// Finds first contiguous line that has the same prefix as the current line.
// If the prefix is not a comment start prefix, then this function stops at
// the first line with triple quotes or that is empty. It returns the point
// positioned at the start of the first line.
private SnapshotPoint FindParagraphStart(SnapshotPoint point, FillPrefix prefix)
{
var buf = point.Snapshot.TextBuffer;
Regex regexp = null;
if (prefix.IsDocString)
{
regexp = new Regex(prefix + "('''|\"\"\")");
// Check for edge case of being on first line of docstring with quotes.
if (regexp.Match(point.GetContainingLine().GetText()).Success)
{
return(point.GetContainingLine().Start);
}
}
var line = point.GetContainingLine();
var ln_num = line.LineNumber;
var prev_num = ln_num - 1;
if (prev_num < 0)
{
return(line.Start);
}
var prev_txt = point.Snapshot.GetLineFromLineNumber(prev_num).GetText();
while (PrevNotParaStart(prefix, prev_num, ln_num, prev_txt, regexp))
{
ln_num = prev_num;
prev_num--;
if (prev_num < 0)
{
return(new SnapshotPoint(point.Snapshot, 0));
}
prev_txt = point.Snapshot.GetLineFromLineNumber(prev_num).GetText();
}
SnapshotPoint res;
if (!prefix.IsDocString ||
string.IsNullOrEmpty(prev_txt) ||
_startDocStringRegex.IsMatch(prev_txt))
{
// Normally ln is the start for filling, prev line stopped the loop.
res = point.Snapshot.GetLineFromLineNumber(ln_num).Start;
}
else
{
// If we're in a doc string, and prev is not just the triple quotes
// line, and prev is not empty, then we use prev line because it
// has text on it we need to fill. Point is already on prev line.
res = point.Snapshot.GetLineFromLineNumber(prev_num).Start;
}
return(res);
}
// Finds last contiguous line that has the same prefix as the current line. If
// the prefix is not a comment start prefix, then this function stops at the
// last line with triple quotes or that is empty. It returns the point
// positioned at the start of the last line.
private SnapshotPoint FindParagraphEnd(SnapshotPoint point, FillPrefix prefix)
{
Regex regexp = null;
if (prefix.IsDocString)
{
regexp = _endDocStringRegex;
// Check for edge case of being on last line of doc string with quotes.
if (regexp.Match(point.GetContainingLine().GetText()).Success)
{
return(point.GetContainingLine().Start);
}
}
var line = point.GetContainingLine();
var ln_num = line.LineNumber;
var next_num = ln_num + 1;
if (next_num >= point.Snapshot.LineCount)
{
return(line.End);
}
var next_txt = point.Snapshot.GetLineFromLineNumber(next_num).GetText();
while (NextNotParaEnd(prefix, next_num, ln_num, next_txt, regexp))
{
ln_num = next_num;
next_num++;
if (next_num == point.Snapshot.LineCount)
{
break;
}
next_txt = point.Snapshot.GetLineFromLineNumber(next_num).GetText();
}
SnapshotPoint res;
if (!prefix.IsDocString ||
string.IsNullOrEmpty(next_txt) ||
_startDocStringRegex.IsMatch(next_txt))
{
// Normally ln is the last line to fill, next line stopped the loop.
res = point.Snapshot.GetLineFromLineNumber(ln_num).End;
}
else
{
// If we're in a doc string, and next is not just the triple quotes
// line, and next is not empty, then we use next line because it has
// text on it we need to fill. Point is on next line.
res = point.Snapshot.GetLineFromLineNumber(next_num).End;
}
return(res);
}
private bool NextNotParaEnd(FillPrefix prefix, int next_num, int ln_num, string next_txt, Regex regexp)
{
var notBufLastLn = next_num != ln_num;
var notFileDocStrAndHasPrefix = !string.IsNullOrEmpty(prefix.Prefix) && next_txt.StartsWith(prefix.Prefix);
var isFileDocStrAndNotEmptyLine = string.IsNullOrEmpty(prefix.Prefix) && string.IsNullOrEmpty(next_txt);
var notDocStringOrNoTripleQuotesYet = !(prefix.IsDocString && regexp.Match(next_txt).Success);
return(notBufLastLn &&
(notFileDocStrAndHasPrefix || isFileDocStrAndNotEmptyLine) &&
notDocStringOrNoTripleQuotesYet);
}
private bool NextNotParaEnd(FillPrefix prefix, int next_num, int ln_num, string next_txt, Regex regexp)
{
var notBufLastLn = next_num != ln_num;
var notFileDocStrAndHasPrefix = prefix.Prefix != "" && next_txt.IndexOf(prefix.Prefix) == 0;
var isFileDocStrAndNotEmptyLine = prefix.Prefix == "" && next_txt != "";
var notDocStringOrNoTripleQuotesYet = !(prefix.IsDocString && regexp.Match(next_txt).Success);
return(notBufLastLn &&
(notFileDocStrAndHasPrefix || isFileDocStrAndNotEmptyLine) &&
notDocStringOrNoTripleQuotesYet);
}
private bool PrevNotParaStart(FillPrefix prefix, int prev_num, int ln_num, string prev_txt, Regex regexp)
{
var notBufFirstLn = prev_num != ln_num;
var notFileDocStrAndHasPrefix = !string.IsNullOrEmpty(prefix.Prefix) && prev_txt.StartsWith(prefix.Prefix);
var isFileDocStrAndNotEmptyLine = string.IsNullOrEmpty(prefix.Prefix) && !string.IsNullOrEmpty(prev_txt);
var notDocStringOrNoTripleQuotesYet = !(prefix.IsDocString && regexp.Match(prev_txt).Success);
return(notBufFirstLn &&
(notFileDocStrAndHasPrefix || isFileDocStrAndNotEmptyLine) &&
notDocStringOrNoTripleQuotesYet);
}
private bool PrevNotParaStart(FillPrefix prefix, int prev_num, int ln_num, string prev_txt, Regex regexp)
{
var notBufFirstLn = prev_num != ln_num;
var notFileDocStrAndHasPrefix = prefix.Prefix != "" && prev_txt.IndexOf(prefix.Prefix) == 0;
var isFileDocStrAndNotEmptyLine = prefix.Prefix == "" && prev_txt != "";
var notDocStringOrNoTripleQuotesYet = !(prefix.IsDocString && regexp.Match(prev_txt).Success);
return (notBufFirstLn &&
(notFileDocStrAndHasPrefix || isFileDocStrAndNotEmptyLine) &&
notDocStringOrNoTripleQuotesYet);
}
// Finds first contiguous line that has the same prefix as the current line.
// If the prefix is not a comment start prefix, then this function stops at
// the first line with triple quotes or that is empty. It returns the point
// positioned at the start of the first line.
private SnapshotPoint FindParagraphStart(SnapshotPoint point, FillPrefix prefix)
{
var buf = point.Snapshot.TextBuffer;
Regex regexp = null;
if (prefix.IsDocString) {
regexp = new Regex(prefix + "('''|\"\"\")");
// Check for edge case of being on first line of docstring with quotes.
if (regexp.Match(point.GetContainingLine().GetText()).Success) {
return point.GetContainingLine().Start;
}
}
var line = point.GetContainingLine();
var ln_num = line.LineNumber;
var prev_num = ln_num - 1;
if (prev_num < 0) {
return line.Start;
}
var prev_txt = point.Snapshot.GetLineFromLineNumber(prev_num).GetText();
while (PrevNotParaStart(prefix, prev_num, ln_num, prev_txt, regexp)) {
ln_num = prev_num;
prev_num--;
if (prev_num < 0) {
return new SnapshotPoint(point.Snapshot, 0);
}
prev_txt = point.Snapshot.GetLineFromLineNumber(prev_num).GetText();
}
SnapshotPoint res;
if (!prefix.IsDocString ||
_startDocStringRegex.Match(prev_txt).Success ||
prev_txt == "") {
// Normally ln is the start for filling, prev line stopped the loop.
res = point.Snapshot.GetLineFromLineNumber(ln_num).Start;
} else {
// If we're in a doc string, and prev is not just the triple quotes
// line, and prev is not empty, then we use prev line because it
// has text on it we need to fill. Point is already on prev line.
res = point.Snapshot.GetLineFromLineNumber(prev_num).Start;
}
return res;
}
// Finds last contiguous line that has the same prefix as the current line. If
// the prefix is not a comment start prefix, then this function stops at the
// last line with triple quotes or that is empty. It returns the point
// positioned at the start of the last line.
private SnapshotPoint FindParagraphEnd(SnapshotPoint point, FillPrefix prefix)
{
Regex regexp = null;
if (prefix.IsDocString) {
regexp = _endDocStringRegex;
// Check for edge case of being on last line of doc string with quotes.
if (regexp.Match(point.GetContainingLine().GetText()).Success) {
return point.GetContainingLine().Start;
}
}
var line = point.GetContainingLine();
var ln_num = line.LineNumber;
var next_num = ln_num + 1;
if (next_num >= point.Snapshot.LineCount) {
return line.End;
}
var next_txt = point.Snapshot.GetLineFromLineNumber(next_num).GetText();
while (NextNotParaEnd(prefix, next_num, ln_num, next_txt, regexp)) {
ln_num = next_num;
next_num++;
next_txt = point.Snapshot.GetLineFromLineNumber(next_num).GetText();
}
SnapshotPoint res;
if (!prefix.IsDocString ||
_startDocStringRegex.Match(next_txt).Success ||
next_txt == "") {
// Normally ln is the last line to fill, next line stopped the loop.
res = point.Snapshot.GetLineFromLineNumber(ln_num).End;
} else {
// If we're in a doc string, and next is not just the triple quotes
// line, and next is not empty, then we use next line because it has
// text on it we need to fill. Point is on next line.
res = point.Snapshot.GetLineFromLineNumber(next_num).End;
}
return res;
}
private bool NextNotParaEnd(FillPrefix prefix, int next_num, int ln_num, string next_txt, Regex regexp) {
var notBufLastLn = next_num != ln_num;
var notFileDocStrAndHasPrefix = !string.IsNullOrEmpty(prefix.Prefix) && next_txt.StartsWith(prefix.Prefix);
var isFileDocStrAndNotEmptyLine = string.IsNullOrEmpty(prefix.Prefix) && string.IsNullOrEmpty(next_txt);
var notDocStringOrNoTripleQuotesYet = !(prefix.IsDocString && regexp.Match(next_txt).Success);
return (notBufLastLn &&
(notFileDocStrAndHasPrefix || isFileDocStrAndNotEmptyLine) &&
notDocStringOrNoTripleQuotesYet);
}
private bool PrevNotParaStart(FillPrefix prefix, int prev_num, int ln_num, string prev_txt, Regex regexp) {
var notBufFirstLn = prev_num != ln_num;
var notFileDocStrAndHasPrefix = !string.IsNullOrEmpty(prefix.Prefix) && prev_txt.StartsWith(prefix.Prefix);
var isFileDocStrAndNotEmptyLine = string.IsNullOrEmpty(prefix.Prefix) && !string.IsNullOrEmpty(prev_txt);
var notDocStringOrNoTripleQuotesYet = !(prefix.IsDocString && regexp.Match(prev_txt).Success);
return (notBufFirstLn &&
(notFileDocStrAndHasPrefix || isFileDocStrAndNotEmptyLine) &&
notDocStringOrNoTripleQuotesYet);
}
