AST dumping via C++ Extractor reflection (#1348)

* Add support for parsing array types to C++ extractor.

* C++ extractor looks for 'balanced tokens'. Use for extracting array suffixes.

* First pass at field dumping.

* Update project for field dumping.

* WIP AST Dumper.

* More AST dump compiling.

* Fix bug in StringSlicePool where it doesn't use the copy of the UnownedStringSlice in the map.

* Add support for SLANG_RELFECTED and SLANG_UNREFLECTED
More AST dump support.

* Support for hierarchical dumping/flat dumping.
Use SourceWriter to dump.

* Add -dump-ast command line option.

* Add fixes to VS project to incude AST dump.

* Fix compilation on gcc.

* Add fix for type ambiguity issue on x86 VS.

* Fixes from merge of reducing Token size.

* Fix comment about using SourceWriter.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/slang/slang.cpp b/source/slang/slang.cpp
index 34f1402b5..82bc5e478 100644
--- a/source/slang/slang.cpp
+++ b/source/slang/slang.cpp
@@ -14,6 +14,8 @@
 #include "slang-reflection.h"
 #include "slang-type-layout.h"
 
+#include "slang-ast-dump.h"
+
 #include "slang-state-serialize.h"
 
 #include "slang-file-system.h"
@@ -996,6 +998,25 @@ void FrontEndCompileRequest::parseTranslationUnit(
             tokens,
             getSink(),
             languageScope);
+
+        // Let's try dumping
+
+        if (shouldDumpAST)
+        {
+            StringBuilder buf;
+            SourceWriter writer(linkage->getSourceManager(), LineDirectiveMode::None);
+
+            ASTDumpUtil::dump(translationUnit->getModuleDecl(), ASTDumpUtil::Style::Flat, &writer);
+
+            const String& path = sourceFile->getPathInfo().foundPath;
+            if (path.getLength())
+            {
+                String fileName = Path::getFileNameWithoutExt(path);
+                fileName.append(".slang-ast");
+
+                File::writeAllText(fileName, writer.getContent());
+            }
+        }
     }
 }