public static LocationPreviewItem Create(VsProjectAnalyzer analyzer, FilePreviewItem parent, LocationInfo locationInfo, VariableType type)
{
Debug.Assert(locationInfo.StartColumn >= 1, "Invalid location info (Column)");
Debug.Assert(locationInfo.StartLine >= 1, "Invalid location info (Line)");
var origName = parent?.Engine?.OriginalName;
if (string.IsNullOrEmpty(origName))
{
return(null);
}
var analysis = analyzer.GetAnalysisEntryFromUri(locationInfo.DocumentUri) ??
analyzer.GetAnalysisEntryFromPath(locationInfo.FilePath);
if (analysis == null)
{
return(null);
}
var text = analysis.GetLine(locationInfo.StartLine);
if (string.IsNullOrEmpty(text))
{
return(null);
}
int start, length;
if (!GetSpan(text, origName, locationInfo, out start, out length))
{
// Name does not match exactly, so we might be renaming a prefixed name
var prefix = parent.Engine.PrivatePrefix;
if (string.IsNullOrEmpty(prefix))
{
// No prefix available, so don't rename this
return(null);
}
var newName = parent.Engine.Request.Name;
if (string.IsNullOrEmpty(newName))
{
// No incoming name
Debug.Fail("No incoming name");
return(null);
}
if (!GetSpanWithPrefix(text, origName, locationInfo, prefix, newName, out start, out length))
{
// Not renaming a prefixed name
return(null);
}
}
if (start < 0 || length <= 0)
{
Debug.Fail("Expected valid span");
return(null);
}
var trimText = text.TrimStart(_whitespace);
return(new LocationPreviewItem(
parent,
trimText,
locationInfo.StartLine,
start + 1,
new Span(start - (text.Length - trimText.Length), length)
));
}
public LocationPreviewItem(VsProjectAnalyzer analyzer, FilePreviewItem parent, LocationInfo locationInfo, VariableType type)
{
Debug.Assert(locationInfo.StartColumn >= 1, "Invalid location info (Column)");
Debug.Assert(locationInfo.StartLine >= 1, "Invalid location info (Line)");
_parent = parent;
Type = type;
_text = string.Empty;
var origName = _parent?.Engine?.OriginalName;
if (string.IsNullOrEmpty(origName))
{
return;
}
var analysis = analyzer.GetAnalysisEntryFromUri(locationInfo.DocumentUri) ??
analyzer.GetAnalysisEntryFromPath(locationInfo.FilePath);
if (analysis == null)
{
return;
}
var text = analysis.GetLine(locationInfo.StartLine);
if (string.IsNullOrEmpty(text))
{
return;
}
int start, length;
if (!GetSpan(text, origName, locationInfo, out start, out length))
{
// Name does not match exactly, so we should be renaming a prefixed name
var prefix = parent.Engine.PrivatePrefix;
if (string.IsNullOrEmpty(prefix))
{
// No prefix available, so fail
Debug.Fail("Failed to find '{0}' in '{1}' because we had no private prefix".FormatInvariant(origName, text));
return;
}
var newName = parent.Engine.Request.Name;
if (string.IsNullOrEmpty(newName))
{
// No incoming name
Debug.Fail("No incoming name");
return;
}
if (!GetSpanWithPrefix(text, origName, locationInfo, "_" + prefix, newName, out start, out length))
{
// Not renaming a prefixed name
Debug.Fail("Failed to find '{0}' in '{1}'".FormatInvariant(origName, text));
return;
}
}
if (start < 0 || length <= 0)
{
Debug.Fail("Expected valid span");
return;
}
_text = text.TrimStart(_whitespace);
Line = locationInfo.StartLine;
Column = start + 1;
_span = new Span(start - (text.Length - _text.Length), length);
}