Switch.cs

Go to the documentation of this file.

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Martin Hentschel <info@cl-soft.de>
 *
 */

using System;
using System.Collections.Generic;

namespace CCodeGeneration
{
    public class SwitchCase : CodeContainerBase
    {
        public string Value { get; set; }

        public SwitchCase()
        {
        }

        public SwitchCase(string value)
        {
            this.Value = value;
        }

        public bool IsDefault
        {
            get { return (this.Value.ToLowerInvariant() == "default"); }
        }

        public static SwitchCase GenerateDefault()
        {
            return new SwitchCase("default");
        }

        public override void GenerateCode(int level, CGenerator generator)
        {
            if (!String.IsNullOrWhiteSpace(this.Value))
            {
                generator.IndentLine(level);
                if (this.IsDefault)
                {
                    generator.OutputStream.Write("default:");
                }
                else
                {
                    generator.OutputStream.Write(String.Format("case {0}:", this.Value));
                }
                generator.WriteNewLine();
                generator.IndentLine(level + 1);
                generator.OutputStream.Write("{");
                generator.WriteNewLine();

                base.GenerateCode(level + 1, generator);

                generator.IndentLine(level + 1);
                generator.OutputStream.Write("}");
                generator.WriteNewLine();

                generator.IndentLine(level + 1);
                generator.OutputStream.Write("break;");
                generator.WriteNewLine();
            }
        }
    }

    public class Switch: CodeElement
    {
        public string SwitchVar { get; set; }

        private List<SwitchCase> switches = new List<SwitchCase>();

        public Switch()
        {
        }

        public Switch(string switchVar)
        {
            this.SwitchVar = switchVar;
        }

        public List<SwitchCase> Switches
        {
            get { return this.switches; }
        }

        public override void GenerateCode(int level, CGenerator generator)
        {
            if (!String.IsNullOrWhiteSpace(this.SwitchVar))
            {
                generator.IndentLine(level);
                generator.OutputStream.Write(String.Format("switch ({0})", this.SwitchVar));
                generator.WriteNewLine();
                generator.IndentLine(level);
                generator.OutputStream.Write("{");
                generator.WriteNewLine();

                SwitchCase defaultCase = null; // generate 'default' always as last case
                foreach (SwitchCase switchCase in this.switches)
                {
                    if (switchCase.IsDefault)
                    {
                        defaultCase = switchCase;
                    }
                    else
                    {
                        switchCase.GenerateCode(level + 1, generator);
                    }
                }
                if (defaultCase != null)
                {
                    defaultCase.GenerateCode(level + 1, generator);
                }

                generator.IndentLine(level);
                generator.OutputStream.Write("}");
                generator.WriteNewLine();
            }
        }
    }
}