JPH0756983A - Method and device for editing text file - Google Patents

Abstract

PURPOSE:To prevent a grammatical error for the syntax of an input character from occurring. CONSTITUTION:This text file editor is constituted of a name display means 5 which refers to a grammatical file 10 for a character inputted from an input device 1 by a name sampling/registering means 4, and retrieves and samples a part whose name is declared, and stores it in a name storage data base 8, and refers to a name starting from the character that coincides with that of the character inputted from the input device 1 to the name storage data base 8, and generates a summary, and displays it on an output device 9, and a description qualifying means 6 which performs fundamental grammatical check from the name and description before and behind by referring to the grammatical file 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a text file editing method and apparatus, and more particularly to a text editor for a CAD system for inputting a hardware description language that represents the functions of electronic devices and circuits.

[0002]

2. Description of the Related Art Conventionally, a text file editing method and apparatus for creating and editing a function description in a hardware description language that represents the functions of an electronic device and an electronic circuit of this type have a text editor without knowledge of the hardware description. Input and edit with, and check the grammar to find the grammatically incorrect part,
A special application program that can read the hardware description language was executed and checked to correct the incorrect description.

Further, when a hardware description language is described in signals, variables, definitions, functions, etc., a user who describes the hardware description language has given a name and declared to use it.

[0004]

In this conventional text file editing method and device, even if basic grammar check is performed, all functional contents are described and then a dedicated application program is executed to perform the check. Therefore, a large number of errors occur, and in order to correct the errors, the work of editing with a text editor, writing to a file, and executing the application program to check the syntax must be repeated.

In addition, a user who describes a hardware description language for signals, variables, definitions, functions, etc., gives a name and declares that it is used, and a function description is created using the name. There is a problem that this name is interpreted as a character string in a text editor that does not have knowledge of the description language.

Further, since there are many kinds of names to be declared in the hardware description language and the way of description is different, it is necessary to be careful when describing a function, and to confirm whether the description is incorrect in the description, Since the visual check is performed while reading the grammar book, there is a problem that it is easy to miss an incorrect description.

Furthermore, when the function expressed by the hardware description language is modified, changing the description part of the name affects parts other than the changed part, and it is easy to cause erroneous description. There was a problem.

[0008]

A text file editing method according to the present invention is a text file editing method for inputting and editing a hardware description language representing the function of an electronic device or an electric circuit. A name storage database that stores a first name and a type of the first name already declared in the included syntax; and a grammar file that stores grammatical knowledge of the syntax including the hardware description language, With reference to the grammar file, the location where the second name is declared is searched and extracted from the syntax including the hardware description language input from the character input means, and the second name is registered in the name storage database. A plurality of third characters starting with a character that matches the first character of the language at the prespecified position in the syntax including the input hardware description language. Based on the list of the third names displayed on the character display means, a list of the plurality of third names is created by retrieving the previous from the name storage database and displayed on the character display means. A syntax including the determined fourth name and the input hardware description language is read, and the syntax including the input hardware description language including the fourth name is read with reference to the grammar file. Grammar check.

The text file editing device of the present invention is a text file editing device for inputting and editing a hardware description language representing the function of an electronic device or an electronic circuit,
A name storage database that stores the first name and the type of the first name already declared in the syntax including the hardware description language up to now, and grammatical knowledge of the syntax including the hardware description language. With the stored grammar file,
With reference to the grammar file, the location where the second name is declared is searched and extracted from the syntax including the hardware description language input from the character input means, and the second name is registered in the name storage database. Name extracting / registering means, and a plurality of third names starting from a character that matches a first character of a language at a prespecified position in the syntax including the input hardware description language from the name storage database. A list of the plurality of third names is created by searching, and is confirmed based on the name list display means displayed on the character display means and the list of the third names displayed on the character display means. A syntax including the entered fourth name and the input hardware description language is read, and the input hardware description language including the fourth name is included by referring to the grammar file. It has a name written test processing means composed of a written test means for performing the basic grammar check of the sentence.

[0010]

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

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

In FIG. 1, the present embodiment is such that an input device 1 for inputting a hardware description language consisting of characters, symbols and numbers, an output device 9 for sequentially displaying the progress of an editing process, and an input name and syntax. A data storage device 7 for storing data relating to grammar, a name description verification processing mechanism 3 for controlling input name and syntax verification, and a name description verification processing mechanism 3 for controlling the entire embodiment. The data storage device 7 includes an arithmetic processing unit 2 for performing the above, and the data storage device 7 stores the name extracted by the name extraction / registration mechanism 4 in the name description verification processing mechanism 3 and the function type of the name declaration. 8 and a grammar file 10 that stores grammatical knowledge such as a predetermined reserved word having a special meaning in the hardware description language and the structure of the syntax. A name for registering the second name in the name storage database by searching the grammar file for the location in which the second name is declared from the syntax including the hardware description language input from the device 1 and extracting it. The extraction / registration means 4 and a plurality of third names starting from a character that matches the first character of the language at the prespecified position in the syntax including the input hardware description language are searched from the name storage database. Make a list of multiple third names,
The name list display means 5 to be displayed on the output device 9 and the syntax including the fourth name decided based on the list of the third names displayed on the output device 9 and the input hardware description language Description verification means 6 which reads and refers to the grammar file and performs a basic grammar check of the syntax including the input hardware description language including the fourth name.

FIG. 2 is a flowchart showing the processing procedure of the operation in this embodiment, FIG. 3 is a diagram showing the initial state of the input of the conditional sentence (if sentence) displayed on the output device in this embodiment, and FIG. FIG. 5 shows a display of the result of inputting “S” in the state shown in FIG. 3 in the embodiment, and FIG. 5 shows a result display of the grammar check based on the display of the language selected from the state shown in FIG. 4 in the present embodiment. FIG. 6 is a diagram showing an example of a name storage database in this embodiment, and FIG. 7 is a diagram showing an example of grammar file contents in this embodiment.

Next, the operation of this embodiment will be described with reference to FIGS.
Will be described with reference to.

First, a command key for inputting characters from the input device 1 and transferring the processing to the name description verification processing mechanism 3 is input.

As shown in FIG. 3, input is performed from the input device 1 in a predetermined order, and the process proceeds to the input of a conditional sentence (if sentence). In FIG. 4, the conditional sentence (if sentence) of the hardware description language is displayed. ), The character “S” is first input in the input of the conditional expression that is the structure of the conditional statement.

The processing of the name extraction / registration means 4 refers to the construction of the syntax of the hardware description language of the grammar file 10 and retrieves the name portion of each syntax from the text being edited (S27).

In the example of the syntax structure of the grammar file 10 shown in FIG. 7, the name part has a syntax name beginning with "entity", which is "FPS" in FIG. 4 and "si".
The part that becomes the name of the syntax starting with "gnal" is "SIG"
Is.

The names retrieved in this way are extracted from the text being input / edited (S22), and sorted (S22).
23). The sorted name and the name declaration type are stored in the name storage database 8 (S24).

Next, in the processing of the name display means 5, a name starting from a character that matches a character input as a conditional sentence from the input device 1 is collated from the name storage database 8 (S).
25).

If the collated results match, the process is continued, and if they do not match, the result is displayed on the output device 9 (S).
26). Again, the name storage database 8 is referred to, and a list of names starting from the characters that match the input characters is created (S27). In FIG. 4, the names starting with the entered character “S” are collected from the name storage database 8,
An example is displayed in the lower right as a list.

The user selects one name from the input device 1 from the displayed list of names and inputs the enter key. If there is no name to be selected and the enter key is not input from the input device 1, the result is displayed on the output device 9.

When the enter key is input from the input device 1, the process moves to the description verification means 6 and the description verification means 6
Reads the description before and after the sentence currently input in the hardware description language (S29).

The description before and after means to extract a character string delimited by blank characters from the position where the text is currently input until a semicolon (;) character appears before and after the input direction.

In FIG. 4, since there is no sentence after the current input position (the position where the cursor 11 is), the character strings "if" and "process" are extracted before the input direction. A basic grammar check is performed by referring to the grammar file 10 for these character strings and the character strings selected from the list of displayed names (S30). The result is displayed on the output device 9.

In FIG. 5, "archite" is included in the conditional statement.
Although a name of the type "cture" is selected, it is not written correctly according to the grammatical rules of the hardware description language, so an example in which an error is found in the grammar check is displayed in the lower right.

[0027]

As described above, the present invention is a text file editing method and apparatus for inputting and editing a hardware description language that represents the functions of an electronic device and an electric circuit. A name storage database that stores a first name already declared in and the type of the first name; and a grammar file that stores grammatical knowledge of syntax including a hardware description language,
From the syntax including the hardware description language input from the character input means, the place where the second name is declared is searched and extracted by referring to the grammar file, and the second name is registered in the name storage database, Searching the name storage database for a plurality of third names starting with the first character that matches the first character of the language at the prespecified position in the syntax including the input hardware description language A list is created and displayed on the character display means, and the syntax including the fourth name and the entered hardware description language is read based on the list of the third name displayed on the character display means. By referring to the grammar file and performing a basic grammatical check of the syntax including the input hardware description language including the fourth name, an erroneous description can be detected and dealt with early. Ri, it reduces the number of steps of an error correction for the number of errors that occur in the execution of the application program is reduced. Further, when the description is changed, it is possible to detect the influence on the parts other than the changed part, which has the effect of reducing the man-hours at the time of the change.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing a processing procedure of an operation in this embodiment.

FIG. 3 is a diagram showing an initial input state of a conditional sentence (if sentence) displayed on the output device in the present embodiment.

FIG. 4 is a diagram showing a display of a result of inputting a state “S” shown in FIG. 3 in the present embodiment.

5 is a diagram showing a grammar check result display based on the display of the language selected from the state shown in FIG. 4 in the present embodiment.

FIG. 6 is a diagram showing an example of a name storage database in the present embodiment.

FIG. 7 is a diagram showing an example of contents of a grammar file in the present embodiment.

[Explanation of symbols]

 1 input device 2 arithmetic processing device 3 name description verification processing mechanism 4 name extraction / registration means 5 name display means 6 description verification means 7 data storage device 8 name storage database 9 output device 10 grammar file 11 cursor

Claims (2)

[Claims] 1. In a text file editing method for inputting and editing a hardware description language that represents a function of an electronic device or an electric circuit, a first name already declared in a syntax including a hardware description language up to now. A name storage database that stores the first name type and a grammar file that stores grammatical knowledge of the syntax including the hardware description language, and includes the hardware description language input from the character input means. The syntax including the input hardware description language is searched by extracting the location where the second name is declared from the syntax with reference to the grammar file, extracting the second name, and registering the second name in the name storage database. In the name storage database for a plurality of third names beginning with a letter that matches the first letter of the language at a pre-specified position in A list of third names is created and displayed on the character display means, and a fourth name confirmed based on the list of the third names displayed on the character display means and the input hardware are displayed. Editing a text file including a hardware description language, and performing a basic grammar check of the syntax including the input hardware description language including the fourth name by referring to the grammar file. Method. 2. In a text file editing device for inputting and editing a hardware description language representing the function of an electronic device or electronic circuit, a first name already declared in a syntax including the hardware description language up to now. A name storage database that stores the first name type and a grammar file that stores grammatical knowledge of the syntax including the hardware description language, and includes the hardware description language input from the character input means. Name extraction / registration means for searching the location in which the second name is declared from the syntax by referring to the grammar file, extracting the registered second name, and registering the second name in the name storage database; and the input hardware. The name storage database that stores a plurality of third names starting from a character that matches the first character of the language at a prespecified position in the syntax including the hardware description language. Based on the name list display means for creating a list of the plurality of third names by displaying the character list display means and the list of the third names displayed on the character display means. A syntax including the determined fourth name and the input hardware description language is read, and the syntax including the input hardware description language including the fourth name is read with reference to the grammar file. A text file editing apparatus comprising a name description verification processing means composed of a description verification means for performing various grammar checks.