Anonymous user
ALGOL 68 Genie: Difference between revisions
m
linkified
mNo edit summary |
m (linkified) |
||
Line 3:
After successful parsing of an entire source program, the syntax tree, that serves as an intermediate program representation, is interpreted. The interpreter performs many runtime checks.
The author of Algol 68 Genie is Marcel van der Veer. Algol68G is released under the GNU GPL and runs on [[Linux]], [[UNIX]], [[BSD]] [[Mac OS X|Mac OS]] and [[Windows]] XP, and is available [http://www.xs4all.nl/~jmvdveer/algol.html here].
==Features of Algol68G==
* The [[interpreter]] performs checks on many events, for example: assigning to <code>NIL</code> or dereferencing of <code>NIL</code>, using uninitialised values, invalid operands to standard prelude operators and procedures, bounds check when manipulating arrays, overflow of arithmetic modes, "dangling references", that are names that refer to deallocated storage.
* Precision of numeric modes: implementation of <code>LONG INT, LONG REAL</code> and <code>LONG COMPLEX</code> with roughly doubled precision with respect to <code>INT, REAL, COMPLEX</code> and implementation of multiprecision arithmetic through <code>LONG LONG INT, LONG LONG REAL</code> and <code>LONG LONG COMPLEX</code> which are modes with user defined precision which is set by an option.
* On systems that support them, UNIX extensions that allow e.g. for executing child processes that communicate through pipes, matching regular expressions or fetching web page contents.
| |||