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The core parser functionality. This may be all you need.
/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2023 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.ast.expr;
import com.github.javaparser.TokenRange;
import com.github.javaparser.ast.AllFieldsConstructor;
import com.github.javaparser.ast.Generated;
import com.github.javaparser.ast.Node;
import com.github.javaparser.ast.NodeList;
import com.github.javaparser.ast.body.BodyDeclaration;
import com.github.javaparser.ast.nodeTypes.NodeWithArguments;
import com.github.javaparser.ast.nodeTypes.NodeWithOptionalScope;
import com.github.javaparser.ast.nodeTypes.NodeWithType;
import com.github.javaparser.ast.nodeTypes.NodeWithTypeArguments;
import com.github.javaparser.ast.observer.ObservableProperty;
import com.github.javaparser.ast.stmt.ExplicitConstructorInvocationStmt;
import com.github.javaparser.ast.type.ClassOrInterfaceType;
import com.github.javaparser.ast.type.Type;
import com.github.javaparser.ast.visitor.CloneVisitor;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.VoidVisitor;
import com.github.javaparser.metamodel.JavaParserMetaModel;
import com.github.javaparser.metamodel.ObjectCreationExprMetaModel;
import com.github.javaparser.metamodel.OptionalProperty;
import com.github.javaparser.resolution.Resolvable;
import com.github.javaparser.resolution.UnsolvedSymbolException;
import com.github.javaparser.resolution.declarations.ResolvedConstructorDeclaration;
import java.util.Optional;
import java.util.function.Consumer;
import static com.github.javaparser.utils.Utils.assertNotNull;
/**
* A constructor call.
*
In {@code new HashMap.Entry(15) {public String getKey() {return null;}};}
* HashMap.Entry is the type, String and Long are type arguments, 15 is an argument, and everything in { }
* is the anonymous class body.
* In {@code class B { class C { public void a() { new B().new C(); } } }} the scope is {@code new B()}
* of ObjectCreationExpr {@code new B().new C()}
*
* @author Julio Vilmar Gesser
*/
public class ObjectCreationExpr extends Expression implements NodeWithTypeArguments, NodeWithType, NodeWithArguments, NodeWithOptionalScope, Resolvable {
@OptionalProperty
private Expression scope;
private ClassOrInterfaceType type;
@OptionalProperty
private NodeList typeArguments;
private NodeList arguments;
@OptionalProperty
private NodeList> anonymousClassBody;
public ObjectCreationExpr() {
this(null, null, new ClassOrInterfaceType(), new NodeList<>(), new NodeList<>(), null);
}
/**
* Defines a call to a constructor.
*
* @param scope may be null
* @param type this is the class that the constructor is being called for.
* @param arguments Any arguments to pass to the constructor
*/
public ObjectCreationExpr(final Expression scope, final ClassOrInterfaceType type, final NodeList arguments) {
this(null, scope, type, null, arguments, null);
}
@AllFieldsConstructor
public ObjectCreationExpr(final Expression scope, final ClassOrInterfaceType type, final NodeList typeArguments, final NodeList arguments, final NodeList> anonymousClassBody) {
this(null, scope, type, typeArguments, arguments, anonymousClassBody);
}
/**
* This constructor is used by the parser and is considered private.
*/
@Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator")
public ObjectCreationExpr(TokenRange tokenRange, Expression scope, ClassOrInterfaceType type, NodeList typeArguments, NodeList arguments, NodeList> anonymousClassBody) {
super(tokenRange);
setScope(scope);
setType(type);
setTypeArguments(typeArguments);
setArguments(arguments);
setAnonymousClassBody(anonymousClassBody);
customInitialization();
}
@Override
@Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
public R accept(final GenericVisitor v, final A arg) {
return v.visit(this, arg);
}
@Override
@Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
public void accept(final VoidVisitor v, final A arg) {
v.visit(this, arg);
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public Optional>> getAnonymousClassBody() {
return Optional.ofNullable(anonymousClassBody);
}
public void addAnonymousClassBody(BodyDeclaration body) {
if (anonymousClassBody == null)
anonymousClassBody = new NodeList<>();
anonymousClassBody.add(body);
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public NodeList getArguments() {
return arguments;
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public Optional getScope() {
return Optional.ofNullable(scope);
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public ClassOrInterfaceType getType() {
return type;
}
/**
* Sets the anonymousClassBody
* Null means no class body
* Empty NodeList means new ClassName(){ }
*
* @param anonymousClassBody the anonymousClassBody, can be null or empty
* @return this, the ObjectCreationExpr
*/
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public ObjectCreationExpr setAnonymousClassBody(final NodeList> anonymousClassBody) {
if (anonymousClassBody == this.anonymousClassBody) {
return this;
}
notifyPropertyChange(ObservableProperty.ANONYMOUS_CLASS_BODY, this.anonymousClassBody, anonymousClassBody);
if (this.anonymousClassBody != null)
this.anonymousClassBody.setParentNode(null);
this.anonymousClassBody = anonymousClassBody;
setAsParentNodeOf(anonymousClassBody);
return this;
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public ObjectCreationExpr setArguments(final NodeList arguments) {
assertNotNull(arguments);
if (arguments == this.arguments) {
return this;
}
notifyPropertyChange(ObservableProperty.ARGUMENTS, this.arguments, arguments);
if (this.arguments != null)
this.arguments.setParentNode(null);
this.arguments = arguments;
setAsParentNodeOf(arguments);
return this;
}
/**
* Sets the scope
*
* @param scope the scope, can be null
* @return this, the ObjectCreationExpr
*/
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public ObjectCreationExpr setScope(final Expression scope) {
if (scope == this.scope) {
return this;
}
notifyPropertyChange(ObservableProperty.SCOPE, this.scope, scope);
if (this.scope != null)
this.scope.setParentNode(null);
this.scope = scope;
setAsParentNodeOf(scope);
return this;
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public ObjectCreationExpr setType(final ClassOrInterfaceType type) {
assertNotNull(type);
if (type == this.type) {
return this;
}
notifyPropertyChange(ObservableProperty.TYPE, this.type, type);
if (this.type != null)
this.type.setParentNode(null);
this.type = type;
setAsParentNodeOf(type);
return this;
}
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public Optional> getTypeArguments() {
return Optional.ofNullable(typeArguments);
}
/**
* Sets the typeArguments
*
* @param typeArguments the typeArguments, can be null
* @return this, the ObjectCreationExpr
*/
@Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
public ObjectCreationExpr setTypeArguments(final NodeList typeArguments) {
if (typeArguments == this.typeArguments) {
return this;
}
notifyPropertyChange(ObservableProperty.TYPE_ARGUMENTS, this.typeArguments, typeArguments);
if (this.typeArguments != null)
this.typeArguments.setParentNode(null);
this.typeArguments = typeArguments;
setAsParentNodeOf(typeArguments);
return this;
}
@Override
@Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")
public boolean remove(Node node) {
if (node == null) {
return false;
}
if (anonymousClassBody != null) {
for (int i = 0; i < anonymousClassBody.size(); i++) {
if (anonymousClassBody.get(i) == node) {
anonymousClassBody.remove(i);
return true;
}
}
}
for (int i = 0; i < arguments.size(); i++) {
if (arguments.get(i) == node) {
arguments.remove(i);
return true;
}
}
if (scope != null) {
if (node == scope) {
removeScope();
return true;
}
}
if (typeArguments != null) {
for (int i = 0; i < typeArguments.size(); i++) {
if (typeArguments.get(i) == node) {
typeArguments.remove(i);
return true;
}
}
}
return super.remove(node);
}
@Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator")
public ObjectCreationExpr removeScope() {
return setScope((Expression) null);
}
@Override
@Generated("com.github.javaparser.generator.core.node.CloneGenerator")
public ObjectCreationExpr clone() {
return (ObjectCreationExpr) accept(new CloneVisitor(), null);
}
@Override
@Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator")
public ObjectCreationExprMetaModel getMetaModel() {
return JavaParserMetaModel.objectCreationExprMetaModel;
}
@Override
@Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator")
public boolean replace(Node node, Node replacementNode) {
if (node == null) {
return false;
}
if (anonymousClassBody != null) {
for (int i = 0; i < anonymousClassBody.size(); i++) {
if (anonymousClassBody.get(i) == node) {
anonymousClassBody.set(i, (BodyDeclaration) replacementNode);
return true;
}
}
}
for (int i = 0; i < arguments.size(); i++) {
if (arguments.get(i) == node) {
arguments.set(i, (Expression) replacementNode);
return true;
}
}
if (scope != null) {
if (node == scope) {
setScope((Expression) replacementNode);
return true;
}
}
if (node == type) {
setType((ClassOrInterfaceType) replacementNode);
return true;
}
if (typeArguments != null) {
for (int i = 0; i < typeArguments.size(); i++) {
if (typeArguments.get(i) == node) {
typeArguments.set(i, (Type) replacementNode);
return true;
}
}
}
return super.replace(node, replacementNode);
}
@Override
@Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
public boolean isObjectCreationExpr() {
return true;
}
@Override
@Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
public ObjectCreationExpr asObjectCreationExpr() {
return this;
}
@Override
@Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
public void ifObjectCreationExpr(Consumer action) {
action.accept(this);
}
/**
* Attempts to resolve the declaration corresponding to the invoked constructor. If successful, a
* {@link ResolvedConstructorDeclaration} representing the declaration of the constructor invoked by this
* {@code ObjectCreationExpr} is returned. Otherwise, an {@link UnsolvedSymbolException} is thrown.
*
* @return a {@link ResolvedConstructorDeclaration} representing the declaration of the invoked constructor.
* @throws UnsolvedSymbolException if the declaration corresponding to the object creation expression could not be
* resolved.
* @see NameExpr#resolve()
* @see FieldAccessExpr#resolve()
* @see MethodCallExpr#resolve()
* @see ExplicitConstructorInvocationStmt#resolve()
*/
@Override
public ResolvedConstructorDeclaration resolve() {
return getSymbolResolver().resolveDeclaration(this, ResolvedConstructorDeclaration.class);
}
@Override
@Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
public Optional toObjectCreationExpr() {
return Optional.of(this);
}
/*
* A class instance creation expression is a poly expression (§15.2) if it uses the diamond form for type
* arguments to the class, and it appears in an assignment context or an invocation context (§5.2, §5.3).
* Otherwise, it is a standalone expression.
*/
@Override
public boolean isPolyExpression() {
return isUsingDiamondOperator() && (appearsInInvocationContext() || appearsInAssignmentContext());
}
}