erlang c++ ruby c - jugs€¦ · erlang fortran c programming languages are not enough. high-level...

06.11.2009

1

Programming Modeling

from

to

Markus VoelterIndependent/itemis

[email protected]


from

to

…and back again

Markus VoelterIndependent/itemis

[email protected]

„Houston,we have a

Problem!“

Programming Languages

C# C++

JavaPython

GroovyRuby

Erlang

CFortran

06.11.2009

2

Programming Languagesare not

enough.expressive

C# C++

JavaPython

GroovyRuby

Erlang

CFortran


enough.high-level

C# C++

JavaPython

GroovyRuby

Erlang

CFortran


enough.abstract

C# C++

JavaPython

GroovyRuby

Erlang

CFortran


enough.domain-specific

C# C++

JavaPython

GroovyRuby

Erlang

CFortran

Programming Languagesare notenough.

C# C++

JavaPython

GroovyRuby

Erlang

CFortran

Programming LanguagesFormats

C# C++

JavaPython

GroovyRuby

Erlang

CFortran

HTML

XMLCSSyaml

json

06.11.2009

3


C# C++

JavaPython

GroovyRuby

Erlang

CFortran

HTML

XMLCSSyaml

json

JEEWPF

Rails

Django

JMS

lift

Frameworks


C# C++

JavaPython

GroovyRuby

Erlang

CFortran

HTML

XMLCSSyaml

json

JEEWPF

Rails

Django

JMS

lift

Frameworksare not enough.

So?

Modeling

Modeling… Higher Level

… Domain Specific

Interpretation… Code Generation

Concepts & Notations

Modeling… Higher Level

… Domain Specific

Interpretation… Code Generation

Concepts & Notations

Solves theProblem!

06.11.2009

4

But:Modeling Tools

Programming Tools!=

Different Worlds

Modeling Tool

Modeling Tool!=

Different Worlds Different WorldsMix Models and Programs

Different WorldsAST Navigation & Query

Mix Models and Programs



Integration of 3GL code

06.11.2009

5



Integration of 3GL codeCode Constraints pareCom

pareCom

Domain SpecificNotations

andAbstractions

LibrariesFrameworks

(Fluent) APIs

Flexible! Limited!

GraphicalTextual

FormsTables

TextualTrees

Limited!Flexible!

CustomizeGenerator

orInterpreter

Limited!Flexible!

ReflectionMeta ProgramsOpen Compilers

06.11.2009

6

Define customQueryorNavigate

Limited!Flexible!

AST APIsStatic Analysis

Transformor

Regex

CustomValidationorError Checks

Limited!Flexible!

IDE pluginsStatic AnalysisOpen Compilers

DifferentRepresentations

andProjections

Limited!Flexible!

Text is TextCode FoldingTree ViewsVisualizations

Limited!Flexible?

Python-to-C-likeInternal DSLs

Mixingand

ComposingLanguages

Embed-As-StringSpecific: LINQ

Mature!Brittle!

IDE Support

Scalable

Modeling Tools…!?

Usable

Mature!Brittle!

Testing

Debugging

?

Refactoring

06.11.2009

7

Mature!Brittle!

Branching

VersioningDiff, Merge

for some tools…

Gets theGets some

some people doubt that…

Job Done!Jobs done.everybody agrees…

Whythe difference?

History?

Modeling Programming Modeling Programming

… (Mostly) Textual Notations

… Concrete Syntax Storage

… (Fancy) ASCII Editors

… Read-Only Visualizations

06.11.2009

8

Modeling

… (Mostly) GraphicalNotations

… Abstract Syntax Storage

… Projecting Editors

… Different editableviews for model

Programming





Whythe difference?

It is time for … … a Different Perspective

Programmingthe way we do

Modeling?

Modelingthe way we do

Programming?

Modeling Programming


====

06.11.2009

9

Where do we go from here?

We don‘t want to

we want tomodel,

program!

We don‘t want to

we want tomodel,

program!… at different levels of abstaction

… from different viewpoints

… integrated!

We don‘t want to

we want tomodel,

program!… with different degrees of

… with suitable notations

… with suitable expressiveness

domain-specificity

06.11.2009

10

We don‘t want to

we want tomodel,

program!

precise and tool processableAnd always:

EnablingTechnologies


AvailableTooling

A vision forprogramming


AvailableTooling

06.11.2009

11



AdvancedParser

Generators

Modeling as Programmig





Custom Syntax

GraphicalTextualSymbolic++

IDESupport

TeamworkDebuggingCustom Editors

CompleteSymbolicIntegration

Goto DefFind RefsRefactoring

06.11.2009

12

Xtext-like Toolsprovide editor support

TeamworkCustom Editors

Goto DefFind Refs

Refactoring

UnicodeLimited to

how to handlenon-character symbols

TextGraphics !=

two worlds…

separate editors… per syntax/viewpoint… models can still be ref integrated


ProjectionalEditing

Parser-basedtext… to tree… to text

06.11.2009

13

Projectionaltree… to text-lookalike (editor)… to other trees … **+… to text

Programming as Modeling

… (Mostly) GraphicalNotations




Programming as Modeling

… (Mostly) Graphical Any kind ofNotations




Language

There‘s no parsing.

Unique Language Element Identity.

Unlimted language composition.

Composition

Textual

Graphical

Semi-Graphical

treated the same

can be mixed

like ASCII }box & line

mathematical

Flexible

NotationsAutomatic

IDE Extensiontool support is inherent

for languages build withprojectional tools

language definition

IDE definitionimplies

06.11.2009

14

MultipleNotations

… for the same concepts

e.g. in different contextsor for different tasks

PartialProjections

… different views… for different roles/people… only a particular variant

Storage!= Schema

… independent of language schema!variability annotations

… store arbitraty meta datachange logconflicting information

… „aspects“, overlay

ProgramsLive

think: spreadsheet

a change to one part of programcan lead to (dependent) changesin other parts

Tree Editing

… try to make it feel like text

… takes some getting used tobut: for more flexible notations a more general editing paradigm is needed

… is different from editing text

InfrastructureIntegration

… diff/merge must be in tool

… existing text tools don‘t work

… storage is not text

06.11.2009

15

ProprietaryTools

… no interop

… no standards

AvailableTooling

AvailableTooling

Eclipse

Xtext

http://eclipse.org/modeling http://eclipse.org/xtext

06.11.2009

16

Xtext: Specify Grammar Xtext: Gen. Meta Model

Xtext: Constraints Xtext: Generated Editor

Code Completion

Xtext: Generated Editor

Syntax ColoringCustom Keyword Coloring


06.11.2009

17

Realtime ConstraintValidation


CustomizableOutlines


Code Folding


Goto Definition Find ReferencesCross-File ReferencesModel as EMF



06.11.2009

18

DEMO I

Building DSLs with Eclipse Xtext

AvailableTooling

AvailableTooling

Jetbrains‘

ProgrammingMeta

System

IntelliJ IDEAResharper

also do…

Q3 2009released in

1.1 RC1currently

06.11.2009

19

Apache 2.0licensed under

Build new standalone DSLs

Build new standalone DSLsBuild DSLs that reuse parts

of other languages


of other languages

(MPS comes with BaseLanguage)

extend base language

Java++


of other languages

(MPS comes with BaseLanguage)

extend base languagebuild DSLs that reuse parts

of BaseLanguage

Java++

Java + Extension

Language Extension Example

06.11.2009

20

Java

ReadWriteLock l = …

l.readLock().lock();

try {

//code

} finally {

l.readLock().unlock();

}

Java + Extension


Old Java


l.readLock().lock();

try {

//code

} finally {

l.readLock().unlock();

}

Java + Extension


lock (l) {

//code

}


Old New

Structure Editor Typesystem Generator Structure Editor Typesystem Generator


06.11.2009

21



Structure Editor Typesystem Generator Language Extension ExampleResult behaves like a native

base language construct

06.11.2009

22

Language Extension ExampleResult behaves like a native

base language construct

Language Extension ExampleTranslated to regular Java code

based on the generator

package jaxdemo.sandbox.sandbox;

import java.util.concurrent.locks.Lock;

public class DemoClass {

private Lock lock;

public DemoClass() {try {this.getLock().lock();SharedResouce.instance().doSomething();

} finally {this.getLock().unlock();

}}

private Lock getLock() { return this.lock; }

}

Example LanguagesUI Language

Example LanguagesHTML Templates

Example LanguagesPersistent Classes

06.11.2009

23

DEMO II

Building DSLs with JetBrains MPS

A vision forProgramming


are not

enough.MODULAR


are not

enough.COMPOSABLE

06.11.2009

24


are not

enough.CONFIGURABLE


are not

enough.ADAPTABLE

Programming Language Syntax

is not

enough.FLEXIBLE

L

ab

c

d

e

f

gh

i

j

k

m

n

o

with many first class concepts!

Big Language?

L

Small Language?

and poweful conceptswith a few, orthogonal

my L

a b c

d e f

g h i

j k l

Modular Language

composable conceptswith many optional,

06.11.2009

25

Like frameworksand libraries,

Modular Language

Like frameworksand libraries,

but with syntaxand IDE support

Modular Language

Not a new idea…

Growing A Language(Guy L Steele)

06.11.2009

26

LanguageWorkbench

(Martin Fowler)

LanguageWorkbench

(Martin Fowler)

Freely

define

integratethem

languages and ?

LanguageWorkbench

(Martin Fowler)

usepersistent

abstractrepresentation

LanguageWorkbench

(Martin Fowler)

language ::=

schemaeditors

generators+

+

?

LanguageWorkbench

(Martin Fowler)

editingprojectional

06.11.2009

27

LanguageWorkbench

(Martin Fowler)

persist

incomplete

contradictoryinformation

or

LanguageWorkbench

(Martin Fowler)

powerful

editingtesting

refactoringdebugging

language definition

IDE definitionimplies

+groupware

LanguageWorkbench

(Martin Fowler)

support for„classical“

programming„classical“

modelingand

+Syntax

primarilytextual

Syntaxprimarilytextual

with more symbolsthink: mathematics


sometimesbox&line style

06.11.2009

28


sophisticatedvisualizations

Viewpoints

Viewpointssuitable

abstractions

notationsfor each

and

Viewpoints

Integrated

references

transitions

symbolic

seamlessand

via

ViewpointsBusiness

custompurpose-built

create/include

Viewpoints

CustomNotations

businessexpert integration

real

Business

06.11.2009

29

Viewpoints

CustomNotations

businessexpert integration

real

Business

But that‘s another talk…

ViewpointsTechnical

predefinedlibrary

configure

Example Languages

06.11.2009

30

06.11.2009

31

06.11.2009

32

06.11.2009

33

matricesAdding

embeddedto C in an

environment.

(Seemingly)

Simple Example

Currently:

1• Declare Data Structures in XML

2• Generate Headers

3• Implement manually in C

Currently:

Matrices

and generator

not supportedin XML format

06.11.2009

34

Currently:

Tool team

… a lot of work

would have todo the extension

… busy… one central tool

Currently:

No real

… type checks

compiler supportin the resulting C code

… operator overloading… generics (matrix<int>)… matrix syntax?

Better Solution

Better Solution

types

matrixgeneric

vectorand

Better Solution

matrixreal

literalsvector

and

06.11.2009

35

Better Solution

highlightssyntax

vectorsfor

and

matrices

Better Solution

operatoroverloading

Better Solution

operatoroverloading

staticoptimization… symmetrical matrices… identity matrix… diagonal matrices

Better Solution

mathnotation

Better Solution

used only bythose who

separatea

modulelanguage

really need it

06.11.2009

36

In addition: PLE Variability

variabilityannotating

expressionsto

arbitraryregions



expressionsto

arbitraryregions

statically checked



expressionsto

arbitraryregions

projectvariant

AvailableTooling

AvailableTooling

Intentional SoftwareDomain

Workbench

06.11.2009

37

Dec 15, 2008Version 1.0 released in

currently at 1.4

CommercialProduct

Eval availableupon request

Statemachine Example

Nat

ive

Pro

ject

ion


Tab

ula

r P

roje

ctio

n

06.11.2009

38


Text

ual

DSL

Pro

ject

ion


Java

Pro

ject

ion


Ru

by

Pro

ject

ion


Two

pro

ject

ion

s si

de

/sid

e


Two

pro

ject

ion

s si

de/

sid

e

06.11.2009

39

Pension Workbench Example

Text Editing Domain


Insurance Mathematics Domain


Pension Contract Rules Domain


All in one Document


Symbolically integrated

06.11.2009

40

A Journey…

Are we there?

A Journey…

web email skype

xinglinkedin

[email protected]

http://www.xing.com/profile/Markus_Voelterhttp://www.linkedin.com/pub/0/377/a31

.coordinates

one more thing…

06.11.2009

41

http://sioux.nl

Feb 3 – 4, 2010

Domain Specific Languages (for Product Lines)

Eindhoven, NL

Sioux Embedded Systems

http://itemis.de

12./13.11.2009: Hamburg18./19.02.2010: Hamburg25./26.02.2010: Stuttgart

15./16.04.2010: München

Xtextitemis

http://bit.ly/3gRt8l

http://itemis.de

23./27.11.2009: Bonn30./04.12.2009: München

Eclipse Modeling (GEF, EMF, GMF)itemis

http://bit.ly/2n9H9j

THE END. Really.

erlang c++ ruby c - jugs€¦ · erlang fortran c programming languages are not enough. high-level...

Documents