JP5405684B1 - Source program programming language converter - Google Patents

Abstract

【Task】
Provided are a programming language conversion device of a source program, a conversion method, a conversion program, and a recording medium on which the conversion program is recorded, in which the entire program structure is converted into an object-oriented type.
[Solution]
The first source program described in the first programming language is separated into a program control description part and a business logic description part. The separated business logic description part is replaced with a module written in the second programming language. The business logic description part replaced with the module and the program control description part that has been separated are recombined, and the program instruction of the control description part is replaced with the program instruction described in the second programming language. Generate a second source program.
[Selection] Figure 1

Description

  The present invention relates to a programming language conversion device, a conversion method, a conversion program, and a recording recording the conversion program for converting a source program described in a procedural programming language into a source program described in an object-oriented programming language. The present invention relates to a media device.

  The performance of computer hardware is constantly improving, and the speed of progress is remarkable. With the improvement of hardware calculation and processing capabilities, software is required to use more data and perform more complex and advanced information processing in order to effectively use hardware resources.

  Responding to such demands on software will inevitably increase the scale and complexity of the source program by expanding the program, but if the program becomes large and the source program becomes complex, Indeed, the burden on the software developer becomes greater and software maintenance becomes difficult.

  In order to solve such problems, it is easier to develop a large-scale program by improving the extensibility of the program than before, or to improve the readability of the source program to facilitate software maintenance. Is needed. In order to meet these demands, software-related technologies are also making rapid progress.

  One of the technological advances related to software is the progress of programming techniques. A specific example is the introduction of object-oriented programming. Compared to using a procedural programming language, which is a programming language based on conventional programming techniques, for example, using an object-oriented programming language makes it easier to develop a large-scale program and It is known that program readability is improved and software maintainability and reusability are improved.

  As described above, in recent years, software development using an object-oriented programming language has become mainstream, while a lot of software written in a programming language that is not object-oriented remains. In order to be able to use such old software in a new hardware environment, it is desirable to convert a source program written in a non-object-oriented programming language into a source program written in an object-oriented programming language.

  As a means for supporting language conversion from a source program described in a procedural programming language to a source program described in an object-oriented programming language, for example, the contents of a source program before conversion, The conversion correspondence information with the converted program content corresponding to this, and the context pattern information of the programming language before conversion corresponding to the content of the converted program are stored in advance, and the content and context pattern of the source program before conversion are stored. Examples include a source program other language conversion support device (see Patent Document 1) that performs pattern conversion of information and performs language conversion of the source program using the converted program content having the highest degree of matching in pattern recognition. .

JP 2011-170556 A

  In converting a source program written in a programming language that is not object-oriented into a source program written in an object-oriented programming language, the entire program structure is preferably constructed in an object-oriented manner. Otherwise, the advantage of describing in an object-oriented programming language cannot be obtained, and the meaning of language conversion itself will be lost.

  The invention described in Patent Document 1 uses pattern recognition to replace program patterns and instructions in a procedural programming language with program patterns and instructions in an object-oriented programming language. In other words, it simply replaces the language, and the structure of the entire program remains the procedural type of the conversion source. Therefore, an engineer has to make further changes to convert the entire program structure of the source program to the object-oriented type. I had to. For this reason, the labor saving of language conversion is not enough, and it takes a lot of engineers' efforts to gain the benefits of using object-oriented programming such as extensibility, readability, maintainability, and reusability. There was a problem of need.

  In the invention described in Patent Document 1, when the converted program content to be replaced is not stored in advance, the converted program content to be replaced cannot be selected even using pattern recognition, etc. In addition, since the converted source program only contains the contents described as a comment line, the converted source program will cause a compile error during compilation and can be executed as software. It was impossible to do. In addition, even if an inappropriate conversion is performed due to an incorrect result obtained by pattern recognition, the converted source program cannot be executed in the same manner. Therefore, in many cases, if the source program after conversion is not corrected by referring to the comment line output by an engineer such as a programmer, the converted source program is compiled and executed as it is. There was a problem that was impossible.

  The present invention has been made in order to solve the above-described problems, and a programming language conversion device, a conversion method, a conversion program, and a conversion program for a source program in which the entire program structure is converted into an object-oriented type are recorded. It is an object to provide a recorded recording medium. In addition, the present invention provides a programming language conversion apparatus, a conversion method, a conversion program, and a recording medium on which the conversion program is recorded, in which a compile error does not occur when the source program converted from the programming language is compiled. With the goal.

  The present invention is a programming language conversion device for converting a first source program described in a first programming language into a second source program described in a second programming language, the first source program Correspondence relationship between first source program input receiving means for receiving program input, program pattern related to program constituting first source program, module constituting second source program, and correspondence relationship between program pattern and module The relationship information storage means for storing information in advance and the structure of the first source program received by the first source program input receiving means are analyzed, and the first source program is analyzed by the program control description section and the business logic description section. First intermediate data separated into First conversion means for converting, module selection means for selecting a module corresponding to the program pattern of the business logic description part of the first intermediate data based on the correspondence information stored in the correspondence information storage means, and module selection The selection module selected by the means is used to convert the program of the business logic description part of the first intermediate data into the selection module, and the objectized business logic description part and the program control description part are regenerated. A second conversion means for converting the first intermediate data into the second intermediate data by combining the program instruction described in the first programming language with a program instruction described in the second programming language. Program life related to the correspondence of program instructions The first programming based on the program instruction replacement information stored in the program instruction replacement information storage means for the program instruction replacement information storage means for storing the replacement information in advance and the second intermediate data generated by the second conversion means. And a third conversion means for converting the second intermediate data into the second source program by replacing the program instruction of the program control description part described in the language with a program instruction described in the second programming language. The present invention relates to a programming language conversion device characterized by the above.

  In the present invention, first, a first source program described in a first programming language is separated into a program control description part and a business logic description part. Then, the separated business logic description part is replaced with a module described in the second programming language. After that, the business logic description part replaced with the module and the program control description part that has been separated are recombined, and the program instruction of the control description part is replaced with the program instruction described in the second programming language. Generate a second source program. By separating the program control description part and the business logic description part and replacing the business logic description part with a module first, the entire program structure of the first source program to be converted can be changed to an object-oriented type. For this reason, a program converted into an object-oriented programming language according to the present invention obtains the benefits of making the entire program structure object-oriented, such as extensibility, readability, maintainability, and reusability, with less effort. be able to. In other words, language conversion can be saved and the burden on engineers can be reduced.

  The second source program converted by the third conversion means is checked for syntax in the second programming language, and the second source program is compiled to detect whether a compile error occurs. Compile error detecting means, and after correcting the description of the second intermediate data causing the compile error detected by the compile error detecting means, the third conversion means converts the corrected second intermediate data into the second source program. It is preferable to convert to

  After the second intermediate data is converted into the second source program, a syntax check in the second programming language is performed on the second source program, and the second source program is compiled and compiled. Check if an error occurs. When the occurrence of a compile error is detected, the description portion of the second intermediate data that causes the compile error is corrected, and the corrected second intermediate data is converted into the second source program. Therefore, it is possible to obtain a second source program that does not cause a compile error and can be compiled and executed as it is. Thereby, language conversion can be saved and the burden on the engineer can be reduced.

  The second programming language is preferably an object-oriented programming language, and the first programming language is preferably a procedural programming language.

  The present invention is preferably used when a source program described in a non-object-oriented programming language, for example, a procedural programming language, is converted into an object-oriented programming language. A source program written in a procedural programming language is changed from an overall program structure to an object-oriented type and converted into a source program written in an object-oriented programming language, so the converted source program uses object-oriented programming. As a result, it is possible to obtain the benefits of extensibility, readability, maintainability, and reusability.

  A specification data conversion information storage means that stores in advance module explanation information that is information for explaining the function of the module and program instruction explanation information that is information for explaining the program instruction of the program control description section, and second intermediate data The program instruction description information stored in the specification data conversion information storage means is replaced with the module description information stored in the specification data conversion information storage means, and the program instruction of the program control description part constituting the second intermediate data is replaced with the module instruction information stored in the specification data conversion information storage means. It is preferable to provide a fourth conversion means for converting the second intermediate data into specification data relating to the specification of the second source program by replacing the second intermediate data.

  According to the present invention, the language conversion of the source program is performed, and the converted data such as the specifications of the second source program is generated based on the second intermediate data generated along with the language conversion. You can also. Documents such as specifications related to the second source program can be easily created.

  The first intermediate data generated by the first conversion means is based on the MVC model and is separated into a Model object part consisting of a business logic description part and a Control object part consisting of a program control description part. preferable.

  When the first source program is separated into the business logic description part and the program control description part, the language converted second part is separated by separating the Model object part and the Control object part based on the MVC model. The source program can have a program structure based on the MVC model.

  When the first source program refers to the database, database file accepting means for accepting input of the physical file and the logical file that constitute the database referred to by the first source program, and the key file included in the physical file and the logical file And module creation information storage means for storing module creation information, which is information relating to the correspondence relationship for creating a module from a key file, based on the module creation information stored in the module creation information storage means For the physical file and logical file input by the database file receiving means, it is preferable to create a module for each key file included in the physical file and the logical file.

  When the first source program references a database, read the physical and logical files that make up the database and create a module that replaces the business logic description part of the converted second source program Thus, the second source program can use the existing database assets as they are.

  The present invention also relates to a method for executing a programming language conversion in a computer device by converting a first source program described in a first programming language into a second source program described in a second programming language. And receiving the input of the first source program, analyzing the structure of the received first source program, and separating the first source program into a program control description part and a business logic description part. Preliminarily storing a step of converting into one intermediate data, a program pattern relating to a program constituting the first source program, a module constituting the second source program, and correspondence information relating to the correspondence between the program pattern and the module Memorize in the means, memorized A step of selecting a module corresponding to the program pattern of the business logic description part of the first intermediate data based on the corresponding relationship information, and using the selected selection module, the module of the business logic description part of the first intermediate data Converting the first intermediate data into the second intermediate data by re-joining the objected business logic description part and the program control description part; Program instruction replacement information related to the correspondence relationship of program instructions for replacing program instructions described in a programming language with program instructions described in a second programming language is stored in a storage unit in advance, and the stored program Based on the instruction replacement information, And replacing the program instruction of the program control description part described in the programming language with a program instruction described in the second programming language to convert the second intermediate data into the second source program. It relates to a language conversion method.

  The present invention also provides a program for causing a computer device to execute programming language conversion, which converts a first source program described in a first programming language into a second source program described in a second programming language. The computer device includes a first source program input receiving means for receiving an input of the first source program, a program pattern relating to a program constituting the first source program, and a module constituting the second source program. , Analyzing the structure of the first source program received by the first source program input receiving means and the correspondence information storage means for storing the correspondence information regarding the correspondence relation between the program pattern and the module in advance, Program the source program The first conversion means for converting the first intermediate data separated into the control description section and the business logic description section, and the business logic description section for the first intermediate data based on the correspondence information stored in the correspondence information storage means Using module selection means for selecting a module corresponding to the program pattern and the selection module selected by the module selection means, the program of the business logic description part of the first intermediate data is replaced with the selected module. A second conversion means for converting the first intermediate data into the second intermediate data by recombining the objectified business logic description section and the program control description section, and a program instruction written in the first programming language Program instructions written in a second programming language Based on the program instruction replacement information stored in the program instruction replacement information storage means for the program instruction replacement information storage means that stores program instruction replacement information related to the replacement relationship in advance and the second intermediate data generated by the second conversion means. Replacing the program instruction of the program control description unit described in the first programming language with the program instruction described in the second programming language, and converting the second intermediate data into the second source program. The present invention relates to a programming language conversion program that functions as three conversion means.

  The present invention also provides a program for causing a computer device to execute programming language conversion, which converts a first source program described in a first programming language into a second source program described in a second programming language. The first source program input receiving means for receiving the input of the first source program, the program pattern relating to the program constituting the first source program, and the second source program Analysis of the structure of the first source program received by the first source program input receiving means and the correspondence information storage means for storing the correspondence information regarding the correspondence between the modules constituting the program pattern and the module in advance And the first sauce A first conversion means for converting the program into first intermediate data separated into a program control description section and a business logic description section, and a business of the first intermediate data based on the correspondence information stored in the correspondence information storage means. Module selection means for selecting a module corresponding to the program pattern of the logic description part, and an object for replacing the program of the business logic description part of the first intermediate data with the selection module using the selection module selected by the module selection means The second conversion means for converting the first intermediate data into the second intermediate data by recombining the objectized business logic description section and the program control description section, and written in the first programming language Program instructions written in a second programming language Program instruction replacement information storage means for storing program instruction replacement information related to the correspondence relationship to be replaced with the program instruction, and program instructions stored in the program instruction replacement information storage means for the second intermediate data generated by the second conversion means Based on the replacement information, the program instruction of the program control description part described in the first programming language is replaced with the program instruction described in the second programming language, and the second intermediate data is replaced with the second source program. The present invention relates to a recording medium that records a program that functions as third converting means for converting to a recording medium.

  The present invention is a programming language conversion device for converting first source code data described in a first programming language into a second source program described in a second programming language and operable. The first source code data is described in the first programming language and has a data structure in which the program control description part and the business logic description part constituting the first source program capable of operation are separated. The first source code data input receiving means for receiving the input of the first source code data, the program pattern relating to the program constituting the first source code data, the module constituting the second source program, Correspondence relationship between program pattern and module Business information description of the first source code data received by the first source code data input accepting means based on the correspondence information stored in the correspondence relation information storing means Module selecting means for selecting a module corresponding to the program pattern of the part, and the business logic of the first source code data received by the first source code data input receiving means using the selection module selected by the module selecting means The object which replaces the program of the description part with the selected module is converted into an object, the business logic description part converted into the object and the program control description part are recombined, and the first source code data is converted into the second source code data. Two conversion means and the first program Program instruction replacement information storage means for storing program instruction replacement information related to the correspondence relationship of the program instructions for replacing the program instructions described in the programming language with the program instructions described in the second programming language, and second conversion For the second source code data generated by the means, based on the program instruction replacement information stored in the program instruction replacement information storage means, the program instruction of the program control description part described in the first programming language is The present invention relates to a programming language conversion device comprising: a third conversion means for converting second source code data into a second source program in place of program instructions described in a second programming language.

  A first source program described in a first programming language is manually separated into a program control description part and a business logic description part in advance by an engineer, and the first source code which is the separated data Data can also be input to the programming language converter of the present invention and converted into a second source program written in a second programming language. As a result, even a complicated source program that is difficult to separate into a program control description part and a business logic description part can be easily converted into a second source program.

  The present invention is a programming language conversion device for converting source code data described in a first programming language into a second source program described in a second programming language and operable. The source code data is described in the first programming language and is composed of a program control description part and a business logic description part, and a part of the program in the business logic description part is replaced with a module. The source code data input receiving means for receiving the input of the source code data and the program instruction described in the first programming language into the program instruction described in the second programming language Program life to replace Program instruction replacement information storage means for storing program instruction replacement information relating to the correspondence relationship in advance, and source code data received by the source code data input receiving means for program instruction replacement information stored in the program instruction replacement information storage means Based on this, the program instruction of the program control description part described in the first programming language is replaced with the program instruction described in the second programming language, and the source code data is converted into the second source program. The present invention relates to a programming language conversion device comprising three conversion means.

  In the programming language conversion apparatus of the present invention, modules constituting the second source program may be registered in advance, and these may be combined with the program control description unit to input and create source code data. it can. In particular, if the second source program to be created is complex or long, or if there are many changes from the original source program, prepare the first source program, etc. In some cases, it is easier for an engineer familiar with the first programming language to input the source code data than to convert or modify the data based on this. Since the second source program can be easily obtained from the input source code data, even a technician who is not familiar with the second programming language can use the programming language conversion device of the present invention. The second source program can be easily created.

It is a block diagram which shows the structure of the programming language converter concerning embodiment of this invention. It is a figure which shows the data structure at the time of converting the conversion source source program concerning embodiment of this invention into 1st intermediate data. It is a figure which shows the data structure of the 2nd intermediate data concerning embodiment of this invention. It is a figure which shows the data structure at the time of converting the 2nd intermediate data concerning embodiment of this invention into a 2nd source program. It is a flowchart of the programming language conversion process concerning embodiment of this invention. It is a figure which shows the example of a conversion of the programming language conversion from RPG to Java (trademark) concerning embodiment of this invention. It is a figure which shows the example of a conversion of the programming language conversion from RPG to Java (trademark) concerning embodiment of this invention.

(First embodiment)
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a programming language conversion apparatus according to an embodiment of the present invention. As shown in the figure, the programming language conversion device 1 includes a control unit 11, a RAM (Random Access Memory) 12, a hard disk drive (HDD) 13, an interface unit 14, and a database 15, each connected by an internal bus. Yes.

  The control unit 11 includes a CPU (Central Processing Unit) and a ROM (Read Only Memory). The control unit 11 executes a program stored in the HDD 13 and controls the programming language conversion device 1. The RAM 12 is a work area for the control unit 11. The HDD 13 is a storage area for storing programs and data. Programs and data required for programming language conversion are read from the HDD 13 and the database 15 and loaded into the RAM 12.

  The control unit 11 reads a program and data necessary for the progress of programming language conversion from the RAM 12 and performs processing. The control unit 11 processes the program and data loaded in the RAM 12 to record the intermediate data as the processing result and the source program as the final output in the HDD 13.

  A display device 21 and an input unit 23 (for example, a mouse or a keyboard) are connected to the interface unit 14. The control unit 11 connects to the interface unit 14 information to be confirmed by the user of the programming language conversion device 1 of the present invention (hereinafter abbreviated as “user”) and information notifying the end of the process in the data processing process. It is displayed on the display screen 22 of the displayed display device 21. The user can input an instruction regarding the programming language conversion process from the input unit 23 with reference to the display on the display screen 22. Information input by the user from the input unit 23 is stored in the RAM 12, and the control unit 11 executes various programming language conversion processes based on the input information.

  The database 15 stores data 16 necessary for programming language conversion in advance. Data 16 stored in the database 15 includes a program pattern 16a, a module 16b, correspondence information 16c, program instruction replacement information 16d, module description information 16e, program instruction description information 16f, and module creation information 16g. . The program pattern 16a is information related to the syntax of a program described in a conversion source programming language. The module 16b is a functional unit program having a predetermined function described in a conversion destination programming language. The correspondence relationship information 16c is information regarding the correspondence relationship of which module 16b is used to replace each program pattern 16a. The program instruction replacement information 16d is correspondence information for replacing the conversion source program instruction with the conversion destination program instruction. The module description information 16e is information describing the function of the module 16b. The program instruction explanation information 16f is information for explaining the contents of the program instruction in the program control description part of the conversion source. The module creation information 16g is information on correspondence information for creating a module 16b corresponding to a key file included in a physical file or a logical file constituting the database to be referred to when the first source program references the database. is there. These pre-stored data 16 are temporarily stored in the HDD 13 or loaded into the RAM 12 as necessary, and used for programming language conversion processing by the control unit 11.

  Next, the outline of the present invention will be described. The present invention relates to a programming language conversion apparatus for converting a source program described in a non-object-oriented programming language into a source program described in an object-oriented programming language. Non-object-oriented programming languages include, for example, BASIC, C language, COBOL, FORTRAN, Mathematica (registered trademark), Pascal, PHP, RPG, Visual Basic (registered trademark), and other procedural programming languages, Haskell, LISP, and Scheme. And functional programming languages such as ML, Scala, and logical programming languages such as Prolog, Popler, PARLOG, and GHC. Further, as object-oriented programming languages, for example, Simura, Smalltalk (registered trademark), C ++ (registered trademark), Objective-C (registered trademark), Eiffel, Self, CLOS, Python, Ruby, Perl, Java (registered trademark). , JavaScript (registered trademark), and the like.

  In the present invention, it is preferable to convert a source program described in a procedural programming language such as RPG into a source program described in an object-oriented programming language. Even a source program currently written in a programming language classified as an object-oriented language, a multi-paradigm programming language, or the like, a source program written in accordance with a description method of a procedural programming language, for example, the 2002 version If it is a source program or the like described in the previous COBOL, the programming language conversion apparatus of the present invention can be suitably used because it can convert the entire structure of the source program into an object-oriented type. Further, for example, in the case of COBOL, the present invention can also be suitably used for source program conversion between the same languages, such as converting a source program between COBOLs having different program specifications and versions. Further, from the viewpoint that the structure of the source program can be organized using the concept of the object-oriented programming language, the programming language conversion of the present invention is not limited from the procedural programming language to the object-oriented programming language, For example, it is also suitable for language conversion between different languages belonging to the same procedural programming language, language conversion between different languages belonging to the same object-oriented programming language, and conversion from object-oriented programming language to procedural programming language. be able to.

  In the programming language conversion of the present invention, first, the source program of the conversion source is separated into a program control description part and a business logic description part. FIG. 2 is a diagram illustrating a method for separating a source program of a conversion source into a program description part and a business logic description part in the present invention. Here, a source program written in a procedural programming language will be described as an example of the source program of the conversion source. However, the present invention is not limited to this, and the source program of the conversion source is a source program. A source program described in a language other than the procedural programming language may be used as long as the program can be separated into a program description portion and a business logic description portion.

  In the source program of the conversion source described in the procedural programming language, as shown in FIG. 2A, processing composed of program instructions is described as a series of processes. In this series of processes, a program control description part for screen display, screen transition, input reception, input waiting, etc., and a business logic description part constituting internal arithmetic processing are alternately described. The program control description part and the business logic description part can be classified by an input event by the user of the program, for example, an event such as pressing of the Enter key or pressing of the “execute” button by the mouse.

  That is, the program part in which the internal calculation process after the user's calculation start instruction by the input event is performed corresponds to the business logic description part. On the other hand, the program part from the end of the internal arithmetic process to the input waiting state waiting for the next internal arithmetic process start instruction corresponds to the program control description part. Thus, the source program of the conversion source can be separated into the program control description part and the business logic description part using the input event as a key. Data obtained by separating the source program of the conversion source into a program control description part and a business logic description part is generated as first intermediate data and temporarily stored in the RAM 12 or the HDD 13.

  FIG. 2B is a diagram illustrating the structure of the first intermediate data generated in this way. The first intermediate data only needs to be data that separately holds the program control description portion and the business logic description portion of the source program of the conversion source. For example, the first intermediate data is used in spreadsheet software such as CSV format or TSV format. As long as the program control description part and the business logic description part are described separately in different columns, the program control description part and the business logic description part are separated as separate files. May be. Although not shown in particular, in the program control description part and the business logic description part of the separated first intermediate data, information on the description position of the conversion source program source before being separated is described. The recombination between the module and the program control description part, which will be described later, is executed based on this information.

  At the time when the first intermediate data is generated, specification data for objectification may be added to the first intermediate data before objectization described later. The designation data for objectification is, for example, that the user inputs and corrects parameter settings input / output to / from the module in advance. By adding the designation data, the objectification described later can be performed more smoothly.

  Although not shown in the figure, when the first intermediate data is generated, the new and old correspondence of the database referred to by the source program is also completed. When the source program references a database, if the database file referenced by the conversion source program differs from the database file referenced by the conversion source program, for example, the database file referenced by the conversion source program In some cases, the database file is divided into several database files, and the divided source database program refers to the divided database files. In such a case, although not particularly illustrated, the correspondence table of the old and new database files is stored in the database 15 in advance, and the description of the database is changed by referring to the correspondence table and changing the description in the source program of the corresponding part. The first intermediate data is generated in the form where the old and new correspondence is completed.

  Next, the generated first intermediate data is converted into an object in which only the separated business logic description part is replaced with a module described in a conversion-destination object-oriented programming language. The first intermediate data shown in FIG. 2 (b) is first converted into an object that replaces the separated business logic description part with a selection module selected from the module 16b described in the conversion destination programming language. . As described later, the objectification that is the replacement to the selection module is performed by converting the program pattern 16a described in the conversion source programming language using pattern recognition based on information stored in the database 15 in advance. This is performed by replacing the selected module selected from the modules 16b described in the conversion destination programming language. The replacement of a program pattern with a module using pattern recognition is performed by, for example, reading the program before conversion line by line and storing it in the RAM 12, and comparing the read one line program description with the program pattern 16a to score the degree of coincidence. A method of specifying a program pattern having the highest degree of coincidence, searching for and selecting a module 16b corresponding to the program pattern from the correspondence relationship information 16c, and using the selected selection module to replace the program pattern 16a, etc. Can do.

  Data necessary for objectification is prepared in advance and stored in a database. The data necessary for the objectization includes a program pattern 16a relating to the syntax of the program in the conversion source programming language, a module that performs the same processing in the conversion destination in accordance with the conversion source program pattern, and is described in the object-oriented programming language. Module 16b, and correspondence information 16c, which is information related to the correspondence between the stored program pattern and the module, is included.

  For the data converted by replacing the program pattern of the business logic description part by the selected module selected from the module 16b, the separated program control description part and the objectized business logic description part are recombined, Second intermediate data as shown in FIG. 3 is generated. In this second intermediate data, the program control description part has not yet undergone language conversion.

  FIG. 4 is a diagram showing a process of converting the second intermediate data into the second source program. By replacing the program control description part of this second intermediate data, which is composed of program instructions described in the conversion source programming language, with the program instructions described in the conversion destination programming language, the entire program Is converted to a second source program, which is a source program written in the conversion destination programming language. For this replacement, program instruction replacement information 16d related to the correspondence relationship for replacing the program instruction of the first programming language with the program instruction of the second programming language is stored in the database 15 in advance, and this information is referred to. It is executed by a method such as a replacement method using pattern recognition, such as replacement of the program pattern described above with a module. The second source program generated here is stored in the HDD 13. A conversion completion message is displayed on the display screen 22 of the display device 21.

  Next, the programming language conversion method of the present invention will be described with reference to the drawings. FIG. 5 is a flowchart relating to the programming language conversion method of the present invention.

  First, a first source program, which is a source program written in a first programming language, is input from the input unit 23 (step S11). The input first source program is stored in the HDD 13, and part or all of the source program is loaded into the RAM 12 as necessary, and the control unit 11 performs arithmetic processing.

  Next, the control unit 11 analyzes the program structure of the input first source program. By this analysis, the boundary between the program control description part and the business logic description part is detected using the input event, screen transition, etc. as a key, and the first source program is described in the program control description part and the business logic description by the method described above. The data is converted into first intermediate data which is data separated into parts (step S12). The first intermediate data is temporarily stored in the HDD 13.

  Next, the control unit 11 refers to the program pattern 16a, the module 16b, and the correspondence relationship information 16c stored in the database 15, and determines the module 16b corresponding to the program pattern of the business logic description unit of the first intermediate data. Select (step S13).

  Next, the control unit 11 uses the selected selection module to replace the program pattern of the business logic description unit of the first intermediate data with a corresponding selection module (objectification). By replacing with the selection module, the entire structure of the program is converted into an object. Then, the control unit 11 recombines the objectized business logic description part and the non-objectized program control description part to convert the first intermediate data into the second intermediate data (step S14). For the recombination method, refer to the information on the description location of the source program source before separation, described in each of the program control description part and business logic description part when converting to the first intermediate data. Then, the recombination is performed so as to maintain the original positional relationship. By this recombination, the first intermediate data having the structure as shown in FIG. 2B is converted into the second intermediate data having the structure as shown in FIG. The second intermediate data is stored in the HDD 13.

  Next, the control unit 11 replaces the program control description unit of the second intermediate data with a program instruction of the second programming language (step S15). At this step, the second intermediate data is entirely written in the second programming language. In this replacement, similarly to step S14 described above, program instruction replacement information 16d relating to the correspondence relationship in which the program instruction of the first programming language is replaced with the program instruction of the second programming language is stored in the database 15 in advance. Executed with reference to this information.

  Next, the second intermediate data described in the second programming language generated in step S15 is checked for syntax of the second intermediate data using a syntax check tool stored in advance in the ROM of the control unit 11. It is executed (step S16), and it is determined whether there is a compilation error (step S17). In this syntax check, when comparing and moving variables, whether the types of the variables are the same, whether the variables exist, whether the module 16b to be executed is executed when another module 16b is executed. This is done by checking items such as whether there is no difference between the received parameter and the parameter designated by the component that has been designated for execution, whether a variable referenced in the module 16b is declared, or the like. If a compile error is detected by the syntax check, a check list described in the format of the second intermediate data is output (step S18). The format of the second intermediate data is, for example, an intermediate language between the conversion source programming language and the conversion destination programming language, and the output checklist can be checked by an engineer who knows the conversion source programming language. It is preferable. With reference to this checklist, the description portion of the second intermediate data corresponding to the detected compile error is corrected using the compile error correction tool stored in advance in the ROM of the control unit 11 (step S19). As these syntax check tools and compilation error correction tools, generally well-known tools can be used. For example, when the second programming language is Java, integrated development such as Eclipse (registered trademark) is used. Environmental tools can also be used.

  For the second intermediate data, if no compile error is detected by the syntax check in step S17, the control unit 11 converts the second intermediate data into the second source program (step S20). The obtained second source program is stored in the HDD 13, and a message indicating that the programming language conversion process has been completed is displayed on the display screen 22 of the display device 21.

  Next, generation of specification data related to the specification of the second source program generated by the programming language conversion apparatus of the present invention will be described. The database 15 stores in advance module description information 16e relating to the function of the module and program instruction explanation information 16f relating to the program instruction of the program control description part described in the conversion source programming language. The second intermediate data generated in the process of conversion by the programming language converter of the present invention includes a selection module selected from the modules 16b described in the conversion destination programming language and a program described in the conversion source programming language. The control description part is included and has a structure as shown in FIG. The control unit 11 replaces the second intermediate data selection module with the module description information 16e. Further, the control unit 11 replaces the program command in the program control description unit of the second intermediate data with the program command description information 16f. With these replacements, the second intermediate data is related to the specifications of the second source program, which includes information on the functions of modules constituting the program and information on program instructions for performing program control while maintaining the structure of the entire program. Converted to specification data. From this specification data, the engineer can easily create a specification, which is a document related to the specification such as the program structure and functions of the second source program, and an object structure diagram of each business function. In addition, the format related to the specification is determined in advance, the information related to the format is stored in the database 15, and the specification data is formatted into the format, thereby automatically generating the specification and the object structure diagram of each business function. You can also

  In the present embodiment, the first source program has been described as an example of data input to the programming language conversion apparatus of the present invention, but the present invention is not limited to this, for example, First source code data (corresponding to the above "first intermediate data"), which is data obtained by an engineer manually separating the first source program into a program control description part and a business logic description part in advance. It can also be suitably used for the purpose of converting the first source code data into the second source program as input. Also, source code data (the above-mentioned “second” is data composed of a program control description part written in the first programming language and a business logic part made into an object by modules constituting the second source program. It is also possible to use this for the purpose of converting this source code data into a second source program by inputting from the beginning using the programming language converter of the present invention. By adopting such a configuration, the present invention makes it easy to create a complicated source program, a long source program, a source program with many changes from the original source program, and the like. In particular, even those who are familiar with the first programming language or who cannot handle the second programming language can use the programming language conversion device of the present invention to be described in the second programming language. The second source program can be easily created.

  Next, an example of programming language conversion in the present invention will be described with reference to the drawings. FIG. 6 is a diagram for explaining programming language conversion of a “MOVE” instruction described in RPG when the first programming language is RPG and the second programming language is Java.

  The description in the source program before conversion, that is, the description in the first intermediate data or the first source code data is “MOVE 'A99' RETURNCODE” by RPG as shown in FIG. This description is composed of a program instruction 61 (“MOVE”), a left side 62 (“A99”) as a constant, and a right side 63 (“RETURNCODE”) as a variable.

  The control unit 11 performs processing for converting the first intermediate data into the second intermediate data, or converting the first source code data into the second source code data. The first intermediate data and the first source code data are described in the first programming language. By the conversion process of the control unit 11, as shown in FIG. 6B, the intermediate language between RPG and Java. Is converted to data having a description of “FIELD SET 'A99' MOVE → this.RETURNCODE”. This data includes a processing command 64 (“FIELD SET”), a left side 62, a right side 66 (“this. RETURNCODE”), and an operator 65 (“MOVE →”). The right side 66 stores that the variable “RETURNCODE” belongs to “this part” which is a part (selected module) that has been converted into an object by this conversion process. “FIELD SET” of the processing command 64 means movement of a variable from the left side 62 to the right side 66. An operator 65 (“MOVE →”) means a simple movement from the left side 62 to the right side 66.

  Based on this description, the control unit 11 refers to the program instruction conversion information 16d stored in the database 15 in advance, and converts the program instruction based on this information. In this example, the description shown in FIG. 6B is converted into a description in Java as shown in FIG. In Java, a rule that the left side 62 and the right side 66 are reversed is stored in advance in the program instruction conversion information 16d. Next, the variable types of the left side 62 and the right side 66 are examined, and the optimum source for the type is constructed. In this example, since both the left side 62 and the right side 66 are variables that do not use an accessor, the Java source is “returncodeResultBean =“ A99 ”” as shown in FIG. 6C. Note that the variable is shaped so as to follow Java rules. That is, in this example, the rule that the underscore separator is a camel case notation and a specific character is added to the variable name by the variable information is stored in advance. Yes. By this rule, the right side 66 (“this.RETURNCODE”) of FIG. 6B is formed into the left side 67 (“returncodeResultBean”) of FIG. 6C, and the left side 62 (′ A99 ′) of FIG. 6B is formed. ) Is formed on the right side 68 (“A99”) of FIG.

  Next, another example of programming language conversion in the present invention will be described with reference to the drawings. FIG. 7 is a diagram illustrating programming language conversion of an “ADD” instruction written in RPG when the first programming language is RPG and the second programming language is Java.

  The description in the source program before the conversion, that is, the description in the first intermediate data or the first source code data is “ADD 1 FLD01” by RPG as shown in FIG. This description is composed of a program instruction 71 (“ADD”), a left side 72 (“1”), and a right side 73 (“FLD01”).

  The control unit 11 performs processing for converting the first intermediate data into the second intermediate data, or converting the first source code data into the second source code data. By the conversion process of the control unit 11, as shown in FIG. 7B, the data including the description “FIELD SET this. FILE01. FLD01 ADD (addition) 1” is expressed by an intermediate language between RPG and Java. Converted. This data includes a processing command 74 ("FIELD SET"), a left side 76 ("this.FILE01.FLD01"), a right side 77, and an operator 75 ("ADD (addition)"). The left side 76 stores that the variable “FLD01” belongs to the entity “FILE01” that belongs to “this part” which is a part (selected module) that has been converted into an object by this conversion process. . “FIELD SET” of the processing command 74 means movement of a variable from the left side 76 to the right side 77. An operator 75 (“ADD (addition)”) means a movement method. Here, the movement destination is changed, and a value obtained by adding the value of the right side 77 to the value of the left side 76 is moved to the left side 76. It means that.

  Based on this description, the control unit 11 refers to the program instruction conversion information 16d stored in the database 15 in advance, and converts the program instruction based on this information. In this example, the description shown in FIG. 7B is converted into a description in Java as shown in FIG. In this example, since the variable for extracting the value and the variable for moving the value are the same and are Entity variables, an accessor is set. Therefore, an accessor is set in the variable, and the arithmetic operation specified by the operator 75 is performed in the movement method, thereby converting into a Java description as shown in FIG. In this conversion, the variable types of the left side 76 and the right side 77 are examined, and variable type conversion is performed in accordance with the constant type of the right side 77. In this example, since the type matched to the constant “1” on the right side 77 is the BigDecimal type, type conversion 78 using “BigDecimal.valueOf” is performed, and the Java source is shown in FIG. Thus, “file01.setFld01 (file01.getFld01 (). Add (BigDecimal.valueOf (1)))” is obtained.

(Second Embodiment)
As a second embodiment of the present invention, an example of converting a database management system described in RPG, which is executed on System i, to an object-oriented system described in Java will be described.

  The database management system executed on System i is composed of a program source described in RPG, a file such as a display file (DSPF) or a printer file (PRTF), a CL program, a database, and the like. The programming language conversion apparatus of the present invention analyzes the elements constituting these systems, and includes four MVC models (Model object part, View object part, Control object part) and Data Access Object (hereinafter referred to as DAO). Divide into object parts.

  The division into each object part based on the MVC model will be described. The internal processing of the program source described in RPG, that is, the business logic description part is divided as a Model object part of the MVC model. Files related to display and output, such as DSPF and PRTF, are divided as the View object part of the MVC model. The program control description part related to the screen control of the program source and the screen control logic such as the CL program are divided as a Control object part of the MVC model. Further, the file related to the database referred to by the program source is redefined as DAO (base part).

  First, generation of DAO will be described. The programming language conversion apparatus of the present invention receives a physical file or a logical file, which is a file constituting a database, created by System i. A physical file is a database file that actually stores data records. On the other hand, a logical file is a file that describes a method of passing data records stored in one or more physical files to a program described in RPG, and corresponds to, for example, an index in VSAM or an alternative index. Is. The input file related to the database is analyzed by the control unit 11 and redefined as DAO (base part).

  This redefinition is as follows. In the database 15, a module 16 b corresponding to a key file included in a physical file or a logical file, and module creation information 16 g which is information relating to a correspondence relationship for creating a module from the key file are stored in advance. The control unit 11 identifies the key file included in the input physical file or logical file, refers to this stored module creation information 16g, and uses the module 16b corresponding to each key file to use DAO ( A module that is a base component is created for each key file. The module created here is composed of a Data Access Object class including S2JDBC entities and service classes. The redefined base component can be used from a system converted into Java according to the present invention, and can be used as a module that constitutes a Model object section described later.

  Next, generation of the View object part will be described. The programming language conversion apparatus of the present invention receives DSPF and PRTF, which are files related to the display layout on the display device. The control unit 11 analyzes these input files and constructs layout data. This layout data is, for example, data such as HTML, and is created in units of record formats. Therefore, by combining the record formats, a web page display layout can be created and a screen file can be created.

  Next, generation of the Control object part will be described. In the programming language conversion apparatus of the present invention, a program source, a CL program, and the like are input, the control unit 11 analyzes them, and a Control object including a program control description unit related to screen control of the program source and a screen control logic. Parts are generated. In the Control object part, an event is registered for the screen file created by the View object part, and a control logic for the event is registered. The programming language conversion apparatus of the present invention converts this control logic into a Java source by replacing the program instructions as described above. By the conversion to Java, the Control object part is composed of a JSP (Java Server Pages) file, an ActionForm, an ActionClass, and a DTO (Data Transfer Object).

  Next, generation of the Model object portion will be described. A program source written in RPG is input to the programming language conversion apparatus of the present invention. The control unit 11 analyzes this by the method as described above, separates the business logic description unit, replaces it with a module described in Java prepared in advance, and generates a Model object unit. From the Model object part, a module created by the above redefinition can also be used.

  The programming language conversion apparatus of the present invention can convert the entire structure of a source program described in a non-object-oriented programming language into an object-oriented type and convert it into a source program described in an object-oriented programming language. . Therefore, unlike programming language conversion in which program instructions are simply converted verbatim, you can fully enjoy the benefits of using object-oriented programming, such as improved extensibility, readability, maintainability, and reusability. .

  In addition, according to the programming language conversion apparatus of the present invention, assets such as existing systems and databases described in a non-object-oriented programming language can be rewritten into an object-oriented programming language and utilized even in a new hardware environment. be able to. In addition, language conversion to an object-oriented programming language can be greatly saved, so even an engineer who specializes in procedural programming languages can easily construct an object-oriented system. be able to.

  Further, according to the programming language conversion apparatus of the present invention, since the entire system is converted into an object-oriented type, data relating to program specifications such as specifications and object structure diagrams of business functions can be easily generated.

DESCRIPTION OF SYMBOLS 1 Programming language converter 11 Control part 12 RAM
13 HDD
14 Interface unit 15 Database 21 Display device 22 Display screen 23 Input unit

Claims (12)

A programming language conversion device for converting a first source program described in a first programming language into a second source program described in a second programming language,
First source program input receiving means for receiving input of the first source program;
A correspondence information storage means for storing in advance a program pattern relating to a program constituting the first source program, a module constituting the second source program, and correspondence information relating to the correspondence between the program pattern and the module;
Analyzing the structure of the first source program received by the first source program input receiving means, and converting the first source program into first intermediate data separated into a program control description part and a business logic description part Conversion means;
Module selection means for selecting a module corresponding to the program pattern of the business logic description part of the first intermediate data based on the correspondence information stored in the correspondence information storage means;
Using the selection module selected by the module selection means, the program of the business logic description part of the first intermediate data is converted into the object to be replaced with the selected module, and the objectified business logic description part, the program control description part, And a second conversion means for converting the first intermediate data into the second intermediate data,
Program instruction replacement information storage means for storing in advance program instruction replacement information related to the correspondence of program instructions for replacing a program instruction described in the first programming language with a program instruction described in the second programming language;
For the second intermediate data generated by the second conversion means, based on the program instruction replacement information stored in the program instruction replacement information storage means, the program instruction of the program control description part described in the first programming language A programming language conversion device comprising: third conversion means for converting the second intermediate data into a second source program in place of a program instruction described in the second programming language. The second source program converted by the third conversion means is checked for syntax in the second programming language, and the second source program is compiled to detect whether a compile error occurs. Compile error detection means,
After the description of the second intermediate data that causes the compilation error detected by the compile error detection means is corrected, the third conversion means converts the corrected second intermediate data into the second source program. The programming language conversion apparatus according to claim 1. The programming language conversion apparatus according to claim 1 or 2, wherein the second programming language is an object-oriented programming language. The programming language conversion apparatus according to claim 1, wherein the first programming language is a procedural programming language. Specification data conversion information storage means for storing in advance module description information that is information for describing the function of the module and program instruction description information that is information for describing a program instruction of the program control description unit;
The module constituting the second intermediate data is replaced with the module description information stored in the specification data conversion information storage means, and the program instruction of the program control description part constituting the second intermediate data is stored in the specification data conversion information storage means 5. A fourth conversion means for converting the second intermediate data into the specification data related to the specification of the second source program by replacing with the program instruction explanation information. 5. The programming language converter described. The first intermediate data generated by the first conversion means is based on the MVC model,
A Model object part consisting of a business logic description part;
6. The programming language conversion apparatus according to claim 1, wherein the programming language conversion apparatus is separated into a Control object part comprising a program control description part. A database file receiving means for receiving an input of a physical file and a logical file constituting the database referred to by the first source program when the first source program refers to the database;
A module creation information storage means for storing in advance a module corresponding to a key file included in a physical file and a logical file, and module creation information which is information on a correspondence relationship for creating a module from the key file;
Based on the module creation information stored in the module creation information storage means, a module is created for each key file included in the physical file and logical file for the physical file and logical file input by the database file receiving means. A programming language conversion apparatus according to claim 1. A method of executing a programming language conversion in a computer device, converting a first source program described in a first programming language into a second source program described in a second programming language,
Receiving the input of the first source program;
Analyzing the structure of the accepted first source program and converting the first source program into first intermediate data separated into a program control description part and a business logic description part;
The program pattern relating to the program constituting the first source program, the module constituting the second source program, and the correspondence information relating to the correspondence between the program pattern and the module are previously stored in the storage means and stored. Selecting a module corresponding to the program pattern of the business logic description part of the first intermediate data based on the corresponding relationship information,
The selected selection module is used to convert the program of the business logic description part of the first intermediate data into the selection module, and the objectized business logic description part and the program control description part are recombined. Converting the first intermediate data into second intermediate data;
Program instruction replacement information related to the correspondence relationship of program instructions for replacing program instructions described in the first programming language with program instructions described in the second programming language is stored in advance in the storage means. Based on the program instruction replacement information, the program instruction of the program control description unit described in the first programming language is replaced with the program instruction described in the second programming language, and the second intermediate data is replaced with the second intermediate data. A method for converting a programming language, comprising the step of converting into a second source program. A program for causing a computer device to execute a programming language conversion for converting a first source program described in a first programming language into a second source program described in a second programming language,
Computer equipment,
First source program input receiving means for receiving input of the first source program;
A correspondence information storage means for storing in advance a program pattern relating to a program constituting the first source program, a module constituting the second source program, and correspondence information relating to the correspondence between the program pattern and the module;
Analyzing the structure of the first source program received by the first source program input receiving means, and converting the first source program into first intermediate data separated into a program control description part and a business logic description part Conversion means;
Module selection means for selecting a module corresponding to the program pattern of the business logic description part of the first intermediate data based on the correspondence information stored in the correspondence information storage means;
Using the selection module selected by the module selection means, the program of the business logic description part of the first intermediate data is converted into the object to be replaced with the selected module, and the objectified business logic description part, the program control description part, And a second conversion means for converting the first intermediate data into the second intermediate data,
Program instruction replacement information storage means for preliminarily storing program instruction replacement information related to a correspondence relationship for replacing a program instruction described in the first programming language with a program instruction described in the second programming language;
For the second intermediate data generated by the second conversion means, based on the program instruction replacement information stored in the program instruction replacement information storage means, the program instruction of the program control description part described in the first programming language A programming language conversion program that functions as third conversion means for converting the second intermediate data into the second source program by replacing with program instructions written in the second programming language. A recording medium recording a program for causing a computer device to execute a programming language conversion for converting a first source program written in a first programming language into a second source program written in a second programming language There,
Computer equipment,
First source program input receiving means for receiving input of the first source program;
A correspondence information storage means for storing in advance a program pattern relating to a program constituting the first source program, a module constituting the second source program, and correspondence information relating to the correspondence between the program pattern and the module;
Analyzing the structure of the first source program received by the first source program input receiving means, and converting the first source program into first intermediate data separated into a program control description part and a business logic description part Conversion means;
Module selection means for selecting a module corresponding to the program pattern of the business logic description part of the first intermediate data based on the correspondence information stored in the correspondence information storage means;
Using the selection module selected by the module selection means, the program of the business logic description part of the first intermediate data is converted into the object to be replaced with the selected module, and the objectified business logic description part, the program control description part, And a second conversion means for converting the first intermediate data into the second intermediate data,
Program instruction replacement information storage means for preliminarily storing program instruction replacement information related to a correspondence relationship for replacing a program instruction described in the first programming language with a program instruction described in the second programming language;
For the second intermediate data generated by the second conversion means, based on the program instruction replacement information stored in the program instruction replacement information storage means, the program instruction of the program control description part described in the first programming language A recording medium on which is recorded a program that functions as third conversion means for converting the second intermediate data into the second source program in place of program instructions written in the second programming language. A programming language conversion device for converting first source code data described in a first programming language into a second source program described in a second programming language and operable.
The first source code data is described in the first programming language and has a data structure in which the program control description part and the business logic description part constituting the first source program capable of operation are separated. ,
First source code data input receiving means for receiving input of first source code data;
Correspondence relationship information storage means for storing in advance a program pattern relating to a program constituting the first source code data, a module constituting the second source program, and correspondence information relating to the correspondence between the program pattern and the module,
Module selection for selecting a module corresponding to the program pattern of the business logic description part of the first source code data received by the first source code data input receiving means based on the correspondence information stored in the correspondence information storing means Means,
Using the selection module selected by the module selection unit, the object of replacing the program of the business logic description part of the first source code data received by the first source code data input receiving unit with the selected module is converted into an object. A second conversion means for recombining the business logic description section and the program control description section, and converting the first source code data into the second source code data;
Program instruction replacement information storage means for storing in advance program instruction replacement information related to the correspondence of program instructions for replacing a program instruction described in the first programming language with a program instruction described in the second programming language;
The program instruction of the program control description part described in the first programming language based on the program instruction replacement information stored in the program instruction replacement information storage means for the second source code data generated by the second conversion means And a third conversion means for converting the second source code data into the second source program by replacing the above with a program instruction described in the second programming language. A programming language conversion device for converting source code data described in a first programming language into a second source program described in a second programming language and operable.
Source code data is described in a first programming language, and is composed of a program control description part and a business logic description part, and
Part of the program in the business logic description part is converted into an object by replacing it with a module.
Source code data input receiving means for receiving input of source code data;
Program instruction replacement information storage means for storing in advance program instruction replacement information related to the correspondence of program instructions for replacing a program instruction described in the first programming language with a program instruction described in the second programming language;
Program instruction of the program control description part described in the first programming language based on the program instruction replacement information stored in the program instruction replacement information storage means for the source code data received by the source code data input receiving means And a third conversion means for converting the source code data into the second source program by replacing with a program instruction described in the second programming language.

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