C#: Share qualified name module for model editor queries

Author: koesie10

csharp/ql/lib/semmle/code/csharp/dataflow/internal/ExternalFlow.qll

@@ -269,7 +269,7 @@ private predicate elementSpec(
   UnboundValueOrRefType t
 ) {
   elementSpec(namespace, type, subtypes, name, signature, ext) and
-  QN::hasQualifiedName(t, namespace, type)
+  hasQualifiedTypeName(t, namespace, type)
 }
 
 private class UnboundValueOrRefType extends ValueOrRefType {
@@ -337,7 +337,7 @@ Declaration interpretBaseDeclaration(string namespace, string type, string name,
   exists(UnboundValueOrRefType t | elementSpec(namespace, type, _, name, signature, _, t) |
     result =
       any(Declaration d |
-        QN::hasQualifiedName(d, namespace, type, name) and
+        hasQualifiedMethodName(d, namespace, type, name) and
         (
           signature = ""
           or
@@ -439,6 +439,19 @@ private module QualifiedNameInput implements QualifiedNameInputSig {
 
 private module QN = QualifiedName<QualifiedNameInput>;
 
+/** Holds if declaration `d` has the qualified name `qualifier`.`name`. */
+predicate hasQualifiedTypeName(Type t, string namespace, string type) {
+  QN::hasQualifiedName(t, namespace, type)
+}
+
+/**
+ * Holds if declaration `d` has name `name` and is defined in type `type`
+ * with namespace `namespace`.
+ */
+predicate hasQualifiedMethodName(Declaration d, string namespace, string type, string name) {
+  QN::hasQualifiedName(d, namespace, type, name)
+}
+
 pragma[nomagic]
 private string parameterQualifiedType(Parameter p) {
   exists(string qualifier, string name |

csharp/ql/src/utils/modeleditor/ModelEditor.qll

@@ -1,7 +1,6 @@
 /** Provides classes and predicates related to handling APIs for the VS Code extension. */
 
 private import csharp
-private import semmle.code.csharp.commons.QualifiedName
 private import semmle.code.csharp.dataflow.FlowSummary
 private import semmle.code.csharp.dataflow.internal.FlowSummaryImpl as FlowSummaryImpl
 private import semmle.code.csharp.dataflow.internal.ExternalFlow
@@ -121,22 +120,12 @@ string methodClassification(Call method) {
  * Gets the fully qualified name of the type `t`.
  */
 private string qualifiedTypeName(string namespace, Type t) {
-  exists(string type | QN::hasQualifiedName(t, namespace, type) | result = type)
+  exists(string type | hasQualifiedTypeName(t, namespace, type) | result = type)
 }
 
 /**
  * Gets the fully qualified name of the callable `c`.
  */
 private string qualifiedCallableName(string namespace, string type, Callable c) {
-  exists(string name | QN::hasQualifiedName(c, namespace, type, name) | result = name)
+  exists(string name | hasQualifiedMethodName(c, namespace, type, name) | result = name)
 }
-
-private module QualifiedNameInput implements QualifiedNameInputSig {
-  string getUnboundGenericSuffix(UnboundGeneric ug) {
-    result =
-      "<" + strictconcat(int i, string s | s = ug.getTypeParameter(i).getName() | s, "," order by i)
-        + ">"
-  }
-}
-
-private module QN = QualifiedName<QualifiedNameInput>;