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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.*;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.FieldDeclaration;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.ast.expr.NameExpr;
import com.github.javaparser.ast.stmt.CatchClause;
import com.github.javaparser.ast.stmt.TryStmt;
import com.github.javaparser.ast.type.Type;
import com.github.javaparser.resolution.MethodUsage;
import com.github.javaparser.resolution.declarations.ResolvedTypeDeclaration;
import com.github.javaparser.resolution.declarations.ResolvedValueDeclaration;
import com.github.javaparser.resolution.types.ResolvedReferenceType;
import com.github.javaparser.resolution.types.ResolvedType;
import com.github.javaparser.resolution.types.ResolvedUnionType;
import com.github.javaparser.symbolsolver.JavaSymbolSolver;
import com.github.javaparser.symbolsolver.javaparser.Navigator;
import com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade;
import com.github.javaparser.symbolsolver.model.resolution.SymbolReference;
import com.github.javaparser.symbolsolver.model.resolution.TypeSolver;
import com.github.javaparser.symbolsolver.resolution.typesolvers.ReflectionTypeSolver;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class JavaParserFacadeResolutionTest extends AbstractResolutionTest {
@Test
public void typeDeclarationSuperClassImplicitlyIncludeObject() {
CompilationUnit cu = parseSample("Generics");
ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "Generics");
ResolvedTypeDeclaration typeDeclaration = JavaParserFacade.get(new ReflectionTypeSolver()).getTypeDeclaration(clazz);
ResolvedReferenceType superclass = typeDeclaration.asClass().getSuperClass();
assertEquals(Object.class.getCanonicalName(), superclass.getQualifiedName());
}
// See issue 42
@Test
public void solvingReferenceToUnsupportedOperationException() {
String code = "public class Bla {\n" +
" public void main()\n" +
" {\n" +
" try\n" +
" {\n" +
" int i = 0;\n" +
" }\n" +
" catch (UnsupportedOperationException e)\n" +
" {\n" +
" String s;\n" +
" e.getMessage();\n" +
" }\n" +
" }\n" +
"}";
MethodCallExpr methodCallExpr = Navigator.findNodeOfGivenClass(JavaParser.parse(code), MethodCallExpr.class);
MethodUsage methodUsage = JavaParserFacade.get(new ReflectionTypeSolver()).solveMethodAsUsage(methodCallExpr);
assertEquals("java.lang.Throwable.getMessage()", methodUsage.getQualifiedSignature());
}
// See issue 46
@Test
public void solvingReferenceToCatchClauseParam() {
String code = "public class Bla {\n" +
" public void main()\n" +
" {\n" +
" try\n" +
" {\n" +
" int i = 0;\n" +
" }\n" +
" catch (UnsupportedOperationException e)\n" +
" {\n" +
" String s;\n" +
" e.getMessage();\n" +
" }\n" +
" }\n" +
"}";
MethodCallExpr methodCallExpr = Navigator.findNodeOfGivenClass(JavaParser.parse(code), MethodCallExpr.class);
NameExpr nameE = (NameExpr)methodCallExpr.getScope().get();
SymbolReference<? extends ResolvedValueDeclaration> symbolReference = JavaParserFacade.get(new ReflectionTypeSolver()).solve(nameE);
assertEquals(true, symbolReference.isSolved());
assertEquals(true, symbolReference.getCorrespondingDeclaration().isParameter());
assertEquals("e", symbolReference.getCorrespondingDeclaration().asParameter().getName());
assertEquals("java.lang.UnsupportedOperationException", symbolReference.getCorrespondingDeclaration().asParameter().getType().asReferenceType().getQualifiedName());
}
// See issue 47
@Test
public void solvingReferenceToAnAncestorInternalClass() {
String code = "public class Foo {\n" +
" public class Base {\n" +
" public class X {\n" +
" }\n" +
" }\n" +
"\n" +
" public class Derived extends Base {\n" +
" public X x = null;\n" +
" }\n" +
"}";
FieldDeclaration fieldDeclaration = Navigator.findNodeOfGivenClass(JavaParser.parse(code), FieldDeclaration.class);
Type jpType = fieldDeclaration.getCommonType();
ResolvedType jssType = JavaParserFacade.get(new ReflectionTypeSolver()).convertToUsage(jpType);
assertEquals("Foo.Base.X", jssType.asReferenceType().getQualifiedName());
}
// See issue 119
@Test
public void solveTryWithResourceVariable() {
String code = "import java.util.Scanner; class A { void foo() { try (Scanner sc = new Scanner(System.in)) {\n" +
" sc.nextLine();\n" +
"} } }";
CompilationUnit cu = JavaParser.parse(code);
MethodCallExpr methodCallExpr = Navigator.findMethodCall(cu, "nextLine").get();
Expression scope = methodCallExpr.getScope().get();
ResolvedType type = JavaParserFacade.get(new ReflectionTypeSolver()).getType(scope);
assertEquals(true, type.isReferenceType());
assertEquals("java.util.Scanner", type.asReferenceType().getQualifiedName());
}
private CompilationUnit parseWithTypeSolver(String code) {
TypeSolver typeSolver = new ReflectionTypeSolver();
ParserConfiguration parserConfiguration = new ParserConfiguration();
parserConfiguration.setSymbolResolver(new JavaSymbolSolver(typeSolver));
JavaParser javaParser = new JavaParser(parserConfiguration);
return javaParser.parse(ParseStart.COMPILATION_UNIT, new StringProvider(code)).getResult().get();
}
@Test
public void solveMultiCatchType() {
String code = "class A {\n" +
" public void foo() {\n" +
" try {\n" +
" \n" +
" } catch (IllegalStateException | IllegalArgumentException e) {\n" +
" \n" +
" }\n" +
" }\n" +
" }";
CompilationUnit cu = parseWithTypeSolver(code);
CatchClause catchClause = Navigator.findNodeOfGivenClass(cu, CatchClause.class);
Type jpType = catchClause.getParameter().getType();
ResolvedType jssType = jpType.resolve();
assertEquals(true, jssType instanceof ResolvedUnionType);
}
}
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