JPH0689183A - Delayed output control system - Google Patents

Abstract

PURPOSE:To eliminate the labor and the time for confirmation, to save a user from the trouble to indicate the destination again, and to shorten the time required for output at the time of concentration of output to one destination by clarifying the destination even in the case that data is vicariously outputted because of a fault of the output destination. CONSTITUTION:Output information including an image number and a destination name is inputted, and image data corresponding to the image number is read in from an image data file 2, and the output destination and the delayed output destination corresponding to the destination name are obtained from an output destination table, and image data is outputted. In this image data transmission system, the delayed output destination held in a data preserving part 11 is obtained to change the output destination and the destination name as the original output destination is held in the data preserving part 11 and is printed together with image data if image data cannot be outputted because of a fault of the device of the original output destination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interpreter processing system for electronic computers.

[0002]

2. Description of the Related Art In the conventional interpreter processing method, as shown in the flow chart of FIG. 2, when a command sentence is input, the vocabulary analyzing means 11 divides the command sentence into vocabulary units and creates a vocabulary list. To generate. Next, the syntactic analysis means 12 parses the vocabulary list and checks the syntax to create parameters required for execution. Instruction executing means 13
Executes the statement according to the parameters. The interpreter processing is realized by repeating the above processing for all the instruction statements.

[0003]

In the conventional interpreter processing method described above, the parsing processing is performed again even when the same statement as the once executed statement is executed, so that the processing time of the entire processing system is long. There is a problem. Especially when the same statement is likely to be repeatedly executed, as in the data access language SQL, the parsing processing that occupies a large proportion of the processing time of the interpreter processing method is repeatedly executed. There is a problem that the time is significantly increased.

[0004]

The interpreter processing method of the present invention requires a vocabulary analysis unit that divides an input sentence into vocabulary units and generates a vocabulary list, and analyzes the vocabulary list to execute the sentence. An interpreter processing method having a parsing means for creating various parameters and an instruction executing means for executing an imperative sentence by the parameter, and an instruction management table for storing a list of vocabulary of the imperative sentence once executed and corresponding parameters, When the vocabulary list generated by the vocabulary analysis means has the same value as the vocabulary list stored in the instruction management table, the corresponding parameter is read out, and the instruction execution means executes the instruction by the parameter. It is constituted by having.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.
In the embodiment shown in FIG. 1, the vocabulary analysis means 11, the syntax analysis means 12,
It is configured to have an instruction execution unit 13, an instruction management table 14, and an instruction management unit 15.

The vocabulary analysis unit 11 reads a command sentence, divides the command sentence into vocabulary units, and generates a vocabulary list. The syntactic analysis unit 12 analyzes the vocabulary list and generates parameters necessary for executing the imperative sentence. The executing means 13 executes the command statement according to the parameters. The instruction management table 14 includes a vocabulary list storage area 141 and a parameter storage area 142. Vocabulary list storage area 14
1 stores a list of vocabularies of executed imperative sentences, parameter storage area 142 stores parameters of executed imperative sentences, and a plurality of sets of vocabulary list storage area 141 and parameter storage area 142 are paired. Exists. Command management means 15
Manages the vocabulary list and parameters stored in the command management table 14.

FIG. 3 is a flow chart of the process of the embodiment shown in FIG. 1. Hereinafter, the flow of the process of the embodiment shown in FIG. 1 will be described with reference to FIG. First, the vocabulary analysis unit 11 reads an imperative sentence to be executed, detects a position which is a delimiter in the syntax rule of the read imperative sentence, and extracts a vocabulary according to the detected delimiter position. A vocabulary list is created by connecting the minimum vocabulary necessary for the syntax rules among the extracted vocabularies (step 101). Next, the command management means 15 sequentially compares the vocabulary list and the vocabulary list generated by the vocabulary analysis means 11 in the vocabulary list storage area 141, and finds the same vocabulary as the vocabulary list generated by the vocabulary analysis means 11. The vocabulary list storage area 141 in which the list is stored is searched (step 10).
2). If the corresponding vocabulary list storage area 141 is found as a result of the search, the found vocabulary list storage area 14 is found.
The parameter stored in the parameter storage area 142 paired with 1 is set as the parameter to be executed, and the parameter is passed to the instruction executing means 13 (step 103). When the corresponding vocabulary list storage area 141 is not found as a result of the search, the vocabulary list generated by the vocabulary analysis means 11 is passed to the syntax analysis means 12. The syntactic analysis means 12 collates the vocabulary list with syntactic rules, and if the syntactic rules are correct, generates parameters necessary for executing the imperative sentence (step 104). The command management unit 15 stores the vocabulary list and the parameters in the vocabulary list storage area 141 and the parameter storage area 142, respectively, and the parameter storage area 142.
The parameter stored in is set as the parameter to be executed (steps 105 and 106). The instruction executing means 13 interprets the parameter to be executed and executes the statement according to the meaning of the parameter (step 107). The above processing is repeated for the statement to execute.

[0009]

As described above, according to the present invention, the vocabulary list and the parameters of the once-executed sentence are stored in the command management table, and the vocabulary list analyzed by the vocabulary analysis means is equivalent to the vocabulary list. Since the parameters are obtained by searching from the instruction management table, it is not necessary to regenerate the parameters required to execute the statement, and it is possible to reduce the processing time for generating the parameters.

[Brief description of drawings]

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

FIG. 2 is a flowchart of a conventional interpreter processing method.

FIG. 3 is a flow chart of processing of the embodiment of FIG.

[Explanation of symbols]

 11 Vocabulary Analysis Means 12 Syntax Analysis Means 13 Instruction Execution Means 14 Instruction Management Tables 15 Instruction Management Means 141 Vocabulary List Storage Areas 142 Parameter Storage Areas

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyuki Kato Chuo NEC Software Co., Ltd. 2-22-2, Shinei 2-chome, Naka-ku, Nagoya-shi, Aichi

Claims (1)

[Claims] 1. The input sentence is divided into vocabulary units,
In an interpreter processing method having a vocabulary analysis means for generating a vocabulary list, a syntax analysis means for analyzing the vocabulary list and creating parameters necessary for executing the imperative sentence, and an instruction executing means for executing the imperative sentence by the parameter, A command management table for storing a list of executed vocabulary words and corresponding parameters, and a list of vocabulary generated by the vocabulary analysis means have the same value as the list of vocabulary stored in the command management table. An interpreter processing method comprising: an instruction management unit that reads out a corresponding parameter and causes the instruction execution unit to execute the instruction by the parameter.