| /* |
| * 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.javassistmodel; |
| |
| import com.github.javaparser.ast.AccessSpecifier; |
| import com.github.javaparser.ast.Node; |
| import com.github.javaparser.resolution.MethodUsage; |
| import com.github.javaparser.resolution.declarations.ResolvedMethodDeclaration; |
| import com.github.javaparser.resolution.declarations.ResolvedParameterDeclaration; |
| import com.github.javaparser.resolution.declarations.ResolvedReferenceTypeDeclaration; |
| import com.github.javaparser.resolution.declarations.ResolvedTypeParameterDeclaration; |
| import com.github.javaparser.resolution.types.ResolvedType; |
| import com.github.javaparser.symbolsolver.core.resolution.Context; |
| import com.github.javaparser.symbolsolver.declarations.common.MethodDeclarationCommonLogic; |
| import com.github.javaparser.symbolsolver.model.resolution.TypeSolver; |
| import javassist.CtMethod; |
| import javassist.NotFoundException; |
| import javassist.bytecode.BadBytecode; |
| import javassist.bytecode.SignatureAttribute; |
| |
| import java.lang.reflect.Modifier; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| /** |
| * @author Federico Tomassetti |
| */ |
| public class JavassistMethodDeclaration implements ResolvedMethodDeclaration { |
| private CtMethod ctMethod; |
| private TypeSolver typeSolver; |
| |
| public JavassistMethodDeclaration(CtMethod ctMethod, TypeSolver typeSolver) { |
| this.ctMethod = ctMethod; |
| this.typeSolver = typeSolver; |
| } |
| |
| @Override |
| public boolean isDefaultMethod() { |
| return ctMethod.getDeclaringClass().isInterface() && !isAbstract(); |
| } |
| |
| @Override |
| public boolean isStatic() { |
| return Modifier.isStatic(ctMethod.getModifiers()); |
| } |
| |
| @Override |
| public String toString() { |
| return "JavassistMethodDeclaration{" + |
| "ctMethod=" + ctMethod + |
| '}'; |
| } |
| |
| @Override |
| public String getName() { |
| return ctMethod.getName(); |
| } |
| |
| @Override |
| public boolean isField() { |
| return false; |
| } |
| |
| @Override |
| public boolean isParameter() { |
| return false; |
| } |
| |
| @Override |
| public boolean isType() { |
| return false; |
| } |
| |
| @Override |
| public ResolvedReferenceTypeDeclaration declaringType() { |
| if (ctMethod.getDeclaringClass().isInterface()) { |
| return new JavassistInterfaceDeclaration(ctMethod.getDeclaringClass(), typeSolver); |
| } else { |
| return new JavassistClassDeclaration(ctMethod.getDeclaringClass(), typeSolver); |
| } |
| } |
| |
| @Override |
| public ResolvedType getReturnType() { |
| try { |
| if (ctMethod.getGenericSignature() != null) { |
| javassist.bytecode.SignatureAttribute.Type genericSignatureType = SignatureAttribute.toMethodSignature(ctMethod.getGenericSignature()).getReturnType(); |
| return JavassistUtils.signatureTypeToType(genericSignatureType, typeSolver, this); |
| } else { |
| return JavassistFactory.typeUsageFor(ctMethod.getReturnType(), typeSolver); |
| } |
| } catch (NotFoundException e) { |
| throw new RuntimeException(e); |
| } catch (BadBytecode e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| |
| @Override |
| public int getNumberOfParams() { |
| try { |
| return ctMethod.getParameterTypes().length; |
| } catch (NotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public ResolvedParameterDeclaration getParam(int i) { |
| try { |
| boolean variadic = false; |
| if ((ctMethod.getModifiers() & javassist.Modifier.VARARGS) > 0) { |
| variadic = i == (ctMethod.getParameterTypes().length - 1); |
| } |
| if (ctMethod.getGenericSignature() != null) { |
| SignatureAttribute.MethodSignature methodSignature = SignatureAttribute.toMethodSignature(ctMethod.getGenericSignature()); |
| SignatureAttribute.Type signatureType = methodSignature.getParameterTypes()[i]; |
| return new JavassistParameterDeclaration(JavassistUtils.signatureTypeToType(signatureType, typeSolver, this), typeSolver, variadic); |
| } else { |
| return new JavassistParameterDeclaration(ctMethod.getParameterTypes()[i], typeSolver, variadic); |
| } |
| } catch (NotFoundException e) { |
| throw new RuntimeException(e); |
| } catch (BadBytecode badBytecode) { |
| throw new RuntimeException(badBytecode); |
| } |
| } |
| |
| public MethodUsage getUsage(Node node) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public MethodUsage resolveTypeVariables(Context context, List<ResolvedType> parameterTypes) { |
| return new MethodDeclarationCommonLogic(this, typeSolver).resolveTypeVariables(context, parameterTypes); |
| } |
| |
| @Override |
| public boolean isAbstract() { |
| return Modifier.isAbstract(ctMethod.getModifiers()); |
| } |
| |
| @Override |
| public List<ResolvedTypeParameterDeclaration> getTypeParameters() { |
| try { |
| if (ctMethod.getGenericSignature() == null) { |
| return Collections.emptyList(); |
| } |
| SignatureAttribute.MethodSignature methodSignature = SignatureAttribute.toMethodSignature(ctMethod.getGenericSignature()); |
| return Arrays.stream(methodSignature.getTypeParameters()).map((jasTp) -> new JavassistTypeParameter(jasTp, this, typeSolver)).collect(Collectors.toList()); |
| } catch (BadBytecode badBytecode) { |
| throw new RuntimeException(badBytecode); |
| } |
| } |
| |
| @Override |
| public AccessSpecifier accessSpecifier() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public int getNumberOfSpecifiedExceptions() { |
| try { |
| return ctMethod.getExceptionTypes().length; |
| } catch (NotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public ResolvedType getSpecifiedException(int index) { |
| if (index < 0 || index >= getNumberOfSpecifiedExceptions()) { |
| throw new IllegalArgumentException(String.format("No exception with index %d. Number of exceptions: %d", |
| index, getNumberOfSpecifiedExceptions())); |
| } |
| try { |
| return JavassistFactory.typeUsageFor(ctMethod.getExceptionTypes()[index], typeSolver); |
| } catch (NotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |