Demonstration of how to use the Trace-Boosting library with graph exa…

…mple

src/main/java/Demo.java

@@ -0,0 +1,115 @@
+import org.logicng.formulas.FormulaFactory;
+import org.variantsync.boosting.TraceBoosting;
+import org.variantsync.boosting.datastructure.ASTNode;
+import org.variantsync.boosting.datastructure.Feature;
+import org.variantsync.boosting.datastructure.MainTree;
+import org.variantsync.boosting.parsing.ESupportedLanguages;
+import org.variantsync.boosting.product.Variant;
+import org.variantsync.boosting.product.VariantPassport;
+
+import java.nio.file.Path;
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class Demo {
+
+    public static void main(String[] args) {
+
+        List<VariantPassport> variantPassports = createVariantPassports();
+
+        TraceBoosting traceBoosting = new TraceBoosting(
+                variantPassports,
+                Path.of(System.getProperty("user.dir") + "/data/graph/workdir"),
+                ESupportedLanguages.LINES);
+
+        // optionally the number of threads can be adjusted, per default it is set to the number of available system threads
+        traceBoosting.setNumThreads(1);
+
+        List<Variant> variants = traceBoosting.getVariants();
+        System.out.println("initiated with " + variants.size() + " products");
+        applyDistribution(variants);
+
+        // runs the boosted comparison-based feature tracoing algorithm
+        MainTree tree = traceBoosting.computeMappings();
+
+        for (ASTNode n : tree.getTree().getAstNodes()) {
+            if (!n.getMapping().toString().equals("$true")) {
+                System.out.println(n.getMapping()+ " mapped onto " + n.getCode());
+            }
+        }
+
+        Set<String> relevantFeatures = variants.stream().flatMap(p -> p.getFeatures().stream().map(Feature::getName))
+                .collect(Collectors.toSet());
+
+        System.out.println(relevantFeatures);
+
+//        for (Variant p : traceBoosting.getVariants())
+//        {
+//            System.out.println("Variant: " + p.getName());
+//            for (ASTNode as : p.getAstNodesMainTree()) {
+//                if (!as.getMapping().toString().equals("$true")) {
+//                    System.out.println( as.getMapping()+ " mapped onto " + as.getCode());
+//                }
+//            }
+//            System.out.println();
+//        }
+    }
+
+    private static List<VariantPassport> createVariantPassports() {
+        var variantPassports = new ArrayList<VariantPassport>(3);
+        variantPassports.add(
+                new VariantPassport("weighted",
+                        Path.of(System.getProperty("user.dir") + "/data/graph/variant1/src"),
+                        //configFileMap.get(variantName)
+                        Path.of(System.getProperty("user.dir") + "/data/graph/variant1/config1.config")
+                )
+        );
+
+        variantPassports.add(
+                new VariantPassport("directed",
+                        Path.of(System.getProperty("user.dir") + "/data/graph/variant2/src"),
+                        //configFileMap.get(variantName)
+                        Path.of(System.getProperty("user.dir") + "/data/graph/variant2/config2.config")
+                )
+        );
+
+        variantPassports.add(
+                new VariantPassport("colored",
+                        Path.of(System.getProperty("user.dir") + "/data/graph/variant3/src"),
+                        Path.of(System.getProperty("user.dir") + "/data/graph/variant3/config3.config"))
+        );
+        return variantPassports;
+    }
+
+    // simulates setting manually annotations of some AST nodes
+    private static void applyDistribution(List<Variant> variants) {
+        var factory = new FormulaFactory();
+        for (Variant p : variants) {
+            // Nodes that can be mapped
+            if (p.getName().equals("weighted")) {
+                for (ASTNode n : p.getProductAst().getAstNodes()) {
+                    if (n.getCode().contains("List<Edge> edges();"))
+                        n.setMapping(factory.variable("E"));
+                }
+            }
+            if (p.getName().equals("weighted")) {
+                for (ASTNode n : p.getProductAst().getAstNodes()) {
+                    if (n.getCode().contains("public interface Graph {"))
+                        n.setMapping(factory.variable("G"));
+                }
+            }
+            if (p.getName().equals("directed")) {
+                for (ASTNode n : p.getProductAst().getAstNodes()) {
+                    if (n.getCode().contains("Graph subGraph(Color c);"))
+                        n.setMapping(factory.variable("C"));
+                }
+            }
+            if (p.getName().equals("colored")) {
+                for (ASTNode n : p.getProductAst().getAstNodes()) {
+                    if (n.getCode().contains("Graph subGraph(Color c);"))
+                        n.setMapping(factory.variable("C"));
+                }
+            }
+        }
+    }
+}