re-land of skslc type constructor cleanups
BUG=skia:
Change-Id: I953be07e2389dd4a9e7dcce0ddfd7505b309bda1
Reviewed-on: https://skia-review.googlesource.com/8265
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
diff --git a/src/sksl/ir/SkSLConstructor.h b/src/sksl/ir/SkSLConstructor.h
index 691bea1..3360ace 100644
--- a/src/sksl/ir/SkSLConstructor.h
+++ b/src/sksl/ir/SkSLConstructor.h
@@ -17,6 +17,12 @@
/**
* Represents the construction of a compound type, such as "vec2(x, y)".
+ *
+ * Vector constructors will always consist of either exactly 1 scalar, or a collection of vectors
+ * and scalars totalling exactly the right number of scalar components.
+ *
+ * Matrix constructors will always consist of either exactly 1 scalar, exactly 1 matrix, or a
+ * collection of vectors and scalars totalling exactly the right number of scalar components.
*/
struct Constructor : public Expression {
Constructor(Position position, const Type& type,