--- parser3/src/classes/void.C 2003/02/04 14:04:47 1.28.2.2 +++ parser3/src/classes/void.C 2007/02/03 18:08:38 1.37 @@ -1,19 +1,25 @@ /** @file Parser: @b VOID parser class. - Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) */ -static const char* IDENT_VOID_C="$Date: 2003/02/04 14:04:47 $"; +static const char * const IDENT_VOID_C="$Date: 2007/02/03 18:08:38 $"; #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_vbool.h" #include "pa_sql_connection.h" -#include "pa_vmethod_frame.h" + +// externs + +extern String sql_bind_name; // class @@ -26,40 +32,46 @@ public: // Methoded // global variable -MethodedPtr void_class(new MVoid); +DECLARE_CLASS_VAR(void, new MVoid, 0); // methods -static void _length(Request& r, StringPtr /*method_name*/, MethodParams& /*params*/) { +static void _length(Request& r, MethodParams&) { // always zero - r.write_no_lang(ValuePtr(new VInt(0))); + r.write_no_lang(*new VInt(0)); } -static void _pos(Request& r, StringPtr method_name, MethodParams& params) { +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(ValuePtr(new VInt(-1))); + r.write_no_lang(*new VInt(-1)); } -static void _int(Request& r, StringPtr /*method_name*/, MethodParams& params) { - VVoid& vvoid=*static_cast(r.get_self().get()); - r.write_no_lang(ValuePtr(new VInt( - params.count()==0?vvoid.as_int():params.as_int(0, "default must be int", r)))); +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))); } -static void _double(Request& r, StringPtr /*method_name*/, MethodParams& params) { - VVoid& vvoid=*static_cast(r.get_self().get()); - r.write_no_lang(ValuePtr(new VDouble( - params.count()==0?vvoid.as_double():params.as_double(0, "default must be double", r)))); +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))); +} + +static void _bool(Request& r, MethodParams& params) { + VVoid& vvoid=GET_SELF(r, VVoid); + r.write_no_lang(*new VBool( + params.count()==0?vvoid.as_bool():params.as_bool(0, "default must be bool", r))); } #ifndef DOXYGEN class Void_sql_event_handlers: public SQL_Driver_query_event_handlers { - StringPtr statement_string; + const String& statement_string; public: - Void_sql_event_handlers(StringPtr astatement_string): statement_string(astatement_string) {} - bool add_column(SQL_Error& /*error*/, void *ptr, size_t size) { /* ignore */ return false; } + 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", @@ -68,22 +80,84 @@ public: return true; } bool add_row(SQL_Error& /*error*/) { /* never */ return false; } - bool add_row_cell(SQL_Error& /*error*/, void *ptr, size_t size) { /* never */ return false; } + bool add_row_cell(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* never */ return false; } }; #endif -static void _sql(Request& r, StringPtr method_name, MethodParams& params) { - ValuePtr statement=params.as_junction(0, "statement must be code"); - Temp_lang temp_lang(r, String::UL_SQL); - StringPtr statement_string=r.process_to_string(statement); - CharPtr statement_cstr= - statement_string->cstr(String::UL_UNSPECIFIED, r.connection(method_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); + +static void _sql(Request& r, MethodParams& params) { + Value& statement=params.as_junction(0, "statement must be code"); + + HashStringValue* bind=0; + 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(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; + 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()); Void_sql_event_handlers handlers(statement_string); - r.connection(method_name)->query( - statement_cstr, 0, 0, + r.connection()->query( + statement_cstr, + placeholders_count, placeholders, + 0, 0, handlers, statement_string); + + if(bind) + unmarshal_bind_updates(*bind, placeholders_count, placeholders); +} + +static void _left_right(Request& r, MethodParams& params) { + ssize_t sn=params.as_int(0, "n must be int", r); + if(sn<0) + throw Exception("parser.runtime", + 0, + "n(%d) must be >=0", sn); + + // return nothing +} + +static void _mid(Request& r, MethodParams& params) { + ssize_t sbegin=params.as_int(0, "p must be int", r); + if(sbegin<0) + throw Exception("parser.runtime", + 0, + "p(%d) must be >=0", sbegin); + + if(params.count()>1) { + ssize_t sn=params.as_int(1, "n must be int", r); + if(sn<0) + throw Exception("parser.runtime", + 0, + "n(%d) must be >=0", sn); + } + + // return nothing } // constructor @@ -95,14 +169,25 @@ MVoid::MVoid(): Methoded("void") { // ^void.pos[substr] add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); - // ^void.int[] + // ^void.int[] // ^void.int(default) add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); - // ^void.double[] + // ^void.double[] // ^void.double(default) add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); + // ^void.bool[] + // ^void.bool(default) + add_native_method("bool", Method::CT_DYNAMIC, _bool, 0, 1); + // ^sql[query] - add_native_method("sql", Method::CT_STATIC, _sql, 1, 1); + add_native_method("sql", Method::CT_STATIC, _sql, 1, 2); + + // ^void.left() ^void.right() + add_native_method("left", Method::CT_DYNAMIC, _left_right, 1, 1); + add_native_method("right", Method::CT_DYNAMIC, _left_right, 1, 1); + + // ^void.mid(p;n) + add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2); }