1 files changed, 35 insertions, 0 deletions
diff --git a/source/slang/preprocessor.h b/source/slang/preprocessor.h
new file mode 100644
index 000000000..ab72f3f87
--- /dev/null
+++ b/source/slang/preprocessor.h
@@ -0,0 +1,35 @@
+// Preprocessor.h
+#ifndef SLANG_PREPROCESSOR_H_INCLUDED
+#define SLANG_PREPROCESSOR_H_INCLUDED
+
+#include "../core/basic.h"
+#include "../slang/lexer.h"
+
+namespace Slang{ namespace Compiler {
+
+class DiagnosticSink;
+class ProgramSyntaxNode;
+
+// Callback interface for the preprocessor to use when looking
+// for files in `#include` directives.
+struct IncludeHandler
+{
+    virtual bool TryToFindIncludeFile(
+        CoreLib::String const& pathToInclude,
+        CoreLib::String const& pathIncludedFrom,
+        CoreLib::String* outFoundPath,
+        CoreLib::String* outFoundSource) = 0;
+};
+
+// Take a string of source code and preprocess it into a list of tokens.
+TokenList preprocessSource(
+    CoreLib::String const& source,
+    CoreLib::String const& fileName,
+    DiagnosticSink* sink,
+    IncludeHandler* includeHandler,
+    CoreLib::Dictionary<CoreLib::String, CoreLib::String>  defines,
+    ProgramSyntaxNode*  syntax);
+
+}}
+
+#endif