Language server: auto completion of `import` file and directories. (#2312)

* Language server: auto completion of `import` file and directories.

* Completion of include path.

* Improvements.

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/source/core/slang-string.cpp b/source/core/slang-string.cpp
index 03de07ee1..c02ba048d 100644
--- a/source/core/slang-string.cpp
+++ b/source/core/slang-string.cpp
@@ -134,7 +134,7 @@ namespace Slang
         if (otherSize > thisSize)
             return false;
 
-        return UnownedStringSlice(begin(), begin() + otherSize) == other;
+        return head(otherSize) == other;
     }
 
     bool UnownedStringSlice::startsWith(char const* str) const
@@ -142,6 +142,17 @@ namespace Slang
         return startsWith(UnownedTerminatedStringSlice(str));
     }
 
+    bool UnownedStringSlice::startsWithCaseInsensitive(UnownedStringSlice const& other) const
+    {
+        UInt thisSize = getLength();
+        UInt otherSize = other.getLength();
+
+        if (otherSize > thisSize)
+            return false;
+
+        return head(otherSize).caseInsensitiveEquals(other);
+    }
+
 
     bool UnownedStringSlice::endsWith(UnownedStringSlice const& other) const
     {
@@ -474,6 +485,8 @@ namespace Slang
     {
         auto oldLength = getLength();
         auto textLength = textEnd - textBegin;
+        if (textLength <= 0)
+            return;
 
         auto newLength = oldLength + textLength;