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-rw-r--r--OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/LSL2CSCodeTransformer.cs183
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diff --git a/OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/LSL2CSCodeTransformer.cs b/OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/LSL2CSCodeTransformer.cs
deleted file mode 100644
index 8abf3b9..0000000
--- a/OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/LSL/LSL2CSCodeTransformer.cs
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@@ -1,183 +0,0 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSim Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections.Generic;
30using Tools;
31
32namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.LSL
33{
34 public class LSL2CSCodeTransformer
35 {
36 private SYMBOL m_astRoot = null;
37 private static Dictionary<string, string> m_datatypeLSL2OpenSim = null;
38
39 /// <summary>
40 /// Pass the new CodeTranformer an abstract syntax tree.
41 /// </summary>
42 /// <param name="astRoot">The root node of the AST.</param>
43 public LSL2CSCodeTransformer(SYMBOL astRoot)
44 {
45 m_astRoot = astRoot;
46
47 // let's populate the dictionary
48 if (null == m_datatypeLSL2OpenSim)
49 {
50 m_datatypeLSL2OpenSim = new Dictionary<string, string>();
51 m_datatypeLSL2OpenSim.Add("integer", "LSL_Types.LSLInteger");
52 m_datatypeLSL2OpenSim.Add("float", "LSL_Types.LSLFloat");
53 //m_datatypeLSL2OpenSim.Add("key", "LSL_Types.key"); // key doesn't seem to be used
54 m_datatypeLSL2OpenSim.Add("key", "LSL_Types.LSLString");
55 m_datatypeLSL2OpenSim.Add("string", "LSL_Types.LSLString");
56 m_datatypeLSL2OpenSim.Add("vector", "LSL_Types.Vector3");
57 m_datatypeLSL2OpenSim.Add("rotation", "LSL_Types.Quaternion");
58 m_datatypeLSL2OpenSim.Add("list", "LSL_Types.list");
59 }
60 }
61
62 /// <summary>
63 /// Transform the code in the AST we have.
64 /// </summary>
65 /// <returns>The root node of the transformed AST</returns>
66 public SYMBOL Transform()
67 {
68 foreach (SYMBOL s in m_astRoot.kids)
69 TransformNode(s);
70
71 return m_astRoot;
72 }
73
74 /// <summary>
75 /// Recursively called to transform each type of node. Will transform this
76 /// node, then all it's children.
77 /// </summary>
78 /// <param name="s">The current node to transform.</param>
79 private void TransformNode(SYMBOL s)
80 {
81 // make sure to put type lower in the inheritance hierarchy first
82 // ie: since IdentConstant and StringConstant inherit from Constant,
83 // put IdentConstant and StringConstant before Constant
84 if (s is Declaration)
85 ((Declaration) s).Datatype = m_datatypeLSL2OpenSim[((Declaration) s).Datatype];
86 else if (s is Constant)
87 ((Constant) s).Type = m_datatypeLSL2OpenSim[((Constant) s).Type];
88 else if (s is TypecastExpression)
89 ((TypecastExpression) s).TypecastType = m_datatypeLSL2OpenSim[((TypecastExpression) s).TypecastType];
90 else if (s is GlobalFunctionDefinition && "void" != ((GlobalFunctionDefinition) s).ReturnType) // we don't need to translate "void"
91 ((GlobalFunctionDefinition) s).ReturnType = m_datatypeLSL2OpenSim[((GlobalFunctionDefinition) s).ReturnType];
92
93 for (int i = 0; i < s.kids.Count; i++)
94 {
95 if (!(s is Assignment || s is ArgumentDeclarationList) && s.kids[i] is Declaration)
96 AddImplicitInitialization(s, i);
97
98 TransformNode((SYMBOL) s.kids[i]);
99 }
100 }
101
102 /// <summary>
103 /// Replaces an instance of the node at s.kids[didx] with an assignment
104 /// node. The assignment node has the Declaration node on the left hand
105 /// side and a default initializer on the right hand side.
106 /// </summary>
107 /// <param name="s">
108 /// The node containing the Declaration node that needs replacing.
109 /// </param>
110 /// <param name="didx">Index of the Declaration node to replace.</param>
111 private void AddImplicitInitialization(SYMBOL s, int didx)
112 {
113 // We take the kids for a while to play with them.
114 int sKidSize = s.kids.Count;
115 object [] sKids = new object[sKidSize];
116 for (int i = 0; i < sKidSize; i++)
117 sKids[i] = s.kids.Pop();
118
119 // The child to be changed.
120 Declaration currentDeclaration = (Declaration) sKids[didx];
121
122 // We need an assignment node.
123 Assignment newAssignment = new Assignment(currentDeclaration.yyps,
124 currentDeclaration,
125 GetZeroConstant(currentDeclaration.yyps, currentDeclaration.Datatype),
126 "=");
127 sKids[didx] = newAssignment;
128
129 // Put the kids back where they belong.
130 for (int i = 0; i < sKidSize; i++)
131 s.kids.Add(sKids[i]);
132 }
133
134 /// <summary>
135 /// Generates the node structure required to generate a default
136 /// initialization.
137 /// </summary>
138 /// <param name="p">
139 /// Tools.Parser instance to use when instantiating nodes.
140 /// </param>
141 /// <param name="constantType">String describing the datatype.</param>
142 /// <returns>
143 /// A SYMBOL node conaining the appropriate structure for intializing a
144 /// constantType.
145 /// </returns>
146 private SYMBOL GetZeroConstant(Parser p, string constantType)
147 {
148 switch (constantType)
149 {
150 case "integer":
151 return new Constant(p, constantType, "0");
152 case "float":
153 return new Constant(p, constantType, "0.0");
154 case "string":
155 case "key":
156 return new Constant(p, constantType, "");
157 case "list":
158 ArgumentList al = new ArgumentList(p);
159 return new ListConstant(p, al);
160 case "vector":
161 Constant vca = new Constant(p, "float", "0.0");
162 Constant vcb = new Constant(p, "float", "0.0");
163 Constant vcc = new Constant(p, "float", "0.0");
164 ConstantExpression vcea = new ConstantExpression(p, vca);
165 ConstantExpression vceb = new ConstantExpression(p, vcb);
166 ConstantExpression vcec = new ConstantExpression(p, vcc);
167 return new VectorConstant(p, vcea, vceb, vcec);
168 case "rotation":
169 Constant rca = new Constant(p, "float", "0.0");
170 Constant rcb = new Constant(p, "float", "0.0");
171 Constant rcc = new Constant(p, "float", "0.0");
172 Constant rcd = new Constant(p, "float", "0.0");
173 ConstantExpression rcea = new ConstantExpression(p, rca);
174 ConstantExpression rceb = new ConstantExpression(p, rcb);
175 ConstantExpression rcec = new ConstantExpression(p, rcc);
176 ConstantExpression rced = new ConstantExpression(p, rcd);
177 return new RotationConstant(p, rcea, rceb, rcec, rced);
178 default:
179 return null; // this will probably break stuff
180 }
181 }
182 }
183}
generated by cgit v1.1 at 2024-08-24 12:07:54 +0000