Add API for querying TypeLayout from a Type

Added two API functions:
1. `spReflection_FindTypeByName`, which returns a DeclRefType to the struct type with the given name. The function finds from all loaded modules in a `CompileRequest` for a decl with the given name, construct a `Type` object and cache it in `CompileRequest::types` dictionary. The subsequent calls to `spReflection_FindTypeByName` with the same name will simply returned the cached Type objects.
2. `spReflection_GetTypeLayout`, which returns a `TypeLayout` for a given `Type`. This function creates and caches the `TypeLayout` in the `TargetRequest` object that is used to create the `ProgramLayout`.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/slang/compiler.h b/source/slang/compiler.h
index 0e85a1088..2302c77c0 100644
--- a/source/slang/compiler.h
+++ b/source/slang/compiler.h
@@ -16,6 +16,7 @@ namespace Slang
     class CompileRequest;
     class ProgramLayout;
     class PtrType;
+    class TypeLayout;
 
     enum class CompilerMode
     {
@@ -197,6 +198,9 @@ namespace Slang
         // in the parent compile request (indexing matches
         // the order they are given in the compile request)
         List<CompileResult> entryPointResults;
+
+        // TypeLayouts created on the fly by reflection API
+        Dictionary<Type*, RefPtr<TypeLayout>> typeLayouts;
     };
 
     // A directory to be searched when looking for files (e.g., `#include`)
@@ -255,6 +259,9 @@ namespace Slang
         // assocaited with a translation unit).
         List<RefPtr<EntryPointRequest> > entryPoints;
 
+        // Types constructed by reflection API
+        Dictionary<String, RefPtr<Type>> types;
+
         // The code generation profile we've been asked to use.
         Profile profile;