/**
* Helper function returns -1 if the line is empty else returns the
* amount of whitespace pt is indented by
*/
private static int SkipWhitespace(
EnvDTE.EditPoint pt)
{
int start = pt.DisplayColumn;
while (!pt.AtEndOfLine &&
((pt.GetText(1) == " ") ||
(pt.GetText(1) == "\t")))
{
pt.CharRight(1);
}
if (pt.AtEndOfLine)
{
return -1;
}
else
{
return pt.DisplayColumn-start;
}
}
private static void SkipString(EnvDTE.EditPoint pt, string wanted)
{
string actual = GetTextOnLine(pt, wanted.Length);
if (actual != wanted)
{
throw new System.ArgumentException("Error parsing expected string", wanted);
}
pt.CharRight(wanted.Length);
}
private static void GoToEndOfPreviousWord(
EnvDTE.EditPoint pt)
{
pt.CharLeft(1);
while ((pt.GetText(1) != " ") &&
(pt.GetText(1) != "\t"))
{
pt.CharLeft(1);
}
while ((pt.GetText(1) == " ") ||
(pt.GetText(1) == "\t"))
{
pt.CharLeft(1);
}
pt.CharRight(1);
}
private static void SkipColumns(
EnvDTE.EditPoint pt,
int blockIndentation)
{
int start = pt.DisplayColumn;
int startLine = pt.Line;
while ((pt.DisplayColumn-start) < blockIndentation)
{
pt.CharRight(1);
if (pt.Line != startLine)
{
throw new System.ArgumentException("Error parsing columns");
}
}
if ((pt.DisplayColumn-start) != blockIndentation)
{
throw new System.ArgumentException("Error parsing columns");
}
}
// pre: must be a word before the end of the line moves to the end of
// the word
private static void GoToEndOfNextWord(
EnvDTE.EditPoint pt)
{
while ((pt.GetText(1) == " ") ||
(pt.GetText(1) == "\t"))
{
pt.CharRight(1);
}
while ((!pt.AtEndOfLine) &&
(pt.GetText(1) != " ") &&
(pt.GetText(1) != "\t"))
{
pt.CharRight(1);
}
}