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, 3 insertions, 0 deletions

diff --git a/source/slang/parameter-binding.cpp b/source/slang/parameter-binding.cpp
index 6145015f1..6dac47631 100644
--- a/source/slang/parameter-binding.cpp
+++ b/source/slang/parameter-binding.cpp
@@ -1786,6 +1786,8 @@ void generateParameterBindings(
         return;
 
     RefPtr<ProgramLayout> programLayout = new ProgramLayout();
+    programLayout->targetRequest = targetReq;
+
     targetReq->layout = programLayout;
 
     // Create a context to hold shared state during the process
@@ -2061,6 +2063,7 @@ RefPtr<ProgramLayout> specializeProgramLayout(
 {
     RefPtr<ProgramLayout> newProgramLayout;
     newProgramLayout = new ProgramLayout();
+    newProgramLayout->targetRequest = targetReq;
     newProgramLayout->bindingForHackSampler = programLayout->bindingForHackSampler;
     newProgramLayout->hackSamplerVar = programLayout->hackSamplerVar;
     newProgramLayout->globalGenericParams = programLayout->globalGenericParams;