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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 OpenSimulator 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 System.Reflection;
using System.Text;
using LSL_Float = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLFloat;
using LSL_Integer = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger;
using LSL_Key = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
using LSL_List = OpenSim.Region.ScriptEngine.Shared.LSL_Types.list;
using LSL_Rotation = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Quaternion;
using LSL_String = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
using LSL_Vector = OpenSim.Region.ScriptEngine.Shared.LSL_Types.Vector3;
namespace OpenSim.Region.ScriptEngine.XMREngine {
public class ScriptConst {
public static Dictionary<string, ScriptConst> scriptConstants = Init ();
/**
* @brief look up the value of a given built-in constant.
* @param name = name of constant
* @returns null: no constant by that name defined
* else: pointer to ScriptConst struct
*/
public static ScriptConst Lookup (string name)
{
ScriptConst sc;
if (!scriptConstants.TryGetValue (name, out sc)) sc = null;
return sc;
}
private static Dictionary<string, ScriptConst> Init ()
{
Dictionary<string, ScriptConst> sc = new Dictionary<string, ScriptConst> ();
/*
* For every event code, define XMREVENTCODE_<eventname> and XMREVENTMASKn_<eventname> symbols.
*/
for (int i = 0; i < 64; i ++) {
try {
string s = ((ScriptEventCode)i).ToString ();
if ((s.Length > 0) && (s[0] >= 'a') && (s[0] <= 'z')) {
new ScriptConst (sc,
"XMREVENTCODE_" + s,
new CompValuInteger (new TokenTypeInt (null), i));
int n = i / 32 + 1;
int m = 1 << (i % 32);
new ScriptConst (sc,
"XMREVENTMASK" + n + "_" + s,
new CompValuInteger (new TokenTypeInt (null), m));
}
} catch { }
}
/*
* Also get all the constants from XMRInstAbstract and ScriptBaseClass etc as well.
*/
for (Type t = typeof (XMRInstAbstract); t != typeof (object); t = t.BaseType) {
AddInterfaceConstants (sc, t.GetFields ());
}
return sc;
}
/**
* @brief Add all constants defined by the given interface.
*/
// this one accepts only upper-case named fields
public static void AddInterfaceConstants (Dictionary<string, ScriptConst> sc, FieldInfo[] allFields)
{
List<FieldInfo> ucfs = new List<FieldInfo> (allFields.Length);
foreach (FieldInfo f in allFields) {
string fieldName = f.Name;
int i;
for (i = fieldName.Length; -- i >= 0;) {
if ("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_".IndexOf (fieldName[i]) < 0) break;
}
if (i < 0) ucfs.Add (f);
}
AddInterfaceConstants (sc, ucfs.GetEnumerator ());
}
// this one accepts all fields given to it
public static void AddInterfaceConstants (Dictionary<string, ScriptConst> sc, IEnumerator<FieldInfo> fields)
{
if (sc == null) sc = scriptConstants;
for (fields.Reset (); fields.MoveNext ();) {
FieldInfo constField = fields.Current;
Type fieldType = constField.FieldType;
CompValu cv;
/*
* The location of a simple number is the number itself.
* Access to the value gets compiled as an ldc instruction.
*/
if (fieldType == typeof (double)) {
cv = new CompValuFloat (new TokenTypeFloat (null),
(double)(double)constField.GetValue (null));
} else if (fieldType == typeof (int)) {
cv = new CompValuInteger (new TokenTypeInt (null),
(int)constField.GetValue (null));
} else if (fieldType == typeof (LSL_Integer)) {
cv = new CompValuInteger (new TokenTypeInt (null),
((LSL_Integer)constField.GetValue (null)).value);
}
/*
* The location of a string is the string itself.
* Access to the value gets compiled as an ldstr instruction.
*/
else if (fieldType == typeof (string)) {
cv = new CompValuString (new TokenTypeStr (null),
(string)constField.GetValue (null));
} else if (fieldType == typeof (LSL_String)) {
cv = new CompValuString (new TokenTypeStr (null),
(string)(LSL_String)constField.GetValue (null));
}
/*
* The location of everything else (objects) is the static field in the interface definition.
* Access to the value gets compiled as an ldsfld instruction.
*/
else {
cv = new CompValuSField (TokenType.FromSysType (null, fieldType), constField);
}
/*
* Add to dictionary.
*/
new ScriptConst (sc, constField.Name, cv);
}
}
/**
* @brief Add arbitrary constant available to script compilation.
* CAUTION: These values get compiled-in to a script and must not
* change over time as previously compiled scripts will
* still have the old values.
*/
public static ScriptConst AddConstant (string name, object value)
{
CompValu cv = null;
if (value is char) {
cv = new CompValuChar (new TokenTypeChar (null), (char)value);
}
if (value is double) {
cv = new CompValuFloat (new TokenTypeFloat (null), (double)(double)value);
}
if (value is float) {
cv = new CompValuFloat (new TokenTypeFloat (null), (double)(float)value);
}
if (value is int) {
cv = new CompValuInteger (new TokenTypeInt (null), (int)value);
}
if (value is string) {
cv = new CompValuString (new TokenTypeStr (null), (string)value);
}
if (value is LSL_Float) {
cv = new CompValuFloat (new TokenTypeFloat (null), (double)((LSL_Float)value).value);
}
if (value is LSL_Integer) {
cv = new CompValuInteger (new TokenTypeInt (null), ((LSL_Integer)value).value);
}
if (value is LSL_Rotation) {
LSL_Rotation r = (LSL_Rotation)value;
CompValu x = new CompValuFloat (new TokenTypeFloat (null), r.x);
CompValu y = new CompValuFloat (new TokenTypeFloat (null), r.y);
CompValu z = new CompValuFloat (new TokenTypeFloat (null), r.z);
CompValu s = new CompValuFloat (new TokenTypeFloat (null), r.s);
cv = new CompValuRot (new TokenTypeRot (null), x, y, z, s);
}
if (value is LSL_String) {
cv = new CompValuString (new TokenTypeStr (null), (string)(LSL_String)value);
}
if (value is LSL_Vector) {
LSL_Vector v = (LSL_Vector)value;
CompValu x = new CompValuFloat (new TokenTypeFloat (null), v.x);
CompValu y = new CompValuFloat (new TokenTypeFloat (null), v.y);
CompValu z = new CompValuFloat (new TokenTypeFloat (null), v.z);
cv = new CompValuVec (new TokenTypeVec (null), x, y, z);
}
if (value is OpenMetaverse.Quaternion) {
OpenMetaverse.Quaternion r = (OpenMetaverse.Quaternion)value;
CompValu x = new CompValuFloat (new TokenTypeFloat (null), r.X);
CompValu y = new CompValuFloat (new TokenTypeFloat (null), r.Y);
CompValu z = new CompValuFloat (new TokenTypeFloat (null), r.Z);
CompValu s = new CompValuFloat (new TokenTypeFloat (null), r.W);
cv = new CompValuRot (new TokenTypeRot (null), x, y, z, s);
}
if (value is OpenMetaverse.UUID) {
cv = new CompValuString (new TokenTypeKey (null), value.ToString ());
}
if (value is OpenMetaverse.Vector3) {
OpenMetaverse.Vector3 v = (OpenMetaverse.Vector3)value;
CompValu x = new CompValuFloat (new TokenTypeFloat (null), v.X);
CompValu y = new CompValuFloat (new TokenTypeFloat (null), v.Y);
CompValu z = new CompValuFloat (new TokenTypeFloat (null), v.Z);
cv = new CompValuVec (new TokenTypeVec (null), x, y, z);
}
if (cv == null) throw new Exception ("bad type " + value.GetType ().Name);
return new ScriptConst (scriptConstants, name, cv);
}
/*
* Instance variables
*/
public string name;
public CompValu rVal;
private ScriptConst (Dictionary<string, ScriptConst> lc, string name, CompValu rVal)
{
lc.Add (name, this);
this.name = name;
this.rVal = rVal;
}
}
}
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