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package com.github.javaparser.generator.core.visitor;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.stmt.BlockStmt;
import com.github.javaparser.generator.VisitorGenerator;
import com.github.javaparser.metamodel.BaseNodeMetaModel;
import com.github.javaparser.metamodel.PropertyMetaModel;
import com.github.javaparser.utils.SourceRoot;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import static com.github.javaparser.utils.CodeGenerationUtils.f;
/**
* Generates JavaParser's GenericListVisitorAdapter.
*/
public class GenericListVisitorAdapterGenerator extends VisitorGenerator {
public GenericListVisitorAdapterGenerator(SourceRoot sourceRoot) {
super(sourceRoot, "com.github.javaparser.ast.visitor", "GenericListVisitorAdapter", "List<R>", "A", true);
}
@Override
protected void generateVisitMethodBody(BaseNodeMetaModel node, MethodDeclaration visitMethod, CompilationUnit compilationUnit) {
visitMethod.getParameters().forEach(p -> p.setFinal(true));
BlockStmt body = visitMethod.getBody().get();
body.getStatements().clear();
body.addStatement("List<R> result = new ArrayList<>();");
body.addStatement("List<R> tmp;");
final String resultCheck = "if (tmp != null) result.addAll(tmp);";
for (PropertyMetaModel field : node.getAllPropertyMetaModels()) {
final String getter = field.getGetterMethodName() + "()";
if (field.getNodeReference().isPresent()) {
if (field.isOptional()) {
body.addStatement(f("if (n.%s.isPresent()) {" +
" tmp = n.%s.get().accept(this, arg);" +
" %s" +
"}", getter, getter, resultCheck));
} else {
body.addStatement(f("{ tmp = n.%s.accept(this, arg); %s }", getter, resultCheck));
}
}
}
body.addStatement("return result;");
Arrays.stream(new Class<?>[] {List.class, ArrayList.class}).filter(c ->
compilationUnit.getImports().stream().noneMatch(
i -> c.getName().equals(i.getName().asString())
)
).forEach(compilationUnit::addImport);
}
}
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