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Compiler Connection! One world, one compiler!

0.6.0-stable
Melanie Thielker 2008-09-26 16:11:53 +00:00
parent 0313a1d439
commit d8c470343e
26 changed files with 23 additions and 47590 deletions
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946
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/CSCodeGenerator.cs
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@ -1,946 +0,0 @@
/*
* 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.IO;
using System.Collections.Generic;
using Tools;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL
{
public class CSCodeGenerator
{
private SYMBOL m_astRoot = null;
private Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> m_positionMap;
private int m_indentWidth = 4; // for indentation
private int m_braceCount; // for indentation
private int m_CSharpLine; // the current line of generated C# code
private int m_CSharpCol; // the current column of generated C# code
/// <summary>
/// Creates an 'empty' CSCodeGenerator instance.
/// </summary>
public CSCodeGenerator()
{
ResetCounters();
}
/// <summary>
/// Get the mapping between LSL and C# line/column number.
/// </summary>
/// <returns>Dictionary\<KeyValuePair\<int, int\>, KeyValuePair\<int, int\>\>.</returns>
public Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> PositionMap
{
get { return m_positionMap; }
}
/// <summary>
/// Get the mapping between LSL and C# line/column number.
/// </summary>
/// <returns>SYMBOL pointing to root of the abstract syntax tree.</returns>
public SYMBOL ASTRoot
{
get { return m_astRoot; }
}
/// <summary>
/// Resets various counters and metadata.
/// </summary>
private void ResetCounters()
{
m_braceCount = 0;
m_CSharpLine = 0;
m_CSharpCol = 1;
m_positionMap = new Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>>();
m_astRoot = null;
}
/// <summary>
/// Generate the code from the AST we have.
/// </summary>
/// <param name="script">The LSL source as a string.</param>
/// <returns>String containing the generated C# code.</returns>
public string Convert(string script)
{
ResetCounters();
Parser p = new LSLSyntax(new yyLSLSyntax(), new ErrorHandler(true));
// Obviously this needs to be in a try/except block.
LSL2CSCodeTransformer codeTransformer = new LSL2CSCodeTransformer(p.Parse(script));
m_astRoot = codeTransformer.Transform();
string retstr = String.Empty;
// standard preamble
//retstr = GenerateLine("using OpenSim.Region.ScriptEngine.Common;");
//retstr += GenerateLine("using System.Collections.Generic;");
//retstr += GenerateLine("");
//retstr += GenerateLine("namespace SecondLife");
//retstr += GenerateLine("{");
m_braceCount++;
//retstr += GenerateIndentedLine("public class Script : OpenSim.Region.ScriptEngine.Common");
//retstr += GenerateIndentedLine("{");
m_braceCount++;
// line number
m_CSharpLine += 3;
// here's the payload
retstr += GenerateLine();
foreach (SYMBOL s in m_astRoot.kids)
retstr += GenerateNode(s);
// close braces!
m_braceCount--;
//retstr += GenerateIndentedLine("}");
m_braceCount--;
//retstr += GenerateLine("}");
return retstr;
}
/// <summary>
/// Recursively called to generate each type of node. Will generate this
/// node, then all it's children.
/// </summary>
/// <param name="s">The current node to generate code for.</param>
/// <returns>String containing C# code for SYMBOL s.</returns>
private string GenerateNode(SYMBOL s)
{
string retstr = String.Empty;
// make sure to put type lower in the inheritance hierarchy first
// ie: since IdentArgument and ExpressionArgument inherit from
// Argument, put IdentArgument and ExpressionArgument before Argument
if (s is GlobalFunctionDefinition)
retstr += GenerateGlobalFunctionDefinition((GlobalFunctionDefinition) s);
else if (s is GlobalVariableDeclaration)
retstr += GenerateGlobalVariableDeclaration((GlobalVariableDeclaration) s);
else if (s is State)
retstr += GenerateState((State) s);
else if (s is CompoundStatement)
retstr += GenerateCompoundStatement((CompoundStatement) s);
else if (s is Declaration)
retstr += GenerateDeclaration((Declaration) s);
else if (s is Statement)
retstr += GenerateStatement((Statement) s);
else if (s is ReturnStatement)
retstr += GenerateReturnStatement((ReturnStatement) s);
else if (s is JumpLabel)
retstr += GenerateJumpLabel((JumpLabel) s);
else if (s is JumpStatement)
retstr += GenerateJumpStatement((JumpStatement) s);
else if (s is StateChange)
retstr += GenerateStateChange((StateChange) s);
else if (s is IfStatement)
retstr += GenerateIfStatement((IfStatement) s);
else if (s is WhileStatement)
retstr += GenerateWhileStatement((WhileStatement) s);
else if (s is DoWhileStatement)
retstr += GenerateDoWhileStatement((DoWhileStatement) s);
else if (s is ForLoop)
retstr += GenerateForLoop((ForLoop) s);
else if (s is ArgumentList)
retstr += GenerateArgumentList((ArgumentList) s);
else if (s is Assignment)
retstr += GenerateAssignment((Assignment) s);
else if (s is BinaryExpression)
retstr += GenerateBinaryExpression((BinaryExpression) s);
else if (s is ParenthesisExpression)
retstr += GenerateParenthesisExpression((ParenthesisExpression) s);
else if (s is UnaryExpression)
retstr += GenerateUnaryExpression((UnaryExpression) s);
else if (s is IncrementDecrementExpression)
retstr += GenerateIncrementDecrementExpression((IncrementDecrementExpression) s);
else if (s is TypecastExpression)
retstr += GenerateTypecastExpression((TypecastExpression) s);
else if (s is FunctionCall)
retstr += GenerateFunctionCall((FunctionCall) s);
else if (s is VectorConstant)
retstr += GenerateVectorConstant((VectorConstant) s);
else if (s is RotationConstant)
retstr += GenerateRotationConstant((RotationConstant) s);
else if (s is ListConstant)
retstr += GenerateListConstant((ListConstant) s);
else if (s is Constant)
retstr += GenerateConstant((Constant) s);
else if (s is IdentDotExpression)
retstr += Generate(((IdentDotExpression) s).Name + "." + ((IdentDotExpression) s).Member, s);
else if (s is IdentExpression)
retstr += Generate(((IdentExpression) s).Name, s);
else if (s is IDENT)
retstr += Generate(((TOKEN) s).yytext, s);
else
{
foreach (SYMBOL kid in s.kids)
retstr += GenerateNode(kid);
}
return retstr;
}
/// <summary>
/// Generates the code for a GlobalFunctionDefinition node.
/// </summary>
/// <param name="gf">The GlobalFunctionDefinition node.</param>
/// <returns>String containing C# code for GlobalFunctionDefinition gf.</returns>
private string GenerateGlobalFunctionDefinition(GlobalFunctionDefinition gf)
{
string retstr = String.Empty;
// we need to separate the argument declaration list from other kids
List<SYMBOL> argumentDeclarationListKids = new List<SYMBOL>();
List<SYMBOL> remainingKids = new List<SYMBOL>();
foreach (SYMBOL kid in gf.kids)
if (kid is ArgumentDeclarationList)
argumentDeclarationListKids.Add(kid);
else
remainingKids.Add(kid);
retstr += GenerateIndented(String.Format("{0} {1}(", gf.ReturnType, gf.Name), gf);
// print the state arguments, if any
foreach (SYMBOL kid in argumentDeclarationListKids)
retstr += GenerateArgumentDeclarationList((ArgumentDeclarationList) kid);
retstr += GenerateLine(")");
foreach (SYMBOL kid in remainingKids)
retstr += GenerateNode(kid);
return retstr;
}
/// <summary>
/// Generates the code for a GlobalVariableDeclaration node.
/// </summary>
/// <param name="gv">The GlobalVariableDeclaration node.</param>
/// <returns>String containing C# code for GlobalVariableDeclaration gv.</returns>
private string GenerateGlobalVariableDeclaration(GlobalVariableDeclaration gv)
{
string retstr = String.Empty;
foreach (SYMBOL s in gv.kids)
{
retstr += Indent();
retstr += GenerateNode(s);
retstr += GenerateLine(";");
}
return retstr;
}
/// <summary>
/// Generates the code for a State node.
/// </summary>
/// <param name="s">The State node.</param>
/// <returns>String containing C# code for State s.</returns>
private string GenerateState(State s)
{
string retstr = String.Empty;
foreach (SYMBOL kid in s.kids)
if (kid is StateEvent)
retstr += GenerateStateEvent((StateEvent) kid, s.Name);
return retstr;
}
/// <summary>
/// Generates the code for a StateEvent node.
/// </summary>
/// <param name="se">The StateEvent node.</param>
/// <param name="parentStateName">The name of the parent state.</param>
/// <returns>String containing C# code for StateEvent se.</returns>
private string GenerateStateEvent(StateEvent se, string parentStateName)
{
string retstr = String.Empty;
// we need to separate the argument declaration list from other kids
List<SYMBOL> argumentDeclarationListKids = new List<SYMBOL>();
List<SYMBOL> remainingKids = new List<SYMBOL>();
foreach (SYMBOL kid in se.kids)
if (kid is ArgumentDeclarationList)
argumentDeclarationListKids.Add(kid);
else
remainingKids.Add(kid);
// "state" (function) declaration
retstr += GenerateIndented(String.Format("public void {0}_event_{1}(", parentStateName, se.Name), se);
// print the state arguments, if any
foreach (SYMBOL kid in argumentDeclarationListKids)
retstr += GenerateArgumentDeclarationList((ArgumentDeclarationList) kid);
retstr += GenerateLine(")");
foreach (SYMBOL kid in remainingKids)
retstr += GenerateNode(kid);
return retstr;
}
/// <summary>
/// Generates the code for an ArgumentDeclarationList node.
/// </summary>
/// <param name="adl">The ArgumentDeclarationList node.</param>
/// <returns>String containing C# code for ArgumentDeclarationList adl.</returns>
private string GenerateArgumentDeclarationList(ArgumentDeclarationList adl)
{
string retstr = String.Empty;
int comma = adl.kids.Count - 1; // tells us whether to print a comma
foreach (Declaration d in adl.kids)
{
retstr += Generate(String.Format("{0} {1}", d.Datatype, d.Id), d);
if (0 < comma--)
retstr += Generate(", ");
}
return retstr;
}
/// <summary>
/// Generates the code for an ArgumentList node.
/// </summary>
/// <param name="al">The ArgumentList node.</param>
/// <returns>String containing C# code for ArgumentList al.</returns>
private string GenerateArgumentList(ArgumentList al)
{
string retstr = String.Empty;
int comma = al.kids.Count - 1; // tells us whether to print a comma
foreach (SYMBOL s in al.kids)
{
retstr += GenerateNode(s);
if (0 < comma--)
retstr += Generate(", ");
}
return retstr;
}
/// <summary>
/// Generates the code for a CompoundStatement node.
/// </summary>
/// <param name="cs">The CompoundStatement node.</param>
/// <returns>String containing C# code for CompoundStatement cs.</returns>
private string GenerateCompoundStatement(CompoundStatement cs)
{
string retstr = String.Empty;
// opening brace
retstr += GenerateIndentedLine("{");
m_braceCount++;
foreach (SYMBOL kid in cs.kids)
retstr += GenerateNode(kid);
// closing brace
m_braceCount--;
retstr += GenerateIndentedLine("}");
return retstr;
}
/// <summary>
/// Generates the code for a Declaration node.
/// </summary>
/// <param name="d">The Declaration node.</param>
/// <returns>String containing C# code for Declaration d.</returns>
private string GenerateDeclaration(Declaration d)
{
return Generate(String.Format("{0} {1}", d.Datatype, d.Id), d);
}
/// <summary>
/// Generates the code for a Statement node.
/// </summary>
/// <param name="s">The Statement node.</param>
/// <returns>String containing C# code for Statement s.</returns>
private string GenerateStatement(Statement s)
{
string retstr = String.Empty;
bool printSemicolon = true;
retstr += Indent();
if (0 < s.kids.Count)
{
// Jump label prints its own colon, we don't need a semicolon.
printSemicolon = !(s.kids.Top is JumpLabel);
foreach (SYMBOL kid in s.kids)
retstr += GenerateNode(kid);
}
if (printSemicolon)
retstr += GenerateLine(";");
return retstr;
}
/// <summary>
/// Generates the code for an Assignment node.
/// </summary>
/// <param name="a">The Assignment node.</param>
/// <returns>String containing C# code for Assignment a.</returns>
private string GenerateAssignment(Assignment a)
{
string retstr = String.Empty;
retstr += GenerateNode((SYMBOL) a.kids.Pop());
retstr += Generate(String.Format(" {0} ", a.AssignmentType), a);
foreach (SYMBOL kid in a.kids)
retstr += GenerateNode(kid);
return retstr;
}
/// <summary>
/// Generates the code for a ReturnStatement node.
/// </summary>
/// <param name="rs">The ReturnStatement node.</param>
/// <returns>String containing C# code for ReturnStatement rs.</returns>
private string GenerateReturnStatement(ReturnStatement rs)
{
string retstr = String.Empty;
retstr += Generate("return ", rs);
foreach (SYMBOL kid in rs.kids)
retstr += GenerateNode(kid);
return retstr;
}
/// <summary>
/// Generates the code for a JumpLabel node.
/// </summary>
/// <param name="jl">The JumpLabel node.</param>
/// <returns>String containing C# code for JumpLabel jl.</returns>
private string GenerateJumpLabel(JumpLabel jl)
{
return Generate(String.Format("{0}:\n", jl.LabelName), jl);
}
/// <summary>
/// Generates the code for a JumpStatement node.
/// </summary>
/// <param name="js">The JumpStatement node.</param>
/// <returns>String containing C# code for JumpStatement js.</returns>
private string GenerateJumpStatement(JumpStatement js)
{
return Generate(String.Format("goto {0}", js.TargetName), js);
}
/// <summary>
/// Generates the code for an IfStatement node.
/// </summary>
/// <param name="ifs">The IfStatement node.</param>
/// <returns>String containing C# code for IfStatement ifs.</returns>
private string GenerateIfStatement(IfStatement ifs)
{
string retstr = String.Empty;
retstr += GenerateIndented("if (", ifs);
retstr += GenerateNode((SYMBOL) ifs.kids.Pop());
retstr += GenerateLine(")");
// CompoundStatement handles indentation itself but we need to do it
// otherwise.
bool indentHere = ifs.kids.Top is Statement;
if (indentHere) m_braceCount++;
retstr += GenerateNode((SYMBOL) ifs.kids.Pop());
if (indentHere) m_braceCount--;
if (0 < ifs.kids.Count) // do it again for an else
{
retstr += GenerateIndentedLine("else", ifs);
indentHere = ifs.kids.Top is Statement;
if (indentHere) m_braceCount++;
retstr += GenerateNode((SYMBOL) ifs.kids.Pop());
if (indentHere) m_braceCount--;
}
return retstr;
}
/// <summary>
/// Generates the code for a StateChange node.
/// </summary>
/// <param name="sc">The StateChange node.</param>
/// <returns>String containing C# code for StateChange sc.</returns>
private string GenerateStateChange(StateChange sc)
{
return Generate(String.Format("state(\"{0}\")", sc.NewState), sc);
}
/// <summary>
/// Generates the code for a WhileStatement node.
/// </summary>
/// <param name="ws">The WhileStatement node.</param>
/// <returns>String containing C# code for WhileStatement ws.</returns>
private string GenerateWhileStatement(WhileStatement ws)
{
string retstr = String.Empty;
retstr += GenerateIndented("while (", ws);
retstr += GenerateNode((SYMBOL) ws.kids.Pop());
retstr += GenerateLine(")");
// CompoundStatement handles indentation itself but we need to do it
// otherwise.
bool indentHere = ws.kids.Top is Statement;
if (indentHere) m_braceCount++;
retstr += GenerateNode((SYMBOL) ws.kids.Pop());
if (indentHere) m_braceCount--;
return retstr;
}
/// <summary>
/// Generates the code for a DoWhileStatement node.
/// </summary>
/// <param name="dws">The DoWhileStatement node.</param>
/// <returns>String containing C# code for DoWhileStatement dws.</returns>
private string GenerateDoWhileStatement(DoWhileStatement dws)
{
string retstr = String.Empty;
retstr += GenerateIndentedLine("do", dws);
// CompoundStatement handles indentation itself but we need to do it
// otherwise.
bool indentHere = dws.kids.Top is Statement;
if (indentHere) m_braceCount++;
retstr += GenerateNode((SYMBOL) dws.kids.Pop());
if (indentHere) m_braceCount--;
retstr += GenerateIndented("while (", dws);
retstr += GenerateNode((SYMBOL) dws.kids.Pop());
retstr += GenerateLine(");");
return retstr;
}
/// <summary>
/// Generates the code for a ForLoop node.
/// </summary>
/// <param name="fl">The ForLoop node.</param>
/// <returns>String containing C# code for ForLoop fl.</returns>
private string GenerateForLoop(ForLoop fl)
{
string retstr = String.Empty;
retstr += GenerateIndented("for (", fl);
// for ( x = 0 ; x < 10 ; x++ )
// ^^^^^^^
retstr += GenerateForLoopStatement((ForLoopStatement) fl.kids.Pop());
retstr += Generate("; ");
// for ( x = 0 ; x < 10 ; x++ )
// ^^^^^^^^
retstr += GenerateNode((SYMBOL) fl.kids.Pop());
retstr += Generate("; ");
// for ( x = 0 ; x < 10 ; x++ )
// ^^^^^
retstr += GenerateForLoopStatement((ForLoopStatement) fl.kids.Pop());
retstr += GenerateLine(")");
// CompoundStatement handles indentation itself but we need to do it
// otherwise.
bool indentHere = fl.kids.Top is Statement;
if (indentHere) m_braceCount++;
retstr += GenerateNode((SYMBOL) fl.kids.Pop());
if (indentHere) m_braceCount--;
return retstr;
}
/// <summary>
/// Generates the code for a ForLoopStatement node.
/// </summary>
/// <param name="fls">The ForLoopStatement node.</param>
/// <returns>String containing C# code for ForLoopStatement fls.</returns>
private string GenerateForLoopStatement(ForLoopStatement fls)
{
string retstr = String.Empty;
int comma = fls.kids.Count - 1; // tells us whether to print a comma
foreach (SYMBOL s in fls.kids)
{
retstr += GenerateNode(s);
if (0 < comma--)
retstr += Generate(", ");
}
return retstr;
}
/// <summary>
/// Generates the code for a BinaryExpression node.
/// </summary>
/// <param name="be">The BinaryExpression node.</param>
/// <returns>String containing C# code for BinaryExpression be.</returns>
private string GenerateBinaryExpression(BinaryExpression be)
{
string retstr = String.Empty;
retstr += GenerateNode((SYMBOL) be.kids.Pop());
retstr += Generate(String.Format(" {0} ", be.ExpressionSymbol), be);
foreach (SYMBOL kid in be.kids)
retstr += GenerateNode(kid);
return retstr;
}
/// <summary>
/// Generates the code for a UnaryExpression node.
/// </summary>
/// <param name="ue">The UnaryExpression node.</param>
/// <returns>String containing C# code for UnaryExpression ue.</returns>
private string GenerateUnaryExpression(UnaryExpression ue)
{
string retstr = String.Empty;
retstr += Generate(ue.UnarySymbol, ue);
retstr += GenerateNode((SYMBOL) ue.kids.Pop());
return retstr;
}
/// <summary>
/// Generates the code for a ParenthesisExpression node.
/// </summary>
/// <param name="pe">The ParenthesisExpression node.</param>
/// <returns>String containing C# code for ParenthesisExpression pe.</returns>
private string GenerateParenthesisExpression(ParenthesisExpression pe)
{
string retstr = String.Empty;
retstr += Generate("(");
foreach (SYMBOL kid in pe.kids)
retstr += GenerateNode(kid);
retstr += Generate(")");
return retstr;
}
/// <summary>
/// Generates the code for a IncrementDecrementExpression node.
/// </summary>
/// <param name="ide">The IncrementDecrementExpression node.</param>
/// <returns>String containing C# code for IncrementDecrementExpression ide.</returns>
private string GenerateIncrementDecrementExpression(IncrementDecrementExpression ide)
{
string retstr = String.Empty;
if (0 < ide.kids.Count)
{
IdentDotExpression dot = (IdentDotExpression) ide.kids.Top;
retstr += Generate(String.Format("{0}", ide.PostOperation ? dot.Name + "." + dot.Member + ide.Operation : ide.Operation + dot.Name + "." + dot.Member), ide);
}
else
retstr += Generate(String.Format("{0}", ide.PostOperation ? ide.Name + ide.Operation : ide.Operation + ide.Name), ide);
return retstr;
}
/// <summary>
/// Generates the code for a TypecastExpression node.
/// </summary>
/// <param name="te">The TypecastExpression node.</param>
/// <returns>String containing C# code for TypecastExpression te.</returns>
private string GenerateTypecastExpression(TypecastExpression te)
{
string retstr = String.Empty;
// we wrap all typecasted statements in parentheses
retstr += Generate(String.Format("({0}) (", te.TypecastType), te);
retstr += GenerateNode((SYMBOL) te.kids.Pop());
retstr += Generate(")");
return retstr;
}
/// <summary>
/// Generates the code for a FunctionCall node.
/// </summary>
/// <param name="fc">The FunctionCall node.</param>
/// <returns>String containing C# code for FunctionCall fc.</returns>
private string GenerateFunctionCall(FunctionCall fc)
{
string retstr = String.Empty;
retstr += Generate(String.Format("{0}(", fc.Id), fc);
foreach (SYMBOL kid in fc.kids)
retstr += GenerateNode(kid);
retstr += Generate(")");
return retstr;
}
/// <summary>
/// Generates the code for a Constant node.
/// </summary>
/// <param name="c">The Constant node.</param>
/// <returns>String containing C# code for Constant c.</returns>
private string GenerateConstant(Constant c)
{
string retstr = String.Empty;
// Supprt LSL's weird acceptance of floats with no trailing digits
// after the period. Turn float x = 10.; into float x = 10.0;
if ("LSL_Types.LSLFloat" == c.Type)
{
int dotIndex = c.Value.IndexOf('.') + 1;
if (0 < dotIndex && (dotIndex == c.Value.Length || !Char.IsDigit(c.Value[dotIndex])))
c.Value = c.Value.Insert(dotIndex, "0");
c.Value = "new LSL_Types.LSLFloat("+c.Value+")";
}
else if ("LSL_Types.LSLInteger" == c.Type)
{
c.Value = "new LSL_Types.LSLInteger("+c.Value+")";
}
else if ("LSL_Types.LSLString" == c.Type)
{
c.Value = "new LSL_Types.LSLString(\""+c.Value+"\")";
}
retstr += Generate(c.Value, c);
return retstr;
}
/// <summary>
/// Generates the code for a VectorConstant node.
/// </summary>
/// <param name="vc">The VectorConstant node.</param>
/// <returns>String containing C# code for VectorConstant vc.</returns>
private string GenerateVectorConstant(VectorConstant vc)
{
string retstr = String.Empty;
retstr += Generate(String.Format("new {0}(", vc.Type), vc);
retstr += GenerateNode((SYMBOL) vc.kids.Pop());
retstr += Generate(", ");
retstr += GenerateNode((SYMBOL) vc.kids.Pop());
retstr += Generate(", ");
retstr += GenerateNode((SYMBOL) vc.kids.Pop());
retstr += Generate(")");
return retstr;
}
/// <summary>
/// Generates the code for a RotationConstant node.
/// </summary>
/// <param name="rc">The RotationConstant node.</param>
/// <returns>String containing C# code for RotationConstant rc.</returns>
private string GenerateRotationConstant(RotationConstant rc)
{
string retstr = String.Empty;
retstr += Generate(String.Format("new {0}(", rc.Type), rc);
retstr += GenerateNode((SYMBOL) rc.kids.Pop());
retstr += Generate(", ");
retstr += GenerateNode((SYMBOL) rc.kids.Pop());
retstr += Generate(", ");
retstr += GenerateNode((SYMBOL) rc.kids.Pop());
retstr += Generate(", ");
retstr += GenerateNode((SYMBOL) rc.kids.Pop());
retstr += Generate(")");
return retstr;
}
/// <summary>
/// Generates the code for a ListConstant node.
/// </summary>
/// <param name="lc">The ListConstant node.</param>
/// <returns>String containing C# code for ListConstant lc.</returns>
private string GenerateListConstant(ListConstant lc)
{
string retstr = String.Empty;
retstr += Generate(String.Format("new {0}(", lc.Type), lc);
foreach (SYMBOL kid in lc.kids)
retstr += GenerateNode(kid);
retstr += Generate(")");
return retstr;
}
/// <summary>
/// Prints a newline.
/// </summary>
/// <returns>A newline.</returns>
private string GenerateLine()
{
return GenerateLine("");
}
/// <summary>
/// Prints text, followed by a newline.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <returns>String s followed by newline.</returns>
private string GenerateLine(string s)
{
return GenerateLine(s, null);
}
/// <summary>
/// Prints text, followed by a newline.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <param name="sym">Symbol being generated to extract original line
/// number and column from.</param>
/// <returns>String s followed by newline.</returns>
private string GenerateLine(string s, SYMBOL sym)
{
string retstr = Generate(s, sym) + "\n";
m_CSharpLine++;
m_CSharpCol = 1;
return retstr;
}
/// <summary>
/// Prints text.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <returns>String s.</returns>
private string Generate(string s)
{
return Generate(s, null);
}
/// <summary>
/// Prints text.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <param name="sym">Symbol being generated to extract original line
/// number and column from.</param>
/// <returns>String s.</returns>
private string Generate(string s, SYMBOL sym)
{
if (null != sym)
m_positionMap.Add(new KeyValuePair<int, int>(m_CSharpLine, m_CSharpCol), new KeyValuePair<int, int>(sym.Line, sym.Position));
m_CSharpCol += s.Length;
return s;
}
/// <summary>
/// Prints text correctly indented, followed by a newline.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <returns>Properly indented string s followed by newline.</returns>
private string GenerateIndentedLine(string s)
{
return GenerateIndentedLine(s, null);
}
/// <summary>
/// Prints text correctly indented, followed by a newline.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <param name="sym">Symbol being generated to extract original line
/// number and column from.</param>
/// <returns>Properly indented string s followed by newline.</returns>
private string GenerateIndentedLine(string s, SYMBOL sym)
{
string retstr = GenerateIndented(s, sym) + "\n";
m_CSharpLine++;
m_CSharpCol = 1;
return retstr;
}
/// <summary>
/// Prints text correctly indented.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <returns>Properly indented string s.</returns>
//private string GenerateIndented(string s)
//{
// return GenerateIndented(s, null);
//}
// THIS FUNCTION IS COMMENTED OUT TO SUPPRESS WARNINGS
/// <summary>
/// Prints text correctly indented.
/// </summary>
/// <param name="s">String of text to print.</param>
/// <param name="sym">Symbol being generated to extract original line
/// number and column from.</param>
/// <returns>Properly indented string s.</returns>
private string GenerateIndented(string s, SYMBOL sym)
{
string retstr = Indent() + s;
if (null != sym)
m_positionMap.Add(new KeyValuePair<int, int>(m_CSharpLine, m_CSharpCol), new KeyValuePair<int, int>(sym.Line, sym.Position));
m_CSharpCol += s.Length;
return retstr;
}
/// <summary>
/// Prints correct indentation.
/// </summary>
/// <returns>Indentation based on brace count.</returns>
private string Indent()
{
string retstr = String.Empty;
for (int i = 0; i < m_braceCount; i++)
for (int j = 0; j < m_indentWidth; j++)
{
retstr += " ";
m_CSharpCol++;
}
return retstr;
}
}
}

509
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/Compiler.cs
View File

@ -1,509 +0,0 @@
/*
* 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.CodeDom.Compiler;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using Microsoft.CSharp;
using Microsoft.JScript;
using Microsoft.VisualBasic;
using OpenSim.Region.Environment.Interfaces;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL
{
public class Compiler
{
private static readonly log4net.ILog m_log
= log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// * Uses "LSL2Converter" to convert LSL to C# if necessary.
// * Compiles C#-code into an assembly
// * Returns assembly name ready for AppDomain load.
//
// Assembly is compiled using LSL_BaseClass as base. Look at debug C# code file created when LSL script is compiled for full details.
//
internal enum enumCompileType
{
lsl = 0,
cs = 1,
vb = 2,
js = 3,
yp = 4
}
/// <summary>
/// This contains number of lines WE use for header when compiling script. User will get error in line x-LinesToRemoveOnError when error occurs.
/// </summary>
public int LinesToRemoveOnError = 3;
private enumCompileType DefaultCompileLanguage;
private bool WriteScriptSourceToDebugFile;
private bool CompileWithDebugInformation;
// private bool CleanUpOldScriptsOnStartup;
private Dictionary<string, bool> AllowedCompilers = new Dictionary<string, bool>(StringComparer.CurrentCultureIgnoreCase);
private Dictionary<string, enumCompileType> LanguageMapping = new Dictionary<string, enumCompileType>(StringComparer.CurrentCultureIgnoreCase);
private string FilePrefix;
private string ScriptEnginesPath = "ScriptEngines";
private static CSCodeGenerator LSL_Converter = new CSCodeGenerator();
private static Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> m_positionMap; // mapping between LSL and C# line/column numbers
private static CSharpCodeProvider CScodeProvider = new CSharpCodeProvider();
private static VBCodeProvider VBcodeProvider = new VBCodeProvider();
private static JScriptCodeProvider JScodeProvider = new JScriptCodeProvider();
private static CSharpCodeProvider YPcodeProvider = new CSharpCodeProvider(); // YP is translated into CSharp
private static YP2CSConverter YP_Converter = new YP2CSConverter();
private static int instanceID = new Random().Next(0, int.MaxValue); // Unique number to use on our compiled files
private static UInt64 scriptCompileCounter = 0; // And a counter
public ScriptEngine m_scriptEngine;
public Compiler(ScriptEngine scriptEngine)
{
m_scriptEngine = scriptEngine;
ReadConfig();
}
public bool in_startup = true;
public void ReadConfig()
{
// Get some config
WriteScriptSourceToDebugFile = m_scriptEngine.ScriptConfigSource.GetBoolean("WriteScriptSourceToDebugFile", true);
CompileWithDebugInformation = m_scriptEngine.ScriptConfigSource.GetBoolean("CompileWithDebugInformation", true);
// CleanUpOldScriptsOnStartup = m_scriptEngine.ScriptConfigSource.GetBoolean("CleanUpOldScriptsOnStartup", true);
// Get file prefix from scriptengine name and make it file system safe:
FilePrefix = m_scriptEngine.ScriptEngineName;
foreach (char c in Path.GetInvalidFileNameChars())
{
FilePrefix = FilePrefix.Replace(c, '_');
}
// First time we start? Delete old files
if (in_startup)
{
in_startup = false;
DeleteOldFiles();
}
// Map name and enum type of our supported languages
LanguageMapping.Add(enumCompileType.cs.ToString(), enumCompileType.cs);
LanguageMapping.Add(enumCompileType.vb.ToString(), enumCompileType.vb);
LanguageMapping.Add(enumCompileType.lsl.ToString(), enumCompileType.lsl);
LanguageMapping.Add(enumCompileType.js.ToString(), enumCompileType.js);
LanguageMapping.Add(enumCompileType.yp.ToString(), enumCompileType.yp);
// Allowed compilers
string allowComp = m_scriptEngine.ScriptConfigSource.GetString("AllowedCompilers", "lsl,cs,vb,js,yp");
AllowedCompilers.Clear();
#if DEBUG
m_scriptEngine.Log.Debug("[" + m_scriptEngine.ScriptEngineName + "]: Allowed languages: " + allowComp);
#endif
foreach (string strl in allowComp.Split(','))
{
string strlan = strl.Trim(" \t".ToCharArray()).ToLower();
if (!LanguageMapping.ContainsKey(strlan))
{
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: Config error. Compiler is unable to recognize language type \"" + strlan + "\" specified in \"AllowedCompilers\".");
}
else
{
#if DEBUG
//m_scriptEngine.Log.Debug("[" + m_scriptEngine.ScriptEngineName + "]: Config OK. Compiler recognized language type \"" + strlan + "\" specified in \"AllowedCompilers\".");
#endif
}
AllowedCompilers.Add(strlan, true);
}
if (AllowedCompilers.Count == 0)
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: Config error. Compiler could not recognize any language in \"AllowedCompilers\". Scripts will not be executed!");
// Default language
string defaultCompileLanguage = m_scriptEngine.ScriptConfigSource.GetString("DefaultCompileLanguage", "lsl").ToLower();
// Is this language recognized at all?
if (!LanguageMapping.ContainsKey(defaultCompileLanguage))
{
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: " +
"Config error. Default language \"" + defaultCompileLanguage + "\" specified in \"DefaultCompileLanguage\" is not recognized as a valid language. Changing default to: \"lsl\".");
defaultCompileLanguage = "lsl";
}
// Is this language in allow-list?
if (!AllowedCompilers.ContainsKey(defaultCompileLanguage))
{
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: " +
"Config error. Default language \"" + defaultCompileLanguage + "\"specified in \"DefaultCompileLanguage\" is not in list of \"AllowedCompilers\". Scripts may not be executed!");
}
else
{
#if DEBUG
// m_scriptEngine.Log.Debug("[" + m_scriptEngine.ScriptEngineName + "]: " +
// "Config OK. Default language \"" + defaultCompileLanguage + "\" specified in \"DefaultCompileLanguage\" is recognized as a valid language.");
#endif
// LANGUAGE IS IN ALLOW-LIST
DefaultCompileLanguage = LanguageMapping[defaultCompileLanguage];
}
// We now have an allow-list, a mapping list, and a default language
}
/// <summary>
/// Delete old script files
/// </summary>
private void DeleteOldFiles()
{
// CREATE FOLDER IF IT DOESNT EXIST
if (!Directory.Exists(ScriptEnginesPath))
{
try
{
Directory.CreateDirectory(ScriptEnginesPath);
}
catch (Exception ex)
{
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: Exception trying to create ScriptEngine directory \"" + ScriptEnginesPath + "\": " + ex.ToString());
}
}
foreach (string file in Directory.GetFiles(ScriptEnginesPath))
{
//m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: FILE FOUND: " + file);
if (file.ToLower().StartsWith(FilePrefix + "_compiled_") ||
file.ToLower().StartsWith(FilePrefix + "_source_"))
{
try
{
File.Delete(file);
}
catch (Exception ex)
{
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: Exception trying delete old script file \"" + file + "\": " + ex.ToString());
}
}
}
}
/// <summary>
/// Converts script from LSL to CS and calls CompileFromCSText
/// </summary>
/// <param name="Script">LSL script</param>
/// <returns>Filename to .dll assembly</returns>
public string PerformScriptCompile(string Script)
{
enumCompileType l = DefaultCompileLanguage;
if (Script.StartsWith("//c#", true, CultureInfo.InvariantCulture))
l = enumCompileType.cs;
if (Script.StartsWith("//vb", true, CultureInfo.InvariantCulture))
{
l = enumCompileType.vb;
// We need to remove //vb, it won't compile with that
Script = Script.Substring(4, Script.Length - 4);
}
if (Script.StartsWith("//lsl", true, CultureInfo.InvariantCulture))
l = enumCompileType.lsl;
if (Script.StartsWith("//js", true, CultureInfo.InvariantCulture))
l = enumCompileType.js;
if (Script.StartsWith("//yp", true, CultureInfo.InvariantCulture))
l = enumCompileType.yp;
if (!AllowedCompilers.ContainsKey(l.ToString()))
{
// Not allowed to compile to this language!
string errtext = String.Empty;
errtext += "The compiler for language \"" + l.ToString() + "\" is not in list of allowed compilers. Script will not be executed!";
throw new Exception(errtext);
}
string compileScript = Script;
if (l == enumCompileType.lsl)
{
// Its LSL, convert it to C#
compileScript = LSL_Converter.Convert(Script);
m_positionMap = LSL_Converter.PositionMap;
l = enumCompileType.cs;
}
if (l == enumCompileType.yp)
{
// Its YP, convert it to C#
compileScript = YP_Converter.Convert(Script);
// We have our own processor now
//l = enumCompileType.cs;
}
// Insert additional assemblies here
//ADAM: Disabled for the moment until it's working right.
bool enableCommanderLSL = false;
if (enableCommanderLSL == true && ((l == enumCompileType.cs) || (l == enumCompileType.yp)))
{
foreach (KeyValuePair<string,
ICommander> com
in m_scriptEngine.World.GetCommanders())
{
compileScript = com.Value.GenerateRuntimeAPI() + compileScript;
}
}
// End of insert
switch (l)
{
case enumCompileType.cs:
compileScript = CreateCSCompilerScript(compileScript);
break;
case enumCompileType.vb:
compileScript = CreateVBCompilerScript(compileScript);
break;
case enumCompileType.js:
compileScript = CreateJSCompilerScript(compileScript);
break;
case enumCompileType.yp:
compileScript = CreateYPCompilerScript(compileScript);
break;
}
m_log.Debug("[ScriptEngine.DotNetEngine]: Preparing to compile the following LSL to C# translated code");
m_log.Debug("");
m_log.Debug(compileScript);
return CompileFromDotNetText(compileScript, l);
}
private static string CreateJSCompilerScript(string compileScript)
{
compileScript = String.Empty +
"import OpenSim.Region.ScriptEngine.Shared; import System.Collections.Generic;\r\n" +
"package SecondLife {\r\n" +
"class Script extends OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass { \r\n" +
compileScript +
"} }\r\n";
return compileScript;
}
private static string CreateCSCompilerScript(string compileScript)
{
compileScript = String.Empty +
"using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\r\n" +
String.Empty + "namespace SecondLife { " +
String.Empty + "public class Script : OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass { \r\n" +
@"public Script() { } " +
compileScript +
"} }\r\n";
return compileScript;
}
private static string CreateYPCompilerScript(string compileScript)
{
compileScript = String.Empty +
"using OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog; " +
"using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\r\n" +
String.Empty + "namespace SecondLife { " +
String.Empty + "public class Script : OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass { \r\n" +
//@"public Script() { } " +
@"static OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog.YP YP=null; " +
@"public Script() { YP= new OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog.YP(); } "+
compileScript +
"} }\r\n";
return compileScript;
}
private static string CreateVBCompilerScript(string compileScript)
{
compileScript = String.Empty +
"Imports OpenSim.Region.ScriptEngine.Shared: Imports System.Collections.Generic: " +
String.Empty + "NameSpace SecondLife:" +
String.Empty + "Public Class Script: Inherits OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass: " +
"\r\nPublic Sub New()\r\nEnd Sub: " +
compileScript +
":End Class :End Namespace\r\n";
return compileScript;
}
/// <summary>
/// Compile .NET script to .Net assembly (.dll)
/// </summary>
/// <param name="Script">CS script</param>
/// <returns>Filename to .dll assembly</returns>
internal string CompileFromDotNetText(string Script, enumCompileType lang)
{
string ext = "." + lang.ToString();
// Output assembly name
scriptCompileCounter++;
string OutFile =
Path.Combine("ScriptEngines",
FilePrefix + "_compiled_" + instanceID.ToString() + "_" + scriptCompileCounter.ToString() + ".dll");
#if DEBUG
m_scriptEngine.Log.Debug("[" + m_scriptEngine.ScriptEngineName + "]: Starting compile of \"" + OutFile + "\".");
#endif
try
{
File.Delete(OutFile);
}
catch (Exception e) // NOTLEGIT - Should be just catching FileIOException
{
//m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: Unable to delete old existring script-file before writing new. Compile aborted: " + e.ToString());
throw new Exception("Unable to delete old existring script-file before writing new. Compile aborted: " + e.ToString());
}
//string OutFile = Path.Combine("ScriptEngines", "SecondLife.Script.dll");
// DEBUG - write source to disk
if (WriteScriptSourceToDebugFile)
{
string srcFileName = FilePrefix + "_source_" + Path.GetFileNameWithoutExtension(OutFile) + ext;
try
{
File.WriteAllText(
Path.Combine("ScriptEngines", srcFileName),
Script);
}
catch (Exception ex) // NOTLEGIT - Should be just catching FileIOException
{
m_scriptEngine.Log.Error("[" + m_scriptEngine.ScriptEngineName + "]: Exception while trying to write script source to file \"" + srcFileName + "\": " + ex.ToString());
}
}
// Do actual compile
CompilerParameters parameters = new CompilerParameters();
parameters.IncludeDebugInformation = true;
// Add all available assemblies
// foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies())
// {
// Console.WriteLine("Adding assembly: " + asm.Location);
// parameters.ReferencedAssemblies.Add(asm.Location);
// }
string rootPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory);
string rootPathSE = Path.GetDirectoryName(GetType().Assembly.Location);
//Console.WriteLine("Assembly location: " + rootPath);
parameters.ReferencedAssemblies.Add(Path.Combine(rootPath, "OpenSim.Region.ScriptEngine.Shared.dll"));
parameters.ReferencedAssemblies.Add(Path.Combine(rootPath, "OpenSim.Region.ScriptEngine.Shared.Api.Runtime.dll"));
if (lang == enumCompileType.yp)
{
parameters.ReferencedAssemblies.Add(Path.Combine(rootPath, "OpenSim.Region.ScriptEngine.Shared.YieldProlog.dll"));
}
//parameters.ReferencedAssemblies.Add("OpenSim.Region.Environment");
parameters.GenerateExecutable = false;
parameters.OutputAssembly = OutFile;
parameters.IncludeDebugInformation = CompileWithDebugInformation;
//parameters.WarningLevel = 1; // Should be 4?
parameters.TreatWarningsAsErrors = false;
CompilerResults results;
switch (lang)
{
case enumCompileType.vb:
results = VBcodeProvider.CompileAssemblyFromSource(parameters, Script);
break;
case enumCompileType.cs:
results = CScodeProvider.CompileAssemblyFromSource(parameters, Script);
break;
case enumCompileType.js:
results = JScodeProvider.CompileAssemblyFromSource(parameters, Script);
break;
case enumCompileType.yp:
results = YPcodeProvider.CompileAssemblyFromSource(parameters, Script);
break;
default:
throw new Exception("Compiler is not able to recongnize language type \"" + lang.ToString() + "\"");
}
// Check result
// Go through errors
//
// WARNINGS AND ERRORS
//
if (results.Errors.Count > 0)
{
string errtext = String.Empty;
foreach (CompilerError CompErr in results.Errors)
{
KeyValuePair<int, int> lslPos;
try
{
lslPos = m_positionMap[new KeyValuePair<int, int>(CompErr.Line, CompErr.Column)];
}
catch (KeyNotFoundException) // we don't have this line/column mapped
{
m_scriptEngine.Log.Debug(String.Format("[{0}]: Lookup of C# line {1}, column {2} failed.", m_scriptEngine.ScriptEngineName, CompErr.Line, CompErr.Column));
lslPos = new KeyValuePair<int, int>(-CompErr.Line, -CompErr.Column);
}
// The Second Life viewer's script editor begins
// countingn lines and columns at 0, so we subtract 1.
errtext += String.Format("Line {0}, column {1}, Error Number: {2}, '{3}'\r\n", lslPos.Key - 1, lslPos.Value - 1, CompErr.ErrorNumber, CompErr.ErrorText);
//errtext += "Line number " + (CompErr.Line - LinesToRemoveOnError) +
// ", Error Number: " + CompErr.ErrorNumber +
// ", '" + CompErr.ErrorText + "'\r\n";
}
Console.WriteLine("[COMPILER ERROR]:" + errtext);
if (!File.Exists(OutFile))
{
throw new Exception(errtext);
}
}
//
// NO ERRORS, BUT NO COMPILED FILE
//
if (!File.Exists(OutFile))
{
string errtext = String.Empty;
errtext += "No compile error. But not able to locate compiled file.";
throw new Exception(errtext);
}
return OutFile;
}
}
}

183
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/LSL2CSCodeTransformer.cs
View File

@ -1,183 +0,0 @@
/*
* 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 = null;
/// <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
if (null == m_datatypeLSL2OpenSim)
{
m_datatypeLSL2OpenSim = new Dictionary<string, string>();
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");
}
}
/// <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];
for (int i = 0; i < s.kids.Count; i++)
{
if (!(s is Assignment || s is ArgumentDeclarationList) && s.kids[i] is Declaration)
AddImplicitInitialization(s, i);
TransformNode((SYMBOL) s.kids[i]);
}
}
/// <summary>
/// Replaces an instance of the node at s.kids[didx] with an assignment
/// node. The assignment node has the Declaration node on the left hand
/// side and a default initializer on the right hand side.
/// </summary>
/// <param name="s">
/// The node containing the Declaration node that needs replacing.
/// </param>
/// <param name="didx">Index of the Declaration node to replace.</param>
private void AddImplicitInitialization(SYMBOL s, int didx)
{
// We take the kids for a while to play with them.
int sKidSize = s.kids.Count;
object [] sKids = new object[sKidSize];
for (int i = 0; i < sKidSize; i++)
sKids[i] = s.kids.Pop();
// The child to be changed.
Declaration currentDeclaration = (Declaration) sKids[didx];
// We need an assignment node.
Assignment newAssignment = new Assignment(currentDeclaration.yyps,
currentDeclaration,
GetZeroConstant(currentDeclaration.yyps, currentDeclaration.Datatype),
"=");
sKids[didx] = newAssignment;
// Put the kids back where they belong.
for (int i = 0; i < sKidSize; i++)
s.kids.Add(sKids[i]);
}
/// <summary>
/// Generates the node structure required to generate a default
/// initialization.
/// </summary>
/// <param name="p">
/// Tools.Parser instance to use when instantiating nodes.
/// </param>
/// <param name="constantType">String describing the datatype.</param>
/// <returns>
/// A SYMBOL node conaining the appropriate structure for intializing a
/// constantType.
/// </returns>
private SYMBOL GetZeroConstant(Parser p, string constantType)
{
switch (constantType)
{
case "integer":
return new Constant(p, constantType, "0");
case "float":
return new Constant(p, constantType, "0.0");
case "string":
case "key":
return new Constant(p, constantType, "");
case "list":
ArgumentList al = new ArgumentList(p);
return new ListConstant(p, al);
case "vector":
Constant vca = new Constant(p, "float", "0.0");
Constant vcb = new Constant(p, "float", "0.0");
Constant vcc = new Constant(p, "float", "0.0");
ConstantExpression vcea = new ConstantExpression(p, vca);
ConstantExpression vceb = new ConstantExpression(p, vcb);
ConstantExpression vcec = new ConstantExpression(p, vcc);
return new VectorConstant(p, vcea, vceb, vcec);
case "rotation":
Constant rca = new Constant(p, "float", "0.0");
Constant rcb = new Constant(p, "float", "0.0");
Constant rcc = new Constant(p, "float", "0.0");
Constant rcd = new Constant(p, "float", "0.0");
ConstantExpression rcea = new ConstantExpression(p, rca);
ConstantExpression rceb = new ConstantExpression(p, rcb);
ConstantExpression rcec = new ConstantExpression(p, rcc);
ConstantExpression rced = new ConstantExpression(p, rcd);
return new RotationConstant(p, rcea, rceb, rcec, rced);
default:
return null; // this will probably break stuff
}
}
}
}

116
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/YP2CSConverter.cs
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@ -1,116 +0,0 @@
/*
* 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.IO;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL
{
public class YP2CSConverter
{
public YP2CSConverter()
{
}
public string Convert(string Script)
{
string CS_code = GenCode(Script);
return CS_code;
}
static string GenCode(string myCode)
{
Variable TermList = new Variable();
Variable FunctionCode = new Variable();
string CS_code = "";
int cs_pointer = myCode.IndexOf("\n//cs");
if (cs_pointer > 0)
{
CS_code = myCode.Substring(cs_pointer); // CS code comes after
myCode = myCode.Substring(0, cs_pointer);
}
myCode.Replace("//yp", "%YPCode");
StringWriter myCS_SW = new StringWriter();
StringReader myCode_SR = new StringReader(" yp_nop_header_nop. \n "+myCode + "\n");
YP.see(myCode_SR);
YP.tell(myCS_SW);
//Console.WriteLine("Mycode\n ===================================\n" + myCode+"\n");
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
foreach (bool l1 in Parser.parseInput(TermList))
{
foreach (bool l2 in YPCompiler.makeFunctionPseudoCode(TermList, FunctionCode))
{
// ListPair VFC = new ListPair(FunctionCode, new Variable());
//Console.WriteLine("-------------------------")
//Console.WriteLine(FunctionCode.ToString())
//Console.WriteLine("-------------------------")
YPCompiler.convertFunctionCSharp(FunctionCode);
//YPCompiler.convertStringCodesCSharp(VFC);
}
}
#pragma warning restore 0168
YP.seen();
myCS_SW.Close();
YP.told();
StringBuilder bu = myCS_SW.GetStringBuilder();
string finalcode = "//YPEncoded\n" + bu.ToString();
// FIX script events (we're in the same script)
// 'YP.script_event(Atom.a(@"sayit"),' ==> 'sayit('
finalcode = Regex.Replace(finalcode,
@"YP.script_event\(Atom.a\(\@\""(.*?)""\)\,",
@"this.$1(",
RegexOptions.Compiled | RegexOptions.Singleline);
finalcode = Regex.Replace(finalcode,
@"YP.script_event\(Atom.a\(\""(.*?)""\)\,",
@"this.$1(",
RegexOptions.Compiled | RegexOptions.Singleline);
finalcode = Regex.Replace(finalcode,
@" static ",
@" ",
RegexOptions.Compiled | RegexOptions.Singleline);
finalcode = CS_code+"\n\r"+ finalcode;
finalcode = Regex.Replace(finalcode,
@"PrologCallback",
@"public IEnumerable<bool> ",
RegexOptions.Compiled | RegexOptions.Singleline);
return finalcode;
}
}
}

18447
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/lsl.lexer.cs
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11001
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/lsl.parser.cs
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218
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/Atom.cs
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@ -1,218 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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.Text;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public class Atom : IUnifiable
{
private static Dictionary<string, Atom> _atomStore = new Dictionary<string, Atom>();
public readonly string _name;
public readonly Atom _module;
/// <summary>
/// You should not call this constructor, but use Atom.a instead.
/// </summary>
/// <param name="name"></param>
/// <param name="module"></param>
private Atom(string name, Atom module)
{
_name = name;
_module = module;
}
/// <summary>
/// Return the unique Atom object for name where module is null. You should use this to create
/// an Atom instead of calling the Atom constructor.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static Atom a(string name)
{
Atom atom;
if (!_atomStore.TryGetValue(name, out atom))
{
atom = new Atom(name, null);
_atomStore[name] = atom;
}
return atom;
}
/// <summary>
/// Return an Atom object with the name and module. If module is null or Atom.NIL,
/// this behaves like Atom.a(name) and returns the unique object where the module is null.
/// If module is not null or Atom.NIL, this may or may not be the same object as another Atom
/// with the same name and module.
/// </summary>
/// <param name="name"></param>
/// <param name="module"></param>
/// <returns></returns>
public static Atom a(string name, Atom module)
{
if (module == null || module == Atom.NIL)
return a(name);
return new Atom(name, module);
}
/// <summary>
/// If Obj is an Atom unify its _module with Module. If the Atom's _module is null, use Atom.NIL.
/// </summary>
/// <param name="Atom"></param>
/// <param name="Module"></param>
/// <returns></returns>
public static IEnumerable<bool> module(object Obj, object Module)
{
Obj = YP.getValue(Obj);
if (Obj is Atom)
{
if (((Atom)Obj)._module == null)
return YP.unify(Module, Atom.NIL);
else
return YP.unify(Module, ((Atom)Obj)._module);
}
return YP.fail();
}
public static readonly Atom NIL = Atom.a("[]");
public static readonly Atom DOT = Atom.a(".");
public static readonly Atom F = Atom.a("f");
public static readonly Atom SLASH = Atom.a("/");
public static readonly Atom HAT = Atom.a("^");
public static readonly Atom RULE = Atom.a(":-");
public IEnumerable<bool> unify(object arg)
{
arg = YP.getValue(arg);
if (arg is Atom)
return Equals(arg) ? YP.succeed() : YP.fail();
else if (arg is Variable)
return ((Variable)arg).unify(this);
else
return YP.fail();
}
public void addUniqueVariables(List<Variable> variableSet)
{
// Atom does not contain variables.
}
public object makeCopy(Variable.CopyStore copyStore)
{
// Atom does not contain variables that need to be copied.
return this;
}
public bool termEqual(object term)
{
return Equals(YP.getValue(term));
}
public bool ground()
{
// Atom is always ground.
return true;
}
public override bool Equals(object obj)
{
if (obj is Atom)
{
if (_module == null && ((Atom)obj)._module == null)
// When _declaringClass is null, we always use an identical object from _atomStore.
return this == obj;
// Otherwise, ignore _declaringClass and do a normal string compare on the _name.
return _name == ((Atom)obj)._name;
}
return false;
}
public override string ToString()
{
return _name;
}
public override int GetHashCode()
{
// Debug: need to check _declaringClass.
return _name.GetHashCode();
}
public string toQuotedString()
{
if (_name.Length == 0)
return "''";
else if (this == Atom.NIL)
return "[]";
StringBuilder result = new StringBuilder(_name.Length);
bool useQuotes = false;
foreach (char c in _name)
{
int cInt = (int)c;
if (c == '\'')
{
result.Append("''");
useQuotes = true;
}
else if (c == '_' || cInt >= (int)'a' && cInt <= (int)'z' ||
cInt >= (int)'A' && cInt <= (int)'Z' || cInt >= (int)'0' && cInt <= (int)'9')
result.Append(c);
else
{
// Debug: Need to handle non-printable chars.
result.Append(c);
useQuotes = true;
}
}
if (!useQuotes && (int)_name[0] >= (int)'a' && (int)_name[0] <= (int)'z')
return result.ToString();
else
{
// Surround in single quotes.
result.Append('\'');
return "'" + result;
}
}
/// <summary>
/// Return true if _name is lexicographically less than atom._name.
/// </summary>
/// <param name="atom"></param>
/// <returns></returns>
public bool lessThan(Atom atom)
{
return _name.CompareTo(atom._name) < 0;
}
}
}

239
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/BagofAnswers.cs
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@ -1,239 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
using System.Collections.Generic;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
/// <summary>
/// A BagofAnswers holds answers for bagof and setof.
/// </summary>
public class BagofAnswers
{
private object _template;
private Variable[] _freeVariables;
private Dictionary<object[], List<object>> _bagForFreeVariables;
private List<object> _findallBagArray;
private static TermArrayEqualityComparer _termArrayEqualityComparer =
new TermArrayEqualityComparer();
/// <summary>
/// To get the free variables, split off any existential qualifiers from Goal such as the X in
/// "X ^ f(Y)", get the set of unbound variables in Goal that are not qualifiers, then remove
/// the unbound variables that are qualifiers as well as the unbound variables in Template.
/// </summary>
/// <param name="Template"></param>
/// <param name="Goal"></param>
public BagofAnswers(object Template, object Goal)
{
_template = Template;
// First get the set of variables that are not free variables.
List<Variable> variableSet = new List<Variable>();
YP.addUniqueVariables(Template, variableSet);
object UnqualifiedGoal = YP.getValue(Goal);
while (UnqualifiedGoal is Functor2 && ((Functor2)UnqualifiedGoal)._name == Atom.HAT)
{
YP.addUniqueVariables(((Functor2)UnqualifiedGoal)._arg1, variableSet);
UnqualifiedGoal = YP.getValue(((Functor2)UnqualifiedGoal)._arg2);
}
// Remember how many non-free variables there are so we can find the unique free variables
// that are added.
int nNonFreeVariables = variableSet.Count;
YP.addUniqueVariables(UnqualifiedGoal, variableSet);
int nFreeVariables = variableSet.Count - nNonFreeVariables;
if (nFreeVariables == 0)
{
// There were no free variables added, so we won't waste time with _bagForFreeVariables.
_freeVariables = null;
_findallBagArray = new List<object>();
}
else
{
// Copy the free variables.
_freeVariables = new Variable[nFreeVariables];
for (int i = 0; i < nFreeVariables; ++i)
_freeVariables[i] = variableSet[i + nNonFreeVariables];
_bagForFreeVariables = new Dictionary<object[], List<object>>(_termArrayEqualityComparer);
}
}
public void add()
{
if (_freeVariables == null)
// The goal has bound the values in _template but we don't bother with _freeVariables.
_findallBagArray.Add(YP.makeCopy(_template, new Variable.CopyStore()));
else
{
// The goal has bound the values in _template and _freeVariables.
// Find the entry for this set of _freeVariables values.
object[] freeVariableValues = new object[_freeVariables.Length];
for (int i = 0; i < _freeVariables.Length; ++i)
freeVariableValues[i] = YP.getValue(_freeVariables[i]);
List<object> bagArray;
if (!_bagForFreeVariables.TryGetValue(freeVariableValues, out bagArray))
{
bagArray = new List<object>();
_bagForFreeVariables[freeVariableValues] = bagArray;
}
// Now copy the template and add to the bag for the freeVariables values.
bagArray.Add(YP.makeCopy(_template, new Variable.CopyStore()));
}
}
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
/// <summary>
/// For each result, unify the _freeVariables and unify bagArrayVariable with the associated bag.
/// </summary>
/// <param name="bagArrayVariable">this is unified with the List<object> of matches for template that
/// corresponds to the bindings for freeVariables. Be very careful: this does not unify with a Prolog
/// list.</param>
/// <returns></returns>
public IEnumerable<bool> resultArray(Variable bagArrayVariable)
{
if (_freeVariables == null)
{
// No unbound free variables, so we only filled one bag. If empty, bagof fails.
if (_findallBagArray.Count > 0)
{
foreach (bool l1 in bagArrayVariable.unify(_findallBagArray))
yield return false;
}
}
else
{
foreach (KeyValuePair<object[], List<object>> valuesAndBag in _bagForFreeVariables)
{
foreach (bool l1 in YP.unifyArrays(_freeVariables, valuesAndBag.Key))
{
foreach (bool l2 in bagArrayVariable.unify(valuesAndBag.Value))
yield return false;
}
// Debug: Should we free memory of the answers already returned?
}
}
}
/// <summary>
/// For each result, unify the _freeVariables and unify Bag with the associated bag.
/// </summary>
/// <param name="Bag"></param>
/// <returns></returns>
public IEnumerable<bool> result(object Bag)
{
Variable bagArrayVariable = new Variable();
foreach (bool l1 in resultArray(bagArrayVariable))
{
foreach (bool l2 in YP.unify(Bag, ListPair.make((List<object>)bagArrayVariable.getValue())))
yield return false;
}
}
/// <summary>
/// For each result, unify the _freeVariables and unify Bag with the associated bag which is sorted
/// with duplicates removed, as in setof.
/// </summary>
/// <param name="Bag"></param>
/// <returns></returns>
public IEnumerable<bool> resultSet(object Bag)
{
Variable bagArrayVariable = new Variable();
foreach (bool l1 in resultArray(bagArrayVariable))
{
List<object> bagArray = (List<object>)bagArrayVariable.getValue();
YP.sortArray(bagArray);
foreach (bool l2 in YP.unify(Bag, ListPair.makeWithoutRepeatedTerms(bagArray)))
yield return false;
}
}
public static IEnumerable<bool> bagofArray
(object Template, object Goal, IEnumerable<bool> goalIterator, Variable bagArrayVariable)
{
BagofAnswers bagOfAnswers = new BagofAnswers(Template, Goal);
foreach (bool l1 in goalIterator)
bagOfAnswers.add();
return bagOfAnswers.resultArray(bagArrayVariable);
}
public static IEnumerable<bool> bagof
(object Template, object Goal, IEnumerable<bool> goalIterator, object Bag)
{
BagofAnswers bagOfAnswers = new BagofAnswers(Template, Goal);
foreach (bool l1 in goalIterator)
bagOfAnswers.add();
return bagOfAnswers.result(Bag);
}
public static IEnumerable<bool> setof
(object Template, object Goal, IEnumerable<bool> goalIterator, object Bag)
{
BagofAnswers bagOfAnswers = new BagofAnswers(Template, Goal);
foreach (bool l1 in goalIterator)
bagOfAnswers.add();
return bagOfAnswers.resultSet(Bag);
}
#pragma warning restore 0168
/// <summary>
/// A TermArrayEqualityComparer implements IEqualityComparer to compare two object arrays using YP.termEqual.
/// </summary>
private class TermArrayEqualityComparer : IEqualityComparer<object[]>
{
public bool Equals(object[] array1, object[] array2)
{
if (array1.Length != array2.Length)
return false;
for (int i = 0; i < array1.Length; ++i)
{
if (!YP.termEqual(array1[i], array2[i]))
return false;
}
return true;
}
public int GetHashCode(object[] array)
{
int hashCode = 0;
for (int i = 0; i < array.Length; ++i)
hashCode ^= array[i].GetHashCode();
return hashCode;
}
}
}
}

108
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/FindallAnswers.cs
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/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
using System.Collections.Generic;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
/// <summary>
/// A FindallAnswers holds answers for findall.
/// </summary>
public class FindallAnswers
{
private object _template;
private List<object> _bagArray;
public FindallAnswers(object Template)
{
_template = Template;
_bagArray = new List<object>();
}
public void add()
{
_bagArray.Add(YP.makeCopy(_template, new Variable.CopyStore()));
}
public List<object> resultArray()
{
return _bagArray;
}
/// <summary>
/// Unify Bag with the result. This frees the internal answers, so you can only call this once.
/// </summary>
/// <param name="Bag"></param>
/// <returns></returns>
public IEnumerable<bool> result(object Bag)
{
object result = ListPair.make(_bagArray);
// Try to free the memory.
_bagArray = null;
return YP.unify(Bag, result);
}
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
/// <summary>
/// This is a simplified findall when the goal is a single call.
/// </summary>
/// <param name="Template"></param>
/// <param name="goal"></param>
/// <param name="Bag"></param>
/// <returns></returns>
public static IEnumerable<bool> findall(object Template, IEnumerable<bool> goal, object Bag)
{
FindallAnswers findallAnswers = new FindallAnswers(Template);
foreach (bool l1 in goal)
findallAnswers.add();
return findallAnswers.result(Bag);
}
/// <summary>
/// Like findall, except return an array of the results.
/// </summary>
/// <param name="template"></param>
/// <param name="goal"></param>
/// <returns></returns>
public static List<object> findallArray(object Template, IEnumerable<bool> goal)
{
FindallAnswers findallAnswers = new FindallAnswers(Template);
foreach (bool l1 in goal)
findallAnswers.add();
return findallAnswers.resultArray();
}
#pragma warning restore 0168
}
}

196
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/Functor.cs
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@ -1,196 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public class Functor : IUnifiable
{
public readonly Atom _name;
public readonly object[] _args;
public Functor(Atom name, object[] args)
{
if (args.Length <= 3)
{
if (args.Length == 0)
throw new Exception("For arity 0 functor, just use name as an Atom");
else if (args.Length == 1)
throw new Exception("For arity 1 functor, use Functor1");
else if (args.Length == 2)
throw new Exception("For arity 2 functor, use Functor2");
else if (args.Length == 3)
throw new Exception("For arity 3 functor, use Functor3");
else
// (This shouldn't happen, but include it for completeness.
throw new Exception("Cannot create a Functor of arity " + args.Length);
}
_name = name;
_args = args;
}
public Functor(string name, object[] args)
: this(Atom.a(name), args)
{
}
/// <summary>
/// Return an Atom, Functor1, Functor2, Functor3 or Functor depending on the
/// length of args.
/// Note that this is different than the Functor constructor which requires
/// the length of args to be greater than 3.
/// </summary>
/// <param name="name"></param>
/// <param name="args"></param>
/// <returns></returns>
public static object make(Atom name, object[] args)
{
if (args.Length <= 0)
return name;
else if (args.Length == 1)
return new Functor1(name, args[0]);
else if (args.Length == 2)
return new Functor2(name, args[0], args[1]);
else if (args.Length == 3)
return new Functor3(name, args[0], args[1], args[2]);
else
return new Functor(name, args);
}
/// <summary>
/// Call the main make, first converting name to an Atom.
/// </summary>
/// <param name="name"></param>
/// <param name="args"></param>
/// <returns></returns>
public static object make(string name, object[] args)
{
return make(Atom.a(name), args);
}
/// <summary>
/// If arg is another Functor, then succeed (yield once) if this and arg have the
/// same name and all functor args unify, otherwise fail (don't yield).
/// If arg is a Variable, then call its unify to unify with this.
/// Otherwise fail (don't yield).
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
public IEnumerable<bool> unify(object arg)
{
arg = YP.getValue(arg);
if (arg is Functor)
{
Functor argFunctor = (Functor)arg;
if (_name.Equals(argFunctor._name))
return YP.unifyArrays(_args, argFunctor._args);
else
return YP.fail();
}
else if (arg is Variable)
return ((Variable)arg).unify(this);
else
return YP.fail();
}
public override string ToString()
{
string result = _name + "(" + YP.getValue(_args[0]);
for (int i = 1; i < _args.Length; ++i)
result += ", " + YP.getValue(_args[i]);
result += ")";
return result;
}
public bool termEqual(object term)
{
term = YP.getValue(term);
if (term is Functor)
{
Functor termFunctor = (Functor)term;
if (_name.Equals(termFunctor._name) && _args.Length == termFunctor._args.Length)
{
for (int i = 0; i < _args.Length; ++i)
{
if (!YP.termEqual(_args[i], termFunctor._args[i]))
return false;
}
return true;
}
}
return false;
}
public bool lessThan(Functor functor)
{
// Do the equal check first since it is faster.
if (!_name.Equals(functor._name))
return _name.lessThan(functor._name);
if (_args.Length != functor._args.Length)
return _args.Length < functor._args.Length;
for (int i = 0; i < _args.Length; ++i)
{
if (!YP.termEqual(_args[i], functor._args[i]))
return YP.termLessThan(_args[i], functor._args[i]);
}
return false;
}
public bool ground()
{
for (int i = 0; i < _args.Length; ++i)
{
if (!YP.ground(_args[i]))
return false;
}
return true;
}
public void addUniqueVariables(List<Variable> variableSet)
{
for (int i = 0; i < _args.Length; ++i)
YP.addUniqueVariables(_args[i], variableSet);
}
public object makeCopy(Variable.CopyStore copyStore)
{
object[] argsCopy = new object[_args.Length];
for (int i = 0; i < _args.Length; ++i)
argsCopy[i] = YP.makeCopy(_args[i], copyStore);
return new Functor(_name, argsCopy);
}
}
}

124
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@ -1,124 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public class Functor1 : IUnifiable
{
public readonly Atom _name;
public readonly object _arg1;
public Functor1(Atom name, object arg1)
{
_name = name;
_arg1 = arg1;
}
public Functor1(string name, object arg1)
: this(Atom.a(name), arg1)
{
}
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
/// <summary>
/// If arg is another Functor1, then succeed (yield once) if this and arg have the
/// same name and the functor args unify, otherwise fail (don't yield).
/// If arg is a Variable, then call its unify to unify with this.
/// Otherwise fail (don't yield).
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
public IEnumerable<bool> unify(object arg)
{
arg = YP.getValue(arg);
if (arg is Functor1)
{
Functor1 argFunctor = (Functor1)arg;
if (_name.Equals(argFunctor._name))
{
foreach (bool l1 in YP.unify(_arg1, argFunctor._arg1))
yield return false;
}
}
else if (arg is Variable)
{
foreach (bool l1 in ((Variable)arg).unify(this))
yield return false;
}
}
#pragma warning restore 0168
public override string ToString()
{
return _name + "(" + YP.getValue(_arg1) + ")";
}
public bool termEqual(object term)
{
term = YP.getValue(term);
if (term is Functor1)
{
Functor1 termFunctor = (Functor1)term;
return _name.Equals(termFunctor._name) && YP.termEqual(_arg1, termFunctor._arg1);
}
return false;
}
public bool lessThan(Functor1 functor)
{
// Do the equal check first since it is faster.
if (!_name.Equals(functor._name))
return _name.lessThan(functor._name);
return YP.termLessThan(_arg1, functor._arg1);
}
public bool ground()
{
return YP.ground(_arg1);
}
public void addUniqueVariables(List<Variable> variableSet)
{
YP.addUniqueVariables(_arg1, variableSet);
}
public object makeCopy(Variable.CopyStore copyStore)
{
return new Functor1(_name, YP.makeCopy(_arg1, copyStore));
}
}
}

163
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@ -1,163 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public class Functor2 : IUnifiable
{
public readonly Atom _name;
public readonly object _arg1;
public readonly object _arg2;
public Functor2(Atom name, object arg1, object arg2)
{
_name = name;
_arg1 = arg1;
_arg2 = arg2;
}
public Functor2(string name, object arg1, object arg2)
: this(Atom.a(name), arg1, arg2)
{
}
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
/// If arg is another Functor2, then succeed (yield once) if this and arg have the
/// same name and all functor args unify, otherwise fail (don't yield).
/// If arg is a Variable, then call its unify to unify with this.
/// Otherwise fail (don't yield).
public IEnumerable<bool> unify(object arg)
{
arg = YP.getValue(arg);
if (arg is Functor2)
{
Functor2 argFunctor = (Functor2)arg;
if (_name.Equals(argFunctor._name))
{
foreach (bool l1 in YP.unify(_arg1, argFunctor._arg1))
{
foreach (bool l2 in YP.unify(_arg2, argFunctor._arg2))
yield return false;
}
}
}
else if (arg is Variable)
{
foreach (bool l1 in ((Variable)arg).unify(this))
yield return false;
}
}
#pragma warning restore 0168
public override string ToString()
{
if (_name == Atom.DOT)
return listPairToString(this);
else
return _name + "(" + YP.getValue(_arg1) + ", " + YP.getValue(_arg2) + ")";
}
public bool termEqual(object term)
{
term = YP.getValue(term);
if (term is Functor2)
{
Functor2 termFunctor = (Functor2)term;
return _name.Equals(termFunctor._name) && YP.termEqual(_arg1, termFunctor._arg1)
&& YP.termEqual(_arg2, termFunctor._arg2);
}
return false;
}
public bool lessThan(Functor2 functor)
{
// Do the equal check first since it is faster.
if (!_name.Equals(functor._name))
return _name.lessThan(functor._name);
if (!YP.termEqual(_arg1, functor._arg1))
return YP.termLessThan(_arg1, functor._arg1);
return YP.termLessThan(_arg2, functor._arg2);
}
public bool ground()
{
return YP.ground(_arg1) && YP.ground(_arg2);
}
public void addUniqueVariables(List<Variable> variableSet)
{
YP.addUniqueVariables(_arg1, variableSet);
YP.addUniqueVariables(_arg2, variableSet);
}
public object makeCopy(Variable.CopyStore copyStore)
{
return new Functor2(_name, YP.makeCopy(_arg1, copyStore),
YP.makeCopy(_arg2, copyStore));
}
private static string listPairToString(Functor2 listPair)
{
string result = "[";
while (true)
{
object head = YP.getValue(listPair._arg1);
object tail = YP.getValue(listPair._arg2);
if (tail == (object)Atom.NIL)
{
result += head;
break;
}
else if (tail is Functor2 && ((Functor2)tail)._name == Atom.DOT)
{
result += head + ", ";
listPair = (Functor2)tail;
// Loop again.
}
else
{
// The list is not terminated with NIL.
result += head + "|" + tail;
break;
}
}
result += "]";
return result;
}
}
}

141
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@ -1,141 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public class Functor3 : IUnifiable
{
public readonly Atom _name;
public readonly object _arg1;
public readonly object _arg2;
public readonly object _arg3;
public Functor3(Atom name, object arg1, object arg2, object arg3)
{
_name = name;
_arg1 = arg1;
_arg2 = arg2;
_arg3 = arg3;
}
public Functor3(string name, object arg1, object arg2, object arg3)
: this(Atom.a(name), arg1, arg2, arg3)
{
}
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
/// If arg is another Functor3, then succeed (yield once) if this and arg have the
/// same name and all functor args unify, otherwise fail (don't yield).
/// If arg is a Variable, then call its unify to unify with this.
/// Otherwise fail (don't yield).
public IEnumerable<bool> unify(object arg)
{
arg = YP.getValue(arg);
if (arg is Functor3)
{
Functor3 argFunctor = (Functor3)arg;
if (_name.Equals(argFunctor._name))
{
foreach (bool l1 in YP.unify(_arg1, argFunctor._arg1))
{
foreach (bool l2 in YP.unify(_arg2, argFunctor._arg2))
{
foreach (bool l3 in YP.unify(_arg3, argFunctor._arg3))
yield return false;
}
}
}
}
else if (arg is Variable)
{
foreach (bool l1 in ((Variable)arg).unify(this))
yield return false;
}
}
#pragma warning restore 0168
public override string ToString()
{
return _name + "(" + YP.getValue(_arg1) + ", " + YP.getValue(_arg2) + ", " +
YP.getValue(_arg3) + ")";
}
public bool termEqual(object term)
{
term = YP.getValue(term);
if (term is Functor3)
{
Functor3 termFunctor = (Functor3)term;
return _name.Equals(termFunctor._name) && YP.termEqual(_arg1, termFunctor._arg1)
&& YP.termEqual(_arg2, termFunctor._arg2)
&& YP.termEqual(_arg3, termFunctor._arg3);
}
return false;
}
public bool lessThan(Functor3 functor)
{
// Do the equal check first since it is faster.
if (!_name.Equals(functor._name))
return _name.lessThan(functor._name);
if (!YP.termEqual(_arg1, functor._arg1))
return YP.termLessThan(_arg1, functor._arg1);
if (!YP.termEqual(_arg2, functor._arg2))
return YP.termLessThan(_arg2, functor._arg2);
return YP.termLessThan(_arg3, functor._arg3);
}
public bool ground()
{
return YP.ground(_arg1) && YP.ground(_arg2) && YP.ground(_arg3);
}
public void addUniqueVariables(List<Variable> variableSet)
{
YP.addUniqueVariables(_arg1, variableSet);
YP.addUniqueVariables(_arg2, variableSet);
YP.addUniqueVariables(_arg3, variableSet);
}
public object makeCopy(Variable.CopyStore copyStore)
{
return new Functor3(_name, YP.makeCopy(_arg1, copyStore),
YP.makeCopy(_arg2, copyStore), YP.makeCopy(_arg3, copyStore));
}
}
}

385
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@ -1,385 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
using System.Collections.Generic;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
/// <summary>
/// An IndexedAnswers holds answers to a query based on the values of index arguments.
/// </summary>
public class IndexedAnswers : YP.IClause
{
private int _arity;
// addAnswer adds the answer here and indexes it later.
private List<object[]> _allAnswers = new List<object[]>();
// The key has the arity of answers with non-null values for each indexed arg. The value
// is a list of the matching answers. The signature is implicit in the pattern on non-null index args.
private Dictionary<HashedList, List<object[]>> _indexedAnswers =
new Dictionary<HashedList, List<object[]>>();
// Keeps track of whether we have started adding entries to _indexedAnswers for the signature.
private Dictionary<int, object> _gotAnswersForSignature = new Dictionary<int, object>();
private const int MAX_INDEX_ARGS = 31;
public IndexedAnswers(int arity)
{
_arity = arity;
}
/// <summary>
/// Append the answer to the list and update the indexes, if any.
/// Elements of answer must be ground, since arguments with unbound variables make this
/// into a dynamic rule which we don't index.
/// </summary>
/// <param name="answer"></param>
public void addAnswer(object[] answer)
{
addOrPrependAnswer(answer, false);
}
/// <summary>
/// Prepend the answer to the list and clear the indexes so that they must be re-computed
/// on the next call to match. (Only addAnswer will maintain the indexes while adding answers.)
/// Elements of answer must be ground, since arguments with unbound variables make this
/// into a dynamic rule which we don't index.
/// </summary>
/// <param name="answer"></param>
public void prependAnswer(object[] answer)
{
addOrPrependAnswer(answer, true);
}
/// <summary>
/// Do the work of addAnswer or prependAnswer.
/// </summary>
/// <param name="answer"></param>
private void addOrPrependAnswer(object[] answer, bool prepend)
{
if (answer.Length != _arity)
return;
// Store a copy of the answer array.
object[] answerCopy = new object[answer.Length];
Variable.CopyStore copyStore = new Variable.CopyStore();
for (int i = 0; i < answer.Length; ++i)
answerCopy[i] = YP.makeCopy(answer[i], copyStore);
if (copyStore.getNUniqueVariables() > 0)
throw new InvalidOperationException
("Elements of answer must be ground, but found " + copyStore.getNUniqueVariables() +
" unbound variables");
if (prepend)
{
_allAnswers.Insert(0, answerCopy);
clearIndexes();
}
else
{
_allAnswers.Add(answerCopy);
// If match has already indexed answers for a signature, we need to add
// this to the existing indexed answers.
foreach (int signature in _gotAnswersForSignature.Keys)
indexAnswerForSignature(answerCopy, signature);
}
}
private void indexAnswerForSignature(object[] answer, int signature)
{
// First find out which of the answer values can be used as an index.
object[] indexValues = new object[answer.Length];
for (int i = 0; i < answer.Length; ++i)
{
// We limit the number of indexed args in a 32-bit signature.
if (i >= MAX_INDEX_ARGS)
indexValues[i] = null;
else
indexValues[i] = getIndexValue(YP.getValue(answer[i]));
}
// We need an entry in indexArgs from indexValues for each 1 bit in signature.
HashedList indexArgs = new HashedList(indexValues.Length);
for (int i = 0; i < indexValues.Length; ++i)
{
if ((signature & (1 << i)) == 0)
indexArgs.Add(null);
else
{
if (indexValues[i] == null)
// The signature wants an index value here, but we don't have one so
// we can't add it as an answer for this signature.
return;
else
indexArgs.Add(indexValues[i]);
}
}
// Add the answer to the answers list for indexArgs, creating the entry if needed.
List<object[]> answers;
if (!_indexedAnswers.TryGetValue(indexArgs, out answers))
{
answers = new List<object[]>();
_indexedAnswers[indexArgs] = answers;
}
answers.Add(answer);
}
public IEnumerable<bool> match(object[] arguments)
{
if (arguments.Length != _arity)
yield break;
// Set up indexArgs, up to arg position MAX_INDEX_ARGS. The signature has a 1 bit for
// each non-null index arg.
HashedList indexArgs = new HashedList(arguments.Length);
bool gotAllIndexArgs = true;
int signature = 0;
for (int i = 0; i < arguments.Length; ++i)
{
object indexValue = null;
if (i < MAX_INDEX_ARGS)
{
// We limit the number of args in a 32-bit signature.
indexValue = getIndexValue(YP.getValue(arguments[i]));
if (indexValue != null)
signature += (1 << i);
}
if (indexValue == null)
gotAllIndexArgs = false;
indexArgs.Add(indexValue);
}
List<object[]> answers;
if (signature == 0)
// No index args, so we have to match from _allAnswers.
answers = _allAnswers;
else
{
if (!_gotAnswersForSignature.ContainsKey(signature))
{
// We need to create the entry in _indexedAnswers.
foreach (object[] answer in _allAnswers)
indexAnswerForSignature(answer, signature);
// Mark that we did this signature.
_gotAnswersForSignature[signature] = null;
}
if (!_indexedAnswers.TryGetValue(indexArgs, out answers))
yield break;
}
if (gotAllIndexArgs)
{
// All the arguments were already bound, so we don't need to do bindings.
yield return false;
yield break;
}
// Find matches in answers.
IEnumerator<bool>[] iterators = new IEnumerator<bool>[arguments.Length];
// Debug: If the caller asserts another answer into this same predicate during yield, the iterator
// over clauses will be corrupted. Should we take the time to copy answers?
foreach (object[] answer in answers)
{
bool gotMatch = true;
int nIterators = 0;
// Try to bind all the arguments.
for (int i = 0; i < arguments.Length; ++i)
{
if (indexArgs[i] != null)
// We already matched this argument by looking up _indexedAnswers.
continue;
IEnumerator<bool> iterator = YP.unify(arguments[i], answer[i]).GetEnumerator();
iterators[nIterators++] = iterator;
// MoveNext() is true if YP.unify succeeds.
if (!iterator.MoveNext())
{
gotMatch = false;
break;
}
}
try
{
if (gotMatch)
yield return false;
}
finally
{
// Manually finalize all the iterators.
for (int i = 0; i < nIterators; ++i)
iterators[i].Dispose();
}
}
}
public IEnumerable<bool> clause(object Head, object Body)
{
Head = YP.getValue(Head);
if (Head is Variable)
throw new PrologException("instantiation_error", "Head is an unbound variable");
object[] arguments = YP.getFunctorArgs(Head);
// We always match Head from _allAnswers, and the Body is Atom.a("true").
#pragma warning disable 0168
foreach (bool l1 in YP.unify(Body, Atom.a("true")))
{
// The caller can assert another answer into this same predicate during yield, so we have to
// make a copy of the answers.
foreach (object[] answer in _allAnswers.ToArray())
{
foreach (bool l2 in YP.unifyArrays(arguments, answer))
yield return false;
}
}
#pragma warning restore 0168
}
public IEnumerable<bool> retract(object Head, object Body)
{
Head = YP.getValue(Head);
if (Head is Variable)
throw new PrologException("instantiation_error", "Head is an unbound variable");
object[] arguments = YP.getFunctorArgs(Head);
// We always match Head from _allAnswers, and the Body is Atom.a("true").
#pragma warning disable 0168
foreach (bool l1 in YP.unify(Body, Atom.a("true")))
{
// The caller can assert another answer into this same predicate during yield, so we have to
// make a copy of the answers.
foreach (object[] answer in _allAnswers.ToArray())
{
foreach (bool l2 in YP.unifyArrays(arguments, answer))
{
_allAnswers.Remove(answer);
clearIndexes();
yield return false;
}
}
}
#pragma warning restore 0168
}
/// <summary>
/// After retracting or prepending an answer in _allAnswers, the indexes are invalid, so clear them.
/// </summary>
private void clearIndexes()
{
_indexedAnswers.Clear();
_gotAnswersForSignature.Clear();
}
/// <summary>
/// A HashedList extends an ArrayList with methods to get a hash and to check equality
/// based on the elements of the list.
/// </summary>
public class HashedList : ArrayList
{
private bool _gotHashCode = false;
private int _hashCode;
public HashedList()
: base()
{
}
public HashedList(int capacity)
: base(capacity)
{
}
public HashedList(ICollection c)
: base(c)
{
}
// Debug: Should override all the other methods that change this.
public override int Add(object value)
{
_gotHashCode = false;
return base.Add(value);
}
public override int GetHashCode()
{
if (!_gotHashCode)
{
int hashCode = 1;
foreach (object obj in this)
hashCode = 31 * hashCode + (obj == null ? 0 : obj.GetHashCode());
_hashCode = hashCode;
_gotHashCode = true;
}
return _hashCode;
}
public override bool Equals(object obj)
{
if (!(obj is ArrayList))
return false;
ArrayList objList = (ArrayList)obj;
if (objList.Count != Count)
return false;
for (int i = 0; i < Count; ++i)
{
object value = objList[i];
if (value == null)
{
if (this[i] != null)
return false;
}
else
{
if (!value.Equals(this[i]))
return false;
}
}
return true;
}
}
/// <summary>
/// If we keep an index on value, return the value, or null if we don't index it.
/// </summary>
/// <param name="value">the term to examine. Assume you already called YP.getValue(value)</param>
/// <returns></returns>
public static object getIndexValue(object value)
{
if (value is Atom || value is string || value is Int32 || value is DateTime)
return value;
else
return null;
}
}
}

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@ -1,166 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public class ListPair : Functor2
{
public ListPair(object head, object tail) : base(Atom.DOT, head, tail)
{
}
public static object make(List<object> list)
{
if (list.Count <= 0)
return Atom.NIL;
object result = Atom.NIL;
// Start from the end.
for (int i = list.Count - 1; i >= 0; --i)
result = new ListPair(list[i], result);
return result;
}
public static object make(object[] array)
{
if (array.Length <= 0)
return Atom.NIL;
object result = Atom.NIL;
// Start from the end.
for (int i = array.Length - 1; i >= 0; --i)
result = new ListPair(array[i], result);
return result;
}
/// <summary>
/// Return a ListPair version of array, where repeated elements
/// (according to YP.termEqual) are removed.
/// </summary>
/// <param name="array"></param>
/// <returns></returns>
public static object makeWithoutRepeatedTerms(object[] array)
{
if (array.Length <= 0)
return Atom.NIL;
// Start from the end.
object previousTerm = array[array.Length - 1];
object result = new ListPair(previousTerm, Atom.NIL);
for (int i = array.Length - 2; i >= 0; --i)
{
object term = array[i];
if (YP.termEqual(term, previousTerm))
continue;
result = new ListPair(term, result);
previousTerm = term;
}
return result;
}
/// <summary>
/// Return a ListPair version of array, where repeated elements
/// (according to YP.termEqual) are removed.
/// </summary>
/// <param name="array"></param>
/// <returns></returns>
public static object makeWithoutRepeatedTerms(List<object> array)
{
if (array.Count <= 0)
return Atom.NIL;
// Start from the end.
object previousTerm = array[array.Count - 1];
object result = new ListPair(previousTerm, Atom.NIL);
for (int i = array.Count - 2; i >= 0; --i)
{
object term = array[i];
if (YP.termEqual(term, previousTerm))
continue;
result = new ListPair(term, result);
previousTerm = term;
}
return result;
}
public static object make(object element1)
{
return new ListPair(element1, Atom.NIL);
}
public static object make(object element1, object element2)
{
return new ListPair(element1, new ListPair(element2, Atom.NIL));
}
public static object make(object element1, object element2, object element3)
{
return new ListPair(element1,
new ListPair(element2, new ListPair(element3, Atom.NIL)));
}
/// <summary>
/// Return an array of the elements in list or null if it is not
/// a proper list. If list is Atom.NIL, return an array of zero elements.
/// If the list or one of the tails of the list is Variable, raise an instantiation_error.
/// This does not call YP.getValue on each element.
/// </summary>
/// <param name="list"></param>
/// <returns></returns>
public static object[] toArray(object list)
{
list = YP.getValue(list);
if (list.Equals(Atom.NIL))
return new object[0];
List<object> result = new List<object>();
object element = list;
while (true) {
if (element == Atom.NIL)
break;
if (element is Variable)
throw new PrologException(Atom.a("instantiation_error"),
"List tail is an unbound variable");
if (!(element is Functor2 && ((Functor2)element)._name == Atom.DOT))
// Not a proper list.
return null;
result.Add(((Functor2)element)._arg1);
element = YP.getValue(((Functor2)element)._arg2);
}
if (result.Count <= 0)
return null;
return result.ToArray();
}
}
}

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OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/PrologException.cs
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/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
/// <summary>
/// A PrologException is used as the exception thrown by YP.throw(Term).
/// </summary>
public class PrologException : Exception
{
public readonly object _term;
/// <summary>
/// Create a PrologException with the given Term. The printable exception message is the full Term.
/// </summary>
/// <param name="Term">the term of the exception</param>
public PrologException(object Term)
: base(YP.getValue(Term).ToString())
{
_term = YP.makeCopy(Term, new Variable.CopyStore());
}
/// <summary>
/// Create a PrologException where the Term is error(ErrorTerm, Message).
/// This uses YP.makeCopy to copy the ErrorTerm and Message so that they are valid after unbinding.
/// </summary>
/// <param name="ErrorTerm">the error term of the error</param>
/// <param name="Messsage">the message term of the error. If this is a string, it is converted to an
/// Atom so it can be used by Prolog code.
/// Message, converted to a string, is use as the printable exception message.
/// </param>
public PrologException(object ErrorTerm, object Message)
: base(YP.getValue(Message).ToString())
{
if (Message is string)
Message = Atom.a((string)Message);
_term = YP.makeCopy(new Functor2(Atom.a("error"), ErrorTerm, Message), new Variable.CopyStore());
}
public class TypeErrorInfo
{
public readonly Atom _Type;
public readonly object _Culprit;
public readonly object _Message;
public TypeErrorInfo(Atom Type, object Culprit, object Message)
{
_Type = Type;
_Culprit = Culprit;
_Message = Message;
}
}
/// <summary>
/// Return the TypeErrorInfo for this exception, or null if _term does not match
/// error(type_error(Type, Culprit), Message).
/// </summary>
/// <returns></returns>
public TypeErrorInfo getTypeErrorInfo()
{
if (!(_term is Functor2 && ((Functor2)_term)._name._name == "error"))
return null;
object errorTerm = ((Functor2)_term)._arg1;
if (!(errorTerm is Functor2 && ((Functor2)errorTerm)._name._name == "type_error"))
return null;
if (!(((Functor2)errorTerm)._arg1 is Atom))
return null;
return new TypeErrorInfo
((Atom)((Functor2)errorTerm)._arg1, ((Functor2)errorTerm)._arg2, ((Functor2)_term)._arg2);
}
public class ExistenceErrorInfo
{
public readonly Atom _Type;
public readonly object _Culprit;
public readonly object _Message;
public ExistenceErrorInfo(Atom Type, object Culprit, object Message)
{
_Type = Type;
_Culprit = Culprit;
_Message = Message;
}
/// <summary>
/// If _Type is procedure and _Culprit is name/artity, return the name. Otherwise return null.
/// </summary>
/// <returns></returns>
public object getProcedureName()
{
if (!(_Type._name == "procedure" &&
_Culprit is Functor2 && ((Functor2)_Culprit)._name == Atom.SLASH))
return null;
return ((Functor2)_Culprit)._arg1;
}
/// <summary>
/// If _Type is procedure and _Culprit is name/arity and arity is an integer, return the arity.
/// Otherwise return -1.
/// </summary>
/// <returns></returns>
public int getProcedureArity()
{
if (!(_Type._name == "procedure" &&
_Culprit is Functor2 && ((Functor2)_Culprit)._name == Atom.SLASH))
return -1;
if (!(((Functor2)_Culprit)._arg2 is int))
return -1;
return (int)((Functor2)_Culprit)._arg2;
}
}
/// <summary>
/// Return the ExistenceErrorInfo for this exception, or null if _term does not match
/// error(existence_error(Type, Culprit), Message). If the returned ExistenceErrorInfo _Culprit is
/// procedure, you can use its getProcedureName and getProcedureArity.
/// </summary>
/// <returns></returns>
public ExistenceErrorInfo getExistenceErrorInfo()
{
if (!(_term is Functor2 && ((Functor2)_term)._name._name == "error"))
return null;
object errorTerm = ((Functor2)_term)._arg1;
if (!(errorTerm is Functor2 && ((Functor2)errorTerm)._name._name == "existence_error"))
return null;
if (!(((Functor2)errorTerm)._arg1 is Atom))
return null;
return new ExistenceErrorInfo
((Atom)((Functor2)errorTerm)._arg1, ((Functor2)errorTerm)._arg2, ((Functor2)_term)._arg2);
}
}
}

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YPOS: YieldProlog for OpenSim
a compiler from Prolog to OpenSim compatible C# scripts
Ported by Kino Coursey and Douglas Miles at Daxtron Labs.
Based on Jeff Thompson Yield Prolog, http://yieldprolog.sourceforge.net/
For Prolog see http://en.wikipedia.org/wiki/Prolog
INTRODUCTION
This folder contains code to implement a Prolog compiler using the "Yield Statement" found in C#, Javascript, and Python.
The original Yield Prolog system can transform Prolog programs into C# code.
In this system we detect and extract YieldProlog code (with "//YP" as the first four characters in the script) and seperate it from any c# code ("marked by "//CS").
The YP code is transformed to C# and prepended to the "//CS" section, and passed as a bundel to the existing C# compiler.
The end result is Prolog can interface to OpenSim using the existing "//CS" functionality, and C# can call the compiled Prolog.
As such YP allows both declaritive and procedural programming in a 3D script enabled environment.
FEATURES
* Allows implementation of logic programming for objects and agents.
* C#/Javascript/Python as intermediate language
* Yield Prolog has relatively high speed of execution which is important in OpenSim. http://yieldprolog.sourceforge.net/benchmarks.html
* It is compatable with the existing C#/Mono based system.
* Yield Prolog is BSD license
* Calling Prolog from C# scripts
* Calling C# functions (with LSL and OS functions) from Prolog
* Prolog dynamic database
* Edinburgh, Cocksin & Mellish style syntax.
* Compiler is generated by compiling the Prolog descrition of itself into C#
* Same script entry interface as LSL
* Yield Prolog 1.0.1 Released : it passes all but 9 of the 421 tests in the ISO Prolog test suite (97.8%).
TODO
* Utilize ability to generate Javascript and Python code
* Integrate Prolog database with Sim
* Translation error reporting back to the editor
* Communications via message passing
* Interface to external inference engines
POSSIBILITIES
* Inworld expert systems
* Parallel logic programming and expert systems
* Ontology based processing
* Knowledge based alerting, accessing and business rules
For instance, listen on channel x, filter the events and broadcast alerts on channel y
or send IM, emails etc.
USAGE:
Add "yp" as an allowed compiler
OpenSim.ini
[ScriptEngine.DotNetEngine]
AllowedCompilers=lsl,cs,js,vb,yp
Enter scripts using the inworld editing process. Scripts have the following format.
The first line of a file must have "//yp".
//yp
<PROLOG CODE>
//CS
<CS CODE>
C# code calling a Prolog Predicate:
-----------------------------------
The Prolog predicate is transformed into a C# boolean function. So the general calling format is:
foreach( bool var in prolog_predicate(ARGS)) {};
I/O is via using a string reader and writer in conjunction with YP.See() and YP.Tell()
StringWriter PrologOutuput= new StringWriter();
StringReader PrologInput= new StringReader(myInputString);
YP.see(PrologInput);
YP.tell(PrologOutuput);
<CALL PROLOG CODE HERE>
YP.seen();
YP.told();
StringBuilder builder = PrologOutput.GetStringBuilder();
string finaloutput = builder.ToString();
Any prolog reads and writes will be to the passed StringReader and StringWriter. In fact any TextReader/TextWriter class can be used.
Strings in Prolog are stored as Atom's and you need to use an Atom object to match.
\\yp
wanted('bob').
\\cs
string Who="bob";
foreach( bool ans in wanted(Atom.a(Who) )){};
Prolog code calling a C# function:
-----------------------------------
The prolog code uses the script_event('name_of_function',ARGS) builtin, which is transformed into the function call.
The C# function called uses "PrologCallback" and returns a boolean.
Dynamic database assertions:
-----------------------------------
void assertdb2(string predicate, string arg1, string arg2)
{
name = Atom.a(predicate);
YP.assertFact(name, new object[] { arg1, arg2 });
}
void retractdb2(string predicate, string arg1, string arg2)
{
name = Atom.a(predicate);
YP.retractFact(name, new object[] { arg1, arg2 });
}
----------- IMPORT EXTERNAL FUNCTIONS ----------
Using 'import' to call a static function
Taken mostly from http://yieldprolog.sourceforge.net/tutorial4.html
If we want to call a static function but it is not defined in the Prolog code, we can simply add an import directive.
(In Prolog, if you start a line with :- it is a directive to the compiler. Don't forget to end with a period.):
:- import('', [parent/2]).
uncle(Person, Uncle):- parent(Person, Parent), brother(Parent, Uncle).
The import directive has two arguments.
The first argument is the module where the imported function is found, which is always ''.
For C#, this means the imported function is in the same class as the calling function.
For Javascript and Python, this means the imported function is in the global scope.
The second argument to import is the comma-separated list of imported functions, where each member of the list is 'name/n', where 'name' is the name of the function and 'n' is the number of arguments.
In this example, parent has two arguments, so we use parent/2.
Note: you can use an imported function in a dynamically defined goal, or a function in another class.
:- import('', [parent/2]).
uncle(Person, Uncle) :- Goal = parent(Person, Parent), Goal, brother(Parent, Uncle).
:- import('', ['OtherClass.parent'/2]).
uncle(Person, Uncle) :- 'OtherClass.parent'(Person, Parent), brother(Parent, Uncle).
--------- Round-about Hello Wonderful world ----------
//yp
:-import('',[sayit/1]).
sayhello(X):-sayit(X).
//cs
public void default_event_state_entry()
{
llSay(0,"prolog hello.");
foreach( bool ans in sayhello(Atom.a(@"wonderful world") )){};
}
PrologCallback sayit(object ans)
{
llSay(0,"sayit1");
string msg = "one answer is :"+((Variable)ans).getValue();
llSay(0,msg);
yield return false;
}
------------------ UPDATES -----------------
Yield Prolog 1.0 Released : It passes all but 15 of the 421 tests in the ISO Prolog test suite.
New Features:
* Added support for Prolog predicates read and read_term.
* In see, Added support for a char code list as the input.
Using this as the input for "fred" makes
set_prolog_flag(double_quotes, atom) and
set_prolog_flag(double_quotes, chars) pass the ISO test suite.
Fixed Bugs:
* In atom_chars, check for unbound tail in the char list.
This makes atom_chars pass the ISO test suite.
* In current_predicate, also check for static functions.
This makes current_predicate pass the ISO test suite.
Known Issues:
Here are the 9 errors of the 421 tests in the ISO test suite in
YieldProlog\source\prolog\isoTestSuite.P .
Some of these have a good excuse for why Yield Prolog produces the error. The rest will be addressed in a future maintenance release.
Goal: call((fail, 1))
Expected: type_error(callable, (fail, 1))
Extra Solutions found: failure
Goal: call((write(3), 1))
Expected: type_error(callable, (write(3), 1))
Extra Solutions found: type_error(callable, 1)
Goal: call((1; true))
Expected: type_error(callable, (1 ; true))
Extra Solutions found: type_error(callable, 1)
Goal: (catch(true, C, write('something')), throw(blabla))
Expected: system_error
Extra Solutions found: unexpected_ball(blabla)
Goal: catch(number_chars(A,L), error(instantiation_error, _), fail)
Expected: failure
Extra Solutions found: instantiation_error
Goal: Goal: (X = 1 + 2, 'is'(Y, X * 3))
Expected: [[X <-- (1 + 2), Y <-- 9]]
Extra Solutions found: type_error(evaluable, /(+, 2))
Goal: 'is'(77, N)
Expected: instantiation_error
Extra Solutions found: N <-- 77)
Goal: \+(!, fail)
Expected: success
Extra Solutions found: failure
((X=1;X=2), \+((!,fail)))
Expected: [[X <-- 1],[X <-- 2]]
Extra Solutions found: failure
========================= APPENDIX A: touch test ================================
===================================
Input YP Code
===================================
//yp
mydb('field2','field1').
mydb('andy','jane').
mydb('carl','dan').
mydb('andy','bill').
mydb('andy','betty').
call_me(X):-mydb(X,Y) , respond(Y).
respond(X):- script_event('sayit',X).
//cs
public void default_event_touch_start(int N )
{
llSay(0,"pstart1");
foreach( bool ans in call_me(Atom.a(@"andy") )){};
llSay(0,"pstop2");
}
public void default_event_state_entry()
{
llSay(0,"prolog tester active.");
}
PrologCallback sayit(object ans)
{
llSay(0,"sayit1");
string msg = "one answer is :"+((Variable)ans).getValue();
llSay(0,msg);
yield return false;
}
===================================
Generated CS Code
===================================
using OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog;using OpenSim.Region.ScriptEngine.Common; using System.Collections.Generic;
namespace SecondLife { public class Script : OpenSim.Region.ScriptEngine.Common.ScriptBaseClass {
static OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog.YP YP=null;public Script() { YP= new OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog.YP(); }
//cs
public void default_event_touch_start(int N )
{
llSay(0,"pstart1");
foreach( bool ans in call_me(Atom.a(@"carl") )){};
llSay(0,"pstop2");
}
public void default_event_state_entry()
{
llSay(0,"prolog tester active.");
}
public IEnumerable<bool> sayit(object ans)
{
llSay(0,"sayit1");
string msg = "one answer is :"+((Variable)ans).getValue();
llSay(0,msg);
yield return false;
}
//YPEncoded
public IEnumerable<bool> mydb(object arg1, object arg2) {
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"carl"))) {
foreach (bool l3 in YP.unify(arg2, Atom.a(@"dan"))) {
yield return false;
}
}
}
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"andy"))) {
foreach (bool l3 in YP.unify(arg2, Atom.a(@"bill"))) {
yield return false;
}
}
}
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"andy"))) {
foreach (bool l3 in YP.unify(arg2, Atom.a(@"betty"))) {
yield return false;
}
}
}
}
public IEnumerable<bool> call_me(object X) {
{
Variable Y = new Variable();
foreach (bool l2 in mydb(X, Y)) {
foreach (bool l3 in respond(Y)) {
yield return false;
}
}
}
}
public IEnumerable<bool> respond(object X) {
{
foreach (bool l2 in this.sayit( X)) {
yield return false;
}
}
}
} }
========================= APPENDIX B:SENSOR INFORMED SCRIPT =====================
===================================
Input YP Code
===================================
//yp
nop.
good('Daxxon Kinoc').
good('Fluffy Kitty').
bad('Eric Evil').
bad('Spikey Plant').
prolog_notify(X) :- good(X) , script_event('accept',X).
prolog_notify(X) :- bad(X) , script_event('reject',X).
//cs
public void default_event_state_entry()
{
llSay(0,"prolog sensor tester active.");
// Start a sensor looking for Agents
llSensorRepeat("","",AGENT, 10, PI,20);
}
public void default_event_sensor(int number_detected )
{
int i;
for(i=0;i< number_detected ;i++)
{
string dName = llDetectedName(i);
string dOwner = llDetectedName(i);
foreach(bool response in prolog_notify(Atom.a(dName)) ){};
foreach(bool response in prolog_notify(dOwner) ){};
llSay(0,"Saw "+dName);
}
}
string decodeToString(object obj)
{
if (obj is Variable) { return (string) ((Variable)obj).getValue();}
if (obj is Atom) { return (string) ((Atom)obj)._name;}
return "unknown type";
}
PrologCallback accept(object ans)
{
string msg = "Welcoming :"+decodeToString(ans);
llSay(0,msg);
yield return false;
}
PrologCallback reject(object ans)
{
string msg = "Watching :"+decodeToString(ans);
llSay(0,msg);
yield return false;
}
===================================
Generated CS Code
===================================
using OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog; using OpenSim.Region.ScriptEngine.Common; using System.Collections.Generic;
namespace SecondLife { public class Script : OpenSim.Region.ScriptEngine.Common.ScriptBaseClass {
static OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog.YP YP=null; public Script() { YP= new OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog.YP(); }
//cs
public void default_event_state_entry()
{
llSay(0,"prolog sensor tester active.");
// Start a sensor looking for Agents
llSensorRepeat("","",AGENT, 10, PI,20);
}
public void default_event_sensor(int number_detected )
{
int i;
for(i=0;i< number_detected ;i++)
{
string dName = llDetectedName(i);
string dOwner = llDetectedName(i);
foreach(bool response in prolog_notify(Atom.a(dName)) ){};
foreach(bool response in prolog_notify(dOwner) ){};
llSay(0,"Saw "+dName);
}
}
string decodeToString(object obj)
{
if (obj is Variable) { return (string) ((Variable)obj).getValue();}
if (obj is Atom) { return (string) ((Atom)obj)._name;}
return "unknown type";
}
public IEnumerable<bool> accept(object ans)
{
string msg = "Welcoming :"+decodeToString(ans);
llSay(0,msg);
yield return false;
}
public IEnumerable<bool> reject(object ans)
{
string msg = "Watching :"+decodeToString(ans);
llSay(0,msg);
yield return false;
}
//YPEncoded
public IEnumerable<bool> yp_nop_header_nop() {
{
yield return false;
}
}
public IEnumerable<bool> good(object arg1) {
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"Daxxon Kinoc"))) {
yield return false;
}
}
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"Fluffy Kitty"))) {
yield return false;
}
}
}
public IEnumerable<bool> bad(object arg1) {
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"Eric Evil"))) {
yield return false;
}
}
{
foreach (bool l2 in YP.unify(arg1, Atom.a(@"Spikey Plant"))) {
yield return false;
}
}
}
public IEnumerable<bool> prolog_notify(object X) {
{
foreach (bool l2 in good(X)) {
foreach (bool l3 in this.accept( X)) {
yield return false;
}
}
}
{
foreach (bool l2 in bad(X)) {
foreach (bool l3 in this.reject( X)) {
yield return false;
}
}
}
}
} }

62
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/UndefinedPredicateException.cs
View File

@ -1,62 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
/// <summary>
/// An UndefinedPredicateException extends PrologException to create an existence_error exception.
/// </summary>
public class UndefinedPredicateException : PrologException
{
private Atom _predicateName;
private int _arity;
public UndefinedPredicateException(object message, Atom predicateName, int arity)
: base(new Functor2
(Atom.a("existence_error"), Atom.a("procedure"), new Functor2(Atom.a("/"), predicateName, arity)),
message)
{
_predicateName = predicateName;
_arity = arity;
}
public Atom PredicateName
{
get { return _predicateName; }
}
public int Arity
{
get { return _arity; }
}
}
}

222
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/Variable.cs
View File

@ -1,222 +0,0 @@
/*
* Copyright (C) 2007-2008, Jeff Thompson
*
* All rights reserved.
*
* 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 copyright holder 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT OWNER OR
* 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;
using System.Collections.Generic;
namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog
{
public interface IUnifiable
{
IEnumerable<bool> unify(object arg);
void addUniqueVariables(List<Variable> variableSet);
object makeCopy(Variable.CopyStore copyStore);
bool termEqual(object term);
bool ground();
}
/// <summary>
/// A Variable is passed to a function so that it can be unified with
/// value or another Variable. See getValue and unify for details.
/// </summary>
public class Variable : IUnifiable
{
// Use _isBound separate from _value so that it can be bound to any value,
// including null.
private bool _isBound = false;
private object _value;
/// <summary>
/// If this Variable is unbound, then just return this Variable.
/// Otherwise, if this has been bound to a value with unify, return the value.
/// If the bound value is another Variable, this follows the "variable chain"
/// to the end and returns the final value, or the final Variable if it is unbound.
/// For more details, see http://yieldprolog.sourceforge.net/tutorial1.html
/// </summary>
/// <returns></returns>
public object getValue()
{
if (!_isBound)
return this;
object result = _value;
while (result is Variable)
{
if (!((Variable)result)._isBound)
return result;
// Keep following the Variable chain.
result = ((Variable)result)._value;
}
return result;
}
/// <summary>
/// If this Variable is bound, then just call YP.unify to unify this with arg.
/// (Note that if arg is an unbound Variable, then YP.unify will bind it to
/// this Variable's value.)
/// Otherwise, bind this Variable to YP.getValue(arg) and yield once. After the
/// yield, return this Variable to the unbound state.
/// For more details, see http://yieldprolog.sourceforge.net/tutorial1.html
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
public IEnumerable<bool> unify(object arg)
{
if (!_isBound)
{
_value = YP.getValue(arg);
if (_value == this)
// We are unifying this unbound variable with itself, so leave it unbound.
yield return false;
else
{
_isBound = true;
try
{
yield return false;
}
finally
{
// Remove the binding.
_isBound = false;
}
}
}
else
{
// disable warning on l1, don't see how we can
// code this differently
#pragma warning disable 0168
foreach (bool l1 in YP.unify(this, arg))
yield return false;
#pragma warning restore 0168
}
}
public override string ToString()
{
object value = getValue();
if (value == this)
return "_Variable";
else
return getValue().ToString();
}
/// <summary>
/// If bound, call YP.addUniqueVariables on the value. Otherwise, if this unbound
/// variable is not already in variableSet, add it.
/// </summary>
/// <param name="variableSet"></param>
public void addUniqueVariables(List<Variable> variableSet)
{
if (_isBound)
YP.addUniqueVariables(getValue(), variableSet);
else
{
if (variableSet.IndexOf(this) < 0)
variableSet.Add(this);
}
}
/// <summary>
/// If bound, return YP.makeCopy for the value, else return copyStore.getCopy(this).
/// However, if copyStore is null, just return this.
/// </summary>
/// <param name="copyStore"></param>
/// <returns></returns>
public object makeCopy(Variable.CopyStore copyStore)
{
if (_isBound)
return YP.makeCopy(getValue(), copyStore);
else
return copyStore == null ? this : copyStore.getCopy(this);
}
public bool termEqual(object term)
{
if (_isBound)
return YP.termEqual(getValue(), term);
else
return this == YP.getValue(term);
}
public bool ground()
{
if (_isBound)
// This is usually called by YP.ground which already did getValue, so this
// should never be reached, but check anyway.
return YP.ground(getValue());
else
return false;
}
/// <summary>
/// A CopyStore is used by makeCopy to track which Variable objects have
/// been copied.
/// </summary>
public class CopyStore
{
private List<Variable> _inVariableSet = new List<Variable>();
private List<Variable> _outVariableSet = new List<Variable>();
/// <summary>
/// If inVariable has already been copied, return its copy. Otherwise,
/// return a fresh Variable associated with inVariable.
/// </summary>
/// <param name="inVariable"></param>
/// <returns></returns>
public Variable getCopy(Variable inVariable)
{
int index = _inVariableSet.IndexOf(inVariable);
if (index >= 0)
return _outVariableSet[index];
else
{
Variable outVariable = new Variable();
_inVariableSet.Add(inVariable);
_outVariableSet.Add(outVariable);
return outVariable;
}
}
/// <summary>
/// Return the number of unique variables that have been copied.
/// </summary>
/// <returns></returns>
public int getNUniqueVariables()
{
return _inVariableSet.Count;
}
}
}
}

2701
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/YP.cs
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File diff suppressed because it is too large Load Diff

6382
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/YPCompiler.cs
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File diff suppressed because it is too large Load Diff

12
OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/c_sharp_example.txt
View File

@ -1,12 +0,0 @@
//c#
namespace SecondLife {
public class Script : OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL.LSL_BaseClass
{
public Script() { }
public void default_event_state_entry( )
{
llSay(0, "testing, I've been touched");
}
}}

39
OpenSim/Region/ScriptEngine/DotNetEngine/ScriptManager.cs
View File

@ -39,6 +39,7 @@ using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading;
using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
using OpenSim.Region.ScriptEngine.Shared.CodeTools;
namespace OpenSim.Region.ScriptEngine.DotNetEngine
{
@ -87,13 +88,10 @@ namespace OpenSim.Region.ScriptEngine.DotNetEngine
Unload = 2
}
public Dictionary<UUID, String> scriptList =
new Dictionary<UUID, string>();
public Dictionary<uint, Dictionary<UUID, InstanceData>> Scripts =
new Dictionary<uint, Dictionary<UUID, InstanceData>>();
private Compiler.LSL.Compiler LSLCompiler;
private Compiler LSLCompiler;
public Scene World
{
@ -105,7 +103,7 @@ namespace OpenSim.Region.ScriptEngine.DotNetEngine
public void Initialize()
{
// Create our compiler
LSLCompiler = new Compiler.LSL.Compiler(m_scriptEngine);
LSLCompiler = new Compiler(m_scriptEngine);
}
public void _StartScript(uint localID, UUID itemID, string Script,
@ -136,23 +134,22 @@ namespace OpenSim.Region.ScriptEngine.DotNetEngine
if (m_host.TaskInventory.TryGetValue(itemID, out taskInventoryItem))
assetID = taskInventoryItem.AssetID;
ScenePresence presence =
World.GetScenePresence(taskInventoryItem.OwnerID);
try
{
if (scriptList.TryGetValue(assetID, out CompiledScriptFile))
{
m_log.InfoFormat("[SCRIPT]: Found existing compile of "+
"assetID {0}: {1}", assetID, CompiledScriptFile);
}
else
{
// Compile (We assume LSL)
CompiledScriptFile =
LSLCompiler.PerformScriptCompile(Script);
// Compile (We assume LSL)
CompiledScriptFile =
LSLCompiler.PerformScriptCompile(Script,
assetID.ToString());
m_log.InfoFormat("[SCRIPT]: Compiled assetID {0}: {1}",
assetID, CompiledScriptFile);
scriptList.Add(assetID, CompiledScriptFile);
}
if (presence != null)
presence.ControllingClient.SendAgentAlertMessage(
"Compile successful", false);
m_log.InfoFormat("[SCRIPT]: Compiled assetID {0}: {1}",
assetID, CompiledScriptFile);
InstanceData id = new InstanceData();
@ -201,6 +198,10 @@ namespace OpenSim.Region.ScriptEngine.DotNetEngine
}
catch (Exception e) // LEGIT: User Scripting
{
if (presence != null)
presence.ControllingClient.SendAgentAlertMessage(
"Script saved with errors, check debug window!",
false);
try
{
// DISPLAY ERROR INWORLD

4
OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
View File

@ -83,8 +83,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
// private static int instanceID = new Random().Next(0, int.MaxValue); // Unique number to use on our compiled files
private static UInt64 scriptCompileCounter = 0; // And a counter
public IScriptEngine m_scriptEngine;
public Compiler(IScriptEngine scriptEngine)
public IEventReceiver m_scriptEngine;
public Compiler(IEventReceiver scriptEngine)
{
m_scriptEngine = scriptEngine;
ReadConfig();

1
prebuild.xml
View File

@ -1957,6 +1957,7 @@
<Reference name="OpenSim.Region.Interfaces" />
<Reference name="OpenSim.Region.ScriptEngine.Shared"/>
<Reference name="OpenSim.Region.ScriptEngine.Shared.Api"/>
<Reference name="OpenSim.Region.ScriptEngine.Shared.CodeTools"/>
<Reference name="Microsoft.JScript"/>
<Reference name="Nini.dll" />
<Reference name="log4net.dll"/>