The ABAP Source Code Editor in Software

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The ABAP Source Code Editor
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Although the naming can become confusing, the difference between the ABAP editor as the workbench tool and the ABAP editor as the source code editor should be clear. There are several ways to reach the ABAP source code editor: 214
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The ABAP Source Code Editor From the ABAP editor initial screen, select the Source code radio button and then choose either the Display or Change push button when the program exists. From the Program Attributes screen, click on the Source code button on the application toolbar once the attributes were saved. Double click on a program when displaying objects from the repository browser or related workbench tool. Figure 7 14 shows the source code editor screen.
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Figure 7 14: ABAP source code editor screen. The Source Code Editor Interface The source code editor interface is made up of a normal application and a standard toolbar plus a work area where you actually edit your program code. The menu bar on this screen contains six standard menu options including all the functionality within the ABAP source code editor. The menu bar options are as follows: Program (or the specific object being manipulated by the editor). This contains functions affecting the overall object (program), such as generate, check, save, execute, and so forth. Edit. Under this menu, the system includes internal functions related to editing functions, such as the insert statement, cut, copy, insert to/from buffer, and search/replace. Goto. Options under the Goto menu are for calling other ABAP editor maintenance functions, such as attributes, text elements, messages, documentation, variants, as well as navigation functions such as markers or navigation stack. Utilities. This includes access to other workbench utilities such as the data browser, workbench organizer, debugging tools, and so on. Block/buffer. This menu includes external editing functions related with the windows interface such as the clipboard, comment insertion facilities, and so on. Settings. This menu allows for defining initial editor settings. There are several functions to set up the editor working environment: Editor working mode. You can work in PC Mode, similar to a PC word processor, PC Mode with line numbers, which additionally includes numbered lines and is the default option, and Command mode, which emulates the editor functionalities of the SAP R/2 system. Compression logic. Allows creation of a program overview organized by logical blocks. When users start the editor, all blocks are expanded; individual blocks can then be expanded or compressed using 215
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The ABAP Source Code Editor the corresponding icons. The blocks are defined starting with a comment line beginning *{, and ended with a comment line beginning with *}. Display mode. You can decide to work with upper or lowercase. If you choose to work with lowercase, everything will appear in lowercase except the literals and the comments. Users can also decide to work with uppercase only for ABAP keywords. To define these modes, from the editor screen, select Settings Edit Mode, and make your selections. Basic Editing Concepts The SAP R/3 code editor works very similarly to any text processor or program editor. To write code, just place your cursor where you want to enter the text and write the program code. To go to the next line, press the Return key. You can move around the screen using the typical mouse functions or the arrow keys on the keyboard or the scrolling icons from the R/3 windows standard toolbar. Lines, Blocks, and Buffers The editor offers several facilities for working with lines, blocks (a group of contiguous lines), and buffers (intermediate copy of program code which can be transferred). To work with either lines, blocks, or buffers, you have to select the line or groups of lines to manage. There are two methods to select lines: Interactively, by double clicking on the first line to select and then on the last one. The selected line or block switches color to reverse video. Using the available Edit menu options or function keys, for example, by positioning the cursor on the first line of the block and choosing Edit Select from the menu. Then repeat the operation for the last line of the block. When editing code, the system makes available some facilities for copying and pasting code between programs, sessions, and even between systems. These are commonly known as buffers or clipboards. The ABAP editor has five types of buffers or clipboards: the session buffer, the system buffer, and the clipboards X, Y, and Z. The session buffer is used to perform cut and paste within the same editor session in a single system. Once you leave the editor, the buffer contents are lost. The clipboards X, Y, and Z are used for performing cut and paste operations between different sessions in the same SAP system. There is no difference among them; it's just a matter of having more than one buffer. The system buffer is used for doing cut and paste between sessions in different SAP systems, for example, between the development and the productive system. This process should not be confused with transporting objects. It is just a faster process than performing a download and upload operation on the local workstation disk. Table 7 2 presents a summary of these functions.
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The ABAP Source Code Editor Table 7 2: Clipboard Cut and Paste Options Buffer Session buffer Clipboard X Clipboard Y Clipboard Z Clipboard (system buffer) Line Editing Options Copy Function Edit Copy to buffer Block/buffer Copy to X clipboard Block/buffer Copy to Y clipboard Block/buffer Copy to Z clipboard Block/buffer Copy to clipboard Paste Function Edit Insert from buffer Block/buffer Insert from X clipboard Block/buffer Insert from Y clipboard Block/buffer Insert from Z clipboard Block/buffer Insert from clipboard
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The source code editor includes some utilities for performing some functions in the line where the cursor is positioned (the active line). Some of these functions are directly available from the icons in the application toolbar, but all of them are accessible from the menu bar options as the following list shows. Menu Option Edit Edit line Insert line Edit Edit line Delete line or Edit Cut Edit Edit line Split line Edit Edit line Concatenate line Edit Edit line Duplicate line Searching and Replacing Function Inserts a new line before the active line Deletes the active line Divides the active line into two lines at the position where the cursor is located Joins active line with the previous line into a single line Duplicates the active line
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As with common editing tools, the ABAP source code editor includes functions for searching and replacing text. To perform these functions, from the editor menu, select Edit Search / Replace or, alternatively, as a fast path, click on the Find button located on the standard toolbar. The system displays a dialog box where you can enter the text to find and the text you wish to replace it with. Layout Commands In order to improve the appearance of the source code on the screen, the editor includes several options; the most common is the Pretty printer. The function Program Pretty printer rewrites the program code following the indentation rules as described in the ABAP user guide. This function should only be executed after the program has been checked and contains no syntactical errors.
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