Fix for issue with user attribute lookup (#2437)

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

* Add handling for root paths.

* Fixes around absolute paths.

* Add SimplifyStyle

* Remove unrequire include.

* Fix some details around RelativeFileSystem canonical paths.

* For MemoryFileSystem make sure "/a" and "a" maps to same canonical path.

* Add test for canonicalPath.

* Improve comment.

* More testing around canonical paths.

* Fix for user attribute lookup issue.

* Add a test.

* Small improvements in test.

* Improve the comments around lookup workaround.

1 files changed, 20 insertions, 0 deletions

diff --git a/source/slang/slang-check.cpp b/source/slang/slang-check.cpp
index bcc74a6d0..8c6cddbfe 100644
--- a/source/slang/slang-check.cpp
+++ b/source/slang/slang-check.cpp
@@ -210,4 +210,24 @@ namespace Slang
             throw;
         }
     }
+
+    void removeLookupForName(TypeCheckingCache* cache, Name* name)
+    {
+        auto& lookupCache = cache->lookupCache;
+
+        List<LookupRequestKey> keys;
+
+        for (const auto& pairs : lookupCache)
+        {
+            const auto& key = pairs.Key;
+            if (key.name == name)
+            {
+                keys.add(key);
+            }
+        }
+        for (auto& key : keys)
+        {
+            lookupCache.Remove(key);
+        }
+    }
 }