private static AutocompletionContextResult FindAutocompletionContext(IConsoleInput consoleInput)
{
var result = new AutocompletionContextResult {
StartIndex = 0
};
for (int i = Math.Min(consoleInput.CaretIndex, consoleInput.Length - 1); i >= 0; i--)
{
if (consoleInput[i] == FunctionEndSymbol)
{
result.Context = AutocompletionContext.Regular;
break;
}
if (consoleInput[i] == FunctionStartSymbol)
{
result.Context = AutocompletionContext.Method;
result.StartIndex = i + 1;
break;
}
}
return(result);
}
public void Autocomplete(IConsoleInput consoleInput, bool isNextValue)
{
// Which context we in, method or regular.
AutocompletionContextResult contextResult = FindAutocompletionContext(consoleInput);
Type typeToPrefer = null;
if (contextResult.Context == AutocompletionContext.Method)
{
long newCommandLength_whichParamAt_newStartIndex_numParams = FindParamIndexNewStartIndexAndNumParams(consoleInput, contextResult.StartIndex);
int chainEndIndex = FindPreviousLinkEndIndex(consoleInput, contextResult.StartIndex - 1);
if (chainEndIndex >= 0)
{
Stack <string> accessorChain = FindAccessorChain(consoleInput, chainEndIndex);
Member lastChainLink = FindLastChainLinkMember(accessorChain);
if (lastChainLink?.ParameterInfo != null)
{
var numParams = (int)(newCommandLength_whichParamAt_newStartIndex_numParams & 0xff);
ParameterInfo[] overload = null;
for (int i = numParams; i <= lastChainLink.ParameterInfo.Max(x => x.Length); i++)
{
ParameterInfo[] overloadCandidate = lastChainLink.ParameterInfo.FirstOrDefault(x => x.Length == i);
if (overloadCandidate != null)
{
overload = overloadCandidate;
break;
}
}
if (overload != null)
{
var paramIndex = newCommandLength_whichParamAt_newStartIndex_numParams >> 32 & 0xff;
if (overload.Length > paramIndex)
{
typeToPrefer = overload[paramIndex].ParameterType;
}
}
}
}
}
int autocompleteBoundaryIndices = FindBoundaryIndices(consoleInput, consoleInput.CaretIndex);
int startIndex = autocompleteBoundaryIndices & 0xff;
int length = autocompleteBoundaryIndices >> 16;
string command = consoleInput.Substring(startIndex, length);
AutocompletionType completionType = FindAutocompleteType(consoleInput, startIndex);
if (completionType == AutocompletionType.Regular)
{
if (typeToPrefer == null || !string.IsNullOrWhiteSpace(command))
{
FindAutocompleteForEntries(consoleInput, InstancesAndStatics, command, startIndex, isNextValue);
}
else
{
FindAutocompleteForEntries(consoleInput, GetAvailableNamesForType(typeToPrefer), command, startIndex, isNextValue);
}
}
else // Accessor or assignment or method.
{
// We also need to find the value for whatever was before the type accessor.
int chainEndIndex = FindPreviousLinkEndIndex(consoleInput, startIndex - 1);
if (chainEndIndex < 0)
{
return;
}
Stack <string> accessorChain = FindAccessorChain(consoleInput, chainEndIndex);
Member lastChainLink = FindLastChainLinkMember(accessorChain);
// If no types were found, that means we are assigning a new variable.
// Provide all autocomplete entries in that scenario.
if (lastChainLink == null)
{
FindAutocompleteForEntries(consoleInput, InstancesAndStatics, command, startIndex, isNextValue);
return;
}
switch (completionType)
{
case AutocompletionType.Accessor:
MemberCollection autocompleteValues;
if (lastChainLink.IsInstance)
{
_interpreter.InstanceMembers.TryGetValue(lastChainLink.Type, out autocompleteValues);
}
else
{
_interpreter.StaticMembers.TryGetValue(lastChainLink.Type, out autocompleteValues);
}
if (autocompleteValues == null)
{
break;
}
FindAutocompleteForEntries(consoleInput, autocompleteValues.Names, command, startIndex, isNextValue);
break;
case AutocompletionType.Assignment:
FindAutocompleteForEntries(
consoleInput,
GetAvailableNamesForType(lastChainLink.Type),
command,
startIndex,
isNextValue);
break;
}
}
}