View source code
Display the source code in dmd/expressionsem.d from which thispage was generated on github.
Report a bug
If you spot a problem with this page, click here to create aBugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page.Requires a signed-in GitHub account. This works well for small changes.If you'd like to make larger changes you may want to consider usinglocal clone.

Function dmd.expressionsem.lowerNonArrayAggregate

Lower any aggregate that is not an array to an array using a regular foreach loop within CTFE. If there are multiple static foreach loop variables, an array of tuples is generated. In thise case, the field needExpansion is set to true to indicate that the static foreach loop expansion will need to expand the tuples into multiple variables.

extern(C++) void lowerNonArrayAggregate(
  StaticForeach sfe,
  dmd.dscope.Scope* sc
);

For example, static foreach (x; range) { ... } is lowered to:

static foreach (x; { typeof({ foreach (x; range) return x; }())[] _res; foreach (x; range) _res ~= x; return _res; }()) { ... }

Finally, call lowerArrayAggregate to turn the produced array into an expression tuple.

Parameters

NameDescription
sfe The 'static foreach'.
sc The current scope.

Authors

Walter Bright

License

Boost License 1.0