C++ extractor improvements (#1803)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Split of NodeTree.
Split out FileUtil.
Split out MacroWriter.

* Rename slang-cpp-extractor-main.cpp -> cpp-extractor-main.cpp

* First pass at extractor unit-tests

* Initial parsing of enum.

* Ability to disable/enable parsing of scope types.

* Initial support for typedef.

* Added operator== != to ArrayVIew.
Added test for splitting to unit tests.

* Improve comment in StringUtil.

* Fix comment.

* Fix typo.

1 files changed, 47 insertions, 0 deletions

diff --git a/tools/slang-cpp-extractor/macro-writer.h b/tools/slang-cpp-extractor/macro-writer.h
new file mode 100644
index 000000000..b1754741d
--- /dev/null
+++ b/tools/slang-cpp-extractor/macro-writer.h
@@ -0,0 +1,47 @@
+#ifndef CPP_EXTRACT_MACRO_WRITER_H
+#define CPP_EXTRACT_MACRO_WRITER_H
+
+#include "diagnostics.h"
+
+#include "options.h"
+#include "node-tree.h"
+
+#include "../../source/compiler-core/slang-diagnostic-sink.h"
+
+namespace CppExtract {
+using namespace Slang;
+
+/* A class that writes out macros that define type hierarchies, as well as fields of types */
+class MacroWriter
+{
+public:
+
+        /// Write output
+    SlangResult writeOutput(NodeTree* tree);
+
+        /// Write def files
+    SlangResult writeDefs(NodeTree* tree);
+
+        /// Calculate the header 
+    SlangResult calcTypeHeader(NodeTree* tree, TypeSet* typeSet, StringBuilder& out);
+    SlangResult calcChildrenHeader(NodeTree* tree, TypeSet* typeSet, StringBuilder& out);
+    SlangResult calcOriginHeader(NodeTree* tree, StringBuilder& out);
+
+    SlangResult calcDef(NodeTree* tree, SourceOrigin* origin, StringBuilder& out);
+
+        /// Ctor.
+    MacroWriter(DiagnosticSink* sink, const Options* options): 
+        m_sink(sink),
+        m_options(options)
+    {
+    }
+
+protected:
+
+    const Options* m_options = nullptr;
+    DiagnosticSink* m_sink;
+};
+
+} // CppExtract
+
+#endif