--- parser3/src/classes/Attic/root.C 2001/03/12 20:36:52 1.30 +++ parser3/src/classes/Attic/root.C 2001/03/18 13:38:45 1.41 @@ -3,7 +3,7 @@ Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) Author: Alexander Petrosyan (http://design.ru/paf) - $Id: root.C,v 1.30 2001/03/12 20:36:52 paf Exp $ + $Id: root.C,v 1.41 2001/03/18 13:38:45 paf Exp $ */ #include @@ -11,19 +11,30 @@ #include "pa_request.h" #include "_root.h" +#include "pa_vint.h" +#include "pa_common.h" -static void _if(Request& r, const String&, Array *params) { - bool condition= - r.process( - *static_cast(params->get(0)), - 0/*no name*/, - false/*don't intercept string*/).get_bool(); +static void _if(Request& r, const String& method_name, Array *params) { + Value& condition_code=*static_cast(params->get(0)); + // forcing ^if(this param type) + r.fail_if_junction_(false, condition_code, + method_name, "condition must be junction"); + + bool condition=r.process(condition_code, + 0/*no name*/, + false/*don't intercept string*/).get_bool(); if(condition) { - Value& value=r.process(*static_cast(params->get(1))); - r.write_pass_lang(value); + Value& then_code=*static_cast(params->get(1)); + // forcing ^if(this param type) + r.fail_if_junction_(false, then_code, + method_name, "then-parameter must be junction"); + r.write_pass_lang(r.process(then_code)); } else if(params->size()==3) { - Value& value=r.process(*static_cast(params->get(2))); - r.write_pass_lang(value); + Value& else_code=*static_cast(params->get(2)); + // forcing ^if(this param type) + r.fail_if_junction_(false, else_code, + method_name, "else-parameter must be junction"); + r.write_pass_lang(r.process(else_code)); } } @@ -32,7 +43,7 @@ static void _untaint(Request& r, const S String::Untaint_lang lang=static_cast( untaint_lang_name2enum->get_int(lang_name)); if(!lang) - R_THROW(0, 0, + RTHROW(0, 0, &lang_name, "invalid untaint language"); @@ -61,7 +72,7 @@ static void _process(Request& r, const S strncpy(place, MAX_STRING, method_name.cstr()); #endif - VClass& self_class=*r.self->get_class(); + VStateless_class& self_class=*r.self->get_class(); { // temporary zero @main so to maybe-replace it in processed code Temp_method temp_method(self_class, *main_method_name, 0); @@ -103,7 +114,7 @@ static void _while(Request& r, const Str int endless_loop_count=0; while(true) { if(++endless_loop_count>=1973) // endless loop? - R_THROW(0, 0, + RTHROW(0, 0, &method_name, "endless loop detected"); @@ -130,11 +141,69 @@ static void _use(Request& r, const Strin r.use_file(r.absolute(file)); } +static void _for(Request& r, const String& method_name, Array *params) { + // ^for[i;from-number;to-number-inclusive]{code}[delim] + + Pool& pool=r.pool(); + const String& var_name=r.process(*static_cast(params->get(0))).as_string(); + int from=(int)r.process(*static_cast(params->get(1))).get_double(); + int to=(int)r.process(*static_cast(params->get(2))).get_double(); + Value& body_code=*static_cast(params->get(3)); + // forcing ^menu{this param type} + r.fail_if_junction_(false, body_code, + method_name, "body must be junction"); + Value *delim_code=params->size()==3+1+1?static_cast(params->get(3+1)):0; + + bool need_delim=false; + VInt *vint=new(pool) VInt(pool, 0); + int endless_loop_count=0; + for(int i=from; i<=to; i++) { + if(++endless_loop_count>=2001) // endless loop? + RTHROW(0, 0, + &method_name, + "endless loop detected"); + vint->set_int(i); + r.wcontext->put_element(var_name, vint); + + Value& processed_body=r.process(body_code); + if(delim_code) { // delimiter set? + const String *string=processed_body.get_string(); + if(need_delim && string && string->size()) // need delim & iteration produced string? + r.write_pass_lang(r.process(*delim_code)); + need_delim=true; + } + r.write_pass_lang(processed_body); + } +} + +static void _eval(Request& r, const String& method_name, Array *params) { + Value& expr=*static_cast(params->get(0)); + r.fail_if_junction_(false, expr, + method_name, "need expression"); + // evaluate expresion + Value *result=r.process(expr, + 0/*no name*/, + true/*don't intercept string*/).get_expr_result(); + if(params->size()==2) { + Value& fmt=*static_cast(params->get(1)); + // forcing ^format[this param type] + r.fail_if_junction_(true, fmt, + method_name, "fmt must not be junction"); + + Pool& pool=r.pool(); + String& string=*new(pool) String(pool); + string.APPEND_CONST(format(pool, result->get_double(), fmt.as_string().cstr())); + result=new(pool) VString(string); + } + r.write_no_lang(*result); +} + + 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 _math_one_double_op( +static void double_one_op( Request& r, const String& method_name, Array *params, math_one_double_op_func_ptr func) { @@ -146,31 +215,32 @@ static void _math_one_double_op( method_name, "parameter must be expression"); Value& result=*new(pool) VDouble(pool, (*func)(r.process(param).get_double())); - r.wcontext->write(result, String::Untaint_lang::NO /*always object, not string*/); + r.write_no_lang(result); } - static void _round(Request& r, const String& method_name, Array *params) { - _math_one_double_op(r, method_name, params, &round); + double_one_op(r, method_name, params, &round); } static void _floor(Request& r, const String& method_name, Array *params) { - _math_one_double_op(r, method_name, params, &floor); + double_one_op(r, method_name, params, &floor); } static void _ceiling(Request& r, const String& method_name, Array *params) { - _math_one_double_op(r, method_name, params, &ceil); + double_one_op(r, method_name, params, &ceil); } static void _abs(Request& r, const String& method_name, Array *params) { - _math_one_double_op(r, method_name, params, &fabs); + double_one_op(r, method_name, params, &fabs); } static void _sign(Request& r, const String& method_name, Array *params) { - _math_one_double_op(r, method_name, params, &sign); + double_one_op(r, method_name, params, &sign); } -void initialize_root_class(Pool& pool, VClass& vclass) { +// initialize + +void initialize_root_class(Pool& pool, VStateless_class& vclass) { // ^if(condition){code-when-true} // ^if(condition){code-when-true}{code-when-false} vclass.add_native_method("if", _if, 2, 3); @@ -190,6 +260,13 @@ void initialize_root_class(Pool& pool, V // ^use[file] vclass.add_native_method("use", _use, 1, 1); + // ^for[i;from-number;to-number-inclusive]{code}[delim] + vclass.add_native_method("for", _for, 3+1, 3+1+1); + + // ^eval(expr) + // ^eval(expr)[format] + vclass.add_native_method("eval", _eval, 1, 2); + // math functions @@ -207,5 +284,4 @@ void initialize_root_class(Pool& pool, V // ^sign(expr) vclass.add_native_method("sign", _sign, 1, 1); - }