Link-time constant and linkage API improvements. (#3708)

* Link-time constant and linkage API improvements.

* Fix.

* Allow module name to be empty.

* Fix.

* Fix.

* Fix compile error.

1 files changed, 27 insertions, 1 deletions

diff --git a/source/slang/slang.cpp b/source/slang/slang.cpp
index 1aa014a4b..dc9f86b48 100644
--- a/source/slang/slang.cpp
+++ b/source/slang/slang.cpp
@@ -1161,13 +1161,29 @@ slang::IModule* Linkage::loadModuleFromBlob(
 
     try
     {
-        auto name = getNamePool()->getName(moduleName);
+        auto getDigestStr = [](auto x)
+            {
+                DigestBuilder<SHA1> digestBuilder;
+                digestBuilder.append(x);
+                return digestBuilder.finalize().toString();
+            };
+
+        String moduleNameStr = moduleName;
+        if (!moduleName)
+            moduleNameStr = getDigestStr(source);
+
+        auto name = getNamePool()->getName(moduleNameStr);
         RefPtr<LoadedModule> loadedModule;
         if (mapNameToLoadedModules.tryGetValue(name, loadedModule))
         {
             return loadedModule;
         }
         String pathStr = path;
+        if (pathStr.getLength() == 0)
+        {
+            // If path is empty, use a digest from source as path.
+            pathStr = getDigestStr(source);
+        }
         auto pathInfo = PathInfo::makeFromString(pathStr);
         if (File::exists(pathStr))
         {
@@ -1205,6 +1221,16 @@ SLANG_NO_THROW slang::IModule* SLANG_MCALL Linkage::loadModuleFromSource(
     return loadModuleFromBlob(moduleName, path, source, ModuleBlobType::Source, outDiagnostics);
 }
 
+SLANG_NO_THROW slang::IModule* SLANG_MCALL Linkage::loadModuleFromSourceString(
+    const char* moduleName,
+    const char* path,
+    const char* source,
+    slang::IBlob** outDiagnostics)
+{
+    auto sourceBlob = StringBlob::create(UnownedStringSlice(source));
+    return loadModuleFromSource(moduleName, path, sourceBlob.get(), outDiagnostics);
+}
+
 SLANG_NO_THROW slang::IModule* SLANG_MCALL Linkage::loadModuleFromIRBlob(
     const char* moduleName,
     const char* path,