JPH07109586B2 - Program structure material creation processor - Google Patents

Description

DETAILED DESCRIPTION [Overview] A program structure material creation method for obtaining a printed output of a program structure of a computer system. By designating the main program, the main program and the programs that are sequentially called are determined by analyzing each program, a control table is created in the process of the analysis, and with reference to this control table, Print out the material that displays the program structure. Therefore, the control information item of the program is added to the control table for each determination of the program, and each address of the head and end items of the control information of the called program group of the program and the call of the program are added. The address of the control information item of the program and the predetermined output information are arranged and stored in the order of addition. With this function, program structure data can be automatically created and output.

[Industrial application field]

The present invention relates to a program structure material creation processing device for obtaining a printout displaying a program structure in a computer system.

The so-called program structure, which shows the calling relationships among programs, is required as a basic material in the maintenance of programs.

[Problems to be solved by conventional technology and invention]

When developing a program that is larger than a certain level, it is usually necessary to develop it by dividing it into a number of appropriately small programs, complete each of these programs, and call other programs that require those programs. By configuring the above, one larger program is configured.

The function for a program to call another program is
For example, it is prepared as a "CALL" statement of a programming language, and as is well known, the CALL statement is specified by specifying a program name of a callee and, if necessary, an argument name to be passed to the program as its operand. When the CALL statement is executed, the specified argument is passed to the specified program and that program is executed.

In this way, it is well known that, in the case of a program composed of a plurality of programs, it is important for the maintenance efficiency of the program to clearly recognize the program structure showing the calling relationship between them.

To this end, when developing a program and whenever maintenance such as improvement / modification / addition of the program is performed, data indicating the program structure should be created so that the current program structure can be accurately recognized. Is done.

However, since this program structure material is conventionally created manually by a person reading and analyzing the program list of each constituent program, there is a problem that it takes time to create and many errors are made.

[Means for solving problems]

 FIG. 1 is a block diagram showing the configuration of the present invention.

In the figure, 1 is a program storage device that stores a program, 2 is a processing device that is composed of a program analysis section 3 and an output processing section 4, and that executes creation and output processing of program structure material, and 5 is an output of the program analysis section 3. A work storage device for storing the control table 6 and an output device 7 are provided.

[Work]

By specifying the main program name from the input device 8,
The program analysis unit 3 provides a control information item for the main program at the head of the control table 6, and stores a program name as output information, a call level value (for example, the main program is "1"), and the like.

Next, assuming that the processing is sequentially carried out from the first item of the control table 6, the program (main program in this case) is read from the program storage device 1 by the program name of the first item, and the program statement is sequentially inspected.

Statements that call other programs, such as CA
Each time the LL statement is detected, one item is added to the end of the control table 6 for the called program specified by the CALL statement, and the program name, argument name, call level, etc. The address of the control information item of the calling program of the program (the program currently being inspected) is stored.

In this way, all the program statements of one program are inspected, the analysis of that program is terminated, and the processing of the next item on the control table 6 is started in the same manner as above.

In the control information item of the program which has been analyzed, the addresses of the first item and the last item of the control information item added during the inspection of the program are stored.

In this way, the items on the control table 6 are processed in order, and when there are no more items to be processed, the processing of the program analysis unit 3 ends and control is passed to the output processing unit 4.

The output processing unit 4 reads the created control table 6 from the top item and prints out the program name, call level, argument name, etc. stored as output information in the control information item.

Next, by referring to the address of the first item of the control information item of the called program group stored in that item, the control information item of one program of the called program of that program is read and printed in the same manner. Output.

In this way, in the increasing direction of the calling level, the items of the programs that are called one after another are read and the print output is continued, and when the output regarding the program that does not have the called program ends, the item of the calling program of the program is returned to, The output of the next called program from that program and the program connected to it is executed in the same manner as described above.

In this way, when it is detected that all called programs from a certain program have been processed by referring to the last item address of the control information item of the called program group, the process returns to the item of the program that called the program. .

When such an output process is continued and the process returns to the item of the main program, if there is no unprocessed program called from the main program, the output process ends.

By the above control, the automatic creation and output of the program structure material can be executed easily and efficiently.

〔Example〕

In FIG. 1, an input device 8 including, for example, a keyboard
By specifying the main program name from
Then, the program analysis unit 3 starts executing the program structure material creation processing.

Description will be made below with reference to the flow of processing of the program analysis unit shown in FIG. 2 and the control table explanatory diagram of FIG.

First, in step 10 of the process, the program analysis unit 3 starts the control information item area of the control table 6 (item 30 in FIG. 3).
A control information item for the main program is provided for storing a program name (column 31 in FIG. 3) to be output information, a call level value (column 32), and the like. Here, for the call level value, for example, the main program is set to "1" and the level value is increased according to the number of elapsed programs until the sequential call.

Next, the process proceeds to processing step 11 to start the process of adding the control information items of the control table 6 in order from the first item of the control table 6 in accordance with the designation of each item.

In step 11, first, the program is processed from the program storage device 1 to the processing device 2 by the program name (name of the main program in this case) which is the content of the column 31 in the item 30.
Read in, and the count value of the number of program steps is set to 0.
Reset to.

In step 12, the program statement is checked from the beginning of the read program, and a statement that calls another program, for example,
If it is a CALL statement, go to step 13.

In step 13, one control information item is added to the end of control table 6 (in this case, item 33 following item 30) for the called program specified by the CALL statement, and the address of the added item is added. , Is stored in the last item address column 35 of the item of the program under inspection (in this case, item 30), and if the content of the first item address column 36 is 0, it is also stored in this column.

In the added control information item, the program name, argument name, etc. specified in the CALL statement and the call level (in this case, the level value is "2" because it is called from the main program,
If there is a called program from this program, the level value becomes "3").

Further, for control at the time of output, the address of the control information item of the calling program of the program (the program currently being inspected, in this case, the main program) is stored in the column 34, and then the process proceeds to step 14. If the program statement checked in step 12 is not the CALL statement, the process immediately proceeds to step 14.

In step 14, the count value of the number of steps in the output information column is incremented by 1, and in step 15, it is determined whether or not there is a program statement to be inspected. If there is, the process returns to step 12, and the same processing as described above is performed. Execute for the program statement of.

When the processing of all program statements is completed, the process proceeds to step 16 to determine whether the next item in the control table 6 is a valid control information item,
If the control information item remains, the process returns to step 11, and the program is read by the program name described in the control information item as described above. If there is no valid control information term, the processing of the program analysis section 3 is terminated, and control is passed to the output processing section 4.

By the above processing of the program analysis unit 3, for example, a control table (only a part of the information is shown in the drawing) shown in FIG. 4B is created from the program having the program structure shown in FIG. .

In FIG. 4, A, B, C, ... Show program names, and the program A is the main program. Further, FIG. 4 (a) shows that the programs connected by the line of the arrow have a relation of calling and called as indicated by the direction of the arrow.

FIG. 5 is a diagram showing a processing flow of the output processing unit 4. In step 40 of the process, the output processing unit 4 sets the address of the head item of the created control table 6 as a process item address in an appropriate work storage area.

At step 41, one control information item is read out by the processing item address, and the program name, call level, argument name, number of steps, etc. stored as output information in that item are printed out, for example, in one line. To do. In this case, it is preferable that the program structure is displayed in an easy-to-understand manner by referring to the calling level and setting the print start column position of the line to be indented by the number of characters according to the level value.

In the next step 42, the heading item address column of the called program group in the column 36 is checked, and whether the content is equal to the content of the ending item address column of the called program group in the column 35,
Or smaller, and if it is not 0 (indicate that there is no called program), step 43
Proceed to.

In step 43, the value of the column 36 is stored as the address of the processing item, the column 36 is updated to the value of the address of the next item, and then the process returns to step 41 to start the process in the same manner as described above.

In step 42, when it is determined that the value in the column 36 does not satisfy the above condition, the output processing for all called programs of the program corresponding to the processed item is completed, or the called program has a called program. This is the case (the case of programs C, D, etc. in the example of FIG. 4) when there is not.

In that case, first, at step 44, it is judged whether or not the item currently being processed is the item of the main program.
In step 45, the term address of the calling program in the column 34 is set as the processing term address, and the process returns to step 42.

Therefore, it is determined in the same manner as described above whether or not there is an unprocessed called program in the higher-level program that calls the program corresponding to the item that has been processed.

When it is determined in step 44 that the program is the main program, the processing of all the control information items has been completed, so the processing of the output processing unit 4 is ended.

By controlling the output processing as described above, in the case of the example of FIG. 4, by tracing the control table of FIG. 4 (b), each item of the control table becomes a program A → B → C → D → E → F. The processes are performed in the order of → G → H → I, and as shown in FIG. 4 (c), information about each program can be printed out in an appropriate indentation.

〔The invention's effect〕

As is clear from the above description, according to the present invention, the program structure material in the computer system is efficiently and automatically created, so that the labor saving of the material creation and the efficiency improvement of the program maintenance can be achieved, which is a remarkable industrial advantage. effective.

[Brief description of drawings]

 FIG. 1 is a block diagram of a configuration of an embodiment of the present invention, FIG. 2 is a flow chart of processing of a program analysis unit, FIG. 3 is an explanatory diagram of a control table, FIG. The figure is a flowchart of the processing of the output processor. In the figure, 1 is a program storage device, 2 is a processing device, 3 is a program analysis unit, 4 is an output processing unit, 5 is a work storage device, 6 is a control table, 7 is an output device, 10 to 16 and 40 to 45 are Steps of processing, 30, 33 indicate items, 31, 32, 34 to 36 indicate columns.

Claims (1)

[Claims] 1. A program analysis means (3) and a print output means (4) are provided, and the program analysis means (3) mainly executes a program determined by the main program name based on designation of the main program name. As a program, a program that is called from the main program directly and via another program is a called program, starting from the analysis of the main program, and in the ascending order of other programs that pass after the main program until the call. The program names of all the called programs are determined by analyzing each called program, and the called information determined by the program name in the order of determining the control information item of the main program and each program name. The control information item of the program is provided in the control table (6), and each called control information item directly calls the called program. The addresses of the first and last terms of the control information item of the RAM group are stored as the called program item address, and the address of the control information item of the program that directly makes the called program is stored as the calling program item address. Is configured to store predetermined information about the program as output information, and the print output means (4) extracts the control table (6) from the control information item of the main program in a predetermined extraction order. When the output information of each control information item is printed out in a predetermined format and the extraction order is the control information item having a valid called program item address, the called program item address The unextracted control information item of the called program group specified by When a control information item without a gram item address is fetched, a call belonging to the main program or called program with an unfetched control information item is first detected by sequentially tracing the called program item address of the control information item. Returning to the control information item of the program, in the control information item of the called program group called from the main program or the called program, the order in which one item is taken out next in the order of arrangement A program structure material creation processing device characterized by being configured as follows.