--- parser3/src/classes/Attic/root.C 2001/03/12 10:21:23 1.22 +++ parser3/src/classes/Attic/root.C 2001/03/12 20:36:52 1.30 @@ -3,10 +3,11 @@ Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) Author: Alexander Petrosyan (http://design.ru/paf) - $Id: root.C,v 1.22 2001/03/12 10:21:23 paf Exp $ + $Id: root.C,v 1.30 2001/03/12 20:36:52 paf Exp $ */ #include +#include #include "pa_request.h" #include "_root.h" @@ -29,34 +30,30 @@ static void _if(Request& r, const String static void _untaint(Request& r, const String& method_name, Array *params) { const String& lang_name=r.process(*static_cast(params->get(0))).as_string(); String::Untaint_lang lang=static_cast( - untaint_lang_name_to_enum->get_int(lang_name)); + untaint_lang_name2enum->get_int(lang_name)); if(!lang) R_THROW(0, 0, &lang_name, "invalid untaint language"); - Temp_lang temp_lang(r, lang); - Value *value=static_cast(params->get(1)); - // forcing ^untaint[]{this param type} - if(!value->get_junction()) - R_THROW(0, 0, - &method_name, - "body must be junction"); - - value=&r.process(*value); - r.write_pass_lang(*value); + { + Temp_lang temp_lang(r, lang); + Value *vbody=static_cast(params->get(1)); + // forcing ^untaint[]{this param type} + r.fail_if_junction_(false, *vbody, + method_name, "body must be junction"); + + r.write_pass_lang(r.process(*vbody)); + } } static void _process(Request& r, const String& method_name, Array *params) { - // evaluate source to process - const String& source=r.process(*static_cast(params->get(0))).as_string(); - // calculate pseudo file name of processed chars // would be something like "/some/file(4) process" char place[MAX_STRING]; #ifndef NO_STRING_ORIGIN - const Origin& origin=source.origin(); + const Origin& origin=method_name.origin(); snprintf(place, MAX_STRING, "%s(%d) %s", origin.file, 1+origin.line, method_name.cstr()); @@ -69,6 +66,10 @@ static void _process(Request& r, const S // temporary zero @main so to maybe-replace it in processed code Temp_method temp_method(self_class, *main_method_name, 0); + // evaluate source to process + const String& source= + r.process(*static_cast(params->get(0))).as_string(); + // process source code, append processed methods to 'self' class // maybe-define new @main r.use_buf(source.cstr(), place, &self_class); @@ -81,6 +82,93 @@ static void _process(Request& r, const S } } +static void _rem(Request& r, const String& method_name, Array *params) { + // forcing ^rem{this param type} + r.fail_if_junction_(false, *static_cast(params->get(0)), + method_name, "body must be junction"); +} + +static void _while(Request& r, const String& method_name, Array *params) { + Value& vcondition=*static_cast(params->get(0)); + // forcing ^while(this param type){} + r.fail_if_junction_(false, vcondition, + method_name, "condition must be junction"); + + Value& body=*static_cast(params->get(1)); + // forcing ^while(){this param type} + r.fail_if_junction_(false, body, + method_name, "body must be junction"); + + // while... + int endless_loop_count=0; + while(true) { + if(++endless_loop_count>=1973) // endless loop? + R_THROW(0, 0, + &method_name, + "endless loop detected"); + + bool condition= + r.process( + vcondition, + 0/*no name*/, + false/*don't intercept string*/).get_bool(); + if(!condition) // ...condition is true + break; + + // write processed body + r.write_pass_lang(r.process(body)); + } +} + +static void _use(Request& r, const String& method_name, Array *params) { + Value& vfile=*static_cast(params->get(0)); + // forcing ^rem{this param type} + r.fail_if_junction_(true, vfile, + method_name, "file name must not be junction"); + + char *file=vfile.as_string().cstr(); + r.use_file(r.absolute(file)); +} + +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( + Request& r, + const String& method_name, Array *params, + math_one_double_op_func_ptr func) { + Pool& pool=r.pool(); + Value& param=*static_cast(params->get(0)); + + // forcing ^round(this param type) + r.fail_if_junction_(false, param, + 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*/); +} + + +static void _round(Request& r, const String& method_name, Array *params) { + _math_one_double_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); +} + +static void _ceiling(Request& r, const String& method_name, Array *params) { + _math_one_double_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); +} + +static void _sign(Request& r, const String& method_name, Array *params) { + _math_one_double_op(r, method_name, params, &sign); +} void initialize_root_class(Pool& pool, VClass& vclass) { // ^if(condition){code-when-true} @@ -92,4 +180,32 @@ void initialize_root_class(Pool& pool, V // ^process[code] vclass.add_native_method("process", _process, 1, 1); + + // ^rem{code} + vclass.add_native_method("rem", _rem, 1, 1); + + // ^while(condition){code} + vclass.add_native_method("while", _while, 2, 2); + + // ^use[file] + vclass.add_native_method("use", _use, 1, 1); + + + // math functions + + // ^round(expr) + vclass.add_native_method("round", _round, 1, 1); + + // ^floor(expr) + vclass.add_native_method("floor", _floor, 1, 1); + + // ^ceiling(expr) + vclass.add_native_method("ceiling", _ceiling, 1, 1); + + // ^abs(expr) + vclass.add_native_method("abs", _abs, 1, 1); + + // ^sign(expr) + vclass.add_native_method("sign", _sign, 1, 1); + }