Fix constant symbol file indexing

Author: waleedyaseen

src/main/kotlin/io/runescript/plugin/symbollang/psi/stub/types/RsSymSymbolStubType.kt

@@ -8,6 +8,7 @@ import com.intellij.psi.stubs.StubOutputStream
 import io.runescript.plugin.symbollang.psi.RsSymSymbol
 import io.runescript.plugin.symbollang.psi.impl.RsSymSymbolImpl
 import io.runescript.plugin.symbollang.psi.index.RsSymbolIndex
+import io.runescript.plugin.symbollang.psi.isConstantFile
 import io.runescript.plugin.symbollang.psi.stub.RsSymFieldStub
 import io.runescript.plugin.symbollang.psi.stub.RsSymSymbolStub
 
@@ -30,7 +31,11 @@ object RsSymSymbolStubType
     }
 
     override fun indexStub(stub: RsSymSymbolStub, sink: IndexSink) {
-        val nameField = stub.childrenStubs[1] as RsSymFieldStub
+        val nameField = if (stub.psi.containingFile.virtualFile.isConstantFile()) {
+            stub.childrenStubs[0] as RsSymFieldStub
+        } else {
+            stub.childrenStubs[1] as RsSymFieldStub
+        }
         sink.occurrence(RsSymbolIndex.KEY, nameField.value)
     }
 }