Merge pull request #159 from github/hvitved/herdoc-body-rank-performance

Improve performance of `HereDoc::getBody()`

ql/src/codeql_ruby/ast/Literal.qll

@@ -523,6 +523,16 @@ class CharacterLiteral extends Literal, TCharacterLiteral {
   final override string getAPrimaryQlClass() { result = "CharacterLiteral" }
 }
 
+pragma[noinline]
+private predicate rankHeredocBody(File f, Generated::HeredocBody b, int i) {
+  b =
+    rank[i](Generated::HeredocBody b0 |
+      f = b0.getLocation().getFile()
+    |
+      b0 order by b0.getLocation().getStartLine(), b0.getLocation().getStartColumn()
+    )
+}
+
 /**
  * A "here document". For example:
  * ```rb
@@ -589,12 +599,7 @@ class HereDoc extends StringlikeLiteral, THereDoc {
         |
           b order by b.getLocation().getStartLine(), b.getLocation().getStartColumn()
         ) and
-      result =
-        rank[i](Generated::HeredocBody b |
-          f = b.getLocation().getFile()
-        |
-          b order by b.getLocation().getStartLine(), b.getLocation().getStartColumn()
-        )
+      rankHeredocBody(f, result, i)
     )
   }