CN102521008B - Program compiling device and method for compiling program - Google Patents

Program compiling device and method for compiling program Download PDF

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CN102521008B
CN102521008B CN201110448875.4A CN201110448875A CN102521008B CN 102521008 B CN102521008 B CN 102521008B CN 201110448875 A CN201110448875 A CN 201110448875A CN 102521008 B CN102521008 B CN 102521008B
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compiled
class
attribute
compiling
described method
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CN102521008A (en
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丑洪亮
邓君涛
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Yonyou Network Technology Co Ltd
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Yonyou Software Co Ltd
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Abstract

The invention provides a program compiling device and a method for compiling a program. The program compiling device comprises a syntax tree building module, an information extraction module, an analysis module, a collecting module and a compilation module, wherein the syntax tree building module generates a syntax tree according to a class file of a class corresponding to a method to be compiled, the information extraction module acquires class information of all class nodes from the syntax tree, the class information includes a class method, the analysis module selects method nodes from the syntax tree according to the method to be compiled and the class information, the collecting module acquires the method to be compiled in the method nodes and the attribute of the method to be compiled, and the compiling module compiles the method to be compiled and the attribute of the method to be compiled. In the technical scheme, the syntax tree is built, accordingly, the method to be compiled and the attribute of the method to be compiled are extracted, and compilation can be realized according to needs.

Description

Program compilation device and program compiling method
Technical field
The present invention relates to field of computer technology, in particular to a kind of program compilation device and a kind of program compiling method.
Background technology
Current in web system development, writing javascript is a dull and error-prone process, yet the dynamic function on a lot of front page layouts all needs the support of javascript, current AJAX (Asynchronous JavaScript XML particularly, asynchronous Javascript and XML technology, utilize this technology can realize the asynchronous interactive of webpage and server, making the user more smooth to the experience of system) technology is widely used, and makes the use of javascript more frequent.
At present in Web system (referring to the application system based on the exploitation of WWW/enterprise network) exploitation, because javascript is a kind of script, its source code did not need through compiling before mailing to client operation, but send to browser to be moved by browser-interpreted the character code of text formatting, and in javascript, one if operation is not, language so below also cannot move, although there are now a lot of browser plug-ins, can support javascript operation debugging, but effect is not very desirable, function is not very perfect, based on above reason, writing and debug javascript will be a very difficult task, can expend a large amount of time and efforts, cause work efficiency low.
Solve the problem running in exploitation javascript, conventional solution is to utilize programming language build client and be compiled into client script.First, by using precompile to operate, obtain all classes of whole web systems engineering, whether this operation also can have grammar mistake in the current web systems engineering of verification simultaneously, there is the class that there is no to be compiled into javascript, and then carry out compilation operations according to the grammer corresponding relation of java and javascript.For example: Google has developed web kit (Google Web Toolkit, GWT, the network program development kit of Google issue), can use Java programming language to write client script, and cross compile in the javascript after optimizing.
There are some problems in this solution: first, compile cost is very high, because all need when each compiling, whole web systems engineering done to precompile operation; Secondly, for the class of using, have certain limitation, the class that can not compile can not be used, even if quote its class, does not need compiling, and this has just hindered the flexible use of language.
In sum, in web system development, for some method in some class or certain class, compile the application of client script, there is following shortcoming in current solution: first, be to compile for whole web systems engineering, in extensive range, compile cost is high; Secondly, in some class, use the class that can not compile, although these classes do not need to compile, at this moment also can cause whole web systems engineering to compile unsuccessfully.
In order to solve above-mentioned problem, need a kind of solution of compiling as required of intelligence, can carry out according to actual needs local compiling or specify the problem of concrete object compiling, and solve some and do not support the client script transfer problem of the class of compiling.
Summary of the invention
Technical matters to be solved by this invention is, a kind of solution of compiling as required of intelligence is provided, can carry out according to actual needs local compiling or specify the problem of concrete object compiling, and solve some and do not support the client script transfer problem of the class of compiling.
In view of this, the invention provides a kind of program compilation device, comprising: syntax tree builds module, according to the class file of the corresponding class of method to be compiled, generative grammar tree; Information extraction module, from described syntax tree, obtains the category information of all category nodes, and wherein, described category information comprises class methods; Parsing module, according to described method to be compiled and described category information, system of selection node from described syntax tree; Collection module, obtains method described to be compiled in described method node and the attribute of described method to be compiled; Collector, by pre-defined rule, compiles the attribute of described method to be compiled and described method to be compiled.In this technical scheme, by building syntax tree, can by method to be compiled and attributes extraction thereof out, realize compiling as required.
In technique scheme, preferably, when described collection module also uses the additive method of other classes and/or other attributes in described method to be compiled, obtain the class file of described other classes, and using described additive method and/or method corresponding to described other attributes also as described method to be compiled, return to described syntax tree and build resume module.In this technical scheme, also obtain method and attribute that method to be compiled relates to other classes, and compile, guarantee that finally method to be compiled can normally be used after compiling.
In technique scheme, preferably, described collection module is also stored as class set by the attribute of described method to be compiled and described method to be compiled by class; Described collector will compile described class set.In this technical scheme, by class set, compile in collaboration with the mode of translating, can guarantee the efficiency of compiling.
In technique scheme, preferably, described collector is compiled as script by the attribute of described method to be compiled and described method to be compiled, and described script is saved as to file.In this technical scheme, script is saved as after file, be convenient to user and obtain at any time use.
In technique scheme, preferably, described category information also comprises the complete trails of the corresponding class of described method to be compiled, the filename of described collector using described complete trails as described file.In this technical scheme, by take upper type, be file designation automatically, the effect that can indicate this document, is user-friendly to this document.
The present invention also provides a kind of program compiling method, comprising: step 202, and according to the class file of the corresponding class of method to be compiled, generative grammar tree; Step 204, from described syntax tree, obtains the category information of all category nodes, and wherein, described category information comprises class methods; Step 206, according to described method to be compiled and described category information, system of selection node from described syntax tree; Step 208, obtains method described to be compiled in described method node and the attribute of described method to be compiled; Step 210, by pre-defined rule, compiles the attribute of described method to be compiled and described method to be compiled.In this technical scheme, by building syntax tree, can by method to be compiled and attributes extraction thereof out, realize compiling as required.
In technique scheme, preferably, described step 208 also comprises: while using the additive method of other classes and/or other attributes in described method to be compiled, obtain the class file of described other classes, and using described additive method and/or method corresponding to described other attributes also as described method to be compiled, return to described step 202.In this technical scheme, also obtain method and attribute that method to be compiled relates to other classes, and compile, guarantee that finally method to be compiled can normally be used after compiling.
In technique scheme, preferably, described step 208 also comprises: the attribute of described method to be compiled and described method to be compiled is stored as to class set by class; Described step 210 specifically comprises: described class set is compiled.In this technical scheme, by class set, compile in collaboration with the mode of translating, can guarantee the efficiency of compiling.
In technique scheme, preferably, described step concrete 210 comprises: the attribute of described method to be compiled and described method to be compiled is compiled as to script, and described script is saved as to file.In this technical scheme, script is saved as after file, be convenient to user and obtain at any time use.
In technique scheme, preferably, described step 210 also comprises: described category information also comprises the complete trails of the corresponding class of described method to be compiled, the filename using described complete trails as described file.In this technical scheme, by take upper type, be file designation automatically, the effect that can indicate this document, is user-friendly to this document.
By above technical scheme, can realize a kind of program compilation device and a kind of program compiling method, can carry out according to actual needs local compiling or specify the problem of concrete object compiling, and solve some and do not support the client script transfer problem of the class of compiling.
Accompanying drawing explanation
Fig. 1 is the block diagram of program compilation device according to an embodiment of the invention;
Fig. 2 is the process flow diagram of program compiling method according to an embodiment of the invention;
Fig. 3 to Figure 10 is the workflow diagram of program compiling method according to an embodiment of the invention.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Fig. 1 is the block diagram of program compilation device according to an embodiment of the invention.
As shown in Figure 1, the invention provides a kind of program compilation device 100, comprising: syntax tree builds module 102, according to the class file of the corresponding class of method to be compiled, generative grammar tree; Information extraction module 104, from described syntax tree, obtains the category information of all category nodes, and wherein, described category information comprises class methods; Parsing module 106, according to described method to be compiled and described category information, system of selection node from described syntax tree; Collection module 108, obtains method described to be compiled in described method node and the attribute of described method to be compiled; Collector 110, by pre-defined rule, compiles the attribute of described method to be compiled and described method to be compiled.In this technical scheme, by building syntax tree, can by method to be compiled and attributes extraction thereof out, realize compiling as required.
In technique scheme, when described collection module 108 also uses the additive method of other classes and/or other attributes in described method to be compiled, obtain the class file of described other classes, and using described additive method and/or method corresponding to described other attributes also as described method to be compiled, return to described syntax tree and build module 102 and process.In this technical scheme, also obtain method and attribute that method to be compiled relates to other classes, and compile, guarantee that finally method to be compiled can normally be used after compiling.
In technique scheme, described collection module 108 is also stored as class set by the attribute of described method to be compiled and described method to be compiled by class; Described collector 110 will compile described class set.In this technical scheme, by class set, compile in collaboration with the mode of translating, can guarantee the efficiency of compiling.
In technique scheme, described collector 110 is compiled as script by the attribute of described method to be compiled and described method to be compiled, and described script is saved as to file.In this technical scheme, script is saved as after file, be convenient to user and obtain at any time use.
In technique scheme, described category information also comprises the complete trails of the corresponding class of described method to be compiled, the filename of described collector 110 using described complete trails as described file.In this technical scheme, by take upper type, be file designation automatically, the effect that can indicate this document, is user-friendly to this document.
Fig. 2 is the process flow diagram of program compiling method according to an embodiment of the invention.
As shown in Figure 2, the present invention also provides a kind of program compiling method, comprising: step 202, and according to the class file of the corresponding class of method to be compiled, generative grammar tree; Step 204, from described syntax tree, obtains the category information of all category nodes, and wherein, described category information comprises class methods; Step 206, according to described method to be compiled and described category information, system of selection node from described syntax tree; Step 208, obtains method described to be compiled in described method node and the attribute of described method to be compiled; Step 210, by pre-defined rule, compiles the attribute of described method to be compiled and described method to be compiled.In this technical scheme, by building syntax tree, can by method to be compiled and attributes extraction thereof out, realize compiling as required.
In technique scheme, described step 208 also comprises: while using the additive method of other classes and/or other attributes in described method to be compiled, obtain the class file of described other classes, and using described additive method and/or method corresponding to described other attributes also as described method to be compiled, return to described step 202.In this technical scheme, also obtain method and attribute that method to be compiled relates to other classes, and compile, guarantee that finally method to be compiled can normally be used after compiling.
In technique scheme, described step 208 also comprises: the attribute of described method to be compiled and described method to be compiled is stored as to class set by class; Described step 210 specifically comprises: described class set is compiled.In this technical scheme, by class set, compile in collaboration with the mode of translating, can guarantee the efficiency of compiling.
In technique scheme, described step concrete 210 comprises: the attribute of described method to be compiled and described method to be compiled is compiled as to script, and described script is saved as to file.In this technical scheme, script is saved as after file, be convenient to user and obtain at any time use.
In technique scheme, described step 210 also comprises: described category information also comprises the complete trails of the corresponding class of described method to be compiled, the filename using described complete trails as described file.In this technical scheme, by take upper type, be file designation automatically, the effect that can indicate this document, is user-friendly to this document.
Below describe technical scheme of the present invention in detail.
In one embodiment of the present of invention, to utilize third party's grammer abstraction tool that class file is built into one based on DOM (DOM Document Object Model, Document Object Model, each attribute in file structure has been described) the abstract syntax tree AST (abstract syntax tree of structure, Abstract Syntax Tree is a kind of intermediate representation of program); As utilized JDT (java developing instrument, java development tools) under Java development language, be that one group of API (application programming interface, Application Programming Interface) that third party provides realizes.The corresponding ASTNode (abstract syntax tree node, Abstract Syntax Tree Node) of each part in code, many ASTNode have just formed this abstract syntax tree.The general corresponding Compilation Unit node of a common class (compilation unit node), this node is also the summit on AST.This is the solution of compiling as required based on intelligence, and necessary realization condition is provided.
As shown in Figure 3, the technical scheme proposing in the present embodiment is as follows:
The outgoing route of setting matching condition and client script, such as following condition, but is not limited to following situation:
The class inventory that needs compiling;
Method inventory in class etc.
According to matching condition, obtain the content in corresponding inventory, then, by data-switching, convert the data that AST can receive to, be then built into AST object.
By AST, resolve, obtain the relevant information of current class, comprise class title, bag title, generic attribute and class methods etc.
By mating with predefined compiling condition, obtain the AST method Node (node) that needs compiling, then record method and the attribute of other class using in current AST method.
According to the information of resolving other class obtaining, continue to build AST object, resolve, so circulation, until do not exist in the AST method of the needs that get compilings, do not call method and the attribute that the method for other class and attribute or existence are called other class, but till this type of can not carry out javascript compiling.
Introduce in detail the emphasis flow process in whole process below:
As shown in Figure 4, by class file, build AST:
(1) according to condition, read the content in class file;
(2), according to the interface requirement of third party's grammer abstraction tool, the data in class file are passed to grammer abstraction tool.For example, the JDT under JAVA can realize this function;
(3) this instrument can utilize the AST constructing function of self, constructs AST object.
This process has expanded the setting in AST source, makes the structure of AST more flexible.
AST is the form formation with syntax tree, various information in class can be generated the form with tree node, so a kind of language can be utilized to AST generative grammar tree, as intermediate conversion bridge, exist, and then according to corresponding syntax rule, convert the tree node content in AST to another language, to reach a kind of language conversion, become the effect of another language.
As shown in Figure 5, by AST, extract category information:
This process analysis abstract syntax tree AST, therefrom obtains the information of class, comprises title, referenced classes complete trails, generic attribute and class methods etc.
As shown in Figure 6, mate and parse all references class:
According to the method for specifying the class that will compile, in category information, mate, the method node matching is resolved to the method for other class of calling in acquisition methods and attribute.
(1) category information getting is mated with predefined condition;
(2) get the AST method node that needs compiling;
(3) resolve AST method node, find out method and the attribute of other class using in method;
(4) according to the information of other class being resolved to, read the content of other class file, build AST object, (1)-(3) step is carried out in circulation.
As shown in Figure 7, collect current matching to class methods and class methods in the generic attribute that uses:
In step 3, when resolving AST method node, method and the attribute of other class that record parses.
Repeat to call (1), (2), (3), (4) step, wherein step (4) and step (3) are synchronously carried out, until do not have class self-defined or that third party provides in the method for coupling, or there is the class that can not be compiled into javascript.
In actual applications, shift to an earlier date often the javascript class of a precompile part, reach the object of this matching process of reduction.
As shown in Figure 8, whole and all class methods of collecting and generic attribute, Yi Leiwei unit stores.
The category information of storage can be as the attached javascript file of quoting of the main javascript file of compiling.
As shown in Figure 9, according to programming language and the client script grammer rule of correspondence, the class set after integrating is compiled.
As shown in figure 10, with document form, preserve the client script after compiling, with the complete trails named file name of class.
Page button event take below as example, this process implementation logic is described.But program compiling method of the present invention is not limited to following process.
1, the backstage event class ButtonController of response foreground button click event, has event methods onclick (MouseEvent event) etc. in such.
2, in event methods, be included in the code of backstage realization event response, for example: getGlobalContext () .getPageMeta () .getWidget (" main ") obtains Widget object, when this is backstage response events or the method for Widget object.
3, now backstage response events is changed over to foreground response events, by using crossover tool, the code that backstage can be obtained to widget object converts javascript code to.
4, in the transformation rule using, comprise self-defining rule, for example, code above can be used self-defining rule when converting javascript to, " getGlobalContext () " converted to " pageUI ", " getPageMeta () .getWidget (" main ") " converted to " getWidget (" main ") ".
5, in the method for foreground response events, the javascript code that obtains widget object of generation is: pageUI.getWidget (" main ").
6, preserve javascript and generate .js file, having reached the function that backstage event is transformed into foreground event.
In sum, the invention provides a kind of program compilation device and a kind of program compiling method, by appointment, compile target and compile client script, be applicable to very much web systems engineering to carry out client script compiling local, as required.This scheme has well improved the efficiency of compilation facility, has reduced compile cost, and has reduced or avoided using the situation of some class, has strengthened the popularity that function is used.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (8)

1. a program compilation device, is characterized in that, comprising:
Syntax tree builds module, according to the class file of the corresponding class of method to be compiled, and generative grammar tree;
Information extraction module, from described syntax tree, obtains the category information of all category nodes, and wherein, described category information comprises class methods;
Parsing module, according to described method to be compiled and described category information, system of selection node from described syntax tree;
Collection module, obtains method described to be compiled in described method node and the attribute of described method to be compiled;
Collector, by pre-defined rule, compiles the attribute of described method to be compiled and described method to be compiled;
When described collection module also uses the additive method of other classes and/or other attributes in described method to be compiled, obtain the class file of described other classes, and using described additive method and/or method corresponding to described other attributes also as described method to be compiled, return to described syntax tree and build resume module.
2. program compilation device according to claim 1, is characterized in that, described collection module is also stored as class set by the attribute of described method to be compiled and described method to be compiled by class;
Described collector will compile described class set.
3. program compilation device according to claim 1 and 2, is characterized in that, described collector is compiled as script by the attribute of described method to be compiled and described method to be compiled, and described script is saved as to file.
4. program compilation device according to claim 3, is characterized in that, described category information also comprises the complete trails of the corresponding class of described method to be compiled, the filename of described collector using described complete trails as described file.
5. a program compiling method, is characterized in that, comprising:
Step 202, according to the class file of the corresponding class of method to be compiled, generative grammar tree;
Step 204, from described syntax tree, obtains the category information of all category nodes, and wherein, described category information comprises class methods;
Step 206, according to described method to be compiled and described category information, system of selection node from described syntax tree;
Step 208, obtains method described to be compiled in described method node and the attribute of described method to be compiled;
Step 210, by pre-defined rule, compiles the attribute of described method to be compiled and described method to be compiled;
While using the additive method of other classes and/or other attributes in described method to be compiled, obtain the class file of described other classes, and using described additive method and/or method corresponding to described other attributes also as described method to be compiled, return to described step 202.
6. program compiling method according to claim 5, is characterized in that, described step 208 also comprises: the attribute of described method to be compiled and described method to be compiled is stored as to class set by class;
Described step 210 specifically comprises: described class set is compiled.
7. according to the program compiling method described in claim 5 or 6, it is characterized in that, described step 210 specifically comprises:
The attribute of described method to be compiled and described method to be compiled is compiled as to script, and described script is saved as to file.
8. program compiling method according to claim 7, is characterized in that, described step 210 also comprises:
Described category information also comprises the complete trails of the corresponding class of described method to be compiled, the filename using described complete trails as described file.
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