private PdlLexerRuleTerm VisitLexerRuleTermNode(IInternalTreeNode node) { PdlLexerRuleFactor factor = null; PdlLexerRuleTerm term = null; for (int c = 0; c < node.Children.Count; c++) { var child = node.Children[c]; if (child.NodeType != TreeNodeType.Internal) { continue; } var internalNode = child as IInternalTreeNode; var symbolValue = internalNode.Symbol.Value; if (PdlGrammar.LexerRuleFactor == symbolValue) { factor = VisitLexerRuleFactorNode(internalNode); } if (PdlGrammar.LexerRuleTerm == symbolValue) { term = VisitLexerRuleTermNode(internalNode); } } if (term is null) { return(new PdlLexerRuleTerm(factor)); } return(new PdlLexerRuleTermConcatenation(factor, term)); }
private PdlLexerRuleExpression VisitLexerRuleExpressionNode(IInternalTreeNode node) { PdlLexerRuleTerm term = null; PdlLexerRuleExpression expression = null; for (int c = 0; c < node.Children.Count; c++) { var child = node.Children[c]; if (child.NodeType != TreeNodeType.Internal) { continue; } var internalNode = child as IInternalTreeNode; var symbolValue = internalNode.Symbol.Value; if (PdlGrammar.LexerRuleTerm == symbolValue) { term = VisitLexerRuleTermNode(internalNode); } if (PdlGrammar.LexerRuleExpression == symbolValue) { expression = VisitLexerRuleExpressionNode(internalNode); } } if (expression is null) { return(new PdlLexerRuleExpression(term)); } return(new PdlLexerRuleExpressionAlteration(term, expression)); }
INfa LexerRuleTerm(PdlLexerRuleTerm term) { var nfa = LexerRuleFactor(term.Factor); if (term.NodeType == PdlNodeType.PdlLexerRuleTermConcatenation) { var concatenation = term as PdlLexerRuleTermConcatenation; var concatNfa = LexerRuleTerm(concatenation.Term); nfa = nfa.Concatenation(concatNfa); } return(nfa); }
public PdlLexerRuleTermConcatenation(PdlLexerRuleFactor factor, PdlLexerRuleTerm term) : base(factor) { Term = term; _hashCode = ComputeHashCode(); }
public PdlLexerRuleExpressionAlteration(PdlLexerRuleTerm term, PdlLexerRuleExpression expression) : base(term) { Expression = expression; _hashCode = ComputeHashCode(); }
public PdlLexerRuleExpression(PdlLexerRuleTerm term) { Term = term; _hashCode = ComputeHashCode(); }