JP3454188B2 - Command parameter syntax checking device, command parameter syntax checking method, and recording medium storing command parameter syntax analysis program - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a command parameter syntax checking device, a command parameter syntax checking method, and a command parameter syntax checking device for checking whether a combination of a plurality of parameters designated in a command input to a computer is correct. The present invention relates to a recording medium recording a program.

[0002]

2. Description of the Related Art A conventional command syntax analysis system includes a parameter extracting means for extracting a character string from an input command character string with a space as a delimiter, and whether a parameter extracted by the parameter extracting means is in a specifiable state. And a parameter inspection means for inspecting whether or not.

This parameter inspection means uses the parameter 1
The inspection is performed by repeating the condition judgment as to whether the parameters can be designated for each one or the combination of parameters is correct.

[0004]

However, this conventional command syntax analysis system has a problem in that the program logic for inspecting the combination of parameters becomes complicated and the inspection cannot be performed efficiently. There is.

Also, every time a parameter is added or modified, the program logic for inspection must be modified, and the program logic becomes more complicated, resulting in a higher probability of bugs. There is a problem.

An object of the present invention is to enable efficient command parameter inspection processing.

Another object of the present invention is to make it possible to perform high-quality command parameter inspection processing without complicating it, even if command parameters are added or modified.

[0008]

Means for Solving the Problems Command parameters of the present invention
The data syntax checker uses each parameter specified in the command.
Add the node containing the attribute information of the meter to the syntax of the above command.
Corresponding and connecting and storing, and for each parameter
The corresponding parameters for the bit strings that turn on different bits.
A combination storage means for connecting to a node of
Parameter string specified in the command input from the device
And extract the extracted parameter string into the parameter string
Each of the included parameters in different bits
Assignment, corresponding to the presence of individual parameters
Parameter extraction to convert a bit string to turn on bits
Means and the combination storage means are connected and stored.
By tracing the node and the bit string
Data obtained by converting the parameter string extracted by the data extraction means.
The sequence of the parameter sequence
It is equipped with combination checking means for checking the correctness of sentences.
Characterize.

Command parameter syntax checking method of the present invention
Is specified by the computer in the command input from the input device.
The extracted parameter string, and the extracted parameter string
To that of a plurality of parameters included in the parameter sequence.
Assign each to a different bit, and have individual parameters
If it exists, it changes to the bit string that turns on the corresponding bit.
And the parameter extraction step to replace
Node that contains the attribute information of each parameter specified in the command
The command is linked and stored according to the syntax of the command.
And turn on different bits for each parameter.
Store the bit string by connecting it to the node of the corresponding parameter
Stored in combination with the combination storage means
Parameter extraction by tracing the code and the bit string.
Bit string converted from the parameter string extracted by the method and order
By comparing the following, the syntax of the parameter string is correct
And a combination inspection step for inspecting the sex.
It

The recording medium of the present invention is a recording medium according to claim 2.
Record a program that causes a computer to perform steps
It is characterized by having done.

The recording medium group of the present invention is the recording medium of claim 3.
Dividing the program recorded in the body into multiple parts
And record the plurality of portions on a plurality of recording media, respectively.
It is characterized by

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, in the first embodiment of the present invention, a computer 2 operated by program control, and an input such as a keyboard for inputting a command including a parameter string, which is connected to the computer 2 The device 1 and an output device 3 such as a display device or a printing device are included.

As a modification of this embodiment and other embodiments described later, the computer 2 is connected to a recording medium 4 such as a magnetic disk device or a semiconductor memory via a signal line, and the computer 2 is The following processing may be executed by a program loaded from the recording medium 4 via a signal line.

The computer 2 includes a parameter extracting means 21 and
Input parameter storage means 22 and combination inspection means 23
And a combination storage means 24 and a command execution means 25.

The combination storage means 24 stores in advance the combination patterns of all parameters as bit strings. The individual parameters are assigned to each bit of the bit string, and when the corresponding parameter is designated, the bit is set to ON, and when it is not designated, the bit is set to OFF and all the combination patterns are stored.

The parameter extracting means 21 cuts out a plurality of parameters from the parameter string designated by the command input to the input device 1 by separating the blanks and stores them in the input parameter storing means 22.

The input parameter storage means 22 has the same format as the combination storage means 24. The bit string in which the bits corresponding to each of the plurality of parameters extracted by the parameter extracting means 21 are turned on is stored.

The syntax checking means 23 checks whether or not a bit string that matches the bit string stored in the input parameter storage means 22 is stored in the combination storage means 24. When a matching bit string is found, it is determined that the syntax of the designated parameter is correct, the command execution means 25 is notified of that, and the command is executed. If no matching bit string is found, it is determined that the syntax of the designated parameter is incorrect, and the fact is output to the output device 3.

Next, referring to FIGS. 1 to 5, the first embodiment of the present invention will be described.
The overall operation of this embodiment will be described in detail.

When a command including a parameter string is input to the input device 1, the parameter extracting means 21 first removes the command from them to generate a parameter string, and extracts a character string from the parameter string with a space as a delimiter ( Step A1 in FIG. 2). Next, the parameter extraction means 21
Determines whether the cut out character string is correct as a parameter by inspecting the parameter name and the specified value (step A2). When it is determined that the character string is correct, the character string (parameter) is stored in the input parameter storage means 22. Since the input parameter storage means 22 is in the form of a bit string, the parameter is stored by turning on the bit corresponding to the parameter (step A3). On the other hand, step A2
If it is determined that the parameter is incorrect, the message indicating this is displayed on the output device 3 (step A8).

The parameter extracting means 21 similarly
All parameters are extracted from the parameter string and stored in the input parameter storage means 22 (step A4). When the extraction of all the parameters is completed in step A4, the input parameter extraction means 22 turns on the bit corresponding to the extracted parameter and turns off the other bits.

Next, the combination inspecting means 23, among the plurality of bit strings stored in advance in the combination storing means 24,
It is checked whether or not there is a match with the bit string stored in the input parameter storage means 22 (steps A5 and A6). If there is a matching bit string, it is judged that the syntax of the specified parameter string is correct (step A
7) Notify the command execution means 3 to execute the command. On the other hand, if there is no matching bit string, it is determined that the syntax of the designated parameter string is incorrect, and a message indicating that is output to the output device 3 (step A8).

Next, a specific example will be described.

For example, if there is a command having the syntax shown in FIG.
The bit string shown in is stored.

When the command shown in FIG. 3 is input from the input device 1, the parameter extraction means 21 extracts the parameter string "A BD" from them, and further, the parameter "A" is extracted from the parameter string with a space as a delimiter. Is cut out (step A1), it is confirmed that the parameter is correct, and the bit corresponding to "A" in the input parameter storage means 22 is turned ON. (Steps A2 and A3). Similarly, the parameters “B” and “D” are cut out from the parameter string, it is confirmed that the parameters are correct, and the corresponding bit of the input parameter storage means 22 is turned ON. When extraction of all parameters from the parameter string is completed, the input parameter storage means 22 becomes as shown in FIG. 5 (step A4).

The combination checking means 23 stores in the combination storage means 24 a bit string that matches the bit string in which the "A", "B", and "D" bits stored in the input parameter storage means 22 are ON. Whether there is a search is performed (steps A5 and A6). In this case, since the bit string in which the "A", "B", and "D" bits are ON is registered in the combination storage means 24, the search is successful (step A7).

In the first embodiment of the present invention, the bit string corresponding to the preset parameter string is efficiently checked by the extremely simple process of checking whether the bit string corresponding to the input parameter string matches. It has the effect that the command parameter syntax can be checked.

Even if a parameter is added or the command parameter syntax is modified, the portion to be modified is closed in the combination storage means 24 and the parameter extraction means 21 and the combination inspection means 23 do not need to be modified. It has an effect that the inspection process can be performed with high quality without complicating it.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 6, in the second embodiment of the present invention, the computer 5 has a combination inspection means instead of the combination inspection means 23 of the computer 2 of the first embodiment shown in FIG. 26, a combination storage means 27 is provided instead of the combination storage means 24.

The combination storage means 27 is stored for each parameter together with the attribute (required / omissible) of the parameter and the bit string in which the bit corresponding to the parameter is turned on, and the bit strings are connected as shown in the syntax. Has been done. Combination storage means 27 corresponding to the syntax of FIG.
Is shown in FIG.

The combination checking means 26 searches the combination storage means 27 for a concatenated bit string having the same configuration as the bit string stored in the input parameter storage means 22.

Next, the operation of the second embodiment of the present invention will be described in detail with reference to the drawings with reference to FIGS.

The operation of the parameter extracting means 21 and the parameter storing means 22 in this embodiment shown in steps A1 to A4 of FIG. 7 is the same as that of each means 21 and 22 of the first embodiment shown in FIG. Since it is the same as the operation, its explanation is omitted. In the first embodiment, the combination storage means 24 previously stores a bit string indicating a combination of parameters, so the combination checking means 23 uses the bit string stored in the input parameter storage means 22 as the combination storage means 2.
I searched 4.

The combination storage means 27 of this embodiment is
It is configured to express the parameter syntax by combining bit strings. Therefore, the combination inspection means 26
The connected bit strings in the combination storage means 27 are sequentially inspected.

After all the parameters have been bit-coded and stored in the input parameter storage means 22, the combination inspection means 26 is turned ON at the first bit string of the combination storage means 27.
It is also inspected whether or not the bit that has been turned on is also turned on in the input parameter storage means 22. That is, the first bit string of the combination storage means 27 and the input parameter storage means 2
The bit AND of 2 is taken (step B1). When the result of the bit AND is not 0, that is, when the target parameter is designated, the combination checking means 26 performs the same processing on the bit string connected next to the combination storing means 27. (Step B4). On the other hand, when the result of the bit AND is 0, that is, when the target parameter is not designated, the attribute of that parameter is checked (step B3). When the attribute of the parameter stored in the combination storage means 27 is “omissible”, the combination inspection means 26 inspects the next concatenated bit string because the parameter is a parameter that may be omitted. (Step B
4). On the contrary, when the attribute of the parameter stored in the combination storage means 27 is “essential”, the parameter is not specified although it is a parameter that cannot be omitted, and therefore the syntax of the specified parameter string is used. Is determined to be incorrect, and a message indicating that is output device 3
(Step A8).

When the bit string connected to the bit string stored in the combination storing means 27 is exhausted, the combination checking means 26 inputs the input parameter storing means 2
It is checked whether or not all bit strings stored as ON in 2 have been checked (step B6). If all are checked, it is determined that the syntax of the designated parameter string is correct (step A7), and the command execution means 2 is notified to that effect.
5 is notified and the command is executed. On the other hand, if there is an unchecked bit string remaining, it is determined that the syntax of the designated parameter string is incorrect, and a message to that effect is output to the output device 3 (step A8).

Next, a specific example will be described.

For example, if there is a command having the syntax shown in FIG. 3, the combination storage means 26 stores the bit string shown in FIG. 8 in advance.

If the parameter string cut out from the command input from the input device 1 is "AB",
When step A4 is completed, the bit string shown in FIG. 9 is stored in the input parameter storage means 22.

The combination inspection means 26 inspects whether the bit "A" which is ON in the first bit string of the combination storage means 27 is also turned ON in the bit string stored in the input parameter storage means 22 (step). B
1). In the combination checking means 26, the bit “A” of the bit string stored in the input parameter storage means 22 is O.
When it is confirmed that the number is N, the combination storage means 2
It is checked whether the bit "B" which is ON in the next connected bit string in 7 is also ON in the bit string stored in the input parameter storage means 22 (steps B4 and B1). When the combination checking means 26 confirms that the bit "B" of the bit string stored in the input parameter storage means 22 is turned on, the combination checking means 26 turns on the bit string next connected in the combination storage means 27. It is inspected whether the bit of "D" that is turned on is also turned on in the bit string stored in the input parameter storage means 22 (steps B4 and B1). When the combination checking means 26 confirms that the bit "D" of the bit string stored in the input parameter storage means 22 is not ON, it confirms the attribute of the parameter "D" (step B3). The attribute of the parameter “D” is “omissible”, and the bit “D” of the bit string stored in the input parameter storage means 22 does not have to be ON. When the combination checking means 26 confirms that there is no bit string in which the bit "D" is connected to the ON bit string in the combination storing means 27 (step B5),
It is inspected whether or not all the bits "A" and "B" stored as ON in the bit string stored in the input parameter storage means 22 have been checked (step B6), and since the check is completed, the specified parameter is specified. It is determined that the syntax of the column is correct (step A7), and the fact is notified to the command executing means 25 to execute the command.

In the second embodiment of the present invention, the attribute (essential / omissible) of the parameter corresponding to each bit string stored in the combination storage means 27 is stored together, and the connected bit strings are sequentially inspected. By doing so, the syntax check of the parameter string is performed. Therefore, there is a new effect that the storage capacity can be reduced as compared with the first embodiment in which all combinations of bit strings are stored in advance. This effect is remarkable when the parameters are added. FIG. 10 shows the combination storage means 24 and the combination storage means 27 when one optional parameter is added to the command shown in FIG. In this case, the storage capacity of the combination storage means 24 is twice as large as that before the parameter is added, but in the case of the combination storage means 27, the capacity increase by one parameter is sufficient.

Next, a third embodiment of the present invention will be described in detail with reference to the drawings. Referring to FIG.
In the third embodiment of the present invention, the computer 6 is the combination checking means 2 of the computer 5 of the second embodiment shown in FIG.
6, a combination inspection means 28 is provided instead of 6, and a combination storage means 29 is provided instead of the combination storage means 27.

The combination storage means 29 is composed of a plurality of nodes and a plurality of syntax bit string tables. Each node is connected to the syntax bit string table and connected to the node indicating the next parsing target parameter. And the connection to the node indicating the tributary of the syntax, and the attribute (required / can be omitted) of the syntax bit string table connected to the node are stored, and the connection between the nodes is shown to indicate the syntax. . An example of the combination storage means 29 is shown in FIG.

The combination checking means 28 searches the combination storage means 29 for a concatenated bit string having the same structure as the bit string stored in the input parameter storage means 22.

Next, the operation of the third embodiment of the present invention will be described in detail with reference to the drawings with reference to FIGS.

Parameter extracting means 2 in the third embodiment of the present invention shown in steps A1 to A4 of FIG.
1 and the operation of the parameter storage means 22 are the same as the operation of each means 21 and 22 of the first embodiment shown in FIG. In the second embodiment, the combination storage means 27 stores the parameter syntax by combining the bit strings, so the combination checking means 26 sequentially checks the concatenated bit string in the combination storage means 27.

The combination storage means 29 of the third embodiment of the present invention is configured to express the syntax of a parameter by a plurality of nodes and a plurality of syntax bit string tables. Therefore, the combination checking means 28 sequentially checks the syntax bit string tables connected to the nodes in the combination storing means 29.

When all the parameters have been bit-coded and stored in the input parameter storage means 22, the combination checking means 28 uses O as the bit string of the syntax bit string table connected to the first node of the combination storing means 29.
It is checked whether the bit set to N is also turned on in the input parameter storage means 22. That is, the bit AND of the syntax bit string table connected to the first node of the combination storage means 29 and the input parameter storage means 22 is performed (step C1). When the result of the bit AND is not 0, that is, when the target parameter is designated, the combination checking means 28 performs the same processing on the node connected next to the combination storing means 29. (Step C4). On the other hand, bit A
When the ND result is 0, that is, when the target parameter is not specified, the attribute of the parameter is checked (step C3). The combination inspection means 28
If the attribute of the parameter stored in the combination storage means 29 is "omissible", that parameter is a parameter that may be omitted, so the next connected node is inspected (step C4). . On the contrary, the attribute of the parameter stored in the combination storage means 29 is "
If it is "essential", it is inspected whether the target node is connected to the tributary node (step C8).

When there is no more node indicating the next parsing target parameter stored in the combination storage unit 29, the combination checking unit 28 determines that all bit strings stored in the input parameter storage unit 22 are ON. It is inspected whether it is checked (step C6). If all are checked, it is determined that the syntax of the designated parameter string is correct (step A7), the fact is notified to the command executing means 25, and the command is executed. On the other hand, if there remains an unchecked bit string, the node traced so far is returned (step C7), and it is checked whether or not there is a connection to a tributary node (step C8). If the returned node is connected to the tributary node, the syntax bit string table connected to the tributary node is checked (step C1). When the returned node has no connection to the tributary node, it is checked whether the currently targeted node is the first node that started the check (step C).
9). If the target node is not the first node that started the inspection, the node traced so far is returned (step C7), and the inspection for the tributary node is performed again. If it is the first node that started the inspection, it is determined that the syntax of the designated parameter string is incorrect, and a message indicating that is output to the output device 3 (step A8).

Next, a specific example will be described.

For example, consider the case of a command having a syntax and combination storage means 29 as shown in FIG.

Assuming that the parameter string cut out from the command input from the input device 1 is "A ED", the bit string shown in FIG. 14 is stored in the input parameter storage means 22 when step A4 is completed. .

The combination checking means 28 also uses the bit string in which the "A" bit turned on in the syntax bit string table connected to the first node of the combination storing means 29 is stored in the input parameter storing means 22. It is inspected whether it is ON (step C1). When the combination checking means 28 confirms that the bit "A" of the bit string stored in the input parameter storage means 22 is ON, the syntax of the node connected next in the combination storage means 29 is determined. It is checked whether the bit "B" which is ON in the bit string table is also ON in the bit string stored in the input parameter storage means 22. The combination inspecting means 28 uses the bit string “stored in the input parameter storage means 22”.
"B" bit is not ON, so it is ON in the next bit string in the syntax bit string table "
It is inspected whether the bit "C" is also ON in the bit string stored in the input parameter storage means 22 (steps C4, C1). The combination inspection means 28 checks the bit string "stored in the input parameter storage means 22". C "
Since the bit of is not turned on, the attribute of the node is confirmed (step C3). Since the attribute of the node is "essential", it is inspected whether the node currently inspected has a tributary node (step C8). Since the node is connected to the tributary node, the node to be inspected is used as the tributary node, and the "D" bit that is ON in the syntax bit string table connected to the node is stored in the input parameter storage means 22. It is checked whether or not the existing bit string is ON (step C1). When the combination checking means 28 confirms that the bit "D" of the bit string stored in the input parameter storage means 22 is ON, the syntax of the node connected next in the combination storage means 29 is determined. It is checked whether the bit "E" which is ON in the bit string table is also ON in the bit string stored in the input parameter storage means 22. The combination checking means 28 uses the bit string “E” stored in the input parameter storage means 22.
When it is confirmed that the combination storage means 29 has no next connected node (step C5), the input parameter storage means 2 is confirmed.
It is checked whether or not all the bits "A", "E" and "D" stored as ON in the bit string stored in 2 are checked (step C6). Since all the checks have been completed, it is judged that the syntax of the designated parameter string is correct (step A7), and the command execution means 25
Notify to execute the command.

In the third embodiment of the present invention, the combination storage means 29 is provided with a node corresponding to each syntax bit string table in advance, the node is connected to the syntax bit string table, and each node is further connected. By connecting the spaces so as to indicate the syntax, the syntax bit string table connected to the node is sequentially checked to check the syntax of the parameter string. Since a node is provided in the syntax bit string table and the nodes are connected to the syntax bit string table, one syntax bit string table is prepared if there are partially identical syntax parameter configurations.
Since each node only needs to connect to this syntax table, there is a new effect that the storage capacity can be reduced. This effect is most noticeable when the syntax becomes complicated.

[0065]

As described above, according to the present invention, the command parameter inspection process can be efficiently performed, and even if the command parameter is added or modified, the command parameter inspection process is not complicated. , Has the effect that it can be done with good quality.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing the operation of the first exemplary embodiment of the present invention.

FIG. 3 is a diagram showing an example of a command syntax according to the first embodiment of the present invention.

FIG. 4 is a diagram showing an example of a structure of a combination storage means 24 according to the first embodiment of the present invention.

FIG. 5 is a diagram showing an example of an operation of a combination inspection means 23 in the first embodiment of the present invention.

FIG. 6 is a block diagram showing another embodiment of the present invention.

FIG. 7 is a flowchart showing an operation of another embodiment of the present invention.

FIG. 8 is a diagram showing an example of a structure of a combination storage means 27 in another embodiment of the present invention.

FIG. 9 is a diagram showing an example of the operation of the combination inspection means 26 in another embodiment of the present invention.

FIG. 10 is a diagram for explaining the effect of another embodiment of the present invention.

FIG. 11 is a block diagram showing a third embodiment of the present invention.

FIG. 12 is a flowchart showing an operation of the third exemplary embodiment of the present invention.

FIG. 13 is a diagram showing an example of a structure of a combination storage means 29 according to the third embodiment of the present invention.

FIG. 14 is a diagram showing an example of an operation of a combination inspection means 28 according to the third embodiment of the present invention.

[Explanation of symbols]

1 input device 2 calculator 3 output devices 4 recording media 5 calculator 21 Parameter extraction means 22 input parameter storage means 23 Combination inspection means 24 Combination storage means 25 Command execution means 26 Combination inspection means 27 combination storage means 28 Combination inspection means 29 combination storage means

─────────────────────────────────────────────────── ─── Continued Front Page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 15 / 00,11 / 28

Claims (4)

(57) [Claims] 1. For each parameter specified in the command
Make the node containing the attribute information correspond to the syntax of the command
Connected and stored together, and the
The bit string that turns on the bit
Combination storage means for connecting and storing with the command and the parameter specified in the command input from the input device.
Data string and the extracted parameter string
Different parameters are included in the column for different parameters.
Assigned to each parameter to handle individual parameters
Parameter to convert to bit string
The extraction means and the node stored in connection with the combination storage means.
Parameter extraction by tracing the code and the bit string.
Bit string converted from the parameter string extracted by the method and order
By comparing the following, the syntax of the parameter string is correct
And a combination inspection means for inspecting the sex.
Command parameter syntax checker. 2. A command input from an input device by a computer
The parameter string specified in the
Data string, a plurality of parameters included in the parameter string
Each of the
Bit that turns on the corresponding bit if data exists
A parameter extraction step for converting to a column, and the computer
Is the attribute information of each parameter specified in the command
Connect nodes that contain the
It is stored as
Concatenate the bit string to set to the corresponding parameter node
Are stored by being connected to a combination storage means
By tracing the node and the bit string
Data obtained by converting the parameter string extracted by the data extraction means.
The sequence of the parameter sequence
Including a combination checking step to check the correctness of the sentence
Characteristic command parameter syntax check method. 3. The steps of claim 2 are calculated by a computer.
It records the program to be executed by the computer.
recoding media. 4. The recording medium recorded on the recording medium according to claim 3.
Program in multiple parts And divide the parts into
Recording medium characterized by recording on each of a plurality of recording media
Body groups.