--- parser3/src/classes/op.C 2001/05/21 17:17:11 1.23 +++ parser3/src/classes/op.C 2001/07/03 10:10:21 1.33 @@ -4,9 +4,8 @@ Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: op.C,v 1.23 2001/05/21 17:17:11 parser Exp $ */ +static const char *RCSId="$Id: op.C,v 1.33 2001/07/03 10:10:21 parser Exp $"; #include "classes.h" #include "pa_config_includes.h" @@ -26,6 +25,9 @@ #define MAIN_SQL_NAME "SQL" #define MAIN_SQL_DRIVERS_NAME "drivers" +#define SWITCH_DATA_NAME "SWITCH-DATA" +#define DEFAULT_VALUE "DEFAULT" + // local variable static Methoded *OP; @@ -52,9 +54,9 @@ static void _if(Request& r, const String 0/*no name*/, false/*don't intercept string*/).as_bool(); if(condition) - r.write_pass_lang(r.process(params->get(1))); + r.write_pass_lang(r.process(params->get_junction(1, "'then' parameter must be code"))); else if(params->size()==3) - r.write_pass_lang(r.process(params->get(2))); + r.write_pass_lang(r.process(params->get_junction(2, "'else' parameter must be code"))); } static void _untaint(Request& r, const String& method_name, MethodParams *params) { @@ -225,41 +227,6 @@ static void _eval(Request& r, const Stri } -typedef double (*math_one_double_op_func_ptr)(double); -static double round(double op) { return floor(op+0.5); } -static double sign(double op) { return op > 0 ? 1 : ( op < 0 ? -1 : 0 ); } - -static void double_one_op(Request& r, - const String& method_name, MethodParams *params, - math_one_double_op_func_ptr func) { - Pool& pool=r.pool(); - Value& param=params->get_junction(0, "parameter must be expression"); - - Value& result=*new(pool) VDouble(pool, (*func)(r.process(param).as_double())); - result.set_name(method_name); - r.write_no_lang(result); -} - -static void _round(Request& r, const String& method_name, MethodParams *params) { - double_one_op(r, method_name, params, &round); -} - -static void _floor(Request& r, const String& method_name, MethodParams *params) { - double_one_op(r, method_name, params, &floor); -} - -static void _ceiling(Request& r, const String& method_name, MethodParams *params) { - double_one_op(r, method_name, params, &ceil); -} - -static void _abs(Request& r, const String& method_name, MethodParams *params) { - double_one_op(r, method_name, params, &fabs); -} - -static void _sign(Request& r, const String& method_name, MethodParams *params) { - double_one_op(r, method_name, params, &sign); -} - static void _connect(Request& r, const String&, MethodParams *params) { Pool& pool=r.pool(); @@ -309,6 +276,54 @@ static void _connect(Request& r, const S rethrow_me.comment()); } +static String *switch_data_name; +static String *default_value; + +struct Switch_data { + Value *searching; + Value *found; + Value *_default; +}; + +static void _switch(Request& r, const String&, MethodParams *params) { + void *backup=r.classes_conf.get(*switch_data_name); + Switch_data data={&r.process(params->get(0))}; + r.classes_conf.put(*switch_data_name, &data); + + r.process(params->get_junction(1, "switch cases must be code")); // and ignore result + + r.classes_conf.put(*switch_data_name, backup); + + if(Value *code=data.found ? data.found : data._default) + r.write_pass_lang(r.process(*code)); +} + +static void _case(Request& r, const String&, MethodParams *params) { + Switch_data& data=*static_cast(r.classes_conf.get(*switch_data_name)); + + int count=params->size(); + Value *code=¶ms->get_junction(--count, "case result must be code"); + for(int i=0; iget(i)); + + if(value.as_string() == *default_value) { + data._default=code; + break; + } + + bool matches; + if(data.searching->is_string()) + matches=data.searching->as_string() == value.as_string(); + else + matches=data.searching->as_double() == value.as_double(); + + if(matches) { + data.found=code; + break; + } + } +} + // constructor MOP::MOP(Pool& apool) : Methoded(apool), @@ -317,6 +332,9 @@ MOP::MOP(Pool& apool) : Methoded(apool), { set_name(*NEW String(pool(), OP_CLASS_NAME)); + switch_data_name=NEW String(pool(), SWITCH_DATA_NAME); + default_value=NEW String(pool(), DEFAULT_VALUE); + // ^if(condition){code-when-true} // ^if(condition){code-when-true}{code-when-false} add_native_method("if", Method::CT_ANY, _if, 2, 3); @@ -331,7 +349,7 @@ MOP::MOP(Pool& apool) : Methoded(apool), add_native_method("process", Method::CT_ANY, _process, 1, 1); // ^rem{code} - add_native_method("rem", Method::CT_ANY, _rem, 1, 1); + add_native_method("rem", Method::CT_ANY, _rem, 1, 1000); // ^while(condition){code} add_native_method("while", Method::CT_ANY, _while, 2, 2); @@ -347,29 +365,16 @@ MOP::MOP(Pool& apool) : Methoded(apool), add_native_method("eval", Method::CT_ANY, _eval, 1, 2); - // math functions - - // ^round(expr) - add_native_method("round", Method::CT_ANY, _round, 1, 1); - - // ^floor(expr) - add_native_method("floor", Method::CT_ANY, _floor, 1, 1); - - // ^ceiling(expr) - add_native_method("ceiling", Method::CT_ANY, _ceiling, 1, 1); - - // ^abs(expr) - add_native_method("abs", Method::CT_ANY, _abs, 1, 1); - - // ^sign(expr) - add_native_method("sign", Method::CT_ANY, _sign, 1, 1); - - - // connect - // ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s} add_native_method("connect", Method::CT_ANY, _connect, 2, 2); + // switch + + // ^switch[value]{cases} + add_native_method("switch", Method::CT_ANY, _switch, 2, 2); + + // ^case[value]{code} + add_native_method("case", Method::CT_ANY, _case, 2, 1000); } // constructor & configurator