1173 lines
46 KiB
C#
1173 lines
46 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Text;
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using System.IO;
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using System.Collections.Generic;
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using System.Reflection;
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using log4net;
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using Tools;
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using OpenSim.Region.Framework.Interfaces;
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namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
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{
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public class CSCodeGenerator : ICodeConverter
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{
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// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private static yyLSLSyntax yyLSL = new yyLSLSyntax();
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private SYMBOL m_astRoot = null;
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private Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> m_positionMap;
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private int m_braceCount; // for indentation
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private int m_CSharpLine; // the current line of generated C# code
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private int m_CSharpCol; // the current column of generated C# code
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private List<string> m_warnings = new List<string>();
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private IScriptModuleComms m_comms = null;
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private bool m_insertCoopTerminationChecks;
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private static string m_coopTerminationCheck = "opensim_reserved_CheckForCoopTermination();";
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/// <summary>
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/// Keep a record of the previous node when we do the parsing.
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/// </summary>
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/// <remarks>
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/// We do this here because the parser generated by CSTools does not retain a reference to its parent node.
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/// The previous node is required so we can correctly insert co-op termination checks when required.
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/// </remarks>
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// private SYMBOL m_previousNode;
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/// <summary>
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/// Creates an 'empty' CSCodeGenerator instance.
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/// </summary>
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public CSCodeGenerator()
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{
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m_comms = null;
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ResetCounters();
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}
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public CSCodeGenerator(IScriptModuleComms comms, bool insertCoopTerminationChecks)
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{
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m_comms = comms;
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m_insertCoopTerminationChecks = insertCoopTerminationChecks;
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ResetCounters();
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}
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/// <summary>
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/// Get the mapping between LSL and C# line/column number.
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/// </summary>
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/// <returns>Dictionary\<KeyValuePair\<int, int\>, KeyValuePair\<int, int\>\>.</returns>
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public Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> PositionMap
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{
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get { return m_positionMap; }
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}
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/// <summary>
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/// Get the mapping between LSL and C# line/column number.
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/// </summary>
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/// <returns>SYMBOL pointing to root of the abstract syntax tree.</returns>
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public SYMBOL ASTRoot
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{
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get { return m_astRoot; }
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}
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public void Clear()
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{
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m_astRoot.kids = null;
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m_astRoot.yylx = null;
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m_astRoot.yyps = null;
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m_astRoot = null;
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m_positionMap = null;
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m_warnings.Clear();
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m_comms = null;
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}
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/// <summary>
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/// Resets various counters and metadata.
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/// </summary>
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private void ResetCounters()
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{
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m_braceCount = 0;
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m_CSharpLine = 0;
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m_CSharpCol = 1;
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m_positionMap = new Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>>();
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m_astRoot = null;
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}
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public string Convert(string script)
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{
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StringBuilder sb = new StringBuilder(4096);
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Convert(script, sb);
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return sb.ToString();
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}
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/// <summary>
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/// Generate the code from the AST we have.
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/// </summary>
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/// <param name="script">The LSL source as a string.</param>
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/// <returns>String containing the generated C# code.</returns>
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public void Convert(string script, StringBuilder sb)
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{
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// m_log.DebugFormat("[CS CODE GENERATOR]: Converting to C#\n{0}", script);
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m_warnings.Clear();
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ResetCounters();
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ErrorHandler errorHandler = new ErrorHandler(true);
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Parser p = new LSLSyntax(yyLSL, errorHandler);
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LSL2CSCodeTransformer codeTransformer;
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try
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{
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codeTransformer = new LSL2CSCodeTransformer(p.Parse(script));
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}
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catch (CSToolsException e)
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{
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string message;
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// LL start numbering lines at 0 - geeks!
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// Also need to subtract one line we prepend!
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//
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string emessage = e.Message;
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string slinfo = e.slInfo.ToString();
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// Remove wrong line number info
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//
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if (emessage.StartsWith(slinfo+": "))
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emessage = emessage.Substring(slinfo.Length+2);
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message = String.Format("({0},{1}) {2}",
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e.slInfo.lineNumber - 1,
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e.slInfo.charPosition - 1, emessage);
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throw new Exception(message);
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}
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m_astRoot = codeTransformer.Transform();
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// standard preamble
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m_braceCount++;
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m_braceCount++;
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// line number
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m_CSharpLine += 10;
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// here's the payload
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sb.Append("\n");
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foreach (SYMBOL s in m_astRoot.kids)
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GenerateNodeToSB(m_astRoot, s, sb);
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codeTransformer = null;
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p.m_lexer.m_buf=null;
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p.m_lexer.yytext = null;
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p.m_lexer = null;
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p.m_symbols = null;
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p = null;
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errorHandler = null;
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// close braces!
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// m_braceCount--;
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//retstr += GenerateIndentedLine("}");
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// m_braceCount--;
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//retstr += GenerateLine("}");
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// Removes all carriage return characters which may be generated in Windows platform. Is there
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// cleaner way of doing this?
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// sb.Replace("\r", "");
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}
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/// <summary>
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/// Get the set of warnings generated during compilation.
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/// </summary>
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/// <returns></returns>
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public string[] GetWarnings()
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{
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return m_warnings.ToArray();
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}
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private void AddWarning(string warning)
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{
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if (!m_warnings.Contains(warning))
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{
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m_warnings.Add(warning);
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}
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}
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/// <summary>
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/// Recursively called to generate each type of node. Will generate this
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/// node, then all it's children.
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/// </summary>
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/// <param name="previousSymbol">The parent node.</param>
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/// <param name="s">The current node to generate code for.</param>
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/// <returns>String containing C# code for SYMBOL s.</returns>
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private void GenerateNodeToSB(SYMBOL previousSymbol, SYMBOL s, StringBuilder sb)
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{
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// make sure to put type lower in the inheritance hierarchy first
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// ie: since IdentArgument and ExpressionArgument inherit from
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// Argument, put IdentArgument and ExpressionArgument before Argument
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if (s is GlobalFunctionDefinition)
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GenerateGlobalFunctionDefinition((GlobalFunctionDefinition) s, sb);
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else if (s is GlobalVariableDeclaration)
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GenerateGlobalVariableDeclaration((GlobalVariableDeclaration) s , sb);
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else if (s is State)
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GenerateState((State) s, sb);
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else if (s is CompoundStatement)
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GenerateCompoundStatement(previousSymbol, (CompoundStatement) s, sb);
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else if (s is Declaration)
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GenerateDeclaration((Declaration) s, sb);
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else if (s is Statement)
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GenerateStatement(previousSymbol, (Statement) s, sb);
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else if (s is ReturnStatement)
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GenerateReturnStatement((ReturnStatement) s, sb);
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else if (s is JumpLabel)
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GenerateJumpLabel((JumpLabel) s, sb);
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else if (s is JumpStatement)
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GenerateJumpStatement((JumpStatement) s, sb);
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else if (s is StateChange)
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GenerateStateChange((StateChange) s, sb);
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else if (s is IfStatement)
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GenerateIfStatement((IfStatement) s, sb);
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else if (s is WhileStatement)
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GenerateWhileStatement((WhileStatement) s, sb);
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else if (s is DoWhileStatement)
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GenerateDoWhileStatement((DoWhileStatement) s, sb);
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else if (s is ForLoop)
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GenerateForLoop((ForLoop) s, sb);
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else if (s is ArgumentList)
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GenerateArgumentList((ArgumentList) s, sb);
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else if (s is Assignment)
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GenerateAssignment((Assignment) s, sb);
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else if (s is BinaryExpression)
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GenerateBinaryExpression((BinaryExpression) s, sb);
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else if (s is ParenthesisExpression)
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GenerateParenthesisExpression((ParenthesisExpression) s, sb);
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else if (s is UnaryExpression)
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GenerateUnaryExpression((UnaryExpression) s, sb);
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else if (s is IncrementDecrementExpression)
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GenerateIncrementDecrementExpression((IncrementDecrementExpression) s, sb);
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else if (s is TypecastExpression)
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GenerateTypecastExpression((TypecastExpression) s, sb);
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else if (s is FunctionCall)
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GenerateFunctionCall((FunctionCall) s, sb);
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else if (s is VectorConstant)
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GenerateVectorConstant((VectorConstant) s, sb);
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else if (s is RotationConstant)
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GenerateRotationConstant((RotationConstant) s, sb);
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else if (s is ListConstant)
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GenerateListConstant((ListConstant) s, sb);
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else if (s is Constant)
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GenerateConstant((Constant) s, sb);
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else if (s is IdentDotExpression)
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Generate(CheckName(((IdentDotExpression) s).Name) + "." + ((IdentDotExpression) s).Member, s, sb);
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else if (s is IdentExpression)
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GenerateIdentifier(((IdentExpression) s).Name, s, sb);
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else if (s is IDENT)
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Generate(CheckName(((TOKEN) s).yytext), s, sb);
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else
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{
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foreach (SYMBOL kid in s.kids)
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GenerateNodeToSB(s, kid,sb);
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}
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return;
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}
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/// <summary>
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/// Generates the code for a GlobalFunctionDefinition node.
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/// </summary>
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/// <param name="gf">The GlobalFunctionDefinition node.</param>
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/// <returns>String containing C# code for GlobalFunctionDefinition gf.</returns>
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private void GenerateGlobalFunctionDefinition(GlobalFunctionDefinition gf, StringBuilder sb)
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{
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// we need to separate the argument declaration list from other kids
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List<SYMBOL> argumentDeclarationListKids = new List<SYMBOL>();
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List<SYMBOL> remainingKids = new List<SYMBOL>();
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foreach (SYMBOL kid in gf.kids)
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if (kid is ArgumentDeclarationList)
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argumentDeclarationListKids.Add(kid);
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else
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remainingKids.Add(kid);
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GenerateIndented(String.Format("{0} {1}(", gf.ReturnType, CheckName(gf.Name)), gf, sb);
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// print the state arguments, if any
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foreach (SYMBOL kid in argumentDeclarationListKids)
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GenerateArgumentDeclarationList((ArgumentDeclarationList) kid, sb);
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GenerateLine(")", sb);
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foreach (SYMBOL kid in remainingKids)
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GenerateNodeToSB(gf, kid,sb);
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}
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/// <summary>
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/// Generates the code for a GlobalVariableDeclaration node.
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/// </summary>
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/// <param name="gv">The GlobalVariableDeclaration node.</param>
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/// <returns>String containing C# code for GlobalVariableDeclaration gv.</returns>
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private void GenerateGlobalVariableDeclaration(GlobalVariableDeclaration gv, StringBuilder sb)
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{
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foreach (SYMBOL s in gv.kids)
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{
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Indent(sb);
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GenerateNodeToSB(gv, s ,sb);
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GenerateLine(";", sb);
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}
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}
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/// <summary>
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/// Generates the code for a State node.
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/// </summary>
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/// <param name="s">The State node.</param>
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/// <returns>String containing C# code for State s.</returns>
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private void GenerateState(State s, StringBuilder sb)
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{
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foreach (SYMBOL kid in s.kids)
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if (kid is StateEvent)
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GenerateStateEvent((StateEvent) kid, s.Name, sb);
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}
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/// <summary>
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/// Generates the code for a StateEvent node.
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/// </summary>
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/// <param name="se">The StateEvent node.</param>
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/// <param name="parentStateName">The name of the parent state.</param>
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/// <returns>String containing C# code for StateEvent se.</returns>
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private void GenerateStateEvent(StateEvent se, string parentStateName, StringBuilder sb)
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{
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// we need to separate the argument declaration list from other kids
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List<SYMBOL> argumentDeclarationListKids = new List<SYMBOL>();
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List<SYMBOL> remainingKids = new List<SYMBOL>();
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foreach (SYMBOL kid in se.kids)
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if (kid is ArgumentDeclarationList)
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argumentDeclarationListKids.Add(kid);
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else
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remainingKids.Add(kid);
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// "state" (function) declaration
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GenerateIndented(String.Format("public void {0}_event_{1}(", parentStateName, se.Name), se , sb);
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// print the state arguments, if any
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foreach (SYMBOL kid in argumentDeclarationListKids)
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GenerateArgumentDeclarationList((ArgumentDeclarationList) kid, sb);
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GenerateLine(")", sb);
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foreach (SYMBOL kid in remainingKids)
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GenerateNodeToSB(se, kid, sb);
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}
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/// <summary>
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/// Generates the code for an ArgumentDeclarationList node.
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/// </summary>
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/// <param name="adl">The ArgumentDeclarationList node.</param>
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/// <returns>String containing C# code for ArgumentDeclarationList adl.</returns>
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private void GenerateArgumentDeclarationList(ArgumentDeclarationList adl, StringBuilder sb)
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{
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int comma = adl.kids.Count - 1; // tells us whether to print a comma
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foreach (Declaration d in adl.kids)
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{
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Generate(String.Format("{0} {1}", d.Datatype, CheckName(d.Id)), d, sb);
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if (0 < comma--)
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Generate(", ", sb);
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}
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}
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/// <summary>
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/// Generates the code for an ArgumentList node.
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/// </summary>
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/// <param name="al">The ArgumentList node.</param>
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/// <returns>String containing C# code for ArgumentList al.</returns>
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private void GenerateArgumentList(ArgumentList al, StringBuilder sb)
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{
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int comma = al.kids.Count - 1; // tells us whether to print a comma
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foreach (SYMBOL s in al.kids)
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{
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GenerateNodeToSB(al, s, sb);
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if (0 < comma--)
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Generate(", ", sb);
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}
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}
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/// <summary>
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/// Generates the code for a CompoundStatement node.
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/// </summary>
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/// <param name="cs">The CompoundStatement node.</param>
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/// <returns>String containing C# code for CompoundStatement cs.</returns>
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private void GenerateCompoundStatement(SYMBOL previousSymbol, CompoundStatement cs, StringBuilder sb)
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{
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// opening brace
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GenerateIndentedLine("{", sb);
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m_braceCount++;
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if (m_insertCoopTerminationChecks)
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{
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// We have to check in event functions as well because the user can manually call these.
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if (previousSymbol is GlobalFunctionDefinition
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|| previousSymbol is WhileStatement
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|| previousSymbol is DoWhileStatement
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|| previousSymbol is ForLoop
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|| previousSymbol is StateEvent)
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GenerateIndentedLine(m_coopTerminationCheck, sb);
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}
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foreach (SYMBOL kid in cs.kids)
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GenerateNodeToSB(cs, kid, sb);
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// closing brace
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m_braceCount--;
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GenerateIndentedLine("}", sb);
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}
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/// <summary>
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/// Generates the code for a Declaration node.
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/// </summary>
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/// <param name="d">The Declaration node.</param>
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/// <returns>String containing C# code for Declaration d.</returns>
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private void GenerateDeclaration(Declaration d, StringBuilder sb)
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{
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Generate(String.Format("{0} {1}", d.Datatype, CheckName(d.Id)), d, sb);
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}
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/// <summary>
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/// Generates the code for a Statement node.
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/// </summary>
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/// <param name="s">The Statement node.</param>
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/// <returns>String containing C# code for Statement s.</returns>
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private void GenerateStatement(SYMBOL previousSymbol, Statement s, StringBuilder sb)
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{
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string retstr = String.Empty;
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bool printSemicolon = true;
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bool transformToBlock = false;
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if (m_insertCoopTerminationChecks)
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{
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// A non-braced single line do while structure cannot contain multiple statements.
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// So to insert the termination check we change this to a braced control structure instead.
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if (previousSymbol is WhileStatement
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|| previousSymbol is DoWhileStatement
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|| previousSymbol is ForLoop)
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{
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transformToBlock = true;
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// FIXME: This will be wrongly indented because the previous for/while/dowhile will have already indented.
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GenerateIndentedLine("{", sb);
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GenerateIndentedLine(m_coopTerminationCheck, sb);
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}
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}
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Indent(sb);
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if (0 < s.kids.Count)
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{
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// Jump label prints its own colon, we don't need a semicolon.
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printSemicolon = !(s.kids.Top is JumpLabel);
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|
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// If we encounter a lone Ident, we skip it, since that's a C#
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// (MONO) error.
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if (!(s.kids.Top is IdentExpression && 1 == s.kids.Count))
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foreach (SYMBOL kid in s.kids)
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GenerateNodeToSB(s, kid, sb);
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}
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if (printSemicolon)
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GenerateLine(";", sb);
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if (transformToBlock)
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{
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// FIXME: This will be wrongly indented because the for/while/dowhile is currently handling the unindent
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GenerateIndentedLine("}", sb);
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}
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}
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|
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/// <summary>
|
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/// Generates the code for an Assignment node.
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/// </summary>
|
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/// <param name="a">The Assignment node.</param>
|
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/// <returns>String containing C# code for Assignment a.</returns>
|
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private void GenerateAssignment(Assignment a, StringBuilder sb)
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{
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List<string> identifiers = new List<string>();
|
|
checkForMultipleAssignments(identifiers, a);
|
|
|
|
GenerateNodeToSB(a, (SYMBOL) a.kids.Pop(), sb);
|
|
Generate(String.Format(" {0} ", a.AssignmentType), a, sb);
|
|
foreach (SYMBOL kid in a.kids)
|
|
GenerateNodeToSB(a, kid, sb);
|
|
}
|
|
|
|
// This code checks for LSL of the following forms, and generates a
|
|
// warning if it finds them.
|
|
//
|
|
// list l = [ "foo" ];
|
|
// l = (l=[]) + l + ["bar"];
|
|
// (produces l=["foo","bar"] in SL but l=["bar"] in OS)
|
|
//
|
|
// integer i;
|
|
// integer j;
|
|
// i = (j = 3) + (j = 4) + (j = 5);
|
|
// (produces j=3 in SL but j=5 in OS)
|
|
//
|
|
// Without this check, that code passes compilation, but does not do what
|
|
// the end user expects, because LSL in SL evaluates right to left instead
|
|
// of left to right.
|
|
//
|
|
// The theory here is that producing an error and alerting the end user that
|
|
// something needs to change is better than silently generating incorrect code.
|
|
private void checkForMultipleAssignments(List<string> identifiers, SYMBOL s)
|
|
{
|
|
if (s is Assignment)
|
|
{
|
|
Assignment a = (Assignment)s;
|
|
string newident = null;
|
|
|
|
if (a.kids[0] is Declaration)
|
|
{
|
|
newident = ((Declaration)a.kids[0]).Id;
|
|
}
|
|
else if (a.kids[0] is IDENT)
|
|
{
|
|
newident = ((IDENT)a.kids[0]).yytext;
|
|
}
|
|
else if (a.kids[0] is IdentDotExpression)
|
|
{
|
|
newident = ((IdentDotExpression)a.kids[0]).Name; // +"." + ((IdentDotExpression)a.kids[0]).Member;
|
|
}
|
|
else
|
|
{
|
|
AddWarning(String.Format("Multiple assignments checker internal error '{0}' at line {1} column {2}.", a.kids[0].GetType(), ((SYMBOL)a.kids[0]).Line - 1, ((SYMBOL)a.kids[0]).Position));
|
|
}
|
|
|
|
if (identifiers.Contains(newident))
|
|
{
|
|
AddWarning(String.Format("Multiple assignments to '{0}' at line {1} column {2}; results may differ between LSL and OSSL.", newident, ((SYMBOL)a.kids[0]).Line - 1, ((SYMBOL)a.kids[0]).Position));
|
|
}
|
|
identifiers.Add(newident);
|
|
}
|
|
|
|
int index;
|
|
for (index = 0; index < s.kids.Count; index++)
|
|
{
|
|
checkForMultipleAssignments(identifiers, (SYMBOL) s.kids[index]);
|
|
}
|
|
}
|
|
|
|
/// <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 void GenerateReturnStatement(ReturnStatement rs, StringBuilder sb)
|
|
{
|
|
Generate("return ", rs, sb);
|
|
|
|
foreach (SYMBOL kid in rs.kids)
|
|
GenerateNodeToSB(rs, kid, sb);
|
|
}
|
|
|
|
/// <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 void GenerateJumpLabel(JumpLabel jl, StringBuilder sb)
|
|
{
|
|
string labelStatement;
|
|
|
|
if (m_insertCoopTerminationChecks)
|
|
labelStatement = m_coopTerminationCheck;
|
|
else
|
|
labelStatement = "NoOp();";
|
|
|
|
GenerateLine(String.Format("{0}: {1}", CheckName(jl.LabelName), labelStatement), jl, sb);
|
|
}
|
|
|
|
/// <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 void GenerateJumpStatement(JumpStatement js, StringBuilder sb)
|
|
{
|
|
Generate(String.Format("goto {0}", CheckName(js.TargetName)), js, sb);
|
|
}
|
|
|
|
/// <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 void GenerateIfStatement(IfStatement ifs, StringBuilder sb)
|
|
{
|
|
GenerateIndented("if (", ifs, sb);
|
|
GenerateNodeToSB(ifs, (SYMBOL) ifs.kids.Pop(), sb);
|
|
GenerateLine(")", sb);
|
|
|
|
// CompoundStatement handles indentation itself but we need to do it
|
|
// otherwise.
|
|
bool indentHere = ifs.kids.Top is Statement;
|
|
if (indentHere) m_braceCount++;
|
|
GenerateNodeToSB(ifs, (SYMBOL) ifs.kids.Pop(), sb);
|
|
if (indentHere) m_braceCount--;
|
|
|
|
if (0 < ifs.kids.Count) // do it again for an else
|
|
{
|
|
GenerateIndentedLine("else", ifs, sb);
|
|
|
|
indentHere = ifs.kids.Top is Statement;
|
|
if (indentHere) m_braceCount++;
|
|
GenerateNodeToSB(ifs, (SYMBOL) ifs.kids.Pop(), sb);
|
|
if (indentHere) m_braceCount--;
|
|
}
|
|
}
|
|
|
|
/// <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 void GenerateStateChange(StateChange sc, StringBuilder sb)
|
|
{
|
|
Generate(String.Format("state(\"{0}\")", sc.NewState), sc, sb);
|
|
}
|
|
|
|
/// <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 void GenerateWhileStatement(WhileStatement ws, StringBuilder sb)
|
|
{
|
|
GenerateIndented("while (", ws, sb);
|
|
GenerateNodeToSB(ws, (SYMBOL) ws.kids.Pop(), sb);
|
|
GenerateLine(")", sb);
|
|
|
|
// CompoundStatement handles indentation itself but we need to do it
|
|
// otherwise.
|
|
bool indentHere = ws.kids.Top is Statement;
|
|
if (indentHere) m_braceCount++;
|
|
GenerateNodeToSB(ws, (SYMBOL) ws.kids.Pop(), sb);
|
|
if (indentHere) m_braceCount--;
|
|
}
|
|
|
|
/// <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 void GenerateDoWhileStatement(DoWhileStatement dws, StringBuilder sb)
|
|
{
|
|
GenerateIndentedLine("do", dws, sb);
|
|
|
|
// CompoundStatement handles indentation itself but we need to do it
|
|
// otherwise.
|
|
bool indentHere = dws.kids.Top is Statement;
|
|
if (indentHere) m_braceCount++;
|
|
GenerateNodeToSB(dws, (SYMBOL) dws.kids.Pop(), sb);
|
|
if (indentHere) m_braceCount--;
|
|
|
|
GenerateIndented("while (", dws ,sb);
|
|
GenerateNodeToSB(dws, (SYMBOL) dws.kids.Pop(), sb);
|
|
GenerateLine(");", sb);
|
|
}
|
|
|
|
/// <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 void GenerateForLoop(ForLoop fl, StringBuilder sb)
|
|
{
|
|
GenerateIndented("for (", fl, sb);
|
|
|
|
// It's possible that we don't have an assignment, in which case
|
|
// the child will be null and we only print the semicolon.
|
|
// for (x = 0; x < 10; x++)
|
|
// ^^^^^
|
|
ForLoopStatement s = (ForLoopStatement) fl.kids.Pop();
|
|
if (null != s)
|
|
{
|
|
GenerateForLoopStatement(s, sb);
|
|
}
|
|
Generate("; ", sb);
|
|
// for (x = 0; x < 10; x++)
|
|
// ^^^^^^
|
|
GenerateNodeToSB(fl, (SYMBOL) fl.kids.Pop(), sb);
|
|
Generate("; ", sb);
|
|
// for (x = 0; x < 10; x++)
|
|
// ^^^
|
|
GenerateForLoopStatement((ForLoopStatement) fl.kids.Pop(), sb);
|
|
GenerateLine(")", sb);
|
|
|
|
// CompoundStatement handles indentation itself but we need to do it
|
|
// otherwise.
|
|
bool indentHere = fl.kids.Top is Statement;
|
|
if (indentHere) m_braceCount++;
|
|
GenerateNodeToSB(fl, (SYMBOL) fl.kids.Pop(), sb);
|
|
if (indentHere) m_braceCount--;
|
|
}
|
|
|
|
/// <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 void GenerateForLoopStatement(ForLoopStatement fls, StringBuilder sb)
|
|
{
|
|
int comma = fls.kids.Count - 1; // tells us whether to print a comma
|
|
|
|
// It's possible that all we have is an empty Ident, for example:
|
|
//
|
|
// for (x; x < 10; x++) { ... }
|
|
//
|
|
// Which is illegal in C# (MONO). We'll skip it.
|
|
if (fls.kids.Top is IdentExpression && 1 == fls.kids.Count)
|
|
return;
|
|
|
|
for (int i = 0; i < fls.kids.Count; i++)
|
|
{
|
|
SYMBOL s = (SYMBOL)fls.kids[i];
|
|
|
|
// Statements surrounded by parentheses in for loops
|
|
//
|
|
// e.g. for ((i = 0), (j = 7); (i < 10); (++i))
|
|
//
|
|
// are legal in LSL but not in C# so we need to discard the parentheses
|
|
//
|
|
// The following, however, does not appear to be legal in LLS
|
|
//
|
|
// for ((i = 0, j = 7); (i < 10); (++i))
|
|
//
|
|
// As of Friday 20th November 2009, the Linden Lab simulators appear simply never to compile or run this
|
|
// script but with no debug or warnings at all! Therefore, we won't deal with this yet (which looks
|
|
// like it would be considerably more complicated to handle).
|
|
while (s is ParenthesisExpression)
|
|
s = (SYMBOL)s.kids.Pop();
|
|
|
|
GenerateNodeToSB(fls, s, sb);
|
|
if (0 < comma--)
|
|
Generate(", ", sb);
|
|
}
|
|
}
|
|
|
|
/// <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 void GenerateBinaryExpression(BinaryExpression be, StringBuilder sb)
|
|
{
|
|
if (be.ExpressionSymbol.Equals("&&") || be.ExpressionSymbol.Equals("||"))
|
|
{
|
|
// special case handling for logical and/or, see Mantis 3174
|
|
sb.Append("((bool)(");
|
|
GenerateNodeToSB(be, (SYMBOL)be.kids.Pop(), sb);
|
|
sb.Append("))");
|
|
Generate(String.Format(" {0} ", be.ExpressionSymbol.Substring(0,1)), be, sb);
|
|
sb.Append("((bool)(");
|
|
foreach (SYMBOL kid in be.kids)
|
|
GenerateNodeToSB(be, kid, sb);
|
|
sb.Append("))");
|
|
}
|
|
else
|
|
{
|
|
GenerateNodeToSB(be, (SYMBOL)be.kids.Pop(), sb);
|
|
Generate(String.Format(" {0} ", be.ExpressionSymbol), be, sb);
|
|
foreach (SYMBOL kid in be.kids)
|
|
GenerateNodeToSB(be, kid, sb);
|
|
}
|
|
}
|
|
|
|
/// <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 void GenerateUnaryExpression(UnaryExpression ue, StringBuilder sb)
|
|
{
|
|
Generate(ue.UnarySymbol, ue, sb);
|
|
GenerateNodeToSB(ue, (SYMBOL) ue.kids.Pop(), sb);
|
|
}
|
|
|
|
/// <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 void GenerateParenthesisExpression(ParenthesisExpression pe, StringBuilder sb)
|
|
{
|
|
string retstr = String.Empty;
|
|
|
|
Generate("(", sb);
|
|
foreach (SYMBOL kid in pe.kids)
|
|
GenerateNodeToSB(pe, kid, sb);
|
|
Generate(")", sb);
|
|
}
|
|
|
|
/// <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 void GenerateIncrementDecrementExpression(IncrementDecrementExpression ide, StringBuilder sb)
|
|
{
|
|
if (0 < ide.kids.Count)
|
|
{
|
|
IdentDotExpression dot = (IdentDotExpression) ide.kids.Top;
|
|
Generate(String.Format("{0}", ide.PostOperation ? CheckName(dot.Name) + "." + dot.Member + ide.Operation : ide.Operation + CheckName(dot.Name) + "." + dot.Member), ide, sb);
|
|
}
|
|
else
|
|
Generate(String.Format("{0}", ide.PostOperation ? CheckName(ide.Name) + ide.Operation : ide.Operation + CheckName(ide.Name)), ide, sb);
|
|
}
|
|
|
|
/// <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 void GenerateTypecastExpression(TypecastExpression te, StringBuilder sb)
|
|
{
|
|
// we wrap all typecasted statements in parentheses
|
|
Generate(String.Format("({0}) (", te.TypecastType), te, sb);
|
|
GenerateNodeToSB(te, (SYMBOL) te.kids.Pop(), sb);
|
|
Generate(")", sb);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates the code for an identifier
|
|
/// </summary>
|
|
/// <param name="id">The symbol name</param>
|
|
/// <param name="s">The Symbol node.</param>
|
|
/// <returns>String containing C# code for identifier reference.</returns>
|
|
private void GenerateIdentifier(string id, SYMBOL s, StringBuilder sb)
|
|
{
|
|
if (m_comms != null)
|
|
{
|
|
object value = m_comms.LookupModConstant(id);
|
|
if (value != null)
|
|
{
|
|
string retval = null;
|
|
if (value is int)
|
|
retval = String.Format("new LSL_Types.LSLInteger({0})",((int)value).ToString());
|
|
else if (value is float)
|
|
retval = String.Format("new LSL_Types.LSLFloat({0})",((float)value).ToString());
|
|
else if (value is string)
|
|
retval = String.Format("new LSL_Types.LSLString(\"{0}\")",((string)value));
|
|
else if (value is OpenMetaverse.UUID)
|
|
retval = String.Format("new LSL_Types.key(\"{0}\")",((OpenMetaverse.UUID)value).ToString());
|
|
else if (value is OpenMetaverse.Vector3)
|
|
retval = String.Format("new LSL_Types.Vector3(\"{0}\")",((OpenMetaverse.Vector3)value).ToString());
|
|
else if (value is OpenMetaverse.Quaternion)
|
|
retval = String.Format("new LSL_Types.Quaternion(\"{0}\")",((OpenMetaverse.Quaternion)value).ToString());
|
|
else retval = id;
|
|
|
|
Generate(retval, s, sb);
|
|
return;
|
|
}
|
|
}
|
|
|
|
Generate(CheckName(id), s, sb);
|
|
return;
|
|
}
|
|
|
|
/// <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 void GenerateFunctionCall(FunctionCall fc, StringBuilder sb)
|
|
{
|
|
string modinvoke = null;
|
|
if (m_comms != null)
|
|
modinvoke = m_comms.LookupModInvocation(fc.Id);
|
|
|
|
if (modinvoke != null)
|
|
{
|
|
if (fc.kids[0] is ArgumentList)
|
|
{
|
|
if ((fc.kids[0] as ArgumentList).kids.Count == 0)
|
|
Generate(String.Format("{0}(\"{1}\"",modinvoke,fc.Id), fc, sb);
|
|
else
|
|
Generate(String.Format("{0}(\"{1}\",",modinvoke,fc.Id), fc, sb);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Generate(String.Format("{0}(", CheckName(fc.Id)), fc, sb);
|
|
}
|
|
|
|
foreach (SYMBOL kid in fc.kids)
|
|
GenerateNodeToSB(fc, kid, sb);
|
|
|
|
Generate(")", sb);
|
|
}
|
|
|
|
/// <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 void GenerateConstant(Constant c, StringBuilder sb)
|
|
{
|
|
// 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+"\")";
|
|
}
|
|
else if ("LSL_Types.key" == c.Type)
|
|
{
|
|
c.Value = "new LSL_Types.key(\""+c.Value+"\")";
|
|
}
|
|
|
|
Generate(c.Value, c, sb);
|
|
}
|
|
|
|
/// <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 void GenerateVectorConstant(VectorConstant vc, StringBuilder sb)
|
|
{
|
|
Generate(String.Format("new {0}(", vc.Type), vc, sb);
|
|
GenerateNodeToSB(vc, (SYMBOL) vc.kids.Pop(), sb);
|
|
Generate(", ", sb);
|
|
GenerateNodeToSB(vc, (SYMBOL) vc.kids.Pop(), sb);
|
|
Generate(", ", sb);
|
|
GenerateNodeToSB(vc, (SYMBOL) vc.kids.Pop(), sb);
|
|
Generate(")", sb);
|
|
}
|
|
|
|
/// <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 void GenerateRotationConstant(RotationConstant rc, StringBuilder sb)
|
|
{
|
|
Generate(String.Format("new {0}(", rc.Type), rc, sb);
|
|
GenerateNodeToSB(rc, (SYMBOL) rc.kids.Pop(), sb);
|
|
Generate(", ", sb);
|
|
GenerateNodeToSB(rc, (SYMBOL) rc.kids.Pop(), sb);
|
|
Generate(", ", sb);
|
|
GenerateNodeToSB(rc, (SYMBOL) rc.kids.Pop(), sb);
|
|
Generate(", ", sb);
|
|
GenerateNodeToSB(rc, (SYMBOL) rc.kids.Pop(), sb);
|
|
Generate(")", sb);
|
|
}
|
|
|
|
/// <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 void GenerateListConstant(ListConstant lc, StringBuilder sb)
|
|
{
|
|
Generate(String.Format("new {0}(", lc.Type), lc, sb);
|
|
|
|
foreach (SYMBOL kid in lc.kids)
|
|
GenerateNodeToSB(lc, kid, sb);
|
|
|
|
Generate(")", sb);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Prints a newline.
|
|
/// </summary>
|
|
/// <returns>A newline.</returns>
|
|
private void GenerateLine(StringBuilder sb)
|
|
{
|
|
sb.Append("\n");
|
|
m_CSharpLine++;
|
|
m_CSharpCol = 1;
|
|
}
|
|
|
|
/// <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 void GenerateLine(string s, StringBuilder sb)
|
|
{
|
|
sb.Append(s);
|
|
sb.Append("\n");
|
|
m_CSharpLine++;
|
|
m_CSharpCol = 1;
|
|
}
|
|
|
|
/// <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 void GenerateLine(string s, SYMBOL sym, StringBuilder sb)
|
|
{
|
|
Generate(s, sym, sb);
|
|
sb.Append("\n");
|
|
|
|
m_CSharpLine++;
|
|
m_CSharpCol = 1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Prints text.
|
|
/// </summary>
|
|
/// <param name="s">String of text to print.</param>
|
|
/// <returns>String s.</returns>
|
|
private void Generate(string s, StringBuilder sb)
|
|
{
|
|
sb.Append(s);
|
|
m_CSharpCol += s.Length;
|
|
}
|
|
|
|
/// <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 void Generate(string s, SYMBOL sym, StringBuilder sb)
|
|
{
|
|
sb.Append(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;
|
|
}
|
|
|
|
/// <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 void GenerateIndentedLine(string s, StringBuilder sb)
|
|
{
|
|
GenerateIndentedLine(s, null, sb);
|
|
}
|
|
|
|
/// <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 void GenerateIndentedLine(string s, SYMBOL sym, StringBuilder sb)
|
|
{
|
|
GenerateIndented(s, sym , sb );
|
|
sb.Append("\n");
|
|
m_CSharpLine++;
|
|
m_CSharpCol = 1;
|
|
}
|
|
|
|
/// <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 void GenerateIndented(string s, SYMBOL sym, StringBuilder sb)
|
|
{
|
|
Indent(sb);
|
|
sb.Append(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;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Prints correct indentation.
|
|
/// </summary>
|
|
/// <returns>Indentation based on brace count.</returns>
|
|
private void Indent(StringBuilder sb)
|
|
{
|
|
for (int i = 0; i < m_braceCount; i++)
|
|
{
|
|
sb.Append(" ");
|
|
m_CSharpCol += 4;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the passed name with an underscore prepended if that name is a reserved word in C#
|
|
/// and not resevered in LSL otherwise it just returns the passed name.
|
|
///
|
|
/// This makes no attempt to cache the results to minimise future lookups. For a non trivial
|
|
/// scripts the number of unique identifiers could easily grow to the size of the reserved word
|
|
/// list so maintaining a list or dictionary and doing the lookup there firstwould probably not
|
|
/// give any real speed advantage.
|
|
///
|
|
/// I believe there is a class Microsoft.CSharp.CSharpCodeProvider that has a function
|
|
/// CreateValidIdentifier(str) that will return either the value of str if it is not a C#
|
|
/// key word or "_"+str if it is. But availability under Mono?
|
|
/// </summary>
|
|
private string CheckName(string s)
|
|
{
|
|
if (CSReservedWords.IsReservedWord(s))
|
|
return "@" + s;
|
|
else
|
|
return s;
|
|
}
|
|
}
|
|
}
|