public void CanTokenizeStrings()
{
var tokenizer = new Yalla.Tokenizer.Tokenizer();
var tokens = tokenizer.Tokenize("\"Hello, World!\"");
Assert.AreEqual(2, tokens.Count());
Assert.AreEqual(Token.TokenType.String, tokens.ElementAt(0).Type);
Assert.AreEqual("Hello, World!", tokens.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens.ElementAt(1).Type);
}
public void CanTokenizeQuotes()
{
var tokenizer = new Yalla.Tokenizer.Tokenizer();
var tokens = tokenizer.Tokenize("'()");
Assert.AreEqual(4, tokens.Count());
Assert.AreEqual(Token.TokenType.Quote, tokens.ElementAt(0).Type);
Assert.AreEqual(Token.TokenType.LParen, tokens.ElementAt(1).Type);
Assert.AreEqual(Token.TokenType.RParen, tokens.ElementAt(2).Type);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens.ElementAt(3).Type);
}
public void CanTokenizeSymbols()
{
var tokenizer = new Yalla.Tokenizer.Tokenizer();
var tokens = tokenizer.Tokenize(".abc");
var tokens2 = tokenizer.Tokenize("abc123");
Assert.AreEqual(2, tokens.Count());
Assert.AreEqual(Token.TokenType.Symbol, tokens.ElementAt(0).Type);
Assert.AreEqual(".abc", tokens.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens.ElementAt(1).Type);
Assert.AreEqual(2, tokens2.Count());
Assert.AreEqual(Token.TokenType.Symbol, tokens2.ElementAt(0).Type);
Assert.AreEqual("abc123", tokens2.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens2.ElementAt(1).Type);
}
public void CanTokenizeNumbers()
{
var tokenizer = new Yalla.Tokenizer.Tokenizer();
var tokens = tokenizer.Tokenize("123");
var tokens2 = tokenizer.Tokenize("123.456");
var tokens3 = tokenizer.Tokenize("-123");
Assert.AreEqual(2, tokens.Count());
Assert.AreEqual(Token.TokenType.Integer, tokens.ElementAt(0).Type);
Assert.AreEqual("123", tokens.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens.ElementAt(1).Type);
Assert.AreEqual(2, tokens2.Count());
Assert.AreEqual(Token.TokenType.Double, tokens2.ElementAt(0).Type);
Assert.AreEqual("123.456", tokens2.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens2.ElementAt(1).Type);
Assert.AreEqual(2, tokens3.Count());
Assert.AreEqual(Token.TokenType.Integer, tokens3.ElementAt(0).Type);
Assert.AreEqual("-123", tokens3.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens3.ElementAt(1).Type);
}
public Parser(Tokenizer.Tokenizer tokenizer)
{
this.tokenizer = tokenizer;
}
public void ShallFrownAtUnterminatedStrings()
{
var tokenizer = new Yalla.Tokenizer.Tokenizer();
Assert.Throws(typeof(SyntaxErrorException), () => tokenizer.Tokenize("\"Hello, World!"));
}
public void ShallIgnoreComments()
{
var tokenizer = new Yalla.Tokenizer.Tokenizer();
var tokens = tokenizer.Tokenize("; comment\n" +
"1");
Assert.AreEqual(2, tokens.Count());
Assert.AreEqual(Token.TokenType.Integer, tokens.ElementAt(0).Type);
Assert.AreEqual("1", tokens.ElementAt(0).Value);
Assert.AreEqual(Token.TokenType.EndOfFile, tokens.ElementAt(1).Type);
}