parser3/src/classes/table.C - diff

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Diff for /parser3/src/classes/table.C between versions 1.172.2.14.2.13 and 1.183

version 1.172.2.14.2.13, 2003/03/24 11:45:28	version 1.183, 2003/09/25 09:15:02
Line 40 DECLARE_CLASS_VAR(table, new MTable, 0);	Line 40 DECLARE_CLASS_VAR(table, new MTable, 0);
#define SQL_OFFSET_NAME "offset"	#define SQL_OFFSET_NAME "offset"
#define SQL_DEFAULT_NAME "default"	#define SQL_DEFAULT_NAME "default"
#define SQL_DISTINCT_NAME "distinct"	#define SQL_DISTINCT_NAME "distinct"
	#define TABLE_REVERSE_NAME "reverse"

// globals	// globals

const String sql_limit_name(SQL_LIMIT_NAME);	String sql_limit_name(SQL_LIMIT_NAME);
const String sql_offset_name(SQL_OFFSET_NAME);	String sql_offset_name(SQL_OFFSET_NAME);
const String sql_default_name(SQL_DEFAULT_NAME);	String sql_default_name(SQL_DEFAULT_NAME);
const String sql_distinct_name(SQL_DISTINCT_NAME);	String sql_distinct_name(SQL_DISTINCT_NAME);
	String table_reverse_name(TABLE_REVERSE_NAME);

// methods	// methods

static void get_copy_options(Request& r, MethodParams* params, int param_index,	static Table::Action_options get_action_options(Request& r, MethodParams& params,
const Table& source,	const Table& source) {
int& offset,	Table::Action_options result;
int& limit) {	if(!params.count())
	return result;
offset=0;
limit=0;	Value& maybe_options=params.last();
if(params->count()<=param_index)	/* can not do it:
return;	want to enable ^table::create[$source;
	# $.option[]
Value& voptions=params->as_no_junction(param_index, "options must be hash, not code");	]
if(!voptions.is_string()) {	but there is ^table.locate[name;value]
if(HashStringValue* options=voptions.get_hash()) {
int valid_options=0;	if(maybe_options.is_string()) { // allow empty options
if(Value* voffset=options->get(sql_offset_name)) {	result.defined=true;
valid_options++;	return result;
if(voffset->is_string()) {	}
const String& soffset=*voffset->get_string();	*/
if(soffset == "cur")	HashStringValue* options=maybe_options.get_hash();
offset=source.current();	if(!options)
else	return result;
throw Exception("parser.runtime",
&soffset,	result.defined=true;
"must be 'cur' string or expression");	bool defined_offset=false;
} else
offset=r.process_to_value(*voffset).as_int();	int valid_options=0;
}	if(Value* voffset=options->get(sql_offset_name)) {
if(Value* vlimit=options->get(sql_limit_name)) {	valid_options++;
valid_options++;	defined_offset=true;
limit=r.process_to_value(*vlimit).as_int();	if(voffset->is_string()) {
if(!limit) // zero limit = should be 'nothing to copy', for methods zero means 'all'	const String& soffset=*voffset->get_string();
limit=-1; // thus fixing	if(soffset == "cur")
}	result.offset=source.current();
if(valid_options!=options->count())	else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	&soffset,
"called with invalid option");	"must be 'cur' string or expression");
} else	} else
throw Exception("parser.runtime",	result.offset=r.process_to_value(*voffset).as_int();
0,	}
"options must be hash");	if(Value* vlimit=options->get(sql_limit_name)) {
}	valid_options++;
	result.limit=r.process_to_value(*vlimit).as_int();
	}
	if(Value vreverse=(Value )options->get(table_reverse_name)) {
	valid_options++;
	result.reverse=r.process_to_value(*vreverse).as_bool();
	if(result.reverse && !defined_offset)
	result.offset=source.count()-1;
	}

	if(valid_options!=options->count())
	throw Exception("parser.runtime",
	0,
	"called with invalid option");

	return result;
	}
	static void check_option_param(bool options_defined,
	MethodParams& params, size_t next_param_index,
	const char *msg) {
	if(next_param_index+(options_defined?1:0) != params.count())
	throw Exception("parser.runtime",
	0,
	"%s", msg);
}	}

static void _create(Request& r, MethodParams* params) {	static void _create(Request& r, MethodParams& params) {
// clone/copy part?	// clone/copy part?
if(Table source=(params)[0]->get_table()) {	if(Table *source=params[0].get_table()) {
int offset, limit;	Table::Action_options o=get_action_options(r, params, *source);
get_copy_options(r, params, 1, *source,	check_option_param(o.defined, params, 1,
offset, limit);	"too many parameters");
GET_SELF(r, VTable).set_table(new Table(source, offset, limit));	GET_SELF(r, VTable).set_table(new Table(source, o));
return;	return;
}	}

// data is last parameter	// data is last parameter
Temp_lang temp_lang(r, String::L_PASS_APPENDED);	Temp_lang temp_lang(r, String::L_PASS_APPENDED);
const String& data=	const String& data=
r.process_to_string(params->as_junction(params->count()-1, "body must be code"));	r.process_to_string(params.as_junction(params.count()-1, "body must be code"));

// parse columns	// parse columns
	size_t raw_pos_after=0;
Table::columns_type columns;	Table::columns_type columns;
if(params->count()==2) {	if(params.count()==2) {
columns=Table::columns_type(0); // nameless	columns=Table::columns_type(0); // nameless
} else {	} else {
columns=Table::columns_type(new ArrayString);	columns=Table::columns_type(new ArrayString);

ArrayString head;	ArrayString head;
size_t pos_after=0;	data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
data.split(head, pos_after, "\n", String::L_AS_IS, 1);
if(head.count()) {	if(head.count()) {
size_t pos_after=0;	size_t col_pos_after=0;
head[0]->split(*columns, pos_after, "\t", String::L_AS_IS);	head[0]->split(*columns, col_pos_after, "\t", String::L_AS_IS);
}	}
}	}

Line 129 static void _create(Request& r, MethodPa	Line 154 static void _create(Request& r, MethodPa
// parse cells	// parse cells

ArrayString rows;	ArrayString rows;
size_t pos_after=0;	data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
data.split(rows, pos_after, "\n", String::L_AS_IS);
Array_iterator<const String*> i(rows);	Array_iterator<const String*> i(rows);
while(i.has_next()) {	while(i.has_next()) {
Table::element_type row(new ArrayString);	Table::element_type row(new ArrayString);
Line 139 static void _create(Request& r, MethodPa	Line 163 static void _create(Request& r, MethodPa
if(!string.length())	if(!string.length())
continue;	continue;

size_t pos_after=0;	size_t col_pos_after=0;
string.split(*row, pos_after, "\t", String::L_AS_IS);	string.split(*row, col_pos_after, "\t", String::L_AS_IS);
table+=row;	table+=row;
}	}

Line 148 static void _create(Request& r, MethodPa	Line 172 static void _create(Request& r, MethodPa
GET_SELF(r, VTable).set_table(table);	GET_SELF(r, VTable).set_table(table);
}	}

static void _load(Request& r, MethodParams* params) {	static void _load(Request& r, MethodParams& params) {
const String& first_param=params->as_string(0, "file name must be string");	const String& first_param=params.as_string(0, "file name must be string");
int filename_param_index=0;	int filename_param_index=0;
bool nameless=first_param=="nameless";	bool nameless=first_param=="nameless";
if(nameless)	if(nameless)
filename_param_index++;	filename_param_index++;
int options_param_index=filename_param_index+1;	size_t options_param_index=filename_param_index+1;

// loading text	// loading text
char *data=file_read_text(r.charsets.source(),	char *data=file_read_text(r.charsets,
r.absolute(params->as_string(filename_param_index, "file name must be string")),	r.absolute(params.as_string(filename_param_index, "file name must be string")),
true,	true,
options_param_index<params->count()?params->as_no_junction(options_param_index, "additional params must be hash").get_hash():0	options_param_index<params.count()?params.as_no_junction(options_param_index, "additional params must be hash").get_hash():0
);	);

// parse columns	// parse columns
Line 183 static void _load(Request& r, MethodPara	Line 207 static void _load(Request& r, MethodPara
}	}

// parse cells	// parse cells
Table& table=*new Table(columns);	Table& table=*new Table(columns);//��-�� realloc'��: 1000 ��
char *row_chars;	char *row_chars;
	int cells=0;
while(row_chars=getrow(&data)) {	while(row_chars=getrow(&data)) {
// remove empty&comment lines	// remove empty&comment lines
if(!row_chars \|\| row_chars == '#')	if(!row_chars \|\| row_chars == '#')
Line 192 static void _load(Request& r, MethodPara	Line 217 static void _load(Request& r, MethodPara
Table::element_type row(new ArrayString);	Table::element_type row(new ArrayString);
while(char *cell_chars=lsplit(&row_chars, '\t')) {	while(char *cell_chars=lsplit(&row_chars, '\t')) {
*row+=new String(cell_chars, 0, true);	*row+=new String(cell_chars, 0, true);
	cells++;
}	}
table+=row;	table+=row;
};	};
Line 201 static void _load(Request& r, MethodPara	Line 227 static void _load(Request& r, MethodPara
}	}

/// @todo "x\nx" "xxx""xx"	/// @todo "x\nx" "xxx""xx"
static void _save(Request& r, MethodParams* params) {	static void _save(Request& r, MethodParams& params) {
Value& vfile_name=params->as_no_junction(params->count()-1, "file name must not be code");	Value& vfile_name=params.as_no_junction(params.count()-1, "file name must not be code");

Table& table=GET_SELF(r, VTable).table();	Table& table=GET_SELF(r, VTable).table();

bool do_append=false;	bool do_append=false;
String sdata;	String sdata;
if(params->count()==1) { // named output	if(params.count()==1) { // named output
// write out names line	// write out names line
if(table.columns()) { // named table	if(table.columns()) { // named table
Array_iterator<const String> i(table.columns());	for(Array_iterator<const String> i(table.columns()); i.has_next(); ) {
while(i.has_next()) {
sdata.append(*i.next(), String::L_TABLE);	sdata.append(*i.next(), String::L_TABLE);
if(i.has_next())	if(i.has_next())
sdata.append("\t", 1, String::L_CLEAN);	sdata.append_know_length("\t", 1, String::L_CLEAN);
}	}
} else { // nameless table	} else { // nameless table
if(int lsize=table.count()?table[0]->count():0)	if(int lsize=table.count()?table[0]->count():0)
for(int column=0; column<lsize; column++) {	for(int column=0; column<lsize; column++) {
char *cindex_tab=new char[MAX_NUMBER];	char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
sdata.append(cindex_tab,	sdata.append_know_length(cindex_tab,
snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),	snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),
String::L_CLEAN);	String::L_CLEAN);
}	}
else	else
sdata.append("empty nameless table", 0, String::L_CLEAN);	sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
}	}
sdata.append("\n", 1, String::L_CLEAN);	sdata.append_know_length("\n", 1, String::L_CLEAN);
} else { // mode specified	} else { // mode specified
const String& mode=params->as_string(0, "mode must be string");	const String& mode=params.as_string(0, "mode must be string");
if(mode=="append")	if(mode=="append")
do_append=true;	do_append=true;
else if(mode=="nameless")	else if(mode=="nameless")
Line 244 static void _save(Request& r, MethodPara	Line 269 static void _save(Request& r, MethodPara
// data lines	// data lines
Array_iterator<ArrayString*> i(table);	Array_iterator<ArrayString*> i(table);
while(i.has_next()) {	while(i.has_next()) {
Array_iterator<const String> c(i.next());	for(Array_iterator<const String> c(i.next()); c.has_next(); ) {
while(c.has_next()) {	sdata.append(*c.next(), String::L_TABLE);
if(const String* s=c.next())
sdata.append(*s, String::L_TABLE);
if(c.has_next())	if(c.has_next())
sdata.append("\t", 1, String::L_CLEAN);	sdata.append_know_length("\t", 1, String::L_CLEAN);
}	}
sdata.append("\n", 1, String::L_CLEAN);	sdata.append_know_length("\n", 1, String::L_CLEAN);
}	}

// write	// write
Line 259 static void _save(Request& r, MethodPara	Line 282 static void _save(Request& r, MethodPara
sdata.cstr(), sdata.length(), true, do_append);	sdata.cstr(), sdata.length(), true, do_append);
}	}

static void _count(Request& r, MethodParams* ) {	static void _count(Request& r, MethodParams&) {
int result=GET_SELF(r, VTable).table().count();	int result=GET_SELF(r, VTable).table().count();
r.write_no_lang(*new VInt(result));	r.write_no_lang(*new VInt(result));
}	}

static void _line(Request& r, MethodParams* ) {	static void _line(Request& r, MethodParams&) {
int result=1+GET_SELF(r, VTable).table().current();	int result=1+GET_SELF(r, VTable).table().current();
r.write_no_lang(*new VInt(result));	r.write_no_lang(*new VInt(result));
}	}

static void _offset(Request& r, MethodParams* params) {	static void _offset(Request& r, MethodParams& params) {
Table& table=GET_SELF(r, VTable).table();	Table& table=GET_SELF(r, VTable).table();
if(params->count()) {	if(params.count()) {
bool absolute=false;	bool absolute=false;
if(params->count()>1) {	if(params.count()>1) {
const String& whence=params->as_string(0, "whence must be string");	const String& whence=params.as_string(0, "whence must be string");
if(whence=="cur")	if(whence=="cur")
absolute=false;	absolute=false;
else if(whence=="set")	else if(whence=="set")
Line 285 static void _offset(Request& r, MethodPa	Line 308 static void _offset(Request& r, MethodPa
"is invalid whence, valid are 'cur' or 'set'");	"is invalid whence, valid are 'cur' or 'set'");
}	}

Value& offset_expr=params->as_junction(params->count()-1, "offset must be expression");	Value& offset_expr=params.as_junction(params.count()-1, "offset must be expression");
table.offset(absolute, r.process_to_value(offset_expr).as_int());	table.offset(absolute, r.process_to_value(offset_expr).as_int());
} else	} else
r.write_no_lang(*new VInt(table.current()));	r.write_no_lang(*new VInt(table.current()));
}	}

static void _menu(Request& r, MethodParams* params) {	static void _menu(Request& r, MethodParams& params) {
Value& body_code=params->as_junction(0, "body must be code");	Value& body_code=params.as_junction(0, "body must be code");

Value* delim_maybe_code=params->count()>1?(*params)[1]:0;	Value* delim_maybe_code=params.count()>1?&params[1]:0;

Table& table=GET_SELF(r, VTable).table();	Table& table=GET_SELF(r, VTable).table();
bool need_delim=false;	bool need_delim=false;
Line 316 static void _menu(Request& r, MethodPara	Line 339 static void _menu(Request& r, MethodPara
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
	enum Table2hash_distint { D_ILLEGAL, D_FIRST, D_TABLES };
struct Row_info {	struct Row_info {
Request *r;	Request *r;
Table *table;	Table *table;
Value* key_code;	Value* key_code;
int key_field;	size_t key_field;
Array<int>* value_fields;	Array<int>* value_fields;
HashStringValue* hash;	HashStringValue* hash;
bool distinct;	Table2hash_distint distinct;
int row;	size_t row;
};	};
#endif	#endif
static void table_row_to_hash(Table::element_type row, Row_info *info) {	static void table_row_to_hash(Table::element_type row, Row_info *info) {
Line 339 static void table_row_to_hash(Table::ele	Line 363 static void table_row_to_hash(Table::ele
if(!key)	if(!key)
return; // ignore rows without key [too-short-record_array if-indexed]	return; // ignore rows without key [too-short-record_array if-indexed]

VHash* vhash=new VHash;	switch(info->distinct) {
HashStringValue& hash=vhash->hash();	case D_ILLEGAL: case D_FIRST:
for(int i=0; i<info->value_fields->count(); i++) {	{
int value_field=info->value_fields->get(i);	VHash* vhash=new VHash;
if(value_field<row->count())	HashStringValue& hash=vhash->hash();
hash.put(	for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
*info->table->columns()->get(value_field),	size_t value_field=i.next();
new VString(*row->get(value_field)));	if(value_field<row->count())
}	hash.put(
	*info->table->columns()->get(value_field),
	new VString(*row->get(value_field)));
	}

if(info->hash->put_dont_replace(*key, vhash)) // put. existed?	if(info->hash->put_dont_replace(*key, vhash)) // put. existed?
if(!info->distinct)	if(info->distinct==D_ILLEGAL)
throw Exception("parser.runtime",	throw Exception("parser.runtime",
key,	key,
"duplicate key");	"duplicate key");
	}
	break;
	case D_TABLES:
	{
	VTable* vtable=(VTable)info->hash->get(key); // put. table existed?
	Table* table;
	if(vtable)
	table=vtable->get_table();
	else {
	// no? creating table of same structure as source
	Table::Action_options table_options(0, 0);
	table=new Table(info->table, table_options/no rows, just structure*/);
	info->hash->put(*key, new VTable(table));
	}
	*table+=row;
	}
	break;
	default:
	throw Exception(0,
	0,
	"invalid distinct code (#%d)", info->distinct);
	}
}	}
static void _hash(Request& r, MethodParams* params) {	static void _hash(Request& r, MethodParams& params) {
Table& self_table=GET_SELF(r, VTable).table();	Table& self_table=GET_SELF(r, VTable).table();
VHash& result=*new VHash;	VHash& result=*new VHash;
if(Table::columns_type columns=self_table.columns())	if(Table::columns_type columns=self_table.columns())
if(columns->count()>0) {	if(columns->count()>0) {
bool distinct=false;	Table2hash_distint distinct=D_ILLEGAL;
int param_index=params->count()-1;	int param_index=params.count()-1;
if(param_index>0) {	if(param_index>0) {
if(HashStringValue* options=	if(HashStringValue* options=
params->as_no_junction(param_index, "param must not be code").get_hash()) {	params.as_no_junction(param_index, "param must not be code").get_hash()) {
--param_index;	--param_index;
int valid_options=0;	int valid_options=0;
if(Value* vdistinct=options->get(sql_distinct_name)) {	if(Value* vdistinct_code=options->get(sql_distinct_name)) {
valid_options++;	valid_options++;
distinct=r.process_to_value(*vdistinct).as_bool();	Value& vdistinct_value=r.process_to_value(*vdistinct_code);
	if(vdistinct_value.is_string()) {
	const String& sdistinct=*vdistinct_value.get_string();
	if(sdistinct=="tables")
	distinct=D_TABLES;
	else
	throw Exception("parser.runtime",
	&sdistinct,
	"must be 'tables' or true/false");
	} else
	distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
}	}
if(valid_options!=options->count())	if(valid_options!=options->count())
throw Exception("parser.runtime",	throw Exception("parser.runtime",
Line 384 static void _hash(Request& r, MethodPara	Line 443 static void _hash(Request& r, MethodPara

Array<int> value_fields;	Array<int> value_fields;
if(param_index>0) {	if(param_index>0) {
Value& value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");	if(distinct!=D_ILLEGAL && distinct!=D_FIRST)
	throw Exception("parser.runtime",
	0,
	"in distinct[tables] mode you may not specify value field(s)");
	Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
if(value_fields_param.is_string()) {	if(value_fields_param.is_string()) {
value_fields+=self_table.column_name2index(	value_fields+=self_table.column_name2index(
*value_fields_param.get_string(), true);	*value_fields_param.get_string(), true);
} else if(Table* value_fields_table=value_fields_param.get_table()) {	} else if(Table* value_fields_table=value_fields_param.get_table()) {
for(int i=0; i<value_fields_table->count(); i++) {	for(Array_iterator<Table::element_type> i(*value_fields_table);
const String& value_field_name=	i.has_next(); ) {
*value_fields_table->get(i)->get(0);	const String& value_field_name
value_fields+=self_table.column_name2index(value_field_name, true);	=*i.next()->get(0);
	value_fields
	+=self_table.column_name2index(value_field_name, true);
}	}
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
Line 400 static void _hash(Request& r, MethodPara	Line 465 static void _hash(Request& r, MethodPara
"value field(s) must be string or self_table"	"value field(s) must be string or self_table"
);	);
} else { // by all columns, including key	} else { // by all columns, including key
for(int i=0; i<columns->count(); i++)	if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST))
value_fields+=i;	for(size_t i=0; i<columns->count(); i++)
	value_fields+=i;
}	}


{	{
Row_info info;	Row_info info={0};
info.r=&r;	info.r=&r;
info.table=&self_table;	info.table=&self_table;
Value* key_param=(*params)[0];	Value* key_param=&params[0];
info.key_code=key_param->get_junction()?key_param:0;	info.key_code=key_param->get_junction()?key_param:0;
info.key_field=info.key_code?-1	info.key_field=info.key_code?-1
:self_table.column_name2index(key_param->as_string(), true);	:self_table.column_name2index(key_param->as_string(), true);
Line 451 static int sort_cmp_double(const void *a	Line 517 static int sort_cmp_double(const void *a
else	else
return 0;	return 0;
}	}
static void _sort(Request& r, MethodParams* params) {	static void _sort(Request& r, MethodParams& params) {
Value& key_maker=params->as_junction(0, "key-maker must be code");	Value& key_maker=params.as_junction(0, "key-maker must be code");

bool reverse=params->count()>1/..[desc\|asc\|]/?	bool reverse=params.count()>1/..[desc\|asc\|]/?
reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":	reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
false; // default=asc	false; // default=asc

Table& old_table=GET_SELF(r, VTable).table();	Table& old_table=GET_SELF(r, VTable).table();
Table& new_table=*new Table(old_table.columns());	Table& new_table=*new Table(old_table.columns());

Table_seq_item* seq=new Table_seq_item[old_table.count()];	Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
int i;	int i;

// calculate key values	// calculate key values
bool key_values_are_strings=true;	bool key_values_are_strings=true;
for(i=0; i<old_table.count(); i++) {	int old_count=old_table.count();
	for(i=0; i<old_count; i++) {
old_table.set_current(i);	old_table.set_current(i);
// calculate key value	// calculate key value
seq[i].row=old_table[i];	seq[i].row=old_table[i];
Value* value=r.process_to_value(key_maker).as_expr_result(true/return string as-is/);	Value& value=r.process_to_value(key_maker).as_expr_result(true/return string as-is/);
if(i==0) // determining key values type by first one	if(i==0) // determining key values type by first one
key_values_are_strings=value->is_string();	key_values_are_strings=value.is_string();

if(key_values_are_strings)	if(key_values_are_strings)
seq[i].value.c_str=value->as_string().cstr();	seq[i].value.c_str=value.as_string().cstr();
else	else
seq[i].value.d=value->as_double();	seq[i].value.d=value.as_double();
}	}
// sort keys	// sort keys
_qsort(seq, old_table.count(), sizeof(Table_seq_item),	_qsort(seq, old_count, sizeof(Table_seq_item),
key_values_are_strings?sort_cmp_string:sort_cmp_double);	key_values_are_strings?sort_cmp_string:sort_cmp_double);

// reorder table as they require in 'seq'	// reorder table as they require in 'seq'
for(i=0; i<old_table.count(); i++)	for(i=0; i<old_count; i++)
new_table+=Table::element_type(seq[reverse?old_table.count()-1-i:i].row);	new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);

	delete[] seq;

// replace any previous table value	// replace any previous table value
GET_SELF(r, VTable).set_table(new_table);	GET_SELF(r, VTable).set_table(new_table);
}	}

static bool _locate_expression(Request& r, MethodParams* params) {	#ifndef DOXYGEN
if(params->count()>1)	struct Expression_is_true_info {
throw Exception("parser.runtime",	Request* r;
0,	Value* expression_code;
"locate by expression has only one parameter - expression");	};
	#endif
Value& expression_code=params->as_junction(0, "must be expression");	static bool expression_is_true(Table& self, void* ainfo) {
	Expression_is_true_info& info=static_cast<Expression_is_true_info>(ainfo);
	return info.r->process_to_value(*info.expression_code).as_bool();
	}
	static bool _locate_expression(Table& table, Table::Action_options o,
	Request& r, MethodParams& params) {
	check_option_param(o.defined, params, 1,
	"locate by expression only has parameters: expression and, maybe, options");
	Value& expression_code=params.as_junction(0, "must be expression");

	Expression_is_true_info info={&r, &expression_code};
	return table.table_first_that(expression_is_true, &info, o);
	}
	static bool _locate_name_value(Table& table, Table::Action_options o,
	Request& r, MethodParams& params) {
	check_option_param(o.defined, params, 2,
	"locate by locate by name has parameters: name, value and, maybe, options");
	const String& name=params.as_string(0, "column name must be string");
	const String& value=params.as_string(1, "value must be string");
	return table.locate(name, value, o);
	}
	static void _locate(Request& r, MethodParams& params) {
Table& table=GET_SELF(r, VTable).table();	Table& table=GET_SELF(r, VTable).table();
int saved_current=table.current();
int size=table.count();
for(int row=0; row<size; row++) {
table.set_current(row);

if(r.process_to_value(expression_code).as_bool())	Table::Action_options o=get_action_options(r, params, table);
return true;
}
table.set_current(saved_current);
return false;
}
static bool _locate_name_value(Request& r, MethodParams* params) {
if(params->count()>2)
throw Exception("parser.runtime",
0,
"locate by name and value has only two parameters - name and value");

Table& table=GET_SELF(r, VTable).table();	bool result=params[0].get_junction()?
return table.locate(	_locate_expression(table, o, r, params) :
params->as_string(0, "column name must be string"),	_locate_name_value(table, o, r, params);
params->as_string(1, "value must be string")
);
}
static void _locate(Request& r, MethodParams* params) {
bool result=(*params)[0]->get_junction()?
_locate_expression(r, params) :
_locate_name_value(r, params);
r.write_no_lang(*new VBool(result));	r.write_no_lang(*new VBool(result));
}	}

static void _flip(Request& r, MethodParams* params) {
	static void _flip(Request& r, MethodParams& params) {
Table& old_table=GET_SELF(r, VTable).table();	Table& old_table=GET_SELF(r, VTable).table();
Table& new_table=*new Table(old_table.columns());	Table& new_table=*new Table(old_table.columns());
if(old_table.count())	if(size_t old_count=old_table.count())
if(int old_cols=old_table[0]->count())	if(size_t old_cols=old_table[0]->count())
for(int column=0; column<old_cols; column++) {	for(size_t column=0; column<old_cols; column++) {
Table::element_type new_row(new ArrayString(old_table.count()));	Table::element_type new_row(new ArrayString(old_count));
for(int i=0; i<old_table.count(); i++) {	for(size_t i=0; i<old_count; i++) {
Table::element_type old_row=old_table[i];	Table::element_type old_row=old_table[i];
*new_row+=column<old_row->count()?old_row->get(column):new String;	*new_row+=column<old_row->count()?old_row->get(column):new String;
}	}
Line 547 static void _flip(Request& r, MethodPara	Line 616 static void _flip(Request& r, MethodPara
r.write_no_lang(*new VTable(&new_table));	r.write_no_lang(*new VTable(&new_table));
}	}

static void _append(Request& r, MethodParams* params) {	static void _append(Request& r, MethodParams& params) {
// data	// data
Temp_lang temp_lang(r, String::L_PASS_APPENDED);	Temp_lang temp_lang(r, String::L_PASS_APPENDED);
const String& string=r.process_to_string(params->as_junction(0, "body must be code"));	const String& string=r.process_to_string(params.as_junction(0, "body must be code"));

// parse cells	// parse cells
Table::element_type row=new ArrayString;	Table::element_type row=new ArrayString;
Line 560 static void _append(Request& r, MethodPa	Line 629 static void _append(Request& r, MethodPa
GET_SELF(r, VTable).table()+=row;	GET_SELF(r, VTable).table()+=row;
}	}

static void _join(Request& r, MethodParams* params) {	static void join_named_row(Table& src, Table* dest) {
Table* maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();	Table::columns_type dest_columns=dest->columns();
	size_t dest_columns_count=dest_columns->count();
	Table::element_type dest_row(new ArrayString(dest_columns_count));
	for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
	const String* src_item=src.item(*dest_columns->get(dest_column));
	*dest_row+=src_item?src_item:new String;
	}
	*dest+=dest_row;
	}
	static void join_nameless_row(Table& src, Table* dest) {
	*dest+=src[src.current()];
	}
	static void _join(Request& r, MethodParams& params) {
	Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
if(!maybe_src)	if(!maybe_src)
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	0,
"source is not a table");	"source is not a table");

Table& src=*maybe_src;	Table& src=*maybe_src;

	Table::Action_options o=get_action_options(r, params, src);
	check_option_param(o.defined, params, 1,
	"invalid extra parameter");

Table& dest=GET_SELF(r, VTable).table();	Table& dest=GET_SELF(r, VTable).table();
if(&src == &dest)	if(&src == &dest)
throw Exception("parser.runtime",	throw Exception("parser.runtime",
0,	0,
"source and destination are same table");	"source and destination are same table");

int offset, limit;	if(Table::columns_type dest_columns=dest.columns()) // dest is named
get_copy_options(r, params, 1, src,	src.table_for_each(join_named_row, &dest, o);
offset, limit);	else // dest is nameless
	src.table_for_each(join_nameless_row, &dest, o);
if(Table::columns_type dest_columns=dest.columns()) { // dest is named
int saved_src_current=src.current();
int m=src.count()-offset;
if(!limit \|\| limit>m)
limit=m;
int end=offset+limit;
for(int src_row=offset; src_row<end; src_row++) {
src.set_current(src_row);
Table::element_type dest_row(new ArrayString(src.count()));
for(int dest_column=0; dest_column<dest_columns->count(); dest_column++) {
const String* src_item=src.item(*dest_columns->get(dest_column));
*dest_row+=src_item?src_item:new String;
}
dest+=dest_row;
}
src.set_current(saved_src_current);
} else { // dest is nameless
for(int src_row=0; src_row<src.count(); src_row++)
dest+=src[src_row];
}
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
Line 611 public:	Line 677 public:
columns(*new ArrayString), row(0), table(0) {	columns(*new ArrayString), row(0), table(0) {
}	}

bool add_column(SQL_Error& error, void *ptr, size_t size) {	bool add_column(SQL_Error& error, const char *str, size_t length) {
try {	try {
columns+=new String((const char* )ptr, size, true);	columns+=new String(str, length, true);
return false;	return false;
} catch(...) {	} catch(...) {
error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");	error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
Line 638 public:	Line 704 public:
return true;	return true;
}	}
}	}
bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {	bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
try {	try {
String& cell=*new String;	String& cell=*new String;
if(size)	if(length)
cell.append((const char* )ptr, size, String::L_TAINTED);	cell.append_know_length(str, length, String::L_TAINTED);
*row+=&cell;	*row+=&cell;
return false;	return false;
} catch(...) {	} catch(...) {
Line 652 public:	Line 718 public:
}	}
};	};
#endif	#endif
static void _sql(Request& r, MethodParams* params) {	static void _sql(Request& r, MethodParams& params) {
Value& statement=params->as_junction(0, "statement must be code");	Value& statement=params.as_junction(0, "statement must be code");

ulong limit=0;	ulong limit=0;
ulong offset=0;	ulong offset=0;
if(params->count()>1) {	if(params.count()>1) {
Value& voptions=params->as_no_junction(1, "options must be hash, not code");	Value& voptions=params.as_no_junction(1, "options must be hash, not code");
if(!voptions.is_string())	if(!voptions.is_string())
if(HashStringValue* options=voptions.get_hash()) {	if(HashStringValue* options=voptions.get_hash()) {
int valid_options=0;	int valid_options=0;
Line 714 static void _sql(Request& r, MethodParam	Line 780 static void _sql(Request& r, MethodParam
GET_SELF(r, VTable).set_table(result);	GET_SELF(r, VTable).set_table(result);
}	}

static void _columns(Request& r, MethodParams* ) {	static void _columns(Request& r, MethodParams&) {

Table::columns_type result_columns(new ArrayString);	Table::columns_type result_columns(new ArrayString);
*result_columns+=new String("column");	*result_columns+=new String("column");
Line 722 static void _columns(Request& r, MethodP	Line 788 static void _columns(Request& r, MethodP

Table& source_table=GET_SELF(r, VTable).table();	Table& source_table=GET_SELF(r, VTable).table();
if(Table::columns_type source_columns=source_table.columns()) {	if(Table::columns_type source_columns=source_table.columns()) {
Array_iterator<const String> i(source_columns);	for(Array_iterator<const String> i(source_columns); i.has_next(); ) {
while(i.has_next()) {
Table::element_type result_row(new ArrayString);	Table::element_type result_row(new ArrayString);
*result_row+=i.next();	*result_row+=i.next();
result_table+=result_row;	result_table+=result_row;
Line 733 static void _columns(Request& r, MethodP	Line 798 static void _columns(Request& r, MethodP
r.write_no_lang(*new VTable(&result_table));	r.write_no_lang(*new VTable(&result_table));
}	}

static void _select(Request& r, MethodParams* params) {	static void _select(Request& r, MethodParams& params) {
Value& vcondition=params->as_junction(0, "condition must be expression");	Value& vcondition=params.as_junction(0, "condition must be expression");

Table& source_table=GET_SELF(r, VTable).table();	Table& source_table=GET_SELF(r, VTable).table();
Table& result_table=*new Table(source_table.columns());	Table& result_table=*new Table(source_table.columns());
Line 798 MTable::MTable(): Methoded("table") {	Line 863 MTable::MTable(): Methoded("table") {
add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);	add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);

// ^table.locate[field;value]	// ^table.locate[field;value]
add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);	add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);

// ^table.flip[]	// ^table.flip[]
add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);	add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);

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Removed from v.1.172.2.14.2.13
changed lines
	Added in v.1.183