parser3/src/classes/hash.C - diff

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Diff for /parser3/src/classes/hash.C between versions 1.46 and 1.56

version 1.46, 2002/08/29 12:22:46	version 1.56, 2003/04/25 11:39:54
Line 1	Line 1
/** @file	/** @file
Parser: @b hash parser class.	Parser: @b hash parser class.

Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)	Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
*/	*/

Line 31 public: // Methoded	Line 31 public: // Methoded
// methods	// methods

#ifndef DOXYGEN	#ifndef DOXYGEN
class Hash_sql_event_handlers : public SQL_Driver_query_event_handlers {	class Hash_sql_event_handlers: public SQL_Driver_query_event_handlers {
public:	public:
Hash_sql_event_handlers(Pool& apool, const String& amethod_name,	Hash_sql_event_handlers(Pool& apool, const String& amethod_name,
const String& astatement_string, const char *astatement_cstr,	const String& astatement_string, const char *astatement_cstr,
Hash& arows_hash) :	bool adistinct,
	Hash& arows_hash):
pool(apool),	pool(apool),
method_name(amethod_name),	method_name(amethod_name),
statement_string(astatement_string),	statement_string(astatement_string),
statement_cstr(astatement_cstr),	statement_cstr(astatement_cstr),
	distinct(adistinct),
rows_hash(arows_hash),	rows_hash(arows_hash),
columns(pool),	columns(pool),
row_index(0) {	row_index(0) {
}	}
void add_column(void *ptr, size_t size) {	bool add_column(SQL_Error& error, void *ptr, size_t size) {
String *column=new(pool) String(pool);	try {
column->APPEND_TAINTED(	String *column=new(pool) String(pool);
(const char *)ptr, size,	column->APPEND_TAINTED(
statement_cstr, 0);	(const char *)ptr, size,
columns+=column;	statement_cstr, 0);
	columns+=column;

	return false;
	} catch(...) {
	error=SQL_Error("exception occured in Hash_sql_event_handlers::add_column");
	return true;
	}
}	}
void before_rows() {	bool before_rows(SQL_Error& error) {
if(columns.size()<=1)	if(columns.size()<=1) {
throw Exception("parser.runtime",	error=SQL_Error("parser.runtime",
&method_name,	&method_name,
"column count must be more than 1 to create a hash");	"column count must be more than 1 to create a hash");
	return true;
	}

	return false;
}	}
void add_row() {	bool add_row(SQL_Error& /error/) {
column_index=0;	column_index=0;
	return false;
}	}
void add_row_cell(void *ptr, size_t size) {	bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {
String *cell=new(pool) String(pool);	try {
if(size)	String *cell=new(pool) String(pool);
cell->APPEND_TAINTED(	if(size)
(const char *)ptr, size,	cell->APPEND_TAINTED(
statement_cstr, row_index++);	(const char *)ptr, size,
if(column_index==0) {	statement_cstr, row_index++);
VHash *row_vhash=new(pool) VHash(pool);	if(column_index==0) {
row_hash=row_vhash->get_hash(0);	VHash *row_vhash=new(pool) VHash(pool);
rows_hash.put(*cell, row_vhash);	row_hash=row_vhash->get_hash(0);
} else	if(rows_hash.put_dont_replace(*cell, row_vhash)) // put. existed?
row_hash->put(columns.get_string(column_index), new(pool) VString(cell));	if(!distinct) {
column_index++;	error=SQL_Error("parser.runtime",
	cell,
	"duplicate key");
	return true;
	}
	} else
	row_hash->put(columns.get_string(column_index), new(pool) VString(cell));
	column_index++;

	return false;
	} catch(...) {
	error=SQL_Error("exception occured in Hash_sql_event_handlers::add_row_cell");
	return true;
	}
}	}

private:	private:
Pool& pool;	Pool& pool;
const String& method_name;	const String& method_name;
const String& statement_string; const char *statement_cstr;	const String& statement_string; const char *statement_cstr;
	bool distinct;
Hash& rows_hash;	Hash& rows_hash;
Hash *row_hash;	Hash *row_hash;
int column_index;	int column_index;
Line 91 static void copy_all_overwrite_to(const	Line 119 static void copy_all_overwrite_to(const
Hash& dest=static_cast<Hash >(info);	Hash& dest=static_cast<Hash >(info);
dest.put(key, value);	dest.put(key, value);
}	}
static void _create_or_add(Request& r, const String& method_name, MethodParams *params) {	static void _create_or_add(Request& r, const String& method_name, MethodParams *params,
	bool is_create) {
Pool& pool=r.pool();	Pool& pool=r.pool();

if(params->size()) {	if(params->size()) {
Value& vb=params->as_no_junction(0, "param must be hash");	Value& vb_maybehash=params->as_no_junction(0, "param must be hash");
if(Hash *b=vb.get_hash(&method_name))	if(VHash* vbh=static_cast<VHash*>(vb_maybehash.as("hash", false))) {
b->for_each(copy_all_overwrite_to, &static_cast<VHash *>(r.self)->hash(&method_name));	VHash& vah=static_cast<VHash >(r.get_self());

	Hash& a=vah.hash(&method_name);
	Hash& b=vbh->hash(&method_name);
	b.for_each(copy_all_overwrite_to, &a);

	if(is_create)
	vah.set_default(vbh->get_default());
	} else if(!vb_maybehash.is_string()) // allow ^hash::create[^rem{xxx}]
	throw Exception("parser.runtime",
	&method_name,
	"param must be hash");
}	}
}	}
	static void _create(Request& r, const String& method_name, MethodParams *params) {
	_create_or_add(r, method_name, params, true);
	}
	static void _add(Request& r, const String& method_name, MethodParams *params) {
	_create_or_add(r, method_name, params, false);
	}


static void remove_key_from(const Hash::Key& key, Hash::Val value, void info) {	static void remove_key_from(const Hash::Key& key, Hash::Val value, void info) {
Hash& dest=static_cast<Hash >(info);	Hash& dest=static_cast<Hash >(info);
Line 110 static void _sub(Request& r, const Strin	Line 157 static void _sub(Request& r, const Strin

Value& vb=params->as_no_junction(0, "param must be hash");	Value& vb=params->as_no_junction(0, "param must be hash");
if(Hash *b=vb.get_hash(&method_name))	if(Hash *b=vb.get_hash(&method_name))
b->for_each(remove_key_from, &static_cast<VHash *>(r.self)->hash(&method_name));	b->for_each(remove_key_from, &static_cast<VHash *>(r.get_self())->hash(&method_name));
}	}

static void copy_all_dontoverwrite_to(const Hash::Key& key, Hash::Val value, void info) {	static void copy_all_dontoverwrite_to(const Hash::Key& key, Hash::Val value, void info) {
Line 121 static void _union(Request& r, const Str	Line 168 static void _union(Request& r, const Str
Pool& pool=r.pool();	Pool& pool=r.pool();

// dest = copy of self	// dest = copy of self
Hash& dest=new(pool) Hash(static_cast<VHash >(r.self)->hash(&method_name));	Hash& dest=new(pool) Hash(static_cast<VHash >(r.get_self())->hash(&method_name));
// dest += b	// dest += b
Value& vb=params->as_no_junction(0, "param must be hash");	Value& vb=params->as_no_junction(0, "param must be hash");
if(Hash *b=vb.get_hash(&method_name))	if(Hash *b=vb.get_hash(&method_name))
Line 157 static void _intersection(Request& r, co	Line 204 static void _intersection(Request& r, co
b,	b,
&dest	&dest
};	};
static_cast<VHash *>(r.self)->hash(&method_name).for_each(copy_intersection_to, &info);	static_cast<VHash *>(r.get_self())->hash(&method_name).for_each(copy_intersection_to, &info);
}	}

// return result	// return result
Line 178 static void _intersects(Request& r, cons	Line 225 static void _intersects(Request& r, cons
// dest += b	// dest += b
Value& vb=params->as_no_junction(0, "param must be hash");	Value& vb=params->as_no_junction(0, "param must be hash");
if(Hash *b=vb.get_hash(&method_name))	if(Hash *b=vb.get_hash(&method_name))
yes=static_cast<VHash *>(r.self)->hash(&method_name).first_that(intersects, b)!=0;	yes=static_cast<VHash *>(r.get_self())->hash(&method_name).first_that(intersects, b)!=0;

// return result	// return result
r.write_no_lang(*new(pool) VBool(pool, yes));	r.write_no_lang(*new(pool) VBool(pool, yes));
Line 192 static void _sql(Request& r, const Strin	Line 239 static void _sql(Request& r, const Strin

ulong limit=0;	ulong limit=0;
ulong offset=0;	ulong offset=0;
	bool distinct=false;
if(params->size()>1) {	if(params->size()>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(Hash *options=voptions.get_hash(&method_name)) {	if(Hash *options=voptions.get_hash(&method_name)) {
if(Value vlimit=(Value )options->get(*sql_limit_name))	int valid_options=0;
	if(Value vlimit=(Value )options->get(*sql_limit_name)) {
	valid_options++;
limit=(ulong)r.process_to_value(*vlimit).as_double();	limit=(ulong)r.process_to_value(*vlimit).as_double();
if(Value voffset=(Value )options->get(*sql_offset_name))	}
	if(Value voffset=(Value )options->get(*sql_offset_name)) {
	valid_options++;
offset=(ulong)r.process_to_value(*voffset).as_double();	offset=(ulong)r.process_to_value(*voffset).as_double();
	}
	if(Value vdistinct=(Value )options->get(*sql_distinct_name)) {
	valid_options++;
	distinct=r.process_to_value(*vdistinct).as_bool();
	}
	if(valid_options!=options->size())
	throw Exception("parser.runtime",
	&method_name,
	"called with invalid option");
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
&method_name,	&method_name,
Line 210 static void _sql(Request& r, const Strin	Line 271 static void _sql(Request& r, const Strin
const String& statement_string=r.process_to_string(statement);	const String& statement_string=r.process_to_string(statement);
const char *statement_cstr=	const char *statement_cstr=
statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name));	statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name));
Hash& hash=static_cast<VHash *>(r.self)->hash(&method_name);	Hash& hash=static_cast<VHash *>(r.get_self())->hash(&method_name);
hash.clear();	hash.clear();
Hash_sql_event_handlers handlers(pool, method_name,	Hash_sql_event_handlers handlers(pool, method_name,
statement_string, statement_cstr, hash);	statement_string, statement_cstr,
	distinct,
	hash);

r.connection(&method_name)->query(	r.connection(&method_name)->query(
statement_cstr, offset, limit,	statement_cstr, offset, limit,
Line 236 static void _keys(Request& r, const Stri	Line 299 static void _keys(Request& r, const Stri
columns+=new(pool) String(pool, "key");	columns+=new(pool) String(pool, "key");
Table& table=*new(pool) Table(pool, &method_name, &columns);	Table& table=*new(pool) Table(pool, &method_name, &columns);

static_cast<VHash *>(r.self)->hash(&method_name).for_each(keys_collector, &table);	static_cast<VHash *>(r.get_self())->hash(&method_name).for_each(keys_collector, &table);

r.write_no_lang(*new(pool) VTable(pool, &table));	r.write_no_lang(*new(pool) VTable(pool, &table));
}	}
Line 245 static void _count(Request& r, const Str	Line 308 static void _count(Request& r, const Str
Pool& pool=r.pool();	Pool& pool=r.pool();

r.write_no_lang(	r.write_no_lang(
new(pool) VInt(pool, static_cast<VHash >(r.self)->hash(&method_name).size()));	new(pool) VInt(pool, static_cast<VHash >(r.get_self())->hash(&method_name).size()));
}	}

static void _delete(Request& r, const String& method_name, MethodParams *params) {	static void _delete(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();

static_cast<VHash *>(r.self)->hash(&method_name).remove(params->as_string(0, "key must be string"));	static_cast<VHash *>(r.get_self())->hash(&method_name).remove(params->as_string(0, "key must be string"));
}	}

#ifndef DOXYGEN	#ifndef DOXYGEN
Line 272 static void one_foreach_cycle(const Hash	Line 335 static void one_foreach_cycle(const Hash
Foreach_info& i=static_cast<Foreach_info >(info);	Foreach_info& i=static_cast<Foreach_info >(info);

i.vkey->set_string(akey);	i.vkey->set_string(akey);
i.r->method_frame->put_element(*i.key_var_name, i.vkey, false);	Value& ncontext=*i.r->get_method_frame()->caller();
i.r->method_frame->put_element(i.value_var_name, static_cast<Value >(avalue), false);	ncontext.put_element(*i.key_var_name, i.vkey, false);
	ncontext.put_element(i.value_var_name, static_cast<Value >(avalue), false);
StringOrValue processed_body=i.r->process(*i.body_code);
if(i.delim_maybe_code) { // delimiter set?	StringOrValue sv_processed=i.r->process(*i.body_code);
const String *string=processed_body.get_string();	const String *s_processed=sv_processed.get_string();
if(i.need_delim && string && string->size()) // need delim & iteration produced string?	if(i.delim_maybe_code && s_processed && s_processed->size()) { // delimiter set and we have body
	if(i.need_delim) // need delim & iteration produced string?
i.r->write_pass_lang(i.r->process(*i.delim_maybe_code));	i.r->write_pass_lang(i.r->process(*i.delim_maybe_code));
i.need_delim=true;	i.need_delim=true;
}	}
i.r->write_pass_lang(processed_body);	i.r->write_pass_lang(sv_processed);
}	}
static void _foreach(Request& r, const String& method_name, MethodParams *params) {	static void _foreach(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();
Line 300 static void _foreach(Request& r, const S	Line 364 static void _foreach(Request& r, const S
new(pool) VString(pool),	new(pool) VString(pool),
false	false
};	};
VHash& self=static_cast<VHash >(r.self);	VHash& self=static_cast<VHash >(r.get_self());
Hash& hash=self.hash(&method_name);	Hash& hash=self.hash(&method_name);
VHash_lock lock(self);	VHash_lock lock(self);
hash.for_each(one_foreach_cycle, &info);	hash.for_each(one_foreach_cycle, &info);
Line 311 static void _foreach(Request& r, const S	Line 375 static void _foreach(Request& r, const S
MHash::MHash(Pool& apool) : Methoded(apool, "hash")	MHash::MHash(Pool& apool) : Methoded(apool, "hash")
{	{
// ^hash::create[[copy_from]]	// ^hash::create[[copy_from]]
add_native_method("create", Method::CT_DYNAMIC, _create_or_add, 0, 1);	add_native_method("create", Method::CT_DYNAMIC, _create, 0, 1);
// ^hash.add[add_from]	// ^hash.add[add_from]
add_native_method("add", Method::CT_DYNAMIC, _create_or_add, 1, 1);	add_native_method("add", Method::CT_DYNAMIC, _add, 1, 1);
// ^hash.sub[sub_from]	// ^hash.sub[sub_from]
add_native_method("sub", Method::CT_DYNAMIC, _sub, 1, 1);	add_native_method("sub", Method::CT_DYNAMIC, _sub, 1, 1);
// ^a.union[b] = hash	// ^a.union[b] = hash

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Removed from v.1.46
changed lines
	Added in v.1.56