limit the fieldFlowBranchLimit for the regexp tracker to improve performance

erik-krogh · erik-krogh · commit f516ccb4e2c2 · 2023-01-18T09:31:04.000+01:00
diff --git a/ruby/ql/lib/codeql/ruby/regexp/internal/RegExpConfiguration.qll b/ruby/ql/lib/codeql/ruby/regexp/internal/RegExpConfiguration.qll
@@ -81,6 +81,8 @@ class RegExpConfiguration extends Configuration {
         nodeTo.asExpr().(CfgNodes::ExprNodes::StringlikeLiteralCfgNode).getAComponent()
     )
   }
+
+  override int fieldFlowBranchLimit() { result = 1 }
 }
 
 private DataFlow::LocalSourceNode trackRegexpType(TypeTracker t) {

Original file line number	Diff line number	Diff line change
`@@ -81,6 +81,8 @@ class RegExpConfiguration extends Configuration {`
`81`	`81`	`nodeTo.asExpr().(CfgNodes::ExprNodes::StringlikeLiteralCfgNode).getAComponent()`
`82`	`82`	`)`
`83`	`83`	`}`
	`84`	`+`
	`85`	`+ override int fieldFlowBranchLimit() { result = 1 }`
`84`	`86`	`}`
`85`	`87`
`86`	`88`	`private DataFlow::LocalSourceNode trackRegexpType(TypeTracker t) {`