Reflection compiler option (#5507)

* Moved the pretty writer code from slang-reflection-test into core

* Moved reflection test code into the slang codebase and added the compiler option -reflection-json to store the reflection data in a separate file.

* Documented -reflection-json command line option

* moved PrettyWriter from core to compiler-core

* Fixed variable shadowing warning

* Use File::writeAllText instead of OSFilesystem and write to stdout if - is used as the path

* format code

* Fixed linker error

* Fix COM Ptr life time issues.

* Move enum to the end.

* Fix formatting.

---------

Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/source/slang/slang.cpp b/source/slang/slang.cpp
index eb938f49c..25419fb33 100644
--- a/source/slang/slang.cpp
+++ b/source/slang/slang.cpp
@@ -31,6 +31,7 @@
 #include "slang-parameter-binding.h"
 #include "slang-parser.h"
 #include "slang-preprocessor.h"
+#include "slang-reflection-json.h"
 #include "slang-repro.h"
 #include "slang-serialize-ast.h"
 #include "slang-serialize-container.h"
@@ -6857,6 +6858,22 @@ SlangResult EndToEndCompileRequest::compile()
         }
     }
 
+    auto reflectionPath = getOptionSet().getStringOption(CompilerOptionName::EmitReflectionJSON);
+    if (reflectionPath.getLength() != 0)
+    {
+        auto bufferWriter = PrettyWriter();
+        emitReflectionJSON(this, this->getReflection(), bufferWriter);
+        if (reflectionPath == "-")
+        {
+            auto builder = bufferWriter.getBuilder();
+            StdWriters::getOut().write(builder.getBuffer(), builder.getLength());
+        }
+        else if (SLANG_FAILED(File::writeAllText(reflectionPath, bufferWriter.getBuilder())))
+        {
+            getSink()->diagnose(SourceLoc(), Diagnostics::unableToWriteFile, reflectionPath);
+        }
+    }
+
     return res;
 }