MOO Language Syntax Update

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#22 MOO Language Syntax Update

Status: closed-remind

Owner: nobody

Labels: None

Priority: 5

Updated: 2011-11-11

Created: 2002-09-28

Creator: Luke-Jr

Private: No

This updates the operators supported by the C&
interpretor in LambdaMOO. Added operators are +=, -=,
*=, /=, %=, ^=, &.=, |.=, ~.=, >>=, <<=, |., &., ~.,
>>, <<, var++, var--, ++var, --var, and ~var. This also
updates the syntax to support hexadecimal (0xFF), octal
(0o77), and binary (0b11) numbers when compiling. Like
/* */ comments, however, the original base of a number
is forgotten and therefore hex/oct/binary numbers will
be decompiled as decimal.
This patch is NOT by default compatible with the
Scattered For patch. If you use Scattered For, you must
uncomment 2 groups of code (cmp_scatter and some code
in cmp_expr)

Discussion

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Luke-Jr - 2002-09-28

Patch for LambdaMOO

syntax_update.patch

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Luke-Jr - 2002-10-06

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A bug with `var++' was discovered... Probably during
free_expr... Working on a fix. In the meantime, be aware
that this is NOT stable (until I follow-up a fix).

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Luke-Jr - 2002-10-06

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Okay... got a fix made up. Attaching a patch for current
users and new users.
If you have the buggy syntax update, use the r1_to_r2 patch.
If you don't have the syntax update, use the r2 patch.

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Luke-Jr - 2002-10-06

Fixes a bug in the initial Syntax Update code.

syntax_update_r1_to_r2.patch

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Luke-Jr - 2002-10-06

syntax_update_r2.patch

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Luke-Jr - 2002-10-08

Updates Lambda+SyntaxR2 to R3 (bugfix: variable lossage in decompile)

syntax_update_r2_to_r3.patch

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Luke-Jr - 2002-10-08

Patches SyntaxR3 into LambdaMOO

syntax_update_r3.patch

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Luke-Jr - 2002-10-08

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Just fixed a major bug which caused verbs to be decompiled
without the variable name for normal assign operations (`a =
*').

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Luke-Jr - 2002-10-09

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Sigh... Fixed a bug with silly stuff like ||= and &&= (which
don't exist) coming out of the decompiler... This time I
actually tested it by loading and saving a JHCore
database... the savings were about 4.5 KB and it was able to
load the output db...

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Luke-Jr - 2002-10-09

Patches SyntaxR4 into LambdaMOO

syntax_update_r4.patch

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Luke-Jr - 2002-10-09

Updates Lambda+SyntaxR3 to R4

syntax_update_r3_to_r4.patch

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Luke-Jr - 2004-01-28

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I have been using this modification for month in my own MOOs
and it seems stable.

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Luke-Jr - 2004-01-28

summary: C& Syntax Update --> MOO Language Syntax Update
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Nobody/Anonymous - 2008-08-11

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Using var++ with a property (IE $foo.bar++) will crash the MOO.

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Luke-Jr - 2008-08-11

Patches SyntaxR5 into LambdaMOO

syntax_update_r5.patch

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Luke-Jr - 2008-08-11

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File Added: syntax_update_r5.patch

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Luke-Jr - 2008-08-11

Updates Lambda+SyntaxR4 to R5 (bugfix: o.prop++ crash)

syntax_update_r4_to_r5.patch

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Luke-Jr - 2008-08-11

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File Added: syntax_update_r4_to_r5.patch

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Luke-Jr - 2008-08-11

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Fixed. Using var++ with a property (IE $foo.bar++) now works correctly with R5.

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Nobody/Anonymous - 2009-01-22

If you use ~ on a variable that does not exist, it panics the server.

Additionally, just a minor cosmetic issue, but, using ++ with a variable does not parse back to ++, but rather back to foo.bar = foo.bar + 1

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Nobody/Anonymous - 2009-01-22

If you use ~ on a variable that does not exist, it panics the server.

Additionally, just a minor cosmetic issue, but, using ++ with a variable does not parse back to ++, but rather back to foo.bar = foo.bar + 1

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Luke-Jr - 2009-01-22

Thanks for the bug report with ~; I will upload a bugfix patch in a moment.

Whether the decompiler uses shorthand syntax or not is a verb_code() option in GammaMOO. Porting this back to a patch is beyond the scope of this bug report, however.
File Added: syntax_update_r5_to_r6.patch

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Luke-Jr - 2009-01-22

syntax_update_r5_to_r6.patch

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Nobody/Anonymous - 2009-01-23

;;var=0;return ~var also panics the server.

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HawkeyeLonewolf - 2009-02-28

Is there an FAQ on how to install these?

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