JPH0573330A - Syntax analysis processing system - Google Patents

Abstract

PURPOSE:To shorten the time from the correction of a source program to the end of compiling by performing the lexical analysis and the syntax check at the time of editing and outputting the syntax text through the syntax check at the time of editing in the case of the next compiling. CONSTITUTION:An editor 1 calls a source edit means 2 by a starting direction, reads a source cast out from a source library 6, and calls a syntax check means 3 after the end of the correction processing. The syntax check means 3 performs the lexical analysis and the syntax check against the source text, and generates the syntax text by calling the syntax text output means 4 during the process. It repeats the processing until the source program is ended by the output to the syntax text file 7. After the process, it calls up a syntax text setting means 5. The syntax text output information setting means 5 sets syntax text output information by generating the syntax text in the member information of the objective source program in the source library 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a syntax analysis processing method, and more particularly to a syntax analysis processing method for performing syntax analysis necessary for an editor and a compiler of a computer.

[0002]

2. Description of the Related Art In the conventional syntax analysis processing method, a lexical analysis and a syntax check are performed by an editor, and the lexical analysis and the syntax analysis are performed again by the compiler when the source program whose syntax has been checked is compiled.

[0003]

However, in the conventional parsing processing method described above, the lexical analysis and the syntax check are performed by the editor, and the lexical analysis and the syntax analysis are performed again by the compiler when the source program whose syntax has been checked is compiled. There is a waste of doing it, and it has a drawback that it takes a lot of time from the modification of the source program to the end of the compilation.

[0004]

The syntax analysis processing method of the present invention comprises a source edit means for modifying a source program and a syntax check means for analyzing and checking the syntax of the modified source text of the source program. ,
A syntax text output means for generating and outputting the same syntax text as the output result of the syntax analysis of the compiler in the syntax check process, and a syntax for setting the syntax text output information indicating that the syntax text is output in the source library. A text output information setting means is included in the editor, and a source program is input by the source input means by the following compiler, the syntax text output information set by the editor is judged, and the syntax text is output. If not, the lexical analysis means performs lexical analysis, the syntactic analysis means executes syntactic analysis, and if the syntactic text has been output, the syntactic text output means generates and outputs the syntactic text. Enter
It is configured by compiling by a compiling means.

[0005]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the syntax analysis processing system of the present invention. As shown in FIG. 1, the editor 1 includes a source edit means 2, a syntax check means 3, a syntax text output means 4 and a syntax text output information setting means 5, and corrects a source program in a source library 6. Then, the lexical analysis and the syntax check are performed, and after the syntax check, the syntax text used by the compiler 8 is generated and output in the syntax text file 7.

Further, the compiler 8 has a source input means 9
, Syntax text output presence / absence determination 10, syntax text input means 11, lexical analysis means 12, and syntax analysis means 13
And the compile means 15, and the source program to be compiled has already generated and output the syntax text in the editor 1, the lexical analysis and syntax analysis processing of the compiler 8 is not performed. Compile using the syntax text file 7 created in 1.

First, the editor 1 calls the source edit means 2 according to an editor start instruction. The source edit means 2 reads the source text of the source program to be modified from the source library 6 and performs the source program modification processing such as addition, modification and deletion of the source program by the user, and after the completion of the processing, the syntax check means 3 Call. The syntax check unit 3 performs the same lexical analysis and syntax check as the compiler 8 on the source text in the source library 6, and calls the syntax text output unit 4 in the process. The syntax text output means 4 generates syntax text which is an input of the syntax analysis processing in the compiler 8 and outputs it to the syntax text file 7. After that, the processes of the syntax check unit 3 and the syntax text output unit 4 are repeated until the source program in the source program 6 in the source library 6 is completed, and after that, the syntax text output information setting unit 5 is called. The syntax text output information setting means 5 sets the syntax text output information indicating that the syntax text is generated and output to the member (subfile) information of the target source program in the source library 6.

Next, the compiler 8 calls the source input means 9 in accordance with a compilation start instruction. Source input means 9
Reads the corresponding source program and member (subfile) information from the source library 6. And
The syntax text output presence / absence judgment 10 judges the syntax text output information in the read member (subfile) information of the source program, and if the source program outputs the syntax text, the syntax text input. The means 11 is called. The syntax text input means 11 retrieves the syntax text of the source program in the syntax text file 7 created by the editor 1, outputs it to the syntax text storage area 14, and calls the next compilation means 15.

If the result of the determination of the syntax text output information in the member (subfile) information of the read source program by the syntax text output presence / absence determination 10 is that the syntax text is not output, the conventional compile processing is performed. The lexical analysis means 12 and the syntax analysis means 13 generate syntax text, output it to the syntax text storage area 14, and call the next compilation means 15.

[0011]

As described above, the syntax analysis processing method of the present invention does not perform lexical analysis and syntax check at the time of editing a source program, and then performs lexical analysis and syntax analysis again at the time of compilation, rather than editing. Output the syntax text at the time of the syntax check and use the syntax text created by the editor at the next compilation, so that it is not necessary to perform the lexical analysis and the parsing again, and the editor ends the compilation from the modification of the source program. It has the effect of shortening the time until.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a syntax analysis processing system of the present invention.

[Explanation of symbols]

 1 editor 2 source edit means 3 syntax check means 4 syntax text output means 5 syntax text output information setting means 6 source library 7 syntax text file 8 compiler 9 source input means 10 syntax text output presence / absence 11 syntax text input means 12 lexical analysis means 13 syntax analysis means 14 syntax text storage area 15 compilation means

Claims (1)

[Claims] 1. A source edit means for modifying a source program, a syntax check means for analyzing and checking the syntax of the source text after modification of the source program, and an output result of the syntax analysis of a compiler in the process of syntax check. And a syntax text output means for generating and outputting the same syntax text as the above, and a syntax text output information setting means for setting the syntax text output information indicating that the syntax text is output in the source library, With the following compiler, the source program is input by the source input means, the syntax text output information set by the editor is determined, and if the syntax text is not output, the lexical analysis means performs lexical analysis. Then, the syntactic analysis means executes syntactic analysis, and the syntactic text is output. In this case, the syntax text processing means is characterized in that the syntax text input means inputs the syntax text generated and output by the editor and the compiling means compiles the text.