JPH0689170A - Source program analysis method for case system - Google Patents

Abstract

PURPOSE:To develop and maintain software by managing the analysis result of a source program including selective indication description as one specification information on a data base in the CASE system and presenting specification information for application of a specific selection condition to a user at the time of editing of specification information. CONSTITUTION:A primary analysis means 11 preserves primary specification information 32, which is obtained by analyzing a source progrm 21 including selective compile description without obtaining a selection condition, in a data base 31. When specification information for application of a specific selection condition is edited, an editing means 12 analyzes primary specification information 32 on the specific selection condition by a secondary analysis means 13 to obtain secondary specification information 41 and takes this information as the editing object. A specification information update means 14 reflects update contents of edited secondary specification information 41 on primary specification information in the data base 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to CASE for supporting software development and maintenance work for information processing devices.
Regarding a source program analysis method in a system, in particular CA for extracting specification information from a source program
The present invention relates to a primitive program analysis method in an SE system.

[0002]

2. Description of the Related Art A source program analysis method in a conventional CASE system is an analysis mechanism of a CASE system that analyzes a source program and extracts specification information. If the program includes a selective compilation description, it is selected in analysis. Analysis is performed by giving conditions to the user, and the specification information obtained as a result of the analysis is saved in a database for editing the specification information, or analysis is performed without specifying selection conditions and the obtained specification information is obtained. Was saved in the database and used as the target for editing the specification information.

[0003]

However, in the above-mentioned source program analysis method in the conventional CASE system, when the specification information obtained as a result of the analysis by designating the selection conditions is saved and is to be edited. Since multiple specification information for the same source program is saved in the database and is subject to editing, common specification information that does not depend on selection conditions is included in multiple specification information for the same source program. Since they are duplicated, it is left to the user to guarantee the equivalence of the contents of the common parts in the individual specification information, and the equivalence is often impaired, and the equivalence guarantee of the common parts is also made to the user. Had the drawback of being annoying.

Further, in the original program analysis method in the conventional CASE system, when the specification information obtained by the analysis without selecting the selection condition is stored and edited, the original program is decoded as the specification information. In many cases, insufficient information was available to support people, and the reality was that they could not realize sufficient support functions.

An object of the present invention is to save specification information obtained by analysis without designating selection conditions in a database so that duplicate information is not retained in the database and analysis is performed by designating selection conditions during editing. By doing so, it is possible to edit with the specification information sufficient to support the decoding of the source program, and the specifications on the database considering the part that depends on the selection condition and the part that does not depend on the selection condition in the updated specification information. An object of the present invention is to provide a source program analysis method in a CASE system that solves the conventional drawbacks by updating information.

[0006]

A source program analysis method in a CASE system of the present invention analyzes a source program in order to hold software design information in a database and support software development and maintenance work. In the source program analysis method in the CASE system having the reverse engineering function that supports the construction of the upper specification such as the setting document by registering the software specification information in the database, the selection compilation description (#ifdef etc. in C language) is included. Analyze without obtaining the selection conditions of the source program, do not analyze the part that can be analyzed by giving the selection conditions, save as unanalyzed in the database as specification information and analyze the analyzable parts Together with the specification information obtained by As a primary analysis means for storing in the database, an editing means for decoding the source program while referring to the specification information registered in the database, and adding the upper specification to update the specification information, and the editing means Secondary specification information, which is completed specification information, is entered by inputting the primary specification information and selection conditions that are started and stored in the database, and analyze the part that depends on the selection conditions that the primary analysis means could not analyze. Secondary analysis means for generating and returning to the editing means, and inputting the secondary specification information started by the editing means, completed by the secondary analyzing means, and updated by the editing means, The part updated by is classified into the part that does not depend on the selection condition and the part that depends on it, and according to the correspondence relationship with the corresponding part of the primary specification information. It is constituted by a specification information updating means for updating the primary specification information Te.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a source program analysis method in the CASE system of the present invention. As shown in FIG. 1, the source program analysis method in the CASE system of the present embodiment is composed of a primary analysis means 11, an editing means 12, a secondary analysis means 13, and a specification information updating means 14, a source program 21, a database 31. , Primary specification information 32, secondary specification information 41,
It contains the selection condition 51. The solid line arrow in FIG. 1 indicates the starting relationship, and the broken line arrow indicates the reference setting relationship.

FIG. 2 is a diagram showing an example of the primary specification information 32. As shown in FIG. 2, the primary specification information 32 includes text information 32-1 holding information about processing contents of a program, data definition information 32-2 holding definition information about definition of data, definition information about definition of macro. Is defined by macro definition information 32-3.

The text information 32-1 is a set of texts 32-1-1, 32-1-i holding information about unit processes constituting processes executed by the program.
Each of the texts 32-1-1 to 32-1-i is composed of a type of the text, a text id for uniquely identifying the text, and processing content information holding information about the content of unit processing. It Note that the processing content information is incomplete for items that depend on the selection conditions.

The data definition information 32-2 holds definition information 32-2-1, ...
It is a set of 32-2-j. Each definition information 32-2-1
.. 32-2-j is composed of a definition id for uniquely identifying the definition information and definition content information for holding the name, type, structure, etc. of the data.

Further, the macro definition information 32-3 is the definition information 32-3-1 for holding information on the macro definition,
~ 32-3-k is a set. Each definition information 32-3-
Each of 1 to 32-3-k is composed of a definition id for uniquely identifying the definition information and definition content information holding a macro name, a macro expansion rule, and the like.

FIG. 3 is a diagram showing an example of the structure of the secondary specification information 1. As shown in FIG. 3, the secondary specification information 41 is
Text information 41 that is the same information as the primary specification information 32
-1, data definition information 41-2, macro definition information 41-
It is composed of three. The difference from the primary specification information 32 of the secondary specification information 41 is that it is a subset of the primary specification information 32 when a specific selection condition is given, and the text processing content information in the text information 41-1 is That is to include the completed one.

In this embodiment, the source program 21 is C
It is supposed to be described as a language. First, the primary analysis means 11 selects a selection instruction statement (here, #ifdef statement, #else) for performing the C language selective compilation description function.
Statements, and #endif statements only) are input and analyzed, and the primary specification information 32 is output to the database 31. The primary analysis means 11 first analyzes each line of the source program 21 and converts it into an internal representation with a token.

Next, the token string is analyzed and #ifde
f sentence, #else sentence, #endif sentence are detected, and #if
def statement and #else statement, #else statement and #endif
Statement, #ifdef statement and #en when there is no #else statement
The lines appearing between the dif sentences (hereinafter, referred to as “between selection instruction sentences”) and the lines not appearing are recognized. Then, the token string of the line other than the selection instruction sentence is analyzed to recognize the C language sentence. As a result, the texts 32-1-1 to 32-1-i are generated in the text information 32-1 from the obtained token string forming each sentence and the token string forming the selection instruction sentence.

A text id that uniquely identifies the text is added to each of the texts 32-1-1 and 32-1-i, and the value 1 is selected as the text type for the token string forming the selection directive. A value other than 2 for the type of text corresponding to a token string that forms a sentence that appears between selection directives other than a directive text, and a text that corresponds to a token string that forms a sentence that does not appear between selection directives 3 for the type of
Is set to the type of text for the token string that could not be recognized as a sentence.

If the sentence is a data definition sentence, it is further analyzed to collect data definition contents information, and the definition information 32-2-1 to the definition information 32 are included in the data definition information 32-2.
-2-i is generated, and the processing content information of the text in the text information 32-1 holds the definition id of the element in the corresponding data definition information 32-2.

If the statement is a macro definition statement, it is further analyzed to collect macro definition content information and macro definition information 3
2-3, definition information 32-3-1 to definition information 32-
3-k is generated, and the corresponding macro definition information 3 is included in the processing content information of the text in the text information 32-1.
Holds the definition id of the element in 2-3.

The text processing content information for the other sentences holds a token string constituting the sentence. Since no selection condition is given, the names representing the data reference and macro reference in this token string are defined by the definition information 32-2-1, 32-32 in the corresponding data definition information 32-2.
2-j and definition information 32-in the macro definition information 32-3
The correspondence with 3-1 to 32-3-k remains unsolved.

Then, the editing means 12 uses the database 3
1 provides a means for the user to refer to, update, and add a description to the specification information that becomes effective when a specific selection condition is given to the primary specification information 32 stored in 1. , Support for constructing detailed design specification level specification information from source program level specification information extracted from the source program 21.

Further, the editing means 12 is a chart showing the processing contents of the source program 21 when a specific selection condition is given, data defined in the source program 21,
In order to know the definition information and data of the macro, and the reference relationship of the macro on the chart, the secondary analysis means 13 is activated to obtain the secondary specification information 41.

Further, the editing means 12 is the secondary analysis means 1
According to the user's instruction based on the secondary specification information 41 obtained from No. 3, reference and update of charts, addition of explanation for processing, reference and update of definition information of data and macro, addition of those explanations, chart Perform operations such as searching the above data and macro reference positions, and if necessary, specify secondary specification information 4
Update 1.

When a sentence is added on the chart, the text having the type value of 5 is added to the text information 41-1 in the secondary specification information 41. When an existing sentence is updated on the chart, the corresponding texts 41-1-1 to 41-41 in the text information 41-1 in the secondary specification information 41 are displayed.
The type of -1-x is changed to the value 5, and the processing content information is changed to an incomplete state in which the sentence on the changed chart is tokenized.

When the sentence on the chart is deleted, any of the corresponding texts 41-1-1 and 41-1-x of the text information 41-1 in the secondary specification information 41 is deleted. . When one or more sentences on the chart are grouped and a description for the group is added, the text information for the one or more grouped sentences of the text information 41-1 in the secondary specification information 41 is displayed. Immediately before, a text whose type value is 6 is added.

When an explanation is added to the definition information of data or macro, the definition information 41-2-1 to 4 in the corresponding data definition information 41-2 and macro definition information 41-3.
When the description is added to the definition content information of 1-2-y, 41-3-1 and 41-3-z and the definition content is updated,
Interpret the update contents and update the definition contents information.

Data and macro definitions are added and deleted on the chart, and the interpretation and definition information are added and deleted by the specification information updating means 14. In addition, the editing means 12 controls the specification information changing means 14 in order to reflect the changed contents of the secondary specification information 41 caused by the update of the user, the addition of the explanation, etc. in the primary specification information 32 and to save it in the database 31. to start.

Next, the secondary analysis means 13 is the editing means 12
When the selection condition 51 and the primary specification information 32 from the database 31 are input, the specification information that becomes valid when the selection condition 51 is specified is extracted from the primary specification information to generate the secondary specification information 41. The secondary analysis means 13
The text corresponding to the selection directive in the text information 32-1 of the primary specification information 32 is evaluated by the selection condition 51, and the selected text is determined.

The processing content information of the selected text is analyzed to complete the information that could not be completed by the primary analysis means 11, and the secondary specification information 41 as text information 41-1.
Output in. For the analysis of the selected text, re-analysis of the text whose type value is 4, that is, the text that could not be recognized as a sentence, and data reference or macro in the processing content information of the text whose type value is 2 or 3 The definition information in the data definition information 32-2 and the macro definition information 32-3 corresponding to the name mark indicating the reference is determined.

The text that could not be recognized as a sentence is re-analyzed by selecting the condition 5 which cannot be recognized as a sentence because one sentence is divided by the selection instruction sentence.
This is because when 1 is given and a valid text is selected, it can be recognized as a sentence. Further, the definition information corresponding to the referenced name tag is determined by this means because the definition information that is valid by the selection condition 51 is selected and the definition information corresponding to the referenced name tag is selected. This is because it is possible to uniquely determine

Therefore, the secondary analysis means 13 defines information 32-1-1, ~ 32-2-j, 32-3-1, ~ in the data definition information 32-2 and macro definition information 32-3. 32
From -3-k, the definition information that becomes effective when the selection condition 51 is given is selected and output as the data definition information 41-2 and the macro definition information 41-3 in the secondary specification information 41. . The valid definition information is the text information 32-
It is determined by the definition information id set in the text processing content information corresponding to the data definition or macro definition of the text selected from 1.

Further, the specification information updating means 14 inputs the secondary specification information 41 updated by the editing means 12 and the primary specification information 32 in the database 31 to add the secondary specification information 41, The changed and deleted information is reflected in the information in the corresponding primary specification information 32. The text information 32-1 is updated by associating the text information 41-1 and the text information 32-1 with the text id of each text. At that time, the text information 41
The processing content information of each text in -1 in the completed state is returned to the incomplete state.

To update the data definition information 32-2 and the macro definition information 32-3, the data definition information 32-2 and the data definition information 41-2, the macro definition information 32-3 and the macro definition information 41-3 are defined. This is done by taking correspondence with the definition id of the information. Then, with respect to the addition, change, or deletion of the sentence relating to the data definition or macro definition in the text information 41-1, addition, change, or deletion of the corresponding data definition information 32-2 or macro definition information 32-3 is also performed. Done.

Further, the specification information updating means 14 saves the update result of the part that does not depend on the selection condition when updating the primary specification information 32 for each selection condition used when creating the secondary specification information 41. However, it is also possible to give different meanings to each part that does not depend on the selection condition.

[0033]

As described above, the CASE of the present invention
The source program analysis method in the system saves the duplicated information in the database by saving the specification information obtained by the analysis without specifying the selection condition in the database. By doing so, it is possible to edit with the specification information sufficient to support the decoding of the source program, and consider the part of the updated specification information that depends on the selection conditions and the part that does not depend on the selection conditions. It has an effect that the specification information can be updated.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a source program analysis method in a CASE system of the present invention.

FIG. 2 is a diagram showing an example of a configuration of primary specification information 32.

FIG. 3 is a diagram showing an example of a configuration of secondary specification information 41.

[Explanation of symbols]

 11 primary analysis means 12 editing means 13 secondary analysis means 14 specification information updating means 21 source program 31 database 32 primary specification information 41 secondary specification information 51 selection conditions

Claims (1)

[Claims] 1. In order to maintain software design information in a database and to support software development and maintenance work, a source program is analyzed, software specification information is registered in the database, and a setting sheet, etc. In the source program analysis method in the CASE system having the reverse engineering function that supports the construction of the high-level specification, the source program including the selective compilation description (#ifdef in C language) is analyzed without obtaining the source selection conditions, The part that can be analyzed by being given is not analyzed, it is saved in the database as specification information as it is unanalyzed, and the database as primary specification information together with the specification information obtained by analyzing the analyzable part The primary analysis method to be stored in the Editing the original program while referring to the information, and adding the upper specification to update the specification information, editing means, and the primary specification information and selection conditions that are started from the editing means and stored in the database. Secondary analysis means for inputting, analyzing the part depending on the selection condition that the primary analysis means could not analyze, generating secondary specification information which is completed specification information and returning it to the editing means, The secondary specification information which is started by the editing means, completed by the secondary analysis means, and updated by the editing means is input, and the portion updated by the editing means does not depend on the selection condition and depends on the selection condition. And a specification information updating unit for updating the primary specification information according to the correspondence relationship with the corresponding part of the primary specification information. Primitive program analysis method in SE system.