/*
 * Copyright (c) 2008, 2015, 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.
 */

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.PathFileObject;
import com.sun.tools.javac.tree.JCTree.*;

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.
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.
/**
 * 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 {

    
The raw diagnostic helper.
/**
     * The raw diagnostic helper.
     */
    RawDiagnosticPosHelper rawDiagnosticPosHelper;

    
Helper class to generate stable positions for AST nodes occurring in diagnostic arguments.
If the AST node appears in the same line number as the main diagnostic, the line is information is omitted.
Otherwise both line and column information is included, using the format @{code line:col}".
Note: since subdiagnostics can be created without a diagnostic source, a position helper
should always refer to the toplevel diagnostic source.
/**
     * Helper class to generate stable positions for AST nodes occurring in diagnostic arguments.
     * If the AST node appears in the same line number as the main diagnostic, the line is information is omitted.
     * Otherwise both line and column information is included, using the format @{code line:col}".
     *
     * Note: since subdiagnostics can be created without a diagnostic source, a position helper
     * should always refer to the toplevel diagnostic source.
     */
    static class RawDiagnosticPosHelper {
        private final JCDiagnostic diag;

        RawDiagnosticPosHelper(JCDiagnostic diag) {
            this.diag = diag;
        }

        String getPosition(JCExpression exp) {
            DiagnosticSource diagSource = diag.getDiagnosticSource();
            long diagLine = diag.getLineNumber();
            long expLine = diagSource.getLineNumber(exp.pos);
            long expCol = diagSource.getColumnNumber(exp.pos, false);
            return (expLine == diagLine) ?
                    String.valueOf(expCol) :
                    expLine + ":" + expCol;
        }
    }

    
Create a formatter based on the supplied options.
Params:
options – /**
     * 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 {
            rawDiagnosticPosHelper = new RawDiagnosticPosHelper(d);
            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) {
            return null;
        } finally {
            rawDiagnosticPosHelper = 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) {
            Assert.checkNonNull(rawDiagnosticPosHelper);
            s = "@" + rawDiagnosticPosHelper.getPosition((JCExpression)arg);
        } else if (arg instanceof PathFileObject) {
            s = ((PathFileObject) arg).getShortName();
        } else if (arg instanceof Tag) {
            s = "compiler.misc.tree.tag." + StringUtils.toLowerCase(((Tag) arg).name());
        } 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;
    }
}