Revise how hidden implicit casts are recognized.

The old approach used an `isRewriter` flag in the emit logic, but I kind of need that flag to go away.
Instead, I now how the semantic checking pass detect whether an implicitly-generated type cast is in rewriter code, and if so it uses the new `HiddenImplicitCastExpr` AST node.
The emit logic then looks for that specific node and eliminates it.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/slang/parser.cpp b/source/slang/parser.cpp
index 2056bf809..0efc8cd77 100644
--- a/source/slang/parser.cpp
+++ b/source/slang/parser.cpp
@@ -3092,7 +3092,7 @@ namespace Slang
 
                 if (peekTypeName(parser) && parser->LookAheadToken(TokenType::RParent, 1))
                 {
-                    RefPtr<TypeCastExpressionSyntaxNode> tcexpr = new TypeCastExpressionSyntaxNode();
+                    RefPtr<TypeCastExpressionSyntaxNode> tcexpr = new ExplicitCastExpr();
                     parser->FillPosition(tcexpr.Ptr());
                     tcexpr->TargetType = parser->ParseTypeExp();
                     parser->ReadToken(TokenType::RParent);