| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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 { |
| private static final int INITIAL_SIZE = 5; |
| public Expression[] 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 |
| */ |
| @Override |
| 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 = this.source.length; |
| System.arraycopy( |
| this.source, |
| 0, |
| this.source = new char[length + lit.source.length], |
| 0, |
| length); |
| System.arraycopy(lit.source, 0, this.source, length, lit.source.length); |
| this.literals[this.counter++] = lit; |
| return this; |
| } |
| |
| @Override |
| 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('}'); |
| } |
| |
| @Override |
| public char[] source() { |
| return this.source; |
| } |
| |
| @Override |
| 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); |
| } |
| } |