/// <summary>
/// 词法解析
/// </summary>
void TestSimpleLexer()
{
SimpleLexer lexer = new SimpleLexer();
String script = "int age = 45;";
Console.WriteLine("parse: " + script);
SimpleTokenReader tokenReader = lexer.Tokenize(script);
SimpleLexer.Dump(tokenReader);
//测试inta的解析
script = "inta age == 45;";
Console.WriteLine("\nparse :" + script);
tokenReader = lexer.Tokenize(script);
SimpleLexer.Dump(tokenReader);
//测试in的解析
script = "in age = 45;";
Console.WriteLine("\nparse :" + script);
tokenReader = lexer.Tokenize(script);
SimpleLexer.Dump(tokenReader);
//测试>=的解析
script = "age >= 45;";
Console.WriteLine("\nparse :" + script);
tokenReader = lexer.Tokenize(script);
SimpleLexer.Dump(tokenReader);
//测试>的解析
script = "age > 45;";
Console.WriteLine("\nparse :" + script);
tokenReader = lexer.Tokenize(script);
SimpleLexer.Dump(tokenReader);
}
/// <summary>
/// 打印所有的Token
/// </summary>
/// <param name="tokenReader">tokenReader</param>
public static void Dump(SimpleTokenReader tokenReader)
{
Console.WriteLine("text\ttype");
Token token = null;
while ((token = tokenReader.read()) != null)
{
Console.WriteLine(token.getText() + "\t\t" + token.getType());
}
}