1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | * and the BEACON Center for the Study of Evolution in Action.
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5 | *
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6 | * This file is part of HeuristicLab.
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7 | *
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8 | * HeuristicLab is free software: you can redistribute it and/or modify
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9 | * it under the terms of the GNU General Public License as published by
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10 | * the Free Software Foundation, either version 3 of the License, or
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11 | * (at your option) any later version.
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12 | *
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13 | * HeuristicLab is distributed in the hope that it will be useful,
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 | * GNU General Public License for more details.
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17 | *
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18 | * You should have received a copy of the GNU General Public License
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19 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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20 | */
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21 | #endregion
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22 |
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23 | using System.Diagnostics.Contracts;
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24 |
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25 | namespace HeuristicLab.Algorithms.DataAnalysis.MctsSymbolicRegression {
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26 | internal class CodeGenerator {
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27 |
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28 | public const int MaxCodeLength = 10000;
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29 | public const int MaxConstants = 100;
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30 |
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31 | private readonly byte[] codeArray = new byte[MaxCodeLength];
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32 | private int pc;
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33 | private int nParams;
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34 |
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35 | public void Reset() {
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36 | pc = 0;
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37 | nParams = 0;
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38 | }
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39 |
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40 | public void Emit1(OpCodes code) {
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41 | codeArray[pc++] = (byte)code;
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42 | if (code == OpCodes.LoadParamN) nParams++;
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43 | }
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44 |
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45 | public void Emit2(OpCodes code, short arg) {
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46 | Contract.Assert(code == OpCodes.LoadVar); // only loadVar opcode has params
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47 | Emit1(code);
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48 | codeArray[pc++] = (byte)(arg >> 8);
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49 | codeArray[pc++] = (byte)(arg & 0xFF);
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50 | }
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51 |
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52 | public void GetCode(out byte[] code, out int nParams) {
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53 | code = codeArray;
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54 | nParams = this.nParams;
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55 | }
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56 | }
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57 | }
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