#include "SqlHighlighter.h"

static const wchar_t *keywords[] = {
	L"as", L"alter", L"all", L"and", L"any", L"by", L"column", L"create", L"database", L"from", L"full", L"group", L"having",
	L"in", L"inner", L"join", L"left", L"not", L"or", L"order", L"outer", L"right", L"select", L"table", L"where"
};
//static auto types = R"-(bigint|boolean|char|character varying|date|int[248]|integer|numeric|smallint|time|timestamp(?:tz)?|timestamp(?:\s+with\s+timezone)?|varchar)-";
//static auto err = R"-(left|right|inner|outer)-";

	static_assert(sizeof(keywords)/4 == 25,
					  "sizeof keywords");


SqlHighlighter::SqlHighlighter(QTextDocument *parent)
	: QSyntaxHighlighter(parent)
{
//	{
//		static auto keywords = R"-(as|alter|all|and|any|by|column|create|database|from|group|having|in|not|or|order|select|table|where|(?:(?:inner|(?:left|right|full)(\s+outer)?)\s+)?join)-";
//		static auto types = R"-(bigint|boolean|char|character varying|date|int[248]|integer|numeric|smallint|time|timestamp(?:tz)?|timestamp(?:\s+with\s+timezone)?|varchar)-";
//		static auto err = R"-(left|right|inner|outer)-";

//		QTextCharFormat errFormat;
//		errFormat.setForeground(QColor(255, 128, 128));
//		errFormat.setFontWeight(QFont::Bold);
//		highlightingRules.emplace_back(QRegExp(err, Qt::CaseInsensitive), errFormat);

//		QTextCharFormat keywordFormat;
//		keywordFormat.setForeground(QColor(128, 128, 255));
//		keywordFormat.setFontWeight(QFont::Bold);
//		highlightingRules.emplace_back(QRegExp(keywords, Qt::CaseInsensitive), keywordFormat);

//		QTextCharFormat typesFormat;
//		typesFormat.setForeground(QColor(128, 255, 128));
//		typesFormat.setFontWeight(QFont::Bold);
//		highlightingRules.emplace_back(QRegExp(types, Qt::CaseInsensitive), typesFormat);

//	}
}

void NextBasicToken(const QString &in, int ofs, int &start, int &length)
{
	// Basically parses for white space and chops based on white space
	// it does also recognize comments and quoted strings/identifiers

}

void SqlHighlighter::highlightBlock(const QString &text)
{
//	foreach (const HighlightingRule &rule, highlightingRules) {
//		QRegExp expression(rule.pattern);
//		int index = expression.indexIn(text);
//		while (index >= 0) {
//			int length = expression.matchedLength();
//			setFormat(index, length, rule.format);
//			index = expression.indexIn(text, index + length);
//		}
//	}
	setCurrentBlockState(0);
}