JPH04248624A - Program conversion processor - Google Patents

Abstract

PURPOSE:To obtain a program conversion processor capable of executing the processing of a converter by automatically extracting required information from conversion specifications, with respect to source program conversion processing for switching or the like of a computer system. CONSTITUTION:The definition of a syntax to be converted in conversion specifications 2 is expressed by the character string of a fixed part constituting each required syntax and the data attribute of a variable part, and required data definition and conversion procedures are expressed by a prescribed expression and respective conversion procedures and respective conversion indicating codes are allowed to correspond to each other with respect to information, where conversion indicating codes are added to parts to be converted of the syntax, and the definition of conversion indication, and a conversion specification extracting part 5 generates syntax analysis data from the definition of the syntax to be converted of conversion specifications and generates a required conversion program, which has procedures corresponding to respective conversion indicating codes, from the conversion indicating definition. A conversion processing part 6 refers to syntax analysis data to detect the syntax to be converted from the source program and executes conversion determined by the conversion indicating code.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is useful for transferring COB data to be executed on a certain computer system during migration of computer systems.
The present invention relates to a program conversion processing device for converting a source program written in an OL programming language or the like so that it can be executed on another system.

0002

[Background Art] In computer system migration work, etc.
Conversion of source programs may require a large amount of work.

[0003] In such source program conversion work, the correspondence between the command statements to be converted and the command statements after conversion is defined in the conversion specification, and then a processing procedure is carried out to perform the conversion according to the conversion specification. Create a converter program specification that defines

[0004] Once the converter program is completed by coding and testing based on the converter program specifications, the necessary source program is input and the conversion process is executed to generate the converted source program. The work will be done.

[0005] When a specification correction such as a change or addition is made to the conversion specification, the specification of the converter program is changed or added accordingly, and the part of the converter program that needs correction is searched for by following the program logic. , implement any necessary corrections.

[0006]

[Problem to be Solved by the Invention] Conversion specifications generally have contents for each user system to be migrated, and a converter program must be created accordingly. However, in the conventional procedure described above, it is difficult to create a converter program. It requires a relatively large amount of man-hours, and as a result, if there are many modifications such as changes and additions, problems arise such as it becomes difficult to maintain and manage the synchronization between the modified specifications and the converter program.

The object of the present invention is to provide a program conversion processing device that can automatically extract necessary information from a conversion specification and execute converter processing.

[0008]

Means for Solving the Problems FIG. 1 is a block diagram showing the configuration of the present invention. The figure shows the configuration of a program conversion processing device, in which a given source program 1 is converted according to a given conversion specification 2.
has a converted syntax definition 3 and a conversion instruction definition 4.

[0009] Definition 3 of the converted syntax is a predetermined format in which each required syntax is represented by a character string of a fixed part and a data attribute of a variable part, and a conversion instruction symbol is attached to the part to be converted in the syntax. The conversion instruction definition 4 has information in a predetermined format that expresses a required data definition and conversion procedure using a predetermined expression, and associates each conversion procedure with each conversion instruction symbol.

A conversion specification extraction section 5 and a conversion processing section 6 are provided, and the conversion specification extraction section 5 receives the conversion specification 2 as input.
Syntax analysis data 7 is generated from the converted syntax definition 3, and a required conversion program 8 having procedures corresponding to each conversion instruction symbol is generated from the conversion instruction definition 4.

The conversion processing unit 6 converts the source program 1 into
The syntax analysis data 7 is referred to, a syntax that corresponds to the to-be-converted syntax is detected, and the conversion program 8 executes the procedure determined by the conversion instruction symbol specified for the to-be-converted part of the syntax to be converted. A source program 9 is generated.

0012

[Operation] With the program conversion processing device of the present invention, a user indicates a syntax to be converted in a conversion specification, specifies a conversion part therein with a conversion instruction symbol, and also specifies a conversion instruction symbol corresponding to the conversion instruction symbol in a conversion instruction definition. , if we define a procedure that describes the content of the conversion, we get
Conversion processing that matches the language specifications is automatically executed according to the syntax analysis function, general-purpose conversion function, etc. prepared in the program conversion processing device, and the procedures defined by the conversion instructions.

[0013] Therefore, the conversion work except for the creation of the conversion specification is automated and processed quickly, and even if there is a modification of the conversion specification, it is processed by modifying the conversion specification, so that the modification of the specification and the conversion process are It becomes easy and reliable to synchronize with the conversion specification, and the management of the entire conversion work can be unified using the conversion specification.

[0014]

[Example] Fig. 2 is a diagram for explaining an example of the contents of the conversion specification 2. Such a specification is created on a floppy disk or the like as a document for an appropriate word processor, and then transferred to a program conversion processing device. Make it read directly.

In the converted syntax definition 3 in FIG. 2, three lines of syntax are shown below the explanatory text starting with "*". Here, the parts enclosed in "[" and "]" indicate parts that may or may not be present. The numbers in parentheses ((1) to (3) in the example shown) in the syntax (at the end of each line in the example shown) are conversion instruction symbols, and correspond to the numbers written in the conversion instruction definition described below. ,
Indicates the part to which the transformation should be applied.

Conversion instruction definition 4 in FIG. 2 has data definitions in the first five lines, in which data to be referred to by "computer name" in the subsequent conversion procedure is defined. This example is 5
This is an example of defining byte character data "FCOMP".

Procedures (1) to (3) are defined as shown in the diagram using a programming language with expressions similar to normal Japanese sentences after ":**", and the procedures (1) and (3) are is a conversion procedure that replaces the corresponding word indicated by "(1)" etc. in the syntax with "computer name" data, and also comments out the original line, and (2) corresponds to It instructs the conversion procedure to comment out lines,
For example, in the case of the COBOL language, commenting is performed by prefixing the corresponding line with "*".

The conversion specification extraction unit 5 converts the syntax content specified in the to-be-converted syntax definition 3 as described above into a table format that is easy to refer to in syntax analysis, and adds conversion instruction symbols and other control information. to create syntactic analysis data 7.

[0019] Also, from the conversion instruction definition 4 to the conversion program 8
is generated, and each conversion instruction symbol of the parsed data 7 is associated with the entrance address of the procedure determined by the number. The conversion processing unit 6 analyzes the input source program character string by referring to the syntax analysis table 7, outputs lines of character strings that do not apply as is, and when it detects the corresponding syntax, converts the characters to be converted. Passes the string to the procedure specified by the conversion instruction symbol, requests processing, and generates and outputs a converted string based on the processing result.

FIG. 3(a) is an example of the source program 1 before conversion, and by processing it according to the conversion specifications shown in FIG. 2, the source program shown in FIG. 3(b) is output as the converted source program 9. be done.

[0021]

[Effects of the Invention] As is clear from the above description, according to the present invention, necessary information is automatically extracted from the conversion specification in the process of converting a source program for migration of a computer system, etc. Since the converter processing can be executed, program conversion work can be processed quickly, and modification of conversion specifications can be easily executed and managed, which has a significant industrial effect of improving work efficiency such as migration. There is.

[Brief explanation of the drawing]

[Figure 1] Block diagram showing the configuration of the present invention

[Figure 2]
Diagram explaining conversion specifications

[Figure 3] Diagram showing an example of a source program

[Explanation of symbols]

1 Primitive program 2 Conversion specifications 3. Converted syntax definition 4 Conversion instruction definition 5 Conversion specification extraction part 6 Conversion processing unit 7 Syntactic analysis data 8 Conversion program 9 Converted source program

Claims (1)

[Claims] Claim 1: In the process of converting a given source program (1) according to a given conversion specification (2), the conversion specification (2) includes a syntax definition to be converted (3) and a conversion instruction. Definition (4), and the converted syntax definition (3) is expressed by a character string of a fixed part constituting each required syntax and a data attribute of a variable part, and is converted into a converted part in the syntax. It has information in a predetermined format with instruction symbols attached, and the conversion instruction definition (
4) has information in a predetermined format in which the required data definition and conversion procedure are represented by a predetermined expression, each conversion procedure is associated with each conversion instruction symbol, and the conversion specification extraction unit (5)
and a conversion processing section (6), and the conversion specification extraction section (5).
) takes the conversion specification (2) as input, generates syntactic analysis data (7) from the converted syntax definition, and generates a required conversion program having procedures corresponding to each conversion instruction symbol from the conversion instruction definition. (8), and generates the conversion processing unit (6
) refers to the syntactic analysis data (7) from the source program (1), detects a syntax that corresponds to the to-be-converted syntax, and converts it by the conversion instruction symbol specified for the to-be-converted part of the syntax. A program conversion processing device characterized in that it is configured to execute the procedure of the conversion program (8) determined.