JPH06124197A - Software structure analysis supporting system - Google Patents

Abstract

PURPOSE:To suitably support the structure analysis of an application program by always properly maintaining and clearly displaying the structure of relation between classes and objects from those objects even when changing the defini tion or structure of those classes. CONSTITUTION:A source code describing the class structure and the relation of class/object is applied to a class/object registering device 1. At the registering device 1, the source code is analyzed, and class information and class structure information is written to a class structure information data base 2. On the other hand, object information and class/object information is written to a class/object related information data base 3. At a class/object information processor 4, the data bases 2 and 3 are retrieved, and the result is written in a display information memory 5 and monitored back to a display/input controller 7. A user confirms the reaction of the system corresponding to a user request such as 'display the list of information for a certain object' or 'display the list of operation functions for a certain class' or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a software structure analysis support system for supporting software structure analysis work in software development and maintenance, and more particularly,
The present invention relates to implementation of a system suitable for supporting the relation structure analysis of objects and classes in terms of software programmed by object-oriented programming.

[0002]

2. Description of the Related Art As is well known as object-oriented programming, a group of attributes (data group) that can have a value at the time of being assigned to a computer storage device and a group of operation functions (for operating values of the attribute group ( Method is defined in advance as a conceptual unit that is a group of methods, and that class is used as a type to modify (declare) one class or a plurality of classes in which the operation function groups are hierarchically inherited. ) Is a programming method for developing software (program) by creating an object that is the entity of the object and describing the exchange of information (message) on the computer storage device between these created objects.

Further, such object-oriented programming makes it easy to reuse a program.

-Thus, the development efficiency of software is significantly improved.

It is also well known that it is a programming technique that has received a great deal of attention in recent years due to the above reasons.

By the way, in a traditional program development environment using a so-called procedural programming language, there is a concept of cross reference. For example, a list of processes that access specific data or data accessed by specific processes. The function to display the list is provided as part of the software development / maintenance support environment.

On the other hand, even in a recent program development environment using an object-oriented programming language,
Although it is different from the concept of cross reference, as a browser-type parts search tool, the function to display the content / usage of a part by selecting a specific part from the list of reusable parts is available. It is being provided as part of the software development support environment.

[0008] For example, Smalltalk, which is one of such object-oriented programming languages, provides a function called a class hierarchy browser, which displays a list of classes and defines individual classes from the list items. It is possible to confirm / change the attributes and details of operations. However, the information held by this class hierarchy browser is only the class information,
The relationship between the objects actually defined in the context of the application program and the existing classes is not retained in this class hierarchy browser. Therefore, when there is a change in a class, the range of change between classes can be specified, but the range of spread to the object cannot be specified.

[0009]

As described above, in object-oriented programming, a program is developed by describing the exchange of information (message) between objects.

Here, since an object realizes an abstract data type, it is generally said that, even if the data is changed, its ripple range is specified within each object. However, if there is a defect in the class definition or structure, the change will affect many objects. Such a situation naturally occurs in the process of program development and maintenance, and even in the recently proposed object-oriented software analysis (OOA) process, the class definition and structure cannot be specified from the beginning and the analysis is not performed. These are often changed in the process.

Therefore, in software development based on such object-oriented programming, the change of the class hierarchy and the spillover of the change to the related objects due to the change may occur frequently in any process of software development. I have a secret.

Heretofore, it has been possible to display the list of classes and confirm / change the details of attributes and operations defined by each class from the list items through the class hierarchy browser as described above. , When the definition or structure of the class is changed in this way, it was not possible to identify and confirm the contents to the related object's spillover range, so the software structure of the application program as a whole. It was a difficult task to properly analyze the behavior and grasp its behavior accurately.

The present invention has been made in view of these circumstances, and in software programmed by object-oriented programming, even if the definition or structure of a class is changed, the class and the object are Always maintain proper relationship structure,
Moreover, it is an object of the present invention to provide a software structural analysis support system that clearly displays this and suitably supports the structural analysis of the entire application program.

[0014]

In order to achieve these objects, the present invention is premised on software programmed by the above object-oriented programming.
(a) A first database in which the classes defined for each piece of software to be structurally analyzed, and a class structure indicating the dependency relationships between these classes are registered, (b) the objects of the generated objects for the same software. A second database in which the object name and the reification form of each of the objects by class modification are registered, (c) display means for visually displaying various information registered in the first and second databases, (
d) first display control means for displaying a list of all classes and all objects registered in the first and second databases on the display means, and (e) all classes registered in the first database. A class is searched for one or a plurality of classes related to an object designated by a user based on the concrete aspect of the object registered in the second database and the class structure registered in the first database. Second for identifying and displaying this on the display means
The display control means of 1 is provided to configure the system.

[0015]

In this system, as described above, in addition to managing the classes defined in the analysis target software and the class structure showing the dependency relationships between these classes through the first database of (a), its application program In each context, the object name of each object that is declared and created, and the concrete aspect of each of these objects by the above class qualification,
It is managed through the second database in (b). Here, the class structure showing the dependency relationship between the classes is nothing but a bidirectional link structure formed between these classes to show the parent-child relationship of each class, and the concrete structure by class modification of each object. The form of conversion is nothing but a bidirectional link structure that is set up between each object and each related class.

The (d) first display control means is a list of all the registered classes and objects described in (c) as an initial screen for analyzing the structure of the target software. The second display control means of (e) above displays a bidirectional link holding the parent-child relationship of each class registered in the first database upward (child To parent direction)
And a two-way link that holds the relationship between the object and the class registered in the second database in the upward direction (from the object to the class), the class group from the specific object specified by the user. When viewed, which class is being used (inherited) from the specific object is displayed on the display means in an identifying manner.

Therefore, even if the definition or structure of the class is changed, the changed program is registered in the first and second databases as the software to be analyzed, and after that, any arbitrary analysis is desired. By simply specifying the object as appropriate, the relationship structure between the object and the class viewed from the object can be properly identified and displayed, and the information that the objects can inherit from the class can be easily grasped.

In addition to the above configuration, (f) a class and a class in which an operation function group of these classes that can be used by the object is registered in the first database for each of the identified and displayed classes. Third display control means for searching based on the structure and identifying and displaying this on the display means. By including the above, it becomes possible to more accurately grasp the information that these objects can inherit from the class.

Incidentally, in this case, the third display control means refers to a specific object designated by the user.
By tracing the relationship between the class and the object registered in the second database and tracing the parent-child relation of the class registered in the first database, the operation function defined in the class that is the direct parent of the object In addition to the parent operation function, and further the parent operation function, it repeats the search for the operation function up to the first parent, and the registered contents of the operation function list each time a new operation function is found. Is added to identify the final list of operation functions on the display means.

Further, according to the information registered in the first and second databases and the link structure thereof, not only the conventional display of the list of operation functions defined for each class, but also, for example, the first By tracing the link between the parent and child registered in the database of above from top to bottom, among these operation functions, only the operation functions that have not been redefined in the child class can be distinguished and displayed. You can also

Further, even when it is desired to confirm the attributes and operation functions available for each object, a list display of such information and an identification display as to which information is inherited from which class and the like are displayed. You can also check it easily.

Incidentally, conventionally, in order to confirm the specifications and implementations of individual classes in an environment such as the browser, it is sufficient to be able to see even the attributes defined for each class and their operation function groups at once. Therefore, even if the information that should be inherited from the parent class is redefined in the child class and is not actually inherited in the child class, the parent class information is the parent class and the child class information is the child class separately. Information display control is performed based on the policy that it is necessary to be able to confirm, such as identification display of operation functions that are not redefined in such child classes, and which information is inherited from which class. Could not even be identified.

[0023]

FIG. 1 shows an embodiment of a software structure analysis support system according to the present invention.

That is, this system supports the structural analysis of the software described by the above-mentioned object-oriented programming language, of which the class / object registration device 1 shown in FIG.
Is an object-oriented programming language such as Smalltalk, C
++ (Sea Plus Plus), Objective-C
It has an algorithm that interprets its grammar and syntax corresponding to any language such as (Objective Sea).
By inputting the source code described in the corresponding language, while lexically analyzing the source code, (A)
Class information consisting of the class names defined there, the attributes (data) group defined for each of these classes, and the operation functions (methods) group for operating these attribute groups, etc. (B) These classes Class structure information indicating parent-child relationship between each other, (C) generated object name, and source file name where these objects are defined,
Object information including definition / usage location (line number number) information of those objects on the source file,
(D) which class the object is reified with, and class-object related information indicating the reification mode are respectively extracted, and among these extracted information, the class information of (A), and ( The class structure information of (B) is registered in the class structure information database 2, and the object information of (C) and the class-object related information of (D) are registered in the class-object related information database 3. It is a device. The class information and class structure information registered in the class structure information database 2 also include definitions in a library, that is, a class library. Regarding the definition contents in this class library,
Pre-registration before inputting the above source code is possible. Further, here, the class structure information indicates a bidirectional link structure that is set up between the classes to show the parent-child relationship of each class. The class-object relation information is described and registered as a reference table, and the above-mentioned class-object relation information also indicates a bidirectional link structure extended between each object and its related class. The link structure is also described and registered as a reference table, for example.

The class / object information processing apparatus 4 shown in FIG. 1 displays a list of classes registered in the class structure information database 2 and a list of objects registered in the class-object relation information database 3. The information is written in the display information memory 5, and the display / input control device 7 visually displays them through the window management device 6, and at the same time, event information given from the window management device 6, that is, a command input by a user through an input device such as a mouse or a keyboard. The class structure information database 2 and the class-object relation information database 3 are searched according to the contents (here, designation of a class, an object, etc.), and the search results are as follows: -specific 1 to multiple classes-specific 1 to Multiple objects ・ Specific 1 to A device for obtaining information about its attribute so related to the implementation-specific one or a plurality of classes or objects in the operation function group, their operation functions related to the number of classes or objects. As for these acquired information, information for appropriately identifying them is written in the display information memory 5, and the information can be visually displayed on the display / input control device 7 through the window management device 6 as in the above.

Here, the display information memory 5 is, for example, a VRA in which visible display information for each time is temporarily stored.
The window management device 6 is a storage device including M (video / random access memory) and the like, and the window management device 6 can perform various operations (display and processing of data) on one display device screen such as a workstation or a personal computer. One or a plurality of windows to be performed, that is, windows are defined, and a plurality of different data are simultaneously displayed through the defined windows, or the same data is displayed in various different forms. Is a device that provides a unified processing environment between the data (some of which are on inactive windows and may not be directly displayed), and the display / input control device 7 is Under the control of the window management device 6, the above windows and those windows are displayed on a CRT display device or the like. A device that controls the user interface, which visually displays handled data, messages, and the like, interprets the contents (events) of the user command through the input device such as the mouse and keyboard, and transmits this to the window management device 6. Is. All of these devices are well known and will not be described again here.

Next, the operation of this embodiment system will be described.

This system is basically used in the following three phases. (1) Registration of class and object (2) Initial display of class and object information (3) Display of class and object information in response to user's instructions Hereinafter, according to these phases, usage modes and accompanying embodiments The operation of the system will be described.

(1) Registration of Class and Object Here, the above source code in which the structure of the class and the relationship between the class and the object are written is given to the class / object registration device 1.

As a result, the class / object registration device 1 analyzes this source code as described above,
Write the class information of each class and the class structure information of those classes to the class structure information database 2,
Also, regarding the object information of each object and the class-object related information between those objects and the above-mentioned class, this is written in the class-object related information database 3.

2 and 3, class information, class structure information, object information, which are assumed to have been written out,
And about class-object related information, an example thereof is schematically shown.

By the way, in FIG. 2, as a class, "class-0
, "Class-1", "class-11", "class-2", "c"
"lass-3", "class-31", "class-32", "class-4"
, And “class-5”, and their parent-child relationship (class structure) is “class-0” ← “class-1” ← “class-11” · “class-0” ← “class-2” "Class-0" ← "class-3" ← "class-31" ・ "class-0" ← "class-3" ← "class-32" ・ "class-0" ← "class-4" ・ "class -0 "←" class-5 "is registered in the class structure information database 2, and the objects" object-01 "," object-02 ", and" ob "are registered.
"ject-03", ... "object-09", "object-10" and their relationship (class-object related information)-"object-01"->"class-3"-"object-02"->"Class-11"-"object-03"->"class-31" ...- "object-09"->"class-32"-"object-10"->"class-3" Information database 3
It has been registered in.

In addition, FIG. 3 shows, as a part of the class information of each of the above classes: "class-0", an operation function "method-01",
"Method-02" and "method-03" are defined.

"Class-3" has an operation function of "meth"
"od-02", "method-04", and "method-05" are defined.

-"Meth-31" has an operation function "meth"
od-04 "," method-05 "," method-06 ", and" me "
thod-07 "is defined.

"Class-32" has an operation function "meth"
"od-11" and "method-12" are defined.

"Class-4" has an operation function of "meth"
"od-08", "method-09", and "method-10" are defined.

These are shown respectively.

In the following, on the premise of the examples in FIGS. 2 and 3, the modes of display control relating to them will be described.

(2) Initial display of class and object information In this case, "class and object registration" in (1) above is performed.
Using the class structure information and the class-object related information registered in the class structure information database 2 and the class-object related information database 3 throughout the phase, the class / object information processing device 4
Writes the information to be displayed on the screen of the display / input control device 7 in the display information memory 5 in the initial state.

As a result, the window management device 6 displays a list of classes and objects as an initial screen on the screen of the display / input control device 7 based on the information written in the display information memory 5. This is as described above.

(3) Display of Class and Object Information in Response to User's Instructions Here, first, the user uses the input device such as a mouse or keyboard on the screen of the display / input control device 7 to request analysis. And request a request.

As described above, the user's instruction is interpreted by the display / input control device 7, converted into an event, and input to the window management device 6.

Upon receiving the event, the window management device 6 interprets the content of the event, further translates it into appropriate event information, and delivers the translated event information to the class / object information processing device 4.

As a result, as described above, the class / object information processing device 4 searches the class structure information database 2 and the class-object relation information database 3 according to the passed information, and obtains the search result. The information will be written in the display information memory 5. Then, the written information is monitored back to the display / input control device 7 through the window management device 6.

In this way, the user can check the reaction of the system to the analysis-desired request on the screen of the display / input control device 7.

The user's request is as follows: -Display a list of (attribute) information of a certain object-Display a list of operation functions of a certain object-Class (group) inherited by a certain object Specify-Display the implementation of a specific operation function of an object-Display a list of (attribute) information of a class-Display a list of operation functions of a class.

FIG. 4 shows the transition of the display control mode as the system of the embodiment with respect to each user's request regarding the phase of "display of information on class and object in response to user's instruction" in (3). Further, FIGS. 5 to 11 show examples of screen display on the display / input control device 7 associated with the display control.
With reference to FIG. 4 and FIGS. 5 to 11, the operation of the embodiment system in the “display of class and object information in response to user instruction” phase will be described in more detail.

FIG. 5 shows an initial screen of the screen of the display / input control device 7 formed in the phase (2) "initial display of class and object information" (step S1 in FIG. 4).

Here, a list of classes defined by the source code is structurally displayed in the "classes" pane which is the class display area of the screen. Structurally, for example, a subclass of "class-0" is "class-1".
, "Class-2", "class-3", "class-4", "c"
lass-5 "and the subclass of" class-1 "is" c
"lass-11", etc. means that it is illustrated by indentation. In the case of the example here, the structure of the class indicated by this indentation is as shown in FIG.
It goes without saying that it will be the same as the upper half of the class structure shown in.

On the other hand, in the "objects" pane which is the object display area of the same screen, a list of objects generated by the classes defined by the same source code is displayed. There is no structure here. And in the case of the example here, this is the same as the lower half of the class structure shown in FIG. 2 above.

When the user points an arbitrary object on the initial screen with a mouse pointer, it is displayed / displayed.
The screen of the input control device 7 transits in the manner shown in FIG. FIG. 6 shows a screen as a result of the user pointing an arbitrary object (“object-03” in this example) with the mouse pointer.

According to such a user's instruction, the designated object "object-03" is highlighted and the class to which the designated object "object-03" inherits information is marked in the "classes" pane. (FIG. 4 step S2). Here the mark's
"Is added, and the specified object" object-03 "becomes" class-0 "," class-3 ",
It can be seen that the information of each class such as "class-31" is inherited. In this state, the bottom pane of the screen also contains all the attributes that the specified object "object-03" inherits from these classes "class-0", "class-3", and "class-31". It is displayed (step S2 in FIG. 4).

In the display control state shown in FIG. 6, an arbitrary class can be selected from the "classes" pane and a list of operation functions available for the object "object-03" can be displayed. it can.

FIG. 7 shows this designated object "object-0.
For example, a screen example is shown in which the mouse is dragged (the mouse button is pressed and moved while the mouse button is being pressed) while instructing "3".

In this case, as shown in FIG.
Next to the objects pane, specify the specified object "ob
A list of operation functions that can be used for "ject-03" is also displayed as a popup screen (step S in FIG. 4).
3).

Here, the operation functions that can be used in each of the displayed classes are based on the class structure illustrated in FIG. 3 and the operation functions defined therein. Is searched for.

That is, the object "object-03"
"Is for" class-0 "," class-3 ", and" class-3 "
It is first determined that the information of the three classes of "1" is inherited, and then the property of this "inheritance" in object orientation is added to the condition that the child operation function has priority over the parent operation function. , As a result, of these, "method-01" and "method-0" defined by "class-0"
3 ", or" method-02 "defined by" class-3 ",
Furthermore, "method-04" and "meth" defined by "class-31"
It is determined that seven operation functions of "od-05", "method-06", and "method-07" can be used. Thus, the pop-up screen displays a list of these seven operation functions.

In the display control state shown in FIG. 7, the opened pop-up screen can be canceled, or a specific operation function is selected from the operation function list displayed in the pop-up screen. You can also

FIG. 8 shows any of the operation functions listed in the pop-up screen (in this example, "method-05
)) Is, for example, a mouse click (operation of pressing a mouse button).

In this case, as shown in FIG.
The operation function "method-05" specified by the user is highlighted, and the operation function "meth" is displayed in the pane below it.
"od-05" is displayed (step S4 in FIG. 4). According to the class structure illustrated in FIG. 3 and the operation function defined therein, the operation function "method
-05 "is defined in both" class-3 "and" class-31 ", but here again due to the nature of" inheritance ", the child operation function takes precedence over the parent operation function. In the end, here, the implementation displayed in the lower pane is the operation function "me" defined in the class "class-31".
thod-05 ”.

In the display control state shown in FIG. 8, this open popup screen can be canceled.

FIG. 9 shows the object display area "ob".
After selecting an object from the "jects" pane, and then pointing to the desired class ("class-3" in this example) with the mouse pointer from the "classes" pane, which is the class display area. There is.

In this case, as shown in FIG.
The class "class-3" specified by the user is highlighted, and in the pane below it, the class "class-3" is displayed.
Information (attribute) is displayed (step S5 in FIG. 4). However, the attributes inherited from the upper level are not displayed here.

In the display control state shown in FIG. 9, an arbitrary object can be selected from the "objects" pane, and a list of operation functions defined by the designated class "class-3" is displayed. You can also let it.

FIG. 10 shows an example of a screen when the mouse is dragged while the class "class-3" is being designated.

In this case, as shown in FIG. 10, a list of operation functions defined for the specified class "class-3" is displayed as a pop-up screen next to the "classes" pane. It is also displayed together (step S6 in FIG. 4).

Here, the operation functions that can be used in this class "class-3" are as shown in the class structure illustrated in FIG. 3 and the operation functions defined therein. That is, this class "class-3" has "me
"thod-02", "method-04", and "method-05" are defined, and a list of these three operation functions is displayed on the pop-up screen.

In addition, here, a marking ("s") for distinguishing whether or not these operation functions are valid for the previously specified object (in this case, "object-03")
"Mark) is also displayed.

Incidentally, in the example of FIG. 10, the marked operation function "method-02" is valid for the above-mentioned object "object-03", and other unmarked operation functions "method-04" and "method-02" are used. method-05 ”indicates that it is not valid for the same object“ object-3 ”. The reason is that in the class structure illustrated in FIG. 3 and the operation function defined therein, the operation functions “method-04” and “method-05” are redefined in the class “class-31”. The above object "object-03" is a class "class-3"
Information of both "1" and "class-3" is inherited-The class "class-31" is a class "class-" due to the structure of the class.
Due to the fact that it is defined as a child of "3", the child class "class-03
-31 ", the operation functions" method-04 "and" metho "
"d-05" has priority over the operation functions "method-04" and "method-05" defined in its parent class "class-3".

In the display control state shown in FIG. 10, the opened pop-up screen can be canceled, or a specific operation function can be selected from the operation function group displayed in the pop-up screen. You can also

FIG. 11 shows an arbitrary operation function (in this example, "method-0
5 ”) shows an example of a screen as a result of mouse click.

In this case, as shown in FIG. 11, the operation function "method-05" designated by the user is highlighted and the operation function "meth" is displayed in the pane below it.
"od-05" is displayed (step S7 in FIG. 4). According to the class structure illustrated in FIG. 3 and the operation function defined therein, the operation function "method-05" is defined in both "class-3" and "class-31". However, since the operation function defined in the class "class-3" is targeted here, the implementation displayed in the lower pane above is the operation function defined in this class "class-3". It is an implementation of "method-05".

In the display control state shown in FIG. 11, the open pop-up screen can be canceled.

As described above, according to the software structure analysis support system according to the embodiment, based on the information registered in the class structure information database 2 and the class-object relation information database 3 in advance: Target) List display of classes and objects defined and generated in the program (initial screen). -Identification display (marking display) of all classes related to the object specified by the user from the object list. -Reference display of all attribute information of the specified object. -Reference display of all operation functions (methods) that can be used by the specified object. -A reference display of the implementation of the operation function specified by the user. -Reference display of all attribute information of the class specified by the user from the class list. -All operation functions (methods) defined in the specified class
Reference display. -A reference display of the implementation of the operation function specified by the user. Since display control such as etc. is realized, it is easy to visually understand the relationship between any given object and its related class, in particular, the details of the information that the object can inherit from the class, etc. Even if it is a third party, it will be possible to accurately analyze and judge the relational structure of them in this program.

It should be noted that in the system of the above embodiment, FIG.
The display modes of the classes and objects illustrated in FIG. 11, and further the display modes of the attribute groups, operation function groups, and implementations thereof are merely examples, and the information may be visually associated with predetermined association. As a matter of course, any other display form may be adopted.

The above-described operation (mouse click, drag, etc.) for switching these display modes (display control) is also merely an example. In short, if the event is defined in consideration of the operation content that can be recognized by the window management device 6 and the user's intention is accurately reflected, the display mode including the operation by the keyboard is also included. As the operation for switching (display control), any other operation may be defined.

In addition, in FIG. 2 and FIG. 3 described above, for simplification, the case where the inheritance structure illustrated therein is “simple inheritance (inheritance in the form having only one ancestor (superclass)”) Although mentioned only, even when the structure of the inheritance is so-called “multiple inheritance (inheritance in the form of having multiple ancestors (superclasses)”), the system can be similarly applied. That is, according to the system, even in such "multiple inheritance", the link structure is registered in the databases 2 and 3 through the class / object registration device 1 as described above. Only at the time of display control, it is sufficient to adopt a mode in which the structure can be identified by, for example, making it graphic or changing the marking.

By the way, according to the system of the embodiment,
As shown in FIG. 4, considerably detailed information is registered in the databases 2 and 3 according to the user's operation such as the attribute group and the operation function group related to the specified object and class, and further the implementation thereof. The display will be controlled based on the information, but above all, if the list of classes related to the specified object can be identified and displayed, ・ Grasping the relationship between any object and class, or ・ Specifying The minimum necessary information will be obtained in order to identify the scope of the impact of changes to the classes and objects of
The system of the present invention does not necessarily have to have all of the display control functions described above.

[0080]

As described above, according to the present invention, not only the class but also the information of the class that becomes the parent and the existence of all the objects that are declared and created in the application program at any time. To register it in the database and manage it at the same time, and then
Targeting all of these registered classes, one or a plurality of classes related to the object designated by the user are searched based on the concrete aspect of the object and the dependency of these classes, and this is identified and displayed on the display means. By doing so, the relationship structure between the object and the class from the viewpoint of the object becomes clear, and by the way, the information that the object can inherit from the class can be grasped, the specific class, and the influence range of the influence of the change of the object can be specified. It will be easy.

As a result, the amount of work involved in software development / maintenance based on object-oriented programming can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a software structure analysis support system according to the present invention.

FIG. 2 is a class structure information database shown in FIG.
FIG. 3 is a block diagram schematically showing a link structure of class structure information and class-object related information that are to be registered in a class-object related information database.

FIG. 3 is a block diagram schematically showing an example of operation functions defined in some of the classes shown in FIG.

FIG. 4 is a flowchart showing a transition of display control according to various events, as an operation example of the system of this embodiment.

5 is a schematic diagram showing an example of an initial screen of the system of the embodiment as an example of a display screen on the display / input control device shown in FIG. 1. FIG.

FIG. 6 is a schematic view showing a state where an object is designated by a user as an example of a display screen in the display / input control device shown in FIG.

7 is a schematic diagram showing a display example of a list of operation functions that can be used by a designated object as an example of a display screen on the display / input control device shown in FIG.

FIG. 8 is a schematic diagram showing an example of a display for implementing a designated operation function as an example of a display screen on the display / input control device shown in FIG.

9 is a schematic diagram showing a state in which a class is further designated by the user as an example of a display screen in the display / input control device shown in FIG. 1. FIG.

10 is a schematic diagram showing a list display example of operation functions defined in a designated class as an example of a display screen in the display / input control device shown in FIG. 1. FIG.

FIG. 11 is a schematic diagram showing an example of a specified operation function mounted as an example of a display screen on the display / input control device shown in FIG. 1.

[Explanation of symbols]

 1 class / object registration device 2 class structure information database 3 class-object related information database 4 class / object information processing device 5 display information memory 6 window management device 7 display / input control device

Claims (2)

[Claims] 1. A plurality of classes that are conceptual units that define an attribute group that can have a value when assigned to a computer storage device and an operation function group that operates the value of the attribute group are defined. Processes and processes for hierarchically associating these classes with each other in the relation of inheritance, and objects defined as entities assigned to the computer storage device are defined in these classes by modifying them with one or more defined classes. Assigning a group of attributes and a group of operation functions to the corresponding object, and
A system that supports the analysis of the structure of software that is programmed as a description of the exchange of information between the objects on the computer storage device, and the defined class of the software that is the target of the structure analysis, And a first database in which a class structure showing a dependency relationship between these classes is registered, an object name of the generated object of the software, and a concrete embodiment of the class modification of each of these objects are registered. A second database, display means for visually displaying various information registered in the first and second databases, all classes and all objects registered in the first and second databases About displaying a list of the And a display control unit of the above, and 1 related to an object appropriately designated by the user for all classes registered in the first database.
A second display for searching a plurality of classes based on the concrete aspect of the object registered in the second database and the class structure registered in the first database, and identifying and displaying them on the display means A software structure analysis support system characterized by comprising control means. 2. The system according to claim 1, further comprising: registering, in the first database, a group of operation functions of the classes designated by the user and usable by the object designated by the user. A software structure analysis support system comprising a third display control means for searching on the basis of the generated class and class structure and identifying and displaying this on the display means.