JPS6182242A - Fortran translating system - Google Patents

Abstract

PURPOSE:To execute easily an input/output instruction of structure body data by using a pre-compiler for correcting source in which a structure body data defining sentence and an open sentence which has designated a presentation to an access designator, to a standard language. CONSTITUTION:One sentence is inputted from an input source file 6, a sort of the sentence is executed by a sorting part 4, and it is delivered to a 'control part of processing' 4 by adding the sort. When the sentence is a PARTITION sentence, the 'control pat of processing' 4 delivers it to a 'processing part of PARTITION sentence' 7. In this part, the overall length of a data designated by the PARTITION sentence is derived, and also it is converted to a NAMELIST sentence and returned to the 'control part of processing' 4. When the sentence is the first execution sentence, it is delivered to a 'processing part of the first execution sentence' 8, and in this part, a CALL JZLPSX sen tence is inserted immediately before the execution sentence, and the length of said whole data is appropriated as its argument. As for an input/output sentence READ, a CALL JZLPSX is inserted immediately before said sentence in a processing part, and an identification number of a data set is appropriated as its argument.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention adds a PARTITTON statement that defines a structure as an extended language specification of Fortran, and
The present invention relates to a Fortran translation method in which a Fortran source in which a 1ON statement is written is compiled and converted into a Fortran source with standard language specifications, and the Fortran source with standard language specifications is compiled and converted into an executable program.

[Prior art and problems]

Structure data is a collection of different data items in the order in which they are formed, but in conventional Fortran, it is not possible to perform human output in units of structure data. Break down the body data into elements,
Forma for each element.

It was necessary to write command statements to specify input and output.

[Purpose of the invention]

The present invention is based on the above considerations, and aims to enable Fortran to handle structure data.

[Means to achieve the purpose]

Therefore, the four-one hellan translation method of the present invention is
Is there a PI in the PARTITIfIN statement that defines the structure data and the access indicator? O with R5ENTATION specification
The feature is that the Fortran source in which the PI':N statement is entered is precompiled and converted into the Fortran source of the standard language specification, and the Fortran source of the standard language specification is compiled and converted into an executable program. That is.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a diagram for explaining the present invention in detail. 1st
Figure (A) is a diagram showing an example of structure data. In FIG. 1(a), A indicates an integer type 4-hide area, B a real number type 4-hide area, and C a character type 16-byte area. The 1st E (b) is 0P with PRESENTATION specified in the PARTITTON statement and access indicator.
FIG. 2 is a diagram showing a Fortran source having an EN statement and a Fortran source with standard language specifications obtained by precompiling the Fortran source. In the present invention, the following specifications are added in order to handle structure data.

■PARTTTION statement■ PRESENTA in the access indicator of the 0PEN statement
Define the structure data in the TrONPARTITION statement and use PRESENTAT as the access indicator in the 0PEN statement.
By specifying TON, the data sensor [identification number that handles the structure] is determined. The left side of Figure 1 (b)
1~ In the run source, the PARTITION statement specifies that the structure name Aii is D and that the structure element is A.
, B and C. Also, l? H.A.
Sentence 11 indicates that the input device number is 6 and indicates that a structure should be read.

The Fortran source on the left side of Figure 1 (b) is precompiled and converted to the standard language specification Fortran source (on the right side), and the Fortran source of the standard IL language specification is compiled or compiled into °ζ executable format. converted into a program.

FIG. 2 is a diagram showing processing at the time of precompilation. Second
In the figure, 1 is a control section, 2 is an input section for one sentence, 3 is a classification section for one sentence, 4 is a control section for processing one sentence, 5 is an output section for one sentence, 6 is an input source file, and 7 is a one-sentence processing control section. is PARTITION
The statement processing section 8 is a first executable statement processing section, 9 is a name list input/output statement processing section, and 10 is an output source file. The control unit 1 controls the entire precompiler. The one-sentence input section 2 inputs one sentence from the input source file and inputs it into the one-sentence classification section 3.
give it to The one-sentence classification unit 3 classifies sentences and passes the sentences to which the classification has been added to the one-sentence processing control unit 4. If the statement is a PARTITTON statement, the control unit 4 for processing one sentence passes it to the PARTITTON statement processing unit 7, and if the statement is the first executable statement, passes it to the first executable statement processing unit 8,
If the statement is a name list input/output statement, it is passed to the name list input/output statement processing section 9, and when the processing result is returned, it is passed to the one sentence output section 5. The one-sentence output unit 5 outputs the received sentence to the output source file 10.

The processing unit 7 of the PARTITION statement is the PARTITIO
The entire length of the data specified by the N statement is found, and the PARTTTION statement is converted into NAME1 and IST statements. The processing unit 8 of the first executable statement is PARTITI
Add the length of the data determined by the ON statement to C just before the first executable statement.
Output as an argument for ALL JZI and PSX. however,
FAI? TITI (If there are multiple IN statements, the largest one among them is adopted. The name list input/output statement processing unit 9 uses the same name as the name specified in the PART, lTloN statement, and the list name. For the name list input/output that has, the data set identification number of the name list input/output statement is output as an argument of Ne1, CALI1, IZ1, and FSX immediately before the list.

In Figure 1 (b), the Fortran source on the left uses statements from the extended language specification, but if this is precompiled as shown in Figure 2, it will look like the one shown on the right side of Figure 1 (b). You can obtain a formal language source with a standard language specification. Note that the input/output statement of the name list refers to IIEArl (6, FMT-D) in the example of FIG. 1(b).

The standard language specification Fortran source obtained as a result of precompilation is compiled and converted into an executable program. FIG. 3 is a diagram showing processing at the time of execution by the executable version of ProGuerra.

In FIG. 3, 11 is a control unit, 12 is a structure data input/output statement determination unit, I3 is a buffer securing unit, 14 is a data set identification number registration unit for structure data, and 1
Reference numeral 5 indicates a structure data input/output section, 16 a structure data output section, and 17 a structure data file. The buffer securing unit 13 performs CALL JZLPS
This is the part that executes X(1, The data set identification number registration unit 14 for the structure data registers PRESIENTATION with an access indicator.
This is the part that executes the 0PEN statement specified by
Register the data set identification number of the statement as the data center number for input/output of structure data. The determination unit 12 of the structure data input/output unit, CAI, L JZLPSX (
2, Prepare human output of physical data. The structure data input unit 15 is a unit that executes a READ statement that instructs input of structure data, and starts processing in response to an instruction from the control unit 11 via the determination unit 12, and inputs data from the structure data file 17. The structure data code is input to the buffer, and the contents of the buffer are output to the variables in the sequence specified by the PARTITION statement based on the name list name. The structure data output unit 16 is a part that executes a WIIITE statement that instructs the output of structure data, and starts processing in response to an instruction from the control unit 11 via the determination unit 12, and performs processing based on the name list name. -1- The sequence of variables specified in the PARTITION statement is output to the HA sofa, and the contents of the HA sofa are stored in the structure data file 17 as one record of the structure I/here.

〔Effect of the invention〕

As is clear from the following explanation, according to the present invention, input/output instructions for structure data on a Fortran source can be easily performed.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an overview of the present invention, FIG. 2 is a diagram showing processing during precompilation, and FIG. 3 is a diagram showing processing during execution. 1... Control section, 2... 1 sentence input section, 3... 1 sentence classification section, 4... 1 sentence processing control section, 5. How many sentences output section, 6. ...Input source file, 7...PA
RTITION statement processing unit, 8... First executable statement processing unit, 9... Name list input/output statement processing unit, 10
...Output source file, 11...Control unit, 12
... Structure data input/output statement determination section, 13... Buffer reservation section, 14... Data set identification number registration section for structure data, 15... Structure data input section, 16...Structure data output part, 17...
File for structure data.

Claims (1)

[Claims] PARTITION statement that defines structure data and an OPE with PRESENTATION specified in the access specifier
Precompile the Fortran source with N statements and convert it into a Fortran source with standard language specifications.
A Fortran translation method characterized by compiling Fortran source of the standard language specifications and converting it into an executable program.