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A code metric tool for Software Engineering

A code metric tool for Software Engineering. Teng Li. Software Measurement. Why? Mature technologies Larger scale Pursue better control and management Needs for maintain and refractory. Software Measurement. What?

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A code metric tool for Software Engineering

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  1. A code metric tool for Software Engineering Teng Li

  2. Software Measurement Why? • Mature technologies • Larger scale • Pursue better control and management • Needs for maintain and refractory

  3. Software Measurement What? • Measurement is a process to assign numbers for each attribute or factor of an object or an event according to rules. • Key: rules, attributes • We use measurement to get quantified assessment for a software.

  4. Software Metrics • A metric is a measurement function. Software Data Numerical data Metric

  5. Metric for code • Code analysis can reflect potential problems in SW design. • Code quality is related to future maintenance and reuse. • Code metric can help developers to avoid fatal design problem and mitigate risks. E.g. Visual Studio 2008 - Code Metrics Sourceforge - Metrics 1.3.6

  6. Metric for code • Metric Step: • Abstract common flaws in coding, like a data class, useless method or duplicated code fragment. • Define a metric rule, like fetch similarity of two code fragment. • Associate a metric rule with a abstract code characteristic. • Get metric value via computing

  7. Metric for code • Framework Software Choose Model Metric result UI Collected data Factor computing Core computing Data storage Repository Model Template Result

  8. Code Bad Smells • Object-Oriented design • To indicate problematic classes or method • Use metrics to provide evidence • E.g. Data Class God Class God Method Feature Envy

  9. My metric tool • Eclipse based plug-in • Parse code and generate AST(Abstract syntax tree) • Using JDT to get elements in a compile unit • Computing values to indicate potential problematic code(bad smells)

  10. My metric tool • Eclipse based plug-in • Parse code and generate AST(Abstract syntax tree) • Using JDT to get elements in a compile unit • Computing values to indicate potential problematic code(bad smells)

  11. Thanks Questions?

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