Sketched rough parser code construction including some SQL AST classes.

core/SqlLexer.h

@@ -15,7 +15,8 @@ enum class BasicTokenType {
 	QuotedIdentifier,
 	Parameter,
 	Operator,
-	Self, // single char representing it self
+	Self, // single char representing it self, maybe remove this and replace with token for each possibility
+	Comma,
 	Cast
 };
 
@@ -25,6 +26,14 @@ enum class LexerState {
 	InBlockComment
 };
 
+class SqlToken {
+public:
+	bool ok;
+	int startPos;
+	int length;
+	BasicTokenType tokenType;
+	QString out;
+};
 
 class SqlLexer {
 public:
@@ -40,6 +49,12 @@ public:
 	 * @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);
+	SqlToken nextBasicToken()
+	{
+		SqlToken token;
+		token.ok = !nextBasicToken(token.startPos, token.length, token.tokenType, token.out);
+		return token;
+	}
 
 	LexerState currentState() const { return m_state; }
 private: