JPS62160536A - Cobol syntax converting method - Google Patents

Abstract

PURPOSE:To perform the syntax conversion of COBOL source programs quickly in bulk by registering a correspondence table of COBOL syntax and reading in the COBOL source program in a transfer source to analyze syntax and converting automatically the source program to COBOL language specifications of a transfer destination in accordance with the conversion correspondence table. CONSTITUTION:The COBOL source program is decomposed into one-word units by a program 15 in the first stage of syntax conversion to output intermediate files 17 and 30. Information 40 related to individual words are stored in the intermediate file 17. A source program of COBOL language specifications in the transfer destination is generated from the intermediate file 17 by a program 18 of the second stage of syntax conversion. In this case, words whose conversion is unnecessary are left as they are in the original source program and word whose conversion is necessary are converted in accordance with added conversion parameters by the program 18 to generate the source program. Simultaneously, a source list after conversion is outputted as well.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a Cobol syntax conversion method for converting the syntax of the office programming language Cobol for use between different computers.

[Conventional technology]

In the conventional Cobol syntax conversion method, compiling was performed on the computer to be migrated, and the code was replaced manually according to the instructions of that computer, or a new one was developed to suit the computer to be migrated.

FIG. 3 shows the case of manual replacement. In Fig. 3, 1 is an input/output device, 2 is a Kobol source program,
3 is a source program for Cobol syntax conversion, 4 is a Cobol syntax correction execution program, 5 is a source program after Cobol syntax correction, and 6 is a list of the source program 5 after Cobol syntax correction. The operator operates the input/output device 1 while referring to the source program 2, modifies the source program 3 using the program 4, and obtains a modified source program 5.

[Problem that the invention seeks to solve]

In the manual program conversion work described above,
There were problems such as conversion errors were easy to occur, and it took a lot of time to manually convert a large number of programs.

The present invention has been made in view of these points, and its purpose is to provide a Cobol syntax conversion method that prevents conversion errors and significantly shortens conversion work time by performing conversion work mechanically. It's about getting.

[Means for solving problems]

In order to achieve such an object, the present invention registers a syntax correspondence table in order to use the office programming language COBOL between different computers.

[Effect]

In the present invention, syntax conversion of a Cobol source program between arbitrary computers can be performed by changing the conversion correspondence tables of the source and destination.

〔Example〕

An embodiment of the Cobol syntax conversion method according to the present invention will be described with reference to FIGS. 1 and 2.

In FIG. 1, 11 is a floppy disk (FD) that stores a plurality of source programs to be converted, and 12 is a magnetic tape that stores a plurality of source programs to be converted. A source Cobol source program is stored in a floppy disk 11 or a magnetic tape 12, and a program 13 processes a plurality of source programs to be converted into a single file 14 and outputs the file. The program 15 in the first stage of syntax conversion analyzes the file 14,
The reserved words of the destination Cobol are checked based on the conversion parameters registered in the file 16, and the intermediate file 17 is created by adding information such as the correspondence of Cobols between computers required by the program 18 described later. create.

A program 18 at the second stage of syntax conversion creates a source program group 19 of the language specifications of the destination COBOL from the intermediate file 17, and outputs a source list 20 after conversion.

Next, the operation will be explained. In the program 15 at the first stage of syntax conversion, as shown in FIG.
(equivalent to the intermediate file 17 in FIG. 1) is output. In the intermediate file 17, information 40 regarding each word (start column with prefix blank number of 2 words, attribute of word length of 1 word, whether it is at the beginning of 1 line, whether it is a reserved word of the migration destination computer, etc.) whether syntax conversion is necessary, etc.). Second syntactic conversion
In the step program 18, a source program of the language specifications of the destination COBOL is created from the intermediate file 17.

At this time, the program 18 creates a source program by leaving words that do not need to be converted as they are in the original source program, and converting words that need to be converted according to the added conversion parameters. It also outputs the converted source list at the same time.

〔Effect of the invention〕

As explained above, in order to use the office programming language Kobol between different computers, the present invention registers a syntax correspondence table to read the source program of the source Kobol, analyze the syntax, and convert it. Since the source program can be automatically converted into the target Cobol language specification according to the correspondence table, the syntax conversion of a large number of Cobol source programs can be quickly and easily performed in a short period of time.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram for explaining the Cobol syntax conversion method according to the present invention, Figure 2 is an explanatory diagram for explaining the decomposition method of a Cobol source program, and Figure 3 is an explanatory diagram for explaining the conventional Cobol syntax conversion method. FIG. 11...Floppy disk, 12...Magnetic tape, 13,15.18...Program, 14.1
9...Source program, 16...Syntax conversion parameters, 17...Intermediate file, 20...Source list.

Claims (1)

[Claims] A Cobol syntax conversion method characterized by converting the syntax of a program between arbitrary computers by registering a syntax correspondence table in order to use the office programming language Cobol between different computers.