An Overview of Overture and how tools for VDM are...

The Overture Project Tool Set Bootstrapping Tools for VDM

An Overview of Overture and how tools for VDMare bootstrapped

Rodin User and Developer Workshop

Kenneth Lausdahlkenneth AT lausdahl.com

Miguel Ferreiram.ferreira AT sig.nl

Aarhus School of EngineeringSoftware Improvement Group

Southampton — July 16 2009

Outline

The Overture ProjectOverview of the Overture Tools

Tool SetComponentsEclipse integration

Bootstrapping Tools for VDM — Past and PresentBootstrappingHistory of VDMTools Bootstrapping — Peter Gorm Larsen [1]Bootstrapping Overture Tools

Introduction

• Vienna Development Method

• Multi dialect (VDM-SL, VDM++ and VDM-RT).

• VDM Tools

Introduction

• VDM Tools

Introduction

• VDM Tools

The Overture project

MissionOverture’s mission is twofold:

• to provide an industrial-strength tool that supports the use ofprecise abstract models in software development, and

• to foster an environment that allows researchers and otherinterested parties to experiment with modifications andextensions to the tool.

The Overture tools are being developed by volunteers, researchersand students.

Overview of the Overture Tools

Overture components

Basic automatic checks andGUI

• Refactoring support.

• Editor with syntax highlighting.

• Syntax check.

• Type check.

Connections to standarddevelopment environments

• Code Generators C++, Java.

• Reverse Engineering support.

• GUI generators.

• UML visualization support.

• SysML, AADL visualization support.

Components

Validation support• Interpreter (with debug protocol).

• Test generation support.

• Visualization for execution traces.

• Pretty Printing with coverage.

Verification support

• Proof obligation generation.

• Model checking support.

• Interactive Proof support.

• Automatic proof support.

Connection to RodinThe automatic proof support is current done in HOL but the GUIpresentation of that will be difficult inside Eclipse. So analternative connection to Rodin would be interesting if possible.

Components

Validation support• Interpreter (with debug protocol).

• Visualization for execution traces.

• Pretty Printing with coverage.

Verification support

• Model checking support.

• Interactive Proof support.

• Automatic proof support.

Connection to RodinThe automatic proof support is current done in HOL but the GUIpresentation of that will be difficult inside Eclipse. So analternative connection to Rodin would be interesting if possible.

Outline

Features

• Syntax check.

• Type check.

• Interpreter (with debug protocol).

• Pretty Printing with coverage (partly).

• Multi dialect: VDM-SL, VDM++ and VDM-RT

Editor

Features

• Editor with syntax highlighting.

• Syntax check.

• Type check.

• UML visualization support.

• Interpreter.

Editor Main view

• Overture Debugger.

Outline

BootstrappingCompilers

“Bootstrapping is a term used in computer science todescribe the techniques involved in writing a compiler(. . . ) in the target programming language which it isintended to compile.”

From Wikipedia, the free encyclopedia

BootstrappingHow is it done?

• How to produce the first compiler for a new language?

Niklaus Wirth — the first Pascal compiler

• Used a different language — first implementation was writtenin Fortan;

• Manually compiled the compiler — second implementationwas written in Pascal and hand compiled.

ArchitectureOverview

Word Corba based

APIASCII or RTF

VDM-SL

Module

Interpreter

Debugger (DS)

DL Modules

Checker (SS)

User Interface

Module

Specification

Manager (SM)

External

Support

Pretty

Printer

Coverage

Coupling

Output

Statistics

Support (PS)Generators (CGs)

Java/C++Code

Rational Rose

Parser

Scanner

694 Larsen P.G.: Ten Years of Historical Development "Bootstrapping" ...

ArchitectureConventional development

Word Corba based

APIASCII or RTF

VDM-SL

Module

Interpreter

Debugger (DS)

DL Modules

Checker (SS)

User Interface

Module

Specification

Manager (SM)

External

Support

Pretty

Printer

Coverage

Coupling

Output

Statistics

Java/C++Code

Rational Rose

Parser

Scanner

ArchitectureFormally specified

Word Corba based

APIASCII or RTF

VDM-SL

Module

Interpreter

Debugger (DS)

DL Modules

Checker (SS)

User Interface

Module

Specification

Manager (SM)

External

Support

Pretty

Printer

Coverage

Coupling

Output

Statistics

Java/C++Code

Rational Rose

Parser

Scanner

ArchitectureGenerated code

Word Corba based

APIASCII or RTF

VDM-SL

Module

Interpreter

Debugger (DS)

DL Modules

Checker (SS)

User Interface

Module

Specification

Manager (SM)

External

Support

Pretty

Printer

Coverage

Coupling

Output

Statistics

Java/C++Code

Rational Rose

Parser

Scanner

BootstrappingTest and improvement

Test & Improve

Type Checker

Interpreter

Debugger

I/Dspec

PSspec

TCspec

SMspec

CGspec

BootstrappingTool generation

Spec Manager

Proof Support

SMspec

PSspec

Code Generator

BootstrappingTool generation

Type Checker

Code Generator

Interpreter

Debbugger

Code Generator

TCspec

I/Dspec

CGspec

ArchitectureOverview

ArchitectureConventional development

ArchitectureFormally specified

ArchitectureGenerated code

BootstrappingAST Generation

AST Gen

OMLvdm++

OMLASTjava

VDMTools

AST GenVDMToolsAGvdm++

BootstrappingAST Generation

OMLvdm++

OMLASTjava

OMLASTvdm++

VDMTools

AST GenVDMToolsAGvdm++

BootstrappingComponent Generation

HOLTvdm++

STvdm++

UMLVvdm++

VDMTools

OvertureTools

Thank you!

www.overturetool.org

Peter Gorm Larsen.Ten Years of Historical Development: “Bootstrapping”VDMTools.JUCS, 7(8):692–709, 2001.

An Overview of Overture and how tools for VDM are...

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