or the like.These Widget programs have a common characteristic, and the behavior control and the function control that are exactly them all are to finish with the JavaScript script.Therefore, the TVWidget engine must can be resolved the JavaScript script, could present to the user to the function that each Widget program is realized.But because the JavaScript script is abundant in content, control is complicated, and the TVWidget engine wants oneself to realize that a cover JavaScript analytics engine degree of difficulty is very big at present, we can say that it is a bottleneck of TVWidget engine that JavaScript resolves.The JavaScript analytics engine of introducing third party's maturation then can reduce development difficulty, and the breakthrough bottleneck problem realizes the function of TVWidget engine fully.
Summary of the invention
The present invention aims to provide the method and apparatus that uses third party's engine analyzing script file in a kind of Widget engine, and it can solve the bottleneck problem of Widget engine to the parsing of JavaScript script.
According to an aspect of the present invention, provide a kind of method of in the Widget engine, using third party's engine analyzing script file, comprising: the compilation of source code of third party's engine is become corresponding library file; Call the translation and compiling environment of function creation JavaScript script file of the library file of third party's engine; The Widget engine obtains the JavaScript script file in the Widget program; Use the function of the library file of third party's engine to resolve the JavaScript script file.
Further, calling the process of creating the translation and compiling environment of JavaScript script file in the function of library file of third party's engine may further comprise the steps:
Create JavaScript script file runtime environment; In the runtime environment of creating, create script operation context; The script operation context that configuration has been created; In script operation context, create and the built-in class of initialization third party engine.
Further, third party's engine is an Ateles SpiderMonkey engine.
Further, create after the translation and compiling environment of JavaScript script file, method also comprises: in the SpiderMonkey engine, according to user's functional requirement definition class and/or function.
Further, resolve after the JavaScript script file, method also comprises: the JavaScript script file after operation is resolved.
Further, in the JavaScript script file process after operation is resolved, also comprise: the JavaScript script file uses according to the class and/or the function of user's functional requirement definition or is used for calling the built-in class of SpiderMonkey.
The process of the JavaScript script file after further, operation is resolved comprises:
JavaScript script file in buffer zone after the storing and resolving as the operation function parameters, is carried out the operation function with address stored and buffering section length; Or the JavaScript script file after the utilization and operation function call is resolved returns the pointer variable of calling once more after carrying out the operation function.
Further, the Widget engine is TVWidget engine, the Widget engine in the mobile phone or the Widget engine in the computing machine in the televisor.
According to another aspect of the present invention, also provide a kind of device that uses third party's engine analyzing script file in the Widget engine, comprising: compilation unit is used for the compilation of source code of third party's engine is become corresponding library file; The unit is set, is used for the translation and compiling environment of the function creation JavaScript script file of the library file by third party's engine; Acquiring unit is used for the JavaScript script file by Widget engine acquisition Widget program; Performance element is used to use the function of the library file of third party's engine to resolve the JavaScript script file.
Further, also comprise: the operation unit is used to move the JavaScript script file after performance element is resolved.
The present invention has realized the function of widget engine parsing JavaScript script by having added third party's engine in the widget engine, can resolve the JavaScript script that meets the JavaScript grammer, has promoted the exploitation of widget engine.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the inner structure synoptic diagram of using the TVWidget engine in televisor of the embodiment of the invention;
Fig. 2 shows the add-on third party engine process figure in the TVWidget engine of the embodiment of the invention;
Fig. 3 shows the process flow diagram of the establishment JavaScript script compile environment of the embodiment of the invention;
Fig. 4 shows the apparatus structure synoptic diagram of the embodiment of the invention.
Embodiment
For clearly demonstrating method and apparatus of the present invention, provide preferred embodiment below and be described with reference to the accompanying drawings.There is bottleneck problem in present Widget program aspect the parsing JavaScript script, and the company that has has developed the analytics engine that adopts the C language compilation separately for resolving the JavaScript script, develop the open source software Ateles of finishing (SpiderMonkey) as Mozilla company, can resolve all JavaScript language now fully, have extraordinary versatility.Therefore, can consider in the Widget engine, to introduce the analytics engine of third party's engine SpiderMonkey as JavaScript.The present invention can add the spidermonkey engine in the engine on the various electronic equipments such as the Widget of the Widget of TVWidget engine, PC engine or mobile phone engine, to realize the parsing to various JavaScript scripts.It is all identical to add spidermonkey engine process in the Widget of various electronic equipments engine, is example with the televisor below, describes.
Referring to the inner structure synoptic diagram of in televisor, using the TVWidget engine shown in Figure 1, decoding chip in the televisor is equipped with the TVWidget engine, this TVWidget engine has added the SpiderMonkey engine, the widget program that resolving memory or mixed-media network modules mixed-media are downloaded, and will parse function demonstration and use to the user.
The process of method of the present invention add-on third party engine in the TVWidget engine can may further comprise the steps referring to Fig. 1 and Fig. 2:
S21: using a computer is compiled into library file by compiler with third party's engine.
Third party's engine joins in the TVWidget engine, need elder generation that the source code of third party's engine is compiled, be compiled into corresponding library file so that decoding chip identification, because decoding chip difference, compiler is also inequality, need to use the compiler of using third party's engine chip to compile, and the library file after will compiling is embedded in the decoding chip.
S22: the Widget engine control third party engine in the decoding chip is set up JavaScript script compile environment.
Have only the JavaScript script compile environment of foundation, the JavaScript script file just can move, and could carry out follow-up resolving like this.In the process of setting up JavaScript script compile environment,, comprise following step referring to process flow diagram shown in Figure 3:
S31: create a script runtime environment by third party's engine.
S32: in the runtime environment of creating, create script operation context again by third party's engine.
S33: the script of having created by third party's engine configuration moves context.
S34: in the script operation context of creating, create an object by third party's engine.
S35: class built-in in third party's engine is given in the object of new establishment at last, so that the JavaScript script uses.
In the present embodiment, if third party's engine adopts the SpiderMonkey engine, the then above-mentioned JS_NewRuntime function of SpiderMonkey engine that uses in step S31 is created the script runtime environment.
In step S32, need to use the JS_NewContext function creation script operation context of SpiderMonkey engine.
Functions such as JS_SetOptions, the JS_SetVersion of use SpiderMonkey engine, JS_SetErrorReporter dispose relevant parameter options in step S33.
In step S34, to create an object with the JS_NewObject of SpiderMonkey engine earlier.
In step S35, make the object of this new establishment have the function of the built-in various standard class of SpiderMonkey engine with the JS_InitStandardClasses function.With JS_NewObject function creation object the time, the flags of this object must be made as JSCLASS_GLOBAL_FLAGS.
By these top settings, in the Widget engine, created JavaScript script environment, created the object of function with the built-in standard class of third party's engine, the JavaScript script can use the class of the built-in standard of third party's engine.
S23: the Widget engine in the decoding chip parses the JavaScript script file among the Widget
The Widget engine parses the JavaScript script file from the various files of Widget, resolve for third party's analytics engine.
S24: the Widget engine in the decoding chip is by third party's engine parsing operation JavaScript script file.
Parsing operation JavaScript script file is given the user with the function demonstration in the widget program, carries out as playing back music, checks operation such as weather.Operation JavaScript script file process mainly comprises following dual mode:
First kind of mode
Decoding chip is used as a character buffer to the JavaScript script and is moved.Promptly script file all the elements are read in the buffer zone, called the JS_EvaluateScript function then, and the address and the length of buffering are gone over as its 3rd, the 4th parameter transmission respectively, can finish the operation of JavaScript script.Also have the JS_EvaluateUCScript function in addition, this function is also finished identical functions, can be used to compile the Unicode character string.Adopt this mode only to move the JavaScript script file that one parsing goes out.
The second way
Decoding chip is earlier JavaScript script file compiling back operation.Be first call function JS_CompileFile, the filename of the JavaScript script that compile is passed to this function, as its 3rd parameter.After this function call success, can return the variable of a JSScript pointer type, and then this return results is passed to function JS_ExecuteScript, as its 3rd parameter.So also finished the operation of JavaScript script.Owing to returned the variable of JSScript pointer type, can repeatedly move the JavaScript script that parses by calling this variable.
The process of add-on third party engine parsing JavaScript script file in the TVWidget engine has been described above, if adopting the spidermonkey engine resolves, in step S34, created object, this object has the function of the built-in standard class of spidermonkey engine, as the function of classes such as Date, Math.The user also can be according to the demand of using, and after step S22, self-defining class of statement or function in the spidermonkey engine use user-defined class or function in the JavaScript script.
Mode by SpiderMonkey engine statement class in the C language is as follows:
1, attribute array of statement, each attribute of the corresponding new class that will create of each element in this array.
2, method array of statement, each method of the corresponding new class that will create of each element in this array.
3, the function of a getattr value of definition, this function is used for obtaining the value of each attribute that will create new class.
4, function that sets property of definition, this function is used for being provided with the value of each attribute that will create new class.
5, variable of definition, this types of variables is JSClass, makes the getProperty of this variable equal the function that the 3rd step defined simultaneously, the setProperty value that makes this variable is the function of definition in the 4th step.
6, use this variable of JS_InitClass function initialization of SpiderMonkey engine.When calling this function with the address of variable of definition in the 5th step as its 4th parameter, in the 1st step the attribute array of statement as its 7th parameter, in the 2nd step the method array of statement as its 8th parameter, thereby finish the establishment of a new class.
In the C language environment, just create a user-defined class by above aspect, in the JavaScript script, just can use this new class, obtained the attribute of this new class, used the method for this new class.
Sometimes some functions that need in the JavaScript script to call in the C language are finished some functions, and the mode of function of calling the C language by the SpiderMonkey engine in JavaScript is as follows:
1, function of definition in the C language environment, its prototype is: JSBool (*) (JSContext*cx, JSObject*obj, uintN argc, jsval*argv, jsval*rval);
2, call the JS_DefineFunction function, make the function name of its 3rd parameter for using in the future in the JavaScript script, making its 4th parameter is the function of definition in the 1st step.
By above two the step promptly can a function declaration in the C language in the JavaScript script, the user can be called in the JavaScript script.
If once state a plurality of functions, can be with the following methods:
1, uses array of JSFunctionSpec definition, the function name of first value of each element for will in JavaScript, calling in the future in the array, the function of second value in the C language, stating.
2, call the JS_DefineFunctions function, the array of statement is as its 3rd parameter in going on foot with the 1st.
Go on foot and in the JavaScript script, to use by the many functions of disposable statement by above two.The user can call the function of being stated in the JavaScript script.
By the class and the function of above statement, the user can use these classes and function in the JavaScript script, to resolve and to support more function.The widget engine is resolved in the widget program, can resolve by the SpiderMonkey engine that the JavaScript script uses self-defining class or function in the widget program.
Describe procedure of the present invention above in detail, the present invention can finish the parsing to the JavaScript script by added third party's engine in the widget engine, has broken through the bottleneck problem in the Widget engine, has promoted the exploitation of widget engine.Third party's engine can adopt the SpiderMonkey engine, also can adopt other similarly to resolve the engine of JavaScript script.
Describe method of the present invention above in detail, for method of the present invention, can realize with the form of multiple apparatus structure, provide a kind of embodiment explanation of preferably installing below, the apparatus structure synoptic diagram referring to shown in Fig. 4 comprises:
Compilation unit 41 is used for the compilation of source code of described third party's engine is become corresponding library file;
Unit 42 is set, is used for creating the translation and compiling environment of JavaScript script file at described third party's engine;
Acquiring unit 43 is used for the JavaScript script file by described Widget engine acquisition Widget program;
Performance element 44 is used to use the function of the library file of described third party's engine to resolve and move described JavaScript script file.
Said method flow process of the present invention all can realize in device of the present invention, not give unnecessary details one by one at this.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, carry out by calculation element thereby they can be stored in the memory storage, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. in the Widget engine, use the method for third party's engine analyzing script file, it is characterized in that, comprising:
The compilation of source code of described third party's engine is become corresponding library file;
Call the translation and compiling environment of function creation JavaScript script file of the library file of described third party's engine;
Described Widget engine obtains the JavaScript script file in the Widget program;
Use the function of the library file of described third party's engine to resolve described JavaScript script file.
2. method according to claim 1 is characterized in that, the process of translation and compiling environment of function creation JavaScript script file of calling the library file of described third party's engine may further comprise the steps:
Create JavaScript script file runtime environment;
In the described runtime environment of creating, create script operation context;
The described script operation context that configuration has been created;
In described script operation context, create and the built-in class of the described third party's engine of initialization.
3. method according to claim 1 and 2 is characterized in that, described third party's engine is an Ateles SpiderMonkey engine.
4. method according to claim 3 is characterized in that, creates after the translation and compiling environment of JavaScript script file, and described method also comprises:
In described SpiderMonkey engine, according to user's functional requirement definition class and/or function.
5. method according to claim 4 is characterized in that, resolves after the described JavaScript script file, and described method also comprises:
Described JavaScript script file after operation is resolved.
6. method according to claim 5 is characterized in that, in the JavaScript script file process after described operation is resolved, also comprises:
Described JavaScript script file uses the class and/or the function of described functional requirement definition according to the user or is used for calling the built-in class of SpiderMonkey.
7. method according to claim 5 is characterized in that, the process of the JavaScript script file after described operation is resolved comprises:
The JavaScript script file of storage after the described parsing in buffer zone as the operation function parameters, carried out described operation function with address stored and described buffer length;
Or the JavaScript script file after the described parsing of utilization and operation function call returns the pointer variable of calling once more after carrying out described operation function.
8. method according to claim 1 is characterized in that, described Widget engine is TVWidget engine, the Widget engine in the mobile phone or the Widget engine in the computing machine in the televisor.
9. in the Widget engine, use the device of third party's engine analyzing script file, it is characterized in that, comprising:
Compilation unit is used for the compilation of source code of described third party's engine is become corresponding library file;
The unit is set, is used for the translation and compiling environment of the function creation JavaScript script file of the library file by described third party's engine;
Acquiring unit is used for the JavaScript script file by described Widget engine acquisition Widget program;
Performance element is used to use the function of the library file of described third party's engine to resolve described JavaScript script file.
10. device according to claim 9 is characterized in that, also comprises:
The operation unit is used to move the described JavaScript script file after described performance element is resolved.
CN 201010140481 2010-03-26 2010-03-26 Method and device for analyzing script file by using third engine in Widget engine Expired - Fee Related CN101799766B (en)

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CN109032607B (en) * 2018-07-25 2022-03-15 广州广知建信息科技有限公司 Machine room monitoring real-time data analysis engine based on lua script and script debugging tool
CN109739488A (en) * 2018-12-29 2019-05-10 深圳点猫科技有限公司 Third party library is called to execute the method and electronic equipment of python code
CN109800057A (en) * 2019-01-18 2019-05-24 杭州复杂美科技有限公司 Object reference method, equipment and storage medium
CN109800057B (en) * 2019-01-18 2021-06-01 杭州复杂美科技有限公司 Object calling method, device and storage medium
CN114330940A (en) * 2020-09-28 2022-04-12 华中科技大学 Multi-target mixed spider monkey optimization method for PCB electroplating task sequencing problem
CN114330940B (en) * 2020-09-28 2024-05-28 华中科技大学 Multi-objective mixed spider monkey optimization method for PCB electroplating task sequencing problem

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