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LED - Language Editor¶

ND 230050 LED for OWS
ND 211465 LED for ND-5100/xi
ND 211157 LED Debugger for ND-500/ND-5000
ND 211160 LED for ND-500/ND-5000

[Photo: Computer systems with monitors and keyboard]

ND
Norsk Data

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LED - Language Editor¶

Introduction¶

The Language Editor - LED - is a highly effective editor integrated with other program development tools to produce an enhanced programmer environment. The editor is efficiently implemented for the ND-5000 and ND-500 systems. It is integrated with compilers which make it a Syntax Editor, and with debuggers which make it a Source Debugger.

In addition, the user interface is based on a window mechanism where rectangular windows can be easily defined and manipulated. Different source codes and debug information can be viewed and manipulated from the same screen, without leaving the LED editor.

Product Description¶

The Language Editor programmer environment consists of several products:

The central part is the editor with general editing mechanisms. The editor itself includes many language-related features.
The user interface is through ease-of-use windows.
A full compiler syntax and semantics check is done from the editor in the integrated editor-compilers.
The symbolic debugger is fully integrated with the LED editor through the window mechanism.

graph LR
    A[Sorting] --> C[Syntax checking for Sintran]
    B[Pretty-print] --> C
    D[Indentation] --> C
    C --> E[LED Kernel System]
    F[Source Debugger for Sintran] --> E
    E --> G[Window System]
    G --> H(( ))
    G --> I(( ))

The architecture of the product family is open for easy inclusion of new features and products.

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LED - Language Editor¶

Available on:¶

Features	SINTRAN III	UNIX®	MS-DOS®
Windows are easily defined as multiple non-overlapping or overlapping windows for simultaneous display and editing of several texts.	●	●	●
Windows can be renamed and deleted.	●	●	●
Several files can be read into different windows with one command.	●	●	●
Write all modified files in all windows.	●	●	●
Easy to move between windows, to manipulate windows and to move program source text between windows (cut and paste).	●	●	●
Cursor's position in file in window can be stored and recalled for navigation purposes.	●	●	●
Compare areas in one or more windows representing one or more files.	●	●	●
Programming-related functionality and language-dependent modes. Search and substitute follow the language syntax.	●	●	●
Indentation, pretty-print and browsing for C, Fortran, Planc and Pascal.	●	●	●
Both forward and backward search. Searching in several texts at a time.	●	●	●
Browsing function where lower levels of program structures can be hidden.	●	●	●
Advanced cancel possibilities. All changes made in the text can be cancelled by repeatedly pressing the "cancel" key and answering yes/no to whether you wish to restore the original line or not.	●	●	●
Cancel allowed for read, write, get-string, get-pattern, substitute and pretty-print operations.	●	●	●
User Programmable Keys to define own editing functions.	●	●	●
For specific languages all compiler syntax checking is done from the LED editor. The cursor is positioned at the error and allows you to correct mistakes immediately.	●	●	●
Auxiliary Process Control provides a multi-process environment.	●	●	●
Compiler messages mapped into source files.	●	●	●
Comment headers inserted with a keystroke.	●	●	●
Top performance, especially fast response to read and write files. This is due to an advanced but simple implementation.	●	●	●
Integration of the symbolic debugger with LED using the window mechanism.	●	●	●
Both updated source code and debug information in separate windows on the same screen.	●	●	●
Set breakpoints and display variables just by pointing in the source code. Execute the program to the breakpoint by pressing a key.	●	●	●
Display the debug information in one window, while immediately correcting the source code in another window.	●	●	●
Step by step execution while LED scrolls the source code and pinpoints the currently executed statement.	●	●	●
All the debug history is stored and can be reread, edited etc.	●	●	●
Macro facilities.	●	●	●
Debugging of programs with full-screen output by debugging from an alternative terminal.	●	●	●

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Requirements¶

ND-5000 or ND-500 for ND 211160 and ND 211157
ND-5100/xi for ND 211465
OWS-12/55/85 for ND 230050

Documentation¶

LED User Guide
ND-860266 EN

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