Ben Clayton 0b4a2f1f50 tint: Add sem::Expression
A new base class for sem::ValueExpression, which other types of
expression can derive from.

Example: sem::TypeExpression - an expression that resolves to a type.

Bug: tint:1810
Change-Id: I90dfb66b265b67d9fdf0c04eb3dce2442c7e18ea
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/118404
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
2023-02-05 22:59:40 +00:00
..