sapphire/src/Normalizer.cpp

#include "Normalizer.h"

TokenStream Normalizer::normalize(const TokenStream& input)
{
	TokenStream result;
	int i = 0;
	while (i < input.size())
	{
		Token current = input[i];
		if (current.tk_type == TT_Null)
		{
			i++;
			continue;
		}
		if (current.tk_type == TT_Equal)
		{
			if (i + 1 != input.size())
			{
				if (input[i + 1].tk_type == TT_Equal)
				{
					i += 2;
					result.push_back(current.copy_with_new_type(TT_Equals));
					continue;
				}
			}
			i++;
			result.push_back(current);
			continue;
		}
		if (current.tk_type == TT_Exclamation)
		{
			if (i + 1 != input.size())
			{
				if (input[i + 1].tk_type == TT_Equal)
				{
					i += 2;
					result.push_back(current.copy_with_new_type(TT_NEqual));
					continue;
				}
			}
			i++;
			result.push_back(current);
			continue;
		}
		if (current.tk_type == TT_GreaterThan)
		{
			if (i + 1 != input.size())
			{
				if (input[i + 1].tk_type == TT_Equal)
				{
					i += 2;
					result.push_back(current.copy_with_new_type(TT_GTE));
					continue;
				}
			}
			i++;
			result.push_back(current);
			continue;
		}
		if (current.tk_type == TT_LessThan)
		{
			if (i + 1 != input.size())
			{
				if (input[i + 1].tk_type == TT_Equal)
				{
					i += 2;
					result.push_back(current.copy_with_new_type(TT_LTE));
					continue;
				}
			}
			i++;
			result.push_back(current);
			continue;
		}
		i++;
		result.push_back(current);
		continue;
	}

	return result;
}