JPH11126159A - Device and method for automatically generating c language body structure member allocation block diagram, and recording medium recording automatic generation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically generate the member allocation block diagram of a body structure from a source file. SOLUTION: The automatic generation is performed by a processing 102 for reading the member name and attribute of the body structure from a source file 101, a processing 105 for specifying the size of a member from the read attribute of the member, a processing 106 for finding the offset of the member in the body structure from the size of the member and finding the size of the body structure from the size of the member in the body structure, and a processing 110 for preparing the member allocation block diagram 110 of the body structure from the name, size and offset value of the member of the body structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic generating apparatus, an automatic generating method, and a recording apparatus for automatically generating a member allocation configuration diagram of a C-language structure from a manufactured source file in software development. Regarding the medium.

[0002]

2. Description of the Related Art When a structure name, a data type of each member and a variable name are stored in a definition file, necessary commands and symbols are added according to the structure definition format.
An example of a technique for automatically creating a source file in which a structure is defined is described in JP-A-6-161772. The automatic generation technology of such software,
Of course, this contributes to the efficiency of software development, but in software development, managing the created software is also a very important issue. Conventionally, this kind of software management has been generally performed by a method of creating and storing a document representing software specifications. In the case of the C language, a software developer manually creates a structure allocation configuration diagram from a source file.

[0003]

By the way, it takes a great deal of labor and time to manually create a structure assignment diagram of a structure from a structure definition in a source file. This is because the creation of a structure assignment diagram of a structure requires knowledge of the concept and definition of the structure of the C language and the knowledge of the compiler, and also calculates the size of members and offsets required in the creation work. This is because the calculation becomes more complicated as the structure becomes larger. In addition, when the attribute defined as typedef in the source file is changed, the members of the structure using the typedef name are identified, and a great deal of labor and time are required to change the member allocation configuration diagram of all structures. Becomes The reason is that the typedef definition is an attribute that can be arbitrarily defined by the developer, and if the size of the attribute is changed, the member assignment of the structure is changed, and the affected area must be examined.

The present invention has been made in view of the above-described circumstances, and has an automatic generation apparatus which can automatically generate a member assignment configuration diagram of a structure from a source file, which has been conventionally manually created. It is an object of the present invention to provide an automatic generation method and a recording medium on which the automatic generation method is recorded.

[0005]

According to the present invention, there is provided means for reading a member name and an attribute of a structure from a source file (FIG. 1).
And a means for specifying the size of the member from the read attribute of the member (reference numeral 10 in FIG. 1).
5) means for obtaining the offset of the member in the structure from the size of the member and obtaining the size of the structure from the members constituting the structure (reference numeral 105 in FIG. 1)
And the structure member assignment configuration diagram based on the names, sizes, and offset values of the structure members (reference numeral 11 in FIG. 1).
(0) in FIG. 1 (109 in FIG. 1).

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a functional configuration of a program for automatically generating a structural member assignment configuration diagram according to an embodiment of the present invention. This automatic generation program reads the names and attributes of the members of the structure from the source file 101, and reads the structure member table 1
11 and member information acquisition processing 102 to be set in the size conversion table 112, and typedef from the source file 101.
Typedef information acquisition processing 103 for reading the typedef name / attribute of the definition and setting it in the size conversion table 112
And the size of the attribute of the typedef information set in the size conversion table 112, the typedef size calculation processing 104 to be set in the size conversion table 112, the size of the members of the structure member table 111 are specified, and the structure member table The member size calculation processing 105 to be set in the member 111 and the offset value in the member structure from the member size in the structure member table 111 are obtained and set in the structure member table 111, and the size of the structure is obtained and the size conversion table 112 is obtained. Offset calculation processing 106 to be set, and structure member allocation information file creation processing 107 for outputting the contents of the structure member table to the structure member allocation information file 108
And a structure member assignment configuration diagram creation process 109 for creating a structure member assignment configuration diagram 110 from the contents of the structure member assignment information file 108. The details of each of these processes are as follows.

First, in a member information acquisition process 102, a character string "st
Until the search for “ruct” is performed and the character string “@” at the end of the structure definition is searched, the member names and attributes of the member definitions are extracted and the tag names 20 of the structure member table 111 illustrated in FIG.
1. Member name 202 and size 204 are set respectively. In addition, structure attributes (struct tag name)
Is set in the attribute 301 of the size conversion table 112 illustrated in FIG.

In the typedef information acquisition process 103,
The typedef structure definition start character string "typedef" is searched from the source file 101, and the typedef
Extract up to the character string ";" at the end of f definition and type
The edef name and attributes are extracted, and the size conversion table 112 (FIG. 3)
(See Reference) attribute 301 and typedef name.

[0009] In the typedef size calculation processing 104, for an item having a typedef name set in the size conversion table 112, a search is performed for an item corresponding to the attribute 301, for which the size 303 is set from the size conversion table 112 and which has the same attribute. Applicable size 303 and allocation size 3
04 is set as the search source size 303 and the allocation size 304. However, if the attribute is a pointer, the size is “4”. When the attribute is an array, a value obtained by multiplying the size of the array by the size is set as the size 303 (see FIG. 3).

In the member size calculation processing 105, the size of a member of the structure member table (see FIG. 2) for which the size 204 has not been set is obtained. The size is searched for from the size conversion table 112 (see FIG. 3) having the same size 303 as the size 303 is set. Applicable size 3
03 and allocation size 304 are used as search source sizes 204 and 20
Set to 5. If the member is a bit field, the bit length is set to bit 206. However, if the attribute is a pointer, the size is “4”. When the attribute is an array, a size obtained by multiplying the size of the array by the size is set as the size 303.

In the offset calculation processing 106, calculation is performed up to the point where the member size of the structure member table 111 (see FIG. 2) is set. The offset is calculated from the member size 204 and the allocated size. Specifically, it is as follows.

When the allocation size 205 of the member to be calculated is “1”, the value obtained by adding the size of the previous member to the offset 208 of the previous member is set as the offset of the member to be calculated, and is set as the offset 208.

When the allocation size 205 of the member to be calculated is “2”, if the value obtained by adding the size of the previous member to the offset 208 of the previous member is divisible by “2”, the value is calculated as the offset of the member to be calculated. And set the offset 208. If it is not divisible, a value obtained by adding “1” to the value is set as the offset of the member to be calculated, and is set as the offset 208.

If the allocation size 205 of the member to be calculated is "4", and if the value obtained by adding the size of the previous member to the offset 208 of the previous member is divisible by "4", the value is calculated as the value of the member to be calculated. The offset is set as the offset 208. If the value is not divisible, the value obtained by adding the minimum value divisible by “4” to the value is set as the offset of the member to be calculated, and is set as the offset 208.

In the case of a structure in which offsets 208 of all members are set, a value obtained by adding the size 204 of the last member to the offset 208 of the last member is defined as the size of the structure.

If the allocation size 205 includes at least one of “4”, the structure size is obtained by adding the minimum value divisible by 4 to the structure size, and the size conversion table 112
And the allocation size 304 is set to “4”.

Otherwise, if the allocation size 205 includes at least one of “2”, the structure size is obtained by adding the minimum value divisible by “2” to the structure size, and the size conversion table 112 is used. And the allocation size 305 is set to “2”.

Otherwise, the structure size is set as it is in the size 303 of the size conversion table 112, and the allocation size 3
05 is set to “1”.

Next, in the structure member assignment information file creation processing 107, the contents set in the structure member table 111 are output to the structure member assignment information file 108. FIG. 4 shows the structure member allocation information file 10.
8 illustrates the contents of FIG.

Structure member allocation configuration diagram creation processing 10
In step 9, the structure member allocation information file 108 is read, and a structure member allocation configuration diagram 110 is created according to the contents. Hereinafter, the structure member assignment configuration diagram creation processing will be described with reference to FIGS. 4 and 5.

In FIG. 4, when the first column of the structure member allocation information file 108 is "|", it is assumed that the line defines the tag name of the structure, and the structure member allocation configuration diagram (FIG. 5) Then, the structure tag name 501
And a byte separator 502 are displayed.

Structure member allocation information file 108
If the first column of (FIG. 4) is other than "|", it is regarded that the line is defined for the member assignment, and the display 503 of the member is performed (FIG. 5). The offset value is "4"
If it is divisible by, a display 504 of the number of words is performed (FIG. 5).

A frame corresponding to the size value is displayed, and a member name is displayed therein. If the member name cannot be displayed in the frame, "n)" (refer to reference numeral 506) indicating the reference is displayed, and the member name 507 is displayed at the end of the structure allocation diagram.

When the value of the bit offset is set, the size of the frame is obtained in bit units. The size of a 1-bit frame is １ ／ of the size of a 1-byte frame.

Next, input the source file shown in FIG.
When the structure member table shown in FIG. 7, the size conversion table shown in FIG. 8, and the member assignment configuration diagram of the structure shown in FIG. 9 are created, and the member assignment configuration diagram of the structure shown in FIG. 10 is created. The operation will be described.

First, the source file shown in FIG. 6 has a tag name TAGA, a tag name TAGB, a typedef name ABC
And typedef name XXX.

The member information acquisition process 102 sets the tag name, member name, and attribute items of the structure member table (FIG. 7), and sets the attribute items of the size conversion table (FIG. 8).
Next, in the typedef information acquisition processing 103, the attributes of the size conversion table (FIG. 8) and the items of the typedef name are set.

The size of the typedef name ABC is obtained by the typedef size calculation processing 104. type
The edef name XXX is not set because the size of the tag name TAGA has not been calculated at this stage.

In the member size calculation processing 105, items of size, allocation size, and bit length of the structure member table (FIG. 7) are set.

The offset calculation processing 106 sets the bit offset and offset items of the structure member table (FIG. 7), calculates the size of the structure, and sets the attributes of the size conversion table (FIG. 8) as “structTAG” and “struct”.
Set the items of TAGB size and allocation size.

The structure member assignment information file creation process 107 creates a structure member assignment information file (FIG. 9). The structure member assignment configuration diagram (FIG. 10) is created by the structure member assignment information configuration diagram creation process 109.

In the above embodiment, an example in which the present invention is implemented as software has been described. However, the embodiment of the present invention is not limited to this, and all the processes of the present embodiment are executed. The present invention may be implemented as a single automatic generation device. Further, an embodiment is also possible in which the above-described automatic generation program according to the present embodiment is recorded on a recording medium and distributed, and each user reads out and executes the program using a personal computer or the like.

[0033]

As described above, according to the present invention, only by inputting a source file, a structure member allocation diagram of a structure defined in the file is automatically generated. This has the effect of reducing the load required for document creation in language program development.

[Brief description of the drawings]

FIG. 1 is a block diagram of an automatic generation device, an automatic generation method, and an automatic generation program of a C language structure member allocation configuration diagram according to an embodiment of the present invention.

FIG. 2 is a diagram exemplifying a structure member table handled in the embodiment;

FIG. 3 is a diagram exemplifying a size conversion table handled in the embodiment.

FIG. 4 is a diagram exemplifying a structure member allocation information file created in the embodiment;

FIG. 5 is a diagram exemplifying a structure member allocation configuration diagram created in the embodiment;

FIG. 6 is a diagram showing a source file handled in an operation example of the embodiment.

FIG. 7 is a diagram showing a structure member table handled in an operation example of the embodiment.

FIG. 8 is a diagram showing a size conversion table handled in an operation example of the embodiment.

FIG. 9 is a diagram showing a structure member allocation information file handled in an operation example of the embodiment.

FIG. 10 is a diagram showing a structure member allocation configuration diagram output in an operation example of the embodiment.

[Explanation of symbols]

101 Source File 111 Structure Member Table 112 Size Conversion Table 102 Member Information Acquisition Processing 103 Typedef Information Acquisition Processing 104 Typedef Size Calculation Processing 105 Member Size Calculation Processing 106 Offset Calculation Processing 108 Structure Member Allocation Information File 107 Structure Member Allocation Information File Creation process 109 Structure member assignment configuration diagram Creation process 110 Structure member assignment configuration diagram

Claims (3)

[Claims] 1. An automatic generation device for automatically generating a structure member allocation configuration diagram from a source file including a structure definition in C language, comprising: means for reading a member name and an attribute of a structure from the source file; Means for specifying the size of the member from the attribute of the member read by the member information obtaining means; means for obtaining the offset of the member in the structure from the size of the member; means for obtaining the size of the structure from the members constituting the structure And a means for creating a structure member allocation configuration diagram based on the names, sizes, and offsets of the structure member names, and a C language structure member allocation configuration diagram automatic generation apparatus. 2. An automatic generation method for automatically generating a structure member assignment configuration diagram from a source file including a C language structure definition, comprising: a process of reading a member name and an attribute of a structure from the source file; A process of specifying the size of the member from the attribute of the member read by the member information obtaining means; a process of obtaining the offset of the member in the structure from the size of the member; and a process of obtaining the size of the structure from the members constituting the structure And a process for creating a structure assignment diagram of the structure from the names, sizes, and offsets of the members of the structure. 3. A recording medium recording an automatic generation program for automatically generating a structure member assignment configuration diagram from a source file including a structure definition of a C language, wherein the automatic generation program includes a structure from the source file. A process of reading the member name and attribute of the member, a process of specifying the size of the member from the attribute of the member read by the member information acquisition unit, a process of obtaining the offset of the member in the structure from the size of the member, C language structure member assignment, characterized by comprising a process of obtaining the size of a structure from constituent members and a process of creating a structure member assignment configuration diagram from the names, sizes, and offsets of the members of the structure. A recording medium on which an automatic generation program of a configuration diagram is recorded.