[cfe-dev] Number of elements in ArrayType?

[Keane, Erich via cfe-dev]

It depends on the type of the ArrayType.  ArrayType is the base class of ConstantArrayType, DependentSizedArrayType, IncompleteArrayType, and VariableArrayType.

You have to dyn_cast to whichever the array is.  Note that only ConstantArrayType has a constant size (with its function getSize(), or getSizeExpr for the expression itself).

DependentSizedArrayType will show up in a template, if the size itself is a template parameter (you can get THAT with getSizeExpr()).

VariableArrayType represents a VLA (variable length array), so it will also have a getSizeExpr() that isn't calculatable at compile time.

IncompleteArrayType does not have a size.

-----Original Message-----
From: cfe-dev <cfe-dev-bounces at lists.llvm.org> On Behalf Of Kenth Eriksson via cfe-dev
Sent: Tuesday, October 29, 2019 6:59 AM
To: cfe-dev at lists.llvm.org
Subject: [cfe-dev] Number of elements in ArrayType?

Hi!

How can I get the number of elements in ArrayType?


/k
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