/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* 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.
*/
public class NumberLiteral extends Expression {
/**
* The "token" structural property of this node type.
*
* @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: {@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.
*
* @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".
*/
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 "<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);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final List internalStructuralPropertiesForType(int apiLevel) {
return propertyDescriptors(apiLevel);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
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);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final int getNodeType0() {
return NUMBER_LITERAL;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
ASTNode clone0(AST target) {
NumberLiteral result= new NumberLiteral(target);
result.setSourceRange(getStartPosition(), getLength());
result.setToken(getToken());
return result;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
// dispatch to correct overloaded match method
return matcher.match(this, other);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
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.
*
* @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.
*
* @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);
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
int memSize() {
int size= BASE_NODE_SIZE + 1 * 4 + stringSize(this.tokenValue);
return size;
}
/* (omit javadoc for this method)
* Method declared on ASTNode.
*/
int treeSize() {
return memSize();
}
}