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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 CONTRIBUTORS 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.
*/
using System;
using System.Collections.Generic;
using Tools;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL
{
public class LSL2CSCodeTransformer
{
private SYMBOL m_astRoot = null;
private static Dictionary<string, string> m_datatypeLSL2OpenSim = new Dictionary<string, string>();
/// <summary>
/// Pass the new CodeTranformer an abstract syntax tree.
/// </summary>
/// <param name="astRoot">The root node of the AST.</param>
public LSL2CSCodeTransformer(SYMBOL astRoot)
{
m_astRoot = astRoot;
// let's populate the dictionary
try
{
m_datatypeLSL2OpenSim.Add("integer", "LSL_Types.LSLInteger");
m_datatypeLSL2OpenSim.Add("float", "LSL_Types.LSLFloat");
//m_datatypeLSL2OpenSim.Add("key", "LSL_Types.key"); // key doesn't seem to be used
m_datatypeLSL2OpenSim.Add("key", "LSL_Types.LSLString");
m_datatypeLSL2OpenSim.Add("string", "LSL_Types.LSLString");
m_datatypeLSL2OpenSim.Add("vector", "LSL_Types.Vector3");
m_datatypeLSL2OpenSim.Add("rotation", "LSL_Types.Quaternion");
m_datatypeLSL2OpenSim.Add("list", "LSL_Types.list");
}
catch
{
// temporary workaround since we are adding to a static datatype
}
}
/// <summary>
/// Transform the code in the AST we have.
/// </summary>
/// <returns>The root node of the transformed AST</returns>
public SYMBOL Transform()
{
foreach (SYMBOL s in m_astRoot.kids)
TransformNode(s);
return m_astRoot;
}
/// <summary>
/// Recursively called to transform each type of node. Will transform this
/// node, then all it's children.
/// </summary>
/// <param name="s">The current node to transform.</param>
private void TransformNode(SYMBOL s)
{
// make sure to put type lower in the inheritance hierarchy first
// ie: since IdentConstant and StringConstant inherit from Constant,
// put IdentConstant and StringConstant before Constant
if (s is Declaration)
((Declaration) s).Datatype = m_datatypeLSL2OpenSim[((Declaration) s).Datatype];
else if (s is Constant)
((Constant) s).Type = m_datatypeLSL2OpenSim[((Constant) s).Type];
else if (s is TypecastExpression)
((TypecastExpression) s).TypecastType = m_datatypeLSL2OpenSim[((TypecastExpression) s).TypecastType];
else if (s is GlobalFunctionDefinition && "void" != ((GlobalFunctionDefinition) s).ReturnType) // we don't need to translate "void"
((GlobalFunctionDefinition) s).ReturnType = m_datatypeLSL2OpenSim[((GlobalFunctionDefinition) s).ReturnType];
foreach (SYMBOL kid in s.kids)
TransformNode(kid);
}
}
}
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