org.xpect.util.IssueVisualizer.java Source code

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Here is the source code for org.xpect.util.IssueVisualizer.java

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/*******************************************************************************
 * Copyright (c) 2012 itemis AG (http://www.itemis.eu) 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
 *******************************************************************************/
package org.xpect.util;

import java.util.Collection;
import java.util.List;
import java.util.Set;

import org.eclipse.xtext.validation.Issue;
import org.xpect.text.Text;

import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;

/**
 * @author Moritz Eysholdt - Initial contribution and API
 */
public class IssueVisualizer {
    protected String issueToString(Issue issue) {
        StringBuffer result = new StringBuffer();
        result.append(issue.getSeverity().toString().toLowerCase());
        result.append(" - ");
        result.append(new Text(issue.getMessage()).escapeNewLines());
        return result.toString();
    }

    public String visualize(String documentString, Collection<Issue> issues) {
        Text document = new Text(documentString);
        @SuppressWarnings("unchecked")
        List<Issue>[] mapped = new List[document.length()];
        List<Issue> unmapped = Lists.newArrayList();
        for (Issue issue : issues) {
            if (issue.getOffset() != null && issue.getLength() != null && issue.getOffset() >= 0
                    && issue.getOffset() < document.length() && issue.getLength() > 0) {
                int max = Math.min(issue.getOffset() + issue.getLength(), document.length());
                for (int i = issue.getOffset(); i < max; i++) {
                    if (mapped[i] == null)
                        mapped[i] = Lists.newArrayList(issue);
                    else
                        mapped[i].add(issue);
                }
            } else
                unmapped.add(issue);
        }
        StringBuffer result = new StringBuffer();
        for (Issue issue : unmapped) {
            if (result.length() > 0)
                result.append(document.getNL());
            result.append(issueToString(issue));
        }
        boolean first = true;
        int offset = 0;
        for (String line : document.splitIntoLines()) {
            if (first)
                first = false;
            else
                result.append(document.getNL());
            result.append(line);
            boolean lineHasIssue = false;
            for (int i = offset; i < offset + line.length(); i++)
                if (mapped[i] != null)
                    lineHasIssue = true;
            if (lineHasIssue) {
                result.append(document.getNL());
                Set<Issue> lineIssues = Sets.newLinkedHashSet();
                for (int i = offset; i < offset + line.length(); i++)
                    if (mapped[i] != null) {
                        int mark = 0;
                        lineIssues.addAll(mapped[i]);
                        for (Issue issue : mapped[i])
                            mark += 1 << Iterables.indexOf(lineIssues, Predicates.equalTo(issue));
                        result.append(Integer.toHexString(mark));
                    } else
                        result.append(document.charAt(i) == '\t' ? "\t" : " ");
                for (Issue issue : lineIssues) {
                    int id = 1 << Iterables.indexOf(lineIssues, Predicates.equalTo(issue));
                    result.append(document.getNL());
                    result.append(id);
                    result.append(": ");
                    result.append(issueToString(issue));
                }
            }
            offset += line.length() + document.currentLineEndLenght(offset);
        }
        return result.toString();
    }

}