protected virtual void AnalysExpression(LexemList lexems)
{
for (int i = 0; i < lexems.Count; i++)
{
var lexem = lexems[i];
if (lexem is LexemBracket)
{
i = this.SkipBrackets(lexems, i);
}
else if (lexem is LexemSwitch && lexem.ToString() == "?")
{
var sw = lexem as LexemSwitch;
var simetric = sw.Simetric;
if (simetric == null)
throw new FormatException("Switch syntax should have simetric Else path");
int index = lexems.FindPosition(simetric);
if (index <= i)
throw new FormatException("Switch syntax balance is incorrect");
var condition = lexems.Range(0, i);
var then = lexems.Range(i + 1, index - i - 1);
var other = lexems.Range(index + 1, lexems.Count - index - 1);
this.OnSwitch(sw, condition, then, other);
return;
}
}
this.AnalysLogical(lexems);
}
protected virtual void AnalysElement(LexemList lexems)
{
if (lexems == null || lexems.Count <= 0)
throw new FormatException("Analys Element is empty");
if (lexems.Count == 1)
{
this.OnElement(lexems[0]);
return;
}
if (lexems[0] is LexemBracket && lexems.FindPosition((lexems[0] as LexemBracket).Simetric) == lexems.Count - 1)
{
this.OnElement(lexems);
return;
}
this.Scan(lexems, LexemOperator.OperationType.Code, new string[] { "->", "." }, this.Error);
}
protected int SkipBrackets(LexemList lexems, int index, bool forward = true)
{
var bracket = lexems[index] as LexemBracket;
if (bracket == null)
return index;
var result = index;
if (bracket.Simetric != null)
result = lexems.FindPosition(bracket.Simetric);
if (forward && result <= index || !forward && result >= index)
throw new FormatException($"Brackets balance is incorrect: {lexems}");
return result;
}
