JPH06103079A - Compile system - Google Patents

Abstract

PURPOSE:To enable processing without limiting the number of processing lines in the input source file of a compiler in a system provided with a little hardware resources such as memory capacity in the case of performing compile. CONSTITUTION:The compiler is provided with a division part 103 for the source file and a data decleration/definition information holding part 105 for the decleration part of data/compile information of the definition part, and at the time of compile, the input source file is divided into the decleration part/ definition part of data and function definition. In the case of the decleration part/definition part of data, the compile information is held and in the case of function definition, the input source file is compiled for each of function definition by referring to the compile information of the decleration part/ definition part of data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method of a language processing program.

[0002]

2. Description of the Related Art In developing a program for a microcomputer, a developer creates a source program, inputs the source program into a language processing program (compiler, etc.), and translates it into a machine language instruction string for the microcomputer.
It is placed in the memory of the microcomputer and executed.

A source program written in a high-level language is translated by a compiler and converted into a target machine language string.

A conventional compilation processing method will be described with reference to FIG. The developer inputs the source program 201 to the compiler 202, the syntax analysis unit 203 creates the intermediate code information 204 of the machine language instruction sequence, and the code generation unit 205.
In, the intermediate code information is converted into a machine language instruction sequence,
The output file 205 is created.

Generally, there is a limit to the number of lines of a source program that a compiler can process. There is a limit due to the amount of memory that can be used by the compiler of the computer on which the compiler operates and the amount of disk device that is used as a work area.

For example, a compiler operating on the MS-DOS system has a small memory capacity. Since the compiler creates management information for compilation such as symbol information and intermediate code information of the entire source file created by the compiler during compilation, the number of lines of the source program to be compiled is limited.

In some compiler systems, when the memory becomes insufficient, intermediate code information is created in a temporary file and then compiled. However, the larger the number of lines in the source file, the larger the created temporary file. Accessing a large temporary file takes a lot of processing time, and the processing time of compilation increases in proportion to the number of source lines.

[0008]

When compiling on a computer system with a small amount of usable memory, there is a problem that a source program exceeding the limit number of lines cannot be compiled.

Also, during the compilation,
There was a problem that the compilation was interrupted when the memory became insufficient, and all the compilation information that had been compiled up to that point was wasted.

Further, in the system for creating the intermediate code information in the temporary file, there is a drawback that the compile time becomes long for a large source file.

An object of the present invention is to provide a compiling method capable of processing the number of processing lines of the input source file of the compiler without limitation.

[0012]

In order to achieve the above object, a compiling method according to the present invention has a decomposing section, an information holding section, and a syntax analyzing section, and includes a data declaring section, a data definition and a function procedure. Is a processing method of a compiler that analyzes an input source program composed of a collection of data, converts it into intermediate information, and converts the analyzed intermediate information into machine language instructions. The decomposition unit is a data declaration in the source program. Part, data definition part, and function procedure, the source program is divided into data declaration part, data definition part, and function procedure unit. The information holding part holds compilation information of the data declaration part and data definition part. The syntax analysis unit refers to the declaration information and definition information of the data from the information storage unit and performs the syntax analysis.

In the compiling method, the input source file is divided into data declaration / definition and function definition, and the output source information is divided into an intermediate file or a memory for compiling processing.

[0014]

[Function] The compiler has a source file division part and a data declaration part / definition part compilation information holding part, and at the time of compilation, the input source file is divided into a data declaration part / definition part and a function definition. In the case of the / definition section, the compilation information is held, and in the case of the function definition, the compilation information of the declaration section / definition section of the data is referred to, and compilation is performed for each function definition.

[0015]

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

(Embodiment 1) FIG. 1 is a block diagram showing Embodiment 1 of the present invention.

Referring to FIG. 1, a compiler 1 according to the present invention.
02 inputs the input source file 101, and the dividing unit 10
In step 3, the source file consisting of the data declaration part, the data definition and the set of function procedures is analyzed and divided into the data declaration part, the data definition and the function procedure.

The divided source file information is analyzed by the syntax analysis unit 104, converted into intermediate code information 106, and held in the memory.

The syntax-analyzed data declaration and definition information are held in the data declaration / definition information holding unit 105, which is referred to when the function portion is parsed and used when converting the function portion into intermediate code information.

The compiling process of this method will be described with reference to the process flowchart of FIG. Termination determination means 301
Now, determine the end of the input source file. The following processing is performed while there is read information from the input source file.

The source file dividing means 302 divides the input source file into a data declaration / definition portion and a function definition portion at the source level.

FIG. 5 shows an example of a source program in C language. Reference numeral 501 is a data declaration part, 502 is a data definition part, and 503 and 504 are function definition parts.

The following processing is performed in units divided as described above. In the data declaration / definition part determination means 303, the data declaration / definition part is judged, and if it is the data declaration / definition part, data declaration / definition processing is performed. Data declaration section 501 in the source file of FIG.
In the case of the data definition unit 502, this processing is performed.

The data declaration / definition portion analysis means 304 performs syntax analysis of the data declaration / definition portion and converts it into intermediate code information. Data declaration of converted intermediate code information /
The definition part intermediate code information storage means 305 stores the data declaration and definition information holding part 105 in FIG. Further, the intermediate code information of the converted part of the converted data is converted into machine language level data definition data by the definition data conversion means 306. The converted machine language level data definition information is output to the output file 108 by the file output means 307.
Then, the process is returned to the end determination means 30 and the processing is continued.

In the judgment by the data declaration / definition part judging means 303, if the divided source file is the function definition, the function definition processing is performed. This processing is performed in the case of the function definition sections 503 and 504 in the source file of FIG.

In the case of the divided function definition units 503 and 504, the syntax analysis process of the function definition portion is performed by the function definition analysis unit 3.
At 08, it is converted into intermediate code information.

When performing syntax analysis of the function definition portion, the syntax is analyzed by referring to the data declaration and definition information and definition information of the data from the definition information holding unit 105.

Data information that is originally declared and defined in the same source file is used as the data declaration and definition information holding unit 1.
By referring to information from 05, it becomes possible to compile by dividing by function unit.

The intermediate code information of the converted function definition portion is converted into machine language instruction string data by the machine language instruction string converting means 309. The file output means 310 outputs the converted machine language instruction string information of the function definition portion to the output file 108.

Next, the processing is continued by returning to the end judging means 301.

As described above, according to the flow chart of FIG. 3, the above processing is executed until the input source file is completed.
Compile.

(Second Embodiment) The configuration of the compiling processing system of the second embodiment is the same as that of the first embodiment shown in FIG. With respect to the division unit, the syntax analysis unit, and the code generation unit in FIG. 1, the same processing as in the first embodiment is performed. This embodiment differs from the first embodiment in the method of dividing the source file.

In the second embodiment, the compiling process of this method will be described with reference to the flowchart of FIG. The end determination unit 401 determines the end of the input source file. While the source file still exists, the source file is divided.

The source file dividing means 402 divides the input source file into a data declaration / definition portion and a function definition portion at the source level.

FIG. 5 shows an example of a source program in C language. Reference numeral 501 is a data declaration part, 502 is a data definition part, and 503 and 504 are function definition parts.

The following processing is performed in units divided as described above. The intermediate file output means 403 outputs the source information in memory or in an intermediate file for each data declaration / definition portion and function definition portion. In the example of FIG. 5, the data declaration unit 501 and the definition unit 502 are stored in one memory or are stored in an intermediate file as function definition units 503 and 504.
The source information is output for each function in memory or divided into intermediate files.

When the division of the input source file is completed, the following processing is performed. In the intermediate file end determination means 404, the input source file is divided into data declaration / definition and function definition in the output memory or the source information of the intermediate file is input, and the following processing is performed until the source information exists. .

In the data declaration / definition part determination means 405, the data declaration / definition part is judged, and if it is the data declaration / definition part, data declaration / definition processing is performed. Data declaration section 501 in the source file of FIG.
This process is performed for the intermediate file of the data definition unit 502.

The data declaration / definition part is analyzed by the data declaration / definition part analysis means 406 to convert it into intermediate code information. The converted intermediate code information is stored in the data declaration / definition information holding unit 105 of FIG. 1 by the data declaration / definition unit intermediate code information storage unit 407. Further, the intermediate code information of the converted portion of the converted data is converted into machine language level data definition data by the definition data conversion means 408.

The file output means 409 outputs the converted machine language level data definition information to the output file 108.

Next, the processing is returned to the intermediate file input means 404 to continue the processing. In the determination of the data declaration / definition portion by the data declaration / definition portion determination means 405, if the divided source files are function definitions, the function definition processing is performed. Function definition part 50 in the source file of FIG.
This process is performed for intermediate files 3 and 504.

In the case of the divided function definitions 503 and 504,
The syntax analysis processing of the function definition part is performed by the function definition part analysis means 41.
The value is set to 0 and converted into intermediate code information.

When parsing the function definition portion, the syntax is analyzed by referring to the data declaration and definition information of the data from the definition information holding unit 105 and the definition information.

Data information that is originally declared and defined in the same source file is data declaration and definition information holding unit 1.
By referring to information from 05, it becomes possible to compile by dividing by function unit.

The machine language instruction string converting means 411 converts the converted intermediate code information of the function definition portion into machine language instruction string data. The machine language instruction sequence information of the converted function definition portion is output to the output file 108 by the file output means 412. Then, the process is returned to the intermediate file input means 404 to continue the processing.

As described above, according to the flow chart of FIG. 4, the above-mentioned processing is divided into the input source file into data declaration / definition and function definition, and the output source information is divided into the memory or an intermediate file to be compiled. Compile until the intermediate file to compile exists.

[0047]

As described above, according to the present invention, it is possible to compile a source program whose number of lines exceeds the limit when compiling on a computer system having a small usable memory. In addition, during the compilation, if the memory becomes insufficient, the compilation will not be interrupted and the development time can be shortened.

Further, compared to a compiler system that creates intermediate code information in a temporary file, the source file is divided and the compilation processing is performed in a memory or in a small temporary file, so the compilation time can be shortened.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing a compiler processing method of the present invention.

FIG. 2 is a system configuration diagram showing a conventional compiler processing method.

FIG. 3 is a flowchart showing processing of a compiler processing method according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing processing of a compiler processing method according to the second embodiment of the present invention.

FIG. 5 is a diagram showing an example of an input source file.

[Explanation of symbols]

 101 Input Source File 102 Compiler 103 File Dividing Unit 104 Syntactic Analysis Unit 105 Data Declaration and Definition Information Holding Unit 106 Intermediate Code 107 Code Generation Unit 108 Output File 201 Input Source File 202 Conventional Method Compiler 203 Syntax Analysis Unit 204 Intermediate Code 205 Code Generation Part 206 Output file 301 End judgment means 302 File division means 303 Data declaration / definition part judgment means 304 Data declaration / definition part analysis means 305 Data declaration / definition part intermediate code information storage means 306 Definition data conversion means 307 File output means 308 Function Definition part analysis means 309 Machine language instruction sequence conversion means 310 File output means 401 Source file end determination means 402 File division means 403 Intermediate file output means 404 Intermediate file end determination means 405 Data declaration / definition part determination means 406 Data declaration / definition part analysis means 407 Data declaration / definition part intermediate code information storage means 408 Definition data conversion means 409 File output means 410 Function definition part analysis means 411 Machine language Command sequence conversion means 412 File output means 501 Data declaration part 502 Data definition part 503 Function definition part 504 Function definition part

Claims (2)

[Claims] 1. An input source program having a decomposition unit, an information storage unit, and a syntax analysis unit, which is composed of a data declaration unit, a data definition, and a collection of function procedures, is analyzed, and converted into intermediate information. It is a processing method of a compiler that converts the analyzed intermediate information into machine language instructions, and the decomposition unit is a data declaration unit and a data definition unit from a collection of data declaration unit and data definition unit and function procedure in the source program. The source program is divided into function procedure units, the information holding unit holds the compilation information of the data declaration unit and the data definition unit, and the syntax analysis unit uses the data declaration information and definition from the information holding unit. A compilation method characterized by performing parsing with reference to information. 2. The compiling method according to claim 1, wherein the input source file is divided into a data declaration / definition and a function definition, and the output source information is divided into memory or an intermediate file for compiling processing. Compile method characterized by performing.