public void ParseACharacter()
{
Lexer lexer = new Lexer("\\a");
Token token;
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual("a", token.Value);
Assert.AreEqual(TokenType.Character, token.TokenType);
Assert.IsNull(lexer.NextToken());
}
public void ParseDispatchMacros()
{
string macros = "#' #( #{ #^ #_ ~@";
Lexer lexer = new Lexer(macros);
Token token;
foreach (string macro in macros.Split(' '))
{
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Macro, token.TokenType);
Assert.AreEqual(macro, token.Value);
}
Assert.IsNull(lexer.NextToken());
}
public void ParseBrackets()
{
Lexer lexer = new Lexer("[]");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.TokenType);
Assert.AreEqual("[", token.Value);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.TokenType);
Assert.AreEqual("]", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void RaiseIfStringIsUnclosed()
{
Lexer lexer = new Lexer("\"Unclosed");
lexer.NextToken();
}
public void RaiseIfInvalidCharacter()
{
Lexer lexer = new Lexer("\\foo");
Token token;
token = lexer.NextToken();
}
public void PushToken()
{
Lexer lexer = new Lexer(string.Empty);
Token token = new Token { Value = "foo", TokenType = TokenType.Symbol };
lexer.PushToken(token);
Token retrieved = lexer.NextToken();
Assert.IsNotNull(retrieved);
Assert.AreEqual("foo", retrieved.Value);
Assert.AreEqual(TokenType.Symbol, retrieved.TokenType);
}
public void ParseSymbolWithSurroundingSpaces()
{
Lexer lexer = new Lexer(" foo ");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Symbol, token.TokenType);
Assert.AreEqual("foo", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseSymbolWithQuestionMark()
{
Lexer lexer = new Lexer("foo?");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Symbol, token.TokenType);
Assert.AreEqual("foo?", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseKeyword()
{
Lexer lexer = new Lexer(":foo");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Keyword, token.TokenType);
Assert.AreEqual("foo", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseStringWithEmbeddedDoubleQuotes()
{
Lexer lexer = new Lexer("\"foo \\\"bar\\\"\"");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.String, token.TokenType);
Assert.AreEqual("foo \"bar\"", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseString()
{
Lexer lexer = new Lexer("\"foo bar\"");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.String, token.TokenType);
Assert.AreEqual("foo bar", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseSpecialNames()
{
string names = "+ - * / > < = == >= <=";
Lexer lexer = new Lexer(names);
Token token;
foreach (string name in names.Split(' '))
{
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Symbol, token.TokenType);
Assert.AreEqual(name, token.Value);
}
Assert.IsNull(lexer.NextToken());
}
public void ParseSimbolWithHyphen()
{
Lexer lexer = new Lexer("foo-bar");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Symbol, token.TokenType);
Assert.AreEqual("foo-bar", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseSeparatorCharacters()
{
string chars = ",";
Lexer lexer = new Lexer(chars);
Token token;
foreach (char ch in chars)
{
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.TokenType);
Assert.AreEqual(ch.ToString(), token.Value);
}
Assert.IsNull(lexer.NextToken());
}
public void ParseParenthesis()
{
Lexer lexer = new Lexer("()");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.TokenType);
Assert.AreEqual("(", token.Value);
token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Separator, token.TokenType);
Assert.AreEqual(")", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseSymbolWithDots()
{
Lexer lexer = new Lexer("System.foo.bar");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Symbol, token.TokenType);
Assert.AreEqual("System.foo.bar", token.Value);
Assert.IsNull(lexer.NextToken());
}
public void ParseInteger()
{
Lexer lexer = new Lexer("123");
Token token = lexer.NextToken();
Assert.IsNotNull(token);
Assert.AreEqual(TokenType.Integer, token.TokenType);
Assert.AreEqual("123", token.Value);
Assert.IsNull(lexer.NextToken());
}
public Parser(Lexer lexer)
{
this.lexer = lexer;
}