Supplementary Material - Mining Billions of AST Nodes to Study Actual and Potential Usage of Java Language Features
by Robert Dyer, Hridesh Rajan, Hoan Anh Nguyen, and Tien N. Nguyen
Table of Contents
- Introduction
- Section 2 - JLS Background
- Section 4.2 - Dataset Metrics
- Section 5.1 - RQ1 - Do projects use new language features before the features are released?
- Section 5.2 - RQ2 - How frequently is each language feature used?
- Section 5.3 - RQ3 - How did committers adopt and use language features?
- Section 5.3.1 - RQ3.1 - How many committers adopted and used new features over time?
- Section 5.3.2 - RQ3.2 - How much did committers use each feature?
- Section 5.3.3 - RQ3.3 - Did committers adopt features on an individual basis or as a team?
- Section 5.3.4 - RQ3.4 - Did committers use all new features?
- Section 5.4 - RQ4 - Were there missed opportunities to use language features?
- Section 5.5 - RQ5 - Was old code converted to use new language features?
Section 5.4 - RQ4 - Were there missed opportunities to use language features?
Boa Program: potential-uses.boa
Raw Data: potential-uses.txt
Figure 15 Generator: potentialuses.java
This material mines potential uses for language features, shown in Figure 15.
The output contains five keys (each key represents a row in Figure 15):
| Key | Description |
|---|---|
| OldPotential | Potential uses in old files. |
| NewPotential | Potential uses in new files. |
| AllPotential | Potential uses in all files. |
| FilesPotential | Number of files with potential uses. |
| ProjectsPotential | Number of projects with potential uses. |
and each key contains an index for the feature being mined:
| Key Index | Column in Figure 6 |
|---|---|
| Assert | Assert |
| Varargs | Varargs |
| BinaryLit | Binary Literals |
| Diamond | Diamond |
| MultiCatch | MultiCatch |
| Underscore | Underscore Literals |
Boa Program: try-resources-bugs.boa
Raw Data: try-resources-bugs.txt
This material mines potential bugs from not using try with resources.
Last modified: $Id: index.html,v 1.2 2013/09/20 21:49:25 rdyer Exp $
