Annotation of parser3/src/main/pa_table.C, revision 1.53.2.10.2.3
1.14 paf 1: /** @file
1.15 paf 2: Parser: table class.
3:
1.53.2.8 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:
1.53.2.10.2.3! (paf 8:: static const char* IDENT_TABLE_C="$Date: 2003/03/19 16:28:09 $";
1.2 paf 9:
1.1 paf 10: #include "pa_table.h"
1.53.2.10.2.1 (paf 11::
1.25 paf 12: #include "pa_exception.h"
1.1 paf 13:
1.53.2.10.2.2 (paf 14:: Table::Table(columns_type acolumns, int initial_rows):
1.53.2.1 paf 15: Array<element_type>(initial_rows),
1.13 paf 16:
1.5 paf 17: fcurrent(0),
18: fcolumns(acolumns),
1.53.2.10.2.2 (paf 19:: name2number(new name2number_hash_class) {
1.1 paf 20:
1.53.2.10.2.3! (paf 21:: if(fcolumns) {
! 22:: size_t fcolumns_count=fcolumns->count();
! 23:: for(size_t i=0; i<fcolumns_count; i++) {
! 24:: const String& name=*fcolumns->unchecked_get(i);
1.53.2.1 paf 25: name2number->put(name, i+1);
1.1 paf 26: }
1.53.2.10.2.3! (paf 27:: }
1.42 paf 28: }
29:
1.53.2.1 paf 30: Table::Table(const Table& src, int offset, int limit) :
31: Array<element_type>(limit/*may be more than needed, no harm done*/),
1.42 paf 32:
1.51 paf 33: fcurrent(0),
1.53.2.1 paf 34: fcolumns(src.fcolumns),
35: name2number(src.name2number) {
1.42 paf 36:
1.53.2.1 paf 37: append(src, offset, limit);
1.2 paf 38: }
39:
1.53.2.10.2.1 (paf 40:: int Table::column_name2index(const String& column_name, bool bark) const {
1.53.2.10.2.2 (paf 41:: if(fcolumns) {// named
42:: int result=name2number->get(column_name)-1; // -1 = column not found
1.29 paf 43: if(bark && result<0)
1.45 paf 44: throw Exception("parser.runtime",
1.53.2.10.2.2 (paf 45:: &column_name,
1.29 paf 46: "column not found");
47: return result;
1.53.2.2 paf 48: } else // nameless
1.53.2.10.2.2 (paf 49:: return column_name.as_int();
1.21 paf 50: }
51:
1.53.2.10.2.3! (paf 52:: const String* Table::item(size_t column) {
1.21 paf 53: if(valid(fcurrent)) {
1.53.2.6 paf 54: element_type row=get(fcurrent);
1.53.2.2 paf 55: if(column>=0 && column<row->count()) // proper index?
1.53.2.10.2.3! (paf 56:: return row->unchecked_get(column);
1.21 paf 57: }
1.53.2.10.2.1 (paf 58:: return 0; // it's OK we don't have row|column, just return nothing
1.21 paf 59: }
60:
1.53.2.10.2.3! (paf 61:: bool Table::locate(size_t column, const String& value) {
! 62:: size_t scurrent=fcurrent;
! 63:: size_t lcount=count();
! 64:: for(fcurrent=0; fcurrent<lcount; fcurrent++) {
1.53.2.10.2.2 (paf 65:: const String* item_value=item(column);
66:: if(*item_value == value)
1.21 paf 67: return true;
1.2 paf 68: }
69:
1.31 parser 70: fcurrent=scurrent;
1.21 paf 71: return false;
1.28 paf 72: }
73:
1.53.2.10.2.1 (paf 74:: bool Table::locate(const String& column, const String& value) {
1.29 paf 75: return locate(column_name2index(column, true), value);
1.22 paf 76: }
77:
1.41 paf 78: void Table::offset(bool absolute, int offset) {
1.53.2.10.2.3! (paf 79:: if(size_t lcount=count())
! 80:: fcurrent=((absolute?0:fcurrent)+offset+lcount)%lcount;
1.1 paf 81: }
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