/***** 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) 2010 Charles O Nutter <headius@headius.com>
 *
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 * 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"),
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package org.jruby.ext.psych;

import org.jruby.Ruby;
import org.jruby.RubyClass;
import org.jruby.RubyModule;
import org.jruby.RubyObject;
import org.jruby.anno.JRubyMethod;
import org.jruby.exceptions.RaiseException;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import static org.jruby.runtime.Visibility.*;

public class PsychToRuby {
    public static void initPsychToRuby(Ruby runtime, RubyModule psych) {
        RubyModule visitors = runtime.defineModuleUnder("Visitors", psych);
        RubyClass visitor = runtime.defineClassUnder("Visitor", runtime.getObject(), runtime.getObject().getAllocator(), visitors);
        RubyClass psychToRuby = runtime.defineClassUnder("ToRuby", visitor, RubyObject.OBJECT_ALLOCATOR, visitors);

        psychToRuby.defineAnnotatedMethods(PsychToRuby.class);
    }

    @JRubyMethod(visibility = PRIVATE)
    public static IRubyObject build_exception(ThreadContext context, IRubyObject self, IRubyObject klass, IRubyObject message) {
        if (klass instanceof RubyClass) {
            IRubyObject exception = ((RubyClass)klass).allocate();
            exception.getInternalVariables().setInternalVariable("mesg", message);
            return exception;
        } else {
            throw context.runtime.newTypeError(klass, context.runtime.getClassClass());
        }
    }

    @JRubyMethod(visibility = PRIVATE)
    public static IRubyObject path2class(ThreadContext context, IRubyObject self, IRubyObject path) {
        try {
            return context.runtime.getClassFromPath(path.asJavaString());
        } catch (RaiseException re) {
            if (re.getException().getMetaClass() == context.runtime.getNameError()) {
                throw context.runtime.newArgumentError("undefined class/module " + path);
            }
            throw re;
        }
    }
}
