JPH02291024A - Comment sentence starting character selection type object program preparing device - Google Patents

Abstract

PURPOSE:To save labor by comparing a character read from a table with a leading character in the prescribed row of an inputted source program, deciding the row as a comment sentence when the both characters are coincident, deciding the row as an instruction sentence when the both characters are dissident, converting the program into an object program and outputting the program. CONSTITUTION:In a comparison part 30, the character read from a table 20 is compared with the leading character in the prescribed row of the inputted source program. When the both characters are coincident, the row is decided as the comment sentence and when the both characters are dissident, the row is decided as the instruction sentence. Then, the program is converted into the object program and outputted. Thus, since only the character, which is designated in advance before the source program is inputted, is defined as a comment sentence starting character, the different object program can be prepared in one source program by selectively using the comment sentence starting character in the source program.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a compiler for creating an object program from a source program including comment statements, and provides an object program creation device that allows the user to select the starting character of the comment statement. In a software development system that has a compiler that inputs a source program, converts it into an object program, and outputs it, the compiler inputs and stores comment statement start characters to make any line of the source program a comment statement. The characters read from the table are compared with the first character of a predetermined line of the input source program. If the two match, that line is determined to be a comment statement, and if they do not match, the line is determined to be an instruction statement. A comparison unit is provided to perform the judgment, convert it into an object program, and output it, and is configured to compare all lines of the source program J.

[Industrial application field]

The present invention relates to an improvement of a compiler for creating an object 1 program from a source program including comment 1 statements.

At this time, there is a need for an object 1 program creation device that allows the user to select the starting character of a comment sentence.

[Conventional technology]

FIG. 5 is a diagram illustrating a conventional method of using specific characters.

FIG. 6 is a flowchart illustrating a conventional comment sentence determination method.

When developing software, it can be made easier to understand by including a comment in the source program to explain the program. Also, Soft 1.
Instructions that you want to keep as displayed in the source program during software development, but do not want to be included in the object program during compilation (conversion (translation) from the source program to the object program), Comment 1 in the first column of each line of the source program
~By adding the start-of-sentence character, it is necessary to compile the instruction with a comment 1 and a sentence.

For example, one gram of sources is as shown in Fig. 5(a), and a specific character ゛* is used as the starting character of one sentence of comment I.
The case where “゜” is set will be explained.

Line ■ of the source program shown in (a) of Figure (I)
Since "*゜' is numbered" in the ■ and ■ lines, the source program as shown in (b) of the same figure (■) excluding the ■ to ■ lines and the ■ line is Compiled and converted to machine language.

In addition, in the above source program, when it is desired to remove line ① and insert line ①, a source program as shown in (C) of FIG.

Next, the method for determining the above-mentioned comment text will be explained with reference to FIG.

In FIG. 6, when compiling the source program, first read the first character of the statement in the first line and compare it with a specific character (for example, "*").

When the two match, the line is determined to be a comment, and
For the next line of the source program, the first character is read and determined in the same way.

Also, if both parties do not lose, the CPU determines that line as a command statement and converts it into an object program.
(not shown). Then, the next line of the source program is judged in the same way. Do this for every line of the source program.

Comment sentences were judged in this way.

[Problems to be Solved by the Invention] However, in the object/program creation method described above, the user cannot specify the starting character of a comment statement, and it is difficult to execute several command statements in one source program. When you want to create an object 1 program that has two or more combinations of things that are executed and things that are not executed, you have to change the comment 1 and sentence start character in the first column of the instruction statement each time, which is a time-consuming problem. there were.

Another problem was that two source programs had to be prepared, one for development and one for shipping.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an object program creation device that allows a user to select and set a starting character for a comment sentence.

(Means for solving problems) The second problem is solved by the configuration shown in FIG.

That is, in FIG. 1, a compiler 10 inputs a source program, converts it into an object program, and outputs it.
In the software 1/ware development system having the following, reference numeral 20 is a table in which comments 1 to sentence start characters for making any line of a source program a comment are input and stored.

30 compares the characters read from the table with the first character of a predetermined line of the input source program, and if the two match, the line is determined to be a comment statement, and if the two do not match, the line is determined to be an instruction statement. This is a comparison unit that converts the data into an object program and outputs it.

The above 20 and 30 are provided in the compiler IO. The comparison is then configured to be performed on all lines of the source program.

[For production]

In FIG. 1, a comparison unit 30 compares the characters read from the table 20 with the first character of a predetermined line of the input source program. When the two match, the line is determined to be a comment. If the two do not match, the line is determined to be a command statement and is converted into an object program and output.

Since this is not done before inputting the source program, different object programs can be created using one source program by using different comment start characters in the source program.

〔Example〕

FIG. 2 is a diagram illustrating a method for creating an object program according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating a table used in the embodiment.

FIG. 4 is a flowchart illustrating the comment sentence determination method of the embodiment.

The same reference numerals indicate the same objects throughout the figures.

As shown in FIG. 3, the start character of a comment sentence is input and stored in a random access memory (hereinafter referred to as RAM, not shown) as a specified character using an external input device (for example, a keyboard, etc., not shown), and the comment Stored as a sentence start character table. The contents of this table can be rewritten using an external input device.

For example, when converting the source program shown in FIG. 2 into an object program by method (■),
When ゛ and ``1゛'' are set as specified characters, the compiler that selects starting characters for comments treats lines with ``*゛ and ``1゛'' written at the beginning of the source program line as comment statements.As a result. , Object programs shown in ■ are output.

In addition, when converting to an object program using method (■), that is, when setting "*" and "&" as specified characters, the comment statement start character selection type compiler 1
This adds “′＊゜゛ and “ to the beginning of the source program line.
A line containing ``&゛ is regarded as a comment statement. As a result, the object program shown in (3) is output.

Next, the comment sentence determination method will be explained with reference to FIG.

In Figure 4, first select the lines of the source program by 1.
Judgment is made line by line. Next, read the first character of the judgment line. Next, ■ 1 the specified characters set in the table shown in Figure 3.
The data is read out, and inputted and written into, for example, a main storage device (not shown). (2) The CPU reads out the designated character stored in the main memory and compares it with the read character.

(2) As a result of the comparison, if the two match, the line is determined to be a comment, and steps (1) to (4) above are performed for the next line. or,
■'If the two do not match as a result of the comparison, it is determined whether there are any remaining characters that have not been compared yet among the specified characters.

(2) If there are no characters left that have not been compared among the specified characters, the CPU performs processing to translate that line into an object program as a command statement. Then, perform the above ■ to ■゜ for the next line. Also, ■゜If there are still characters that have not been compared among the specified characters, the next specified character is read from the table, inputted into the main memory, and written. Hereafter, perform the operations from ■ to ■゛ above.

In this way, when determining whether a line in question is a comment or an imperative statement for every line in the source program, read the first character of that line and check whether that character is registered as the starting character for comment 1 sentence. is determined, and only if the character is an unregistered character, the process of changing the line to the object 1 program is performed using that line as a command statement.

〔Effect of the invention〕

As explained above, according to the present invention, since the user can select and specify a plurality of specified characters, the software 1
- A plurality of object programs can be arbitrarily created from one source program during software development, and the number of source programs to be maintained during development is reduced.

Also, since you can decide which line to make a comment statement in the same source program by selecting it when creating the object 1 program, you need to modify the source program each time you change the line to make a comment statement. Saves time and effort. Therefore, it greatly contributes to improving the productivity of software development.

Furthermore, in software 1/ware development, it is often necessary to make some modifications between the shipping software 1/ware and the software 1/ware under development, but in this case, the shipping version and the development version are different. can be managed as one source program, thereby increasing the reliability of the product (object program).

[Brief explanation of drawings]

Figure 1 is a diagram showing the principle of the present invention. Figure 2 is a diagram explaining the method for creating an object 1 program in the embodiment of the tree invention. Figure 3 is a diagram explaining the tables used in the embodiment. Figure 4. is a flowchart explaining the comment 1/sentence judgment method of the embodiment, Fig. 5 is a diagram explaining the usage of specific characters in the conventional example, and Fig. 6 is a flowchart explaining the comment sentence judgment method of the conventional example. It is. In the figure, 20 indicates a table, and 30 indicates a comparison section. Doichiichi ＼ ○ ＠ ■ ■ ■ ■ O

Claims (1)

[Claims] In a software development system having a compiler (10) that inputs a source program, converts it into an object program, and outputs the object program, the compiler is provided with a comment for converting any line of the source program into a comment statement. Compare the characters read from the table (20) in which the sentence start character is input and stored with the first character of a predetermined line of the input source program, and if the two match, that line is marked as a comment statement. A comparison unit (30) is provided which determines that the line is an imperative statement, converts it to an object program, and outputs it when the two do not match, and the comparison is performed for all lines of the source program. A comment sentence start character selection type object program creation device characterized by: