tree 0fb4d59e1adee30a116208c0115814d36e04548f
parent 4ccc4cc5d4e7c5c436d5f45065d3639cfc7c6e48
author Jordan Rose <jordan_rose@apple.com> 1342648781 +0000
committer Jordan Rose <jordan_rose@apple.com> 1342648781 +0000

[analyzer] Make CallEvent a value object.

We will need to be able to easily reconstruct a CallEvent from an ExplodedNode
for diagnostic purposes, and that's exactly what factory functions are for.
CallEvent objects are small enough (four pointers and a SourceLocation) that
returning them through the stack is fairly cheap. Clients who just need to use
existing CallEvents can continue to do so using const references.

This uses the same sort of "kind-field-dispatch" as SVal, though most of the
nastiness is contained in the DISPATCH and DISPATCH_ARG macros at the end of
the file. (We can't use a template for this because member-pointers to base
class methods don't call derived-class methods even when casting to the
derived class. We can't use variadic macros because they're a C99 feature.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160459 91177308-0d34-0410-b5e6-96231b3b80d8