public void Test__Numeric()
{
// Arrange
var lexer = LexerBuilder.New <BaseNode>()
.Init()
.WithAmbiguityResolverEnum(AmbiguityResolverEnum.FirstMatch)
.NilNode(() => new NilNode())
.WithHandler(new Regex("[\\d]+"), opt => opt.Yield(opt.Buffer, new NumericNode {
Value = decimal.Parse(opt.Buffer)
}))
.WithHandler(new Regex("[+-\\/*]"), opt => opt.Yield(opt.Buffer, new OpNode {
Operator = opt.Buffer[0]
}))
.WithHandler(new Regex("[\\s]+"), opt => opt.Dispose(opt.Buffer))
.WithHandler(new Regex("[\\w]+"), opt => opt.SetBuffer(string.Empty))
.WithHandler(new Regex("$"), opt => opt.Stop())
.FinalizeHandlers()
.Build();
// Act
var nodes = lexer.Process(new MemoryStream(Encoding.Default.GetBytes("12 * 23 + 34 / 45 - 56 Error 12 * 23 + 34 / 45 - 56")));
// Assert
Assert.Equal(18, nodes.Count());
}
public void Test__LongestMatch()
{
// Arrange
var lexer = LexerBuilder.New <BaseNode>()
.Init()
.WithAmbiguityResolverEnum(AmbiguityResolverEnum.LongestMatch)
.NilNode(() => new NilNode())
.WithHandler(new Regex("[\\w]+"), opt => opt.Yield(opt.Buffer, new ValueNode {
Value = opt.Buffer
}))
.WithHandler(new Regex("[\\s]+"), opt => opt.Yield(opt.Buffer, new SpaceNode()))
.WithHandler(new Regex("$"), opt => opt.Stop())
.FinalizeHandlers()
.Build();
// Act
var nodes = lexer.Process(new MemoryStream(Encoding.Default.GetBytes("Hello World")));
// Assert
Assert.Equal(3, nodes.Count());
}