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, 13 insertions, 0 deletions

diff --git a/source/slang/slang-options.cpp b/source/slang/slang-options.cpp
index 9353acd35..681999168 100644
--- a/source/slang/slang-options.cpp
+++ b/source/slang/slang-options.cpp
@@ -524,8 +524,13 @@ void initCommandOptions(CommandOptions& options)
          nullptr,
          "Preserve all resource parameters in the output code, even if they are not used by the "
          "shader."},
+        {OptionKind::EmitReflectionJSON,
+         "-reflection-json",
+         "reflection-json <path>",
+         "Emit reflection data in JSON format to a file."},
     };
 
+
     _addOptions(makeConstArrayView(generalOpts), options);
 
     /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Target !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
@@ -2663,6 +2668,14 @@ SlangResult OptionsParser::_parse(int argc, char const* const* argv)
                 addOutputPath(outputPath.value.getBuffer());
                 break;
             }
+        case OptionKind::EmitReflectionJSON:
+            {
+                CommandLineArg outputPath;
+                SLANG_RETURN_ON_FAIL(m_reader.expectArg(outputPath));
+
+                linkage->m_optionSet.set(CompilerOptionName::EmitReflectionJSON, outputPath.value);
+                break;
+            }
         case OptionKind::DepFile:
             {
                 CommandLineArg dependencyPath;