Feature/file system cache (#692)

* First pass at caching file system.

* default-file-system -> slang-file-system
fix problem with location("build.linux") confusing windows build for now.

* Added CompressedResult
Fix problem in Result construction with it being unsigned

* Add support for Path simplification.

* Testing for Path::Simplify.

* Refactored CacheFileSystem - automatically handles ISlangFileSystem or ISlangFileSystemExt appropriately.
Removed WrapFileSystem - because wasn't possible to emulate some of the behavior if just loadFile is implemented.
Split out StringBlob - so that no need to convert between ISlangBlob and String repeatidly.

* Remove unwanted code in ~CompileRequest

1 files changed, 11 insertions, 0 deletions

diff --git a/source/core/slang-io.h b/source/core/slang-io.h
index ff287254c..3703aee08 100644
--- a/source/core/slang-io.h
+++ b/source/core/slang-io.h
@@ -32,6 +32,17 @@ namespace Slang
 		static String Combine(const String & path1, const String & path2, const String & path3);
 		static bool CreateDir(const String & path);
 
+            /// Accept either style of delimiter
+        SLANG_FORCE_INLINE static bool IsDelimiter(char c) { return c == '/' || c == '\\'; }
+
+        static bool IsDriveSpecification(const UnownedStringSlice& element);
+
+            /// Splits the path into it's individual bits
+        static void Split(const UnownedStringSlice& path, List<UnownedStringSlice>& splitOut);
+            /// Strips .. and . as much as it can 
+        static String Simplify(const UnownedStringSlice& path);
+        static String Simplify(const String& path) { return Simplify(path.getUnownedSlice()); }
+
         static SlangResult GetPathType(const String & path, SlangPathType* pathTypeOut);
 
         static SlangResult GetCanonical(const String & path, String& canonicalPathOut);