| public static FormatViewLine ( ITextView textView, ITextBuffer textBuffer, int offset, IEditorShell editorShell ) : void | ||
| textView | ITextView | |
| textBuffer | ITextBuffer | |
| offset | int | |
| editorShell | IEditorShell | |
| return | void | |
public static void HandleAutoformat(ITextView textView, IEditorShell editorShell, char typedChar)
{
if (!REditorSettings.AutoFormat)
{
return;
}
if (!REditorSettings.FormatScope && typedChar == '}')
{
return;
}
SnapshotPoint?rPoint = GetCaretPointInBuffer(textView);
if (!rPoint.HasValue)
{
return;
}
var document = REditorDocument.FromTextBuffer(textView.TextBuffer);
var ast = document.EditorTree.AstRoot;
// Make sure we are not formatting damaging the projected range in R Markdown
// which looks like ```{r. 'r' should not separate from {.
var host = ContainedLanguageHost.GetHost(textView, document.TextBuffer, editorShell);
if (host != null && !host.CanFormatLine(textView, document.TextBuffer, document.TextBuffer.CurrentSnapshot.GetLineNumberFromPosition(rPoint.Value)))
{
return;
}
// We don't want to auto-format inside strings
if (ast.IsPositionInsideString(rPoint.Value.Position))
{
return;
}
ITextBuffer subjectBuffer = rPoint.Value.Snapshot.TextBuffer;
if (typedChar.IsLineBreak())
{
// Special case for hitting caret after } and before 'else'. We do want to format
// the construct as '} else {' but if user types Enter after } and we auto-format
// it will look as if the editor just eats the Enter. Instead, we will not be
// autoformatting in this specific case. User can always format either the document
// or select the block and reformat it.
if (!IsBetweenCurlyAndElse(subjectBuffer, rPoint.Value.Position))
{
var scopeStatement = GetFormatScope(textView, subjectBuffer, ast);
// Do not format large scope blocks for performance reasons
if (scopeStatement != null && scopeStatement.Length < 200)
{
FormatOperations.FormatNode(textView, subjectBuffer, editorShell, scopeStatement);
}
else if (CanFormatLine(textView, subjectBuffer, -1))
{
FormatOperations.FormatViewLine(textView, subjectBuffer, -1, editorShell);
}
}
}
else if (typedChar == ';')
{
// Verify we are at the end of the string and not in a middle
// of another string or inside a statement.
ITextSnapshotLine line = subjectBuffer.CurrentSnapshot.GetLineFromPosition(rPoint.Value.Position);
int positionInLine = rPoint.Value.Position - line.Start;
string lineText = line.GetText();
if (positionInLine >= lineText.TrimEnd().Length)
{
FormatOperations.FormatViewLine(textView, subjectBuffer, 0, editorShell);
}
}
else if (typedChar == '}')
{
FormatOperations.FormatCurrentStatement(textView, subjectBuffer, editorShell, limitAtCaret: true, caretOffset: -1);
}
}
public void HandleTyping(char typedChar, int position, IEditorBuffer editorBuffer = null, IIncrementalWhitespaceChangeHandler changeHandler = null)
{
if (!Settings.AutoFormat || (!Settings.FormatScope && typedChar == '}'))
{
return;
}
EditorBuffer = editorBuffer ?? EditorBuffer;
var document = EditorBuffer.GetEditorDocument <IREditorDocument>();
// AST may or may not be ready. Upto the caller to decide if it is worth waiting.
var ast = document.EditorTree.AstRoot;
// Make sure we are not formatting damaging the projected range in R Markdown
// which looks like ```{r. 'r' should not separate from {.
if (!CanFormatContainedLanguageLine(position, typedChar))
{
return;
}
// We don't want to auto-format inside strings
if (ast.IsPositionInsideString(position))
{
return;
}
var fo = new FormatOperations(Services, EditorView, EditorBuffer, _changeHandler);
if (typedChar.IsLineBreak())
{
// Special case for hitting caret after } and before 'else'. We do want to format
// the construct as '} else {' but if user types Enter after } and we auto-format
// it will look as if the editor just eats the Enter. Instead, we will not be
// autoformatting in this specific case. User can always format either the document
// or select the block and reformat it.
if (!IsBetweenCurlyAndElse(position))
{
var scopeStatement = GetFormatScope(position, ast);
// Do not format large scope blocks for performance reasons
if (scopeStatement != null && scopeStatement.Length < 200)
{
fo.FormatNode(scopeStatement);
}
else if (CanFormatLine(position, -1))
{
fo.FormatViewLine(-1);
}
}
}
else if (typedChar == ';')
{
// Verify we are at the end of the string and not in a middle
// of another string or inside a statement.
var line = EditorBuffer.CurrentSnapshot.GetLineFromPosition(position);
var positionInLine = position - line.Start;
var lineText = line.GetText();
if (positionInLine >= lineText.TrimEnd().Length)
{
fo.FormatViewLine(0);
}
}
else if (typedChar == '}')
{
fo.FormatCurrentStatement(limitAtCaret: true, caretOffset: -1);
}
}