--- parser3/src/classes/hash.C 2001/11/01 14:59:57 1.26 +++ parser3/src/classes/hash.C 2006/06/09 19:03:49 1.78 @@ -1,13 +1,15 @@ /** @file Parser: @b hash parser class. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: hash.C,v 1.26 2001/11/01 14:59:57 paf Exp $ + Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ +static const char * const IDENT_HASH_C="$Date: 2006/06/09 19:03:49 $"; + #include "classes.h" +#include "pa_vmethod_frame.h" + #include "pa_request.h" #include "pa_vhash.h" #include "pa_vvoid.h" @@ -16,258 +18,319 @@ #include "pa_vbool.h" #include "pa_vmethod_frame.h" -// defines - -#define HASH_CLASS_NAME "hash" - // class -class MHash : public Methoded { +class MHash: public Methoded { public: // VStateless_class - Value *create_new_value(Pool& pool) { return new(pool) VHash(pool); } + Value* create_new_value(Pool&, HashStringValue&) { return new VHash(); } public: - MHash(Pool& pool); + MHash(); public: // Methoded bool used_directly() { return true; } }; +// global variable + +DECLARE_CLASS_VAR(hash, new MHash, 0); + +// externs + +extern String cycle_data_name; + // methods #ifndef DOXYGEN -class Hash_sql_event_handlers : public SQL_Driver_query_event_handlers { +class Hash_sql_event_handlers: public SQL_Driver_query_event_handlers { + const String& statement_string; const char* statement_cstr; + bool distinct; + HashStringValue& rows_hash; + HashStringValue* row_hash; + int column_index; + ArrayString columns; + bool only_one_column; + static VBool only_one_column_value; public: - Hash_sql_event_handlers(Pool& apool, const String& amethod_name, - const String& astatement_string, const char *astatement_cstr, - Hash& arows_hash) : - pool(apool), - method_name(amethod_name), - statement_string(astatement_string), - statement_cstr(astatement_cstr), + Hash_sql_event_handlers( + const String& astatement_string, const char* astatement_cstr, + bool adistinct, + HashStringValue& arows_hash): + statement_string(astatement_string), statement_cstr(astatement_cstr), + distinct(adistinct), rows_hash(arows_hash), - columns(pool), - row_index(0) { + row_hash(0), + column_index(0), + only_one_column(false) { } - void add_column(void *ptr, size_t size) { - String *column=new(pool) String(pool); - column->APPEND_TAINTED( - (const char *)ptr, size, - statement_cstr, 0); - columns+=column; + bool add_column(SQL_Error& error, const char* str, size_t length) { + try { + columns+=new String(str, length, true); + return false; + } catch(...) { + error=SQL_Error("exception occured in Hash_sql_event_handlers::add_column"); + return true; + } } - void before_rows() { - if(columns.size()<=1) - throw Exception(0, 0, - &method_name, - "column count must be more than 1 to create a hash"); + bool before_rows(SQL_Error& error) { + if(columns.count()<1) { + error=SQL_Error("parser.runtime", "no columns"); + return true; + } + only_one_column=columns.count()==1; + + return false; } - void add_row() { + bool add_row(SQL_Error& /*error*/) { column_index=0; + return false; } - void add_row_cell(void *ptr, size_t size) { - String *cell=new(pool) String(pool); - if(size) - cell->APPEND_TAINTED( - (const char *)ptr, size, - statement_cstr, row_index++); - if(column_index==0) { - VHash *row_vhash=new(pool) VHash(pool); - row_hash=row_vhash->get_hash(0); - rows_hash.put(*cell, row_vhash); - } else - row_hash->put(*columns.get_string(column_index), new(pool) VString(*cell)); - column_index++; + bool add_row_cell(SQL_Error& error, const char *ptr, size_t length) { + try { + String& cell=*new String; + if(length) + cell.append_know_length(ptr, length, String::L_TAINTED); + bool duplicate=false; + if(only_one_column) { + duplicate=rows_hash.put_dont_replace(cell, &only_one_column_value); // put. existed? + } else if(column_index==0) { + VHash* row_vhash=new VHash; + row_hash=&row_vhash->hash(); + duplicate=rows_hash.put_dont_replace(cell, row_vhash); // put. existed? + } else + row_hash->put(*columns[column_index], new VString(cell)); + + if(duplicate & !distinct) { + error=SQL_Error("parser.runtime", "duplicate key"); + return true; + } + + column_index++; + return false; + } catch(...) { + error=SQL_Error("exception occured in Hash_sql_event_handlers::add_row_cell"); + return true; + } } -private: - Pool& pool; - const String& method_name; - const String& statement_string; const char *statement_cstr; - Hash& rows_hash; - Hash *row_hash; - int column_index; - Array columns; - int row_index; }; -#endif +VBool Hash_sql_event_handlers::only_one_column_value(true); -static void copy_all_overwrite_to(const Hash::Key& key, Hash::Val *value, void *info) { - Hash& dest=*static_cast(info); - dest.put(key, value); -} +#endif -static void _create_or_add(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - if(params->size()) { - Value& vb=params->as_no_junction(0, "param must be hash"); - if(Hash *b=vb.get_hash(&method_name)) - b->for_each(copy_all_overwrite_to, &static_cast(r.self)->hash()); +static void copy_all_overwrite_to( + HashStringValue::key_type key, + HashStringValue::value_type value, + HashStringValue* dest) { + dest->put(key, value); +} +static void _create_or_add(Request& r, MethodParams& params) { + if(params.count()) { + Value& vsrc=params.as_no_junction(0, "param must be hash"); + if(HashStringValue* src=vsrc.get_hash()) { + VHash& self=GET_SELF(r, VHash); + HashStringValue* self_hash=&(self.hash()); + if(src==self_hash) // same: doing nothing + return; + src->for_each(copy_all_overwrite_to, self_hash); + + if(VHash* vhash_src=static_cast(vsrc.as(VHASH_TYPE, false))) + { + if(Value* vdefault=vhash_src->get_default()) + { + if(vdefault->is_defined()) + { + self.set_default(vdefault); + } + } + } + } } } -static void remove_key_from(const Hash::Key& key, Hash::Val *value, void *info) { - Hash& dest=*static_cast(info); - dest.remove(key); -} - -static void _sub(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - Value& vb=params->as_no_junction(0, "param must be hash"); - if(Hash *b=vb.get_hash(&method_name)) - b->for_each(remove_key_from, &static_cast(r.self)->hash()); +static void remove_key_from( + HashStringValue::key_type key, + HashStringValue::value_type /*value*/, + HashStringValue* dest) { + dest->remove(key); +} +static void _sub(Request& r, MethodParams& params) { + Value& vsrc=params.as_no_junction(0, "param must be hash"); + if(HashStringValue* src=vsrc.get_hash()) { + HashStringValue* self=&(GET_SELF(r, VHash).hash()); + if(src==self) { // same: clearing + self->clear(); + return; + } + src->for_each(remove_key_from, self); + } } -static void copy_all_dontoverwrite_to(const Hash::Key& key, Hash::Val *value, void *info) { - Hash& dest=*static_cast(info); - dest.put_dont_replace(key, value); +static void copy_all_dontoverwrite_to( + HashStringValue::key_type key, + HashStringValue::value_type value, + HashStringValue* dest) { + dest->put_dont_replace(key, value); } - -static void _union(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - +static void _union(Request& r, MethodParams& params) { // dest = copy of self - Hash& dest=*new(pool) Hash(static_cast(r.self)->hash()); + Value& result=*new VHash(GET_SELF(r, VHash).hash()); // dest += b - Value& vb=params->as_no_junction(0, "param must be hash"); - if(Hash *b=vb.get_hash(&method_name)) - b->for_each(copy_all_dontoverwrite_to, &dest); + Value& vsrc=params.as_no_junction(0, "param must be hash"); + if(HashStringValue* src=vsrc.get_hash()) + src->for_each(copy_all_dontoverwrite_to, result.get_hash()); // return result - Value& result=*new(pool) VHash(pool, dest); - result.set_name(method_name); r.write_no_lang(result); } #ifndef DOXYGEN struct Copy_intersection_to_info { - Hash *b; - Hash *dest; + HashStringValue* b; + HashStringValue* dest; }; #endif - -static void copy_intersection_to(const Hash::Key& key, Hash::Val *value, void *info) { - Copy_intersection_to_info& i=*static_cast(info); - - if(i.b->get(key)) - i.dest->put_dont_replace(key, value); +static void copy_intersection_to( + HashStringValue::key_type key, + HashStringValue::value_type value, + Copy_intersection_to_info *info) { + if(info->b->get(key)) + info->dest->put_dont_replace(key, value); } - -static void _intersection(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - // dest = copy of self - Hash& dest=*new(pool) Hash(pool); +static void _intersection(Request& r, MethodParams& params) { + Value& result=*new VHash; // dest += b - Value& vb=params->as_no_junction(0, "param must be hash"); - if(Hash *b=vb.get_hash(&method_name)) { - Copy_intersection_to_info info={ - b, - &dest - }; - static_cast(r.self)->hash().for_each(copy_intersection_to, &info); + Value& vb=params.as_no_junction(0, "param must be hash"); + if(HashStringValue* b=vb.get_hash()) { + Copy_intersection_to_info info={b, result.get_hash()}; + GET_SELF(r, VHash).hash().for_each(copy_intersection_to, &info); } // return result - Value& result=*new(pool) VHash(pool, dest); - result.set_name(method_name); r.write_no_lang(result); } -static void *intersects(const Hash::Key& key, Hash::Val *value, void *info) { - return static_cast(info)->get(key); +static bool intersects( + HashStringValue::key_type key, + HashStringValue::value_type /*value*/, + HashStringValue* b) { + return b->get(key)!=0; } -static void _intersects(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - bool yes=false; - - // dest = copy of self - Hash& dest=*new(pool) Hash(pool); - // dest += b - Value& vb=params->as_no_junction(0, "param must be hash"); - if(Hash *b=vb.get_hash(&method_name)) - yes=static_cast(r.self)->hash().first_that(intersects, b)!=0; +static void _intersects(Request& r, MethodParams& params) { + bool result=false; + + Value& vb=params.as_no_junction(0, "param must be hash"); + if(HashStringValue* b=vb.get_hash()) + result=GET_SELF(r, VHash).hash().first_that(intersects, b)!=0; // return result - Value& result=*new(pool) VBool(pool, yes); - result.set_name(method_name); - r.write_no_lang(result); + r.write_no_lang(*new VBool(result)); } -static void _sql(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - if(!r.connection) - throw Exception(0, 0, - &method_name, - "without connect"); +extern String sql_bind_name; +extern String sql_limit_name; +extern String sql_offset_name; +extern String sql_default_name; +extern String sql_distinct_name; +extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders); +extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders); - Value& statement=params->as_junction(0, "statement must be code"); +static void _sql(Request& r, MethodParams& params) { + Value& statement=params.as_junction(0, "statement must be code"); + HashStringValue* bind=0; ulong limit=0; - if(params->size()>1) { - Value& limit_code=params->as_junction(1, "limit must be expression"); - limit=(uint)r.process(limit_code).as_double(); - } - ulong offset=0; - if(params->size()>2) { - Value& offset_code=params->as_junction(2, "offset must be expression"); - offset=(ulong)r.process(offset_code).as_double(); + bool distinct=false; + if(params.count()>1) { + Value& voptions=params.as_no_junction(1, "options must be hash, not code"); + if(voptions.is_defined() && !voptions.is_string()) + if(HashStringValue* options=voptions.get_hash()) { + int valid_options=0; + if(Value* vbind=options->get(sql_bind_name)) { + valid_options++; + bind=vbind->get_hash(); + } + if(Value* vlimit=options->get(sql_limit_name)) { + valid_options++; + limit=(ulong)r.process_to_value(*vlimit).as_double(); + } + if(Value* voffset=options->get(sql_offset_name)) { + valid_options++; + offset=(ulong)r.process_to_value(*voffset).as_double(); + } + if(Value* vdistinct=options->get(sql_distinct_name)) { + valid_options++; + distinct=r.process_to_value(*vdistinct).as_bool(); + } + if(valid_options!=options->count()) + throw Exception("parser.runtime", + 0, + "called with invalid option"); + } else + throw Exception("parser.runtime", + 0, + "options must be hash"); } - Temp_lang temp_lang(r, String::UL_SQL); - const String& statement_string=r.process(statement).as_string(); - const char *statement_cstr= - statement_string.cstr(String::UL_UNSPECIFIED, r.connection); - Hash& hash=static_cast(r.self)->hash(); + SQL_Driver::Placeholder* placeholders=0; + uint placeholders_count=0; + if(bind) + placeholders_count=marshal_binds(*bind, placeholders); + + Temp_lang temp_lang(r, String::L_SQL); + const String& statement_string=r.process_to_string(statement); + const char* statement_cstr= + statement_string.cstr(String::L_UNSPECIFIED, r.connection()); + HashStringValue& hash=GET_SELF(r, VHash).hash(); hash.clear(); - Hash_sql_event_handlers handlers(pool, method_name, - statement_string, statement_cstr, hash); + Hash_sql_event_handlers handlers( + statement_string, statement_cstr, + distinct, + hash); + r.connection()->query( + statement_cstr, + placeholders_count, placeholders, + offset, limit, + handlers, + statement_string); - r.connection->query( - statement_cstr, offset, limit, - handlers); + if(bind) + unmarshal_bind_updates(*bind, placeholders_count, placeholders); } -static void keys_collector(const Hash::Key& key, Hash::Val *value, void *info) { - Table& table=*static_cast(info); - Pool& pool=table.pool(); - - Array& row=*new(pool) Array(pool); - row+=&key; - table+=&row; +static void keys_collector( + HashStringValue::key_type key, + HashStringValue::value_type, + Table *table) { + Table::element_type row(new ArrayString); + *row+=new String(key, String::L_TAINTED); + *table+=row; } -static void _keys(Request& r, const String& method_name, MethodParams *) { - Pool& pool=r.pool(); +static void _keys(Request& r, MethodParams& params) { + const String* keys_column_name; + if(params.count()>0) + keys_column_name=¶ms.as_string(0, "column name must be string"); + else + keys_column_name=new String("key"); - Array& columns=*new(pool) Array(pool); - columns+=new(pool) String(pool, "key"); - Table& table=*new(pool) Table(pool, &method_name, &columns); + Table::columns_type columns(new ArrayString); + *columns+=keys_column_name; + Table* table=new Table(columns); - static_cast(r.self)->hash().for_each(keys_collector, &table); + GET_SELF(r, VHash).hash().for_each(keys_collector, table); - VTable& result=*new(pool) VTable(pool, &table); - result.set_name(method_name); - r.write_no_lang(result); + r.write_no_lang(*new VTable(table)); } -static void _count(Request& r, const String& method_name, MethodParams *) { - Pool& pool=r.pool(); - - Value& result=*new(pool) VInt(pool, static_cast(r.self)->hash().size()); - result.set_name(method_name); - r.write_no_lang(result); +static void _count(Request& r, MethodParams&) { + r.write_no_lang(*new VInt(GET_SELF(r, VHash).hash().count())); } -static void _delete(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); +static void _delete(Request& r, MethodParams& params) { - static_cast(r.self)->hash().remove(params->as_string(0, "key must be string")); + GET_SELF(r, VHash).hash().remove(params.as_string(0, "key must be string")); } #ifndef DOXYGEN @@ -275,57 +338,58 @@ struct Foreach_info { Request *r; const String* key_var_name; const String* value_var_name; - Value *body_code; - Value *delim_maybe_code; + Value* body_code; + Value* delim_maybe_code; - Value *var_context; - VString *vkey; + VString* vkey; bool need_delim; }; #endif - -static void one_foreach_cycle(const Hash::Key& akey, Hash::Val *avalue, - void *info) { - Foreach_info& i=*static_cast(info); - - i.vkey->set_string(akey); - i.var_context->put_element(*i.key_var_name, i.vkey); - i.var_context->put_element(*i.value_var_name, static_cast(avalue)); - - Value& processed_body=i.r->process(*i.body_code); - if(i.delim_maybe_code) { // delimiter set? - const String *string=processed_body.get_string(); - if(i.need_delim && string && string->size()) // need delim & iteration produced string? - i.r->write_pass_lang(i.r->process(*i.delim_maybe_code)); - i.need_delim=true; +static bool one_foreach_cycle( + HashStringValue::key_type akey, + HashStringValue::value_type avalue, + Foreach_info *info) { + info->vkey->set_string(*new String(akey, String::L_TAINTED)); + Value& ncontext=*info->r->get_method_frame()->caller(); + ncontext.put_element(ncontext, *info->key_var_name, info->vkey, false); + ncontext.put_element(ncontext, *info->value_var_name, avalue, false); + + StringOrValue sv_processed=info->r->process(*info->body_code); + Request::Skip lskip=info->r->get_skip(); info->r->set_skip(Request::SKIP_NOTHING); + const String* s_processed=sv_processed.get_string(); + if(info->delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body + if(info->need_delim) // need delim & iteration produced string? + info->r->write_pass_lang(info->r->process(*info->delim_maybe_code)); + info->need_delim=true; } - i.r->write_pass_lang(processed_body); + info->r->write_pass_lang(sv_processed); + + return lskip==Request::SKIP_BREAK; } -static void _foreach(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - const String& key_var_name=params->as_string(0, "key-var name must be string"); - const String& value_var_name=params->as_string(1, "value-var name must be string"); - Value& body_code=params->as_junction(2, "body must be code"); - Value *delim_maybe_code=params->size()>3?¶ms->get(3):0; +static void _foreach(Request& r, MethodParams& params) { + Temp_hash_value + cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r); Foreach_info info={ &r, - &key_var_name, &value_var_name, - &body_code, - delim_maybe_code, - - body_code.get_junction()->wcontext, - new(pool) VString(pool), + ¶ms.as_string(0, "key-var name must be string"), + ¶ms.as_string(1, "value-var name must be string"), + ¶ms.as_junction(2, "body must be code"), + params.count()>3?params.get(3):0, + /*vkey=*/new VString, false }; - static_cast(r.self)->hash().for_each(one_foreach_cycle, &info); + + VHash& self=GET_SELF(r, VHash); + HashStringValue& hash=self.hash(); + VHash_lock lock(self); + hash.first_that(one_foreach_cycle, &info); } // constructor -MHash::MHash(Pool& apool) : Methoded(apool) { - set_name(*NEW String(pool(), HASH_CLASS_NAME)); - +MHash::MHash(): Methoded("hash") +{ // ^hash::create[[copy_from]] add_native_method("create", Method::CT_DYNAMIC, _create_or_add, 0, 1); // ^hash.add[add_from] @@ -342,28 +406,15 @@ MHash::MHash(Pool& apool) : Methoded(apo // ^a.delete[key] add_native_method("delete", Method::CT_DYNAMIC, _delete, 1, 1); - // ^hash:sql[query][(count[;offset])] - add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 3); + // ^hash:sql[query][options hash] + add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2); - // ^hash._keys[] - add_native_method("_keys", Method::CT_DYNAMIC, _keys, 0, 0); + // ^hash._keys[[column name]] + add_native_method("_keys", Method::CT_DYNAMIC, _keys, 0, 1); // ^hash._count[] add_native_method("_count", Method::CT_DYNAMIC, _count, 0, 0); // ^hash.foreach[key;value]{code}[delim] - Array *for_each_locals=NEW Array(pool(), 2); - *for_each_locals += NEW String(pool(), "key"); - add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 2+1, 2+1+1); } - -// global variable - -Methoded *hash_base_class; - -// creator - -Methoded *MHash_create(Pool& pool) { - return hash_base_class=new(pool) MHash(pool); -}