Method and apparatus for automatically generating program

• US 4,949,253 A
• Filed: 01/20/1988
• Issued: 08/14/1990
• Est. Priority Date: 01/23/1987
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd., Hitachi Seibu Soft Ware Company Limited
• Inventors: Yokoyama, Takehiro, Chigira, Eiki
• Primary Examiner(s): Heckler, Thomas M.
• Application Number:
  US07/145,989
• Time in Patent Office: 937 Days
• Field of Search: 364/200
• US Class Current: 717/107
• CPC Class Codes: G06F 8/423 Preprocessors

Abstract

Automatic program generation method and apparatus in a computer program development support system having an input unit for inputting input information relating to data declaration and manner of use of data, a memory unit for storing a plurality of program part phototypes each including modifyable information and a processing unit for generating a program part from a program part prototype, wherein the input information is analyzed, one of the program part prototypes stored in the memory unit is selected in accordance with the analysis of the input information, and the selected program part prototype is substituted in accordance with the analysis of the input information to generate a program.

Claims

1. An automatic program generation apparatus for automatically generating a program for processing data comprising:

input means for inputting input information elements representing at least a type of data to be processed by a program to be generated and a type of processing to be performed by said program to be generated;

memory means for storing a plurality of prototype parts of a program each having at least a declaration of data part and a procedure of data processing part, wherein each declaration of data and procedure of data processing parts are described by modifiable information elements which are modifiable by an associated element of said input information elements;

analyzing means for analyzing said input information elements;

selection means for selecting a prototype part of a program stored in said memory means in accordance with a result of the analyzing operation performed by the analyzing mean on said input information elements; and

generation means for substituting said input information elements for modifiable information elements of said selected prototype part of a program to thereby develop said selected prototype part of a program into a part of said program to be generated.

2. An automatic program generation apparatus according to claim 1, wherein sat least one of said plurality of prototype parts of a program further includes at least one control statement for controlling flow of a procedure of data processing part thereof, said control statement being described by modifiable information elements each being modifiable by an associated one of said input information elements,

said generation means includes first means for modifying the control statement by substituting associated input information elements for the modifiable information elements of the control statement, second mean for developing an associated part of the procedure of data processing part in accordance with a condition defined by the modified control statement to thereby obtain a developed prototype part of a program having the procedure of data processing part with the developed associated part and the data declaration of data part, and third means for substituting associated input information elements for the modifiable information elements of the developed prototype part of a program thereby obtaining said program part of said program to be generated.

3. An automatic program generation apparatus according to claim 2, wherein said control statement is for repeatedly developing the associated part of the procedure of data processing part of said prototype part of a program;

said generation means further includes judging means for judging whether development of the associated part of the procedure of data processing part is to be performed repeatedly in accordance with the condition defined by the modified control statement; and

said second means, when said judging means judges that the development is to be performed repeatedly, repeatedly develops the associated part of the procedure of data processing part in accordance with the condition defined by the modified control statement to obtain the developed prototype having the procedure of data processing part with repeatedly developed associated part and the declaration of data part.

4. An automatic program generation apparatus according to claim 3, wherein a range of the associated part of the procedure of data processing part and a number of repetitions of development are defined by the condition of the modified control statement.

5. An automatic program generation apparatus according to claim 2, wherein said control statement is for developing only once, the associated part of the procedure of data processing part of said prototype part of a program;

said generation means further includes judging means for judging whether development of the associated part of the procedure of data processing part is to be performed once in accordance with the condition defined by the modified control statement; and

said second means, when said judging means judges that the development is to be performed once, develops the associated part of the procedure of data processing part only once in accordance with the condition defined by the modified control statement to obtain the developed prototype part of a program having the procedure of data processing part with a developed associated part and the data declaration of data part.

6. An automatic program generation apparatus according to claim 5, wherein a range of the associated part of the procedure of data processing part is defined by the condition of the modified control statement.

7. An automatic program generation apparatus according to claim 1, wherein said input information elements have a selection rule and each prototype part of a program has a selection rule;

and

said selection means includes means for comparing the selection rule of the input information elements with the selection rules of said prototype parts of a program and means for selecting a prototype part of a program whose selection rule coincides with the selection rule of the input information elements.

8. An automatic program generation apparatus according to claim 7, wherein each of said selection rules has an information element representing a type of processing to be performed by said program to be generated.

9. An automatic program generation apparatus according to claim 8, wherein each of said selection rules further has at least one information element representing a type of data.

10. An automatic program generation apparatus according to claim 1, wherein one of said modifiable information elements is a macro name.

11. An automatic program generation method for automatically generating a program for processing data, comprising the steps of:

inputting input information elements representing at least a type of data to be processed by a program to be generated and a type of process to be performed by said program to be generated;

storing, in a memory, a plurality of prototype parts of a program each having at least a declaration of data part and a procedure of data processing part wherein each declaration and procedure parts are described by modifiable information elements which are modifiable by an associated element of said input information elements;

analyzing said input information elements;

selecting a prototype part of a program stored in said memory in accordance with a result of said analyzing step; and

substituting said input information elements for modifiable information elements of said selected prototype part of a program to thereby develop said selected prototype part of a program into a part of said program to be generated.

12. An automatic program generation method according to claim 11, wherein at least one of said plurality of prototype parts of a program further includes at least one control statement for controlling flow of a procedure of data processing part thereof, said control statement being described by modifiable information elements each being modifiable by an associated one of said input information elements;

and

said substituting step further includes the steps of

modifying the control statement by substituting associated input information elements for the modifiable information elements of he control statement,

developing an associated part of the procedure of data processing part in accordance with a condition defined by the modified control statement to thereby obtain a developed prototype part of a program having the procedure of data processing part with the developed associated part and said data declaration of data part, and

substituting associated input information elements for the modifiable information elements of the developed prototype part of a program, thereby obtaining said program part of said program to be generated.

13. An automatic program generation method according to claim 12, wherein said control statement is for repeatedly developing the associated part of the procedure of data processing part of said prototype part of a program

said substituting part further includes the steps of

judging whether development of the associated part of the procedure of data processing part is to be performed repeatedly in accordance with the condition defined by the control statement;

and

said developing step includes a step of repeatedly developing the associated part of the procedure of data processing part in accordance with the condition defined by the modified control statement to obtain the developed prototype having the procedure of data processing part with the repeatedly developed associated part and the declaration of data part, when the judging step judges that the development is to be performed repeatedly.

14. An automatic program generation method according to claim 13, wherein a range of the associated part of the procedure of data processing part and a number of repetitions of development are defined by the condition of the modified control statement.

15. An automatic program generation method according to claim 12, wherein said control statement is for developing, only once, the associated part of the procedure of data processing part of said prototype part of a program;

wherein said substituting step further includes the steps of

judging whether development of the associated part of the procedure of data processing part is to be performed once in accordance with the condition defined by the modified control statement; and

wherein said developing step includes the step of

developing the associated part of the procedure of data processing part, only once, in accordance with the condition defined by the modified control statement to obtain the developed prototype part of a program having the procedure of data processing part with a developed associated part and the declaration of data part, when the hedging step judges that the development is to be performed only once.

16. An automatic program generation method according to claim 15, wherein a range of the associated part of the procedure part is defined by the condition of the modified control statement.

17. An automatic program generation method according to claim 11, wherein said input information elements having a selection rule and each prototype part of a program has a selection rule;

and

said selecting step includes the steps of

comparing the selection rule of the input information elements with the selection rules of the prototype parts of a program, and

selecting a prototype part of a program whose reelection rule coincides with the selection rule of the input information elements.

18. An automatic program generation method according to claim 17, wherein each of said selection rules has an information element representing a type of processing to be performed by said program to be generated.

19. An automatic program generation method according to claim 18, wherein each of said selection rules further has at least one information element representing a type of data.

20. An automatic program generation method according to claim 11, wherein one of said modifiable information elements is a macro name.