364 lines
17 KiB
C#
364 lines
17 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSim Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS AS IS AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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using System;
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using System.Collections.Generic;
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using System.Text.RegularExpressions;
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namespace OpenSim.Region.ScriptEngine.XEngine
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{
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public class LSL2CSConverter
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{
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// Uses regex to convert LSL code to C# code.
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//private Regex rnw = new Regex(@"[a-zA-Z0-9_\-]", RegexOptions.Compiled);
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private Dictionary<string, string> dataTypes = new Dictionary<string, string>();
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private Dictionary<string, string> quotes = new Dictionary<string, string>();
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// c Style
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private Regex cstylecomments = new Regex(@"/\*(.|[\r\n])*?\*/", RegexOptions.Compiled | RegexOptions.Multiline);
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// c# one liners
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private Regex nonCommentFwsl = new Regex("\"[a-zA-Z0-9.,:/\\n ]+//[^\"+]+([\\\\\\\"+]+)?(\\s+)?[\"+](\\s+)?(;)?", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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private Regex conelinecomments = new Regex(@"[^:].?([\/]{2}[^\n]*)|([\n]{1,}[\/]{2}[^\n]*)", RegexOptions.Compiled | RegexOptions.Multiline);
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// ([^\"])((?:[a-zA-Z])\.[a-zA-Z].?)([^\"])
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// value we're looking for: (?:[a-zA-Z])\.[a-zA-Z]
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public LSL2CSConverter()
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{
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// Only the types we need to convert
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dataTypes.Add("void", "void");
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dataTypes.Add("integer", "LSL_Types.LSLInteger");
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dataTypes.Add("float", "double");
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dataTypes.Add("string", "LSL_Types.LSLString");
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dataTypes.Add("key", "LSL_Types.LSLString");
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dataTypes.Add("vector", "LSL_Types.Vector3");
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dataTypes.Add("rotation", "LSL_Types.Quaternion");
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dataTypes.Add("list", "LSL_Types.list");
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dataTypes.Add("null", "null");
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}
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public string Convert(string Script)
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{
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quotes.Clear();
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string Return = String.Empty;
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Script = " \r\n" + Script;
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//
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// Prepare script for processing
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//
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// Clean up linebreaks
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Script = Regex.Replace(Script, @"\r\n", "\n");
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Script = Regex.Replace(Script, @"\n", "\r\n");
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// QUOTE REPLACEMENT
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// temporarily replace quotes so we can work our magic on the script without
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// always considering if we are inside our outside quotes's
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// TODO: Does this work on half-quotes in strings? ;)
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string _Script = String.Empty;
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string C;
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bool in_quote = false;
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bool quote_replaced = false;
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string quote_replacement_string = "Q_U_O_T_E_REPLACEMENT_";
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string quote = String.Empty;
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bool last_was_escape = false;
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int quote_replaced_count = 0;
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string removefwnoncomments = nonCommentFwsl.Replace(Script, "\"\";");
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string removecomments = conelinecomments.Replace(removefwnoncomments, "");
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removecomments = cstylecomments.Replace(removecomments, "");
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string[] localscript = removecomments.Split('"');
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string checkscript = String.Empty;
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bool flip = true;
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for (int p = 0; p < localscript.Length; p++)
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{
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//if (localscript[p].Length >= 1)
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//{
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if (!localscript[p].EndsWith(@"\"))
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{
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flip = !flip;
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//System.Console.WriteLine("Flip:" + flip.ToString() + " - " + localscript[p] + " ! " + localscript[p].EndsWith(@"\").ToString());
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}
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//}
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//else
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//{
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// flip = !flip;
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// System.Console.WriteLine("Flip:" + flip.ToString() + " - " + localscript[p]);
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//}
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if (!flip)
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checkscript += localscript[p];
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}
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//System.Console.WriteLine("SCRIPT:" + checkscript);
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// checks for alpha.alpha way of referring to objects in C#
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// ignores alpha.x alpha.y, alpha.z for refering to vector components
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Match SecurityM;
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// BROKEN: this check is very wrong. It block's any url in strings.
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SecurityM = Regex.Match(checkscript, @"(?:[a-zA-Z])\.(?:[a-wA-Z]|[a-zA-Z][a-zA-Z])", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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if (SecurityM.Success)
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throw new Exception("CS0103: 'The . symbol cannot be used in LSL except in float values or vector components'. Detected around: " + SecurityM.Captures[0].Value);
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SecurityM = Regex.Match(checkscript, @"typeof\s", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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if (SecurityM.Success)
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throw new Exception("CS0103: 'The object.typeof method isn't allowed in LSL'");
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SecurityM = Regex.Match(checkscript, @"GetType\(", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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if (SecurityM.Success)
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throw new Exception("CS0103: 'The object.GetType method isn't allowed in LSL'");
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for (int p = 0; p < Script.Length; p++)
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{
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C = Script.Substring(p, 1);
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while (true)
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{
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// found " and last was not \ so this is not an escaped \"
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if (C == "\"" && last_was_escape == false)
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{
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// Toggle inside/outside quote
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in_quote = !in_quote;
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if (in_quote)
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{
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quote_replaced_count++;
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}
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else
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{
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if (quote == String.Empty)
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{
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// We didn't replace quote, probably because of empty string?
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_Script += quote_replacement_string +
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quote_replaced_count.ToString().PadLeft(5, "0".ToCharArray()[0]);
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}
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// We just left a quote
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quotes.Add(
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quote_replacement_string +
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quote_replaced_count.ToString().PadLeft(5, "0".ToCharArray()[0]), quote);
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quote = String.Empty;
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}
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break;
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}
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if (!in_quote)
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{
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// We are not inside a quote
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quote_replaced = false;
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}
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else
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{
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// We are inside a quote
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if (!quote_replaced)
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{
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// Replace quote
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_Script += quote_replacement_string +
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quote_replaced_count.ToString().PadLeft(5, "0".ToCharArray()[0]);
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quote_replaced = true;
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}
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quote += C;
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break;
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}
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_Script += C;
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break;
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}
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last_was_escape = false;
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if (C == @"\")
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{
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last_was_escape = true;
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}
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}
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Script = _Script;
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//
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// END OF QUOTE REPLACEMENT
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//
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//
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// PROCESS STATES
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// Remove state definitions and add state names to start of each event within state
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//
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int ilevel = 0;
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int lastlevel = 0;
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string ret = String.Empty;
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string cache = String.Empty;
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bool in_state = false;
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string current_statename = String.Empty;
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for (int p = 0; p < Script.Length; p++)
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{
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C = Script.Substring(p, 1);
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while (true)
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{
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// inc / dec level
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if (C == @"{")
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ilevel++;
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if (C == @"}")
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ilevel--;
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if (ilevel < 0)
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ilevel = 0;
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cache += C;
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// if level == 0, add to return
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if (ilevel == 1 && lastlevel == 0)
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{
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// 0 => 1: Get last
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Match m =
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//Regex.Match(cache, @"(?![a-zA-Z_]+)\s*([a-zA-Z_]+)[^a-zA-Z_\(\)]*{",
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Regex.Match(cache, @"(?![a-zA-Z_]+)\s*(state\s+)?(?<statename>[a-zA-Z_][a-zA-Z_0-9]*)[^a-zA-Z_0-9\(\)]*{",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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in_state = false;
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if (m.Success)
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{
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// Go back to level 0, this is not a state
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in_state = true;
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current_statename = m.Groups["statename"].Captures[0].Value;
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//Console.WriteLine("Current statename: " + current_statename);
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cache =
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//@"(?<s1>(?![a-zA-Z_]+)\s*)" + @"([a-zA-Z_]+)(?<s2>[^a-zA-Z_\(\)]*){",
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Regex.Replace(cache,
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@"(?<s1>(?![a-zA-Z_]+)\s*)" + @"(state\s+)?([a-zA-Z_][a-zA-Z_0-9]*)(?<s2>[^a-zA-Z_0-9\(\)]*){",
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"${s1}${s2}",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase);
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}
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ret += cache;
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cache = String.Empty;
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}
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if (ilevel == 0 && lastlevel == 1)
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{
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// 1 => 0: Remove last }
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if (in_state == true)
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{
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cache = cache.Remove(cache.Length - 1, 1);
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//cache = Regex.Replace(cache, "}$", String.Empty, RegexOptions.Multiline | RegexOptions.Singleline);
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//Replace function names
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// void dataserver(key query_id, string data) {
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//cache = Regex.Replace(cache, @"([^a-zA-Z_]\s*)((?!if|switch|for)[a-zA-Z_]+\s*\([^\)]*\)[^{]*{)", "$1" + "<STATE>" + "$2", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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//Console.WriteLine("Replacing using statename: " + current_statename);
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cache =
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Regex.Replace(cache,
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@"^(\s*)((?!(if|switch|for|while)[^a-zA-Z0-9_])[a-zA-Z0-9_]*\s*\([^\)]*\)[^;]*\{)",
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@"$1public " + current_statename + "_event_$2",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase);
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}
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ret += cache;
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cache = String.Empty;
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in_state = true;
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current_statename = String.Empty;
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}
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break;
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}
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lastlevel = ilevel;
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}
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ret += cache;
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cache = String.Empty;
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Script = ret;
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ret = String.Empty;
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foreach (string key in dataTypes.Keys)
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{
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string val;
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dataTypes.TryGetValue(key, out val);
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// Replace CAST - (integer) with (int)
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Script =
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Regex.Replace(Script, @"\(" + key + @"\)", @"(" + val + ")",
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RegexOptions.Compiled | RegexOptions.Multiline);
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// Replace return types and function variables - integer a() and f(integer a, integer a)
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Script =
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Regex.Replace(Script, @"(^|;|}|[\(,])(\s*)" + key + @"(\s+)", @"$1$2" + val + "$3",
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RegexOptions.Compiled | RegexOptions.Multiline);
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Script =
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Regex.Replace(Script, @"(^|;|}|[\(,])(\s*)" + key + @"(\s*)[,]", @"$1$2" + val + "$3,",
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RegexOptions.Compiled | RegexOptions.Multiline);
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}
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// Add "void" in front of functions that needs it
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Script =
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Regex.Replace(Script,
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@"^(\s*public\s+)?((?!(if|switch|for)[^a-zA-Z0-9_])[a-zA-Z0-9_]*\s*\([^\)]*\)[^;]*\{)",
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@"$1void $2", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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// Replace <x,y,z> and <x,y,z,r>
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Script =
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Regex.Replace(Script, @"<([^,>;]*,[^,>;]*,[^,>;]*,[^,>;]*)>", @"new LSL_Types.Quaternion($1)",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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Script =
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Regex.Replace(Script, @"<([^,>;)]*,[^,>;]*,[^,>;]*)>", @"new LSL_Types.Vector3($1)",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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// Replace List []'s
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Script =
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Regex.Replace(Script, @"\[([^\]]*)\]", @"new LSL_Types.list($1)",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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// Replace (string) to .ToString() //
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Script =
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Regex.Replace(Script, @"\(string\)\s*([a-zA-Z0-9_.]+(\s*\([^\)]*\))?)", @"$1.ToString()",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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Script =
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Regex.Replace(Script, @"\((float|int)\)\s*([a-zA-Z0-9_.]+(\s*\([^\)]*\))?)", @"$1.Parse($2)",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
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// Replace "state STATENAME" with "state("statename")"
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Script =
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Regex.Replace(Script, @"(state)\s+([^;\n\r]+)(;[\r\n\s])", "$1(\"$2\")$3",
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RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase);
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// REPLACE BACK QUOTES
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foreach (string key in quotes.Keys)
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{
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string val;
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quotes.TryGetValue(key, out val);
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Script = Script.Replace(key, "\"" + val + "\"");
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}
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//System.Console.WriteLine(Script);
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Return = String.Empty;// +
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//"using OpenSim.Region.ScriptEngine.Common; using System.Collections.Generic;";
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//Return += String.Empty +
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// "namespace SecondLife { ";
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//Return += String.Empty +
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// //"[Serializable] " +
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// "public class Script : OpenSim.Region.ScriptEngine.Common.LSL_BaseClass { ";
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//Return += @"public Script() { } ";
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Return += Script;
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//Return += "} }\r\n";
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quotes.Clear();
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return Return;
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}
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}
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}
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