C++: Rename resolve to resolveClass, and remove unused isElement

cpp/ql/src/semmle/code/cpp/Class.qll

@@ -2,7 +2,7 @@ import semmle.code.cpp.Type
 import semmle.code.cpp.UserType
 import semmle.code.cpp.metrics.MetricClass
 import semmle.code.cpp.Linkage
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A class type [N4140 9].

cpp/ql/src/semmle/code/cpp/Element.qll

@@ -1,6 +1,6 @@
 import semmle.code.cpp.Location
 private import semmle.code.cpp.Enclosing
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * Get the `@element` that represents this `@element`.
@@ -10,7 +10,7 @@ private import semmle.code.cpp.internal.Type
  */
 private cached @element resolveElement(@element e) {
   if isClass(e)
-  then result = resolve(e)
+  then result = resolveClass(e)
   else result = e
 }
 

cpp/ql/src/semmle/code/cpp/Enum.qll

@@ -1,5 +1,5 @@
 import semmle.code.cpp.Type
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ enum [N4140 7.2].

cpp/ql/src/semmle/code/cpp/FriendDecl.qll

@@ -1,5 +1,5 @@
 import semmle.code.cpp.Declaration
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C++ friend declaration [N4140 11.3].

cpp/ql/src/semmle/code/cpp/Function.qll

@@ -5,7 +5,7 @@ import semmle.code.cpp.Parameter
 import semmle.code.cpp.exprs.Call
 import semmle.code.cpp.metrics.MetricFunction
 import semmle.code.cpp.Linkage
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ function [N4140 8.3.5]. Both member functions and non-member

cpp/ql/src/semmle/code/cpp/ObjectiveC.qll

@@ -1,5 +1,5 @@
 import semmle.code.cpp.Class
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * DEPRECATED: Objective-C is no longer supported.

cpp/ql/src/semmle/code/cpp/Parameter.qll

@@ -1,6 +1,6 @@
 import semmle.code.cpp.Location
 import semmle.code.cpp.Declaration
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ function parameter or catch block parameter.

cpp/ql/src/semmle/code/cpp/Specifier.qll

@@ -1,5 +1,5 @@
 import semmle.code.cpp.Element
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ specifier: `friend`, `auto`, `register`, `static`, `extern`,

cpp/ql/src/semmle/code/cpp/Type.qll

@@ -1,7 +1,7 @@
 import semmle.code.cpp.Element
 import semmle.code.cpp.Member
 import semmle.code.cpp.Function
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ type.

cpp/ql/src/semmle/code/cpp/TypedefType.qll

@@ -1,5 +1,5 @@
 import semmle.code.cpp.Type
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ typedef type. See 4.9.1.

cpp/ql/src/semmle/code/cpp/UserType.qll

@@ -2,7 +2,7 @@ import semmle.code.cpp.Declaration
 import semmle.code.cpp.Type
 import semmle.code.cpp.Member
 import semmle.code.cpp.Function
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ user-defined type. Examples include `Class`, `Struct`, `Union`,

cpp/ql/src/semmle/code/cpp/Variable.qll

@@ -1,7 +1,7 @@
 import semmle.code.cpp.Element
 import semmle.code.cpp.exprs.Access
 import semmle.code.cpp.Initializer
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ variable.

cpp/ql/src/semmle/code/cpp/exprs/Cast.qll

@@ -1,5 +1,5 @@
 import semmle.code.cpp.exprs.Expr
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ cast expression or similar unary expression that doesn't affect the logical value of its operand.

cpp/ql/src/semmle/code/cpp/exprs/Expr.qll

@@ -1,7 +1,7 @@
 
 import semmle.code.cpp.Element
 private import semmle.code.cpp.Enclosing
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ expression.

cpp/ql/src/semmle/code/cpp/exprs/ObjectiveC.qll

@@ -1,7 +1,7 @@
 import semmle.code.cpp.exprs.Expr
 import semmle.code.cpp.Class
 import semmle.code.cpp.ObjectiveC
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * DEPRECATED: Objective-C is no longer supported.

cpp/ql/src/semmle/code/cpp/internal/Type.qll → cpp/ql/src/semmle/code/cpp/internal/ResolveClass.qll

@@ -35,7 +35,7 @@ cached private module Cached {
    * multiple complete classes have the same name, this predicate may have
    * multiple results.
    */
-  cached @usertype resolve(@usertype c) {
+  cached @usertype resolveClass(@usertype c) {
     hasCompleteTwin(c, result)
     or
     (not hasCompleteTwin(c, _) and result = c)
@@ -48,8 +48,4 @@ cached private module Cached {
     (usertypes(t,_,1) or usertypes(t,_,2) or usertypes(t,_,3) or usertypes(t,_,6)
     or usertypes(t,_,10) or usertypes(t,_,11) or usertypes(t,_,12))
   }
-
-  cached predicate isElement(@element e) {
-    isClass(e) implies e = resolve(_)
-  }
 }

cpp/ql/src/semmle/code/cpp/stmts/Stmt.qll

@@ -1,6 +1,6 @@
 import semmle.code.cpp.Element
 private import semmle.code.cpp.Enclosing
-private import semmle.code.cpp.internal.Type
+private import semmle.code.cpp.internal.ResolveClass
 
 /**
  * A C/C++ statement.