public void ParseNegativeInteger()
{
Lexer lexer = new Lexer("-42");
var token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Operator, token.TokenType);
Assert.AreEqual("-", token.Value);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("42", token.Value);
Assert.AreEqual(TokenType.Integer, token.TokenType);
Assert.IsNull(lexer.NextToken());
}
public void ParseIntegerWithDotAndName()
{
Lexer lexer = new Lexer("42.foo");
var token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Integer, token.TokenType);
Assert.AreEqual("42", token.Value);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(".", token.Value);
Assert.AreEqual(TokenType.Delimiter, token.TokenType);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Name, token.TokenType);
Assert.AreEqual("foo", token.Value);
Assert.IsNull(lexer.NextToken());
}
public Parser(Lexer lexer)
{
this.lexer = lexer;
}
private static void ParseTokens(string text, TokenType type)
{
Lexer lexer = new Lexer(text);
string[] values = text.Split(' ');
Token token;
foreach (string value in values)
{
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(type, token.TokenType);
Assert.AreEqual(value, token.Value);
}
Assert.IsNull(lexer.NextToken());
}
private static void ParseToken(string text, TokenType type, string value)
{
using (Lexer lexer = new Lexer(text))
{
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(type, token.TokenType);
Assert.AreEqual(value, token.Value);
Assert.IsNull(lexer.NextToken());
}
}
private static void ParseNameTokens(string text, params string[] values)
{
Lexer lexer = new Lexer(text);
Token token;
foreach (string value in values)
{
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Name, token.TokenType);
Assert.AreEqual(value, token.Value);
}
Assert.IsNull(lexer.NextToken());
}
public void PushTwoToken2()
{
Lexer lexer = new Lexer(string.Empty);
Token token = new Token() { TokenType = TokenType.Name, Value = "name" };
Token token2 = new Token() { TokenType = TokenType.Name, Value = "name2" };
lexer.PushToken(token);
lexer.PushToken(token2);
Assert.AreEqual(token2, lexer.NextToken());
Assert.AreEqual(token, lexer.NextToken());
}
public void PushToken()
{
Lexer lexer = new Lexer("");
Token token = new Token() { TokenType = TokenType.Name, Value = "name" };
lexer.PushToken(token);
Assert.AreEqual(token, lexer.NextToken());
}