private static void PrintRight(IEnumerable <Token> tokens, LineNumberFixer fixer)
{
foreach (var token in tokens)
{
var beginPosition = fixer.GetPosition(token.TokenBeginIdx).TidyPosition();
var endPosition = fixer.GetPosition(token.TokenEndIdx).TidyPosition();
Console.WriteLine($"类型：“{token.TokenType}”\n词素：“{token.Lexeme}”\n" +
$"起始位置：{beginPosition}\n终止位置：{endPosition}\n");
}
}
private static void PrintLeft(IEnumerable <WrongTokenException> exceptions, LineNumberFixer fixer)
{
Console.Error.WriteLine("无法识别的语法单元：");
Console.Error.WriteLine();
foreach (var exception in exceptions)
{
var beginPosition = fixer.GetPosition(exception.TokenBegin);
var endPosition = fixer.GetPosition(exception.CurrentIdx);
#if DEBUG
beginPosition.line.ShouldBe(endPosition.line);
#endif
Console.Error.WriteLine($"在 {endPosition.TidyPosition()} 处：");
Console.Error.WriteLine();
Console.Error.WriteLine(fixer.GetPositionRangeMap(beginPosition.line, beginPosition.column, endPosition.column));
Console.Error.WriteLine();
}
}
private static void HandleParseError(ICollection <ParseException> parseExceptions, LineNumberFixer fixer)
{
Console.Error.WriteLine("语法错误：");
Console.Error.WriteLine();
foreach (var exception in parseExceptions)
{
Console.Error.WriteLine(exception.Message);
if (exception.Token != null)
{
var beginPosition = fixer.GetPosition(exception.Token.TokenBeginIdx);
var endPosition = fixer.GetPosition(exception.Token.TokenEndIdx);
#if DEBUG
beginPosition.line.ShouldBe(endPosition.line);
#endif
Console.Error.WriteLine($"在 {beginPosition.TidyPosition()}-{endPosition.TidyPosition()} 处：");
Console.Error.WriteLine();
Console.Error.WriteLine(fixer.GetPositionRangeMap(beginPosition.line, beginPosition.column,
endPosition.column));
}
Console.Error.WriteLine();
}
}
public void GetPosition_能够返回正确的位置(int idx, int expectLine, int expectColumn)
{
var(line, column) = _lineNumberFixer.GetPosition(idx);
line.ShouldBe(expectLine);
column.ShouldBe(expectColumn);
}
