private void MatchBrace(IBraceStacker pairs, CharPos cp)
{
if (IsOpeningBrace(cp))
{
Add(pairs.Push(cp));
}
else if (pairs.Count(cp.Char) > 0)
{
// check if this is a closing brace matching
// the opening on the stack
BracePos p = pairs.Peek(cp.Char);
if (braceList[p.Brace] == cp.Char)
{
// it does, add it
pairs.Pop(cp.Char);
Add(cp.AsBrace(p.Depth));
}
else
{
// it doesn't; it's an error
this.braceErrors.Add(cp);
}
}
else
{
// closing brace has no opening brace
this.braceErrors.Add(cp);
}
}
private void ExtractFromLine(IBraceStacker pairs, ITextSnapshotLine line, int lineOffset)
{
var lc = new LineChars(line, lineOffset);
CharPos cp = CharPos.Empty;
while (!lc.EndOfLine)
{
if (!this.braceScanner.Extract(lc, ref cp))
{
continue;
}
MatchBrace(pairs, cp);
}
this.LastParsedPosition = line.End;
}
private void ExtractBraces(IBraceStacker pairs, int startOffset, int endOffset, int state)
{
braceScanner.Reset(state);
int lineNum = Snapshot.GetLineNumberFromPosition(startOffset);
while (lineNum < Snapshot.LineCount)
{
var line = Snapshot.GetLineFromLineNumber(lineNum++);
var lineOffset = startOffset > 0 ? startOffset - line.Start : 0;
if (line.Length != 0)
{
ExtractFromLine(pairs, line, lineOffset);
}
startOffset = 0;
this.LastParsedPosition = line.End;
if (line.End >= endOffset)
{
break;
}
}
}
private void MatchBrace(IBraceStacker pairs, CharPos cp)
{
if ( IsOpeningBrace(cp) ) {
Add(pairs.Push(cp));
} else if ( pairs.Count(cp.Char) > 0 ) {
// check if this is a closing brace matching
// the opening on the stack
BracePos p = pairs.Peek(cp.Char);
if ( braceList[p.Brace] == cp.Char ) {
// it does, add it
pairs.Pop(cp.Char);
Add(cp.AsBrace(p.Depth));
} else {
// it doesn't; it's an error
this.braceErrors.Add(cp);
}
} else {
// closing brace has no opening brace
this.braceErrors.Add(cp);
}
}
private void ExtractFromLine(IBraceStacker pairs, ITextSnapshotLine line, int lineOffset)
{
var lc = new LineChars(line, lineOffset);
CharPos cp = CharPos.Empty;
while ( !lc.EndOfLine ) {
if ( !this.braceScanner.Extract(lc, ref cp) )
continue;
MatchBrace(pairs, cp);
}
this.LastParsedPosition = line.End;
}
private void ExtractBraces(IBraceStacker pairs, int startOffset, int endOffset, int state)
{
braceScanner.Reset(state);
int lineNum = Snapshot.GetLineNumberFromPosition(startOffset);
while ( lineNum < Snapshot.LineCount ) {
var line = Snapshot.GetLineFromLineNumber(lineNum++);
var lineOffset = startOffset > 0 ? startOffset - line.Start : 0;
if ( line.Length != 0 ) {
ExtractFromLine(pairs, line, lineOffset);
}
startOffset = 0;
this.LastParsedPosition = line.End;
if ( line.End >= endOffset ) break;
}
}