[//]: # (title: Controlling Highlighting) The results of analyzing code by several mechanisms provided by the IntelliJ Platform ([Syntax errors](syntax_errors.md), Annotators, [Inspections](code_inspections.md)) are converted to highlighting information used to highlight the code in the editor. However, in some contexts, provided highlighting information is invalid or unnecessary. Consider a tool that allows changing Java language's syntax by implicitly generating getters and setters for annotated fields during the build, so they can be omitted in class implementation: ```java class Person { @GetterSetter private int age; } // usage: person.setAge(47); // valid at runtime ``` Java support in IntelliJ IDEA would report such a setter usage as an unresolved code symbol. Error annotation would be valid from the Java language point of view but invalid in a project using such a tool. Another case where highlighting code issues is unnecessary is old file revisions from VCS. For example, the old version of a file could be created in a different project context, with other libraries configured. If the old file version used the library that is not used by the project currently, it would cause reporting false-positive code issues. The IntelliJ Platform exposes the extension point allowing a plugin to decide which highlighting information will be visible in the editor. To do that a plugin has to provide implementation of [`HighlightInfoFilter`](upsource:///platform/analysis-impl/src/com/intellij/codeInsight/daemon/impl/HighlightInfoFilter.java) and register it in the `com.intellij.daemon.highlightInfoFilter` EP. The `HighlightInfoFilter` class contains a single method `accept()` which should return true if a given `HighlightInfo` should be visible in the editor and return false to ignore it. **Examples:** - [`DebuggerHighlightFilter`](upsource:///java/debugger/impl/src/com/intellij/debugger/engine/evaluation/DebuggerHighlightFilter.java) disabling reporting unhandled exceptions in debugger code editor - [`LombokHighlightErrorFilter`](upsource:///plugins/lombok/src/main/java/de/plushnikov/intellij/plugin/extension/LombokHighlightErrorFilter.java) disabling false-positive error reports in a project using Lombok **See also:** - [Controlling Syntax Errors Highlighting](syntax_errors.md#controlling-syntax-errors-highlighting)