Function.cs

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/*
 * 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 Function: CodeContainerBase
    {
        public string Name { get; set; }
        public bool IsStatic { get; set; }

        private readonly List<VariableType> parameter = new List<VariableType>();
        private VariableType returnType = VariableType.Void;

        public Function()
        {
        }

        public Function(string name, bool isStatic = false)
        {
            this.Name = name;
            this.IsStatic = isStatic;
        }

        public List<VariableType> Parameter
        {
            get { return this.parameter; }
        }

        public VariableType ReturnType
        {
            get { return this.returnType; }
            set
            {
                if (value == null)
                {
                    throw new ArgumentNullException("ReturnValue");
                }
                this.returnType = value;
            }
        }

        public static Function FromDeclaration(FunctionDeclaration decl)
        {
            Function result = new Function(decl.Name, decl.IsStatic);
            result.ReturnType = decl.ReturnType.Clone() as VariableType;

            foreach (VariableType param in decl.Parameter)
            {
                result.parameter.Add(param.Clone() as VariableType);
            }

            return result;
        }

        public override void GenerateCode(int level, CGenerator generator)
        {
            generator.IndentLine(level);

            if (this.IsStatic)
            {
                generator.OutputStream.Write("static ");
            }

            this.returnType.GenerateCode(generator);
            generator.OutputStream.Write(" " + this.Name + "(");

            if (this.Parameter.Count > 0)
            {
                for (int i = 0; i < this.parameter.Count; i++)
                {
                    this.parameter[i].GenerateCode(generator);

                    if (i < (this.parameter.Count - 1))
                    {
                        generator.OutputStream.Write(", ");
                    }
                }
            }
            else
            {
                generator.OutputStream.Write("void");
            }

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

            base.GenerateCode(level, generator);

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