--- parser3/src/classes/void.C 2001/06/28 07:41:59 1.2 +++ parser3/src/classes/void.C 2003/11/20 16:34:23 1.30 @@ -1,111 +1,109 @@ /** @file Parser: @b VOID parser class. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - - Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: void.C,v 1.2 2001/06/28 07:41:59 parser Exp $ + Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -static char *RCSId="$Id: void.C,v 1.2 2001/06/28 07:41:59 parser Exp $"; + +static const char * const IDENT_VOID_C="$Date: 2003/11/20 16:34:23 $"; #include "classes.h" +#include "pa_vmethod_frame.h" + #include "pa_request.h" #include "pa_vint.h" #include "pa_vdouble.h" #include "pa_vvoid.h" #include "pa_sql_connection.h" -// defines - -#define VOID_CLASS_NAME "void" - // class -class MVoid : public Methoded { +class MVoid: public Methoded { public: - MVoid(Pool& pool); + MVoid(); public: // Methoded bool used_directly() { return true; } }; +// global variable + +DECLARE_CLASS_VAR(void, new MVoid, 0); + // methods -static void _int(Request& r, const String&, MethodParams *) { - Pool& pool=r.pool(); - VInt *vunknown=static_cast(r.self); - Value& value=*new(pool) VInt(pool, vunknown->as_int()); - r.write_no_lang(value); -} - -static void _double(Request& r, const String&, MethodParams *) { - Pool& pool=r.pool(); - VInt *vunknown=static_cast(r.self); - Value& value=*new(pool) VDouble(pool, vunknown->as_double()); - r.write_no_lang(value); -} - -static void _sql(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - - if(!r.connection) - PTHROW(0, 0, - &method_name, - "without connect"); - - Value& statement=params->get_junction(0, "statement must be code"); - - 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); - unsigned int sql_column_count; SQL_Driver::Cell *sql_columns; - unsigned long sql_row_count; SQL_Driver::Cell **sql_rows; - bool need_rethrow=false; Exception rethrow_me; - PTRY { - r.connection->query( - statement_cstr, 0, 0, - &sql_column_count, &sql_columns, - &sql_row_count, &sql_rows); - } - PCATCH(e) { // connect/process problem - rethrow_me=e; need_rethrow=true; - } - PEND_CATCH - if(need_rethrow) - PTHROW(rethrow_me.type(), rethrow_me.code(), - &statement_string, // setting more specific source [were url] - rethrow_me.comment()); - - // there are some result rows, which is wrong - if(sql_row_count) - PTHROW(0, 0, - &statement_string, - "must not return result"); +static void _length(Request& r, MethodParams&) { + // always zero + r.write_no_lang(*new VInt(0)); } -// constructor - -MVoid::MVoid(Pool& apool) : Methoded(apool) { - set_name(*NEW String(pool(), VOID_CLASS_NAME)); +static void _pos(Request& r, MethodParams& params) { + // just checking for consistency + params.as_no_junction(0, "substr must not be code"); + // never found + r.write_no_lang(*new VInt(-1)); +} +static void _int(Request& r, MethodParams& params) { + VVoid& vvoid=GET_SELF(r, VVoid); + r.write_no_lang(*new VInt( + params.count()==0?vvoid.as_int():params.as_int(0, "default must be int", r))); +} - // ^VOID.int[] - add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0); +static void _double(Request& r, MethodParams& params) { + VVoid& vvoid=GET_SELF(r, VVoid); + r.write_no_lang(*new VDouble( + params.count()==0?vvoid.as_double():params.as_double(0, "default must be double", r))); +} - // ^VOID.double[] - add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0); +#ifndef DOXYGEN +class Void_sql_event_handlers: public SQL_Driver_query_event_handlers { + const String& statement_string; +public: + Void_sql_event_handlers(const String& astatement_string): statement_string(astatement_string) {} + bool add_column(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* ignore */ return false; } + bool before_rows(SQL_Error& error) { + // there are some result rows, which is wrong + error=SQL_Error("parser.runtime", + /*statement_string,*/ + "must return nothing"); + return true; + } + bool add_row(SQL_Error& /*error*/) { /* never */ return false; } + bool add_row_cell(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* never */ return false; } - // ^sql[query] - add_native_method("sql", Method::CT_STATIC, _sql, 1, 1); +}; +#endif +static void _sql(Request& r, MethodParams& params) { + Value& statement=params.as_junction(0, "statement must be code"); + + 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()); + Void_sql_event_handlers handlers(statement_string); + r.connection()->query( + statement_cstr, 0, 0, + handlers, + statement_string); } -// global variable - -Methoded *void_class; +// constructor -// creator +MVoid::MVoid(): Methoded("void") { + // ^void.length[] + add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); + + // ^void.pos[substr] + add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); + + // ^void.int[] + // ^void.int(default) + add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); + + // ^void.double[] + // ^void.double(default) + add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); -Methoded *MVoid_create(Pool& pool) { - return void_class=new(pool) MVoid(pool); + // ^sql[query] + add_native_method("sql", Method::CT_STATIC, _sql, 1, 1); }