hxuanyu/intellij-sdk-code-samples
1
0
Fork 0
mirror of https://github.com/JetBrains/intellij-sdk-code-samples.git synced 2025-07-30 18:27:49 +08:00
Code Issues Packages Projects Releases Wiki Activity

external annotator: note required language attribute

Browse Source
This commit is contained in:
Yann Cébron 2021-05-03 11:27:46 +02:00
parent fc381c3c8b
commit 3940031f77
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
topics/reference_guide/custom_language_support/syntax_highlighting_and_error_highlighting.md
View File

@ -1,6 +1,6 @@
[//]: # (title: Syntax Highlighting and Error Highlighting)
<!-- Copyright 2000-2020 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
<!-- Copyright 2000-2021 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
The class used to specify how a particular range of text should be highlighted is called [`TextAttributesKey`](upsource:///platform/core-api/src/com/intellij/openapi/editor/colors/TextAttributesKey.java).
An instance of this class is created for every distinct type of item that should be highlighted (keyword, number, string, etc.).
@ -88,7 +88,7 @@ In previous versions, call `AnnotationHolder.createInfoAnnotation()` with an emp
## External Tool
Finally, if the custom language employs external tools for validating files in the language (for example, uses the Xerces library for XML schema validation), it can provide an implementation of the [`ExternalAnnotator`](upsource:///platform/analysis-api/src/com/intellij/lang/annotation/ExternalAnnotator.java) interface and register it in `com.intellij.externalAnnotator` extension point.
Finally, if the custom language employs external tools for validating files in the language (for example, uses the Xerces library for XML schema validation), it can provide an implementation of the [`ExternalAnnotator`](upsource:///platform/analysis-api/src/com/intellij/lang/annotation/ExternalAnnotator.java) interface and register it in `com.intellij.externalAnnotator` extension point (`language` attribute must be specified).
The [`ExternalAnnotator`](upsource:///platform/analysis-api/src/com/intellij/lang/annotation/ExternalAnnotator.java) highlighting has the lowest priority and is invoked only after all other background processing has completed.
It uses the same [`AnnotationHolder`](upsource:///platform/analysis-api/src/com/intellij/lang/annotation/AnnotationHolder.java) interface for converting the output of the external tool into editor highlighting.