ltd-graph-builder/src/main/java/grafos/Visitador.java

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package grafos;
import com.github.javaparser.ast.Node;
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import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.stmt.ExpressionStmt;
import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
import java.util.Collections;
import java.util.List;
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public class Visitador extends VoidVisitorAdapter<CFG> {
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//********************************************************/
//********************** Atributos ***********************/
//********************************************************/
private List<Node> prevNode;
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//********************************************************/
//*********************** Metodos ************************/
//********************************************************/
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// Visitador de métodos
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// Este visitador añade el nodo final al CFG
@Override
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public void visit(MethodDeclaration methodDeclaration, CFG graph) {
prevNode = Collections.singletonList(graph.beginNode());
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// Visitamos el método
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super.visit(methodDeclaration, graph);
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// Añadimos el nodo final al CFG
Node end = graph.endNode();
for (Node n : prevNode)
if (n != end)
graph.connect(n, end);
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}
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// Visitador de expresiones
// Cada expresión encontrada genera un nodo en el CFG
@Override
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public void visit(ExpressionStmt es, CFG graph) {
graph.addNode(es);
graph.connect(prevNode, es);
prevNode = Collections.singletonList((Node) es);
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// Seguimos visitando...
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super.visit(es, graph);
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}
}