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using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL
{
public class LSL2CSConverter
{
//private Regex rnw = new Regex(@"[a-zA-Z0-9_\-]", RegexOptions.Compiled);
private Dictionary<string, string> DataTypes = new Dictionary<string, string>();
private Dictionary<string, string> QUOTES = new Dictionary<string, string>();
public LSL2CSConverter()
{
// Only the types we need to convert
DataTypes.Add("void", "void");
DataTypes.Add("integer", "int");
DataTypes.Add("float", "double");
DataTypes.Add("string", "string");
DataTypes.Add("key", "string");
DataTypes.Add("vector", "LSL_Types.Vector3");
DataTypes.Add("rotation", "LSL_Types.Quaternion");
DataTypes.Add("list", "list");
DataTypes.Add("null", "null");
}
public string Convert(string Script)
{
string Return = "";
Script = " \r\n" + Script;
//
// Prepare script for processing
//
// Clean up linebreaks
Script = Regex.Replace(Script, @"\r\n", "\n");
Script = Regex.Replace(Script, @"\n", "\r\n");
// QUOTE REPLACEMENT
// temporarily replace quotes so we can work our magic on the script without
// always considering if we are inside our outside ""'s
string _Script = "";
string C;
bool in_quote = false;
bool quote_replaced = false;
string quote_replacement_string = "Q_U_O_T_E_REPLACEMENT_";
string quote = "";
bool last_was_escape = false;
int quote_replaced_count = 0;
for (int p = 0; p < Script.Length; p++)
{
C = Script.Substring(p, 1);
while (true)
{
// found " and last was not \ so this is not an escaped \"
if (C == "\"" && last_was_escape == false)
{
// Toggle inside/outside quote
in_quote = !in_quote;
if (in_quote)
{
quote_replaced_count++;
}
else
{
if (quote == "")
{
// We didn't replace quote, probably because of empty string?
_Script += quote_replacement_string + quote_replaced_count.ToString().PadLeft(5, "0".ToCharArray()[0]);
}
// We just left a quote
QUOTES.Add(quote_replacement_string + quote_replaced_count.ToString().PadLeft(5, "0".ToCharArray()[0]), quote);
quote = "";
}
break;
}
if (!in_quote)
{
// We are not inside a quote
quote_replaced = false;
}
else
{
// We are inside a quote
if (!quote_replaced)
{
// Replace quote
_Script += quote_replacement_string + quote_replaced_count.ToString().PadLeft(5, "0".ToCharArray()[0]);
quote_replaced = true;
}
quote += C;
break;
}
_Script += C;
break;
}
last_was_escape = false;
if (C == @"\")
{
last_was_escape = true;
}
}
Script = _Script;
//
// END OF QUOTE REPLACEMENT
//
//
// PROCESS STATES
// Remove state definitions and add state names to start of each event within state
//
int ilevel = 0;
int lastlevel = 0;
string ret = "";
string cache = "";
bool in_state = false;
string current_statename = "";
for (int p = 0; p < Script.Length; p++)
{
C = Script.Substring(p, 1);
while (true)
{
// inc / dec level
if (C == @"{")
ilevel++;
if (C == @"}")
ilevel--;
if (ilevel < 0)
ilevel = 0;
cache += C;
// if level == 0, add to return
if (ilevel == 1 && lastlevel == 0)
{
// 0 => 1: Get last
Match m = Regex.Match(cache, @"(?![a-zA-Z_]+)\s*([a-zA-Z_]+)[^a-zA-Z_\(\)]*{", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
in_state = false;
if (m.Success)
{
// Go back to level 0, this is not a state
in_state = true;
current_statename = m.Groups[1].Captures[0].Value;
//Console.WriteLine("Current statename: " + current_statename);
cache = Regex.Replace(cache, @"(?<s1>(?![a-zA-Z_]+)\s*)" + @"([a-zA-Z_]+)(?<s2>[^a-zA-Z_\(\)]*){", "${s1}${s2}", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
}
ret += cache;
cache = "";
}
if (ilevel == 0 && lastlevel == 1)
{
// 1 => 0: Remove last }
if (in_state == true)
{
cache = cache.Remove(cache.Length - 1, 1);
//cache = Regex.Replace(cache, "}$", "", RegexOptions.Multiline | RegexOptions.Singleline);
//Replace function names
// void dataserver(key query_id, string data) {
//cache = Regex.Replace(cache, @"([^a-zA-Z_]\s*)((?!if|switch|for)[a-zA-Z_]+\s*\([^\)]*\)[^{]*{)", "$1" + "<STATE>" + "$2", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
//Console.WriteLine("Replacing using statename: " + current_statename);
cache = Regex.Replace(cache, @"^(\s*)((?!(if|switch|for)[^a-zA-Z0-9_])[a-zA-Z0-9_]*\s*\([^\)]*\)[^;]*\{)", @"$1public " + current_statename + "_event_$2", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
}
ret += cache;
cache = "";
in_state = true;
current_statename = "";
}
break;
}
lastlevel = ilevel;
}
ret += cache;
cache = "";
Script = ret;
ret = "";
foreach (string key in DataTypes.Keys)
{
string val;
DataTypes.TryGetValue(key, out val);
// Replace CAST - (integer) with (int)
Script = Regex.Replace(Script, @"\(" + key + @"\)", @"(" + val + ")", RegexOptions.Compiled | RegexOptions.Multiline);
// Replace return types and function variables - integer a() and f(integer a, integer a)
Script = Regex.Replace(Script, @"(^|;|}|[\(,])(\s*)" + key + @"(\s*)", @"$1$2" + val + "$3", RegexOptions.Compiled | RegexOptions.Multiline);
}
// Add "void" in front of functions that needs it
Script = Regex.Replace(Script, @"^(\s*public\s+)((?!(if|switch|for)[^a-zA-Z0-9_])[a-zA-Z0-9_]*\s*\([^\)]*\)[^;]*\{)", @"$1void $2", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
// Replace <x,y,z> and <x,y,z,r>
Script = Regex.Replace(Script, @"<([^,>]*,[^,>]*,[^,>]*,[^,>]*)>", @"new LSL_Types.Quaternion($1)", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
Script = Regex.Replace(Script, @"<([^,>]*,[^,>]*,[^,>]*)>", @"new LSL_Types.Vector3($1)", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
// Replace List []'s
Script = Regex.Replace(Script, @"\[([^\]]*)\]", @"List.Parse($1)", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
// Replace (string) to .ToString() //
Script = Regex.Replace(Script, @"\(string\)\s*([a-zA-Z0-9_]+(\s*\([^\)]*\))?)", @"$1.ToString()", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
Script = Regex.Replace(Script, @"\((float|int)\)\s*([a-zA-Z0-9_]+(\s*\([^\)]*\))?)", @"$1.Parse($2)", RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.Singleline);
// REPLACE BACK QUOTES
foreach (string key in QUOTES.Keys)
{
string val;
QUOTES.TryGetValue(key, out val);
Script = Script.Replace(key, "\"" + val + "\"");
}
// Add namespace, class name and inheritance
Return = "";// +
//"using System; " +
//"using System.Collections.Generic; " +
//"using System.Text; " +
//"using OpenSim.Region.ScriptEngine.Common; " +
//"using integer = System.Int32; " +
//"using key = System.String; ";
//// Make a Using out of DataTypes
//// Using integer = System.Int32;
//string _val;
//foreach (string key in DataTypes.Keys)
//{
// DataTypes.TryGetValue(key, out _val);
// if (key != _val)
// {
// Return += "using " + key + " = " + _val + "; ";
// }
//}
Return += "" +
"namespace SecondLife { ";
Return += "" +
//"[Serializable] " +
"public class Script : OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL.LSL_BaseClass { ";
Return += @"public Script() { } ";
Return += Script;
Return += "} }\r\n";
return Return;
}
}
}
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