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* [webhelp] Fixes for TXP00152, TXP00002, test build 27 Jul 22:26 * [webhelp] Fixes for Part #4 TXP00010, EXCEPT decimal numbers in section titles * [webhelp] Fixes for Part #5 TXP00017 * [webhelp] Fixes for Part #4 TXP00010 - removed numbers from page section titles in "Custom Language Support Tutorial" and "Testing a Custom Language Plugin". * [webhelp] Removed numbers from page section titles in rest of project *.md files. * [new webhelp] Build #44 changes * [new webhelp] Maintenance merge from master * [new webhelp] Add placeholder file for webhelp import. * [webhelp] Correct redirects for file name changes * [webhelp] TOC not needed in webhelp * [format] {:toc} not needed for webhelp * add {:disable-links} to ensure demo links are not interpreted as real links. * Put all badges on the same line to simplify composition. * formatter.md: fix upsource link * fix some links * api_changes_list.md: remove note * migrate to webhelp - initial * fix GH edit URL * remove sdkdocs-template setup in VCS config * remove recently_updated.md * restore COC/CONTRIBUTING.md * api_changes_list.md: remove note * useful_links.md: IPE Co-authored-by: JohnHake <john.hake@jetbrains.com> Co-authored-by: Yann Cébron <yann.cebron@jetbrains.com>
59 lines
1.6 KiB
Markdown
59 lines
1.6 KiB
Markdown
[//]: # (title: PSI Cookbook)
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<!-- 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. -->
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This page gives recipes for the most common operations for working with the PSI (Program Structure Interface).
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Unlike [Developing Custom Language Plugins](custom_language_support.md), it talks about working with the PSI of existing languages (such as Java).
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> Please see also [Working with PSI efficiently](performance.md#working-with-psi-efficiently).
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>
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{type="tip"}
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### How do I find a file if I know its name but don't know the path?
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`FilenameIndex.getFilesByName()`
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### How do I find where a particular PSI element is used?
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`ReferencesSearch.search()`
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### How do I rename a PSI element?
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`RefactoringFactory.createRename()`
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### How can I cause the PSI for a virtual file to be rebuilt?
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`FileContentUtil.reparseFiles()`
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## Java Specific
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### How do I find all inheritors of a class?
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`ClassInheritorsSearch.search()`
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### How do I find a class by qualified name?
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`JavaPsiFacade.findClass()`
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### How do I find a class by short name?
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`PsiShortNamesCache.getInstance().getClassesByName()`
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### How do I find a superclass of a Java class?
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`PsiClass.getSuperClass()`
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### How do I get a reference to the containing package of a Java class?
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```java
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PsiJavaFile javaFile = (PsiJavaFile) psiClass.getContainingFile();
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PsiPackage pkg = JavaPsiFacade.getInstance(project).findPackage(javaFile.getPackageName());
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```
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or
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`com.intellij.psi.util.PsiUtil.getPackageName()`
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### How do I find the methods overriding a specific method?
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`OverridingMethodsSearch.search()` |