Fix type checking for varbit game variables

Author: waleedyaseen

CHANGELOG.md

@@ -17,6 +17,7 @@
 - Fix missing indentation for file block.
 - Fix type checking for expression lists.
 - Fix type checking when there is a type error.
+- Fix type checking for varbit game variables.
 
 ## [1.2.0] - 2023-08-18
 

src/main/kotlin/io/runescript/plugin/lang/psi/type/inference/RsTypeInferenceVisitor.kt

@@ -328,11 +328,21 @@ class RsTypeInferenceVisitor(private val myInferenceData: RsTypeInference) : RsV
 
     override fun visitScopedVariableExpression(o: RsScopedVariableExpression) {
         val reference = o.reference?.resolve() as? RsSymSymbol
-        if (reference == null || reference.fieldList.size < 3) {
+        if (reference == null) {
             o.type = RsErrorType
             return
         }
-        o.type = RsPrimitiveType.lookupReferencableOrNull(reference.fieldList[2].text) ?: RsErrorType
+        val isVarbit = reference.containingFile.virtualFile.nameWithoutExtension == "varbit"
+        if (isVarbit) {
+            o.type = RsPrimitiveType.INT
+        } else {
+            if (reference.fieldList.size < 3) {
+                o.error("Missing type field for game variable symbol")
+                o.type = RsErrorType
+                return
+            }
+            o.type = RsPrimitiveType.lookupReferencableOrNull(reference.fieldList[2].text) ?: RsErrorType
+        }
     }
 
     override fun visitLocalVariableExpression(o: RsLocalVariableExpression) {