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Code Block Finder

A code block finder finds the snapshot range of a logical code block that contains a specified snapshot range. This service is used to drive the Code Block Selection feature.

Basic Concepts

Code block finders are classes implementing ICodeBlockFinder that can scan through text, tokens, or abstract syntax tree (AST) data to locate the snapshot range of a code block that contains the specified snapshot range. Once the code block finder language service is implemented, SyntaxEditor's Code Block Selection feature can be used.

Registering with a Language

Any object that implements ICodeBlockFinder can be associated with a syntax language by registering it as an ICodeBlockFinder service on the language.

This code creates a LLParseDataCodeBlockFinder object and registers it with the syntax language that is already declared in the language variable:

LLParseDataCodeBlockFinder finder = new LLParseDataCodeBlockFinder();
language.RegisterCodeBlockFinder(matcher);
Note

The SyntaxLanguageExtensions.RegisterCodeBlockFinder method in the code snippet above is a helper extension method that gets added to ISyntaxLanguage objects when the ActiproSoftware.Text namespace is imported. See the Service Locator Architecture topic for details on registering and retrieving various service object instances, both via extension methods and generically, as there are some additional requirements for using the extension methods.