JPS63204326A - Data processor - Google Patents

Abstract

PURPOSE:To easily rexcognize whole structure when a program text is edited, by providing a means which analyzes the hierarchical structure of a programming language, and a means which displays the layout of the hierarchical structure, and scrolling a picture at every hierarchical unit. CONSTITUTION:A text data is read in a buffer 17 for the text data from an external memory device 13. Next, the content of the buffer 17 is read in by a structure analysis control part 20, and after the structure being analyzed, the bit of information of analysis is written on a buffer 19 for structure analysis. When a request to display the layout is inputted from a keyboard 16, the content of the buffer 19 for the structure analysis is read, and the structure of a text is layout-displayed, and the movement of a cursor is performed on layout display, then, the picture in which the text is displayed is scrolled. Thus, it is possible to recognize the whole structure easily by displaying the layout.

Description

TECHNICAL FIELD The present invention relates to a data processing device with a text editing function, and more particularly to a data processing device that can improve the operability of an editor and the efficiency of editing.

Prior Art A conventional data processing device, for example, as shown in FIG.
CRTll, display control section 112, text data buffer 117, editor control section 114, external storage device 1
13, keyboard 116, and keyboard control unit 11
5.

Regarding the editing operation of this data processing device, first, text data is read from an external storage device 113 such as a hard disk onto the text data buffer 117, and changes such as insertion and deletion of characters are made to the data.

In this case, the only part that the operator can change is the CRT display part indicated by the dotted line in the text data on the text data buffer 117, as shown in FIG. I need to scroll the screen.

In other words, it is necessary to move the display portion of the CRT 126 over the text data.

Also, in this case, the text editor has no knowledge of the structure of the program.

Regarding the structure of this program, when writing a program, if there are five conditional statements, return statements, etc., the processing to be performed differs depending on the conditions, so the flow of the program is divided into several parts. Therefore, the processing within the conditional statement can be considered to be separate from the previous structure.

Furthermore, as shown in Figure 12, if a conditional statement contains another conditional statement, the structure of the program becomes nested and hierarchical, and as the number of conditional statements increases, the structure of the program becomes hierarchical. The level gets bigger.

In addition, regarding the operation by hierarchy in this case, as shown in Figure 13, variables are declared (1301) by the operation at hierarchy level 1, and the maximum number of lines (max) that has appeared so far is set to 0 ( 1302), find the longest line 1303), and display the longest line (1304).

In this hierarchy level 1 operation, when searching for the longest line (
1303) is shown at hierarchy level 2,
Set the line length to the current line (l a n) 1305
) and set the next line (1306).

Determine whether len>O or not (1307). If the result of this determination is len>O, update the maximum row (1308)
).

Further, in the operation at hierarchy level 1, the conditions for displaying the longest line (1304) are also shown at hierarchy level 2, and if max>O (1309), the maximum line is displayed (1310).

Furthermore, at hierarchy level 2, the condition for updating the maximum row (1308) is shown at hierarchy level 3: if lan)max (1311).

It recognizes max:len (1312) and copies the current line to the display buffer (1313).

In this way, when editing program text using conventional data processing devices, the display screen is limited, so when editing large program text, it is difficult to grasp the overall flow and current position. there were.

Also, when editing a program with a one-layer structure, ・
It was difficult to figure out which level you were currently in. Furthermore, text movement is done by line, column, or screen, and it is not possible to move by program level, so you can move text to the desired position. There was a problem that it took a long time to complete the editing process and the editing efficiency was poor.

An object of the present invention is to provide a data processing device that can improve the above-mentioned problems, easily understand the overall structure when editing program text, and improve work efficiency. Our goal is to provide the following.

Configuration In order to achieve the above object, the data processing device of the present invention comprises:
When editing program text, there is a means to automatically analyze the hierarchical structure of the programming language (keyword registration section, structure analysis buffer).

It is characterized by comprising a structure analysis control section) and means for displaying a hierarchical layout (layout display control section), and scrolling the screen in hierarchical units.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a data processing device in one embodiment of the present invention.

The data processing device of this embodiment includes a CRTII1 display control section 12, an external storage device 13, an editor control section 14. Keyboard control unit 15, keyboard 16° text data buffer 17, keyword registration unit 18, structure analysis buffer 19. It includes a structural analysis control section 20 and a layout display control section 21.

When the data processing device of this embodiment is started, first, text data is read from the external storage device 13 into the text data buffer 17. Note that it is not loaded when creating new data.

Next, the structure analysis control unit 20 reads the contents of the text data buffer 17 and writes the information into the structure analysis buffer 19 after analyzing the structure.

Also, when a request for layout display is input from the keyboard 16, the contents of the structure analysis buffer 19 are read,
The text structure is displayed in a layout, and the text display screen is scrolled by moving the cursor on the layout display.

FIG. 3 is an explanatory diagram of keyword registration in one embodiment of the present invention.

As shown in FIG. 1, the keyword registration unit 18 uses a programming language to be subjected to structural analysis.

Register keywords that have a hierarchical structure.

For example, when analyzing the C language, words that are keywords that have a hierarchical structure in the C language are registered as shown in FIG. 3(a).

Note that the keywords are if and for.

There are six words: while, do, (,), and φ is placed at the end of these keywords. Further, the first keyword and the keyword before φ indicate the beginning and end of a complex sentence, respectively.

Regarding the registration procedure, when the operator calls up the keyword registration program, a screen as shown in FIG. 3(b) is displayed and the key waits for human input.

Note that operation 2 indicates the end of keyword registration, and BTAB
indicates returning to the previous item, and operation 1 indicates proceeding to the next item.

The operator moves the cursor to first select the start of the hierarchy,
and a keyword indicating the end, and then register other keywords to be used when performing a high-speed search in hierarchical units using the layout display.

Furthermore, when the end key (operation 2 key) is input after confirming that the necessary keywords have been registered, those keywords are stored in the keyword registration section 18 as shown in (a).

FIG. 4 is an explanatory diagram of a structure analysis buffer in one embodiment of the present invention.

The structure analysis buffer 19 in this embodiment includes a plurality of buffers 1 to n, and each buffer has a.

Its hierarchy level, keyword, starting line of the hierarchy, and ending line are stored.

The structure analysis buffer 19 also includes an external storage device 13.
When the text data is read from , and furthermore, the keyword registration in the keyword registration section 18 is completed, the stored information is updated by the structure analysis control section 20 every time the text data buffer 17 is updated.

FIG. 2 is a configuration diagram of a structural analysis control section in one embodiment of the present invention.

The structural analysis control unit 20 in this embodiment includes a comparison unit 22,
Line number counter 23. The keyword registration unit 1 includes a buffer number counter 24 and a hierarchy level counter 25.
8, is connected to the structure analysis buffer 19 and the text data buffer 17, and operates according to instructions from the CPU.

The structural analysis control unit 20 reads the text data read into the text data buffer 17, performs structural analysis when the keyword registration is completed, and writes the information after the structural analysis into the structural analysis buffer 19.
Every time the text data buffer 17 is updated, the information in the structure analysis buffer 19 is updated.

FIG. 8 is a structural analysis flowchart of a data processing device in one embodiment of the present invention.

In the data processing apparatus of this embodiment, for example, when analyzing the C language, the structure analysis control unit 20 first initializes all the structure analysis buffers 19 in response to a start instruction from the CPU, and , line number (LIN
Initialize E)! (801-804).

Next, one line is fetched from the text data buffer 17 into the comparison unit 22, and it is determined whether that line is the end of the hierarchy (805), and if it is not the end, it is further determined whether the line number is the beginning of the function. It is determined whether or not (807).

If that line is the start of a function, set the hierarchy level to 8.
08), it is determined whether there is a keyword or function name in that line (809).

If there is no keyword or function name, the line number counter 23 is incremented by one (806), and the next line is fetched from the text data buffer 17 again (806).
05).

More keywords or function names, if any.

It is determined whether the keyword 1)' indicating the end of the hierarchy is present in the line (810).

If there is a keyword indicating the end of the hierarchy, the buffer number counter 24 is already pointing to buffers 1 to n that are one count ahead, so the value of the line number counter 23 is decreased by 1 (811), and the line number counter 23' is pointing to the next buffer. Set the value of the line number counter 23 in buffers 1 to n (8
12) Decrease the value of the hierarchy level counter 25 by 1 (
813).

In this way, one hierarchical level, a keyword, a starting line number, and an ending line number are set in one buffer of the structure analysis buffer 19.

Also, if there is a keyword other than the keyword indicating the end of the hierarchy in the imported line, the hierarchy level counter 2
5 by 1 (814), then set the values of the line number counter 23 and hierarchy level counter 25 in buffers 1 to n that match the value of the buffer number counter 24, and then set the matched keyword itself. (
815).

Furthermore, to select the next buffer 1-n.

Increment the buffer number counter 24 by 1 (8
16).

When these operations are completed, the line number counter 23 is incremented by one (806), and the next line is taken in from the text data buffer 17 again.

In this way, the above operations are repeated until the text data buffer 17 becomes empty.

Furthermore, when the text data buffer 17 becomes empty,
The structural analysis control unit 20 notifies the CPU of this,
It waits for instructions from the CPU.

In this embodiment, in order to simplify the structure analysis process and perform it at high speed, the following rules are provided in the grammar of the program text.

(i) A compound sentence follows a keyword that has a hierarchical structure, and ``('' and 1)'' indicating the beginning and end of a compound sentence are not written on the same line.

(it) At the beginning of a function, separate the function name and '(' on each line.

Therefore, when checking whether a line is the beginning of a function, first check the string of the line, and check if the string contains ′(′ and ′)′, and if it is at the end of the line. ) in the semicolon, the line is recognized as the beginning of a function.

FIG. 5 is a layout display example diagram in one embodiment of the present invention.

The layout display control unit 21 in this embodiment takes out information from the structure analysis buffer 19 and displays it in the display control unit 12.
A one-layer structure is displayed on the main screen of the CRT screen via the CRT screen. In addition, the function keys on the keyboard 16 (
(not shown) is pressed.

The layout screen is displayed and control of the cursor is transferred to the layout screen.

The layout screen displays keywords for each hierarchy, and also displays the hierarchy level after a colon (:). The beginning of one line is shifted according to this hierarchy level.

Further, a cursor B is displayed on the layout screen, indicating the hierarchical position corresponding to the position of the cursor A on the main screen, and the corresponding line blinks.

Furthermore, cursor B can perform up and down movements in the current hierarchy and left and right movements to move through the hierarchy.

For example, if you move cursor B upwards on level 1, which is the farthest left on the layout screen, it will immediately move to '(' at the beginning of the main() function, and if you move it downwards, it will immediately move to '(') at the beginning of the main() function.
Immediately move to ゛ )′ at the end of the in() function.

Furthermore, when the cursor B is moved to the second level and moved upward, it is moved to the for statement on the main screen, and when it is moved downward, it is moved to the beginning of the if statement next to the for statement on the main screen.

The layout screen is displayed by pressing a function key (not shown) on the keyboard 16, and when cursors A and B move on the layout screen and the return key (not shown) is pressed, the screen scrolls to that level. finish.

FIG. 6 is an example of text data in one embodiment of the present invention, FIG. 7 is an example of a CRT screen in one embodiment of the present invention, and FIG. 9 is an operation of the layout display control section in one embodiment of the present invention. It is a flowchart.

Regarding the layout display in this embodiment, when the layout display is specified by the function key on the keyboard 16 as shown in FIG. The text screen and layout screen are displayed.

In this case, the text data buffer 1 as shown in Figure 6
7, search for text data corresponding to the layer where cursor B is currently located, and select up to 1 layer from the current layer.
Display the 0th layer (901).

Further, the cursor B is set to that layer (902), and the current layer level is set to the layer level counter 25 (903).

Further, when a cursor movement key (not shown) on the keyboard 16 is pressed (904), it is checked whether a hierarchy exists in the direction of movement (905), and then.

Check whether the movement is in the left/right (hierarchy level) direction (906
).

If the movement is in the left/right (hierarchy level) direction, the cursor B is set at that hierarchy position (907), and the hierarchy level is set in the hierarchy level counter 25 (908).

If the movement is not in the left/right (hierarchy level) direction, search for buffers 1 to n in the structure analysis buffer 19 that are closest in the specified direction and have the same hierarchy level (909), to the hierarchy position where cursor B is found. (910) and check whether a return key (not shown) has been pressed (911).
).

When the return key is pressed, buffer 1 of the level found
Scroll the text screen to the starting line of ~n (9
12).

For example, as shown in Figure 7, if you move cursor B to '(' on the second line on the layout screen and press the return key, you can move from layer position 61 to layer position 63 on the text data in Figure 6. It scrolls and the layout display ends.

Similarly, when the cursor B is moved to the fifth line g x fI on the layout screen and the return key is pressed, the cursor B is scrolled to the hierarchical position 62 on the text data.

In this way, by moving the cursor B on the layout screen, information is sent to the editor control unit 14 to scroll the screen to the top of the hierarchy to which the cursor B is moved.

Effects According to the present invention, when editing a large amount of program text, the overall structure can be easily grasped by displaying the layout.

Additionally, structural units and hierarchical levels can be recognized on the layout display, and editing efficiency can be improved because the desired structure and hierarchy can be easily moved by moving the cursor on the layout screen. It is possible.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a data processing device in an embodiment of the present invention, Fig. 2 is a block diagram of a structural analysis control unit in an embodiment of the present invention, and Fig. 3 is a keyword registration diagram in an embodiment of the present invention. FIG. 4 is an explanatory diagram of a structure analysis buffer in an embodiment of the present invention, FIG. 5 is an illustration of a layout display example in an embodiment of the present invention, and FIG. Figure 7 is a diagram showing an example of text data, Figure 7 is a diagram showing an example of a CRT screen in an embodiment of the present invention, Figure 8 is a structural analysis flowchart of a data processing device in an embodiment of the present invention, and Figure 9 is an example of an embodiment of the present invention. 10 is a block diagram of a conventional data processing device, FIG. 11 is an explanatory diagram of the display part on a CRT screen in a conventional data processing device, and FIG. 12 is a program hierarchy level. FIG. 13 is an explanatory diagram of the operation of a program having a hierarchical structure. 1 to n: Buffer ti 1, 111: CRT, 12
゜112=display control unit, 13,113: external storage device. 14, 114: Editor control section, 15, 115: Keyboard control section, 16, 116: Keyboard. 17.117: Text data buffer, 18: Keyword registration section', 19: Structure analysis buffer. 20: Structural analysis control section, 21 Nilayaud display control section,
22: Comparison unit, 23: Line number counter, 24: Buffer number counter, 25: Hierarchical level counter, 61 to 63
: Hierarchy position, A, B: Cursor. Figure 3 (IL) Figure 4 ε8 Figure 6 Figure 7 l O Figure

Claims (1)

[Claims] (1) In a data processing device that is equipped with an input device and a display device and has a text data editing function, when editing program text, a means for automatically analyzing the hierarchical structure of a programming language, and a means for automatically analyzing the hierarchical structure of the programming language are provided. A data processing device comprising means for displaying a layout and scrolling the screen in hierarchical units.