The document discusses automated program transformation using srcML and LINQ. srcML annotates source code as XML, adding structure to make it easier to query and transform. LINQ provides familiar SQL-like queries for C# code. The demonstration shows wrapping all uses of "new" in sample code with try/catch blocks by querying the srcML representation with LINQ and transforming the code. The approach allows fast, multi-language program transformations that are easy to test.

1. Vinay Augustine, Ph.D.
Automated Program Transformation
with srcML and LINQ

2. Overview
 ABB Corporate Research
 The Problem
 The Solution
 What is srcML?
 What is LINQ?
 Demonstration
 Questions

3. ABB Corporate Research
Industrial Software Systems (ISS)
• USA
• Germany
• Switzerland
• Poland
• Sweden
• India
• China
Raleigh, NC
7 research centers worldwide

4. Software at ABB
What motivates us?
Embedded Software Software / Hardware 100% Software
Hybrids

5. Adaptive Maintenance Changes
The Problem
The Scenario
 Long-lived legacy software
 Adapt source code for new
 Compilers
 Libraries
 Environments
© ABB Group
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6. Adaptive Maintenance Changes
The Problem
The Scenario Resulting Issues
 Long-lived legacy software • Time-consuming
 Adapt source code for new • Error-prone
 Compilers • Repetitive
 Libraries
 Environments
© ABB Group
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7. Adaptive Maintenance Changes
An Example
Source: http://msdn.microsoft.com/en-US/library/vstudio/h4bcz65t(v=vs.80).aspx
© ABB Group
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8. Our Solution
 Lightweight srcML (fast!)
 Multi-language
+
 Easy to test
 Fast
LINQ (familiar!)
 Familiar to developers
© ABB Group
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9. What is srcML?
(and why do we like it?)
 What is it?
 XML annotation for source code
 Why do we like it?
 Adds structure to source code
 Multilanguage
 Fast!
 Remove it to get original source!
Source: http://www.sdml.info/projects/srcml/
© ABB Group
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10. LINQ
Language INtegrated Query
 Provides SQL-like queries for C#
 Extensive IDE support in Visual Studio
 Natural for developers
 Can query XML

11. Demonstration
Automate an adaptive maintenance change on real software
Wrap all uses of “new” with a try/catch
block in
Source: http://notepad-plus-plus.org/news/notepad-6.2-release-udl2.html
© ABB Group
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12. Demonstration
Steps
1. Learn about “new” in srcML
2. Where is “new” used?
3. Find all expressions that use “new”
4. Transform all “new” expressions
5. Execute the transform
6. Run the new notepad++.exe
© ABB Group
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13. Questions?
Automated Program Transformation with srcML + LINQ
 Fast
 Multi-language
 Easy to test
Go to our github page for
• more information
• the code
• and this demonstration
http://github.com/abb-iss/SrcML.NET
© ABB Group
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