Support for __LINE__ and __FILE__ in preprocessor (#1772)

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

* First pass support for __LINE__ and __FILE__.

* Test include handling with __FILE__
Fix diagnostic compare when input is empty.

* Fix some issues in preprocessor handling of special macros like __LINE__
Add a more complex test.

* Use CONCAT2 in tests, because preprocessor doesn't quite get parameter expansion correct.

* Make __FILE__ and __LINE__ behave more like Clang/Gcc.

* A test for preprocessor bug.

* Fix __LINE__ and __FILE__ in macro expansion, should be initiating location.

* Fix some comments.

* Small tidy up around builtin macros.

* Small improvements for macro type names.
Escape found paths.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/slang/slang-source-loc.cpp b/source/slang/slang-source-loc.cpp
index 3f9f8ad31..4b589fbf3 100644
--- a/source/slang/slang-source-loc.cpp
+++ b/source/slang/slang-source-loc.cpp
@@ -66,9 +66,9 @@ void PathInfo::appendDisplayName(StringBuilder& out) const
         case Type::FromString:
         case Type::FoundPath:
         {
-            // TODO(JS): We might want to escape the path here if necessary
+            
             out.appendChar('"');
-            out << foundPath;
+            StringUtil::appendEscaped(foundPath.getUnownedSlice(), out);    
             out.appendChar('"');
             break;
         }