/// <summary>
/// Could be overwritten to define more complex indenting.
/// </summary>
protected virtual int AutoIndentLine (TextEditor d, int lineNumber, string indentString)
{
string indentation = lineNumber != 0 ? GetIndentation (d, lineNumber - 1) : "";
if (indentation.Length > 0) {
string newLineText = indentation + d.GetLineText (lineNumber).Trim ();
d.ReplaceLine (lineNumber, newLineText);
}
return indentation.Length;
}
/// <summary>
/// returns the whitespaces which are before a non white space character in the line
/// as a string.
/// </summary>
protected string GetIndentation (TextEditor d, int lineNumber)
{
string lineText = d.GetLineText (lineNumber);
StringBuilder whitespaces = new StringBuilder ();
foreach (char ch in lineText) {
if (! Char.IsWhiteSpace (ch))
break;
whitespaces.Append (ch);
}
return whitespaces.ToString ();
}
ICompletionDataList GenerateCompletionData (CodeCompletionContext completionContext, PythonParsedDocument document, TextEditor editor, char completionChar)
{
if (document == null)
return null;
var triggerWord = GetTriggerWord (editor, completionContext);
// Its annoying when the data is poped up during an assignment such as:
// abc = _
if (completionChar == '=' && String.IsNullOrEmpty (triggerWord))
return null;
var triggerLine = editor.GetLineText (completionContext.TriggerLine);
// if completionChar is ' ' and it is not a known completion type
// that we can handle, return as early as possible
if (completionChar == ' ') {
if (!triggerWord.Contains ('.') &&
!triggerLine.StartsWith ("class") &&
!triggerLine.StartsWith ("def") &&
!triggerLine.StartsWith ("from") &&
!triggerLine.StartsWith ("import"))
return null;
}
// "self."
if (document.Module != null && triggerWord.Equals ("self.")) {
var klass = GetClass (document.Module, completionContext.TriggerLine);
if (klass == null)
return null; // nothing to complete, self not in a class
return new CompletionDataList (SelfDotCompletionData (klass));
}
var inFrom = triggerLine.StartsWith ("from ");
var inClass = triggerLine.StartsWith ("class ") || (triggerLine.StartsWith ("class") && completionChar == ' ');
var inDef = triggerLine.StartsWith ("def ") || (triggerLine.StartsWith ("def") && completionChar == ' ');
var parts = triggerLine.Split (' ');
// "from blah "
if (inFrom && parts.Length == 2 && parts [parts.Length-1].Trim ().Length > 0 && completionChar == ' ') {
return new CompletionDataList (new CompletionData[] { new CompletionData ("import") });
}
// "from blah import "
else if (inFrom && parts.Length > 2) {
triggerWord = parts [1] + ".";
return new CompletionDataList (
from ParserItem item in m_site.Database.Find (triggerWord)
where !item.FullName.Substring (triggerWord.Length).Contains ('.')
select CreateCompletionData (item, triggerWord))
;
}
// if we are in a new class line and not to '(' yet
// we cannot complete anything at this time, finish now
if (inClass && parts.Length < 2)
return null;
// if we are in a new def line, the only time we can complete
// is after an equal '='. so ignore space trigger
if (inDef && completionChar == ' ')
return null;
else if (inDef && completionChar == '=')
triggerWord = "";
if (inClass) {
if (completionChar == '(')
triggerWord = "";
else
triggerWord = triggerLine.Substring (triggerLine.LastIndexOf ('(') + 1);
}
// limit the depth of search to number of "." in trigger
// "xml." has depth of 1 so anything matching ^xml. and no more . with match
int depth = 0;
foreach (var c in triggerWord)
if (c == '.')
depth++;
// anything in the sqlite store
if (!String.IsNullOrEmpty (triggerWord)) {
// todo: try to complete on class/module/func/attr data
return new CompletionDataList (
from ParserItem item in m_site.Database.Find (triggerWord, ParserItemType.Any, depth)
select CreateCompletionData (item, triggerWord))
;
}
ParserItemType itemType = String.IsNullOrEmpty (triggerWord) ? ParserItemType.Module : ParserItemType.Any;
return new CompletionDataList (
from ParserItem item in m_site.Database.Find ("", itemType, depth)
select CreateCompletionData (item, triggerWord))
;
}
static string GetTriggerWord (TextEditor editor, CodeCompletionContext completionContext)
{
// Get the line of text for our current line
// and trim off everything after the cursor
var line = editor.GetLineText (completionContext.TriggerLine);
line = line.Substring (0, completionContext.TriggerLineOffset - 1);
// Walk backwards looking for split chars and then trim the
// beginning of the line off
for (int i = line.Length - 1; i >= 0; i--) {
switch (line [i]) {
case ' ':
case '(':
case '\t':
case '=':
return line.Substring (i + 1, line.Length - 1 - i);
default:
break;
}
}
return line;
}
// Snatched from DefaultFormattingStrategy
private string GetIndent (TextEditor d, int lineNumber, int terminateIndex)
{
string lineText = d.GetLineText (lineNumber);
if(terminateIndex > 0)
lineText = lineText.Substring(0, terminateIndex);
StringBuilder whitespaces = new StringBuilder ();
foreach (char ch in lineText) {
if (!char.IsWhiteSpace (ch))
break;
whitespaces.Append (ch);
}
return whitespaces.ToString ();
}
