--- parser3/src/classes/string.C 2001/03/10 11:03:47 1.2 +++ parser3/src/classes/string.C 2001/04/04 10:50:33 1.35 @@ -1,71 +1,276 @@ -/* -$Id: string.C,v 1.2 2001/03/10 11:03:47 paf Exp $ +/** @file + Parser: @b string parser class. + + Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + + Author: Alexander Petrosyan (http://design.ru/paf) + + $Id: string.C,v 1.35 2001/04/04 10:50:33 paf Exp $ */ #include "pa_request.h" #include "_string.h" #include "pa_vdouble.h" #include "pa_vint.h" +#include "pa_vtable.h" +#include "pa_vbool.h" +#include "pa_string.h" // global var -VClass *string_class; +VStateless_class *string_class; // methods -static void _length(Request& r, Array *) { +static void _length(Request& r, const String&, Array *) { Pool& pool=r.pool(); - Value& value=*new(pool) VDouble(pool, r.self->as_string().size()); - r.wcontext->write(value); + Value& value=*new(pool) VDouble(pool, r.self->get_string()->size()); + r.write_no_lang(value); } -static void _int(Request& r, Array *) { +static void _int(Request& r, const String&, Array *) { Pool& pool=r.pool(); - Value& value=*new(pool) VInt(pool, static_cast(r.self->get_double())); - r.wcontext->write(value); + Value& value=*new(pool) VInt(pool, (int)r.self->as_double()); + r.write_no_lang(value); } -static void _double(Request& r, Array *) { +static void _double(Request& r, const String&, Array *) { Pool& pool=r.pool(); - Value& value=*new(pool) VDouble(pool, r.self->get_double()); - r.wcontext->write(value); + Value& value=*new(pool) VDouble(pool, r.self->as_double()); + r.write_no_lang(value); } -void initialize_string_class(Pool& pool, VClass& vclass) { - // ^string.length[] - String& LENGTH_NAME=*new(pool) String(pool); - LENGTH_NAME.APPEND_CONST("length"); +/// ^string.format{format} +/*not static*/void _string_format(Request& r, const String& method_name, Array *params) { + Pool& pool=r.pool(); - Method& LENGTH_METHOD=*new(pool) Method(pool, - LENGTH_NAME, - 0, 0, // min,max numbered_params_count - 0/*params_names*/, 0/*locals_names*/, - 0/*parser_code*/, _length - ); - vclass.add_method(LENGTH_NAME, LENGTH_METHOD); + Value& fmt=*static_cast(params->get(0)); + // forcing {this param type} + r.fail_if_junction_(false, fmt, method_name, "fmt must be junction"); + + Temp_lang temp_lang(r, String::UL_PASS_APPENDED); + char *buf=format(pool, r.self->as_double(), r.process(fmt).as_string().cstr()); + + r.write_no_lang(String(pool, buf)); +} - // ^string.int[] - String& INT_NAME=*new(pool) String(pool); - INT_NAME.APPEND_CONST("int"); +static void _left(Request& r, const String&, Array *params) { + Pool& pool=r.pool(); + + size_t n=(size_t)r.process(*static_cast(params->get(0))).as_double(); + + const String& string=*static_cast(r.self)->get_string(); + r.write_assign_lang(*new(pool) VString(string.mid(0, n))); +} + +static void _right(Request& r, const String&, Array *params) { + Pool& pool=r.pool(); + + size_t n=(size_t)r.process(*static_cast(params->get(0))).as_double(); + + const String& string=*static_cast(r.self)->get_string(); + r.write_assign_lang(*new(pool) VString(string.mid(string.size()-n, string.size()))); +} + +static void _mid(Request& r, const String&, Array *params) { + Pool& pool=r.pool(); + + size_t p=(size_t)r.process(*static_cast(params->get(0))).as_double(); + size_t n=(size_t)r.process(*static_cast(params->get(1))).as_double(); + + const String& string=*static_cast(r.self)->get_string(); + r.write_assign_lang(*new(pool) VString(string.mid(p, p+n))); +} + +static void _pos(Request& r, const String& method_name, Array *params) { + Pool& pool=r.pool(); + + Value& substr=*static_cast(params->get(0)); + // forcing [this param type] + r.fail_if_junction_(true, substr, method_name, "substr must not be junction"); + + const String& string=*static_cast(r.self)->get_string(); + r.write_assign_lang(*new(pool) VInt(pool, string.pos(substr.as_string()))); +} + +static void split_list(Request& r, const String& method_name, Array *params, + const String& string, + Array& result) { + Pool& pool=r.pool(); + + Value& delim_value=*static_cast(params->get(0)); + // forcing [this param type] + r.fail_if_junction_(true, delim_value, method_name, "delimiter must not be junction"); + + string.split(result, 0, delim_value.as_string(), String::UL_CLEAN, -1); +} + +static void _lsplit(Request& r, const String& method_name, Array *params) { + Pool& pool=r.pool(); + const String& string=*static_cast(r.self)->get_string(); + + Array& row=*new(pool) Array(pool); + split_list(r, method_name, params, string, row); + + Table& table=*new(pool) Table(pool, &string, + 0/*nameless*/, 1/*row preallocate(and only)*/); + table+=&row; + + r.write_no_lang(*new(pool) VTable(pool, &table)); +} + +static void _rsplit(Request& r, const String& method_name, Array *params) { + Pool& pool=r.pool(); + const String& string=*static_cast(r.self)->get_string(); + + Array list(pool); + split_list(r, method_name, params, string, list); + + Array& row=*new(pool) Array(pool); + for(int i=list.size(); --i>=0; ) + row+=list.get(i); + + Table& table=*new(pool) Table(pool, &string, + 0/*nameless*/, 1/*row preallocate(and only)*/); + table+=&row; + + r.write_no_lang(*new(pool) VTable(pool, &table)); +} + +static void search_action(Table& table, Array *row, int, int, void *) { + if(row) + table+=row; +} - Method& INT_METHOD=*new(pool) Method(pool, - INT_NAME, - 0, 0, // min,max numbered_params_count - 0/*params_names*/, 0/*locals_names*/, - 0/*parser_code*/, _int - ); - vclass.add_method(INT_NAME, INT_METHOD); +struct Replace_action_info { + Request *request; const String *origin; + const String *src; String *dest; + Value *replacement_code; + const String *post_match; +}; +static void replace_action(Table& table, Array *row, int start, int finish, + void *info) { + Replace_action_info& ai=*static_cast(info); + if(row) { // begin&middle + // piece from last match['start'] to beginning of this match['finish'] + if(start!=finish) + ai.dest->append(ai.src->mid(start, finish), String::UL_PASS_APPENDED);//ai.dest->APPEND_CONST("-"); + // store found parts in one-record Vtable + if(table.size()) // middle + table.put(0, row); + else // begin + table+=row; + { // execute 'replacement_code' in 'table' context + VTable& vtable=*new(table.pool()) VTable(table.pool(), &table); + vtable.set_name(*ai.origin); + + Junction *junction=ai.replacement_code->get_junction(); + junction->rcontext=junction->root=&vtable; + Value& replaced=ai.request->process(*ai.replacement_code, ai.origin, false); + + /* + ai.dest->APPEND_CONST("("); + ai.dest->append(*(String *)row->get(1/*match* /), String::UL_PASS_APPENDED); + ai.dest->APPEND_CONST(")"); + */ + ai.dest->append(replaced.as_string(), String::UL_PASS_APPENDED); + } + ai.post_match=(String *)row->get(2/*post_match*/); + } else // end + ai.dest->append(*ai.post_match, String::UL_PASS_APPENDED); +} + +/** search/replace + ^string.match[regexp][options] + ^string.match[regexp][options]{replacement-code} +*/ +static void _match(Request& r, const String& method_name, Array *params) { + Pool& pool=r.pool(); + const String& src=*static_cast(r.self)->get_string(); + Value& regexp=*static_cast(params->get(0)); + // forcing [this param type] + r.fail_if_junction_(true, regexp, method_name, "regexp must not be junction"); + + const String *options=0; + if(params->size()>1) { + Value& value=*static_cast(params->get(1)); + // forcing {this param type} + r.fail_if_junction_(true, value, method_name, "options must not be junction"); + options=&value.as_string(); + } + + Value *result; + Temp_lang temp_lang(r, String::UL_PASS_APPENDED); + Table *table; + if(params->size()<3) { // search + if(src.match(&method_name, + regexp.as_string(), options, + &table, + search_action, 0)) { + // matched + if(table->columns()->size()==3 && // just matched[3=pre/match/post], no substrings + table->size()==1) // just one row, not /g_lobal search + result=new(pool) VBool(pool, true); + else // table of pre/match/post+substrings + result=new(pool) VTable(pool, table); + } else // not matched [not global] + result=new(pool) VBool(pool, false); + } else { // replace + Value& replacement_code=*static_cast(params->get(2)); + // forcing {this param type} + r.fail_if_junction_(false, replacement_code, + method_name, "replacement code must be junction"); + + String& dest=*new(pool) String(pool); + Replace_action_info replace_action_info={ + &r, &method_name, + &src, &dest, + &replacement_code, + &src + }; + src.match(&method_name, + r.process(regexp).as_string(), options, + &table, + replace_action, &replace_action_info); + result=new(pool) VString(dest); + } + result->set_name(method_name); + r.write_assign_lang(*result); +} + +// initialize + +void initialize_string_class(Pool& pool, VStateless_class& vclass) { + // ^string.length[] + vclass.add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); + + // ^string.int[] + vclass.add_native_method("int", Method::CT_DYNAMIC, _int, 0, 0); + // ^string.double[] - String& DOUBLE_NAME=*new(pool) String(pool); - DOUBLE_NAME.APPEND_CONST("double"); + vclass.add_native_method("double", Method::CT_DYNAMIC, _double, 0, 0); + + // ^string.format{format} + vclass.add_native_method("format", Method::CT_DYNAMIC, _string_format, 1, 1); - Method& DOUBLE_METHOD=*new(pool) Method(pool, - DOUBLE_NAME, - 0, 0, // min,max numbered_params_count - 0/*params_names*/, 0/*locals_names*/, - 0/*parser_code*/, _double - ); - vclass.add_method(DOUBLE_NAME, DOUBLE_METHOD); + // ^string.left(n) + vclass.add_native_method("left", Method::CT_DYNAMIC, _left, 1, 1); + // ^string.right(n) + vclass.add_native_method("right", Method::CT_DYNAMIC, _right, 1, 1); + // ^string.mid(p;n) + vclass.add_native_method("mid", Method::CT_DYNAMIC, _mid, 2, 2); + + // ^string.pos[substr] + vclass.add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); + + // ^string.lsplit[delim] + vclass.add_native_method("lsplit", Method::CT_DYNAMIC, _lsplit, 1, 1); + // ^string.rsplit[delim] + vclass.add_native_method("rsplit", Method::CT_DYNAMIC, _rsplit, 1, 1); + + // ^string.match[regexp][options] + // ^string.match[regexp][options]{replacement-code} + vclass.add_native_method("match", Method::CT_DYNAMIC, _match, 1, 3); }