Mono.TextEditor.TextDocument.OffsetToLineNumber C# (CSharp) Method

		public int OffsetToLineNumber (int offset)
		{
			return splitter.OffsetToLineNumber (offset);
		}
		#endregion

		int FindPrevWordOffset (TextDocument doc, int offset, bool subword)
		{
			int lineNumber = doc.OffsetToLineNumber (offset);
			DocumentLine line = doc.GetLine (lineNumber);
			if (line == null)
				return offset;
			
			int result = offset;
			if (result == line.Offset) {
				line = doc.GetLine (lineNumber - 1);
				if (line != null)
					result = line.Offset + line.Length;
				return result;
			}
			
			CharacterClass current = GetCharacterClass (doc.GetCharAt (result - 1), subword, false);
			
			if (current == CharacterClass.Whitespace && result - 1 > line.Offset) {
				result--;
				current = GetCharacterClass (doc.GetCharAt (result - 2), subword, false);
			}
			
			while (result > line.Offset) {
				CharacterClass prev = GetCharacterClass (doc.GetCharAt (result - 1), subword, false);
				if (prev != current) {
					
					// camelCase and PascalCase handling
					bool camelSkip = false;
					if (prev == CharacterClass.UppercaseLetter && current == CharacterClass.LowercaseLetter) {
						if (result-2 > line.Offset) {
							CharacterClass back2 = GetCharacterClass (doc.GetCharAt (result-2), subword, false);
							if (back2 == CharacterClass.UppercaseLetter)
								result--;
							else
								camelSkip = true;
						}
					}
					
					if (!camelSkip)
						break;
				}
				
				current = prev;
				result--;
			}
			
			return result;
		}