JP3278860B2 - Program generation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program generation method for automatically generating a processing program from information in which an outline of processing is described in a high-level language, and relates to automatic generation of a highly maintainable program.

[0002]

2. Description of the Related Art In a program generation method in which a processing outline is input in a high-level language and a processing program is automatically generated, a target partial differential equation and an analysis area are described in a high-level language, and numerical calculation is performed from the information. FORT for
There is a method for automatically generating a RAN program. In the generated FORTRAN program in this case, each processing unit does not indicate the content of the processing, and the generated FORTRAN program is not generated.
The maintainability of N programs is not considered.

A related technique of this kind is disclosed in, for example, Japanese Patent Application Laid-Open No. Sho 62-212771.

[0004]

The above prior art has the following problems.

When information necessary for processing is input in a high-level language and a processing program for the processing is automatically generated, no processing unit in the generated program indicates the content of the processing. However, there is a problem that it is difficult to decipher the program and the maintainability is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to display a description indicating the processing content immediately before each processing unit in a generation program, thereby facilitating decoding of the generation program and improving maintainability.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a program creating method in a computer for creating a numerical calculation processing program from input information described in a high-level language by using a table creation processing unit. ,
Used in the above-mentioned numerical calculation processing program based on force information
Variable, the above-mentioned variable area, and the above-mentioned area boundary type.
Create an internal information table having
Then, from the above input information, the above numerical calculation processing program
Is generated based on the above-mentioned internal information table.
Variables used in the numerical calculation processing program described above and the variables described above
Area and the boundary type of the above-mentioned area are detected,
The above-mentioned detected variables and the above-mentioned variables in the calculation processing program
Area and the above-mentioned area boundary type are described as comments
It is achieved by. The object of the present invention is
A program creation system in a computer for creating a numerical calculation processing program from input information described in a high-level language, wherein a variable used in the numerical calculation processing program and a variable used in the numerical calculation processing program based on the input information are described. A table creation processing unit that creates an internal information table with the area and the boundary type of the area as the internal information,
When generating the above-mentioned numerical calculation processing program from the above-mentioned input information, the variable used in the above-mentioned numerical calculation processing program, the area of the above-mentioned variable, and the boundary type of the above-mentioned area are detected based on the above-mentioned internal information table. It is achieved by providing a process content analysis processing unit to write the variable detected previously described in the aforementioned numerical processing program and area of the aforementioned variables and border type of the aforementioned region as a comment.

[0008]

The object and the processing conditions of each processing unit in the generation program are detected from the internal information used at the time of the program generation processing, and are output as comments immediately before each processing unit in the generation program is generated. Decoding of what the generation program is processing in each processing part in the generation program is facilitated, and maintainability is improved. Outputting as a comment does not affect execution performance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of the present embodiment. The program generation device 102 of the present invention includes a syntax analysis unit 1 for detecting whether or not input information is grammatically correct from input information 101 in which information indicating an outline of processing is described in a high-level language.
03, a table creation processing unit 105 for creating an internal information table 104 for storing internal information necessary for the program creation processing, and what a program to be output from the information created by the table creation processing unit 104 processes. And a program generation processing unit 111 that outputs the generation program 112 based on the data stored in the internal information table 104. The processing content analysis unit 106 decodes a target decoding processing unit 107 that decodes an object to be processed from the contents of the internal information table 104, a range decoding processing unit 108 that decodes a range covered by the processing, and decodes conditions for processing. Conditional decryption processing unit 109, decryption result output unit 110 that outputs the decrypted result into generation program 112
Consists of

An embodiment will be described below.

FIG. 2 is a diagram showing input information for automatically generating a numerical simulation program of a physical phenomenon according to the present invention. The information 201 on the shape of the region where the physical phenomenon occurs and the grid division of the region, the basic equation 202 governing the physical phenomenon, and the information on the boundary conditions 203 that must be satisfied by the basic equation at the boundary of the region are expressed in a high-level language. Describe and enter.

FIG. 3 shows an example in which the input information of FIG. 2 is described in a high-level language. Numeral 301 designates that analysis is performed using a difference method as an analysis method, 302 designates the shape of a region and grid division of the region, 303 designates declaration of variables used in a numerical simulation program, 304 designates boundary conditions, and 305 Is the specification of the calculation algorithm. Based on the input information describing the processing outline, the syntax analysis processing unit 103 checks the error of the input information, and then, in the table creation processing unit 105, the analysis area is a set of grid points having the same processing program. Divided into small areas,
An internal information table 104 required for the program generation processing is created.

FIG. 4 is a diagram showing the result of small area division.
The small area is a set of grid points 401, x
Set 402, x of grid points in contact with the downward boundary
Of lattice points 403, y that are in contact with the upward boundary
Set of grid points 404, y in contact with the downward boundary
Set 405, x of grid points touching the upward boundary
A set of lattice points 406 that are in contact with the boundary in the downward direction, the y direction, and the downward direction, a set 407 of lattice points that are in contact with the upward boundary, in the x direction, in the y direction, and a lattice point that is in contact with the downward boundary in the x direction, in the y direction. The set 408 is divided into nine small regions of a set 409 of lattice points that are in contact with the upward boundary in the x direction and the y direction. The table creation processing unit 105 divides the analysis area from the set 401 into nine small areas shown in the set 409, and creates the internal information table 104.

FIG. 5 shows the structure of the internal information table 104. The internal information table 104 includes index information (index range), area type (information as to whether the area is an internal area or a boundary), and boundary information (in which direction the boundary is in the case of a boundary) shown in FIG. ), A coordinate management table 503 storing coordinate values corresponding to indexes in each direction of the analysis area, and a variable to be obtained (a target variable) and a variable to be referred to (a reference variable). A variable storage table 504 is provided.

FIG. 6 is a diagram showing a processing method of the processing content analysis unit 106 for outputting a summary of processing as a comment from the internal information table 104 for each small area on a generation program. The target decryption processing unit 107 refers to the target variable stored in the variable storage table 504 to detect what the processing program generated is to calculate, and the range decryption processing unit 108 performs a region division information table A coordinate range to be processed by the processing program generated from the relationship between the index information indicating the range of the small area stored in the table 502 and the coordinate management table 503 storing the coordinate values corresponding to the index for each direction is detected. The decryption processing unit 109 detects information on the location of the area to be processed by the processing program from the area type and the boundary information stored in the area division information table 502. The decryption result output unit 110 outputs the data output by the target decryption processing unit 107, the range decryption processing unit 108, and the condition decryption processing unit 109 as comments in the generation program.

FIG. 7 is a diagram showing data output by the processing content analysis processing unit 106. 701 is a target analysis processing unit 1
07, data to be output when a variable to be processed is detected,
Reference numeral 702 denotes data to be output after the condition decoding processing unit 109 determines whether the area is an internal area or a boundary area. If the area is an internal area, “INNER REGI
ON ', if it is a boundary' BOUNDARY RE
GION 'data is created. Reference numeral 703 denotes data output when the boundary direction is detected by the condition decoding processing unit 109 when the boundary is the boundary.
BOUNDARY ', if it is a boundary in the y direction' Y
If the boundary is BOUNDARY, in both the x and y directions, data "XY BOUNDARY" is created. Reference numeral 704 denotes a range decryption processing unit 108 which detects the coordinate information of the small area being processed from the index information of the small area stored in the internal information table 104 and the coordinate management table 503 storing the coordinate values for each index. This is the data to be output later. Decryption result output unit 110
Then, the data of 701, 702, and 703 are output on the generation program.

FIG. 8 is a diagram showing an example of the generation program. The generation program 801 is a processing part for the input information set 401 indicated by the designation 301. After outputting the comment 802 indicating that the variable to be obtained is “FAI”, the comment 401 indicating that the set 401 is an interior point area that is not in contact with any boundary is an interior point area.
03, and further, since the index range is 1 to 6 in both the x and y directions, the coordinate range indicated by the comments 804 and 805 is output. Reference numeral 806 denotes a program for generating a processing portion of the set 402. The variable to be found is' FA
After outputting the comment 807 indicating that it is I ',
Since the set 402 is an area that is in contact with the boundary in the x direction, a comment 808 meaning the boundary is output, and further, a comment 709 meaning the area is a boundary in the x direction is output. Since the index range is 1 to 6 in the x direction and 0 to 0 in the y direction, comments 810 and 81
Outputs 1.

Although the above embodiment has been described by way of example, generally, the range of the above processing and the conditions for performing the processing may be collectively referred to as processing conditions. Applicable to programs with conditions.

[0019]

According to the present invention, when automatically generating a processing program from information input in a high-level language that describes an outline of a processing, the processing target and processing are performed for each processing unit of the processing program. Since the condition is output as a comment on the generation program, the decipherment of the generation program is facilitated, and the maintainability is improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a program generation device according to an embodiment of the present invention.

FIG. 2 is a diagram showing analysis conditions for performing a numerical simulation of a physical phenomenon.

FIG. 3 is a diagram illustrating an example of an input condition in a high-level language.

FIG. 4 is a diagram illustrating an example of a region division result obtained by dividing an analysis region into grid points each having a discrete formula equal to each other.

FIG. 5 is a diagram showing a configuration example of an internal information table used when generating a program.

FIG. 6 is a diagram illustrating a processing outline of a processing content analysis unit;

FIG. 7 is a diagram exemplifying output data of a processing content analysis unit;

FIG. 8 is a diagram illustrating an example of a generation program.

[Explanation of symbols]

 101: input information, 104: internal information table, 105: table creation processing unit, 106: processing content analysis unit, 107: target decryption processing unit, 108: range decryption processing unit, 109: conditional decryption processing unit, 110: decryption result Output unit: 801: generation program 806: generation program

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masayoshi Tamura 5030 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Japan, Software Development Division, Hitachi, Ltd. (56) References JP-A-63-86031 (JP, A) JP-A-2-89172 (JP, A) JP-A-1-145723 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 9/44 G06F 9/06

Claims (2)

(57) [Claims] The contents of processing are described in a high-level language.
To create a numerical calculation processing program from input information
A method of creating a program on a machine,In the table creation processing section, the number is calculated based on the input information.
Variables used in the value calculation processing program and areas of the variables
Create an internal information table with the boundary type of the area
And In the processing content analysis processing unit, the numerical calculation from the input information
When generating a processing program, the internal information table
Variables used in the numerical calculation processing program based on
Detecting the area of the variable and the boundary type of the area,
The detected variable and the variable in the numerical calculation processing program
Area and the boundary type of the area are described as comments.
A program creation method characterized by the following. 2. A program creation system in a computer for creating a numerical calculation processing program from input information described in a high-level language, wherein a variable used in said numerical calculation processing program based on said input information and A table creation processing unit that creates an internal information table having a variable area and a boundary type of the area; and, when generating the numerical calculation processing program from the input information, the numerical calculation processing program based on the internal information table. detecting a boundary type of the an area of the variable variable region used in, serial and border type of the numerical processing program to the detected variable and the variable region and the region as a comment
A program creation system comprising: a processing content analysis processing unit to be described .