Support compile-time constant int val in the form of polynomials. (#2372)

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/source/slang/slang-language-server.cpp b/source/slang/slang-language-server.cpp
index da72ea65e..d3be5c4dc 100644
--- a/source/slang/slang-language-server.cpp
+++ b/source/slang/slang-language-server.cpp
@@ -243,7 +243,9 @@ String getDeclSignatureString(DeclRef<Decl> declRef, WorkspaceVersion* version)
                 DiagnosticSink sink;
                 SharedSemanticsContext semanticContext(version->linkage, getModule(varDecl), &sink);
                 SemanticsVisitor semanticsVisitor(&semanticContext);
-                if (auto intVal = semanticsVisitor.tryFoldIntegerConstantExpression(varDecl->initExpr, nullptr))
+                if (auto intVal = semanticsVisitor.tryFoldIntegerConstantExpression(
+                        declRef.substitute(version->linkage->getASTBuilder(), varDecl->initExpr),
+                        nullptr))
                 {
                     if (auto constantInt = as<ConstantIntVal>(intVal))
                     {
@@ -257,6 +259,11 @@ String getDeclSignatureString(DeclRef<Decl> declRef, WorkspaceVersion* version)
                             sb << constantInt->value;
                         }
                     }
+                    else
+                    {
+                        sb << " = ";
+                        intVal->toText(sb);
+                    }
                 }
             }
         }