ControlFlow: Rename getAPhiInput to getAnInput.

Author: aschackmull

java/ql/lib/semmle/code/java/dataflow/SSA.qll

@@ -336,6 +336,9 @@ class SsaPhiNode extends SsaVariable instanceof PhiNode {
   /** Gets an input to the phi node defining the SSA variable. */
   SsaVariable getAPhiInput() { this.hasInputFromBlock(result, _) }
 
+  /** Gets an input to the phi node defining the SSA variable. */
+  SsaVariable getAnInput() { this.hasInputFromBlock(result, _) }
+
   /** Holds if `inp` is an input to the phi node along the edge originating in `bb`. */
   predicate hasInputFromBlock(SsaVariable inp, BasicBlock bb) {
     phiHasInputFromBlock(this, inp, bb)

java/ql/lib/semmle/code/java/dataflow/internal/BaseSSA.qll

@@ -366,6 +366,9 @@ class BaseSsaPhiNode extends BaseSsaVariable instanceof Impl::PhiNode {
   /** Gets an input to the phi node defining the SSA variable. */
   BaseSsaVariable getAPhiInput() { this.hasInputFromBlock(result, _) }
 
+  /** Gets an input to the phi node defining the SSA variable. */
+  BaseSsaVariable getAnInput() { this.hasInputFromBlock(result, _) }
+
   /** Holds if `inp` is an input to the phi node along the edge originating in `bb`. */
   predicate hasInputFromBlock(BaseSsaVariable inp, BasicBlock bb) {
     phiHasInputFromBlock(this, inp, bb)

shared/controlflow/codeql/controlflow/ControlFlow.qll

@@ -64,7 +64,7 @@ signature module InputSig<LocationSig Location, TypSig ControlFlowNode, TypSig B
     /** Holds if `inp` is an input to the phi node along the edge originating in `bb`. */
     predicate hasInputFromBlock(SsaDefinition inp, BasicBlock bb);
 
-    SsaDefinition getAPhiInput();
+    SsaDefinition getAnInput();
   }
 
   class SsaUncertainDefinition extends SsaDefinition {
@@ -663,8 +663,8 @@ module Make<
         or
         exists(SsaPhiNode phi |
           phi.definesAt(var, loopEntry, _) and
-          phi.getAPhiInput+() = def and
-          def.(SsaPhiNode).getAPhiInput*() = phi
+          phi.getAnInput+() = def and
+          def.(SsaPhiNode).getAnInput*() = phi
         )
       )
     }