Eclipse DemoCamp Zurich - SnipMatch in Recommenders 2.1

These slides present SnipMatch, an extensible snippet search and snippet completion engine for Eclipse.

Technology Sports

Crowdsourcing,
Code Snippets, and more
What Eclipse Code Recommenders has been up to for Luna
@MarcelBruch
+MarcelBruch

ONCE UPON A TIME…
„Based on a true story…“

3
That guy had a smart idea how to
make Eclipse even better…
Thanks to Eike Stepper for 
permission to reuse his portraits :-)

How can I read
all extensions known to the
system?
5

6
Hey, this was done so many
times before. It should be
easy to ﬁnd an example…

$But indeed there is an example… 10 IExtensionRegistry registry = Platform.getExtensionRegistry(); IExtensionPoint point = registry.getExtensionPoint(EXT_POINT_ID); ! for (IExtension ext : point.getExtensions()) { for (IConfigurationElement elem : ext.getConfigurationElements()) { MyProvider provider = elem.createExecutableExtension(CLASS_ATTR); res.add(provider); } } return res;$

SNIPMATCH
„An (extensible) code snippet completion and search engine for Eclipse“

Live Demo
12
Searching for snippets inside the Snipmatch view

Live Demo
13
Searching for snippet in lightweight snippet search window

Live Demo
14
Inserting snippets with links, new var names, …

Live Demo
15
Create snippet from text selection

Live Demo
16
Xtext editor with syntax highlighting…

17
Hmm, if creating own
snippets is so simple, why not
share them with others?

Snippets
arrayadd
arraymerge
...
Awesome
New
Snippet
Snippets
arrayadd
arraymerge
...
Snippets
arrayadd
arraymerge
...
Snippets
arrayadd
arraymerge
...
Crowdsourcing code snippets?
18

Snippet
Repository
Snippets
arrayadd
arraymerge
...
Awesome
new
Snippet
Snippets
arrayadd
arraymerge
...
Snippets
arrayadd
arraymerge
...
Snippets
arrayadd
arraymerge
...
Crowdsourcing code snippets!
19

Live Demo
20
Sharing snippets via Gerrit Review System…

Snipmatch 2.2 Roadmap for SR1
• Class-path dependent snippet proposals:
• No SWT on your class-path? => No SWT snippets.
• Xtext based snippet editor:
• with syntax highlighting, code completion,error detection. 
(preview demo’ed)
• Multiple repositories:
• Gerrit, git, ﬁle, db, …
• General snippet goodness:
• Create snippets from text selection.
• Voting and commenting on snippets (SR2 maybe).
• Many more (crowdsourced and mined) snippets!
22

Credits
• Credits for the emotion-portraits go to Eike Stepper.
• Thanks for permission to use them 
here at the Eclipse Democamp Zürich.
26

Crowdsourcing,
Code-Snippets, and more
What Eclipse Code Recommenders has been up to for Luna
@recommenders
+code recommenders

More frameworks
31
0
950
1900
2850
3800
Kepler Luna (M3) Luna (M7) Luna

Crowdsourcing code completion?
32
Codetrails Connect Community Edition, 
Install from http://www.codetrails.com/connect

!
void ctor() {
!
List l = new A…
}
Crowdsourcing constructor completion
33
What is the mostly likely completion a
developer looks for in this particular situation ?

!
void ctor() {
!
List l = new A…
}
Use (costly) subtype checks
34
Codetrails Completion Tweaks for Eclipse, 
Install from http://download.codetrails.com/updates/connect/

But you may also crowdsource this...
35
It learns from you. From the very 1st moment.
Codetrails Connect Community Edition, 
Install from http://download.codetrails.com/updates/connect/

!
void quickfix() {
!
List l = new A
}
How about ﬁxing quick-ﬁx?
36
Not ﬁxed yet. But could be easily - when you start sharing your knowledge…

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2010 06-24 karlsruher entwicklertag