JPH0594296A - Data area constitution list display system - Google Patents

Abstract

PURPOSE:To visually grasp the data area constitution list of a source program. CONSTITUTION:A command analyzing means 3 recognizes an input file name instructed by a command 7. A data area constitution list generating means 4 inputs an input source file 1, which has the recognized file name, described in a PASCAL language and executes a processing to generate internal data. A data area constitution list editing means 5 edits a processed result as a data area constitution list. A data area constitution list output means 6 outputs the data area constitution list to an output list 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a global variable, a local variable and a parameter declared at the head of a procedure / function in a source program written in the PASCAL language. , Which global variable is at which position in memory,
A tabular display of the allocation status of global variables, local variables and parameters, showing how much size was allocated and where and how much local variables and parameters were allocated on the stack. The present invention relates to a data area configuration list display method in the PASCAL language that is enabled.

[0002]

2. Description of the Related Art Conventionally, in the case of generating an allocation state of global variables, local variables declared in a variable declaration part of a source program written in the PASCAL language, and parameters declared in a procedure / function head, The type and size of each global variable, and the allocation position of the global variable are indicated by the offset from the start position in memory, and the type and size of the local variables and parameters and the allocation position are indicated by the offset from the frame pointer in the stack. The data area structure list is displayed in such a format.

[0003]

Conventionally, the allocation state of the global variable, local variable declared in the variable declaration part of the source program written in the PASCAL language, and the data area of the parameter declared in the procedure / function head. When displaying, the type and size of each global variable and the allocation position of the global variable are shown as an offset from the start position in memory, and the type and size of the local variable and parameter and the allocation position are stored in the stack. Since the data area configuration list can be displayed only in the format indicated by the offset from the frame pointer, there is a drawback that it is difficult to visually grasp the allocation state.

An object of the present invention is to determine the allocation state of the data area of the global variables, local variables, and parameters declared in the procedure / function head declared in the variable declaration part of the source program. Displays the type and size, and variable and parameter allocation positions in a table format, generates the data area allocation status during source program development, and allocates each variable and parameter when debugging the program. Is to provide a system that can be visually grasped and facilitates the development of large-scale programs.

[0005]

A first invention is a PASC.
In the data area structure list display method for the source program described in the AL language, the command analysis means for analyzing the name of the input source file designated by the command, and the source program designated by the name are input and predetermined. A data area configuration list generating means for generating internal data of an item, a data area configuration list editing means for editing the data area configuration list using the generated internal data, and an edited data area configuration list are output. And a data area configuration list output means.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a data area configuration list display method according to the present invention.

In the figure, the data area configuration list processing unit 2
Recognizes the input file name designated by the command 7 by the command analysis means 3, inputs the input source file 1 having the recognized file name and described in the PASCAL language, and the data area configuration list generation means 4 inputs internal data. Is generated, the result processed by the data area configuration list editing means 5 is edited, and the result is output to the output list 8 by the data area configuration list output means 6.

FIG. 2 is a diagram showing an example of the input source program, and FIGS. 3 to 8 are generated by the data area configuration list generation means 4 in the data area configuration list processing unit 2 of the data area configuration list display method. 3 is an explanatory diagram of an internal data format. FIG. The internal data generated by the data area structure list generation means 4 includes the global data area structure list table of FIG. 3, the local data area structure list table of the function effect of FIG. 4, and the procedure che of FIG.
cker local data area configuration list table, type name registration table of FIG. 6, array type range table of FIG. 7, and array type data configuration list table of FIG.

In the global data area configuration list table (FIG. 3), all variables declared in the global level variable declaration section input from the input source program (FIG. 2) are stored in the "data" table of the global data area configuration list table. The size of the variable and the position in memory are registered in the fields of "name" and "size" and "offset", respectively. At this time, the attribute of this variable is set to “n” in the type name registration table (FIG. 6).
It is registered in the field "ame", and a pointer is associated in the field "Pointer to type name registration table" of the global data area configuration list table (Fig. 3). If the variable type is an array type, A flag indicating whether or not the array type data is packed is added to the "Listed or not packed" flag in the array type data structure list table (FIG. 8).
Register in the field. Then, the range of the array type variable is registered in the field "range" of the array type range table (FIG. 7), and the range of the array type data configuration list table (FIG. 8) is changed to the "array type range table". A pointer is associated with a field called "pointer". Further, the type name of the array type data is registered in the type name registration table (FIG. 6), and the type name registration table showing the type name of one element of the array type data configuration list table (FIG. 8) is registered. A pointer is associated with a field called "pointer". Finally, when the array type data is multidimensional, the value indicating the index of the array type data configuration list table (FIG. 8) showing the configuration of the array data of the next dimension is set to the array type configuration list. It is set in a field of the table (FIG. 8) "pointer to configuration list table of array type data indicating configuration information of next dimension". Configuration list table of array type data registered there (Fig. 8)
To the field "Pointer to the configuration list table of array type data" of the global data area configuration list table (FIG. 3) to associate them. Furthermore, in the local data area structure list table of the function effect (FIG. 4), the function name and parameters declared in the function head of the function effect input from the input source program and the local level variable declaration part of the function effect are described. All declared variables are "data names" in the local data area configuration list table (Fig. 5) of the function effect.
Field and the size of the parameter and variable and the position in the stack frame at the same time as the function effe.
It is registered in the "size" and "offset" fields of the ct local data area configuration list table (FIG. 4), respectively. The method of registering data in the other fields is the same as the method of registering in the global data area configuration list table (FIG. 3). Also, the procedure checker
The local data area configuration list table (Fig. 5) of
Procedure check input from the input source program
Parameters declared in the procedure head of er and procedure ch
All variables declared in the local level variable declaration part of ecker are registered in the "data name" field, and at the same time, the size of the parameter or variable and its position in the stack frame are stored in the "size" and "offset" fields. Register each. The method of registering data in the other fields is the same as the method of registering in the global data area configuration list table (FIG. 3).

FIG. 9 shows an example of an output list output as a result of inputting the input source program (FIG. 2) to the data area configuration list processing unit 2.

[0011]

As described above, according to the present invention, the PA
When generating the data area structure list of the source program written in SCAL language, the allocation status of the variable data area declared in the global-level variable declaration part of the source program, or the declaration of the procedure / function head Because the allocation status in the stack frame of the variables declared in the variable declaration section at the local level of the parameter and procedure / function can be displayed in the form of table, the type and size of each variable and the allocation position of the variable can be displayed. , It is easy to develop a large-scale program because the allocation status of the data area is generated during the development of the source program and the allocation status of each variable can be visually grasped when debugging the program. There is an effect of becoming.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a data area configuration list display method according to the present invention.

FIG. 2 is a diagram showing an example of an input source program of this embodiment.

FIG. 3 is a diagram showing a global data area configuration list table according to the present embodiment.

FIG. 4 is a diagram showing a local data area configuration list table of a function effect of the present embodiment.

FIG. 5 is a diagram showing a local data area configuration list table of a procedure checker of the present embodiment.

FIG. 6 is a diagram showing a model name registration table of the present embodiment.

FIG. 7 is a diagram showing an array type range table of the present embodiment.

FIG. 8 is a diagram showing a configuration list table of array type data according to the present embodiment.

FIG. 9 is a diagram showing an example of an output list of this embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 input source file 2 data area structure list processing unit 3 command analysis unit 4 data area structure list generation unit 5 data area structure list editing unit 6 data area structure list output unit 7 command 8 output list

Claims (1)

[Claims] 1. A data area structure list display method for a source program written in PASCAL language,
Command analysis means for analyzing the name of the input source file designated by the command, and data area configuration list generation means for inputting the source program designated by the name and generating internal data of predetermined items,
Data comprising data area configuration list editing means for editing a data area configuration list using the generated internal data, and data area configuration list output means for outputting the edited data area configuration list Area configuration list display method.