http://d.puremagic.com/issues/show_bug.cgi?id=11172
Summary: Allow scoped assignment of version and debug
statements
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Andrej Mitrovic <[email protected]> 2013-10-04
07:36:56 PDT ---
-----
void foo() { }
void main()
{
version = CALL_FOO;
version (CALL_FOO)
{
foo();
}
debug = DEBUG_FOO;
debug (DEBUG_FOO)
{
foo();
}
}
-----
$ dmd test.d
test.d(5): Error: (condition) expected following version
test.d(5): Error: found '=' instead of statement
test.d(11): Error: found '=' instead of statement
Allowing this would mean the version/debug identifiers were valid inside the
scope of the assignment. Outside of main() a version(CALL_FOO) body would not
be entered.
The workaround is use to use enums and static if:
-----
void foo() { }
void main()
{
enum CALL_FOO = 1;
static if (CALL_FOO)
{
foo();
}
enum DEBUG_FOO = 1;
static if (DEBUG_FOO)
{
foo();
}
}
-----
But it would be more convenient to allow the former version/debug syntax,
especially if we want to re-use existing version/debug identifiers.
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