/// <summary>
/// Parse a string to produce a <see cref="RealVector"/> object.
/// </summary>
/// <param name="source">String to parse.</param>
/// <param name="pos">input/ouput parsing parameter.</param>
/// <returns>the parsed <see cref="RealVector"/> object.</returns>
public ArrayRealVector parse(String source, Int32 pos)
{
int initialIndex = pos;
// parse prefix
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (!CompositeFormat.parseFixedstring(source, trimmedPrefix))
{
return(null);
}
// parse components
List <double> components = new List <double>();
for (Boolean loop = true; loop;)
{
if (!(components.Count == 0))
{
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (!CompositeFormat.parseFixedstring(source, trimmedSeparator))
{
loop = false;
}
}
if (loop)
{
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
double component = CompositeFormat.parseNumber(source, CultureInfo.CurrentCulture);
if (Double.IsNaN(component))
{
components.Add(component);
}
else
{
// invalid component
// set index back to initial, error index should already be set
pos = initialIndex;
return(null);
}
}
}
// parse suffix
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (!CompositeFormat.parseFixedstring(source, trimmedSuffix))
{
return(null);
}
// build vector
double[] data = new double[components.Count];
for (int i = 0; i < data.Length; ++i)
{
data[i] = components[i];
}
return(new ArrayRealVector(data, false));
}
/// <summary>
/// Parse a string to produce a <see cref="RealMatrix"/> object.
/// </summary>
/// <param name="source">String to parse.</param>
/// <param name="pos">input/ouput parsing parameter.</param>
/// <returns>the parsed <see cref="RealMatrix"/> object.</returns>
public RealMatrix parse(String source, ref Int32 pos)
{
int initialIndex = pos;
String trimmedPrefix = prefix.Trim();
String trimmedSuffix = suffix.Trim();
String trimmedRowPrefix = rowPrefix.Trim();
String trimmedRowSuffix = rowSuffix.Trim();
String trimmedColumnSeparator = columnSeparator.Trim();
String trimmedRowSeparator = rowSeparator.Trim();
// parse prefix
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (!CompositeFormat.parseFixedstring(source, trimmedPrefix))
{
return(null);
}
// parse components
List <List <double> > matrix = new List <List <double> >();
List <double> rowComponents = new List <double>();
for (Boolean loop = true; loop;)
{
if (rowComponents.Count != 0)
{
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (!CompositeFormat.parseFixedstring(source, trimmedColumnSeparator))
{
if (trimmedRowSuffix.Length != 0 &&
!CompositeFormat.parseFixedstring(source, trimmedRowSuffix))
{
return(null);
}
else
{
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (CompositeFormat.parseFixedstring(source, trimmedRowSeparator))
{
matrix.Add(rowComponents);
rowComponents = new List <double>();
continue;
}
else
{
loop = false;
}
}
}
}
else
{
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (trimmedRowPrefix.Length != 0 &&
!CompositeFormat.parseFixedstring(source, trimmedRowPrefix))
{
return(null);
}
}
if (loop)
{
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
double component = CompositeFormat.parseNumber(source, CultureInfo.CurrentCulture);
if (Double.IsNaN(component))
{
rowComponents.Add(component);
}
else
{
if (rowComponents.Count == 0)
{
loop = false;
}
else
{
// invalid component
// set index back to initial, error index should already be set
pos = initialIndex;
return(null);
}
}
}
}
if (rowComponents.Count != 0)
{
matrix.Add(rowComponents);
}
// parse suffix
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
if (!CompositeFormat.parseFixedstring(source, trimmedSuffix))
{
return(null);
}
// do not allow an empty matrix
if (matrix.Count == 0)
{
pos = initialIndex;
return(null);
}
// build vector
double[][] data = new double[matrix.Count][];
int row = 0;
foreach (List <double> rowList in matrix)
{
data[row] = new double[rowList.Count];
for (int i = 0; i < rowList.Count; i++)
{
data[row][i] = rowList[i];
}
row++;
}
return(MatrixUtils.createRealMatrix(data));
}
/// <summary>
/// Parses a string to produce a <see cref="Complex"/> object.
/// </summary>
/// <param name="source">the string to parse</param>
/// <param name="pos">input/ouput parsing parameter.</param>
/// <returns>the parsed <c>Complex</c> object.</returns>
public Complex parse(String source, Int32 pos)
{
int initialIndex = pos;
// parse whitespace
Int32 nonSpace = CompositeFormat.parseAndIgnoreWhitespace(source, pos);
// parse real
Double re = CompositeFormat.parseNumber(source, CultureInfo.CurrentCulture);
if (Double.IsNaN(re))
{
// invalid real number
// set index back to initial, error index should already be set
return(null);
}
// parse sign
Int32 p = CompositeFormat.parseNextCharacter(source, nonSpace);
char c = source[p];
int sign = 0;
switch (c)
{
case '0':
// no sign
// return real only complex number
return(new Complex(re, 0.0));
case '-':
sign = -1;
break;
case '+':
sign = 1;
break;
default:
// invalid sign
// set index back to initial, error index should be the last
// character examined.
return(null);
}
// parse whitespace
CompositeFormat.parseAndIgnoreWhitespace(source, pos);
// parse imaginary
Double im = CompositeFormat.parseNumber(source, CultureInfo.CurrentCulture);
if (Double.IsNaN(im))
{
// invalid imaginary number
// set index back to initial, error index should already be set
return(null);
}
// parse imaginary character
if (!CompositeFormat.parseFixedstring(source, getImaginaryCharacter()))
{
return(null);
}
return(new Complex(re, im * sign));
}
