private void ReadToken_WithLeadingBlanks_BlanksAreRemoved()
{
// arrange
string sourceBody = "\"\"\"\r\n\t\r\n\t\r\n\thelloWorld_123\r\n\t\tfoo\r\n\tbar\"\"\"";
var source = new Source(sourceBody);
var lexer = new Lexer();
// act
SyntaxToken token = lexer.Read(source);
// assert
Assert.NotNull(token);
Assert.NotNull(token.Next);
Assert.NotNull(token.Next.Next);
Assert.Null(token.Next.Next.Next);
SyntaxToken blockStringToken = token.Next;
Assert.Equal(TokenKind.BlockString, blockStringToken.Kind);
Assert.Equal("helloWorld_123\n\tfoo\nbar", blockStringToken.Value);
Assert.Equal(1, blockStringToken.Line);
Assert.Equal(1, blockStringToken.Column);
Assert.Equal(0, blockStringToken.Start);
Assert.Equal(36, blockStringToken.End);
Assert.Equal(TokenKind.StartOfFile, blockStringToken.Previous.Kind);
}
private void ReadToken_SingleLine_ParsesCorrectly()
{
// arrange
string sourceBody = "\"\"\"helloWorld_123\"\"\"";
var source = new Source(sourceBody);
var lexer = new Lexer();
// act
SyntaxToken token = lexer.Read(source);
// assert
Assert.NotNull(token);
Assert.NotNull(token.Next);
Assert.NotNull(token.Next.Next);
Assert.Null(token.Next.Next.Next);
SyntaxToken blockStringToken = token.Next;
Assert.Equal(TokenKind.BlockString, blockStringToken.Kind);
Assert.Equal("helloWorld_123", blockStringToken.Value);
Assert.Equal(1, blockStringToken.Line);
Assert.Equal(1, blockStringToken.Column);
Assert.Equal(0, blockStringToken.Start);
Assert.Equal(19, blockStringToken.End);
Assert.Equal(TokenKind.StartOfFile, blockStringToken.Previous.Kind);
}
private void ReadToken_WithEscapedTrippleQuote2_EscapeIsReplacedWithActualQuotes()
{
// arrange
string sourceBody = "\"\"\"hello\\\"\"\"World_123\r\n\t\tfoo\r\n\tbar\"\"\"";
var source = new Source(sourceBody);
var lexer = new Lexer();
// act
SyntaxToken token = lexer.Read(source);
// assert
Assert.NotNull(token);
Assert.NotNull(token.Next);
Assert.NotNull(token.Next.Next);
Assert.Null(token.Next.Next.Next);
SyntaxToken blockStringToken = token.Next;
Assert.Equal(TokenKind.BlockString, blockStringToken.Kind);
Assert.Equal("hello\"\"\"World_123\n\tfoo\nbar", blockStringToken.Value);
Assert.Equal(1, blockStringToken.Line);
Assert.Equal(1, blockStringToken.Column);
Assert.Equal(0, blockStringToken.Start);
Assert.Equal(34, blockStringToken.End);
Assert.Equal(TokenKind.StartOfFile, blockStringToken.Previous.Kind);
}
public void EnsureTokensAreDoublyLinked()
{
// arrange
Source source = new Source(@"type foo");
Lexer lexer = new Lexer();
// act
SyntaxToken token = lexer.Read(source);
// assert
Assert.Equal(TokenKind.StartOfFile, token.Kind);
Assert.Null(token.Previous);
Assert.NotNull(token.Next);
Assert.Equal(TokenKind.Name, token.Next.Kind);
Assert.Equal(token, token.Next.Previous);
Assert.NotNull(token.Next.Next);
Assert.Equal(TokenKind.Name, token.Next.Next.Kind);
Assert.Equal(token.Next, token.Next.Next.Previous);
Assert.NotNull(token.Next.Next.Next);
Assert.Equal(TokenKind.EndOfFile, token.Next.Next.Next.Kind);
Assert.Equal(token.Next.Next, token.Next.Next.Next.Previous);
Assert.Null(token.Next.Next.Next.Next);
}
public void SourceIsNull_ArgumentNullException()
{
// arrange
Lexer lexer = new Lexer();
// act
Action action = () => lexer.Read(null);
// assert
Assert.Throws <ArgumentNullException>(action);
}
public DocumentNode Parse(ISource source, ParserOptions options)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
SyntaxToken start = _lexer.Read(source);
if (start.Kind != TokenKind.StartOfFile)
{
throw new InvalidOperationException(
"The first token must be a start of file token.");
}
return(ParseDocument(source, start,
options ?? ParserOptions.Default));
}
public void UnexpectedTokenSequence()
{
// arrange
Source source = new Source("\"foo");
Lexer lexer = new Lexer();
// act
Action action = () => lexer.Read(source);
// assert
Assert.Equal("Unexpected token sequence.",
Assert.Throws <SyntaxException>(action).Message);
}
public void UnexpectedCharacter()
{
// arrange
Source source = new Source("~");
Lexer lexer = new Lexer();
// act
Action action = () => lexer.Read(source);
// assert
Assert.Equal("Unexpected character.",
Assert.Throws <SyntaxException>(action).Message);
}