1 | /* HeuristicLab
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2 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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3 | *
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4 | * This file is part of HeuristicLab.
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5 | *
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6 | * HeuristicLab is free software: you can redistribute it and/or modify
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7 | * it under the terms of the GNU General Public License as published by
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8 | * the Free Software Foundation, either version 3 of the License, or
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9 | * (at your option) any later version.
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10 | *
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11 | * HeuristicLab is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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18 | */
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19 |
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20 | // Coco/R grammar for the GPDL compiler
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21 |
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22 | $namespace=HeuristicLab.Problems.GPDL
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23 |
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24 | using System.Text;
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25 | using System.Collections.Generic;
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26 | using System.Linq;
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27 | using IEnumerableConstraintNode = System.Collections.Generic.IEnumerable<ConstraintNode>;
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28 |
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29 | COMPILER GPDef
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30 | public GPDefNode AbstractSyntaxTree { get; private set; }
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31 |
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32 | CHARACTERS
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33 | letter = 'A'..'Z' + 'a'..'z'.
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34 | digit = '0'..'9'.
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35 |
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36 | TOKENS
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37 | ident = letter {letter | digit} .
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38 |
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39 | COMMENTS
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40 | FROM "/*" TO "*/" NESTED
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41 |
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42 | IGNORE '\t' + '\r' + '\n'
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43 |
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44 |
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45 | PRODUCTIONS
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46 |
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47 | SourceCode<out string src> = (. src = ""; .)
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48 | "<<" (. int beg = la.pos; .)
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49 | {ANY} (. int end = la.pos; .)
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50 | ">>" (. if(end>beg) src = scanner.buffer.GetString(beg, end); .)
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51 | .
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52 |
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53 | GPDef = (.
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54 | RuleNode ruleNode = null;
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55 | GPDefNode gpDef = new GPDefNode();
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56 | NonTerminalNode ntNode = null;
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57 | FitnessFunctionNode fitnessFunNode = null;
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58 | TerminalNode tNode = null;
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59 | string src = "";
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60 | .)
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61 | "PROBLEM" ident (. gpDef.Name = t.val; .)
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62 | ["CODE" SourceCode<out src> (. gpDef.ClassCodeNode = new CodeNode{SrcCode = src}; .)
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63 | ]
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64 | ["INIT" SourceCode<out src> (. gpDef.InitCodeNode = new CodeNode{SrcCode = src}; .)
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65 | ]
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66 |
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67 | "NONTERMINALS" { NonterminalDecl<out ntNode> (. if(gpDef.IsSymbolDefined(ntNode)) {
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68 | SemErr("Duplicate non-terminal symbol: " + ntNode.Ident);
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69 | } else {
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70 | gpDef.NonTerminals.Add(ntNode);
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71 | }
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72 | .)
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73 | } (. if(!gpDef.NonTerminals.Any())
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74 | SemErr("No non-terminal symbols defined.");
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75 | .)
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76 | "TERMINALS" { TerminalDecl<out tNode> (. if(gpDef.IsSymbolDefined(tNode)) {
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77 | SemErr("Duplicate terminal symbol: " + tNode.Ident);
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78 | } else {
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79 | gpDef.Terminals.Add(tNode);
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80 | }
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81 | .)
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82 | } (. if(!gpDef.Terminals.Any())
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83 | SemErr("No terminal symbols defined.");
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84 | .)
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85 | "RULES" { RuleDef<out ruleNode> (.
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86 | if(!gpDef.IsNonTerminalDefined(ruleNode.NtSymbol)) {
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87 | SemErr("Non-terminal symbol " + ruleNode.NtSymbol + " is not defined in the NONTERMINALS section.");
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88 | } else if(gpDef.IsRuleDefined(ruleNode)) {
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89 | SemErr("Duplicate rule definition for non-terminal symbol " + ruleNode.NtSymbol);
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90 | } else {
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91 | gpDef.Rules.Add(ruleNode);
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92 | }
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93 | .)
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94 | } (.
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95 | var undefinedNT = gpDef.UndefinedNonTerminals();
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96 | if(!string.IsNullOrEmpty(undefinedNT)) {
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97 | SemErr("Rules missing in the RULES section for: " + undefinedNT);
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98 | }
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99 | .)
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100 | (. fitnessFunNode = new FitnessFunctionNode();
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101 | gpDef.FitnessFunctionNode = fitnessFunNode;
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102 | .)
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103 | ("MAXIMIZE" (. fitnessFunNode.Maximization = true; .)
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104 | | "MINIMIZE" (. fitnessFunNode.Maximization = false; .)
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105 | )
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106 | SourceCode<out src> (. fitnessFunNode.SrcCode = src; .)
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107 | (. if(errors.count > 0) throw new FatalError("Syntactic or semantic errors found."); .)
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108 | "END" ident (.
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109 | AbstractSyntaxTree = gpDef;
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110 | .)
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111 | '.'
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112 | .
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113 |
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114 |
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115 | /******************************************************/
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116 | SemAction<out RuleActionNode action> = (. RuleActionNode myAction = null; action = null; string src = ""; .)
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117 | "SEM" SourceCode<out src> (.
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118 | myAction = new RuleActionNode();
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119 | myAction.SrcCode = src;
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120 | action = myAction;
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121 | .)
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122 | .
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123 |
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124 | /******************************************************/
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125 | NonterminalDecl<out NonTerminalNode ntNode> = (. string identStr = ""; ntNode = null; string src = ""; .)
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126 | ident (. identStr = t.val; .)
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127 | [ SourceCode<out src> ] (.
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128 | var myNtNode = new NonTerminalNode();
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129 | ntNode = myNtNode;
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130 | myNtNode.Ident = identStr;
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131 | myNtNode.FormalParameters = src;
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132 | .)
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133 | '.'
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134 | .
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135 |
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136 | /******************************************************/
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137 | TerminalDecl<out TerminalNode tNode> = (.
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138 | string identStr = "";
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139 | tNode = null;
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140 | TerminalNode myTNode = null;
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141 | IEnumerableConstraintNode constraints = new List<ConstraintNode>();
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142 | string src = "";
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143 | .)
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144 | ident (. identStr = t.val; .)
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145 | [ SourceCode<out src> ] (.
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146 | myTNode = new TerminalNode();
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147 | tNode = myTNode;
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148 | myTNode.Ident = identStr;
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149 | myTNode.FormalParameters = src;
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150 | myTNode.FieldDefinitions = Util.ExtractFormalParameters(src);
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151 | .)
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152 | [ "CONSTRAINTS" ConstraintDef<out constraints>
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153 | ] (. myTNode.Constraints = constraints; .)
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154 | '.'
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155 | .
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156 |
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157 |
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158 | /******************************************************/
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159 | ConstraintDef<out IEnumerableConstraintNode constraints> = (.
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160 | List<ConstraintNode> constraintsList = new List<ConstraintNode>();
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161 | ConstraintNode n = null;
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162 | constraints = null;
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163 | .)
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164 | { ConstraintRule<out n> (. constraintsList.Add(n); .)
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165 | }
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166 | (. constraints = constraintsList; .)
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167 | .
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168 |
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169 | /******************************************************/
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170 | ConstraintRule<out ConstraintNode constraint> = (.
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171 | constraint = null;
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172 | .)
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173 | ident (. constraint = new ConstraintNode(t.val); .)
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174 | "IN" SetDefinition<constraint>
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175 | .
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176 |
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177 | /******************************************************/
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178 | SetDefinition<ConstraintNode constraint> = (. string src = ""; .)
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179 | ("SET" (. constraint.Type = ConstraintNodeType.Set; .)
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180 | SourceCode<out src> (. constraint.SetExpression = src; .)
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181 | |
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182 | "RANGE" (. constraint.Type = ConstraintNodeType.Range; .)
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183 | SourceCode<out src> (. constraint.RangeMinExpression = src; .)
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184 | ".." SourceCode<out src> (. constraint.RangeMaxExpression = src; .)
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185 | )
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186 | .
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187 |
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188 | /******************************************************/
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189 | RuleDef<out RuleNode rule> = (.
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190 | RuleExprNode expr = null;
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191 | string identStr = null;
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192 | RuleNode myRule = null;
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193 | rule = null;
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194 | string src = "";
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195 | .)
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196 | ident (. identStr = t.val; .)
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197 | [ SourceCode<out src> ] '=' (.
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198 | myRule = new RuleNode();
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199 | rule = myRule;
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200 | myRule.NtSymbol = identStr;
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201 | .)
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202 | ["LOCAL" SourceCode<out src> (.
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203 | myRule.LocalCode = src;
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204 | .)
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205 | ]
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206 | SynExpr<out expr> '.' (.
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207 | myRule.RuleExpr = expr;
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208 | .)
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209 | .
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210 |
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211 | /******************************************************/
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212 | SynExpr<out RuleExprNode expr > = (.
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213 | expr = null;
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214 | AlternativesNode alt = null;
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215 | .)
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216 | SynTerm<out expr> (.
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217 | alt = new AlternativesNode();
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218 | alt.Add(expr);
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219 | .)
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220 | {
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221 | '|' SynTerm<out expr> (. alt.Add(expr); expr = alt; .)
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222 | }
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223 | .
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224 |
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225 | /******************************************************/
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226 | SynTerm<out RuleExprNode expr> = (. SequenceNode seq = null; expr = null; .)
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227 | SynFact<out expr> (.
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228 | seq = new SequenceNode();
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229 | seq.Add(expr);
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230 | .)
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231 | {
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232 | SynFact<out expr> (. seq.Add(expr); expr = seq; .)
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233 | }
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234 | .
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235 |
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236 | /******************************************************/
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237 | SynFact<out RuleExprNode expr> = (.
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238 | string identStr = "";
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239 | RuleActionNode action = null;
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240 | expr = null;
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241 | string src = "";
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242 | .)
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243 | (ident (. identStr = t.val; .)
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244 | [ SourceCode<out src> ] (.
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245 | var callNode = new CallSymbolNode{Ident = identStr};
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246 | callNode.ActualParameter = src;
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247 | expr = callNode;
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248 | .)
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249 | // not implemented | "EPS"
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250 | // not implemented | '(' SynExpr<ref rules, mBuilder> ')'
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251 | // not implemented | '[' SynExpr<ref rules, mBuilder> ']'
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252 | // not implemented | '{' SynExpr<ref rules, mBuilder> '}'
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253 | | SemAction<out action> (. expr = action; .)
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254 | )
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255 | .
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256 |
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257 | END GPDef.
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