Moved some parts to a static lib so both the executable and the tests can link to it.

Written additional tests.

src/SqlLexer.h

@@ -1,44 +0,0 @@
-#ifndef SQLLEXER_H
-#define SQLLEXER_H
-
-#include <QString>
-
-enum class BasicTokenType {
-	None,
-	End, // End of input
-	Symbol, // can be many things, keyword, object name, operator, ..
-	Comment,
-	QuotedString,
-	DollarQuotedString,
-	QuotedIdentifier
-};
-
-enum class LexerState {
-	Null,
-	InDollarQuotedString
-};
-
-
-class SqlLexer {
-public:
-	SqlLexer(const QString &block, LexerState currentstate);
-	QChar nextChar();
-	QChar peekChar();
-	/**
-	 * @brief NextBasicToken
-	 * @param in
-	 * @param ofs
-	 * @param start
-	 * @param length
-	 * @return false when input seems invalid, it will return what it did recognize but something wasn't right, parser should try to recover
-	 */
-	bool nextBasicToken(int &startpos, int &length, BasicTokenType &tokentype, QString &out);
-
-private:
-	QString m_block;
-	int m_pos = 0;
-	LexerState m_state;
-
-};
-
-#endif // SQLLEXER_H