public void GrammarModelToGrammarShouldCreateGrammar()
{
var grammarModel = new GrammarModel();
var S = new ProductionModel("S");
var A = new ProductionModel("A");
var B = new ProductionModel("B");
var a = new StringLiteralLexerRule("a");
var b = new StringLiteralLexerRule("b");
var space = new StringLiteralLexerRule(" ");
S.AddWithAnd(A.LeftHandSide);
S.AddWithAnd(B.LeftHandSide);
S.AddWithOr(B.LeftHandSide);
A.AddWithAnd(new LexerRuleModel(a));
B.AddWithAnd(new LexerRuleModel(b));
grammarModel.Productions.Add(S);
grammarModel.Productions.Add(A);
grammarModel.Productions.Add(B);
grammarModel.IgnoreRules.Add(new LexerRuleModel(space));
grammarModel.Start = S;
var grammar = grammarModel.ToGrammar();
Assert.AreEqual(4, grammar.Productions.Count);
Assert.AreEqual(1, grammar.Ignores.Count);
}
public void GrammarModelConstructorGivenOnlyStartProductionShouldTraverseRecursiveStructureOnlyOnce()
{
var S = new ProductionModel("S");
var A = new ProductionModel("A");
S.AddWithAnd(S);
S.AddWithOr(A);
A.AddWithAnd(new LexerRuleModel(new StringLiteralLexerRule("a")));
var grammarModel = new GrammarModel(S);
var grammar = grammarModel.ToGrammar();
Assert.AreEqual(3, grammar.Productions.Count);
}
public void GrammarModelConstructorGivenOnlyStartProductionShouldDiscoverLinkedProductions()
{
var S = new ProductionModel("S");
var A = new ProductionModel("A");
var B = new ProductionModel("B");
var C = new ProductionModel("C");
S.AddWithAnd(A);
A.AddWithAnd(B);
A.AddWithOr(C);
B.AddWithAnd(new LexerRuleModel(new StringLiteralLexerRule("b")));
C.AddWithAnd(new LexerRuleModel(new StringLiteralLexerRule("c")));
var grammarModel = new GrammarModel(S);
var grammar = grammarModel.ToGrammar();
Assert.AreEqual(5, grammar.Productions.Count);
}