| /* |
| * <copyright> |
| * |
| * Copyright (c) 2005-2006 Sven Efftinge 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: |
| * Sven Efftinge - Initial API and implementation |
| * |
| * </copyright> |
| */ |
| package org.eclipse.gmf.internal.xpand.ast; |
| |
| import java.util.Set; |
| |
| import org.eclipse.gmf.internal.xpand.expression.AnalysationIssue; |
| import org.eclipse.gmf.internal.xpand.expression.EvaluationException; |
| import org.eclipse.gmf.internal.xpand.expression.ast.Expression; |
| import org.eclipse.gmf.internal.xpand.model.ProtectedRegion; |
| import org.eclipse.gmf.internal.xpand.model.ProtectedRegionSyntaxException; |
| import org.eclipse.gmf.internal.xpand.model.XpandExecutionContext; |
| |
| /** |
| * @author Sven Efftinge |
| */ |
| public class ProtectStatement extends Statement { |
| |
| private final Expression commentStart; |
| |
| private final Expression commentEnd; |
| |
| private final Statement[] body; |
| |
| private final Expression id; |
| |
| private final boolean disable; |
| |
| public ProtectStatement(final int start, final int end, final int line, final int startOffset, final int endOffset, final Expression commentStart, |
| final Expression commentEnd, final Statement[] body, final Expression id, final boolean disable) { |
| super(start, end, line, startOffset, endOffset); |
| this.commentStart = commentStart; |
| this.commentEnd = commentEnd; |
| this.body = body; |
| this.id = id; |
| this.disable = disable; |
| } |
| |
| public Statement[] getBody() { |
| return body; |
| } |
| |
| public Expression getCommentEnd() { |
| return commentEnd; |
| } |
| |
| public Expression getCommentStart() { |
| return commentStart; |
| } |
| |
| public Expression getId() { |
| return id; |
| } |
| |
| public void analyze(final XpandExecutionContext ctx, final Set<AnalysationIssue> issues) { |
| getCommentStart().analyze(ctx, issues); |
| getCommentEnd().analyze(ctx, issues); |
| getId().analyze(ctx, issues); |
| |
| for (int i = 0; i < getBody().length; i++) { |
| getBody()[i].analyze(ctx, issues); |
| } |
| } |
| |
| @Override |
| public void evaluateInternal(final XpandExecutionContext ctx) { |
| final String cStart = nullSave(getCommentStart().evaluate(ctx)); |
| if (cStart == null) { |
| throw new EvaluationException("NullEvaluation!", getCommentStart()); |
| } |
| final String cEnd = nullSave(getCommentEnd().evaluate(ctx)); |
| if (cEnd == null) { |
| throw new EvaluationException("NullEvaluation!", getCommentEnd()); |
| } |
| final String id = nullSave(getId().evaluate(ctx)); |
| if (id == null) { |
| throw new EvaluationException("NullEvaluation!", getId()); |
| } |
| |
| ProtectedRegion region = null; |
| if (ctx.getProtectedRegionResolver() != null) { |
| region = ctx.getProtectedRegionResolver().getProtectedRegion(id.toString()); |
| } else { |
| throw new RuntimeException("No protected region resolver configured!"); |
| } |
| |
| if (region == null) { |
| region = ctx.getProtectedRegionResolver().createProtectedRegion(id, disable); |
| ctx.getOutput().write(region.getStartString(cStart, cEnd)); |
| for (int i = 0; i < getBody().length; i++) { |
| getBody()[i].evaluate(ctx); |
| } |
| ctx.getOutput().write(region.getEndString(cStart, cEnd)); |
| } else { |
| ctx.getOutput().write(region.getStartString(cStart, cEnd)); |
| try { |
| ctx.getOutput().write(region.getBody(cStart, cEnd)); |
| } catch (final ProtectedRegionSyntaxException e) { |
| throw new EvaluationException(e.getMessage(), getId()); |
| } |
| ctx.getOutput().write(region.getEndString(cStart, cEnd)); |
| } |
| |
| } |
| |
| private String nullSave(final Object string) { |
| return string != null ? string.toString() : ""; |
| } |
| |
| } |