cron-like functionality wip

.gitignore

@@ -7,3 +7,5 @@ CMakeFiles
 Testing
 .cache
 Makefile
+cmake_install.cmake
+CMakeCache.txt

.vscode/c_cpp_properties.json

@@ -7,10 +7,6 @@
                 "${workspaceFolder}/clib"
             ],
             "defines": [],
-            "macFrameworkPath": [
-                "/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks"
-            ],
-            "compilerPath": "/usr/bin/clang",
             "cStandard": "c17",
             "intelliSenseMode": "macos-clang-x64",
             "configurationProvider": "ms-vscode.cmake-tools"

clib/csvparser.cpp

@@ -14,16 +14,20 @@ CsvParser::CsvParser(bool skip_hdr, char field_sep, char quote_ch, char line_sep
 }
 
 MlValue CsvParser::parseCSV(const std::string &csvSource) {
-    int linesRead = 0;
+	constexpr size_t INITIAL_PARSED_ROWS_SIZE = 128;
+	constexpr size_t INITIAL_COLUMNS_SIZE = 32;
+	constexpr size_t ROWS_READ_FOR_SIZE_ESTIMATION = 16;
+
+    size_t linesRead = 0;
 	bool inQuote(false);
 	bool newLine(false);
 	std::string field;
 
-	std::vector<MlValue> parsed_data;
+	std::vector<MlValue> parsed_rows;
-	parsed_data.reserve(128);	// TODO introduce constant here
+	parsed_rows.reserve(INITIAL_PARSED_ROWS_SIZE);
 
 	std::vector<MlValue> line;
-	line.reserve(32);		// TODO introduce constant here
+	line.reserve(INITIAL_COLUMNS_SIZE);
 
 	std::string::const_iterator aChar = csvSource.begin();
 	std::string::const_iterator aEnd = csvSource.end();
@@ -45,14 +49,14 @@ MlValue CsvParser::parseCSV(const std::string &csvSource) {
 			} else {
 				if (!newLine) {
 					line.push_back(ivalualize(field));
-					add_line(line, parsed_data);
+					add_row(line, parsed_rows);
 					field.clear();
 					line.clear();
 					linesRead++;
-					if (linesRead == 16) {
+					if (linesRead == ROWS_READ_FOR_SIZE_ESTIMATION) {
 					    size_t linesEstimation = csvSource.size() / (std::distance(csvSource.begin(), aChar) / linesRead);
-						if (linesEstimation > parsed_data.capacity())
+						if (linesEstimation > parsed_rows.capacity())
-					    	parsed_data.reserve(linesEstimation);
+					    	parsed_rows.reserve(linesEstimation);
 					}
 					newLine = true;
 				}
@@ -68,18 +72,18 @@ MlValue CsvParser::parseCSV(const std::string &csvSource) {
 	if (!field.empty())
 		line.push_back(ivalualize(field));
 
-	add_line(line, parsed_data);
+	add_row(line, parsed_rows);
 
-	return parsed_data;
+	return parsed_rows;
 }
 
 
-void CsvParser::add_line(const std::vector<MlValue> &line, std::vector<MlValue>  &lines) {
+void CsvParser::add_row(const std::vector<MlValue> &columns, std::vector<MlValue>  &rows) {
 	if (skip_header && !header_skiped) {
 		header_skiped = true;
 	} else {
-		if (!line.empty())
+		if (!columns.empty())
-			lines.emplace_back(line);
+			rows.emplace_back(columns);
 	}
 }
 

clib/csvparser.h

@@ -26,7 +26,7 @@ public:
     MlValue parseCSV(const std::string &csvSource);
 
 private:
-    void add_line(const std::vector<MlValue> &line, std::vector<MlValue>  &lines);
+    void add_row(const std::vector<MlValue> &columns, std::vector<MlValue>  &rows);
 
     static MlValue ivalualize(const std::string &value) ;
 

clib/printf.cpp

@@ -6,11 +6,11 @@
 #include <vector>
 
 
-std::string
+std::string mini_sprintf_format(bool left_align, bool sign, bool space_on_left, bool padding_by_zero,
-mini_sprintf_format(bool left_align, bool sign, bool space_on_left, bool padding_by_zero, int width, int precision,
+								int width, int precision,
 								int length, char specifier, const MlValue &value) {
 	std::string s;
-	std::ostringstream stream_str;        // PERF simpler solution..without string stream
+	std::ostringstream stream_str;        // PERF string append should be faster
 	bool is_positive = false;
 
 	if (specifier == 's') {
@@ -47,7 +47,7 @@ mini_sprintf_format(bool left_align, bool sign, bool space_on_left, bool padding
 			stream_str << std::setprecision(precision);
 
 		stream_str << dval;
-		s = stream_str.str(); // TODO ??
+		s = stream_str.str();
 	}
 
 	if (width > -1 && s.size() < width) {

clib/sslclient.cpp

@@ -5,7 +5,6 @@
 #include <netinet/in.h>
 #include <sys/socket.h>
 
-#include <cstdio>
 #include <iostream>
 #include <regex>
 #include <sstream>
@@ -16,8 +15,6 @@
 // https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/GET
 
 
-// TODO user streams instead of printf's
-
 std::pair<int, std::string> HttpClient::doRequest(const std::string &method, const std::string &url, const std::map<std::string, std::string> &headers, const std::string &request_body) {
 	// split url to parts
 	parseURL(url);
@@ -39,7 +36,6 @@ std::pair<int, std::string> HttpClient::doRequest(const std::string &method, con
 		return std::make_pair(403, "");
 	}
 
-
 	// get headers
 	std::string::size_type position = ssl_read_packet.find("\r\n\r\n");
 	if (position == std::string::npos)
@@ -198,7 +194,7 @@ int HttpClient::sslRequest(const std::string &server_name, const std::string &re
 	int s;
 	s = socket(AF_INET, SOCK_STREAM, 0);
 	if (!s) {
-		printf("sslRequest, error creating socket.\n");
+		std::cerr << "HttpClient::sslRequest, error creating socket" << std::endl;
 		return -1;
 	}
 
@@ -213,7 +209,7 @@ int HttpClient::sslRequest(const std::string &server_name, const std::string &re
 
 	// connect to server
 	if (connect(s, (struct sockaddr *) &sa, socklen)) {
-		printf("sslRequest, error connecting to server.\n");
+		std::cerr << "HttpClient::sslRequest, error connecting to server"  << std::endl;
 		return -1;
 	}
 	
@@ -224,7 +220,7 @@ int HttpClient::sslRequest(const std::string &server_name, const std::string &re
 	SSL_CTX *ctx = SSL_CTX_new(meth);
 	ssl = SSL_new(ctx);
 	if (!ssl) {
-		printf("sslRequest, error creating SSL.\n");
+		std::cerr << "HttpClient::sslRequest, error creating SSL" << std::endl;
 		logSSL();
 		return -1;
 	}
@@ -235,23 +231,23 @@ int HttpClient::sslRequest(const std::string &server_name, const std::string &re
 
 	int err = SSL_connect(ssl);
 	if (err <= 0) {
-		printf("sslRequest, error creating SSL connection.  err=%x\n", err);
+		std::cerr << "HttpClient::sslRequest, error creating SSL connection. " << err << std::endl;
 		logSSL();
 		fflush(stdout);
 		return -1;
 	}
 
 	// log cipher
-	// printf ("SSL connection using %s\n", SSL_get_cipher (ssl));
+	// std::cerr << "HttpClient::sslRequest, SSL connection using" << SSL_get_cipher (ssl) << std::endl;
 	// showCerts(ssl);
 
 
 	// send request
-	// printf ("SSL sending request %s\n", request.c_str());
+	// std::cerr << "HttpClient::sslRequest, SSL sending request: " << request << std::endl;
 
 	int written_bytes = sslSendPacket(request);
 	if (written_bytes != request.length()) {
-		printf("sslRequest, error sending request\n");
+		std::cerr << "HttpClient::sslRequest, error sending request" << std::endl;
 		return -1;
 	}
 
@@ -275,15 +271,15 @@ void HttpClient::showCerts(SSL* ssl) {
 
     cert = SSL_get_peer_certificate(ssl); /* get the server's certificate */
     if ( cert != NULL ) {
-		printf("Server certificates:\n");
+		std::cerr << "HttpClient::showCerts, Server certificates: " << std::endl;
 		line = X509_NAME_oneline(X509_get_subject_name(cert), 0, 0);
-		printf("Subject: %s\n", line);
+		std::cerr << "HttpClient::showCerts, Subject: " << line << std::endl;
 		free(line);       /* free the malloc'ed string */
 		line = X509_NAME_oneline(X509_get_issuer_name(cert), 0, 0);
-		printf("Issuer: %s\n", line);
+		std::cerr << "HttpClient::showCerts, Issuer: " << line << std::endl;
 		free(line);       /* free the malloc'ed string */
 		X509_free(cert);     /* free the malloc'ed certificate copy */
 	} else {
-    	printf("No certificates.\n");
+		std::cerr << "HttpClient::showCerts, No certificates." << std::endl;
     }
 }

clib/sslclient.h

@@ -9,7 +9,6 @@
 
 
 class HttpClient {
-    // TODO at this moment only https is implemented
 
 private:
     SSL *ssl;

debug.lsp

@@ -1,7 +1,5 @@
 (include "/usr/local/var/mlisp/terminal.lsp")
 
-; TODO better env formating
-; TODO time parse function
 
 
 (defn cron::sleep-to-next-minute ()
@@ -9,9 +7,6 @@
 
 
 (defn cron::eval-time-spec (val time_spec)
-(do
-  	;(print "DEBUG" "cron::eval-time-spec" val time_spec)
- (def r
   	(cond
   	    ((nil? time_spec)
 			#t)	; no time_spec -> it's true
@@ -26,9 +21,6 @@
 			nil)	; TODO exception
 	)
 )
- (print "val:" val "time_spec:" time_spec "result" r)
- r
-))
 
 
 (defn cron::add-job (name time_spec job)
@@ -55,10 +47,17 @@
 		(set! bool (and bool (cron::eval-time-spec time_day     (find-val-in-list time_spec "day"))))
 		(set! bool (and bool (cron::eval-time-spec time_month   (find-val-in-list time_spec "month"))))
 		(set! bool (and bool (cron::eval-time-spec time_year    (find-val-in-list time_spec "year"))))
-		(print "time-to-run test" bool)
+		; (print "time-to-run test" bool)
 		bool
 ))
 
+(defn cron::run-job (name code)
+	(do
+		;(print "running job:" name "->" code)
+		(def run_code (+ "(thread-create " (display code) ")"))
+		(eval (parse run_code))
+	)
+)
 
 (defn cron::start ()
 	(do
@@ -70,13 +69,13 @@
 		    (for e cron::entries
 			    (def job_name (first e))
 			    (def time_spec (second e))
+			    (def job_code (third e))
 
-			    ; (print "DEBUG" "checking" job_name "time_spec" time_spec)
+				; (print "\n\n")
-			    (if (cron::time-to-run now time_spec)
+				(def is_for_run (cron::time-to-run now time_spec))
-					(do
+			    ; (print "DEBUG" job_name "checked" is_for_run)
-						;(print "running job:" job_name "code:" (third e))
+			    (if is_for_run
-						(thread-create (eval (third e)))
+					(cron::run-job job_name job_code)
-					)
 					; (print "not running" job_name)
 			    )
 			)
@@ -99,19 +98,20 @@
 
 (cron::add-job "every_min_print" 
 	       '(("minute" "*")) 
-	       '(print "code: every_min_print"))
+	       '(print "executing: every_min_print"))
+;	       '(do (sleep 3) (print "executing: every_min_print")))
 
 (cron::add-job "every_min_between_00_and_05" 
 	       '(("minute" "00-05")) 
-	       '(print "code: every_min_between_00_and_05"))
+	       '(print "executing: every_min_between_00_and_05"))
 
 (cron::add-job "13:20_working_day" 
 	       '(("weekday" "1-5")("hour" "13")("minute" "20")) 
-	       '(print "code: 13:20_working_day"))
+	       '(print "executing: 13:20_working_day"))
 
 (cron::add-job "15:20_working_day" 
 	       '(("weekday" "1-5")("hour" "15")("minute" "20")) 
-	       '(print "code: 15:20_working_day"))
+	       '(print "executing: 15:20_working_day"))
 
 
 (cron::start)

doc/Doc.md

@@ -113,7 +113,7 @@
 |`start-of-year datetime`|Returns epoch time of start of year|`>>> (start-of-year (str-to-date "2021-05-13 10:32:12" "%Y-%m-%d %H:%M:%S")) => 1609459200`|Date and time|
 |`end-of-year datetime`|Returns epoch time of end of year|`>>> (end-of-year (str-to-date "2021-05-13 10:32:12" "%Y-%m-%d %H:%M:%S")) => 1640995199`|Date and time|
 |`decode-universal-time time`|Returns the decoded time represented by the given universal time. Returns list with (second, minute, hour, day, month, year, day-of-the-week)|`>>> (decode-universal-time 0) => (0 0 0 1 1 1970 4)`|Date and time|
-|`(debug ..)`|TODO add me|TODO add me|IO|
+|`(debug ..)`|Returns string representation of passed params|`>>> (debug '(1 2 3)) => "(1 2 3)"`|IO|
 |`(display ..)`|Displays passed parameters|`>>> (display '(1 2 3)) => "(1 2 3)"`|IO|
 |`(string-replace source substr replacement)`|Replace a substring with a replacement string in a source string|`>>> (string-replace "abcdefg" "de" "DE") => "abcDEfg"`|String manipulation|
 |`(string-replace-re source substr replacement)`|Replace a substring regex with a replacement string in a source string|`>>> (string-replace-re "there is a subsequence in the string" "\\b(sub)([^ ]*)" "sub-$2") => "there is a sub-sequence in the string"`|String manipulation|
@@ -177,4 +177,4 @@
 |`(thread-sleep milisecons)`|Sleeps thread for given amount of miliseconds||Threading|
 |`(threads-join)`|Wait for all running threads to finish||Threading|
 |`(try block catch_block [finally_block])`|Evaluates block and if an exception is thrown, evaluates catch_block.Eventually in both cases evals finally_block. Return evaluated last expression from block if no exception or last expression from catch_block, if exception is thrown from block. Variable ml-exception in catch block is available with astring describing exception||Exceptions|
-|`(throw-exception exp_desc)`|Throws an exception with exp_desc describing what happened ||Exceptions|
+|`(throw exp_desc)`|Throws an exception with exp_desc describing what happened. exp_desc will be evaluated a returned as string|`>>> (throw (+ 1 2))\n3`|Exceptions|

ml.cpp

@@ -1239,7 +1239,6 @@ MlValue read_url(std::vector<MlValue> args, MlEnvironment &env) {
 MlValue parse_json(std::vector<MlValue> args, MlEnvironment &env) {
 	eval_args(args, env);
 
-	// TODO add support for more params specifying options
 	if (args.size() != 1)
 		throw MlError(MlValue("parse-json", parse_json), env, args.size() > 1 ? TOO_MANY_ARGS : TOO_FEW_ARGS);
 
@@ -1247,10 +1246,9 @@ MlValue parse_json(std::vector<MlValue> args, MlEnvironment &env) {
 	std::string err;
 	auto json = json11::Json::parse(str, err);
 
-	if (!err.empty()) {
+	if (!err.empty())
-		// TODO handle error
 		return MlValue::string("ERROR json parsing: " + err);
-	}
+
 
 	return json.ivalualize();
 }
@@ -1973,9 +1971,10 @@ MlValue thread_create(std::vector<MlValue> args, MlEnvironment &env) {
 			    MlValue acc = arg.eval(env);
 		} catch (const MlError &e) {
 			std::cerr << "thread_create exception: " << e.description() << std::endl;
+		    throw;
 		} catch (const std::exception &e) {
 		    std::cerr << "thread_create exception: " << e.what() << std::endl;
-		    throw e;
+		    throw;
 	    }
 	};
 
@@ -2058,10 +2057,12 @@ MlValue try_block(std::vector<MlValue> args, MlEnvironment &env) {
 }
 
 MlValue throw_exception(std::vector<MlValue> args, MlEnvironment &env) {
+	eval_args(args, env);
+
 	if (args.size() != 1)
 		throw MlError(MlValue("throw", throw_exception), env, args.size() > 1 ? TOO_MANY_ARGS : TOO_FEW_ARGS);
 
-	throw std::runtime_error(args[0].as_string());
+	throw std::runtime_error(args[0].cast_to_string().as_string());
 }
 
 MlValue usql(std::vector<MlValue> args, MlEnvironment &env) {
@@ -2356,10 +2357,10 @@ int main(int argc, char *argv[]) {
 				run(read_file_contents(file), env);
 		// sheebang
 		} else if (cmdOptionExists(argv, argv + argc, "-run")) {
-			for (auto & file : getCmdOption(argv, argc, "-run")) {	// TODO check only one file is specified ??
+			for (auto & file : getCmdOption(argv, argc, "-run")) {
 				std::string file_content = read_file_contents(file);
 				if (file_content.find("#!") == 0)        // shebang ?
-					file_content.erase(0, file_content.find('\n') + 1);   // TODO mac osx newline??
+					file_content.erase(0, file_content.find('\n') + 1);
 
 				run(file_content, env);
 			}
@@ -2376,7 +2377,6 @@ int main(int argc, char *argv[]) {
 		std::cerr << e.description() << std::endl;
 	} catch (const std::exception &e) {
 		std::cerr << MlPerfMon::instance().callstack() << e.what() << std::endl;
-		MlPerfMon::instance().clear_callstack();
 	}
 
 	return 1;

ml_util.cpp

@@ -3,6 +3,7 @@
 
 #include <string>
 #include <vector>
+#include <filesystem>
 
 const std::vector<std::string> commands {
 	"eval", "type", "parse", "do", "if", "for", "while", "scope", "quote", "defn", 
@@ -17,12 +18,11 @@ const std::vector<std::string> commands {
 	};
 
 std::string get_history_file_dir() {
-	// TODO not portable and in function
+	std::string filename{".ml_history.txt"};
-	std::string file{"/.ml_history.txt"};
 	const char *t = std::getenv("HOME");
 
-	if (t == nullptr) return "/tmp/" + file;
+	if (t == nullptr) return std::filesystem::temp_directory_path() / filename;
-	else return std::string{t} + "/" + file;
+	else return std::filesystem::path(std::string{t}) /filename;
 }	
 
 MlEnvironment * repl_env = nullptr;
@@ -68,7 +68,7 @@ void completion(const char *buf, linenoiseCompletions *lc) {
         std::string token = str.substr(pos+1);
         std::string begining = str.substr(0, pos+1);
 
-        // TODO optimize not to get all lambdas, but those beginning with token
+        // PERF optimize not to get all lambdas, but those beginning with token
         std::vector<std::string> lambdas = repl_env->get_lambdas_list();
     	lambdas.insert(end(lambdas), begin(commands), end(commands));
 

stdlib/stdlib.lsp

@@ -83,7 +83,8 @@
 ; return 1 when list contains item otherwise nil
 (defn member (lst itm) 
     (do
-        ; TODO check if is empty list
+        (if (list? lst)
+            (do
                 (def found_index -1)
                 (def i 0)
                 (def lst_len (len lst))
@@ -97,6 +98,8 @@
                 (if (!= -1 found_index)
                     #t
                     nil)
+            )
+            nil)
     ))
 
 (defn make-list-of (size val)

usql/parser.cpp

@@ -5,6 +5,17 @@ namespace usql {
 
 // TOOD handle premature eof
 
+	std::string column_type_name(const ColumnType type) {
+		if (type == ColumnType::integer_type)	return "integer_type";
+		if (type == ColumnType::float_type)		return "float_type";
+		if (type == ColumnType::varchar_type)	return "varchar_type";
+		if (type == ColumnType::date_type)		return "date_type";
+		if (type == ColumnType::bool_type)		return "bool_type";
+
+		throw Exception("invalid column type: " + (int)type);	
+	};
+
+
     Parser::Parser() {
 	    m_lexer = Lexer{};
     }
@@ -529,4 +540,3 @@ namespace usql {
     }
 
 }	// namespace
-

usql/parser.h

@@ -21,6 +21,9 @@ enum class ColumnType {
 	bool_type
 };
 
+std::string column_type_name(const ColumnType type);
+
+
 enum class NodeType {
 	true_node,
 	null_value,
@@ -51,6 +54,7 @@ enum class NodeType {
 	error
 };
 
+
 struct Node {
 	NodeType node_type;
 
@@ -58,7 +62,7 @@ struct Node {
 	virtual ~Node() = default;
 
 	virtual void dump() const {
-		std::cout << "type: Node" << std::endl;
+		std::cout << "type: Node" << (int)node_type << std::endl;
 	}
 };
 
@@ -115,19 +119,76 @@ struct ColDefNode : Node {
 			null(nullable) {}
 
 	void dump() const override {
-		std::cout << "type: ColDefNode, name: " << name << ", type: " << (int)type << " TODO add more" << std::endl;
+		std::cout << "type: ColDefNode, name: " << name << ", type: " << column_type_name(type) << ", order: " << order << ", length: " << length << ", null: " << null << std::endl;
 	}
 };
 
 struct FunctionNode : Node {
-	std::string				function;	// TODO use enum
+
+	enum class Type {
+		to_string,
+		to_date,
+		date_add,
+		pp,
+		lower,
+		upper,
+		min,
+		max,
+		count
+	};
+
+	static Type get_function(const std::string &str) {
+		if (str=="to_string")	return Type::to_string;
+		if (str=="to_date")		return Type::to_date;
+		if (str=="date_add")	return Type::date_add;
+		if (str=="pp")			return Type::pp;
+		if (str=="lower")		return Type::lower;
+		if (str=="upper")		return Type::upper;
+		if (str=="min")			return Type::min;
+		if (str=="max")			return Type::max;
+		if (str=="count")		return Type::count;
+
+		throw Exception("invalid function: " + str);	
+	};
+
+	static std::string function_name(const Type type) {
+		if (type == Type::to_string)	return "to_string";
+		if (type == Type::to_date)		return "to_date";
+		if (type == Type::date_add)		return "date_add";
+		if (type == Type::pp)			return "pp";
+		if (type == Type::lower)		return "lower";
+		if (type == Type::upper)		return "upper";
+		if (type == Type::min)			return "min";
+		if (type == Type::max)			return "max";
+		if (type == Type::count)		return "count";
+
+		throw Exception("invalid function: " + (int)type);	
+	};
+
+
+	Type								function;
 	std::vector<std::unique_ptr<Node>>	params;
 
 	FunctionNode(std::string  func_name, std::vector<std::unique_ptr<Node>> pars) :
-	Node(NodeType::function), function(std::move(func_name)), params(std::move(pars)) {}
+	Node(NodeType::function), function(get_function(func_name)), params(std::move(pars)) {}
+
+	bool is_agg_function() {
+		return (function == Type::count || function == Type::min || function == Type::max);
+	}
+
+
+	friend std::ostream &operator<<(std::ostream &output, const Type &t ) {
+		output << function_name(t);
+		return output;
+	}
 
 	void dump() const override {
-		std::cout << "type: FunctionNode, function: " << function << " TODO add more" << std::endl;
+		std::cout << "type: FunctionNode, function: " << function_name(function) << "(";
+		for(int i = 0; i < params.size(); i++){
+			if (i > 0) std::cout << ",";
+			params[i]->dump();
+		}			
+		std::cout << ")" << std::endl;
 	}
 };
 
@@ -325,7 +386,12 @@ struct CreateTableNode : Node {
 			Node(NodeType::create_table), table_name(std::move(name)), cols_defs(std::move(defs)) {}
 
 	void dump() const override {
-		std::cout << "type: CreateTableNode, table_name: " << table_name << "TODO complete me" << std::endl;
+		std::cout << "type: CreateTableNode, table_name: " << table_name << "(";
+		for(int i = 0; i < cols_defs.size(); i++) {
+			if (i > 0) std::cout << ",";
+			cols_defs[i].dump();
+		}	
+		std::cout << ")" << std::endl;
 	}
 };
 
@@ -338,7 +404,17 @@ struct InsertIntoTableNode : Node {
 			Node(NodeType::insert_into), table_name(std::move(name)), cols_names(std::move(names)), cols_values(std::move(values)) {}
 
 	void dump() const override {
-		std::cout << "type: InsertIntoTableNode, table_name: " << table_name << "TODO complete me" << std::endl;
+		std::cout << "type: InsertIntoTableNode, table_name: " << table_name << "(";
+		for(int i = 0; i < cols_names.size(); i++) {
+			if (i > 0) std::cout << ",";
+			cols_names[i].dump();
+		}	
+		std::cout << ") values (";
+		for(int i = 0; i < cols_values.size(); i++) {
+			if (i > 0) std::cout << ",";
+			cols_values[i]->dump();
+		}	
+		std::cout << ")" << std::endl;
 	}
 };
 
@@ -354,8 +430,22 @@ struct SelectFromTableNode : Node {
 	Node(NodeType::select_from), table_name(std::move(name)), cols_names(std::move(names)), where(std::move(where_clause)), order_by(std::move(orderby)), offset_limit(std::move(offlim)), distinct(distinct_) {}
 
 	void dump() const override {
-		std::cout << "type: SelectFromTableNode, table_name: " << table_name << "TODO complete me" << std::endl;
+		std::cout << "type: SelectFromTableNode, table_name: " << table_name;
+		std::cout << "colums: ";	
+		for(int i = 0; i < cols_names->size(); i++) {
+			if (i > 0) std::cout << ",";
+			cols_names->operator[](i).dump();
+		}
+		std::cout << "where: ";	
 		where->dump();
+		std::cout << "offset,limit: ";
+		for(int i = 0; i < order_by.size(); i++) {
+			if (i > 0) std::cout << ",";
+			order_by[i].dump();
+		}	
+		std::cout << "offset,limit: ";
+		offset_limit.dump();
+		std::cout << std::endl;
 	}
 };
 
@@ -384,8 +474,16 @@ struct UpdateTableNode : Node {
 			where(std::move(where_clause)) {}
 
 	void dump() const override {
-		std::cout << "type: UpdateTableNode, table_name: " << table_name << "TODO complete me" << std::endl;
+		std::cout << "type: UpdateTableNode, table_name: " << table_name << " set ";
+		for(int i = 0; i < cols_names.size(); i++) {
+			if (i > 0) std::cout << ",";
+			cols_names[i].dump();
+			std::cout << " = ";
+			values[i]->dump();
+		}	
+		std::cout << " where: ";
 		where->dump();
+		std::cout << std::endl;
 	}
 };
 
@@ -431,8 +529,10 @@ struct DeleteFromTableNode : Node {
 			Node(NodeType::delete_from), table_name(std::move(name)), where(std::move(where_clause)) {}
 
 	void dump() const override {
-		std::cout << "type: DeleteFromTableNode, table_name: " << table_name << std::endl;
+		std::cout << "type: DeleteFromTableNode, table_name: " << table_name;
+		std::cout << "where: ";	
 		where->dump();
+		std::cout << std::endl;
 	}
 };
 

usql/row.h

@@ -182,7 +182,7 @@ public:
 
 	[[nodiscard]] bool is_visible() const { return m_visible; };
 	void set_visible() { m_visible = true; };
-	void set_deleted() { m_visible = true; };
+	void set_deleted() { m_visible = false; };
 
 private:
 	bool m_visible;

usql/table.h

@@ -8,6 +8,7 @@
 #include <vector>
 #include <mutex>
 
+
 namespace usql {
 
 struct Table {

usql/usql.cpp

@@ -176,18 +176,17 @@ std::unique_ptr<ValueNode> USql::eval_function_value_node(Table *table, Row &row
 	if (evaluatedPars.empty() || evaluatedPars[0]->isNull())
 		return std::make_unique<NullValueNode>();
 
-	// TODO use some enum
+	if (fnc->function == FunctionNode::Type::lower) return lower_function(evaluatedPars);
-	if (fnc->function == "lower") return lower_function(evaluatedPars);
+	if (fnc->function == FunctionNode::Type::upper) return upper_function(evaluatedPars);
-	if (fnc->function == "upper") return upper_function(evaluatedPars);
+	if (fnc->function == FunctionNode::Type::to_date) return to_date_function(evaluatedPars);
-	if (fnc->function == "to_date") return to_date_function(evaluatedPars);
+	if (fnc->function == FunctionNode::Type::to_string) return to_string_function(evaluatedPars);
-	if (fnc->function == "to_string") return to_string_function(evaluatedPars);
+	if (fnc->function == FunctionNode::Type::date_add) return date_add_function(evaluatedPars);
-	if (fnc->function == "date_add") return date_add_function(evaluatedPars);
+	if (fnc->function == FunctionNode::Type::pp) return pp_function(evaluatedPars);
-	if (fnc->function == "pp") return pp_function(evaluatedPars);
+	if (fnc->function == FunctionNode::Type::count) return count_function(agg_func_value, evaluatedPars);
-	if (fnc->function == "count") return count_function(agg_func_value, evaluatedPars);
+	if (fnc->function == FunctionNode::Type::max) return max_function(evaluatedPars, col_def_node, agg_func_value);
-	if (fnc->function == "max") return max_function(evaluatedPars, col_def_node, agg_func_value);
+	if (fnc->function == FunctionNode::Type::min) return min_function(evaluatedPars, col_def_node, agg_func_value);
-	if (fnc->function == "min") return min_function(evaluatedPars, col_def_node, agg_func_value);
 
-	throw Exception("invalid function: " + fnc->function);
+	throw Exception("invalid function: " + FunctionNode::function_name(fnc->function));
 }
 
 

usql/usql_dml.cpp

@@ -108,24 +108,21 @@ void USql::select_row(SelectFromTableNode &where_node,
 			rslt_row->setColumnValue((ColDefNode *) &rslt_tbl_col_defs[idx], col_value);
 		}
 	}
-
 	// for aggregate is validated more than needed
 	rslt_table->commit_row(*rslt_row);
 }
 
 bool USql::check_for_aggregate_only_functions(SelectFromTableNode &node, size_t result_cols_cnt) {
 	size_t aggregate_funcs = 0;
+
 	for (size_t i = 0; i < node.cols_names->size(); i++) {
 		SelectColNode * col_node = &node.cols_names->operator[](i);
-		if (col_node->value->node_type == NodeType::function) {
+		if (col_node->value->node_type == NodeType::function && ((FunctionNode *)col_node->value.get())->is_agg_function())
-			auto func_node = static_cast<FunctionNode *>(col_node->value.get());
-			if (func_node->function == "count" || func_node->function == "min" || func_node->function == "max")
 			aggregate_funcs++;
 	}
-	}
 	// check whether aggregates are not present or all columns are aggregates
 	if (aggregate_funcs > 0 && aggregate_funcs != result_cols_cnt) {
-		throw Exception("aggregate functions with no aggregates");
+		throw Exception("aggregate functions mixed with no aggregate functions in select clause");
 	}
 
 	return aggregate_funcs > 0;
@@ -229,20 +226,20 @@ std::tuple<int, ColDefNode> USql::get_node_definition(Table *table, Node * node,
 	} else if (node->node_type == NodeType::function) {
 		auto func_node = static_cast<FunctionNode *>(node);
 
-		if (func_node->function == "to_string") {
+		if (func_node->function == FunctionNode::Type::to_string) {
 			ColDefNode col_def = ColDefNode{col_name, ColumnType::varchar_type, col_order, 32, true};
-			return std::make_tuple(-1, col_def);
+			return std::make_tuple(FUNCTION_CALL, col_def);
-		} else if (func_node->function == "to_date") {
+		} else if (func_node->function == FunctionNode::Type::to_date) {
 			ColDefNode col_def = ColDefNode{col_name, ColumnType::integer_type, col_order, 1, true};
-			return std::make_tuple(-1, col_def);
+			return std::make_tuple(FUNCTION_CALL, col_def);
-		} else if (func_node->function == "pp") {
+		} else if (func_node->function == FunctionNode::Type::pp) {
 			ColDefNode col_def = ColDefNode{col_name, ColumnType::varchar_type, col_order, 10, true};
-			return std::make_tuple(-1, col_def);
+			return std::make_tuple(FUNCTION_CALL, col_def);
-		} else if (func_node->function == "lower" || func_node->function == "upper") {
+		} else if (func_node->function == FunctionNode::Type::lower || func_node->function == FunctionNode::Type::upper) {
 			// TODO get length, use get_db_column_definition
 			ColDefNode col_def = ColDefNode{col_name, ColumnType::varchar_type, col_order, 256, true};
-			return std::make_tuple(-1, col_def);
+			return std::make_tuple(FUNCTION_CALL, col_def);
-		} else if (func_node->function == "min" || func_node->function == "max") {
+		} else if (func_node->function == FunctionNode::Type::min || func_node->function == FunctionNode::Type::max) {
 			auto col_type= ColumnType::float_type;
 			size_t col_len = 1;
 			auto & v = func_node->params[0];
@@ -252,10 +249,10 @@ std::tuple<int, ColDefNode> USql::get_node_definition(Table *table, Node * node,
 				col_len = src_col_def.length;
 			}
 			ColDefNode col_def = ColDefNode{col_name, col_type, col_order, col_len, true};
-			return std::make_tuple(-1, col_def);
+			return std::make_tuple(FUNCTION_CALL, col_def);
-		} else if (func_node->function == "count") {
+		} else if (func_node->function == FunctionNode::Type::count) {
 			ColDefNode col_def = ColDefNode{col_name, ColumnType::integer_type, col_order, 1, true};
-			return std::make_tuple(-1, col_def);
+			return std::make_tuple(FUNCTION_CALL, col_def);
 		}
 		throw Exception("Unsupported function");
 

usql/usql_function.cpp

@@ -11,6 +11,7 @@ std::unique_ptr<ValueNode> USql::to_string_function(const std::vector<std::uniqu
 	long date = evaluatedPars[0]->getDateValue();
 	std::string format = evaluatedPars[1]->getStringValue();
 	std::string formatted_date = date_to_string(date, format);
+	
 	return std::make_unique<StringValueNode>(formatted_date);
 }
 
@@ -18,6 +19,7 @@ std::unique_ptr<ValueNode> USql::to_date_function(const std::vector<std::unique_
 	std::string date = evaluatedPars[0]->getStringValue();
 	std::string format = evaluatedPars[1]->getStringValue();
 	long epoch_time = string_to_date(date, format);
+	
 	return std::make_unique<IntValueNode>(epoch_time);        // No DateValueNode for now
 }
 
@@ -27,6 +29,7 @@ std::unique_ptr<ValueNode> USql::date_add_function(const std::vector<std::unique
 	std::string part = evaluatedPars[2]->getStringValue();
 
 	long new_date = add_to_date(datetime, quantity, part);
+	
 	return std::make_unique<IntValueNode>(new_date);        // No DateValueNode for now
 }
 
@@ -34,51 +37,57 @@ std::unique_ptr<ValueNode> USql::date_add_function(const std::vector<std::unique
 std::unique_ptr<ValueNode> USql::upper_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
 	std::string str = evaluatedPars[0]->getStringValue();
 	std::transform(str.begin(), str.end(), str.begin(), [](unsigned char c) -> unsigned char { return toupper(c); });
+	
 	return std::make_unique<StringValueNode>(str);
 }
 
 std::unique_ptr<ValueNode> USql::lower_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
 	std::string str = evaluatedPars[0]->getStringValue();
 	std::transform(str.begin(), str.end(), str.begin(), [](unsigned char c) -> unsigned char { return tolower(c); });
+	
 	return std::make_unique<StringValueNode>(str);
 }
 
 std::unique_ptr<ValueNode> USql::pp_function(const std::vector<std::unique_ptr<ValueNode>> &evaluatedPars) {
+	constexpr auto k_num_format_rpad = 10;
+	constexpr auto k_num_format_maxlen = 20;
+
 	auto &parsed_value = evaluatedPars[0];
 
 	if (parsed_value->node_type == NodeType::int_value || parsed_value->node_type == NodeType::float_value) {
 		std::string format = evaluatedPars.size() > 1 ? evaluatedPars[1]->getStringValue() : "";
-		char buf[20] {0};	// TODO constant here
+		char buf[k_num_format_maxlen] {0};
 		double value = parsed_value->getDoubleValue();
 
 		if (format == "100%")
-			std::snprintf(buf, 20, "%.2f%%", value);
+			std::snprintf(buf, k_num_format_maxlen, "%.2f%%", value);
 		else if (format == "%.2f")
-			std::snprintf(buf, 20, "%.2f", value);
+			std::snprintf(buf, k_num_format_maxlen, "%.2f", value);
 		else if (value >= 1000000000000)
-			std::snprintf(buf, 20, "%7.2fT", value/1000000000000);
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fT", value/1000000000000);
 		else if (value >= 1000000000)
-			std::sprintf(buf, "%7.2fB", value/1000000000);
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fB", value/1000000000);
 		else if (value >= 1000000)
-			std::snprintf(buf, 20, "%7.2fM", value/1000000);
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fM", value/1000000);
 		else if (value >= 100000)
-			std::snprintf(buf, 20, "%7.2fM", value/100000);	// 0.12M
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fM", value/100000);	// 0.12M
 		else if (value <= -1000000000000)
-			std::snprintf(buf, 20, "%7.2fT", value/1000000000000);
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fT", value/1000000000000);
 		else if (value <= -1000000000)
-			std::snprintf(buf, 20, "%7.2fB", value/1000000000);
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fB", value/1000000000);
 		else if (value <= -1000000)
-			std::snprintf(buf, 20, "%7.2fM", value/1000000);
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fM", value/1000000);
 		else if (value <= -100000)
-			std::snprintf(buf, 20, "%7.2fM", value/100000);	// 0.12M
+			std::snprintf(buf, k_num_format_maxlen, "%7.2fM", value/100000);	// 0.12M
 		else if (value == 0)
 			buf[0]='0';
 		else
-			return std::make_unique<StringValueNode>(parsed_value->getStringValue().substr(0, 10));
+			return std::make_unique<StringValueNode>(parsed_value->getStringValue().substr(0, k_num_format_rpad));
-		// TODO introduce constant for 10
+
 		std::string s {buf};
-		return std::make_unique<StringValueNode>(string_padd(s.erase(s.find_last_not_of(' ')+1), 10, ' ', false));
+		return std::make_unique<StringValueNode>(string_padd(s.erase(s.find_last_not_of(' ') + 1), k_num_format_rpad, ' ', false));
 	}
+
 	return std::make_unique<StringValueNode>(parsed_value->getStringValue());
 }