org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/SingleVariableDeclaration.java - objectteams/org.eclipse.objectteams - Gitiles

 /*******************************************************************************
  * Copyright (c) 2000, 2014 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.jdt.core.dom;

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;

 /**
  * Single variable declaration AST node type. Single variable
  * declaration nodes are used in a limited number of places, including formal
  * parameter lists and catch clauses. They are not used for field declarations
  * and regular variable declaration statements.
  * <pre>
  * SingleVariableDeclaration:
  *    { ExtendedModifier } Type {Annotation} [ <b>...</b> ] Identifier { Dimension } [ <b>=</b> Expression ]
  * </pre>
  * <p>
  * Note: There's currently no construct in the Java language that allows an initializer on a SingleVariableDeclaration.
  * </p>
  *
  * @since 2.0
  * @noinstantiate This class is not intended to be instantiated by clients.
  */
 @SuppressWarnings({"rawtypes", "unchecked"})
 public class SingleVariableDeclaration extends VariableDeclaration {

 	/**
 	 * The "modifiers" structural property of this node type (type: {@link Integer}) (JLS2 API only).
 	 * @deprecated In the JLS3 API, this property is replaced by {@link #MODIFIERS2_PROPERTY}.
 	 * @since 3.0
 	 */
 	public static final SimplePropertyDescriptor MODIFIERS_PROPERTY =
 		new SimplePropertyDescriptor(SingleVariableDeclaration.class, "modifiers", int.class, MANDATORY); //$NON-NLS-1$

 	/**
 	 * The "modifiers" structural property of this node type (element type: {@link IExtendedModifier}) (added in JLS3 API).
 	 * @since 3.1
 	 */
 	public static final ChildListPropertyDescriptor MODIFIERS2_PROPERTY =
 		new ChildListPropertyDescriptor(SingleVariableDeclaration.class, "modifiers", IExtendedModifier.class, CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "type" structural property of this node type (child type: {@link Type}).
 	 * @since 3.0
 	 */
 	public static final ChildPropertyDescriptor TYPE_PROPERTY =
 			new ChildPropertyDescriptor(SingleVariableDeclaration.class, "type", Type.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "varargsAnnotations" structural property of variable arguments of this node type (element type: {@link Annotation})
 	 * (added in JLS8 API).
 	 * @since 3.10
 	 */
 	public static final ChildListPropertyDescriptor VARARGS_ANNOTATIONS_PROPERTY =
 			new ChildListPropertyDescriptor(SingleVariableDeclaration.class, "varargsAnnotations", Annotation.class, CYCLE_RISK); //$NON-NLS-1$

 	/**
 	 * The "varargs" structural property of this node type (type: {@link Boolean}) (added in JLS3 API).
 	 * @since 3.1
 	 */
 	public static final SimplePropertyDescriptor VARARGS_PROPERTY =
 		new SimplePropertyDescriptor(SingleVariableDeclaration.class, "varargs", boolean.class, MANDATORY); //$NON-NLS-1$

 	/**
 	 * The "name" structural property of this node type (child type: {@link SimpleName}).
 	 * @since 3.0
 	 */
 	public static final ChildPropertyDescriptor NAME_PROPERTY =
 			internalNamePropertyFactory(SingleVariableDeclaration.class);

 	/**
 	 * The "extraDimensions" structural property of this node type (type: {@link Integer})
 	 * (before JLS8 only).
 	 *
 	 * @since 3.0
 	 * @deprecated In JLS8 and later, use {@link SingleVariableDeclaration#EXTRA_DIMENSIONS2_PROPERTY} instead.
 	 */
 	public static final SimplePropertyDescriptor EXTRA_DIMENSIONS_PROPERTY =
 			internalExtraDimensionsPropertyFactory(SingleVariableDeclaration.class);

 	/**
 	 * The "extraDimensions2" structural property of this node type (element type: {@link Dimension}) (added in JLS8 API).
 	 * @since 3.10
 	 */
 	public static final ChildListPropertyDescriptor EXTRA_DIMENSIONS2_PROPERTY =
 			internalExtraDimensions2PropertyFactory(SingleVariableDeclaration.class);

 	/**
 	 * The "initializer" structural property of this node type (child type: {@link Expression}).
 	 * @since 3.0
 	 */
 	public static final ChildPropertyDescriptor INITIALIZER_PROPERTY =
 			internalInitializerPropertyFactory(SingleVariableDeclaration.class);

 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 * @since 3.0
 	 */
 	private static final List PROPERTY_DESCRIPTORS_2_0;

 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 * @since 3.1
 	 */
 	private static final List PROPERTY_DESCRIPTORS_3_0;

 	/**
 	 * A list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor}),
 	 * or null if uninitialized.
 	 * @since 3.10
 	 */
 	private static final List PROPERTY_DESCRIPTORS_8_0;

 	static {
 		List propertyList = new ArrayList(6);
 		createPropertyList(SingleVariableDeclaration.class, propertyList);
 		addProperty(MODIFIERS_PROPERTY, propertyList);
 		addProperty(TYPE_PROPERTY, propertyList);
 		addProperty(NAME_PROPERTY, propertyList);
 		addProperty(EXTRA_DIMENSIONS_PROPERTY, propertyList);
 		addProperty(INITIALIZER_PROPERTY, propertyList);
 		PROPERTY_DESCRIPTORS_2_0 = reapPropertyList(propertyList);

 		propertyList = new ArrayList(7);
 		createPropertyList(SingleVariableDeclaration.class, propertyList);
 		addProperty(MODIFIERS2_PROPERTY, propertyList);
 		addProperty(TYPE_PROPERTY, propertyList);
 		addProperty(VARARGS_PROPERTY, propertyList);
 		addProperty(NAME_PROPERTY, propertyList);
 		addProperty(EXTRA_DIMENSIONS_PROPERTY, propertyList);
 		addProperty(INITIALIZER_PROPERTY, propertyList);
 		PROPERTY_DESCRIPTORS_3_0 = reapPropertyList(propertyList);

 		propertyList = new ArrayList(8);
 		createPropertyList(SingleVariableDeclaration.class, propertyList);
 		addProperty(MODIFIERS2_PROPERTY, propertyList);
 		addProperty(TYPE_PROPERTY, propertyList);
 		addProperty(VARARGS_ANNOTATIONS_PROPERTY, propertyList);
 		addProperty(VARARGS_PROPERTY, propertyList);
 		addProperty(NAME_PROPERTY, propertyList);
 		addProperty(EXTRA_DIMENSIONS2_PROPERTY, propertyList);
 		addProperty(INITIALIZER_PROPERTY, propertyList);
 		PROPERTY_DESCRIPTORS_8_0 = reapPropertyList(propertyList);
 	}

 	/**
 	 * Returns a list of structural property descriptors for this node type.
 	 * Clients must not modify the result.
 	 *
 	 * @param apiLevel the API level; one of the
 	 * <code>AST.JLS*</code> constants
 	 * @return a list of property descriptors (element type:
 	 * {@link StructuralPropertyDescriptor})
 	 * @since 3.0
 	 */
 	public static List propertyDescriptors(int apiLevel) {
 		if (apiLevel == AST.JLS2_INTERNAL) {
 			return PROPERTY_DESCRIPTORS_2_0;
 		} else if (apiLevel < AST.JLS8_INTERNAL) {
 			return PROPERTY_DESCRIPTORS_3_0;
 		} else {
 			return PROPERTY_DESCRIPTORS_8_0;
 		}
 	}

 	/**
 	 * The extended modifiers (element type: {@link IExtendedModifier}).
 	 * Null in JLS2. Added in JLS3; defaults to an empty list
 	 * (see constructor).
 	 *
 	 * @since 3.1
 	 */
 	private ASTNode.NodeList modifiers = null;

 	/**
 	 * The modifiers; bit-wise or of Modifier flags.
 	 * Defaults to none. Not used in 3.0.
 	 */
 	private int modifierFlags = Modifier.NONE;

 	/**
 	 * The type; lazily initialized; defaults to an unspecified,
 	 * legal type.
 	 */
 	private Type type = null;

 	/**
 	 * The type annotations on the varargs token (element type: {@link Annotation}).
 	 * Null before JLS8. Added in JLS8; defaults to an empty list
 	 * (see constructor).
 	 *
 	 * @since 3.10
 	 */
 	private ASTNode.NodeList varargsAnnotations = null;

 	/**
 	 * Indicates the last parameter of a variable arity method;
 	 * defaults to false.
 	 *
 	 * @since 3.1
 	 */
 	private boolean variableArity = false;

 //{ObjectTeams: emulation for declared lifting:
 	private SingleVariableDeclaration fakedRoleVariable;
 	public static final ChildPropertyDescriptor FAKED_ROLE_VARIABLE =
 			new ChildPropertyDescriptor(SingleVariableDeclaration.class, "fakedRoleVariable", SingleVariableDeclaration.class, OPTIONAL, NO_CYCLE_RISK); //$NON-NLS-1$

 	SingleVariableDeclaration newFakedRoleVariable(LiftingType liftingType) {
 		if (this.fakedRoleVariable != null)
 			return null;
 		this.fakedRoleVariable = this.ast.newSingleVariableDeclaration();
 		this.fakedRoleVariable.setName((SimpleName) getName().clone(this.ast));
 		Type roleType = liftingType.getRoleType();
 		this.fakedRoleVariable.setType((Type) roleType.clone(this.ast));
 		for(Object mod : this.modifiers)
 			this.fakedRoleVariable.modifiers().add(((Modifier)mod).clone(this.ast));
 		return this.fakedRoleVariable;
 	}
 	@Override
 	void setParent(ASTNode parent, StructuralPropertyDescriptor property) {
 		// we might have one more node that needs a parent:
 		super.setParent(parent, property);
 		if (this.fakedRoleVariable != null)
 			this.fakedRoleVariable.setParent(this, FAKED_ROLE_VARIABLE);
 	}
 	/**
 	 * Retrieve a variable declaration that represents the role side (inner)
 	 * of an argument with declared lifting, else null.
 	 * @since 3.9
 	 */
 	public SingleVariableDeclaration getFakedRoleVariable() {
 		return this.fakedRoleVariable;
 	}
 // SH}

 	/**
 	 * Creates a new AST node for a variable declaration owned by the given
 	 * AST. By default, the variable declaration has: no modifiers, an
 	 * unspecified (but legal) type, an unspecified (but legal) variable name,
 	 * 0 dimensions after the variable; no initializer; not variable arity.
 	 * <p>
 	 * N.B. This constructor is package-private.
 	 * </p>
 	 *
 	 * @param ast the AST that is to own this node
 	 */
 	SingleVariableDeclaration(AST ast) {
 		super(ast);
 		if (ast.apiLevel >= AST.JLS3_INTERNAL) {
 			this.modifiers = new ASTNode.NodeList(MODIFIERS2_PROPERTY);
 			if (ast.apiLevel >= AST.JLS8_INTERNAL) {
 				this.varargsAnnotations = new ASTNode.NodeList(VARARGS_ANNOTATIONS_PROPERTY);
 			}
 		}
 	}

 	@Override
 	final ChildPropertyDescriptor internalNameProperty() {
 		return NAME_PROPERTY;
 	}

 	@Override
 	final SimplePropertyDescriptor internalExtraDimensionsProperty() {
 		return EXTRA_DIMENSIONS_PROPERTY;
 	}

 	@Override
 	final ChildListPropertyDescriptor internalExtraDimensions2Property() {
 		return EXTRA_DIMENSIONS2_PROPERTY;
 	}

 	@Override
 	final ChildPropertyDescriptor internalInitializerProperty() {
 		return INITIALIZER_PROPERTY;
 	}

 	@Override
 	final List internalStructuralPropertiesForType(int apiLevel) {
 		return propertyDescriptors(apiLevel);
 	}

 	@Override
 	final int internalGetSetIntProperty(SimplePropertyDescriptor property, boolean get, int value) {
 		if (property == MODIFIERS_PROPERTY) {
 			if (get) {
 				return getModifiers();
 			} else {
 				setModifiers(value);
 				return 0;
 			}
 		}
 		if (property == EXTRA_DIMENSIONS_PROPERTY) {
 			if (get) {
 				return getExtraDimensions();
 			} else {
 				internalSetExtraDimensions(value);
 				return 0;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetIntProperty(property, get, value);
 	}

 	@Override
 	final boolean internalGetSetBooleanProperty(SimplePropertyDescriptor property, boolean get, boolean value) {
 		if (property == VARARGS_PROPERTY) {
 			if (get) {
 				return isVarargs();
 			} else {
 				setVarargs(value);
 				return false;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetBooleanProperty(property, get, value);
 	}

 	@Override
 	final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
 		if (property == TYPE_PROPERTY) {
 			if (get) {
 				return getType();
 			} else {
 				setType((Type) child);
 				return null;
 			}
 		}
 		if (property == NAME_PROPERTY) {
 			if (get) {
 				return getName();
 			} else {
 				setName((SimpleName) child);
 				return null;
 			}
 		}
 		if (property == INITIALIZER_PROPERTY) {
 			if (get) {
 				return getInitializer();
 			} else {
 				setInitializer((Expression) child);
 				return null;
 			}
 		}
 		// allow default implementation to flag the error
 		return super.internalGetSetChildProperty(property, get, child);
 	}

 	@Override
 	final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
 		if (property == MODIFIERS2_PROPERTY) {
 			return modifiers();
 		}
 		if (property == VARARGS_ANNOTATIONS_PROPERTY) {
 			return varargsAnnotations();
 		}
 		if (property == EXTRA_DIMENSIONS2_PROPERTY) {
 			return extraDimensions();
 		}
 		// allow default implementation to flag the error
 		return super.internalGetChildListProperty(property);
 	}

 	@Override
 	final int getNodeType0() {
 		return SINGLE_VARIABLE_DECLARATION;
 	}

 	@Override
 	ASTNode clone0(AST target) {
 		SingleVariableDeclaration result = new SingleVariableDeclaration(target);
 		result.setSourceRange(getStartPosition(), getLength());
 		if (this.ast.apiLevel == AST.JLS2_INTERNAL) {
 			result.setModifiers(getModifiers());
 		} else {
 			result.modifiers().addAll(ASTNode.copySubtrees(target, modifiers()));
 			result.setVarargs(isVarargs());
 		}
 		result.setType((Type) getType().clone(target));
 		if (this.ast.apiLevel >= AST.JLS8_INTERNAL) {
 			result.varargsAnnotations().addAll(
 					ASTNode.copySubtrees(target, varargsAnnotations()));
 		}
 		result.setName((SimpleName) getName().clone(target));
 		if (this.ast.apiLevel >= AST.JLS8_INTERNAL) {
 			result.extraDimensions().addAll(
 					ASTNode.copySubtrees(target, this.extraDimensions()));
 		} else {
 			result.internalSetExtraDimensions(getExtraDimensions());
 		}
 		result.setInitializer(
 				(Expression) ASTNode.copySubtree(target, getInitializer()));
 		return result;
 	}

 	@Override
 	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
 		// dispatch to correct overloaded match method
 		return matcher.match(this, other);
 	}

 	@Override
 	void accept0(ASTVisitor visitor) {
 		boolean visitChildren = visitor.visit(this);
 		if (visitChildren) {
 			// visit children in normal left to right reading order
 			if (this.ast.apiLevel >= AST.JLS3_INTERNAL) {
 				acceptChildren(visitor, this.modifiers);
 			}
 			acceptChild(visitor, getType());
 			if (this.ast.apiLevel >= AST.JLS8_INTERNAL && isVarargs()) {
 				acceptChildren(visitor, this.varargsAnnotations);
 			}
 			acceptChild(visitor, getName());
 			if (this.ast.apiLevel >= AST.JLS8_INTERNAL){
 				acceptChildren(visitor, this.extraDimensions);
 			}
 			acceptChild(visitor, getInitializer());
 		}
 		visitor.endVisit(this);
 	}

 	/**
 	 * Returns the live ordered list of modifiers and annotations
 	 * of this declaration (added in JLS3 API).
 	 * <p>
 	 * Note that the final modifier is the only meaningful modifier for local
 	 * variable and formal parameter declarations.
 	 * </p>
 	 *
 	 * @return the live list of modifiers and annotations
 	 *    (element type: {@link IExtendedModifier})
 	 * @exception UnsupportedOperationException if this operation is used in
 	 * a JLS2 AST
 	 * @since 3.1
 	 */
 	public List modifiers() {
 		// more efficient than just calling unsupportedIn2() to check
 		if (this.modifiers == null) {
 			unsupportedIn2();
 		}
 		return this.modifiers;
 	}

 	/**
 	 * Returns the modifiers explicitly specified on this declaration.
 	 * <p>
 	 * In the JLS3 API, this method is a convenience method that
 	 * computes these flags from <code>modifiers()</code>.
 	 * </p>
 	 *
 	 * @return the bit-wise or of <code>Modifier</code> constants
 	 * @see Modifier
 	 */
 	public int getModifiers() {
 		// more efficient than checking getAST().API_LEVEL
 		if (this.modifiers == null) {
 			// JLS2 behavior - bona fide property
 			return this.modifierFlags;
 		} else {
 			// JLS3 behavior - convenient method
 			// performance could be improved by caching computed flags
 			// but this would require tracking changes to this.modifiers
 			int computedModifierFlags = Modifier.NONE;
 			for (Iterator it = modifiers().iterator(); it.hasNext(); ) {
 				Object x = it.next();
 				if (x instanceof Modifier) {
 					computedModifierFlags |= ((Modifier) x).getKeyword().toFlagValue();
 				}
 			}
 			return computedModifierFlags;
 		}
 	}

 	/**
 	 * Sets the modifiers explicitly specified on this declaration (JLS2 API only).
 	 * <p>
 	 * The following modifiers are meaningful for fields: public, private, protected,
 	 * static, final, volatile, and transient. For local variable and formal
 	 * parameter declarations, the only meaningful modifier is final.
 	 * </p>
 	 *
 	 * @param modifiers the given modifiers (bit-wise or of <code>Modifier</code> constants)
 	 * @exception UnsupportedOperationException if this operation is used in
 	 * an AST later than JLS2
 	 * @see Modifier
 	 * @deprecated In the JLS3 API, this method is replaced by
 	 * {@link  #modifiers()} which contains a list of a <code>Modifier</code> nodes.
 	 */
 	public void setModifiers(int modifiers) {
 		internalSetModifiers(modifiers);
 	}

 	/**
 	 * Internal synonym for deprecated method. Used to avoid
 	 * deprecation warnings.
 	 * @since 3.1
 	 */
 	/*package*/ final void internalSetModifiers(int pmodifiers) {
 	    supportedOnlyIn2();
 		preValueChange(MODIFIERS_PROPERTY);
 		this.modifierFlags = pmodifiers;
 		postValueChange(MODIFIERS_PROPERTY);
 	}

 	/**
 	 * Returns the type of the variable declared in this variable declaration,
 	 * exclusive of any extra array dimensions or the varargs dimension.
 	 * <p>
 	 * WARNING: For array-typed varargs, the {@link Type#resolveBinding() binding}
 	 * of the returned <code>Type</code> is not useful, since it represents
 	 * an unused type. It misses the last (innermost) dimension that carries the
 	 * {@link #varargsAnnotations()}.
 	 * </p>
 	 *
 	 * @return the type
 	 */
 	public Type getType() {
 		if (this.type == null) {
 			// lazy init must be thread-safe for readers
 			synchronized (this) {
 				if (this.type == null) {
 					preLazyInit();
 					this.type = this.ast.newPrimitiveType(PrimitiveType.INT);
 					postLazyInit(this.type, TYPE_PROPERTY);
 				}
 			}
 		}
 		return this.type;
 	}

 	/**
 	 * Sets the type of the variable declared in this variable declaration to
 	 * the given type, exclusive of any extra array dimensions.
 	 *
 	 * @param type the new type
 	 * @exception IllegalArgumentException if:
 	 * <ul>
 	 * <li>the node belongs to a different AST</li>
 	 * <li>the node already has a parent</li>
 	 * </ul>
 	 */
 	public void setType(Type type) {
 		if (type == null) {
 			throw new IllegalArgumentException();
 		}
 		ASTNode oldChild = this.type;
 		preReplaceChild(oldChild, type, TYPE_PROPERTY);
 		this.type = type;
 		postReplaceChild(oldChild, type, TYPE_PROPERTY);
 	}

 	/**
 	 * Returns whether this declaration declares the last parameter of
 	 * a variable arity method (added in JLS3 API).
 	 * <p>
 	 * Note that the binding for the type <code>Foo</code> in the vararg method
 	 * declaration <code>void fun(Foo... args)</code> is always for the type as
 	 * written; i.e., the type binding for <code>Foo</code>. However, if you
 	 * navigate from the method declaration to its method binding to the
 	 * type binding for its last parameter, the type binding for the vararg
 	 * parameter is always an array type (i.e., <code>Foo[]</code>) reflecting
 	 * the way vararg methods get compiled.
 	 * </p>
 	 * <p>
 	 * WARNING: For array-typed varargs, the {@link Type#resolveBinding() binding}
 	 * of the variable's {@link #getType() type} is not useful, since it represents
 	 * an unused type. It misses the last (innermost) dimension that carries the
 	 * {@link #varargsAnnotations()}.
 	 * </p>
 	 *
 	 * @return <code>true</code> if this is a variable arity parameter declaration,
 	 *    and <code>false</code> otherwise
 	 * @exception UnsupportedOperationException if this operation is used in
 	 * a JLS2 AST
 	 * @since 3.1
 	 */
 	public boolean isVarargs() {
 		// more efficient than just calling unsupportedIn2() to check
 		if (this.modifiers == null) {
 			unsupportedIn2();
 		}
 		return this.variableArity;
 	}

 	/**
 	 * Sets whether this declaration declares the last parameter of
 	 * a variable arity method (added in JLS3 API).
 	 *
 	 * @param variableArity <code>true</code> if this is a variable arity
 	 *    parameter declaration, and <code>false</code> otherwise
 	 * @since 3.1
 	 */
 	public void setVarargs(boolean variableArity) {
 		// more efficient than just calling unsupportedIn2() to check
 		if (this.modifiers == null) {
 			unsupportedIn2();
 		}
 		preValueChange(VARARGS_PROPERTY);
 		this.variableArity = variableArity;
 		postValueChange(VARARGS_PROPERTY);
 	}

 	/**
 	 * Returns the ordered list of annotations on the varargs token (added in JLS8 API).
 	 * <p>
 	 * WARNING: For array-typed varargs, the {@link Type#resolveBinding() binding}
 	 * of the variable's {@link #getType() type} is not useful, since it represents
 	 * an unused type. It misses the last (innermost) dimension that carries the
 	 * returned {@code varargsAnnotations}.
 	 * </p>
 	 *
 	 * @return the list of annotations on the varargs token (element type: {@link Annotation})
 	 * @exception UnsupportedOperationException if this operation is used
 	 *            in a JLS2, JLS3 or JLS4 AST
 	 * @see #isVarargs()
 	 * @since 3.10
 	 */
 	public List varargsAnnotations() {
 		if (this.varargsAnnotations == null) {
 			unsupportedIn2_3_4();
 		}
 		return this.varargsAnnotations;
 	}

 	@Override
 	int memSize() {
 		// treat Operator as free
 		return BASE_NODE_SIZE + 9 * 4;
 	}

 	@Override
 	int treeSize() {
 		return
 			memSize()
 			+ (this.modifiers == null ? 0 : this.modifiers.listSize())
 			+ (this.type == null ? 0 : getType().treeSize())
 			+ (this.varargsAnnotations == null ? 0 : this.varargsAnnotations.listSize())
 			+ (this.variableName == null ? 0 : getName().treeSize())
 			+ (this.extraDimensions == null ? 0 : this.extraDimensions.listSize())
 			+ (this.optionalInitializer == null ? 0 : getInitializer().treeSize());
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2014 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/

	package org.eclipse.jdt.core.dom;

	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;

	/**
	* Single variable declaration AST node type. Single variable
	* declaration nodes are used in a limited number of places, including formal
	* parameter lists and catch clauses. They are not used for field declarations
	* and regular variable declaration statements.
	* <pre>
	* SingleVariableDeclaration:
	* { ExtendedModifier } Type {Annotation} [ <b>...</b> ] Identifier { Dimension } [ <b>=</b> Expression ]
	* </pre>
	* <p>
	* Note: There's currently no construct in the Java language that allows an initializer on a SingleVariableDeclaration.
	* </p>
	*
	* @since 2.0
	* @noinstantiate This class is not intended to be instantiated by clients.
	*/
	@SuppressWarnings({"rawtypes", "unchecked"})
	public class SingleVariableDeclaration extends VariableDeclaration {

	/**
	* The "modifiers" structural property of this node type (type: {@link Integer}) (JLS2 API only).
	* @deprecated In the JLS3 API, this property is replaced by {@link #MODIFIERS2_PROPERTY}.
	* @since 3.0
	*/
	public static final SimplePropertyDescriptor MODIFIERS_PROPERTY =
	new SimplePropertyDescriptor(SingleVariableDeclaration.class, "modifiers", int.class, MANDATORY); //$NON-NLS-1$

	/**
	* The "modifiers" structural property of this node type (element type: {@link IExtendedModifier}) (added in JLS3 API).
	* @since 3.1
	*/
	public static final ChildListPropertyDescriptor MODIFIERS2_PROPERTY =
	new ChildListPropertyDescriptor(SingleVariableDeclaration.class, "modifiers", IExtendedModifier.class, CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "type" structural property of this node type (child type: {@link Type}).
	* @since 3.0
	*/
	public static final ChildPropertyDescriptor TYPE_PROPERTY =
	new ChildPropertyDescriptor(SingleVariableDeclaration.class, "type", Type.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "varargsAnnotations" structural property of variable arguments of this node type (element type: {@link Annotation})
	* (added in JLS8 API).
	* @since 3.10
	*/
	public static final ChildListPropertyDescriptor VARARGS_ANNOTATIONS_PROPERTY =
	new ChildListPropertyDescriptor(SingleVariableDeclaration.class, "varargsAnnotations", Annotation.class, CYCLE_RISK); //$NON-NLS-1$

	/**
	* The "varargs" structural property of this node type (type: {@link Boolean}) (added in JLS3 API).
	* @since 3.1
	*/
	public static final SimplePropertyDescriptor VARARGS_PROPERTY =
	new SimplePropertyDescriptor(SingleVariableDeclaration.class, "varargs", boolean.class, MANDATORY); //$NON-NLS-1$

	/**
	* The "name" structural property of this node type (child type: {@link SimpleName}).
	* @since 3.0
	*/
	public static final ChildPropertyDescriptor NAME_PROPERTY =
	internalNamePropertyFactory(SingleVariableDeclaration.class);

	/**
	* The "extraDimensions" structural property of this node type (type: {@link Integer})
	* (before JLS8 only).
	*
	* @since 3.0
	* @deprecated In JLS8 and later, use {@link SingleVariableDeclaration#EXTRA_DIMENSIONS2_PROPERTY} instead.
	*/
	public static final SimplePropertyDescriptor EXTRA_DIMENSIONS_PROPERTY =
	internalExtraDimensionsPropertyFactory(SingleVariableDeclaration.class);

	/**
	* The "extraDimensions2" structural property of this node type (element type: {@link Dimension}) (added in JLS8 API).
	* @since 3.10
	*/
	public static final ChildListPropertyDescriptor EXTRA_DIMENSIONS2_PROPERTY =
	internalExtraDimensions2PropertyFactory(SingleVariableDeclaration.class);

	/**
	* The "initializer" structural property of this node type (child type: {@link Expression}).
	* @since 3.0
	*/
	public static final ChildPropertyDescriptor INITIALIZER_PROPERTY =
	internalInitializerPropertyFactory(SingleVariableDeclaration.class);

	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	* @since 3.0
	*/
	private static final List PROPERTY_DESCRIPTORS_2_0;

	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	* @since 3.1
	*/
	private static final List PROPERTY_DESCRIPTORS_3_0;

	/**
	* A list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor}),
	* or null if uninitialized.
	* @since 3.10
	*/
	private static final List PROPERTY_DESCRIPTORS_8_0;

	static {
	List propertyList = new ArrayList(6);
	createPropertyList(SingleVariableDeclaration.class, propertyList);
	addProperty(MODIFIERS_PROPERTY, propertyList);
	addProperty(TYPE_PROPERTY, propertyList);
	addProperty(NAME_PROPERTY, propertyList);
	addProperty(EXTRA_DIMENSIONS_PROPERTY, propertyList);
	addProperty(INITIALIZER_PROPERTY, propertyList);
	PROPERTY_DESCRIPTORS_2_0 = reapPropertyList(propertyList);

	propertyList = new ArrayList(7);
	createPropertyList(SingleVariableDeclaration.class, propertyList);
	addProperty(MODIFIERS2_PROPERTY, propertyList);
	addProperty(TYPE_PROPERTY, propertyList);
	addProperty(VARARGS_PROPERTY, propertyList);
	addProperty(NAME_PROPERTY, propertyList);
	addProperty(EXTRA_DIMENSIONS_PROPERTY, propertyList);
	addProperty(INITIALIZER_PROPERTY, propertyList);
	PROPERTY_DESCRIPTORS_3_0 = reapPropertyList(propertyList);

	propertyList = new ArrayList(8);
	createPropertyList(SingleVariableDeclaration.class, propertyList);
	addProperty(MODIFIERS2_PROPERTY, propertyList);
	addProperty(TYPE_PROPERTY, propertyList);
	addProperty(VARARGS_ANNOTATIONS_PROPERTY, propertyList);
	addProperty(VARARGS_PROPERTY, propertyList);
	addProperty(NAME_PROPERTY, propertyList);
	addProperty(EXTRA_DIMENSIONS2_PROPERTY, propertyList);
	addProperty(INITIALIZER_PROPERTY, propertyList);
	PROPERTY_DESCRIPTORS_8_0 = reapPropertyList(propertyList);
	}

	/**
	* Returns a list of structural property descriptors for this node type.
	* Clients must not modify the result.
	*
	* @param apiLevel the API level; one of the
	* <code>AST.JLS*</code> constants
	* @return a list of property descriptors (element type:
	* {@link StructuralPropertyDescriptor})
	* @since 3.0
	*/
	public static List propertyDescriptors(int apiLevel) {
	if (apiLevel == AST.JLS2_INTERNAL) {
	return PROPERTY_DESCRIPTORS_2_0;
	} else if (apiLevel < AST.JLS8_INTERNAL) {
	return PROPERTY_DESCRIPTORS_3_0;
	} else {
	return PROPERTY_DESCRIPTORS_8_0;
	}
	}

	/**
	* The extended modifiers (element type: {@link IExtendedModifier}).
	* Null in JLS2. Added in JLS3; defaults to an empty list
	* (see constructor).
	*
	* @since 3.1
	*/
	private ASTNode.NodeList modifiers = null;

	/**
	* The modifiers; bit-wise or of Modifier flags.
	* Defaults to none. Not used in 3.0.
	*/
	private int modifierFlags = Modifier.NONE;

	/**
	* The type; lazily initialized; defaults to an unspecified,
	* legal type.
	*/
	private Type type = null;

	/**
	* The type annotations on the varargs token (element type: {@link Annotation}).
	* Null before JLS8. Added in JLS8; defaults to an empty list
	* (see constructor).
	*
	* @since 3.10
	*/
	private ASTNode.NodeList varargsAnnotations = null;

	/**
	* Indicates the last parameter of a variable arity method;
	* defaults to false.
	*
	* @since 3.1
	*/
	private boolean variableArity = false;

	//{ObjectTeams: emulation for declared lifting:
	private SingleVariableDeclaration fakedRoleVariable;
	public static final ChildPropertyDescriptor FAKED_ROLE_VARIABLE =
	new ChildPropertyDescriptor(SingleVariableDeclaration.class, "fakedRoleVariable", SingleVariableDeclaration.class, OPTIONAL, NO_CYCLE_RISK); //$NON-NLS-1$

	SingleVariableDeclaration newFakedRoleVariable(LiftingType liftingType) {
	if (this.fakedRoleVariable != null)
	return null;
	this.fakedRoleVariable = this.ast.newSingleVariableDeclaration();
	this.fakedRoleVariable.setName((SimpleName) getName().clone(this.ast));
	Type roleType = liftingType.getRoleType();
	this.fakedRoleVariable.setType((Type) roleType.clone(this.ast));
	for(Object mod : this.modifiers)
	this.fakedRoleVariable.modifiers().add(((Modifier)mod).clone(this.ast));
	return this.fakedRoleVariable;
	}
	@Override
	void setParent(ASTNode parent, StructuralPropertyDescriptor property) {
	// we might have one more node that needs a parent:
	super.setParent(parent, property);
	if (this.fakedRoleVariable != null)
	this.fakedRoleVariable.setParent(this, FAKED_ROLE_VARIABLE);
	}
	/**
	* Retrieve a variable declaration that represents the role side (inner)
	* of an argument with declared lifting, else null.
	* @since 3.9
	*/
	public SingleVariableDeclaration getFakedRoleVariable() {
	return this.fakedRoleVariable;
	}
	// SH}

	/**
	* Creates a new AST node for a variable declaration owned by the given
	* AST. By default, the variable declaration has: no modifiers, an
	* unspecified (but legal) type, an unspecified (but legal) variable name,
	* 0 dimensions after the variable; no initializer; not variable arity.
	* <p>
	* N.B. This constructor is package-private.
	* </p>
	*
	* @param ast the AST that is to own this node
	*/
	SingleVariableDeclaration(AST ast) {
	super(ast);
	if (ast.apiLevel >= AST.JLS3_INTERNAL) {
	this.modifiers = new ASTNode.NodeList(MODIFIERS2_PROPERTY);
	if (ast.apiLevel >= AST.JLS8_INTERNAL) {
	this.varargsAnnotations = new ASTNode.NodeList(VARARGS_ANNOTATIONS_PROPERTY);
	}
	}
	}

	@Override
	final ChildPropertyDescriptor internalNameProperty() {
	return NAME_PROPERTY;
	}

	@Override
	final SimplePropertyDescriptor internalExtraDimensionsProperty() {
	return EXTRA_DIMENSIONS_PROPERTY;
	}

	@Override
	final ChildListPropertyDescriptor internalExtraDimensions2Property() {
	return EXTRA_DIMENSIONS2_PROPERTY;
	}

	@Override
	final ChildPropertyDescriptor internalInitializerProperty() {
	return INITIALIZER_PROPERTY;
	}

	@Override
	final List internalStructuralPropertiesForType(int apiLevel) {
	return propertyDescriptors(apiLevel);
	}

	@Override
	final int internalGetSetIntProperty(SimplePropertyDescriptor property, boolean get, int value) {
	if (property == MODIFIERS_PROPERTY) {
	if (get) {
	return getModifiers();
	} else {
	setModifiers(value);
	return 0;
	}
	}
	if (property == EXTRA_DIMENSIONS_PROPERTY) {
	if (get) {
	return getExtraDimensions();
	} else {
	internalSetExtraDimensions(value);
	return 0;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetIntProperty(property, get, value);
	}

	@Override
	final boolean internalGetSetBooleanProperty(SimplePropertyDescriptor property, boolean get, boolean value) {
	if (property == VARARGS_PROPERTY) {
	if (get) {
	return isVarargs();
	} else {
	setVarargs(value);
	return false;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetBooleanProperty(property, get, value);
	}

	@Override
	final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
	if (property == TYPE_PROPERTY) {
	if (get) {
	return getType();
	} else {
	setType((Type) child);
	return null;
	}
	}
	if (property == NAME_PROPERTY) {
	if (get) {
	return getName();
	} else {
	setName((SimpleName) child);
	return null;
	}
	}
	if (property == INITIALIZER_PROPERTY) {
	if (get) {
	return getInitializer();
	} else {
	setInitializer((Expression) child);
	return null;
	}
	}
	// allow default implementation to flag the error
	return super.internalGetSetChildProperty(property, get, child);
	}

	@Override
	final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
	if (property == MODIFIERS2_PROPERTY) {
	return modifiers();
	}
	if (property == VARARGS_ANNOTATIONS_PROPERTY) {
	return varargsAnnotations();
	}
	if (property == EXTRA_DIMENSIONS2_PROPERTY) {
	return extraDimensions();
	}
	// allow default implementation to flag the error
	return super.internalGetChildListProperty(property);
	}

	@Override
	final int getNodeType0() {
	return SINGLE_VARIABLE_DECLARATION;
	}

	@Override
	ASTNode clone0(AST target) {
	SingleVariableDeclaration result = new SingleVariableDeclaration(target);
	result.setSourceRange(getStartPosition(), getLength());
	if (this.ast.apiLevel == AST.JLS2_INTERNAL) {
	result.setModifiers(getModifiers());
	} else {
	result.modifiers().addAll(ASTNode.copySubtrees(target, modifiers()));
	result.setVarargs(isVarargs());
	}
	result.setType((Type) getType().clone(target));
	if (this.ast.apiLevel >= AST.JLS8_INTERNAL) {
	result.varargsAnnotations().addAll(
	ASTNode.copySubtrees(target, varargsAnnotations()));
	}
	result.setName((SimpleName) getName().clone(target));
	if (this.ast.apiLevel >= AST.JLS8_INTERNAL) {
	result.extraDimensions().addAll(
	ASTNode.copySubtrees(target, this.extraDimensions()));
	} else {
	result.internalSetExtraDimensions(getExtraDimensions());
	}
	result.setInitializer(
	(Expression) ASTNode.copySubtree(target, getInitializer()));
	return result;
	}

	@Override
	final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
	// dispatch to correct overloaded match method
	return matcher.match(this, other);
	}

	@Override
	void accept0(ASTVisitor visitor) {
	boolean visitChildren = visitor.visit(this);
	if (visitChildren) {
	// visit children in normal left to right reading order
	if (this.ast.apiLevel >= AST.JLS3_INTERNAL) {
	acceptChildren(visitor, this.modifiers);
	}
	acceptChild(visitor, getType());
	if (this.ast.apiLevel >= AST.JLS8_INTERNAL && isVarargs()) {
	acceptChildren(visitor, this.varargsAnnotations);
	}
	acceptChild(visitor, getName());
	if (this.ast.apiLevel >= AST.JLS8_INTERNAL){
	acceptChildren(visitor, this.extraDimensions);
	}
	acceptChild(visitor, getInitializer());
	}
	visitor.endVisit(this);
	}

	/**
	* Returns the live ordered list of modifiers and annotations
	* of this declaration (added in JLS3 API).
	* <p>
	* Note that the final modifier is the only meaningful modifier for local
	* variable and formal parameter declarations.
	* </p>
	*
	* @return the live list of modifiers and annotations
	* (element type: {@link IExtendedModifier})
	* @exception UnsupportedOperationException if this operation is used in
	* a JLS2 AST
	* @since 3.1
	*/
	public List modifiers() {
	// more efficient than just calling unsupportedIn2() to check
	if (this.modifiers == null) {
	unsupportedIn2();
	}
	return this.modifiers;
	}

	/**
	* Returns the modifiers explicitly specified on this declaration.
	* <p>
	* In the JLS3 API, this method is a convenience method that
	* computes these flags from <code>modifiers()</code>.
	* </p>
	*
	* @return the bit-wise or of <code>Modifier</code> constants
	* @see Modifier
	*/
	public int getModifiers() {
	// more efficient than checking getAST().API_LEVEL
	if (this.modifiers == null) {
	// JLS2 behavior - bona fide property
	return this.modifierFlags;
	} else {
	// JLS3 behavior - convenient method
	// performance could be improved by caching computed flags
	// but this would require tracking changes to this.modifiers
	int computedModifierFlags = Modifier.NONE;
	for (Iterator it = modifiers().iterator(); it.hasNext(); ) {
	Object x = it.next();
	if (x instanceof Modifier) {
	computedModifierFlags \|= ((Modifier) x).getKeyword().toFlagValue();
	}
	}
	return computedModifierFlags;
	}
	}

	/**
	* Sets the modifiers explicitly specified on this declaration (JLS2 API only).
	* <p>
	* The following modifiers are meaningful for fields: public, private, protected,
	* static, final, volatile, and transient. For local variable and formal
	* parameter declarations, the only meaningful modifier is final.
	* </p>
	*
	* @param modifiers the given modifiers (bit-wise or of <code>Modifier</code> constants)
	* @exception UnsupportedOperationException if this operation is used in
	* an AST later than JLS2
	* @see Modifier
	* @deprecated In the JLS3 API, this method is replaced by
	* {@link #modifiers()} which contains a list of a <code>Modifier</code> nodes.
	*/
	public void setModifiers(int modifiers) {
	internalSetModifiers(modifiers);
	}

	/**
	* Internal synonym for deprecated method. Used to avoid
	* deprecation warnings.
	* @since 3.1
	*/
	/package/ final void internalSetModifiers(int pmodifiers) {
	supportedOnlyIn2();
	preValueChange(MODIFIERS_PROPERTY);
	this.modifierFlags = pmodifiers;
	postValueChange(MODIFIERS_PROPERTY);
	}

	/**
	* Returns the type of the variable declared in this variable declaration,
	* exclusive of any extra array dimensions or the varargs dimension.
	* <p>
	* WARNING: For array-typed varargs, the {@link Type#resolveBinding() binding}
	* of the returned <code>Type</code> is not useful, since it represents
	* an unused type. It misses the last (innermost) dimension that carries the
	* {@link #varargsAnnotations()}.
	* </p>
	*
	* @return the type
	*/
	public Type getType() {
	if (this.type == null) {
	// lazy init must be thread-safe for readers
	synchronized (this) {
	if (this.type == null) {
	preLazyInit();
	this.type = this.ast.newPrimitiveType(PrimitiveType.INT);
	postLazyInit(this.type, TYPE_PROPERTY);
	}
	}
	}
	return this.type;
	}

	/**
	* Sets the type of the variable declared in this variable declaration to
	* the given type, exclusive of any extra array dimensions.
	*
	* @param type the new type
	* @exception IllegalArgumentException if:
	* <ul>
	* <li>the node belongs to a different AST</li>
	* <li>the node already has a parent</li>
	* </ul>
	*/
	public void setType(Type type) {
	if (type == null) {
	throw new IllegalArgumentException();
	}
	ASTNode oldChild = this.type;
	preReplaceChild(oldChild, type, TYPE_PROPERTY);
	this.type = type;
	postReplaceChild(oldChild, type, TYPE_PROPERTY);
	}

	/**
	* Returns whether this declaration declares the last parameter of
	* a variable arity method (added in JLS3 API).
	* <p>
	* Note that the binding for the type <code>Foo</code> in the vararg method
	* declaration <code>void fun(Foo... args)</code> is always for the type as
	* written; i.e., the type binding for <code>Foo</code>. However, if you
	* navigate from the method declaration to its method binding to the
	* type binding for its last parameter, the type binding for the vararg
	* parameter is always an array type (i.e., <code>Foo[]</code>) reflecting
	* the way vararg methods get compiled.
	* </p>
	* <p>
	* WARNING: For array-typed varargs, the {@link Type#resolveBinding() binding}
	* of the variable's {@link #getType() type} is not useful, since it represents
	* an unused type. It misses the last (innermost) dimension that carries the
	* {@link #varargsAnnotations()}.
	* </p>
	*
	* @return <code>true</code> if this is a variable arity parameter declaration,
	* and <code>false</code> otherwise
	* @exception UnsupportedOperationException if this operation is used in
	* a JLS2 AST
	* @since 3.1
	*/
	public boolean isVarargs() {
	// more efficient than just calling unsupportedIn2() to check
	if (this.modifiers == null) {
	unsupportedIn2();
	}
	return this.variableArity;
	}

	/**
	* Sets whether this declaration declares the last parameter of
	* a variable arity method (added in JLS3 API).
	*
	* @param variableArity <code>true</code> if this is a variable arity
	* parameter declaration, and <code>false</code> otherwise
	* @since 3.1
	*/
	public void setVarargs(boolean variableArity) {
	// more efficient than just calling unsupportedIn2() to check
	if (this.modifiers == null) {
	unsupportedIn2();
	}
	preValueChange(VARARGS_PROPERTY);
	this.variableArity = variableArity;
	postValueChange(VARARGS_PROPERTY);
	}

	/**
	* Returns the ordered list of annotations on the varargs token (added in JLS8 API).
	* <p>
	* WARNING: For array-typed varargs, the {@link Type#resolveBinding() binding}
	* of the variable's {@link #getType() type} is not useful, since it represents
	* an unused type. It misses the last (innermost) dimension that carries the
	* returned {@code varargsAnnotations}.
	* </p>
	*
	* @return the list of annotations on the varargs token (element type: {@link Annotation})
	* @exception UnsupportedOperationException if this operation is used
	* in a JLS2, JLS3 or JLS4 AST
	* @see #isVarargs()
	* @since 3.10
	*/
	public List varargsAnnotations() {
	if (this.varargsAnnotations == null) {
	unsupportedIn2_3_4();
	}
	return this.varargsAnnotations;
	}

	@Override
	int memSize() {
	// treat Operator as free
	return BASE_NODE_SIZE + 9 * 4;
	}

	@Override
	int treeSize() {
	return
	memSize()
	+ (this.modifiers == null ? 0 : this.modifiers.listSize())
	+ (this.type == null ? 0 : getType().treeSize())
	+ (this.varargsAnnotations == null ? 0 : this.varargsAnnotations.listSize())
	+ (this.variableName == null ? 0 : getName().treeSize())
	+ (this.extraDimensions == null ? 0 : this.extraDimensions.listSize())
	+ (this.optionalInitializer == null ? 0 : getInitializer().treeSize());
	}
	}