Annotation of parser3/src/main/pa_table.C, revision 1.53.2.7
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:
1.53.2.7! paf 8: static const char* IDENT_TABLE_C="$Date: 2003/01/30 11:00:41 $";
1.2 paf 9:
1.1 paf 10: #include "pa_table.h"
11: #include "pa_pool.h"
1.25 paf 12: #include "pa_exception.h"
1.1 paf 13:
1.53.2.1 paf 14: Table::Table(
1.53.2.7! paf 15: StringPtr aorigin_string,
1.53.2.4 paf 16: columns_type acolumns,
1.53.2.1 paf 17: int initial_rows):
18: Array<element_type>(initial_rows),
1.13 paf 19:
1.18 paf 20: forigin_string(aorigin_string),
1.5 paf 21: fcurrent(0),
22: fcolumns(acolumns),
1.53.2.1 paf 23: name2number(object_ptr<name2number_hash_class>(new name2number_hash_class)) {
1.1 paf 24:
1.53.2.1 paf 25: if(fcolumns.get())
26: for(int i=0; i<fcolumns->count(); i++) {
1.53.2.2 paf 27: const String& name=*fcolumns->get(i).get();
1.53.2.1 paf 28: name2number->put(name, i+1);
1.1 paf 29: }
1.42 paf 30: }
31:
1.53.2.1 paf 32: Table::Table(const Table& src, int offset, int limit) :
33: Array<element_type>(limit/*may be more than needed, no harm done*/),
1.42 paf 34:
1.53.2.1 paf 35: forigin_string(src.forigin_string),
1.51 paf 36: fcurrent(0),
1.53.2.1 paf 37: fcolumns(src.fcolumns),
38: name2number(src.name2number) {
1.42 paf 39:
1.53.2.1 paf 40: append(src, offset, limit);
1.2 paf 41: }
42:
1.53.2.7! paf 43: int Table::column_name2index(StringPtr column_name, bool bark) const {
1.53.2.1 paf 44: if(fcolumns.get()) {// named
45: int result=name2number->get(*column_name.get())-1; // -1 = column not found
1.29 paf 46: if(bark && result<0)
1.45 paf 47: throw Exception("parser.runtime",
1.53.2.1 paf 48: column_name,
1.29 paf 49: "column not found");
50: return result;
1.53.2.2 paf 51: } else // nameless
52: return column_name->as_int();
1.21 paf 53: }
54:
1.53.2.7! paf 55: StringPtr Table::item(int column) {
1.21 paf 56: if(valid(fcurrent)) {
1.53.2.6 paf 57: element_type row=get(fcurrent);
1.53.2.2 paf 58: if(column>=0 && column<row->count()) // proper index?
59: return row->get(column);
1.21 paf 60: }
61: return 0; // it's OK we don't have row|column, just return nothing
62: }
63:
1.53.2.7! paf 64: bool Table::locate(int column, StringPtr value) {
1.31 parser 65: int scurrent=fcurrent;
1.53.2.2 paf 66: for(fcurrent=0; fcurrent<count(); fcurrent++) {
1.53.2.7! paf 67: StringPtr item_value=item(column);
1.53.2.2 paf 68: if(item_value.get() == value.get())
1.21 paf 69: return true;
1.2 paf 70: }
71:
1.31 parser 72: fcurrent=scurrent;
1.21 paf 73: return false;
1.28 paf 74: }
75:
1.53.2.7! paf 76: bool Table::locate(StringPtr column, StringPtr value) {
1.29 paf 77: return locate(column_name2index(column, true), value);
1.22 paf 78: }
79:
1.41 paf 80: void Table::offset(bool absolute, int offset) {
1.53.2.2 paf 81: if(count())
82: fcurrent=((absolute?0:fcurrent)+offset+count())%count();
1.1 paf 83: }
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