Additional Minor Features
A number of minor features are listed in the following format:
EP: fully.qualified.extensionPointName - Extension Point Name (must be specified in plugin.xml)
com.extensionPoint.class description text - Extension Point class/interface to provide functionality
- Sample 1 - Sample implementation
Brace Matching
EP: com.intellij.lang.braceMatcher
PairedBraceMatcher
Returns an array of brace pairs (BracePair) specifying the characters for the opening and closing braces and the lexer token types for these characters.
(In principle, it is possible to return multi-character tokens, like "begin" and "end", as the start and end tokens of a brace pair.
The IDE will match such braces, but the highlighting for such braces will not be entirely correct.)
Certain types of braces can be marked as structural. Structural braces have higher priority than regular braces: they are matched with each other even if there are unmatched braces of different types between them. An opening non-structural brace is not matched with a closing one if one of them is inside a pair of matched structural braces and another is outside.
Comment Code
EP: com.intellij.lang.commenter
Commenter returns the prefix for the line comment, and the prefix and suffix for the block comment if supported by the language.
Code Folding
EP: com.intellij.lang.foldingBuilder
FoldingBuilder returns the list of foldable text ranges (as an array of FoldingDescriptor objects), the replacement text which is shown for each range when it is folded, and the default state of each folding region (folded or unfolded).
Join Lines
EP: com.intellij.joinLinesHandler
JoinLinesHandlerDelegate allows extending support smart/semantic Edit | Join Lines (e.g., String literal split on multiple lines).
Smart Enter
EP: com.intellij.lang.smartEnterProcessor
SmartEnterProcessor handles Edit | Complete Statement (e.g., autocomplete missing semicolon/parentheses).
Naming Suggestions
EP: com.intellij.nameSuggestionProvider
NameSuggestionProvider provides name suggestions for the given element, e.g., for Rename refactoring.
Semantic Highlight Usages
EP: com.intellij.highlightUsagesHandlerFactory
HighlightUsagesHandlerFactory allows highlighting e.g., Exit Points or Exceptions.
Parameter Info
EP: com.intellij.codeInsight.parameterInfo
ParameterInfoHandler provides support for View | Parameter Info.
To Do View
EP: n/a
ParserDefinition.getCommentTokens() must return the set of tokens treated as comments to populate To Do View.
Context Info
EP: com.intellij.declarationRangeHandler
DeclarationRangeHandler provides View | Context Info for custom languages with structure view implementation based on a TreeBasedStructureViewBuilder.
Spellchecking
EP: com.intellij.spellchecker.support
SpellcheckingStrategy provides Tokenizer to use for given PsiElement (return EMPTY_TOKENIZER for no spellchecking).
Reference Injection
EP: com.intellij.referenceInjector
ReferenceInjector allows users to inject pre-defined references (e.g., "Encoding", "File Reference") into PsiLanguageInjectionHost elements (IntelliLang plugin required).
Color Preview/Chooser
EP: com.intellij.colorProvider
ElementColorProvider renders gutter icon for element containing color information.