Package org.jruby.common

Source Code of org.jruby.common.RubyWarnings

/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
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* the provisions above, a recipient may use your version of this file under
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package org.jruby.common;

import org.jruby.Ruby;
import org.jruby.lexer.yacc.ISourcePosition;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;

/**
*
*/
public class RubyWarnings implements IRubyWarnings {
    private final Ruby runtime;

    public RubyWarnings(Ruby runtime) {
        this.runtime = runtime;
    }

    /**
     * Prints a warning, unless $VERBOSE is nil.
     */
    public void warn(ID id, ISourcePosition position, String message, Object... data) {
        warn(id, position.getFile(), position.getEndLine(), message, data);
    }

    /**
     * Prints a warning, unless $VERBOSE is nil.
     */
    public void warn(ID id, String fileName, int lineNumber, String message, Object... data) {
        if (runtime.getVerbose().isNil()) return;
     
        StringBuilder buffer = new StringBuilder(100);

        buffer.append(fileName).append(':').append(lineNumber + 1).append(' ');
        buffer.append("warning: ").append(message).append('\n');
        IRubyObject errorStream = runtime.getGlobalVariables().get("$stderr");
        errorStream.callMethod(runtime.getCurrentContext(), "write", runtime.newString(buffer.toString()));
    }

    public boolean isVerbose() {
        return runtime.getVerbose().isTrue();
    }

    public void warn(ID id, String message, Object... data) {
        ThreadContext context = runtime.getCurrentContext();
       
        warn(id, context.getFile(), context.getLine(), message, data);
    }

    public void warning(ID id, String message, Object... data) {
        ThreadContext context = runtime.getCurrentContext();

        warning(id, context.getFile(), context.getLine(), message, data);
    }
   
    /**
     * Prints a warning, only in verbose mode.
     */
    public void warning(ID id, ISourcePosition position, String message, Object... data) {
        warning(id, position.getFile(), position.getEndLine(), message, data);
    }

    /**
     * Prints a warning, only in verbose mode.
     */
    public void warning(ID id, String fileName, int lineNumber, String message, Object... data) {
        if (isVerbose()) warn(id, fileName, lineNumber, message, data);
    }
}
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