JPH04149636A - Cross-reference processing system - Google Patents

Abstract

PURPOSE:To save the labor for analysis of a program by adding a source program file name which defines an external label and a row No. as the comments after a coding process which refers to the external label contained in a source program. CONSTITUTION:A cross-reference information conversion means 1 retrieve a label equal to an external label out of a cross-reference information file 14 and produces a cross-reference output information file 15 based on the defining information on the external label. A cross-reference information output means 2 reads the file 15 to read a source program file equal to a source program file name for each row. If the read row is coincident with the row No. of the cross-reference output information, the source program file name and the row No. stored in the file 15 are outputted to a cross-reference information storing source file 16 as the comments. Thus it is possible to know the definition of the external label just by reference to a source program and this program is analyzed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a cross-reference processing method, and in particular, based on cross-reference information, the external name is added to the position where the external name is referenced in the source program. embeds the source program file name and line number where the mark is defined,
Regarding cross-reference processing method.

[Conventional technology]

Conventionally, cross-reference information has been output to a cross-reference information file.

[Problem to be solved by the invention]

In the conventional cross-reference processing method described above, the cross-reference information and the source program file are output separately, so when analyzing a program, if there is a reference to an external name in the source program file, the external name The definition of the external name mark is checked, and as the size of the source program file becomes larger, the number of external name mark definitions and references increases. There was a problem in that it was necessary to search for the mark, which took a lot of time and effort.

An object of the present invention is to input the source program file name and line number in which the external name is defined to the reference of the external name in the source program file without referring to the cross-reference information file. The object of the present invention is to provide a cross-reference processing method that allows the user to know the definition of an external name and analyze the source program just by looking at it.

[Means to solve the problem]

The cross-reference processing method of the first invention inputs a source program file, and identifies an external name in the source program, a line number in the source program where the external name is defined, and a referenced line number. In cross-reference processing that generates cross-reference information that retains information and outputs it to a cross-reference information file,
(A) Read the generated cross-reference information file, search for each source program file name and in line number order, and if a reference to an external name mark is detected, the source program in which the external name mark is defined (B) a cross-reference information conversion means for searching a cross-reference information file for the line number in the cross-reference information file and outputting the reference file name, reference line number, external name mark, definition file name, and definition line number to a cross-reference output information file; to the cross reference information conversion means.

The source program file name is read from the cross-reference output information I9 file generated, and the source program file corresponding to the source program file name is read line by line, and the line 1 held in the cross-reference output information is read. If the line does not match the number, output the read/exit line as is to the file, and if it matches the line number, extract the definition file name and line number in the definition file from the cross reference output t1 report file. A cross-reference information output stage that generates a source program file in which cross-reference information is embedded as a comment by reading and adding it as a comment after the read line and outputting it to the file. has been done.

In addition, the cross-reference processing power formula of the second invention inputs a source program file, and identifies an external name in the source program, a line number in the source program in which the external name is defined, and the referenced In a cross-reference process of generating cross-reference information holding line number information and outputting it to a cross-reference information file, the cross-reference information conversion means includes a cross-reference information conversion means and a cross-reference information output means, and the cross-reference information conversion means generates The cross-reference information file that has been read is read, and the search is performed for each source program file name and in the order of line numbers. When a reference to an external name mark is detected, the line number in the source program where the external name mark is defined is searched. is searched from the cross-reference information file, and outputs the reference file name, reference line number, external name, definition file name, and definition line number to the cross-reference output information file, and the cross-reference information output means searches for the cross-reference output information file. Read the source program file name from the information file, read the source program file corresponding to the source program file name line by line, and if the line does not match the line number held in the cross reference output information, read the read line. Output it as is to a file, and if it matches the line number, read the definition file name and line number in the definition file from the cross-reference output information file, add it as a comment after the read line, and save it to the file. is configured to output to .

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the present invention.

The cross-reference processing method shown in FIG. 1 includes a cross-reference processing means 11, a compiler 12, a source program file 13, and a cross-reference information file 1.
4, a cross-reference output information file 15, and a cross-reference information storage source program file 16.

Further, the cross-reference processing means 11 includes a cross-reference information generation means 17, a cross-reference processing variable p-T[1, and a cross-reference information output means 2.

Further, the compiler 2 includes a syntax analysis means 18.

Next, the operation will be explained.

FIGS. 2 and 3 are diagrams showing an example of a source program written in C language.

In FIG. 1, cross reference information generating means 17
reads the source program file 13 and generates the cross-reference information file 14. For example, the second
The cross-reference information shown in FIG. 6 is generated for the source program written in the C language shown in FIGS.

The reference information conversion means 1 reads the cross-reference information file 14, and when a reference to an external name mark is detected, searches the cross-reference information file 14 for the same external name mark as the external name mark. , detect the definition information of that external name mark. A cross-reference input/output information file 15 is generated based on the detected definition information.

In the case of Figure 6, from ■, the external name reference is Ffunc2.
J, and from (2), the definition of rfune2J is searched from the cross-reference information, and the information that the source program defining rfune2J is "b, c" and the line number is "3" is obtained.

From the obtained information and ■, ■ shown in FIG. 7 is generated as cross-reference output information.

Similarly, in Figure 6, the external name a of ■ is also a reference, and ■
The source program name r3. which defines the external name a.
cJ, obtained the information that line number "1", and the obtained information and ■
Accordingly, ■ shown in FIG. 7 is generated as cross-reference output information.

The cross-reference information output means 2 reads the generated cross-reference output information file 15, and reads source program files having the same name as the source program file line by line. If the read line does not match the line number of the cross-reference output information, the read line is output as is to the cross-reference information storage source program file 16. If it matches the line number, the read line is output to the cross-reference information storage source program file 16, and after the output line, the source program file name and line number stored in the cross-reference specific force information file 15 are displayed. is output as a comment to the cross-reference information storage source file 16.

The above process is performed for each source program file stored in the cross-reference output information file 15, and the cross-reference information storage source program file 16 is
generate.

In the case of FIG. 7, the source program file "a, C" is read line by line. The reference to the external name rfune2J is on the 7th line, so until the read line reaches the 7th line,
The read line is output as is to the cross-reference information storage source program file 16. When the read line reaches the 7th line, the read line is output to the cross-reference information storage source program file 16, and then the source program file names rb and cJ where ri'une2J is defined and line number "3" are output. is output as a comment. That is, as shown in FIG. 4, r/*b,
c 3*/J is output to the cross reference information storage source program file 16. Looking at the cross-reference output information, there is no reference to rfune2J after the 7th line of the source program files ra and eJ, so
The lines after the 8th line are output as they are to the cross-reference information storage source program file 16. The cross-reference information storage source program file for the source programs ra and -eJ generated in this way is shown in FIG.

Similarly, FIG. 5 shows a cross-reference storage source program file for the source program files rb and cl.

〔Effect of the invention〕

As explained above, in the present invention, the source program file name and line number defining the external name are embedded as comments after the coding that refers to the external name in the source program. Therefore, when analyzing a program, the definition of the external name mark can be found without referring to the cross-reference information file from the reference position of the external name mark, and the effort of program analysis can be saved.

[Brief explanation of drawings]

Figure 1 is a block diagram of an embodiment of the present invention, Figures 2 and 3 are diagrams each showing an example of a source program written in C language, and Figure 4 is written in C language as shown in Figure 2. 5 is a diagram showing a cross-reference information storage source program for the source program written in C language, FIG. 5 is a diagram showing a cross-reference information storage source program for the source program written in C language shown in FIG. 3, and FIG. and third
Figure 7 shows the cross-reference information created based on the cross-reference information file output in Figure 6. FIG. 1...Cross reference information conversion means, 2.
...Cross reference information output means, 11...
...Cross reference processing means, 12...
・Compiler, 13... Source program file, 14... Cross reference information file, 15... Cross reference output information file, 16... Cross reference information storage Source program file, 17...Cross reference information generation means, 18... Syntax analysis means. Agent: Susumu Uchihara, patent attorney. death. Sphere 21゜ref

Claims (1)

[Claims] 1. Input a source program file and retain information on external name marks in the source program, line numbers in the source program where the external name marks are defined, and referenced line numbers. (A) Read the generated cross-reference information file, search for each source program file name and in line number order, and When a reference to a target is detected, the line number in the source program where the external name is defined is searched from the cross-reference information file, and the reference file name, reference line number, external name, definition file name, definition are searched. cross-reference information converting means for outputting line numbers to a cross-reference output information file; (B) reading the source program file name from the cross-reference output information file generated by the cross-reference information converting means; Reads the corresponding source program file line by line, and if the line does not match the line number held in the cross-reference output information, outputs the read line as is to the file, and if it matches the line number,
The cross-reference information is embedded as a comment by reading the definition file name and line number in the definition file from the cross-reference output information file, adding it as a comment after the read line, and outputting it to the file. A cross-reference processing method comprising: cross-reference information output means for generating a source program file. 2. inputting a source program file, generating cross-reference information that holds information on an external name in the source program, a line number in the source program where the external name is defined, and a referenced line number; In cross-reference processing for outputting to a cross-reference information file, the cross-reference information converting means reads the generated cross-reference information file and converts it into a source program file name. When a reference to an external name mark is detected, the line number in the source program where the external name mark is defined is searched from the cross-reference information file, and the reference file name, reference The line number, external name, definition file name, and definition line number are output to a cross-reference output information file, and the cross-reference information output means reads the source program file name from the cross-reference output information file, and outputs the source program file name to the cross-reference output information file. Read the source program file corresponding to the file name line by line, and if the line does not match the line number held in the cross-reference output information, output the read line as is to the file, and if it matches the line number , a cross-reference processing method characterized in that a definition file name and a line number in the definition file are read from the cross-reference output information file, and added as a comment after the read line and output to the file.