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| version 1.105, 2010/08/04 15:11:44 | version 1.147, 2020/12/29 13:56:18 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b hash parser class. | Parser: @b hash parser class. |
| Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| static const char * const IDENT_HASH_C="$Date$"; | |
| #include "classes.h" | #include "classes.h" |
| #include "pa_vmethod_frame.h" | #include "pa_vmethod_frame.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_charsets.h" | |
| #include "pa_vhash.h" | #include "pa_vhash.h" |
| #include "pa_vvoid.h" | #include "pa_vvoid.h" |
| #include "pa_sql_connection.h" | #include "pa_sql_connection.h" |
| Line 18 static const char * const IDENT_HASH_C=" | Line 17 static const char * const IDENT_HASH_C=" |
| #include "pa_vbool.h" | #include "pa_vbool.h" |
| #include "pa_vmethod_frame.h" | #include "pa_vmethod_frame.h" |
| volatile const char * IDENT_HASH_C="$Id$"; | |
| // class | // class |
| class MHash: public Methoded { | class MHash: public Methoded { |
| Line 26 public: // VStateless_class | Line 27 public: // VStateless_class |
| public: | public: |
| MHash(); | MHash(); |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | }; |
| // global variable | // global variable |
| DECLARE_CLASS_VAR(hash, new MHash, 0); | DECLARE_CLASS_VAR(hash, new MHash); |
| // 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 { |
| const String& statement_string; const char* statement_cstr; | |
| bool distinct; | bool distinct; |
| HashStringValue& rows_hash; | HashStringValue& rows_hash; |
| Value* row_value; | Value* row_value; |
| Line 51 class Hash_sql_event_handlers: public SQ | Line 49 class Hash_sql_event_handlers: public SQ |
| public: | public: |
| Table* empty; | Table* empty; |
| public: | public: |
| Hash_sql_event_handlers( | Hash_sql_event_handlers(bool adistinct, HashStringValue& arows_hash, Table2hash_value_type avalue_type): |
| const String& astatement_string, | |
| const char* astatement_cstr, | |
| bool adistinct, | |
| HashStringValue& arows_hash, | |
| Table2hash_value_type avalue_type) | |
| : | |
| statement_string(astatement_string), | |
| statement_cstr(astatement_cstr), | |
| distinct(adistinct), | distinct(adistinct), |
| rows_hash(arows_hash), | rows_hash(arows_hash), |
| value_type(avalue_type), | |
| row_value(0), | row_value(0), |
| column_index(0), | column_index(0), |
| one_bool_column(false), | |
| columns(*new ArrayString), | columns(*new ArrayString), |
| one_bool_column(false), | |
| value_type(avalue_type), | |
| empty(0) { | empty(0) { |
| } | } |
| bool add_column(SQL_Error& error, const char* str, size_t length) { | bool add_column(SQL_Error& error, const char* str, size_t ) { |
| try { | try { |
| columns+=new String(str, String::L_TAINTED, length); | columns+=new String(str, String::L_TAINTED /* no length as 0x00 can be inside */); |
| return false; | return false; |
| } catch(...) { | } catch(...) { |
| error=SQL_Error("exception occured in Hash_sql_event_handlers::add_column"); | error=SQL_Error("exception occurred in Hash_sql_event_handlers::add_column"); |
| return true; | return true; |
| } | } |
| } | } |
| bool before_rows(SQL_Error& error) { | bool before_rows(SQL_Error& error) { |
| if(columns.count()<1) { | if(columns.count()<1) { |
| error=SQL_Error(PARSER_RUNTIME, "no columns"); | error=SQL_Error("no columns"); |
| return true; | return true; |
| } | } |
| switch(value_type){ | switch(value_type){ |
| case C_STRING: { | case C_STRING: { |
| if(columns.count()>2){ | if(columns.count()>2){ |
| error=SQL_Error(PARSER_RUNTIME, "only 2 columns allowed for $.type[string]."); | error=SQL_Error("only 2 columns allowed for $.type[string]."); |
| return true; | return true; |
| } | } |
| } | } |
| Line 109 public: | Line 99 public: |
| return false; | return false; |
| } | } |
| bool add_row_cell(SQL_Error& error, const char *ptr, size_t length) { | bool add_row_cell(SQL_Error& error, const char *str, size_t ) { |
| try { | try { |
| String& cell=*new String(ptr, String::L_TAINTED, length); | const String& cell=str ? *new String(str, String::L_TAINTED /* no length as 0x00 can be inside */) : String::Empty; |
| bool duplicate=false; | bool duplicate=false; |
| if(one_bool_column) { | if(one_bool_column) { |
| Line 174 public: | Line 164 public: |
| } | } |
| if(duplicate & !distinct) { | if(duplicate & !distinct) { |
| error=SQL_Error(PARSER_RUNTIME, "duplicate key"); | error=SQL_Error("duplicate key"); |
| return true; | return true; |
| } | } |
| column_index++; | column_index++; |
| return false; | return false; |
| } catch(...) { | } catch(...) { |
| error=SQL_Error("exception occured in Hash_sql_event_handlers::add_row_cell"); | error=SQL_Error("exception occurred in Hash_sql_event_handlers::add_row_cell"); |
| return true; | return true; |
| } | } |
| } | } |
| Line 193 VBool Hash_sql_event_handlers::only_one_ | Line 183 VBool Hash_sql_event_handlers::only_one_ |
| static void _create_or_add(Request& r, MethodParams& params) { | static void _create_or_add(Request& r, MethodParams& params) { |
| if(params.count()) { | if(params.count()) { |
| Value& vsrc=params.as_no_junction(0, "param must be hash"); | Value& vsrc=params.as_no_junction(0, PARAM_MUST_BE_HASH); |
| if(HashStringValue* src=vsrc.get_hash()) { | VHashBase& self=GET_SELF(r, VHashBase); |
| VHash& self=GET_SELF(r, VHash); | HashStringValue* self_hash=&(self.hash()); |
| HashStringValue* self_hash=&(self.hash()); | HashStringValue* src_hash; |
| if(src==self_hash) // same: doing nothing | |
| if(VHashBase* src=static_cast<VHashBase*>(vsrc.as(VHASH_TYPE))) { | |
| src_hash=&(src->hash()); | |
| if(src_hash==self_hash) // same: doing nothing | |
| return; | return; |
| src->for_each<HashStringValue*>(copy_all_overwrite_to, self_hash); | |
| if(VHash* vhash_src=static_cast<VHash*>(vsrc.as(VHASH_TYPE))) | if(Value* vdefault=src->get_default()) |
| { | self.set_default(vdefault); |
| if(Value* vdefault=vhash_src->get_default()) | } else { |
| { | src_hash=vsrc.get_hash(); |
| if(vdefault->is_defined()) | |
| { | |
| self.set_default(vdefault); | |
| } | |
| } | |
| } | |
| } | } |
| if(src_hash) | |
| for(HashStringValue::Iterator i(*src_hash); i; i.next()) | |
| self_hash->put(i.key(), i.value()); | |
| } | } |
| } | } |
| static void _sub(Request& r, MethodParams& params) { | static void _sub(Request& r, MethodParams& params) { |
| Value& vsrc=params.as_no_junction(0, "param must be hash"); | if(HashStringValue* src=params.as_hash(0, "param")) { |
| if(HashStringValue* src=vsrc.get_hash()) { | HashStringValue* self=&(GET_SELF(r, VHashBase).hash()); |
| HashStringValue* self=&(GET_SELF(r, VHash).hash()); | |
| if(src==self) { // same: clearing | if(src==self) { // same: clearing |
| self->clear(); | self->clear(); |
| return; | return; |
| } | } |
| src->for_each<HashStringValue*>(remove_key_from, self); | for(HashStringValue::Iterator i(*src); i; i.next()) |
| self->remove(i.key()); | |
| } | } |
| } | } |
| static void copy_all_dontoverwrite_to( | static void copy_all_dontoverwrite_to(HashStringValue::key_type key, HashStringValue::value_type value, HashStringValue* dest) { |
| HashStringValue::key_type key, | |
| HashStringValue::value_type value, | |
| HashStringValue* dest) { | |
| dest->put_dont_replace(key, value); | dest->put_dont_replace(key, value); |
| } | } |
| static void _union(Request& r, MethodParams& params) { | static void _union(Request& r, MethodParams& params) { |
| // dest = copy of self | // dest = copy of self |
| Value& result=*new VHash(GET_SELF(r, VHash).hash()); | Value& result=*new VHash(GET_SELF(r, VHashBase).hash()); |
| // dest += b | // dest += b |
| Value& vsrc=params.as_no_junction(0, "param must be hash"); | if(HashStringValue* src=params.as_hash(0, "param")) |
| if(HashStringValue* src=vsrc.get_hash()) | |
| src->for_each<HashStringValue*>(copy_all_dontoverwrite_to, result.get_hash()); | src->for_each<HashStringValue*>(copy_all_dontoverwrite_to, result.get_hash()); |
| // return result | // return result |
| r.write_no_lang(result); | r.write(result); |
| } | } |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| Line 251 struct Copy_intersection_to_info { | Line 238 struct Copy_intersection_to_info { |
| HashStringValue* dest; | HashStringValue* dest; |
| }; | }; |
| #endif | #endif |
| static void copy_intersection_to( | static void copy_intersection_to(HashStringValue::key_type key, HashStringValue::value_type value, Copy_intersection_to_info *info) { |
| HashStringValue::key_type key, | |
| HashStringValue::value_type value, | |
| Copy_intersection_to_info *info) { | |
| if(info->b->get(key)) | if(info->b->get(key)) |
| info->dest->put_dont_replace(key, value); | info->dest->put_dont_replace(key, value); |
| } | } |
| static void _intersection(Request& r, MethodParams& params) { | static void _intersection(Request& r, MethodParams& params) { |
| Value& result=*new VHash; | Value& result=*new VHash; |
| // dest += b | // dest += b |
| Value& vb=params.as_no_junction(0, "param must be hash"); | if(HashStringValue* b=params.as_hash(0, "param")) { |
| if(HashStringValue* b=vb.get_hash()) { | |
| Copy_intersection_to_info info={b, result.get_hash()}; | Copy_intersection_to_info info={b, result.get_hash()}; |
| GET_SELF(r, VHash).hash().for_each<Copy_intersection_to_info*>(copy_intersection_to, &info); | GET_SELF(r, VHashBase).hash().for_each<Copy_intersection_to_info*>(copy_intersection_to, &info); |
| } | } |
| // return result | // return result |
| r.write_no_lang(result); | r.write(result); |
| } | } |
| static bool intersects( | static bool intersects( HashStringValue::key_type key, HashStringValue::value_type /*value*/, HashStringValue* b) { |
| HashStringValue::key_type key, | |
| HashStringValue::value_type /*value*/, | |
| HashStringValue* b) { | |
| return b->get(key)!=0; | return b->get(key)!=0; |
| } | } |
| static void _intersects(Request& r, MethodParams& params) { | static void _intersects(Request& r, MethodParams& params) { |
| bool result=false; | bool result=false; |
| Value& vb=params.as_no_junction(0, "param must be hash"); | if(HashStringValue* b=params.as_hash(0, "param")) { |
| if(HashStringValue* b=vb.get_hash()) | HashStringValue* self=&(GET_SELF(r, VHashBase).hash()); |
| result=GET_SELF(r, VHash).hash().first_that<HashStringValue*>(intersects, b)!=0; | if(b==self) { |
| r.write(VBool::get(true)); | |
| return; | |
| } | |
| result=self->first_that<HashStringValue*>(intersects, b)!=0; | |
| } | |
| // return result | // return result |
| r.write_no_lang(VBool::get(result)); | r.write(VBool::get(result)); |
| } | } |
| 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 String sql_value_type_name; | |
| extern Table2hash_value_type get_value_type(Value& vvalue_type); | extern Table2hash_value_type get_value_type(Value& vvalue_type); |
| extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders); | extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders); |
| extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders); | extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders); |
| Line 308 static void _sql(Request& r, MethodParam | Line 287 static void _sql(Request& r, MethodParam |
| ulong offset=0; | ulong offset=0; |
| bool distinct=false; | bool distinct=false; |
| Table2hash_value_type value_type=C_HASH; | Table2hash_value_type value_type=C_HASH; |
| if(params.count()>1) { | if(params.count()>1) |
| Value& voptions=params.as_no_junction(1, "options must be hash, not code"); | if(HashStringValue* options=params.as_hash(1, "sql options")) { |
| if(voptions.is_defined() && !voptions.is_string()) | int valid_options=0; |
| if(HashStringValue* options=voptions.get_hash()) { | if(Value* vbind=options->get(sql_bind_name)) { |
| int valid_options=0; | valid_options++; |
| if(Value* vbind=options->get(sql_bind_name)) { | bind=vbind->get_hash(); |
| valid_options++; | } |
| bind=vbind->get_hash(); | if(Value* vlimit=options->get(sql_limit_name)) { |
| } | valid_options++; |
| if(Value* vlimit=options->get(sql_limit_name)) { | limit=(ulong)r.process(*vlimit).as_double(); |
| valid_options++; | } |
| limit=(ulong)r.process_to_value(*vlimit).as_double(); | if(Value* voffset=options->get(sql_offset_name)) { |
| } | valid_options++; |
| if(Value* voffset=options->get(sql_offset_name)) { | offset=(ulong)r.process(*voffset).as_double(); |
| valid_options++; | } |
| offset=(ulong)r.process_to_value(*voffset).as_double(); | if(Value* vdistinct=options->get(sql_distinct_name)) { |
| } | valid_options++; |
| if(Value* vdistinct=options->get(sql_distinct_name)) { | distinct=r.process(*vdistinct).as_bool(); |
| valid_options++; | } |
| distinct=r.process_to_value(*vdistinct).as_bool(); | if(Value* vvalue_type=options->get(sql_value_type_name)) { |
| } | valid_options++; |
| if(Value* vvalue_type=options->get(sql_value_type_name)) { | value_type=get_value_type(r.process(*vvalue_type)); |
| valid_options++; | } |
| value_type=get_value_type(r.process_to_value(*vvalue_type)); | if(valid_options!=options->count()) |
| } | throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); |
| if(valid_options!=options->count()) | } |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | |
| } else | |
| throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH); | |
| } | |
| SQL_Driver::Placeholder* placeholders=0; | SQL_Driver::Placeholder* placeholders=0; |
| uint placeholders_count=0; | uint placeholders_count=0; |
| if(bind) | if(bind) |
| placeholders_count=marshal_binds(*bind, placeholders); | placeholders_count=marshal_binds(*bind, placeholders); |
| Temp_lang temp_lang(r, String::L_SQL); | |
| const String& statement_string=r.process_to_string(statement); | const String& statement_string=r.process_to_string(statement); |
| const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection()); | const char* statement_cstr=statement_string.untaint_cstr(String::L_SQL, r.connection()); |
| HashStringValue& hash=GET_SELF(r, VHashBase).hash(); | |
| hash.clear(); | |
| Hash_sql_event_handlers handlers(distinct, hash, value_type); | |
| HashStringValue& hash=GET_SELF(r, VHash).hash(); | r.connection()->query(statement_cstr, placeholders_count, placeholders, offset, limit, handlers, statement_string); |
| hash.clear(); | |
| Hash_sql_event_handlers handlers( | |
| statement_string, statement_cstr, | |
| distinct, | |
| hash, | |
| value_type); | |
| r.connection()->query( | |
| statement_cstr, | |
| placeholders_count, placeholders, | |
| offset, limit, | |
| handlers, | |
| statement_string); | |
| if(bind) | if(bind) |
| unmarshal_bind_updates(*bind, placeholders_count, placeholders); | unmarshal_bind_updates(*bind, placeholders_count, placeholders); |
| } | } |
| static void keys_collector( | static void keys_collector(HashStringValue::key_type key, HashStringValue::value_type, Table *table) { |
| HashStringValue::key_type key, | |
| HashStringValue::value_type, | |
| Table *table) { | |
| Table::element_type row(new ArrayString(1)); | Table::element_type row(new ArrayString(1)); |
| *row+=new String(key, String::L_TAINTED); | *row+=new String(key, String::L_TAINTED); |
| *table+=row; | *table+=row; |
| Line 386 static void _keys(Request& r, MethodPara | Line 348 static void _keys(Request& r, MethodPara |
| *columns+=keys_column_name; | *columns+=keys_column_name; |
| Table* table=new Table(columns); | Table* table=new Table(columns); |
| GET_SELF(r, VHash).hash().for_each<Table*>(keys_collector, table); | GET_SELF(r, VHashBase).hash().for_each<Table*>(keys_collector, table); |
| r.write_no_lang(*new VTable(table)); | r.write(*new VTable(table)); |
| } | } |
| static void _count(Request& r, MethodParams&) { | static void _count(Request& r, MethodParams&) { |
| r.write_no_lang(*new VInt(GET_SELF(r, VHash).hash().count())); | r.write(*new VInt(GET_SELF(r, VHashBase).hash().count())); |
| } | } |
| static void _delete(Request& r, MethodParams& params) { | static void _delete(Request& r, MethodParams& params) { |
| if(params.count()>0) | |
| GET_SELF(r, VHash).hash().remove(params.as_string(0, "key must be string")); | GET_SELF(r, VHashBase).hash().remove(params.as_string(0, "key must be string")); |
| else | |
| GET_SELF(r, VHashBase).hash().clear(); | |
| } | } |
| static void _contains(Request& r, MethodParams& params) { | static void _contains(Request& r, MethodParams& params) { |
| bool result=GET_SELF(r, VHash).hash().contains(params.as_string(0, "key must be string")); | VHashBase& self=GET_SELF(r, VHashBase); |
| r.write_no_lang(VBool::get(result)); | const String& key_name=params.as_string(0, "key must be string"); |
| bool result=SYMBOLS_EQ(key_name,_DEFAULT_SYMBOL) ? (self.get_default() != 0) : self.hash().contains(key_name); | |
| r.write(VBool::get(result)); | |
| } | } |
| #ifndef DOXYGEN | static void _foreach(Request& r, MethodParams& params) { |
| struct Foreach_info { | InCycle temp(r); |
| Request *r; | |
| const String* key_var_name; | |
| const String* value_var_name; | |
| Value* body_code; | |
| Value* delim_maybe_code; | |
| Value* var_context; | const String* key_var_name=¶ms.as_string(0, "key-var name must be string"); |
| bool need_delim; | const String* value_var_name=¶ms.as_string(1, "value-var name must be string"); |
| }; | Value* body_code=¶ms.as_junction(2, "body must be code"); |
| #endif | Value* delim_maybe_code=params.count()>3?¶ms[3]:0; |
| static bool one_foreach_cycle( | Value& caller=*r.get_method_frame()->caller(); |
| HashStringValue::key_type akey, | |
| HashStringValue::value_type avalue, | if(key_var_name->is_empty()) key_var_name=0; |
| Foreach_info *info) { | if(value_var_name->is_empty()) value_var_name=0; |
| Value& var_context=*info->var_context; | |
| if(info->key_var_name){ | HashStringValue& hash=GET_SELF(r, VHashBase).hash(); |
| VString* vkey=new VString(*new String(akey, String::L_TAINTED)); | |
| var_context.put_element(*info->key_var_name, vkey, false); | if(delim_maybe_code){ // delimiter set |
| } | bool need_delim=false;; |
| if(info->value_var_name) | for(HashStringValue::Iterator i(hash); i; i.next()){ |
| var_context.put_element(*info->value_var_name, avalue, false); | if(key_var_name){ |
| VString* vkey=new VString(*new String(i.key(), String::L_TAINTED)); | |
| if(info->delim_maybe_code){ // delimiter set | r.put_element(caller, *key_var_name, vkey); |
| StringOrValue sv_processed=info->r->process(*info->body_code); | } |
| Request::Skip lskip=info->r->get_skip(); info->r->set_skip(Request::SKIP_NOTHING); | |
| if(value_var_name) | |
| const String* s_processed=sv_processed.get_string(); | r.put_element(caller, *value_var_name, i.value()); |
| if(s_processed && !s_processed->is_empty()) { // we have body | |
| if(info->need_delim) // need delim & iteration produced string? | Value& sv_processed=r.process(*body_code); |
| info->r->write_pass_lang(info->r->process(*info->delim_maybe_code)); | TempSkip4Delimiter skip(r); |
| else | |
| info->need_delim=true; | const String* s_processed=sv_processed.get_string(); |
| if(s_processed && !s_processed->is_empty()) { // we have body | |
| if(need_delim) // need delim & iteration produced string? | |
| r.write(r.process(*delim_maybe_code)); | |
| else | |
| need_delim=true; | |
| } | |
| r.write(sv_processed); | |
| if(skip.check_break()) | |
| break; | |
| } | } |
| info->r->write_pass_lang(sv_processed); | |
| return lskip==Request::SKIP_BREAK; | |
| } else { | } else { |
| info->r->process_write(*info->body_code); | for(HashStringValue::Iterator i(hash); i; i.next()){ |
| Request::Skip lskip=info->r->get_skip(); info->r->set_skip(Request::SKIP_NOTHING); | if(key_var_name){ |
| return lskip==Request::SKIP_BREAK; | VString* vkey=new VString(*new String(i.key(), String::L_TAINTED)); |
| r.put_element(caller, *key_var_name, vkey); | |
| } | |
| if(value_var_name) | |
| r.put_element(caller, *value_var_name, i.value()); | |
| r.process_write(*body_code); | |
| if(r.check_skip_break()) | |
| break; | |
| } | |
| } | } |
| } | } |
| static void _foreach(Request& r, MethodParams& params) { | |
| InCycle temp(r); | |
| enum AtResultType { | |
| AtResultTypeValue = 0, | |
| AtResultTypeKey = 1, | |
| AtResultTypeHash = 2 | |
| }; | |
| inline Value& SingleElementHash(String::Body akey, Value* avalue) { | |
| Value& result=*new VHash; | |
| result.put_element(*new String(akey, String::L_TAINTED), avalue); | |
| return result; | |
| } | |
| #ifndef DOXYGEN | |
| struct Hash_seq_item : public PA_Allocated { | |
| HashStringValue::Pair *hash_pair; | |
| union { | |
| const char *c_str; | |
| double d; | |
| } value; | |
| }; | |
| #endif | |
| static int sort_cmp_string(const void *a, const void *b) { | |
| return strcmp( | |
| static_cast<const Hash_seq_item *>(a)->value.c_str, | |
| static_cast<const Hash_seq_item *>(b)->value.c_str | |
| ); | |
| } | |
| static int sort_cmp_double(const void *a, const void *b) { | |
| double va=static_cast<const Hash_seq_item *>(a)->value.d; | |
| double vb=static_cast<const Hash_seq_item *>(b)->value.d; | |
| if(va<vb) | |
| return -1; | |
| else if(va>vb) | |
| return +1; | |
| else | |
| return 0; | |
| } | |
| static void _sort(Request& r, MethodParams& params){ | |
| #ifdef HASH_ORDER | |
| const String& key_var_name=params.as_string(0, "key-var name must be string"); | 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"); | const String& value_var_name=params.as_string(1, "value-var name must be string"); |
| Value& key_maker=params.as_junction(2, "key-maker must be code"); | |
| bool reverse=params.count()>3 /*..[desc|asc|]*/ && params.as_no_junction(3, "order must not be code").as_string()=="desc"; // default=asc | |
| Foreach_info info={ | const String* key_var=key_var_name.is_empty()? 0 : &key_var_name; |
| &r, | const String* value_var=value_var_name.is_empty()? 0 : &value_var_name; |
| key_var_name.is_empty()? 0 : &key_var_name, | VMethodFrame* context=r.get_method_frame()->caller(); |
| value_var_name.is_empty()? 0 : &value_var_name, | |
| ¶ms.as_junction(2, "body must be code"), | HashStringValue& hash=GET_SELF(r, VHashBase).hash(); |
| /*delimiter*/params.count()>3?params.get(3):0, | int count=hash.count(); |
| /*var_context*/r.get_method_frame()->caller(), | |
| false | Hash_seq_item* seq=new Hash_seq_item[count]; |
| }; | int pos=0; |
| bool key_values_are_strings=true; | |
| VHash& self=GET_SELF(r, VHash); | |
| HashStringValue& hash=self.hash(); | for(HashStringValue::Iterator i(hash); i; i.next(), pos++ ){ |
| VHash_lock lock(self); | if(key_var) |
| hash.first_that<Foreach_info*>(one_foreach_cycle, &info); | r.put_element(*context, *key_var, new VString(*new String(i.key(), String::L_TAINTED))); |
| if(value_var) | |
| r.put_element(*context, *value_var, i.value()); | |
| Value& value=r.process(key_maker); | |
| if(pos==0) // determining key values type by first one | |
| key_values_are_strings=value.is_string(); | |
| seq[pos].hash_pair=i.pair(); | |
| if(key_values_are_strings) | |
| seq[pos].value.c_str=value.as_string().cstr(); | |
| else | |
| seq[pos].value.d=value.as_expr_result().as_double(); | |
| } | |
| // @todo: handle this elsewhere | |
| if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) | |
| for(pos=0; pos<count; pos++) | |
| if(*seq[pos].value.c_str) | |
| seq[pos].value.c_str=Charset::transcode(seq[pos].value.c_str, r.charsets.source(), pa_UTF8_charset).cstr(); | |
| // sort keys | |
| qsort(seq, count, sizeof(Hash_seq_item), key_values_are_strings?sort_cmp_string:sort_cmp_double); | |
| // reorder hash as required in 'seq' | |
| hash.order_clear(); | |
| if(reverse) | |
| for(pos=count-1; pos>=0; pos--) | |
| hash.order_next(seq[pos].hash_pair); | |
| else | |
| for(pos=0; pos<count; pos++) | |
| hash.order_next(seq[pos].hash_pair); | |
| delete[] seq; | |
| #endif | |
| } | } |
| static void _at(Request& r, MethodParams& params) { | static void _at(Request& r, MethodParams& params) { |
| HashStringValue& hash=GET_SELF(r, VHash).hash(); | HashStringValue& hash=GET_SELF(r, VHashBase).hash(); |
| size_t count=hash.count(); | size_t count=hash.count(); |
| int pos=0; | int pos=0; |
| Value& vwhence=*params.get(0); | // misha@ |
| if(vwhence.is_string()){ | // I do not like that type is checked before whence. |
| // But I do not like the idea to move it after whence (where process can be called) even more. | |
| AtResultType result_type=AtResultTypeValue; | |
| if(params.count() > 1) { | |
| const String& stype=params.as_string(1, "type must be string"); | |
| if(stype == "key") | |
| result_type=AtResultTypeKey; | |
| else if(stype == "hash") | |
| result_type=AtResultTypeHash; | |
| else if(stype != "value") | |
| throw Exception(PARSER_RUNTIME, &stype, "type must be 'key', 'value' or 'hash'"); | |
| } | |
| Value& vwhence=params[0]; | |
| if(vwhence.is_string()) { | |
| const String& swhence=*vwhence.get_string(); | const String& swhence=*vwhence.get_string(); |
| if(swhence == "last") | if(swhence == "last") |
| pos=count-1; | pos=count-1; |
| Line 486 static void _at(Request& r, MethodParams | Line 554 static void _at(Request& r, MethodParams |
| &swhence, | &swhence, |
| "whence must be 'first', 'last' or expression"); | "whence must be 'first', 'last' or expression"); |
| } else { | } else { |
| pos=r.process_to_value(vwhence).as_int(); | pos=r.process(vwhence).as_int(); |
| if(pos < 0) | if(pos < 0) |
| pos+=count; | pos+=count; |
| } | } |
| if(count && pos >= 0 && pos < count){ | if(count && pos >= 0 && (size_t)pos < count){ |
| if(pos == 0) | switch(result_type) { |
| r.write_assign_lang(*hash.first_value()); | case AtResultTypeKey: |
| else if(pos == count-1) | { |
| r.write_assign_lang(*hash.last_value()); | #ifdef HASH_ORDER |
| else | if(pos == 0) { |
| for(HashStringValue::Iterator i(hash); i; i.next(), pos-- ) | r.write(*new VString(*new String(hash.first_key(), String::L_TAINTED))); |
| if(!pos){ | } else if((size_t)pos == count-1) { |
| r.write_assign_lang(*i.value()); | r.write(*new VString(*new String(hash.last_key(), String::L_TAINTED))); |
| } else | |
| #endif | |
| { | |
| for(HashStringValue::Iterator i(hash); i; i.next(), pos-- ) | |
| if(!pos){ | |
| r.write(*new VString(*new String(i.key(), String::L_TAINTED))); | |
| break; | |
| } | |
| } | |
| break; | |
| } | |
| case AtResultTypeValue: | |
| { | |
| #ifdef HASH_ORDER | |
| if(pos == 0) { | |
| r.write(*hash.first_value()); | |
| } else if((size_t)pos == count-1) { | |
| r.write(*hash.last_value()); | |
| } else | |
| #endif | |
| { | |
| for(HashStringValue::Iterator i(hash); i; i.next(), pos-- ) | |
| if(!pos){ | |
| r.write(*i.value()); | |
| break; | |
| } | |
| } | |
| break; | |
| } | |
| case AtResultTypeHash: | |
| { | |
| #ifdef HASH_ORDER | |
| if(pos == 0) { | |
| r.write(SingleElementHash(hash.first_key(), hash.first_value())); | |
| } else if((size_t)pos == count-1) { | |
| r.write(SingleElementHash(hash.last_key(), hash.last_value())); | |
| } else | |
| #endif | |
| { | |
| for(HashStringValue::Iterator i(hash); i; i.next(), pos-- ) | |
| if(!pos){ | |
| r.write(SingleElementHash(i.key(), i.value())); | |
| break; | |
| } | |
| } | |
| break; | break; |
| } | } |
| } | |
| } | } |
| } | |
| extern String table_reverse_name; | |
| static void _select(Request& r, MethodParams& params) { | |
| const String* key_var_name=¶ms.as_string(0, "key-var name must be string"); | |
| const String* value_var_name=¶ms.as_string(1, "value-var name must be string"); | |
| Value& vcondition=params.as_expression(2, "condition must be number, bool or expression"); | |
| if(key_var_name->is_empty()) key_var_name=0; | |
| if(value_var_name->is_empty()) value_var_name=0; | |
| HashStringValue& source_hash=GET_SELF(r, VHashBase).hash(); | |
| Value& caller=*r.get_method_frame()->caller(); | |
| int limit=source_hash.count(); | |
| bool reverse=false; | |
| if(params.count()>3) | |
| if(HashStringValue* options=params.as_hash(3)) { | |
| int valid_options=0; | |
| if(Value* vlimit=options->get(sql_limit_name)) { | |
| valid_options++; | |
| limit=r.process(*vlimit).as_int(); | |
| } | |
| if(Value* vreverse=options->get(table_reverse_name)) { | |
| valid_options++; | |
| reverse=r.process(*vreverse).as_bool(); | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); | |
| } | |
| HashStringValue& result_hash=*new HashStringValue(); | |
| if(limit>0){ | |
| #ifdef HASH_ORDER | |
| if(reverse){ | |
| for(HashStringValue::ReverseIterator i(source_hash); i; i.prev()){ | |
| if(key_var_name) | |
| r.put_element(caller, *key_var_name, new VString(*new String(i.key(), String::L_TAINTED))); | |
| if(value_var_name) | |
| r.put_element(caller, *value_var_name, i.value()); | |
| if(r.process(vcondition).as_bool()){ | |
| result_hash.put(i.key(), i.value()); | |
| if(!--limit) | |
| break; | |
| } | |
| } | |
| } else { | |
| #else | |
| { | |
| #endif | |
| for(HashStringValue::Iterator i(source_hash); i; i.next() ){ | |
| if(key_var_name) | |
| r.put_element(caller, *key_var_name, new VString(*new String(i.key(), String::L_TAINTED))); | |
| if(value_var_name) | |
| r.put_element(caller, *value_var_name, i.value()); | |
| if(r.process(vcondition).as_bool()){ | |
| result_hash.put(i.key(), i.value()); | |
| if(!--limit) | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| r.write(*new VHash(result_hash)); | |
| } | |
| static void _reverse(Request& r, MethodParams& params) { | |
| HashStringValue& source_hash=GET_SELF(r, VHashBase).hash(); | |
| HashStringValue& result_hash=*new HashStringValue(); | |
| #ifdef HASH_ORDER | |
| for(HashStringValue::ReverseIterator i(source_hash); i; i.prev()) | |
| result_hash.put(i.key(), i.value()); | |
| #else | |
| for(HashStringValue::Iterator i(source_hash); i; i.next() ) | |
| result_hash.put(i.key(), i.value()); | |
| #endif | |
| r.write(*new VHash(result_hash)); | |
| } | } |
| // constructor | // constructor |
| Line 524 MHash::MHash(): Methoded("hash") | Line 721 MHash::MHash(): Methoded("hash") |
| add_native_method("intersects", Method::CT_DYNAMIC, _intersects, 1, 1); | add_native_method("intersects", Method::CT_DYNAMIC, _intersects, 1, 1); |
| // ^a.delete[key] | // ^a.delete[key] |
| add_native_method("delete", Method::CT_DYNAMIC, _delete, 1, 1); | add_native_method("delete", Method::CT_DYNAMIC, _delete, 0, 1); |
| // ^a.contains[key] | // ^a.contains[key] |
| add_native_method("contains", Method::CT_DYNAMIC, _contains, 1, 1); | add_native_method("contains", Method::CT_DYNAMIC, _contains, 1, 1); |
| Line 535 MHash::MHash(): Methoded("hash") | Line 732 MHash::MHash(): Methoded("hash") |
| add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2); | add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2); |
| // ^hash._keys[[column name]] | // ^hash._keys[[column name]] |
| add_native_method("_keys", Method::CT_DYNAMIC, _keys, 0, 1); | add_native_method("_keys", Method::CT_DYNAMIC, _keys, 0, 1); |
| // ^hash._count[] | // ^hash._count[] |
| add_native_method("_count", Method::CT_DYNAMIC, _count, 0, 0); | add_native_method("_count", Method::CT_DYNAMIC, _count, 0, 0); |
| // ^hash.foreach[key;value]{code}[delim] | // ^hash.foreach[key;value]{code}[delim] |
| add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 2+1, 2+1+1); | add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 2+1, 2+1+1); |
| // ^hash._at[first|last] | // ^hash.sort[key;value]{string-key-maker}[[asc|desc]] |
| // ^hash._at([-]offset) | // ^hash.sort[key;value](numeric-key-maker)[[asc|desc]] |
| add_native_method("_at", Method::CT_DYNAMIC, _at, 1, 1); | add_native_method("sort", Method::CT_DYNAMIC, _sort, 3, 4); |
| // ^hash.select[key;value](bool-condition)[options hash] | |
| add_native_method("select", Method::CT_DYNAMIC, _select, 3, 4); | |
| // ^hash.reverse[] | |
| add_native_method("reverse", Method::CT_DYNAMIC, _reverse, 0, 0); | |
| // ^hash._at[first|last[;'key'|'value'|'hash']] | |
| // ^hash._at([-+]offset)[['key'|'value'|'hash']] | |
| add_native_method("_at", Method::CT_DYNAMIC, _at, 1, 2); | |
| #ifdef FEATURE_GET_ELEMENT4CALL | |
| // aliases without "_" | |
| add_native_method("keys", Method::CT_DYNAMIC, _keys, 0, 1); | |
| add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0); | |
| add_native_method("at", Method::CT_DYNAMIC, _at, 1, 2); | |
| #endif | |
| } | } |