# Internal structure of Landline lib

Note: If you want to start hacking on Landline and extending it, follow this
layout as closely as possible.

## Core classes

These are core classes of Landline and they are loaded as soon as the library is loaded.

- Landline::Path [path.rb]
- Landline::PathContext [path.rb]
- Landline::Probe [probe.rb]
- Landline::ProbeContext [probe.rb]
- Landline::Node (parent of Path and Probe) [node.rb]
- Landline::Server (Rack application interface) [server.rb]
- Landline::ServerContext [server.rb]
- Landline::Request (Rack request wrapper) [request.rb]
- Landline::Response (Rack response wrapper) [response.rb]
- Landline::Pattern [pattern\_matching.rb]
- Landline::TemplateContext [tempalte.rb]
- Landline::Template (template engine interface) [template.rb]

## Patterns

These are classes that Landline::Pattern can interface with to create Patterns.

- Landline::PatternMatching::ReMatch [pattern\_matching/rematch.rb]
- Landline::PatternMatching::Glob [pattern\_matching/glob.rb]

## DSL Method mixins

These are module mixins that add common methods to DSL bindings.

- Landline::DSL::PathConstructors [dsl/constructors\_path.rb]
- Landline::DSL::ProbeConstructures [dsl/constructors\_probe.rb]
- Landline::DSL::CommonMethods [dsl/methods\_common.rb]
- Landline::DSL::PathMethods [dsl/methods\_path.rb]
- Landline::DSL::ProbeMethods [dsl/methods\_probe.rb]
- Landline::DSL::TemplateMethods [dsl/methods\_template.rb]

## Utilities

These are self-contained classes and methods that add extra functionality to Landline.

- Landline::Util::Lookup [util/lookup.rb]
- Landline::PatternMatching [pattern\_matching/util.rb]
- Landline::Cookie (class) [util/cookie.rb]
- Landline::Error (class) [util/errors.rb]
- Landline::ParsingError (class) [util/errors.rb]
- Landline::Util (html/http utilities) [util/html.rb]
- Landline::MIME (MIME extension to type association) [util/mime.rb]
- Landline::Util::ParserSorting (functions for sorting form/query hashes) [util/parsesorting.rb]
- Landline::Util::Query (query class) [util/query.rb]
- Landline::Util::FormPart (formparser struct) [util/multipart.rb]
- Landline::Util::MultipartParser (multipart form parser) [util/multipart.rb]
- Landline::Util::HeaderRegexp (helper regexps for headers) [util/parseutils.rb]
- Landline::Util (parser methods) [util/parseutils.rb]

## Probe subclasses

These are reactive request handlers with their own semantics, if needed.

- Landline::Handlers::Handler [probe/handler.rb]
- Landline::Handlers::GETHandler [probe/http\_method.rb]
- Landline::Handlers::POSTHandler [probe/http\_method.rb]
- Landline::Handlers::HEADHandler [probe/http\_method.rb]
- Landline::Handlers::PUTHandler [probe/http\_method.rb]
- Landline::Handlers::DELETEHandler [probe/http\_method.rb]
- Landline::Handlers::CONNECTHandler [probe/http\_method.rb]
- Landline::Handlers::OPTIONSHandler [probe/http\_method.rb]
- Landline::Handlers::TRACEHandler [probe/http\_method.rb]
- Landline::Handlers::PATCHHandler [probe/http\_method.rb]
- Landline::Handlers::Serve

## Path subclasses

These are navigation handlers with their own semantics.

(currently none)

## Template engine interfaces

These are uniform interfaces for various templating engines.

- Landline::Templates::ERB [template/erb.rb]
- Landline::Templates::Erubi [template/erubi.rb]