public override Lexem ReadNextLexem(SourceCodeIterator iterator)
{
if (iterator.CurrentSymbol == '<')
{
char next = iterator.PeekNext();
if (next == '>' || next == '=')
{
iterator.MoveNext();
iterator.MoveNext();
return(ExtractOperatorContent(iterator));
}
}
else if (iterator.CurrentSymbol == '>')
{
char next = iterator.PeekNext();
if (next == '=')
{
iterator.MoveNext();
iterator.MoveNext();
return(ExtractOperatorContent(iterator));
}
}
var lex = ExtractOperatorContent(iterator);
iterator.MoveNext();
return(lex);
}
public void SourceCode_Iterator_Basics()
{
string code = "Б = 1;";
var iterator = new SourceCodeIterator(code);
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == '\0');
Assert.True(iterator.PeekNext() == 'Б');
Assert.True(iterator.MoveNext());
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == 'Б');
Assert.True(iterator.PeekNext() == ' ');
Assert.True(iterator.Position == 0);
Assert.True(iterator.MoveNext());
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == ' ');
Assert.True(iterator.PeekNext() == '=');
Assert.True(iterator.Position == 1);
Assert.True(iterator.MoveNext());
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == '=');
Assert.True(iterator.PeekNext() == ' ');
Assert.True(iterator.Position == 2);
Assert.True(iterator.MoveNext());
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == ' ');
Assert.True(iterator.PeekNext() == '1');
Assert.True(iterator.Position == 3);
Assert.True(iterator.MoveNext());
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == '1');
Assert.True(iterator.PeekNext() == ';');
Assert.True(iterator.Position == 4);
Assert.True(iterator.MoveNext());
Assert.True(iterator.CurrentLine == 1);
Assert.True(iterator.CurrentSymbol == ';');
Assert.True(iterator.PeekNext() == '\0');
Assert.True(iterator.Position == 5);
Assert.False(iterator.MoveNext());
Assert.True(iterator.CurrentSymbol == '\0');
Assert.True(iterator.PeekNext() == '\0');
}