JPS62157950A - Translating method for data base operating source program - Google Patents

Abstract

PURPOSE:To analyze the justification of a data base operating instruction by accumulating the information concerning the work area included in the source program into a data base before the data base operating instruction is translated. CONSTITUTION:A data base operating source program 6 is a source program which is translated from now on, and in the program, the contents described by a host language and the data base operating instruction described by the language except the host language are included. Before the translation 14 of the data base operating instruction is executed, the information concerning the work area used by a data base operating instruction 3 included in the data base operating source program 6 is accumulated in the data base. Thus, even when another data base operating source program has the work area at the earlier translated data base operating source program, the justification of the data base operating instruction can be analyzed only based upon the information in the data base and the analyzing logic is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a database operation source Progera J that includes a program part written in a host language and database operation instructions written in a language different from the host language. This paper relates to a database operation source progera J, ff1ll translation method for translating 641 into executable instructions.

[Conventional technology]

Conventionally, this type of method uses a compiler as a preprocessor to translate database operation instructions. ■Either one of two methods was adopted: executing it in phase mode, or extending the compiler so that it could also analyze database manipulation instructions.

[Problem that the invention seeks to solve]

However, if you use a method in which two consecutive pre-processors are implemented in the phase before the compiler, in the phase before that, they are used for data manipulation instructions or data in the database. 2) Analyze the work area. Depending on the type of host word, the compilation unit may be a different source file.
The program may have a work area, and it takes a lot of effort to analyze the consistency between the database operation command and the work area.
There was a problem that required J7t + chic.

In addition, the method of modifying the ``:1 compiler so that it can also handle database manipulation instructions complicates the processing logic of the compiler, and requires modification of the compiler every time the database manipulation commands are expanded. There is a problem.

The present invention solves these conventional problems, and its purpose is to operate in the previous phase of the conventional compiler even when the compilation unit has a work area in a separate source program. It is an object of the present invention to provide a translation method that can reduce the load on a portion corresponding to a preprocessor, and can also reduce the impact on a compiler caused by the expansion of database operation instructions.

[Means for solving problems]

In order to achieve the above object, the present invention includes a program part written in a host language as well as a database operation instruction written in a language other than the POST language, and converts the database operation instruction into a group of instructions in the host language. and further phos I
・Progera J, a database operation source that generates object programs by translating languages;
In the El translation formula, i! of the database operation instruction included in the database operation source program. Before performing the iJ+ translation, the program generation means extracts from the database operation source program only the instruction group related to the declaration of the work area used by database operation instructions to exchange data in the database, and the extracted instruction group is used as a host. A database included in the database operation source program is translated into an intermediate L' language by a language translation means so that information related to a work area used for exchanging data in the database is stored in a program database. When translating the operation command, in step 7, the database operation command translation means calculates the program from the information regarding the work area stored in the program database.
analyzing the validity of the database operation command and translating the database operation command into a host language when the validity is recognized, and the database operation command translated into the host language and the database operation source program; The content written in another host language is translated by the first stage of host language translation to generate a target object program.

[Effect]

Before translating the database operation instructions included in the database operation source program, information about the work area used by the database operation instructions included in the database operation source program is stored in the database. Not only when a database operation instruction included in a database operation source program uses the work area that the own source program has, but also when a database operation instruction included in a database operation source program that has been translated previously is used.
Even if the program has a work area, it is possible to analyze the validity of the database operation command for dysentery based on the information in the database.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a detailed explanatory diagram of the present invention, in which 1 is a control means;
2 is a program generation means, 3 is a keyword operation instruction extraction means, 4 is a database operation instruction translation means, 5 is a host L language translation means, (3 is a database operation source
Program code 7 is a partial source program, 8
is Prog U1, Data Hose, 9 is Offjec I...
It is a program.

The above database operation source program 1 crumb 6 is now IJI Ii length 7. ! :、Drowsing Sauce Bu 11
This includes contents written in the host language and database operation commands written in a pronunciation other than the host language 8E.

FIG. 2 is a flowchart showing an example of the processing of the control means.
Starting process 21 of generation means 2. Start-up process of database operation command extraction means 3 22. Similarly, the control transfer process is performed such that the startup process 23 of the database operation command extraction means 3 is performed in its turn 111.

FIG. 3 is a flowchart showing an example of the processing of the generating means 2. When the generating means 2 is activated,
Cheetah - Input operation source program [j's reading process 31, analysis of instructions to determine whether the read content is an instruction related to the declaration of a work area used for sending and receiving data in the database as a database operation instruction A process 32 and an instruction output process 33 for outputting only a group of instructions related to the declaration of the work area to the partial source program 7 are performed.

FIG. 4 is a flowchart showing a processing example of the database operation instruction extraction means 3. When the database operation instruction extraction means 3 is activated, it executes a source program reading process 41 (starting process 22 of the control stage 1). When the database operation source program 6 is started, the source program is partially read from the source program 7, and when started in the startup process 23, the source program is read from the database operation source program 6). Analysis processing 42 to analyze whether the content is a database operation command or not. Start-up processing of database operation command translation means 4 43. Boss 1 - Start-up processing 44 of language translation means 5 is performed.)6 FIG. When activated, a process 51 for receiving a database operation command from the data input operation command extraction means 3;
Access processing to program/data database 8 52. Database operation command analysis processing 53. Conversion processing of data-input operation commands into host language 54. A notification process 55 of the conversion result to the database operation command extraction means 3 is performed.

FIG. 6 is a flowchart showing an example of the processing of the boss l'''=-word translation means 5, in which the boss one-word translation means 5 receives a database operation command to be activated from the data/base operation command extraction f stage 3. Compilation process 6 of 3 host words from extraction means 3
1. Progera J, the intermediate language behind the compilation results...
Output processing 62 to the data database 8 and processing 63 for creating an object program as an object program 9 from among the compilation results are performed.

Next, the operation of this embodiment will be explained with reference to the drawings.

In FIG. 1, when the control means 1 is first activated 4,
As shown in FIG. 2, the control means I includes a pcogram generating means 2. The control is transferred three times in the order of database operation command extraction stage 10 3 and database operation command extraction means 3 (processes 21 to 23).

As shown in FIG. 3, the program generating means 2 that is started first reads a source program from the database operation source program 6 (process 31), and the read content is used to create a database operation command. It is analyzed whether the command is related to the declaration of a work area used for exchanging data within (processing 32). As a result of the analysis, if the command is a declaration command to be used as a work area by the database operation command, the program generating means 2 outputs it to the partial source program 7 (processing 33).

As a result, the partial source program 7 is composed of only a group of commands in the host language in which the database operation command declares a work area used for exchanging data in the database.

As shown in FIG. 4, the database operation instruction extracting means 3 to be started next first reads the partial source program 7 (processing 41) and analyzes whether the content is a database operation instruction or not. (processing 42). As mentioned above, since the partial source program 7 does not include any database operation instructions, in this case, the process 42 is followed by the process 4.
4 is executed, the host language translation means 5 is started by the start-up process 44 of the host language translation means 5 without performing the start-up process 43 of the database operation command translation means 4.

When the host language translation means 5 is activated, it performs a compile process 61 as shown in FIG. 6, and outputs the intermediate language obtained as a result of the compilation to the program database 8 (process 62). - In the database 8, information regarding the database operation commands included in the database operation source program 6 or the work area used for exchanging data in the database is stored. In addition, in the process shown in FIG.
However, in the present invention, a partial source program translation stage Il! is also created. , y is meaningless, and 7 of the information stored in the program database 8 has meaning.

Next, when the database operation instruction extraction means 3 is started again, the database operation instruction extraction stage 3 reads the database operation source program 1gram 6 by the source program reading process 41 shown in FIG. Extract database operation instructions from the received instructions (process 42)
. As mentioned above, the database operation source program 6 includes database operation instructions, so when the database operation instruction extracting means 3 recognizes the database operation instruction in the process 42, it starts the database operation instruction translation means 4 (processing 43). At this time, the recognized database operation command is simultaneously notified to the database operation command translation means 4.

When the database operation command translation means 4 is activated, the fifth
As shown in the figure, first, the notified database operation command is received (process 51), and in the program database 8 access process 52, 1- accesses the program database 8 and executes the database operation command. Obtain information about the work area to be used.

Then, the database operation command analysis process 5 analyzes the consistency between the obtained work area information and the database operation command.
3, and if the result is correct, the database operation command is converted into a group of commands consisting only of the host i/language commands through the database operation command conversion process 54, and the conversion result is notified to the database operation command extraction means 3 (processing 55).

When the database operation instruction extracting means 3 receives the result converted into the command group of the host language, the database operation instruction extracting means 3 replaces the database operation instruction part in the database operation source program 6 with the conversion result and converts it into the host language as shown in FIG. By the translation means activation process 44, the host word R1j fi
It notifies the translation means 5 and activates it.

In response, the host language translation means 5 operates as shown in FIG. 6, compiles the contents of the notified host language (61), and reads the intermediate language information of the compilation result. Process 62 to output to database 8
), and the compilation result object Progera J.
Process 6 to create objects as objects 1 to 9 and programs 9.
3) Complete the translation process of the database operation source program 6.

As described above, according to this embodiment, information regarding the work area used by database operation instructions included in the database operation source program 6 to exchange data in the database is accumulated in the program database 8, When the translation process of the operation source program 6 is completed and another database operation source program is translated, the other database operation source program has a work area in the database operation source program 6. Even if it is a source program, the database operation instruction translation means 4 can analyze the validity of the database operation instruction included in another database operation source program based on the information stored in the program database 8. becomes.

〔Effect of the invention〕

As explained above, according to the present invention, before translating the data operations commands included in a certain database operation source program, the data operations instructions included in the database operations source program are Only the commands related to the declaration of the work area used for data exchange are extracted and translated, and the information regarding the work area used by the data storage operation commands is stored in the data directory. Even if you have a work area in a previously translated database operation source program, the data contained in another database operation source program. - The validity of the space operation command can be analyzed with respect to only the information in the data space, and the analysis logic is simplified. In addition, since the burden of analyzing the instruction group related to the work area handled by the data domain manipulation command is placed on the host language translation means equivalent to a conventional compiler, the preprocessor, which operates as a preprocessor for the conventional compiler, is It is possible to reduce the load on the corresponding database operation command translation means, and if the database operation commands are expanded, the database operation command translation means can be expanded to reduce the impact on the host language translator. You can also. That is, according to the present invention, it is possible to solve both of the disadvantages of the two conventional methods.

[Brief explanation of drawings]

FIG. 1 is a detailed explanatory diagram of the present invention, FIG. 2 is a flowchart showing an example of processing by the control means 1, FIG. 3 is a flowchart showing an example of processing by the program generation means 2, and FIG. 4 is a database operation command extraction means. FIG. 5 is a flowchart showing an example of processing by the database operation command translation means 4, and FIG. 6 is a flowchart showing an example of processing by the host language translation means 5. In the figure, 1 is a control means, 2 is a program generation means,
3 is a database operation instruction extraction means, 4 is a database operation instruction translation means, 5 is a host language translation means, 6 is a database operation source program, 7 is a partial source program, 8 is a program data base, 9 is an object. It is a program.

Claims (1)

[Claims] In addition to a program portion written in a host language, the program includes database operation instructions written in a language other than the host language, converts the database operation instructions into a group of instructions in the host language, and further translates the host language. In a database operation source program translation method that generates an object program by The program generation means extracts only the instruction group related to the declaration of the work area used for exchanging data, and the extracted instruction group is translated into an intermediate language by the host language translation means, and the database operation command is used to exchange data in the database. When translating database operation instructions included in the database operation source program, the database operation instruction translation means stores information about the work area used for The validity of the database operation command is analyzed from the information regarding the domain, and when the validity is recognized, the database operation command is translated into a host language, and the database operation command translated into the host language and the database operation source file are A method for translating a database operation source program, characterized in that a target object program is generated by translating the content of the program written in another host language by the host language translation means.