JP2002041287A - Reusable part extraction equipment, reusable part extraction method and storage media that store program to make execution of process in computer by the equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reusable part extraction device that extracts reusable program parts through the analysis of variables in an existing program. SOLUTION: A reusable part extraction equipment that extracts reusable program parts based on a program configuration is provided with a control block analysis means that analyzes the program configuration of plural control blocks that consists of a program and an operational data decision means that decides whether an operational data manipulated in each control block is a local variable that indicates to be manipulated only in the control block based on the program configuration analyzed by the above control block analysis means, and the reusable part extraction equipment extracts the operational data decided to be a local variable by the above operational data decision means as a reusable program parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reusable part extracting apparatus for extracting reusable program parts in an existing program, and more particularly, to a reusable part extracting apparatus for analyzing reusable parts by analyzing variables in the existing program. It is an object of the present invention to provide a reusable component extracting apparatus for extracting a program component.

[0002] The present invention also relates to a reusable component extraction method for extracting such reusable program components and a storage medium storing a program for causing a computer to execute a process in the reusable component extraction method.

[0003]

2. Description of the Related Art Conventionally, when developing a new system by improving functions according to the use status of an existing system, or by migrating to another system, etc., development has been efficiently performed by reducing development costs and shortening the development period. Attempts have been made to maximize the reuse of program resources built on existing systems.

[0004] When reusing, a new developer is realized by analyzing an existing system based on design documents at the time of development of the existing system and the knowledge of the developer and extracting reusable program parts. I was

[0005]

However, if the existing system has been used for many years, and the system has been improved or the program has been modified as needed during the long-term use, the design at the time of development has to be improved. Documents cannot fully analyze existing systems. In addition, when a developer is changed, it is troublesome to analyze a program of another person, and it is difficult to perform a detailed analysis. In addition, due to insufficient analysis, there is a problem that a design error occurs in an interface between a diverted part from an existing system and a newly developed part, resulting in an increase in development costs.

Therefore, there is a demand for a reusable component extracting apparatus that extracts a program of an existing system in control block units and clarifies an interface for each extractable control block unit.

[0007] Therefore, a first object of the present invention is to analyze the access status of data items in a control block unit of a program of an existing system to clarify an interface with the outside, and to re-use parts to extract reuse parts. An object of the present invention is to provide a used component extracting device.

A second object of the present invention is to analyze an access state of a data item in a program of an existing system in control block units to clarify an interface with the outside and extract a reused component. An object of the present invention is to provide a method for extracting a used component.

Further, a third object of the present invention is to provide a storage medium storing a program for causing a computer to perform processing in the above-described device.

[0010]

According to the present invention, there is provided a reusable part extracting apparatus for extracting reusable program parts based on a program configuration, comprising a plurality of control blocks. Based on the control block analysis means for analyzing the program configuration and the program configuration analyzed by the control block analysis means, in each control block, the operation data operated is a local variable operated only in the control block. It is configured to include operation data determination means for determining whether or not there is, and extraction means for extracting operation data determined as a local variable by the operation data determination means as a reusable program component.

In such a work result management apparatus, it is possible to determine, for each control block, whether or not the operation data to be operated is a local variable indicating that the operation data is operated only within the control block.

Accordingly, the operation data determined to be a local variable can be extracted as a reusable program component.

The above control block is, for example, a PERFO
A program unit called from a program by an RM or the like and executed, and is a COBOL SECTION.
Or a group of concurrently executed instructions.

Further, from the viewpoint of displaying local variables relating to a desired control block, the present invention displays a reusable program component extracted by the extracting means on a display unit according to the desired control block. And a display control unit.

In such a work result management device, the local variables of the desired control block can be displayed on the display unit.

Further, from the viewpoint of judging local variables based on the program configuration of the control block, the present invention provides the above-mentioned operation data judging means, wherein the operation data judging means performs the operation for each operation data for each control block based on the program configuration. First table creating means for creating a first table in which operation information relating to a command for operating data is created, based on the operation information of the first table created by the first table creating means In addition, it is determined whether or not the operation data is a local variable operated only in the control block for each control block, and a second table is created in which the operation data is associated with the determination result. And a second table creating means, wherein the extracting means is configured to extract the second table created by the second table creating means. Based on the table, configured to extract the operation data which is determined to be a local variable as reusable program parts.

In such a work result management apparatus, a first table in which each operation data is associated with operation information is generated for each control block, and the operation data is stored based on the generated first table. A second table is generated that determines if it is a local variable.

Therefore, based on the second table,
Operation data, which is a local variable, can be easily extracted.

In addition, from the viewpoint of associating operation data and operation information for each control block, the present invention provides the above-mentioned first table creation means, wherein the first table creation means converts the operation information for each operation data for each control block in accordance with the execution order. It is configured to correspond.

In such a work result management apparatus, the operation information is made to correspond to each operation data in accordance with the execution order for each control block, so that when the second table is generated, the execution order is considered. It can be determined whether the operation data is a local variable.

Further, from the viewpoint of generating the second table on the basis of the first table, the present invention provides the operation data determining means, wherein the operation data determination means executes a program based on the operation information of the first table. The operation data corresponding to the operation information that is managed in the work area and is referred to after being updated at least once in the control block is determined to be a local variable. It is configured to create a second table that associates the operation data with the determination result.

In such a work result management apparatus, the operation data corresponding to the operation information managed in the work area of the program and indicating that it is referred to after being updated at least once in the control block is a local variable. By making the determination, the second table can be easily generated from the first table.

Further, from the same viewpoint as described above, the present invention is characterized in that the operation data determining means is managed in a work area of a program based on the operation information of the first table, and is operated only once in a control block. It is determined that the operation data corresponding to the operation information indicating that the operation is performed is not a local variable, and a second table in which the operation data is associated with the determination result is created by the second table creation unit. It is configured to be.

In such a work result management apparatus, the operation data corresponding to the operation information indicating that the operation is performed only once in the control block is determined to be not a local variable. The second table can be generated.

From the same viewpoint as described above, according to the present invention, the operation data judging means is managed in a work area of a program based on the operation information of the first table and referred to in a control block. The second table creation means determines that the operation information corresponding to the operation information indicating that the operation information is to be further referred to or the operation information indicating the operation information indicating that the operation information is updated and referred to after being referred to is not a local variable. Thus, a second table in which the operation data is associated with the determination result is created.

In such a work result management apparatus, the operation information corresponding to the operation information indicating that it is referred to in the control block and further referred to, or the operation information indicating that the reference is updated and referred to thereafter. By determining that the operation data is not a local variable, the second table can be easily generated from the first table.

From the same viewpoint as above, according to the present invention, when the control block indicates the entire program range, the operation data determination means determines that the operation data managed in the work area of the program is a local variable. In this way, the second table creating means creates a second table in which the operation data is associated with the determination result.

In such a work result management device, when the control block indicates the entire program range, the operation data managed in the work area of the program is determined to be a local variable, so that the first table can be easily obtained. The second table can be generated.

Further, in order to solve the second problem,
The present invention relates to a reusable component extraction method for extracting a reusable program component based on a program configuration, wherein a control block analysis procedure for analyzing a program configuration comprising a plurality of control blocks, and a control block analysis procedure for analyzing the program configuration. In each control block, an operation data determination procedure for determining whether or not operation data to be operated is a local variable operated only in the control block, based on the program configuration, An extraction procedure for extracting operation data determined to be a local variable as a reusable program part, and a reusable program part extracted by the extraction procedure are displayed on a display unit according to a desired control block. And a display control procedure.

In such a work result management method, it is possible to determine, for each control block, whether the operation data to be operated is a local variable indicating that the operation data is operated only in the control block.

According to another aspect of the present invention, there is provided a program for causing a computer to perform a process in a reusable component extracting apparatus for extracting a reusable program component based on a program configuration. In the stored storage medium, based on the control block analysis procedure for analyzing a program configuration composed of a plurality of control blocks and the program configuration analyzed by the control block analysis procedure, operation data operated in each control block is stored. An operation data determination procedure for determining whether or not the local variable is operated only in the control block; and extracting the operation data determined to be a local variable by the operation data determination procedure as a reusable program component Extraction procedure, and the above extraction procedure according to the desired control block. Configured as a storage medium which stores a program and a display control procedure for displaying the extracted reusable program parts on the display unit.

In the storage medium storing such a program, it is possible to cause the computer to determine, for each control block, whether the operation data operated is a local variable indicating that the operation data is operated only in the control block. it can.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a hardware configuration of a computer system which constitutes a reusable part extracting apparatus according to an embodiment of the present invention.

In FIG. 1, this reusable part extracting apparatus 1
00 denotes a CPU (Central Processing Unit) 11, a memory unit 12, an output unit 13, an input unit 14,
Display unit 15, auxiliary storage device 16, and CD-ROM
It has a drive unit 17. Each of these units 11, 12, 13, 14, 15, 16 and CD-RO
The M drive unit 17 is connected to the bus B.

The CPU 11 controls the reusable component extraction device in accordance with the program stored in the memory unit 12, and performs processing in the reusable component extraction device as described later. The memory unit 12 includes a RAM and a ROM
A program executed by the CPU 11;
The data necessary for the processing in the CPU 11, the data obtained in the processing in the CPU 11, and the like are stored. Further, a part of the area of the memory unit 12 is allocated as a work area used for processing in the CPU 11.

The input unit 14 has a mouse, a keyboard, and the like, and is used by a user to input data necessary for performing a reusable resource analysis process and a reusable component extraction process, and to change input data. Used to input various information. The display unit 16 displays various information necessary for the user under the control of the CPU 11.

The auxiliary storage device 16 is composed of, for example, a hard disk unit, and stores various files, tables,
Store the program.

Programs related to the reuse resource analysis process and the reuse component extraction process are provided to the system by the CD-ROM 20, for example. That is, when the CD-ROM 20 storing the programs related to the reusable resource analysis process and the reusable component extraction process is set in the CD-ROM drive unit 17, the CD-ROM drive unit 17 reads the program from the CD-ROM 20, The read program is installed in the auxiliary storage device 16 via the bus B. When the reusable resource analysis process and the reusable component extraction process are started, the CPU 11 starts the processes according to the program installed in the auxiliary storage device 16. still,
CD-ROM 20 as a medium for storing the program
The present invention is not limited to this, and may be any computer-readable medium.

Next, the reusable resource analysis process executed by the CPU 11 will be described with reference to FIGS.

FIG. 2 is a flowchart for explaining the reuse resource analysis process.

Referring to FIG. 2, the program is analyzed based on the parameters input by the user (step S2).
1). The parameter designation by the user is, for example, "A
By inputting "LL", the analysis is performed for all the control blocks. When a section name is specified by the user, the range of the program specified by the section name is analyzed as the target control block. For example, in a subroutine, COB
In a system constructed in OL language, "PERFOR
M "indicates a control cycle range in the program executed.

In step S21, the CPU 11
Reads the program range specified by the input parameters from the existing program file. When "ALL" is designated, all the program codes are read from the existing program file. When a Section name is specified, the specified Section name is specified from the existing program file.
Read the program code corresponding to on.

Subsequently, the CPU 11 analyzes the range of the program executed by "PERFORM" from the read program code as a control block, thereby structuring the control block (step S2).
2). For example, when “ALL” is specified in step S21, the control block is structured as shown in FIG. 3 (details will be described later).

The CPU 11 controls the control block (Secti) based on the structuring of the control block in step S22.
on), the access state of the used data is analyzed based on the access instruction of the program, and a table T showing the data, the access state to the data and the correlation thereof
400 is generated (step S23). It is determined whether the analysis of the data access correlation of all control blocks has been completed (step S24).
Return to 23. If completed, the next step S25 is executed.

When the data access correlation analysis of all control blocks is completed in steps S23 and S24, for example, a data access correlation analysis table T400 as shown in FIG. 4 is generated (details will be described later).

Further, based on the data access correlation analysis table T400, the interface between the data in each integrated control block when the control blocks are integrated is analyzed (step S25). It is determined whether the interface analysis of all integrated control blocks has been completed (step S26), and if not, the process returns to step S25. If completed, the next step S
Execute 26.

When the analysis of the data access correlation of all control blocks is completed in steps S25 and S26, for example, an interface analysis table T500 as shown in FIG. 5 is generated (details will be described later).

The above interface analysis table T50
By analyzing the interfaces of the individual integrated control blocks based on 0, information on the extractable integrated control blocks can be obtained, for example, by the output unit 13 of FIG.
Or display on the display unit 15 (step S27).

FIG. 3 is a diagram showing an example of an analysis result of the program control block.

In FIG. 3, steps S21 and S2
2 in the program resource read by
The result of analyzing the calling relationship of the BOL SECTION or the group of concurrently executed instructions is shown.

As shown in FIG. 3, when the user specifies "ALL" in the parameter in step S21 and, for example, reads a program resource as shown in FIGS. 6 to 8, the "Main Section" of the program resource becomes , "I Se
ction "," L Section "and" T Section "indicate that three control blocks (Sections) are called by Perform.

Further, “I Section” is the same as “I1 Sectio”
Indicates that three control blocks, "n", "I2 Section" and "I3 Section" are called by Perform.

"L Section" is composed of "L1 Section" and "L
Indicates that the two control blocks of "2 Section" are called by Perform. Furthermore, “L1 Section” is replaced by “L11
Section ”,“ L12 Section ”and“ L13 Section ”
Indicates that one control block is called by Perform. Also, “L2 Section” includes “L21 Section” and “L22
Indicates that the three control blocks "Section" and "L23 Section" are called by Perform. In addition, "C1 Se
"ction" indicates that it is called from "L11 Section" and "L23 Section".

Further, "T Section" is described in "Main Sectio".
n ".

FIG. 4 is a diagram showing an example of the data access correlation analysis table.

In FIG. 4, for example, program resources as shown in FIGS. 6 to 8 are stored in steps S23 and S24.
Shows the case where it was analyzed by. In the program resource, the type of data is data a1 managed by File A.
And a2, data b1 and b2 managed by File B, data w1, w2, w3, w4, w5 managed by the Work area,
There are w6, w7, and w8, and in each data, an access command described later is recorded corresponding to the control block (section name) according to the processing execution order.

In the example of the program to be analyzed shown in FIGS. 6 to 8, for convenience of explanation, each control block of the data access correlation analysis table T400 shown in FIG. 4 and the interface analysis table T500 shown in FIG. The analysis result of the corresponding data variable is described.

In step S23, variable data in each control block (section) shown in FIG. 3 is analyzed. In other words, focusing on the data access instruction of the program, how the variable data is accessed in each control block is analyzed with respect to the type of the access instruction and the issuing order.

The types of access instructions are classified into reference (R), generation (C), update (U), and deletion (D).

For example, access instructions classified as reference (R) include READ, GET, MOVE (transfer source), ADD (addition source), and DIVI.
DE (division source), MULTIPLY (multiplication source), COMPUTE (right side), SEARC
H, SET (setting source), INSPECT (reference item), STRING (reference item), UNSTRING (reference item), and the like.

An access instruction classified as generation (C) is:
WRITE, STORE, etc.

An access instruction classified as update (U)
REWRITE, MODIFY, MOVE (transfer destination), ADD (addition destination), DIVIDE
(Division destination), MULTIPLY (Multiplication destination), COMPUTE (Left side), INITIAL
IZE, SET (setting destination), INSPECT (REPLACING / CNVERTING item), STRING (output destination), UNSTRING (output destination), and the like.

An access instruction classified as delete (D)
Such as DELETE.

For example, the data variables of the L Section are analyzed according to the classification of the access instruction.

The data variable w1 of L Section is
Since it is described in MOVE (transfer source) by the code C11 in FIG. 7,
“R” is recorded in the processing execution order 1 of L Section of FIG.

Also, L1 Section is LSec.
4, and the data variable w1 is described in MOVE (transfer destination) by the code C12 in FIG.
“U” is recorded in the processing execution order 2 of the section. Then, L11 Section is L1 Se
4 and the data variable w1 is described in MOVE (transfer destination) by the code C16 in FIG.
11 "U" in the processing execution order 3 of Section
Is recorded. Furthermore, L12 Section is L1
Called by Section, the data variable w1 is described in the MOVE (transfer destination) by the code C21 in FIG. 7, so that “U” is recorded in the processing execution order 4 of L12 Section in FIG. L13 Section is called by L1 Section, and data variable w1 is
Since it is described in MOVE (transfer destination) with code C27 in FIG. 7,
“U” is recorded in the processing execution order 5 of L13 Section in FIG. After that, L1 Section
Since the data variable w1 is described in the MOVE (transfer source) by the code C13 in FIG. 7, the data variable w1 is L1 Section in FIG.
"R" is recorded in the processing execution order 6.

Also, L2 Section is LSec.
4 and the data variable w1 is described in the MOVE (transfer destination) by the code C14 in FIG.
“U” is recorded in the processing execution order 2 of the section. Then, L21 Section is L2 Se
The data variable w1 is called in the MOVE (transfer destination) by the code C29 in FIG.
21 "U" in the processing execution order 3 of Section
Is recorded. Furthermore, L22 Section is L2
Called by Section, and the data variable w1 is described in MOVE (transfer destination) by the code C109 in FIG.
“U” is recorded in the processing execution order 4 of the L22 Section in FIG. In addition, L23 Section
Is called by the L2 section and the data variable w1
Is described in the MOVE (transfer destination) by the code C110 in FIG. 8, the processing execution order 5 of the L23 Section in FIG.
Is recorded as "U". After that, L2 Sect
, the data variable w1 is the value of MO in the code C15 in FIG.
Since it is described in the VE (transfer source), the L2 Secti of FIG.
“R” is recorded in the on execution processing order 6.

Since the data variable w3 of the L11 Section is described in the MOVE (transfer destination) by the code C17 in FIG. 7, "U" is recorded in the processing execution order 1 of the L11 Section in FIG. With code C18
As described in MOVE (transfer source), L11Sec in FIG.
“R” is recorded in the processing execution order 2 of the “tion”.

Further, the data variable w3 is L21 Sec.
In the Tion, MOVE (transfer destination) with code C30 in FIG.
Since “U” is recorded in the processing execution order 1 of L21 Section in FIG. 4 and described in MOVE (transfer source) by the code C31 in FIG.
“R” is recorded in the processing execution order 2 of the section.

Data variable w4 of L11 Section
Is described in the MOVE (transfer destination) by the code C19 in FIG. 7, the processing execution order 1 of the L11 Section in FIG.
Is recorded as "U", and the code C20 in FIG.
(Transfer source), the L21 Secti of FIG.
“R” is recorded in the process execution order 2 of “on”. Then, in L12 Section, the data variable w
4 is described in the MOVE (transfer destination) by the code C22 in FIG. 7, “U” is recorded in the processing execution order 3 of the L12 Section in FIG. 4, and the MO is recorded by the code C28 in FIG.
Since it is described in VE (transfer source), L13 Sect in FIG.
“R” is recorded in the processing execution order 3 of the “ion”.

The data variable w4 is L21 Sec.
4 is described in the MOVE (transfer destination) by the code C32 in FIG. 7, the L21 Section in FIG.
Since “U” is recorded in the processing execution order 1 and described in the MOVE (transfer source) by the code C33 in FIG.
13 In the processing execution order 3 of Section, "R"
Is recorded.

Data variable w5 of L12 Section
Is described in the MOVE (transfer destination) by the code C23 in FIG. 7, so that the processing execution order 1 of the L12 Section in FIG.
Is recorded as "U", and the code C24 in FIG.
(Transfer source), the L12 Secti of FIG.
“R” is recorded in the process execution order 2 of “on”.

Data variable w5 of L21 Section
Is described in the MOVE (transfer destination) by the code C34 in FIG. 7, so that the processing execution order 1 of the L21 Section in FIG.
Is recorded as "U". Then, the data variable w5
Is the code C in FIG. 7 in the L22 Section.
Since it is described in MOVE (transfer source) at 39, L22S in FIG.
“R” is recorded in the execution processing order 2 of the “action”.

Data variable w6 of L12 Section
Is described in the MOVE (transfer destination) by the code C25 in FIG. 7, the processing execution order 1 of the L12 section in FIG.
Is recorded as "U", and the code C26 in FIG.
(Transfer source), the L12 Secti of FIG.
“R” is recorded in the process execution order 2 of “on”.

The data variable w6 is set to L21 Sec.
4 is described in the MOVE (transfer destination) by the code C35 in FIG. 7, the L21 Section in FIG.
"U" is recorded in the processing execution order 1. Thereafter, since the data variable w6 is described in the M22 (transfer source) by the code C40 in FIG. 8 in the L22 Section, “R” is recorded in the processing execution order 2 of the L22 Section in FIG. 4 and the code C41 in FIG. MOVE
(Transfer destination), the L22 Secti of FIG.
“U” is recorded in the process execution order 2 of “on”. Further, the data variable w6 is set to L23 Sectio.
At n, since “MOVE” (transfer source) is described by the code C43 in FIG. 8, “R” is recorded in the processing execution order 2 of L23 Section in FIG.

The data variable w7 is defined as L21 Sec.
4 is described in the MOVE (transfer destination) by the code C36 in FIG. 7, the L21 Section in FIG.
"U" is recorded in the processing execution order 1. Thereafter, since the data variable w7 is described in the MOVE (transfer source) by the code C44 in FIG. 8 in the L23 Section, “R” is recorded in the processing execution order 2 of the L23 Section in FIG.

The data variable w8 is defined as L21 Sec.
4 is described in the MOVE (transfer destination) by the code C37 in FIG. 7, the L21 Section in FIG.
"U" is recorded in the processing execution order 1. After that, since the data variable w8 is described in the MOVE (transfer source) by the code C45 in FIG. 8 in the L23 Section, “R” is recorded in the processing execution order 2 of the L23 Section in FIG. 4, and the code C46 in FIG. MOVE
(Transfer destination), L23 Secti of FIG.
“U” is recorded in the processing execution order 2 of “on”. Further, in the C1 section, the code C in FIG.
Since it is described in MOVE (transfer source) at 49, L23 in FIG.
“R” is recorded in the processing execution order 2 of the section.

Data variables in other sections are recorded in the same manner, and a data access correlation analysis table T400 is generated.

FIG. 5 is a diagram showing an example of the interface analysis table.

FIG. 5 shows a case where the interface is analyzed in steps S25 and S26 shown in FIG. 2 based on the data access correlation analysis table T400 shown in FIG.

The analysis of the interface of each control block in step S25 determines whether the data variable indicated by the data access correlation analysis table T400 shown in FIG. 4 is a global variable or a local variable.

The definition of a global variable is a variable used inside and outside a control block (section) being processed.

The definition of a local variable is a variable used only in the control block being processed. Due to this property, global variables sequentially become local variables in the upper control block (uppermost section). In addition, when used in another control block called from the control block being processed, it is always used in the other control block after being updated in the control block being processed, and is used in the other control block. This is a data variable referenced by the control block being processed. That is, when entering each control block, it is the data variable that is always updated first.

Based on the above definition, an editing rule for analyzing a data variable (interface) of the data access correlation analysis table T400 shown in FIG. 4 for each control block will be described.

First, all File interfaces are regarded as global variables.

Next, the work interface is determined according to the following editing rules.

According to the editing rule 1, when only the update (U) is performed, the edit is performed to the global update (GU).

According to the editing rule 2, when there is only the reference (R), the editing is performed to the global reference (GR).

According to the editing rule 3, in the case of only generation (C), editing is performed to global generation (GC).

According to the editing rule 4, when only the deletion (D) is performed, the editing is performed to the global deletion (GD).

Editing rule 5 is referred to after updating (U) (R)
In the case of, edit to the local variable (L). In this case, the update (U) may be performed a plurality of times.

The editing rule 6 is that the reference (R) is followed by the reference (R).
In the case of, or in the case of update (U) and reference (R) after reference (R), edit to global reference (GR).

Editing rule 7 is based on Main Section.
Edit everything inside to local variables.

In accordance with the above editing rules, it is determined from the lower control block whether the variable is a local variable or a global variable based on the access order.

FIG. 5 shows that, for example, the L11 Section
n, the update (U) of the data variables w1 and w2 is
Edit to Global Update (GU) according to Editing Rule 1.
Also, after updating (U) of the data variables w3 and w4, the reference (R) is edited into the local variable (L) according to the editing rule 5. Similarly, from L12 to L13 Section
n, L21 to L23 Section and T S
Edit data variables of the option.

In the L1 section one level higher, the data variable W1 is L1, L11, L12 and L1.
3 After being updated (U) in Section, L1
Editing rule 5 for reference (R) in Section
To local variables (L) according to FIG. 9 shows that the data variable W1 is edited into the local variable (L) according to the editing rule 5.

FIG. 9 is a diagram showing an example of expanding the L1 section.

In FIG. 9, L1 Section is
Expanded by L11, L12, L13 and C1 Section, data variables w1 are represented by L1, L11, L12
And after being updated (U) in L13 Section, it is understood that it is referenced (R) in L1 Section. Therefore, according to the editing rule 5, the local variable (L)
Edited to.

From FIG. 5, the data variable W2 is L1
1 Edited to Global Update (GU) according to Edit Rule 1 because it is updated in Section.

The data variable W3 is set to L11 Sectio.
n after being updated (U) in
Edit to a local variable (L) according to Editing Rule 5.

The data variable W4 is L11, L12 and L
13 Since it is referred (R) after being updated (U) in Section, it is edited into a local variable (L) according to the editing rule 5.

The data variables W5 and W6 are L12 Se
Since it is referred (R) after being updated (U) in the Ction, it is edited into a local variable (L) according to the editing rule 5.

The data variable W7 is not used in the control block, and therefore is not analyzed.

The data variable W8 is the C1 Section
Is edited (R) in accordance with the editing rule 2 to be a global reference (GR).

As described above, L1 Section is L1
1, assuming the same control block as L12 and L13,
The above editing rule may be applied based on the access order.

Similarly, data variables are edited for the L2 section.

[0108] In the L Section, which is one layer higher, the data variable W1 is referred to (R) in the L Section, and then the data variable W1, L1, L11, L12, L13,
Since it is updated (U) in L21, L22 and L23 Sections and finally referenced in L1 and L2, it is edited to global reference (GR) according to the editing rule 6.

The data variable W2 is represented by L11 and L21 S
Since it is updated (U) in the section, it is edited to a global update (GU) according to the editing rule 1.

The data variable W3 is represented by L11 and L21 S
After being updated (U) in section, reference (R)
Therefore, the local variable (L) is edited according to the editing rule 5.

The data variable W4 is L11, L12, L1
3 and L21 are updated (U) in Section and then referred to (R), so that they are edited into local variables (L) according to Editing Rule 5.

The data variables w5 and w6 are L12 Se
After being updated (U) in the Ction, it is referenced (R), so that it is edited into a local variable (L) according to the editing rule 5.

The data variable w7 is defined as L21 and L23 S
After being updated (U) in section, reference (R)
Therefore, the local variable (L) is edited according to the editing rule 5.

The data variable w8 is defined as L23 Sectio.
n after being updated (U) in the C1 Section
, Is edited into a local variable (L) according to the editing rule 5.

In the I1 section, the data variables w1 to w8 are updated (U).
Edit to global update (GU) according to Similarly, I
Edit the data variable w1 of 2 and I3 Section.

In the main section, w1
To w8 are edited into local variables (L) according to the editing rule 7.

Further, the data variables in File A and File B are global variables since they are always transferred to the outside.

As described above, the interface analysis table T500 is generated by editing the data access correlation analysis table T400.

An interface analysis table T500 can be generated by determining whether or not a data variable in each control block of the data access correlation analysis table T400 shown in FIG. 4 has an external interface based on an editing rule.

Extraction of the extractable parts is performed based on the interface analysis table T500.

Next, FIG. 10 shows the reusable part extraction processing.
Will be described.

FIG. 10 is a flowchart for explaining the reuse component extraction processing.

FIG. 10 shows that the interface analysis table T5 is based on the parameters input by the user.
00 is analyzed (step S31). It is determined whether the data item of the control block (Section) according to the designated parameter is set in the local variable (L) (step S32). If the data item is a local variable (L), it is regarded as a local variable (step S33), and extraction under the control block is enabled (step S34). On the other hand, if the data item is not a local variable (L), it is regarded as a global variable (step S35), and the exchange with the outside is conscious (step S36).

The extractable parts (local variables) are extracted (step S37). The components extracted in step S37 are displayed on the display unit 15 in FIG. 1 (step S38).

For example, if the user sets “L11 Section
When "n" is input, "w3, w4" is displayed on the display unit 15 in step S38.

When the user inputs "L1 Section", "w1, w3, w4, w5, w6" is displayed on the display unit 15 in step S38.

When the user inputs “L2 Section” and “C1 Section”, “w1, w5, w” is displayed on the display unit 15 in step S38.
6, w7, w8 "are displayed.

In the above embodiment, by extracting control blocks to analyze the data access correlation of data variables and analyzing the interface with the outside based on the analysis result, it is possible to extract an extractable component.

In the above embodiment, the processing in step S22 shown in FIG. 2 corresponds to the control block analysis means, and the processing in steps S23 to S26 shown in FIG. 2 corresponds to the operation data determination means.

Steps S32 to S3 shown in FIG.
7 corresponds to the extraction means, and the processing in step S38 shown in FIG. 10 corresponds to the display control means.

The following is a supplementary note.

(Supplementary Note 1) In a reusable part extracting apparatus for extracting reusable program parts based on a program structure, a control block analyzing means for analyzing a program structure comprising a plurality of control blocks, and the control block analyzing means Operation data determining means for determining, in each control block, whether operation data to be operated is a local variable operated only in the control block, based on the program configuration analyzed by the operation data; A retrieving means for retrieving the operation data determined to be a local variable by the determining means as a reusable program component. (1) (Supplementary note 2) In the reusable part extracting apparatus according to Supplementary note 1, display control means for displaying a reusable program part extracted by the extracting means on a display unit according to a desired control block. A reusable parts extraction device to have. (2) (Supplementary Note 3) In the reusable component extraction device according to Supplementary Note 1, the operation data determination unit performs an operation on a command word for operating the operation data for each operation data for each control block based on the program configuration. First table creating means for creating a first table corresponding to information, and the operation for each control block based on the operation information of the first table created by the first table creating means A second table creation unit that determines whether the data is a local variable operated only in the control block and creates a second table that associates the operation data with the determination result; The extracting means is determined to be a local variable based on the second table created by the second table creating means. Reusable component extracting apparatus that extracts a reusable program parts the operation data.
(3) (Supplementary Note 4) In the reusable component extraction device according to Supplementary Note 3, the first table creation unit may associate the operation information with each operation data in each control block according to an execution order. Extraction device.

(Supplementary Note 5) In the reusable component extracting apparatus according to Supplementary Note 3, the operation data determination unit is managed in a work area of the program based on the operation information in the first table, and is included in a control block. The operation data corresponding to the operation information indicating that it is referred to after being updated at least once is determined to be a local variable, and the operation data is associated with the determination result by the second table creating means. A reusable part extracting device for creating a second table.

(Supplementary Note 6) In the reuse component extraction apparatus according to Supplementary Note 3, the operation data determination means is managed in a work area of the program based on the operation information in the first table, and is included in a control block. A second table in which the operation data corresponding to the operation information indicating that the operation is performed only once is determined not to be a local variable, and the operation data is associated with the determination result by the second table creating means. Reusable part extraction device that is created.

(Supplementary Note 7) In the reuse component extraction apparatus according to Supplementary Note 3, the operation data determination unit is managed in a work area of the program based on the operation information in the first table, and is included in a control block. The operation information indicating that the operation information indicates that it is further referred to after being referred to, or the operation data corresponding to the operation information indicating that the operation information is updated and referred to after being referred to is determined to be not a local variable, and the second A reusable component extracting apparatus wherein a second table in which the operation data and the determination result are made to correspond to each other is created by a table creating means.

(Supplementary Note 8) In the reusable component extraction device according to Supplementary Note 3, when the control block indicates the entire program range, the operation data managed in the work area of the program is a local variable. And a second table in which the operation data and the result of the determination are made to correspond to each other by the second table creating means.

(Supplementary Note 9) In a reusable component extraction method for extracting reusable program components based on a program configuration, a control block analysis procedure for analyzing a program configuration including a plurality of control blocks, and the control block analysis procedure described above. An operation data determination procedure for determining whether or not operation data operated in each control block is a local variable operated only in the control block based on the program configuration analyzed by the operation data; An extraction procedure for extracting the operation data determined to be a local variable by the determination procedure as a reusable program part, and the reusable program part extracted by the extraction procedure according to a desired control block are displayed. And a display control procedure for displaying on the unit. Product extraction method. (4) (Supplementary Note 10) A storage medium storing a program for causing a computer to perform a process in a reusable component extraction device for extracting a reusable program component based on a program configuration, the storage medium including a plurality of control blocks. Based on the control block analysis procedure for analyzing the program configuration and the program configuration analyzed by the control block analysis procedure, the operation data operated in each control block is a local variable operated only in the control block. An operation data determination procedure for determining whether or not the operation data exists, an extraction procedure for extracting the operation data determined to be a local variable by the operation data determination procedure as a reusable program part, and a desired control block. Reusable program parts extracted by the above extraction procedure Storage medium storing a program to have a display control procedure for displaying on the display unit.
(5)

As described above, according to the present invention, it is determined for each control block whether or not the operation data to be operated is a local variable indicating that the operation data is operated only in the control block. Thus, the operation data determined to be a local variable can be extracted as a reusable program component.

Further, according to the present invention, for each control block, it is determined whether or not the operation data to be operated is a local variable indicating that the operation data is operated only in the control block. It is possible to provide a work result management method for extracting the determined operation data as a reusable program component.

Further, according to the present invention, it is possible to provide a storage medium storing a program for causing a computer to perform the processing in the work result management apparatus as described above.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a hardware configuration;

FIG. 2 is a flowchart illustrating a reuse resource analysis process.

FIG. 3 is a diagram illustrating an example of an analysis result of a program control block;

FIG. 4 is a diagram illustrating an example of a data access correlation analysis table;

FIG. 5 is a diagram illustrating an example of an interface analysis table;

FIG. 6 is a diagram illustrating an example of a program to be analyzed;

FIG. 7 is a diagram illustrating an example of a program to be analyzed;

FIG. 8 is a diagram illustrating an example of a program to be analyzed;

FIG. 9 is a diagram illustrating an example of an L1 section to be analyzed;

FIG. 10 is a flowchart illustrating reusable part extraction processing.

[Explanation of symbols]

 Reference Signs List 11 CPU 12 memory unit 13 output unit 14 input unit 15 display unit 16 auxiliary storage device 17 CD-ROM driver 20 CD-ROM B bus T400 data access correlation analysis table T500 interface analysis table

Claims (5)

[Claims] 1. A reusable component extraction apparatus for extracting reusable program components based on a program configuration, wherein the control block analysis unit analyzes a program configuration including a plurality of control blocks, and the control block analysis unit analyzes the program configuration. Operation data determination means for determining, in each control block, whether operation data to be operated is a local variable operated only in the control block, based on the configured program configuration; and the operation data determination means Extracting means for extracting, as a reusable program component, operation data determined to be a local variable by the user. 2. A reusable part extracting apparatus according to claim 1, further comprising: display control means for displaying, on a display unit, the reusable program parts extracted by said extracting means according to a desired control block. Reused parts extraction device. 3. The reusable component extraction device according to claim 1, wherein the operation data determination unit is configured to execute, based on the program configuration, operation information relating to a command for operating the operation data for each operation data for each control block. A first table creating means for creating a first table corresponding to the first table creating means, based on the operation information of the first table created by the first table creating means, the operation data for each control block Is a local variable operated only in the control block, and has a second table creating means for creating a second table in which the operation data is associated with the determination result. The extraction means is determined to be a local variable based on the second table created by the second table creation means. Reusable component extracting apparatus that extracts a reusable program parts the operation data. 4. A reusable component extraction method for extracting reusable program components based on a program configuration, comprising: a control block analysis procedure for analyzing a program configuration including a plurality of control blocks; and a control block analysis procedure for analyzing the program configuration. An operation data determination procedure for determining whether or not operation data operated in each control block is a local variable operated only in the control block, based on the configured program configuration; An extraction procedure for extracting the operation data determined to be a local variable as a reusable program part, and a reusable program part extracted by the extraction procedure according to a desired control block to a display unit. Reusable part extraction having display control procedure for displaying Law. 5. A storage medium storing a program for causing a computer to perform a process in a reusable component extracting apparatus for extracting a reusable program component based on the program configuration, the program configuration comprising a plurality of control blocks. Based on the program configuration analyzed by the control block analysis procedure, whether the operation data operated in each control block is a local variable operated only in the control block An operation data determination procedure for determining whether or not the operation data is a local variable according to the operation data determination procedure; and an extraction procedure for extracting the operation data as a reusable program component. Displays the reusable program parts extracted by the extraction procedure Storage medium storing a program to have a display control procedure to be displayed on the unit.