Ada '83 Quality and Style:
Guidelines for Professional Programmers
Copyright 1989, 1991,1992
Software Productivity Consortium, Inc., Herndon, Virginia.
CHAPTER 2: Source Code Presentation
- Use consistent spacing around delimiters.
- Use the same spacing as you would in regular prose.
- Indent and align nested control structures, continuation lines, and
embedded units consistently.
- Distinguish between indentation for nested control structures and for
- Use spaces for indentation, not the tab character (Nissen and Wallis
- Align operators vertically to emphasize local program structure and
- Use vertical alignment to enhance the readability of declarations.
- Provide at most one declaration per line.
- Indent all declarations in a single declarative part at the same level.
- Align parameter modes and parentheses vertically.
- Use blank lines to group logically related lines of text (NASA 1987).
- Highlight the top of each package or task specification, the top of
each program unit body, and the end statement of each program unit.
- Start each statement on a new line.
- Write no more than one simple statement per line.
- Break compound statements over multiple lines.
- Adhere to a maximum line length limit for source code (Nissen and
Wallis 1984, 2.3).
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