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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.javaparser.contexts;
import com.github.javaparser.ParseException;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.resolution.MethodUsage;
import com.github.javaparser.resolution.declarations.ResolvedReferenceTypeDeclaration;
import com.github.javaparser.resolution.types.ResolvedType;
import com.github.javaparser.symbolsolver.core.resolution.Context;
import com.github.javaparser.symbolsolver.javaparser.Navigator;
import com.github.javaparser.symbolsolver.javaparsermodel.contexts.MethodCallExprContext;
import com.github.javaparser.symbolsolver.model.typesystem.ReferenceTypeImpl;
import com.github.javaparser.symbolsolver.resolution.AbstractResolutionTest;
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.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author Malte Langkabel
*/
public class MethodCallExprContextResolutionTest extends AbstractResolutionTest {
private MethodCallExpr getMethodCallExpr(String methodName, String callingMethodName) {
CompilationUnit cu = parseSample("MethodCalls");
com.github.javaparser.ast.body.ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "MethodCalls");
MethodDeclaration method = Navigator.demandMethod(clazz, methodName);
return Navigator.findMethodCall(method, callingMethodName).get();
}
private CombinedTypeSolver createTypeSolver() {
File src = adaptPath(new File("src/test/resources"));
CombinedTypeSolver combinedTypeSolver = new CombinedTypeSolver();
combinedTypeSolver.add(new ReflectionTypeSolver());
combinedTypeSolver.add(new JavaParserTypeSolver(src));
return combinedTypeSolver;
}
@Test
public void solveNestedMethodCallExprContextWithoutScope() {
MethodCallExpr methodCallExpr = getMethodCallExpr("bar1", "foo");
CombinedTypeSolver typeSolver = createTypeSolver();
Context context = new MethodCallExprContext(methodCallExpr, typeSolver);
Optional<MethodUsage> ref = context.solveMethodAsUsage("foo", Collections.emptyList(), typeSolver);
assertTrue(ref.isPresent());
assertEquals("MethodCalls", ref.get().declaringType().getQualifiedName());
}
@Test
public void solveGenericMethodCallMustUseProvidedTypeArgs() {
assertCanSolveGenericMethodCallMustUseProvidedTypeArgs("genericMethod0");
}
@Test
public void solveStaticGenericMethodCallMustUseProvidedTypeArgs() {
assertCanSolveGenericMethodCallMustUseProvidedTypeArgs("staticGenericMethod0");
}
private void assertCanSolveGenericMethodCallMustUseProvidedTypeArgs(String callMethodName) {
MethodCallExpr methodCallExpr = getMethodCallExpr("genericMethodTest", callMethodName);
CombinedTypeSolver typeSolver = createTypeSolver();
MethodCallExprContext context = new MethodCallExprContext(methodCallExpr, typeSolver);
Optional<MethodUsage> ref = context.solveMethodAsUsage(callMethodName, Collections.emptyList(), typeSolver);
assertTrue(ref.isPresent());
assertEquals("MethodCalls", ref.get().declaringType().getQualifiedName());
assertEquals(Collections.singletonList("java.lang.Integer"), ref.get().typeParametersMap().getTypes().stream().map(ty -> ty.asReferenceType().describe()).collect(Collectors.toList()));
}
@Test
public void solveGenericMethodCallCanInferFromArguments() {
assertCanSolveGenericMethodCallCanInferFromArguments("genericMethod1");
}
@Test
public void solveStaticGenericMethodCallCanInferFromArguments() {
assertCanSolveGenericMethodCallCanInferFromArguments("staticGenericMethod1");
}
private void assertCanSolveGenericMethodCallCanInferFromArguments(String callMethodName) {
MethodCallExpr methodCallExpr = getMethodCallExpr("genericMethodTest", callMethodName);
CombinedTypeSolver typeSolver = createTypeSolver();
MethodCallExprContext context = new MethodCallExprContext(methodCallExpr, typeSolver);
ResolvedReferenceTypeDeclaration stringType = typeSolver.solveType("java.lang.String");
List<ResolvedType> argumentsTypes = new ArrayList<>();
argumentsTypes.add(new ReferenceTypeImpl(stringType, typeSolver));
Optional<MethodUsage> ref = context.solveMethodAsUsage(callMethodName, argumentsTypes, typeSolver);
assertTrue(ref.isPresent());
assertEquals("MethodCalls", ref.get().declaringType().getQualifiedName());
assertEquals(Collections.singletonList("java.lang.String"), ref.get().typeParametersMap().getTypes().stream().map(ty -> ty.asReferenceType().describe()).collect(Collectors.toList()));
}
}
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