/// <summary>
/// Combines a range of symbols into a single symbol.
/// </summary>
/// <param name="startIndex">The start peek index of the first symbol to combine.</param>
/// <param name="endIndex">The end peek index of the last symbol to combine.</param>
/// <param name="text">The text for the new symbol.</param>
/// <param name="type">The type of the new symbol.</param>
public void Combine(int startIndex, int endIndex, string text, SymbolType type)
{
Param.AssertGreaterThanOrEqualToZero(startIndex, "startIndex");
Param.AssertGreaterThanOrEqualTo(endIndex, startIndex, "endIndex");
Param.AssertValidString(text, "text");
Param.Ignore(type);
// Adjust the indexes.
int adjustedStartIndex = startIndex + this.index;
int adjustedEndIndex = endIndex + this.index;
CsLanguageService.Debug.Assert(adjustedStartIndex >= 0 && adjustedStartIndex < this.symbols.Count, "The adjusted start index should be within the symbol list");
CsLanguageService.Debug.Assert(adjustedEndIndex >= 0 && adjustedEndIndex < this.symbols.Count, "The adjusted end index should be within the symbol list");
// Map the new location of the combined symbol.
CodeLocation location = CodeLocation.Join(
this.symbols[adjustedStartIndex].Location, this.symbols[adjustedEndIndex].Location);
// Create the new symbol.
var symbol = new Symbol(text, type, location);
// Replace the first symbol.
this.symbols[adjustedStartIndex] = symbol;
// Remove the rest of the symbols.
++adjustedStartIndex;
if (adjustedStartIndex <= adjustedEndIndex)
{
this.symbols.RemoveRange(adjustedStartIndex, adjustedEndIndex - adjustedStartIndex + 1);
}
}
/// <summary>
/// Joins the locations of the two code units.
/// </summary>
/// <param name="codeUnit1">The first code unit.</param>
/// <param name="location2">The second location.</param>
/// <returns>Returns the joined location.</returns>
internal static CodeLocation JoinLocations(CodeUnit codeUnit1, CodeLocation location2)
{
Param.Ignore(codeUnit1, location2);
if (codeUnit1 == null)
{
if (location2 == null)
{
return(CodeLocation.Empty);
}
return(location2);
}
else if (location2 == null)
{
return(CodeLocation.Join(codeUnit1.Location, null));
}
else
{
return(CodeLocation.Join(codeUnit1.Location, location2));
}
}
