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GenericVisitorAdapterGenerator.java
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GenericVisitorAdapterGenerator.java
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/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2020 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
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.utils.SourceRoot;
import com.github.javaparser.metamodel.BaseNodeMetaModel;
import com.github.javaparser.metamodel.PropertyMetaModel;
import static com.github.javaparser.utils.CodeGenerationUtils.f;
/**
* Generates JavaParser's VoidVisitorAdapter.
*/
public class GenericVisitorAdapterGenerator extends VisitorGenerator {
public GenericVisitorAdapterGenerator(SourceRoot sourceRoot) {
super(sourceRoot, "com.github.javaparser.ast.visitor", "GenericVisitorAdapter", "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("R result;");
final String resultCheck = "if (result != null) return result;";
for (PropertyMetaModel field : node.getAllPropertyMetaModels()) {
final String getter = field.getGetterMethodName() + "()";
if (field.getNodeReference().isPresent()) {
if (field.isOptional()) {
body.addStatement(f("if (n.%s.isPresent()) {" +
" result = n.%s.get().accept(this, arg);" +
" %s" +
"}", getter, getter, resultCheck));
} else {
body.addStatement(f("{ result = n.%s.accept(this, arg); %s }", getter, resultCheck));
}
}
}
body.addStatement("return null;");
}
}