Annotation of parser3/src/main/pa_table.C, revision 1.53.2.2
1.14 paf 1: /** @file
1.15 paf 2: Parser: table class.
3:
1.53 paf 4: Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.44 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.48 paf 6: */
1.15 paf 7:
1.53.2.2! paf 8: static const char* IDENT_TABLE_C="$Date: 2003/01/23 15:38:06 $";
1.1 paf 9:
1.48 paf 10: //#include <stdlib.h>
1.2 paf 11:
1.1 paf 12: #include "pa_table.h"
13: #include "pa_pool.h"
1.25 paf 14: #include "pa_exception.h"
1.1 paf 15:
1.53.2.1 paf 16: Table::Table(
17: object_ptr<const String> aorigin_string,
1.53.2.2! paf 18: object_ptr<const Array<column_type> > acolumns,
1.53.2.1 paf 19: int initial_rows):
20: Array<element_type>(initial_rows),
1.13 paf 21:
1.18 paf 22: forigin_string(aorigin_string),
1.5 paf 23: fcurrent(0),
24: fcolumns(acolumns),
1.53.2.1 paf 25: name2number(object_ptr<name2number_hash_class>(new name2number_hash_class)) {
1.1 paf 26:
1.53.2.1 paf 27: if(fcolumns.get())
28: for(int i=0; i<fcolumns->count(); i++) {
1.53.2.2! paf 29: const String& name=*fcolumns->get(i).get();
1.53.2.1 paf 30: name2number->put(name, i+1);
1.1 paf 31: }
1.42 paf 32: }
33:
1.53.2.1 paf 34: Table::Table(const Table& src, int offset, int limit) :
35: Array<element_type>(limit/*may be more than needed, no harm done*/),
1.42 paf 36:
1.53.2.1 paf 37: forigin_string(src.forigin_string),
1.51 paf 38: fcurrent(0),
1.53.2.1 paf 39: fcolumns(src.fcolumns),
40: name2number(src.name2number) {
1.42 paf 41:
1.53.2.1 paf 42: append(src, offset, limit);
1.2 paf 43: }
44:
1.53.2.1 paf 45: int Table::column_name2index(object_ptr<const String> column_name, bool bark) const {
46: if(fcolumns.get()) {// named
47: int result=name2number->get(*column_name.get())-1; // -1 = column not found
1.29 paf 48: if(bark && result<0)
1.45 paf 49: throw Exception("parser.runtime",
1.53.2.1 paf 50: column_name,
1.29 paf 51: "column not found");
52: return result;
1.53.2.2! paf 53: } else // nameless
! 54: return column_name->as_int();
1.21 paf 55: }
56:
1.53.2.2! paf 57: Table::value_type Table::item(int column) const {
1.21 paf 58: if(valid(fcurrent)) {
1.53.2.2! paf 59: element_type row=at(fcurrent);
! 60: if(column>=0 && column<row->count()) // proper index?
! 61: return row->get(column);
1.21 paf 62: }
63: return 0; // it's OK we don't have row|column, just return nothing
64: }
65:
1.53.2.2! paf 66: bool Table::locate(int column, value_type value) {
1.31 parser 67: int scurrent=fcurrent;
1.53.2.2! paf 68: for(fcurrent=0; fcurrent<count(); fcurrent++) {
! 69: value_type item_value=item(column);
! 70: if(item_value.get() == value.get())
1.21 paf 71: return true;
1.2 paf 72: }
73:
1.31 parser 74: fcurrent=scurrent;
1.21 paf 75: return false;
1.28 paf 76: }
77:
1.53.2.2! paf 78: bool Table::locate(column_type column, value_type value) {
1.29 paf 79: return locate(column_name2index(column, true), value);
1.22 paf 80: }
81:
1.41 paf 82: void Table::offset(bool absolute, int offset) {
1.53.2.2! paf 83: if(count())
! 84: fcurrent=((absolute?0:fcurrent)+offset+count())%count();
1.1 paf 85: }
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