Copyright (c) 2000, 2013 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
/*******************************************************************************
 * Copyright (c) 2000, 2013 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.List;

import org.eclipse.jdt.core.compiler.InvalidInputException;
import org.eclipse.jdt.internal.compiler.parser.Scanner;
import org.eclipse.jdt.internal.compiler.parser.TerminalTokens;

Number literal nodes.
Since:
2.0
@noinstantiate
This class is not intended to be instantiated by clients./**
 * Number literal nodes.
 *
 * @since 2.0
 * @noinstantiate This class is not intended to be instantiated by clients.
 */
@SuppressWarnings("rawtypes")
public class NumberLiteral extends Expression {

	
The "token" structural property of this node type (type: String). 
Since:
3.0/**
	 * The "token" structural property of this node type (type: {@link String}).
	 * @since 3.0
	 */
	public static final SimplePropertyDescriptor TOKEN_PROPERTY =
		new SimplePropertyDescriptor(NumberLiteral.class, "token", String.class, MANDATORY); //$NON-NLS-1$

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

	static {
		List propertyList = new ArrayList(2);
		createPropertyList(NumberLiteral.class, propertyList);
		addProperty(TOKEN_PROPERTY, propertyList);
		PROPERTY_DESCRIPTORS = reapPropertyList(propertyList);
	}

	
Returns a list of structural property descriptors for this node type.
Clients must not modify the result.
Params:
apiLevel – the API level; one of the
AST.JLS* constants
Returns:
a list of property descriptors (element type: StructuralPropertyDescriptor)
Since:
3.0/**
	 * 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) {
		return PROPERTY_DESCRIPTORS;
	}

	
The token string; defaults to the integer literal "0".
/**
	 * The token string; defaults to the integer literal "0".
	 */
	private String tokenValue = "0";//$NON-NLS-1$

	
Creates a new unparented number literal node owned by the given AST.
By default, the number literal is the token "0".

N.B. This constructor is package-private.

Params:
ast – the AST that is to own this node/**
	 * Creates a new unparented number literal node owned by the given AST.
	 * By default, the number literal is the token "<code>0</code>".
	 * <p>
	 * N.B. This constructor is package-private.
	 * </p>
	 *
	 * @param ast the AST that is to own this node
	 */
	NumberLiteral(AST ast) {
		super(ast);
	}

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

	@Override
	final Object internalGetSetObjectProperty(SimplePropertyDescriptor property, boolean get, Object value) {
		if (property == TOKEN_PROPERTY) {
			if (get) {
				return getToken();
			} else {
				setToken((String) value);
				return null;
			}
		}
		// allow default implementation to flag the error
		return super.internalGetSetObjectProperty(property, get, value);
	}

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

	@Override
	ASTNode clone0(AST target) {
		NumberLiteral result = new NumberLiteral(target);
		result.setSourceRange(getStartPosition(), getLength());
		result.setToken(getToken());
		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) {
		visitor.visit(this);
		visitor.endVisit(this);
	}

	
Returns the token of this number literal node. The value is the sequence
of characters that would appear in the source program.
Returns:
the numeric literal token/**
	 * Returns the token of this number literal node. The value is the sequence
	 * of characters that would appear in the source program.
	 *
	 * @return the numeric literal token
	 */
	public String getToken() {
		return this.tokenValue;
	}

	
Sets the token of this number literal node. The value is the sequence
of characters that would appear in the source program.
Params:
token – the numeric literal token
Throws:
IllegalArgumentException – if the argument is incorrect/**
	 * Sets the token of this number literal node. The value is the sequence
	 * of characters that would appear in the source program.
	 *
	 * @param token the numeric literal token
	 * @exception IllegalArgumentException if the argument is incorrect
	 */
	public void setToken(String token) {
		// update internalSetToken(String) if this is changed
		if (token == null || token.length() == 0) {
			throw new IllegalArgumentException();
		}
		Scanner scanner = this.ast.scanner;
		char[] source = token.toCharArray();
		scanner.setSource(source);
		scanner.resetTo(0, source.length);
		scanner.tokenizeComments = false;
		scanner.tokenizeWhiteSpace = false;
		try {
			int tokenType = scanner.getNextToken();
			switch(tokenType) {
				case TerminalTokens.TokenNameDoubleLiteral:
				case TerminalTokens.TokenNameIntegerLiteral:
				case TerminalTokens.TokenNameFloatingPointLiteral:
				case TerminalTokens.TokenNameLongLiteral:
					break;
				case TerminalTokens.TokenNameMINUS :
					tokenType = scanner.getNextToken();
					switch(tokenType) {
						case TerminalTokens.TokenNameDoubleLiteral:
						case TerminalTokens.TokenNameIntegerLiteral:
						case TerminalTokens.TokenNameFloatingPointLiteral:
						case TerminalTokens.TokenNameLongLiteral:
							break;
						default:
							throw new IllegalArgumentException("Invalid number literal : >" + token + "<"); //$NON-NLS-1$//$NON-NLS-2$
					}
					break;
				default:
					throw new IllegalArgumentException("Invalid number literal : >" + token + "<");//$NON-NLS-1$//$NON-NLS-2$
			}
		} catch(InvalidInputException e) {
			throw new IllegalArgumentException();
		} finally {
			scanner.tokenizeComments = true;
			scanner.tokenizeWhiteSpace = true;
		}
		preValueChange(TOKEN_PROPERTY);
		this.tokenValue = token;
		postValueChange(TOKEN_PROPERTY);
	}

	/* (omit javadoc for this method)
	 * This method is a copy of setToken(String) that doesn't do any validation.
	 */
	void internalSetToken(String token) {
		preValueChange(TOKEN_PROPERTY);
		this.tokenValue = token;
		postValueChange(TOKEN_PROPERTY);
	}

	@Override
	int memSize() {
		int size = BASE_NODE_SIZE + 1 * 4 + stringSize(this.tokenValue);
		return size;
	}

	@Override
	int treeSize() {
		return memSize();
	}
}