/******************************************************************************* | |
* Copyright (c) 2001 International Business Machines Corp. and others. | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Common Public License v0.5 | |
* which accompanies this distribution, and is available at | |
* http://www.eclipse.org/legal/cpl-v05.html | |
* | |
* Contributors: | |
* IBM Corporation - initial API and implementation | |
******************************************************************************/ | |
package org.eclipse.jdt.core.dom; | |
import org.eclipse.jdt.core.compiler.*; | |
import org.eclipse.jdt.core.compiler.InvalidInputException; | |
import org.eclipse.jdt.internal.compiler.parser.Scanner; | |
/** | |
* Number literal nodes. | |
* | |
* @since 2.0 | |
*/ | |
public class NumberLiteral extends Expression { | |
/** | |
* 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. | |
*/ | |
public int getNodeType() { | |
return NUMBER_LITERAL; | |
} | |
/* (omit javadoc for this method) | |
* Method declared on ASTNode. | |
*/ | |
ASTNode clone(AST target) { | |
NumberLiteral result = new NumberLiteral(target); | |
result.setToken(getToken()); | |
return result; | |
} | |
/* (omit javadoc for this method) | |
* Method declared on ASTNode. | |
*/ | |
public boolean subtreeMatch(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) { | |
boolean visitChildren = 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 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) { | |
if (token == null || token.length() == 0) { | |
throw new IllegalArgumentException(); | |
} | |
Scanner scanner = getAST().scanner; | |
char[] source = token.toCharArray(); | |
scanner.setSource(source); | |
scanner.resetTo(0, source.length); | |
try { | |
int tokenType = scanner.getNextToken(); | |
switch(tokenType) { | |
case Scanner.TokenNameDoubleLiteral: | |
case Scanner.TokenNameIntegerLiteral: | |
case Scanner.TokenNameFloatingPointLiteral: | |
case Scanner.TokenNameLongLiteral: | |
break; | |
case Scanner.TokenNameMINUS : | |
tokenType = scanner.getNextToken(); | |
switch(tokenType) { | |
case Scanner.TokenNameDoubleLiteral: | |
case Scanner.TokenNameIntegerLiteral: | |
case Scanner.TokenNameFloatingPointLiteral: | |
case Scanner.TokenNameLongLiteral: | |
break; | |
default: | |
throw new IllegalArgumentException(); | |
} | |
break; | |
default: | |
throw new IllegalArgumentException(); | |
} | |
} catch(InvalidInputException e) { | |
throw new IllegalArgumentException(); | |
} | |
modifying(); | |
this.tokenValue = token; | |
} | |
/* (omit javadoc for this method) | |
* Method declared on ASTNode. | |
*/ | |
int memSize() { | |
int size = BASE_NODE_SIZE + 1 * 4; | |
if (tokenValue != null) { | |
size += HEADERS + 2 * 4 + HEADERS + 2 * tokenValue.length(); | |
} | |
return size; | |
} | |
/* (omit javadoc for this method) | |
* Method declared on ASTNode. | |
*/ | |
int treeSize() { | |
return memSize(); | |
} | |
} |