"!if" - enhanced compile time flow control

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updated the patch.

!if
!else if
!endif

should now work.

of course also a combination is possible:

!ifmacrondef
!else if
!else ifdef
!else
!endif

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forgot to mention that the patch now also includes a first
try of documentation :)

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The idea seems nice, I'd apply it once it's done.

Some comments:

1) !ifn is not a standard command. If already adding a
standard-ish command, I'd prefer it to act like in CPP - #if
!(something).

2) Same goes to !if false and strings in there at all.

3) Please use spaces instead of tabs in the source code.

Thanks

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1)you're right. but as we already have ifndef (its a
standard, i know) and ifmacrondef, i thought !ifn would be nice.
i'll change this one, but it will make things more complex.

2)what to you mean? "false" should not be handled as boolean
on boolean comparision?

3)i'll do so :) its just i prefer tabs ...

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#if false is invalid in CPP. It only accepts numbers or
boolean expressions. If you give it a string, you'll get an
error.

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updated patch.

- removed !ifn
- new syntax:

!if [!] value [op value2]

works like normal "if()" statement, if optional ! is set,
works like "if (!())".

op can be:
== and != for string comparision
<=, <, >, >= for float comparision
&& and || for boolean comparision

patch file has been updated to work with latest cvs changes
(script.cpp changes for ICON errors)

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updated patch.

- removed !ifn
- new syntax:

!if [!] value [op value2]

works like normal "if()" statement, if optional ! is set,
works like "if (!())".

op can be:
== and != for string comparision
<=, <, >, >= for float comparision
&& and || for boolean comparision

patch file has been updated to work with latest cvs changes
(script.cpp changes for ICON errors)

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uploaded documentation patch file.

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sry, source patch is just shit, i should test more the next
time :)

fixed (and better tested) version including a patched test
file will be up soon.

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uploaded new fixed patch including changes for the
preprocessor.nsi test file.

script.cpp, tokens.cpp, tokens.h, preprocessor.nsi

defines.but

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new documentation patch.

VERSION 2 - script.cpp, tokens.cpp, tokens.h, preprocessor.nsi, defines.but

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uploaded whole new patch file including docs, tests and code.
file is marked with "VERSION 2" below.
i kept the old files for the case that you like the old one
better :)

changes:
- changed == to =
- removed != operator as !if ! 1 = 2 will do the same
- changed && to & and || to |

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I'd prefer it to have both options of & and &&, just like
with !ifdef. Also, why remove != ? Seems useful and it's
supported by cpp.

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it seems unuseful for me, because as i said already:

!if ! a = b

is the same as

!if a != b

would be.

and why have multiple operators for the same thing?

you may easily add them yourselfes, no big changes ...

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here's a new patch

changes:
- added equivalents:
* == for =
* && for &
* || for |
- reintroduced !=

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last update:
- fixed documentation of new operators
(replaced VERSION 3)

VERSION 3 - script.cpp, tokens.cpp, tokens.h, preprocessor.nsi, defines.but

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any more wishes? :)

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Yes, a couple of them... Can you arrange for world peace and
weekends 4 days long?