/******************************************************************************* | |
* Copyright (c) 2000, 2004 IBM Corporation and others. | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Common Public License v1.0 | |
* which accompanies this distribution, and is available at | |
* http://www.eclipse.org/legal/cpl-v10.html | |
* | |
* Contributors: | |
* IBM Corporation - initial API and implementation | |
*******************************************************************************/ | |
package org.eclipse.wst.jsdt.internal.compiler.ast; | |
import org.eclipse.wst.jsdt.internal.compiler.ASTVisitor; | |
import org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope; | |
/** | |
* Flatten string literal | |
*/ | |
public class StringLiteralConcatenation extends StringLiteral { | |
private static final int INITIAL_SIZE = 5; | |
public StringLiteral[] literals; | |
public int counter; | |
/** | |
* Build a two-strings literal | |
* */ | |
public StringLiteralConcatenation(StringLiteral str1, StringLiteral str2) { | |
super(str1.sourceStart, str1.sourceEnd); | |
this.source = str1.source; | |
this.literals = new StringLiteral[INITIAL_SIZE]; | |
this.counter = 0; | |
this.literals[this.counter++] = str1; | |
extendsWith(str2); | |
} | |
/** | |
* Add the lit source to mine, just as if it was mine | |
*/ | |
public StringLiteralConcatenation extendsWith(StringLiteral lit) { | |
this.sourceEnd = lit.sourceEnd; | |
final int literalsLength = this.literals.length; | |
if (this.counter == literalsLength) { | |
// resize | |
System.arraycopy(this.literals, 0, this.literals = new StringLiteral[literalsLength + INITIAL_SIZE], 0, literalsLength); | |
} | |
//uddate the source | |
int length = source.length; | |
System.arraycopy( | |
source, | |
0, | |
source = new char[length + lit.source.length], | |
0, | |
length); | |
System.arraycopy(lit.source, 0, source, length, lit.source.length); | |
this.literals[this.counter++] = lit; | |
return this; | |
} | |
public StringBuffer printExpression(int indent, StringBuffer output) { | |
output.append("StringLiteralConcatenation{"); //$NON-NLS-1$ | |
for (int i = 0, max = this.counter; i < max; i++) { | |
this.literals[i].printExpression(indent, output); | |
output.append("+\n");//$NON-NLS-1$ | |
} | |
return output.append('}'); | |
} | |
public char[] source() { | |
return source; | |
} | |
public void traverse(ASTVisitor visitor, BlockScope scope) { | |
if (visitor.visit(this, scope)) { | |
for (int i = 0, max = this.counter; i < max; i++) { | |
this.literals[i].traverse(visitor, scope); | |
} | |
} | |
visitor.endVisit(this, scope); | |
} | |
} |