langtools/src/share/classes/com/sun/tools/javac/util/RawDiagnosticFormatter.java

/*
 * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
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package com.sun.tools.javac.util;

import java.util.Collection;
import java.util.EnumSet;
import java.util.Locale;
import javax.tools.JavaFileObject;

import com.sun.tools.javac.api.DiagnosticFormatter.Configuration.*;
import com.sun.tools.javac.api.Formattable;
import com.sun.tools.javac.file.BaseFileObject;
import com.sun.tools.javac.tree.JCTree.*;
import com.sun.tools.javac.util.AbstractDiagnosticFormatter.SimpleConfiguration;

import static com.sun.tools.javac.api.DiagnosticFormatter.PositionKind.*;

/**
 * A raw formatter for diagnostic messages.
 * The raw formatter will format a diagnostic according to one of two format patterns, depending on whether
 * or not the source name and position are set. This formatter provides a standardized, localize-independent
 * implementation of a diagnostic formatter; as such, this formatter is best suited for testing purposes.
 *
 * <p><b>This is NOT part of any supported API.
 * If you write code that depends on this, you do so at your own risk.
 * This code and its internal interfaces are subject to change or
 * deletion without notice.</b>
 */
public final class RawDiagnosticFormatter extends AbstractDiagnosticFormatter {

    /**
     * Create a formatter based on the supplied options.
     * @param options
     */
    public RawDiagnosticFormatter(Options options) {
        super(null, new SimpleConfiguration(options,
                EnumSet.of(DiagnosticPart.SUMMARY,
                        DiagnosticPart.DETAILS,
                        DiagnosticPart.SUBDIAGNOSTICS)));
    }

    //provide common default formats
    public String formatDiagnostic(JCDiagnostic d, Locale l) {
        try {
            StringBuilder buf = new StringBuilder();
            if (d.getPosition() != Position.NOPOS) {
                buf.append(formatSource(d, false, null));
                buf.append(':');
                buf.append(formatPosition(d, LINE, null));
                buf.append(':');
                buf.append(formatPosition(d, COLUMN, null));
                buf.append(':');
            }
            else if (d.getSource() != null && d.getSource().getKind() == JavaFileObject.Kind.CLASS) {
                buf.append(formatSource(d, false, null));
                buf.append(":-:-:");
            }
            else
                buf.append('-');
            buf.append(' ');
            buf.append(formatMessage(d, null));
            if (displaySource(d)) {
                buf.append("\n");
                buf.append(formatSourceLine(d, 0));
            }
            return buf.toString();
        }
        catch (Exception e) {
            //e.printStackTrace();
            return null;
        }
    }

    public String formatMessage(JCDiagnostic d, Locale l) {
        StringBuilder buf = new StringBuilder();
        Collection<String> args = formatArguments(d, l);
        buf.append(localize(null, d.getCode(), args.toArray()));
        if (d.isMultiline() && getConfiguration().getVisible().contains(DiagnosticPart.SUBDIAGNOSTICS)) {
            List<String> subDiags = formatSubdiagnostics(d, null);
            if (subDiags.nonEmpty()) {
                String sep = "";
                buf.append(",{");
                for (String sub : formatSubdiagnostics(d, null)) {
                    buf.append(sep);
                    buf.append("(");
                    buf.append(sub);
                    buf.append(")");
                    sep = ",";
                }
                buf.append('}');
            }
        }
        return buf.toString();
    }

    @Override
    protected String formatArgument(JCDiagnostic diag, Object arg, Locale l) {
        String s;
        if (arg instanceof Formattable) {
            s = arg.toString();
        } else if (arg instanceof JCExpression) {
            JCExpression tree = (JCExpression)arg;
            s = "@" + tree.getStartPosition();
        } else if (arg instanceof BaseFileObject) {
            s = ((BaseFileObject) arg).getShortName();
        } else {
            s = super.formatArgument(diag, arg, null);
        }
        return (arg instanceof JCDiagnostic) ? "(" + s + ")" : s;
    }

    @Override
    protected String localize(Locale l, String key, Object... args) {
        StringBuilder buf = new StringBuilder();
        buf.append(key);
        String sep = ": ";
        for (Object o : args) {
            buf.append(sep);
            buf.append(o);
            sep = ", ";
        }
        return buf.toString();
    }

    @Override
    public boolean isRaw() {
        return true;
    }
}