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StringLiteralConcatenation.java
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StringLiteralConcatenation.java
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/*******************************************************************************
* Copyright (c) 2000, 2024 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.internal.compiler.ast;
import org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
/**
* Flatten string literal
*/
public class StringLiteralConcatenation extends StringLiteral {
/**
* Build a two-strings literal
*/
public StringLiteralConcatenation(StringLiteral str1, StringLiteral lit) {
super(str1, lit, str1.sourceStart, lit.sourceEnd, str1.getLineNumber());
}
@Override
public StringBuilder printExpression(int indent, StringBuilder output) {
output.append("StringLiteralConcatenation{"); //$NON-NLS-1$
for (StringLiteral lit : getLiterals()) {
lit.printExpression(indent, output);
output.append("+\n");//$NON-NLS-1$
}
return output.append('}');
}
@Override
public void traverse(ASTVisitor visitor, BlockScope scope) {
if (visitor.visit(this, scope)) {
for (StringLiteral lit : getLiterals()) {
lit.traverse(visitor, scope);
}
}
visitor.endVisit(this, scope);
}
public StringLiteral[] getLiterals() {
int size = append(null, 0, this);
StringLiteral[] result = new StringLiteral[size];
append(result, 0, this);
return result;
}
private static int append(StringLiteral[] result, int length, StringLiteral o) {
do {
if (o.tail instanceof StringLiteral l) {
if (result != null) {
result[result.length - 1 - length] = l;
}
length += 1;
} else {
if (result != null) {
result[result.length - 1 - length] = o;
}
length += 1;
}
o = o.optionalHead;
} while (o != null);
return length;
}
@Override
protected void flatten(char[] result) {
// don't store flattened representation: getLiterals() still needs the linked list
}
@Override
public void setSource(char[] source) {
throw new UnsupportedOperationException();
}
}