EclipseCon Europe 2016, S. Cela, M.Istria: Eclipse Generic and Extensible Editor and Language Servers

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Overview of the Eclipse Platform Generic and Extensible editor and how it can integrate with the Language Server Protocol (LSP)

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- You want to add features for a given language, not much for an editor.
- Extensions register themselves against content-types, the editor picks
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- You can either create a custom content-type or use a pre-defined one

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Underlying Vision
1. Productivity & Time to market: Make possible quick language support with
very little boilerplate
2. Separation of concerns: Abstract out the provider of the ‘smartness’ for a
given language
a. Opens the road to using language servers
3. Quality, maintenance & DRY: do we need as many text editors as
languages
a. More consistency
b. More factorization (less maintenance cost)
c. Less memory consumption

Language Server Protocol (LSP)
LSP defines a unified way to get edition assist (completion, hover,
rename…) from whatever “blackbox”.

LSP in Eclipse
Many LSP operations already doable with Eclipse commands and
handlers: hook LSP-based handler on commands when supported.
Hooking hover and completion now doable with Eclipse Generic
Editor

LSP in Eclipse (cont’d)
Eclipse IDE user
/ide
Generic
and
extensible
editor
LSP
Integration
Hover
Completion
OmniSharp
Launch Config
VSCode-CSS
Launch Config
VSCode-JSON
Launch Config
Whatever
Launch Config
Local
Local
?
Protocol over * streams
LSP4J
workspace

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http://bugs.eclipse.org/500892
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Demo schedule
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2. Language server demo: C# editor

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Use it now!
1. Try it out!
a. We have a plug-in template wizard for that
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