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/*
* Copyright 2016 Federico Tomassetti
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.javaparser.symbolsolver.resolution;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.ast.stmt.ReturnStmt;
import com.github.javaparser.resolution.MethodUsage;
import com.github.javaparser.resolution.types.ResolvedType;
import com.github.javaparser.symbolsolver.javaparser.Navigator;
import com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.CombinedTypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.JavaParserTypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.ReflectionTypeSolver;
import org.junit.Test;
import java.io.File;
import java.util.List;
import static org.junit.Assert.assertEquals;
public class VariadicResolutionTest extends AbstractResolutionTest {
@Test
public void issue7() {
CompilationUnit cu = parseSample("Generics_issue7");
ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "SomeCollection");
MethodDeclaration method = Navigator.demandMethod(clazz, "foo3");
ReturnStmt stmt = (ReturnStmt) method.getBody().get().getStatements().get(0);
Expression expression = stmt.getExpression().get();
JavaParserFacade javaParserFacade = JavaParserFacade.get(new ReflectionTypeSolver());
ResolvedType type = javaParserFacade.getType(expression);
assertEquals(true, type.isReferenceType());
assertEquals(List.class.getCanonicalName(), type.asReferenceType().getQualifiedName());
assertEquals("java.util.List<java.lang.Long>", type.describe());
}
@Test
public void methodCallWithReferenceTypeAsVaridicArgumentIsSolved() {
CompilationUnit cu = parseSample("MethodCalls");
ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "MethodCalls");
MethodDeclaration method = Navigator.demandMethod(clazz, "variadicMethod");
MethodCallExpr callExpr = Navigator.findMethodCall(method, "variadicMethod").get();
TypeSolver typeSolver = new ReflectionTypeSolver();
JavaParserFacade javaParserFacade = JavaParserFacade.get(typeSolver);
MethodUsage callee = javaParserFacade.solveMethodAsUsage(callExpr);
assertEquals("variadicMethod", callee.getName());
}
@Test
public void resolveVariadicMethodWithGenericArgument() {
CompilationUnit cu = parseSample("MethodCalls");
ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "MethodCalls");
MethodDeclaration method = Navigator.demandMethod(clazz, "genericMethodTest");
MethodCallExpr callExpr = Navigator.findMethodCall(method, "variadicWithGenericArg").get();
TypeSolver typeSolver = new ReflectionTypeSolver();
JavaParserFacade javaParserFacade = JavaParserFacade.get(typeSolver);
MethodUsage callee = javaParserFacade.solveMethodAsUsage(callExpr);
assertEquals("variadicWithGenericArg", callee.getName());
}
@Test
public void selectMostSpecificVariadic() {
CompilationUnit cu = parseSample("MethodCalls");
ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "MethodCalls");
MethodDeclaration method = Navigator.demandMethod(clazz, "variadicTest");
List<MethodCallExpr> calls = method.findAll(MethodCallExpr.class);
File src = adaptPath(new File("src/test/resources"));
TypeSolver typeSolver = new CombinedTypeSolver(new ReflectionTypeSolver(), new JavaParserTypeSolver(src));
JavaParserFacade javaParserFacade = JavaParserFacade.get(typeSolver);
MethodUsage call1 = javaParserFacade.solveMethodAsUsage(calls.get(0));
MethodUsage call2 = javaParserFacade.solveMethodAsUsage(calls.get(1));
assertEquals("int", call1.returnType().describe());
assertEquals("void", call2.returnType().describe());
}
}
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