113 lines
2.2 KiB
C++
113 lines
2.2 KiB
C++
// Copyright (C) 2006, Ondra Kamenik
|
|
|
|
// $Id: matrix_parser.cpp 2269 2008-11-23 14:33:22Z michel $
|
|
|
|
#include "parser_exception.hh"
|
|
#include "matrix_parser.hh"
|
|
#include "location.hh"
|
|
#include "matrix_tab.hh"
|
|
#include <cstring>
|
|
|
|
using namespace ogp;
|
|
|
|
/** A global symbol for passing info to the MatrixParser from
|
|
* matrix_parse(). */
|
|
MatrixParser *mparser;
|
|
|
|
/** The declaration of functions defined in matrix_ll.cc and
|
|
* matrix_tab.cc generated from matrix.lex and matrix.y. */
|
|
void *matrix__scan_buffer(char *, size_t);
|
|
void matrix__destroy_buffer(void *);
|
|
int matrix_parse();
|
|
extern ogp::location_type matrix_lloc;
|
|
|
|
void
|
|
MatrixParser::parse(int length, const char *stream)
|
|
{
|
|
// reinitialize the object
|
|
data.clear();
|
|
row_lengths.clear();
|
|
nc = 0;
|
|
// allocate temporary buffer and parse
|
|
char *buffer = new char[length+2];
|
|
strncpy(buffer, stream, length);
|
|
buffer[length] = '\0';
|
|
buffer[length+1] = '\0';
|
|
matrix_lloc.off = 0;
|
|
matrix_lloc.ll = 0;
|
|
void *p = matrix__scan_buffer(buffer, (unsigned int) length+2);
|
|
mparser = this;
|
|
matrix_parse();
|
|
delete [] buffer;
|
|
matrix__destroy_buffer(p);
|
|
}
|
|
|
|
void
|
|
MatrixParser::add_item(double v)
|
|
{
|
|
data.push_back(v);
|
|
if (row_lengths.size() == 0)
|
|
row_lengths.push_back(0);
|
|
(row_lengths.back())++;
|
|
if (row_lengths.back() > nc)
|
|
nc = row_lengths.back();
|
|
}
|
|
|
|
void
|
|
MatrixParser::start_row()
|
|
{
|
|
row_lengths.push_back(0);
|
|
}
|
|
|
|
void
|
|
MatrixParser::error(const char *mes) const
|
|
{
|
|
throw ParserException(mes, matrix_lloc.off);
|
|
}
|
|
|
|
int
|
|
MatrixParser::find_first_non_empty_row(int start) const
|
|
{
|
|
int r = start;
|
|
while (r < (int) row_lengths.size() && row_lengths[r] == 0)
|
|
r++;
|
|
return r;
|
|
}
|
|
|
|
MPIterator
|
|
MatrixParser::begin() const
|
|
{
|
|
MPIterator it(*this);
|
|
return it;
|
|
}
|
|
|
|
MPIterator
|
|
MatrixParser::end() const
|
|
{
|
|
MPIterator it(*this, "end");
|
|
return it;
|
|
}
|
|
|
|
MPIterator::MPIterator(const MatrixParser &mp)
|
|
: p(&mp), i(0), c(0), r(mp.find_first_non_empty_row())
|
|
{
|
|
}
|
|
|
|
MPIterator::MPIterator(const MatrixParser &mp, const char *dummy)
|
|
: p(&mp), i(mp.data.size()), c(0), r(mp.row_lengths.size())
|
|
{
|
|
}
|
|
|
|
MPIterator &
|
|
MPIterator::operator++()
|
|
{
|
|
i++;
|
|
c++;
|
|
if (p->row_lengths[r] <= c)
|
|
{
|
|
c = 0;
|
|
r = p->find_first_non_empty_row(r+1);
|
|
}
|
|
return *this;
|
|
}
|