|
Tom,
CDT has no convenient support for determining the linkage
of a name.
For the purpose of tooling we cannot directly use the
notion of internal linkage. For example
when searching for the references of a global constant, one
will expect to see all references
regardless of in which compilation unit they reside.
However, when searching for references
of a (non-constant) global variable you
expect to see the references of one compilation unit,
only. Therefore we have introduced
IIndexBinding.isFileLocal() to deal with this tooling
specific
distinction.
Markus.
Thanks Markus, that’s what we
had suspected.
In that case, is there any way
of determining whether a variable has internal or external
linkage?
Tom
From:
cdt-dev-bounces@xxxxxxxxxxx [mailto:cdt-dev-bounces@xxxxxxxxxxx] On Behalf
Of Schorn, Markus
Sent: 11 February 2010 08:57
To: CDT
General developers list.
Subject: RE: [cdt-dev] Constant global
variables in C++
Hi
Tom,
The
c++-standard defines the static 'storage-class-specifiers' as
a piece of grammar (7.1.1). IVariable.isStatic() tells you
whether a static storage-class-specifier has been used for the
declaration of the variable.
What
Microsoft refers to is defined as internal vs. external linkage of a name. And
indeed constant global variables
have
internal linkage (7.1.6.1).
Note,
that there is also a notion of static storage duration (3.7), which is
something different.
Markus.
From:
cdt-dev-bounces@xxxxxxxxxxx [mailto:cdt-dev-bounces@xxxxxxxxxxx] On
Behalf Of Tom Longridge
Sent: Wednesday, February 10, 2010
5:49 PM
To: 'cdt-dev@xxxxxxxxxxx'
Subject: [cdt-dev]
Constant global variables in C++
Importance: Low
Hi all,
Is it correct to say that constant global variables in
C++ have static storage class? (This is suggested here: http://msdn.microsoft.com/en-us/library/0d45ty2d(VS.80).aspx.)
If so, should IVariable.isStatic() return true for such a
binding? This does not seem to be the case at the moment.
Many thanks,
Tom
The
information transmitted is intended only for the person or entity to which
it is addressed and may contain confidential and/or privileged material. If
you are not the addressee, any disclosure, reproduction, copying,
distribution, or other dissemination or use of this communication is
strictly prohibited. If you have received this transmission in error please
notify the sender immediately and then delete this
email.
Any
representations or commitments expressed in this email are subject to
contract.
This
message has been scanned for viruses and dangerous content. However, it is
essential that the recipient also checks this message using commercially
available mail scanning and anti-virus software. IPL Information Processing
Limited accepts no liability for any loss or damage resulting from any virus
or other dangerous content in this message.
IPL
Information Processing Limited is registered in England and Wales under
company registration number 1418818. Registration took place at Cardiff on
10 May 1979. IPL Information Processing Limited's registered office and
normal place of business is Eveleigh House, Grove Street, Bath, BA1 5LR,
United Kingdom. IPL is also registered for Value Added Tax (VAT) under
registration number GB 601 2931 83.
The
information transmitted is intended only for the person or entity to which it
is addressed and may contain confidential and/or privileged material. If you
are not the addressee, any disclosure, reproduction, copying, distribution, or
other dissemination or use of this communication is strictly prohibited. If
you have received this transmission in error please notify the sender
immediately and then delete this email.
Any
representations or commitments expressed in this email are subject to
contract.
This
message has been scanned for viruses and dangerous content. However, it is
essential that the recipient also checks this message using commercially
available mail scanning and anti-virus software. IPL Information Processing
Limited accepts no liability for any loss or damage resulting from any virus
or other dangerous content in this message.
IPL
Information Processing Limited is registered in England and Wales under
company registration number 1418818. Registration took place at Cardiff on 10
May 1979. IPL Information Processing Limited's registered office and normal
place of business is Eveleigh House, Grove Street, Bath, BA1 5LR, United
Kingdom. IPL is also registered for Value Added Tax (VAT) under registration
number GB 601 2931 83.
|
