internal static bool AddSuggestionsForValuePossibilities(IntellisenseData.IntellisenseData intellisenseData, TexlNode node)
{
Contracts.AssertValue(intellisenseData);
Contracts.AssertValue(node);
int suggestionCount = intellisenseData.Suggestions.Count() + intellisenseData.SubstringSuggestions.Count();
IntellisenseHelper.AddSuggestionsForRuleScope(intellisenseData);
IntellisenseHelper.AddSuggestionsForTopLevel(intellisenseData, node);
IntellisenseHelper.AddSuggestionsForFunctions(intellisenseData);
intellisenseData.AddSuggestionsForConstantKeywords();
IntellisenseHelper.AddSuggestionsForGlobals(intellisenseData);
intellisenseData.AfterAddSuggestionsForGlobals();
IntellisenseHelper.AddSuggestionsForUnaryOperatorKeyWords(intellisenseData);
intellisenseData.AfterAddSuggestionsForUnaryOperatorKeywords();
IntellisenseHelper.AddSuggestionsForEnums(intellisenseData);
intellisenseData.AddCustomSuggestionsForValuePossibilities();
return(suggestionCount < (intellisenseData.Suggestions.Count() + intellisenseData.SubstringSuggestions.Count()));
}
internal override bool TryAddSuggestionsForNodeKind(IntellisenseData.IntellisenseData intellisenseData)
{
Contracts.AssertValue(intellisenseData);
// For Error Kind, suggest top level values only in the context of a callNode and
// ThisItemProperties only in the context of thisItem.
TexlNode curNode = intellisenseData.CurNode;
// Three methods that implement custom behavior here, one that adds suggestions before
// top level suggestions are added, one after, and one to handle the case where there aren't
// any top level suggestions to add.
if (intellisenseData.AddSuggestionsBeforeTopLevelErrorNodeSuggestions())
{
return(true);
}
if (!IntellisenseHelper.AddSuggestionsForTopLevel(intellisenseData, curNode))
{
intellisenseData.AddAlternativeTopLevelSuggestionsForErrorNode();
}
intellisenseData.AddSuggestionsAfterTopLevelErrorNodeSuggestions();
return(true);
}
internal override bool TryAddSuggestionsForNodeKind(IntellisenseData.IntellisenseData intellisenseData)
{
Contracts.AssertValue(intellisenseData);
TexlNode curNode = intellisenseData.CurNode;
int cursorPos = intellisenseData.CursorPos;
FirstNameNode firstNameNode = curNode.CastFirstName();
Identifier ident = firstNameNode.Ident;
int min = ident.Token.Span.Min;
IdentToken tok = ident.Token;
if (cursorPos < min)
{
// Cursor is before the beginning of the identifier or of the global token if present.
// Suggest possibilities that can result in a value.
IntellisenseHelper.AddSuggestionsForValuePossibilities(intellisenseData, curNode);
intellisenseData.AddAdditionalSuggestionsForKeywordSymbols(curNode);
}
else if (cursorPos <= tok.Span.Lim)
{
// Cursor is part of the identifier or global token if present.
// Get the matching string as a substring from the script so that the whitespace is preserved.
IEnumerable <string> possibleFirstNames = intellisenseData.Binding.GetFirstNames().Select(firstNameInfo => firstNameInfo.Name.Value)
.Union(intellisenseData.Binding.GetGlobalNames().Select(firstNameInfo => firstNameInfo.Name.Value))
.Union(intellisenseData.Binding.GetAliasNames().Select(firstNameInfo => firstNameInfo.Name.Value))
.Union(intellisenseData.SuggestableFirstNames);
int replacementLength = IntellisenseHelper.GetReplacementLength(intellisenseData, tok.Span.Min, tok.Span.Lim, possibleFirstNames);
intellisenseData.SetMatchArea(tok.Span.Min, cursorPos, replacementLength);
intellisenseData.BoundTo = intellisenseData.Binding.ErrorContainer.HasErrors(firstNameNode) ? string.Empty : ident.Name;
if (ident.AtToken != null || tok.Kind == TokKind.At)
{
// Suggest globals if cursor is after '@'.
AddSuggestionsForScopedGlobals(intellisenseData);
}
else if (tok.HasDelimiters && cursorPos > tok.Span.Min)
{
// Suggest top level fields and globals if cursor is after a opening square bracket.
IntellisenseHelper.AddSuggestionsForRuleScope(intellisenseData);
IntellisenseHelper.AddSuggestionsForTopLevel(intellisenseData, curNode);
IntellisenseHelper.AddSuggestionsForGlobals(intellisenseData);
intellisenseData.AddAdditionalSuggestionsForLocalSymbols();
}
else
{
// Suggest value posssibilities otherwise.
IntellisenseHelper.AddSuggestionsForValuePossibilities(intellisenseData, curNode);
}
intellisenseData.AddAdditionalSuggestionsForKeywordSymbols(curNode);
}
else if (IsBracketOpen(tok.Span.Lim, cursorPos, intellisenseData.Script))
{
AddSuggestionsForScopeFields(intellisenseData, intellisenseData.Binding.GetType(firstNameNode));
}
else if (IntellisenseHelper.CanSuggestAfterValue(cursorPos, intellisenseData.Script))
{
// Verify that cursor is after a space after the identifier.
// Suggest binary keywords.
IntellisenseHelper.AddSuggestionsForAfterValue(intellisenseData, intellisenseData.Binding.GetType(firstNameNode));
}
return(true);
}
internal override bool TryAddSuggestionsForNodeKind(IntellisenseData.IntellisenseData intellisenseData)
{
Contracts.AssertValue(intellisenseData);
TexlNode curNode = intellisenseData.CurNode;
int cursorPos = intellisenseData.CursorPos;
CallNode callNode = curNode.CastCall();
int spanMin = callNode.Head.Token.Span.Min;
int spanLim = callNode.Head.Token.Span.Lim;
// Handling the special case for service functions with non-empty namespaces.
// We have to consider the namespace as the begining of the callNode for intellisense purposes.
if (callNode.HeadNode != null)
{
var dottedNode = callNode.HeadNode.AsDottedName();
spanMin = dottedNode.Left.Token.Span.Min;
spanLim = dottedNode.Right.Token.Span.Lim;
}
if (cursorPos < spanMin)
{
// Cursor is before the head
// i.e. "| Filter(....)"
// Suggest possibilities that can result in a value.
IntellisenseHelper.AddSuggestionsForValuePossibilities(intellisenseData, callNode);
}
else if (cursorPos <= spanLim)
{
// Cursor is in the head.
// Suggest function names.
// Get the matching string as a substring from the script so that the whitespace is preserved.
int replacementLength = IntellisenseHelper.GetReplacementLength(intellisenseData, spanMin, spanLim, intellisenseData.Binding.NameResolver.Functions.Select(function => function.Name));
// If we are replacing the full token, also include the opening paren (since this will be provided by the suggestion)
if (replacementLength == spanLim - spanMin)
{
replacementLength += TexlLexer.PunctuatorParenOpen.Length;
}
intellisenseData.SetMatchArea(spanMin, cursorPos, replacementLength);
intellisenseData.BoundTo = intellisenseData.Binding.ErrorContainer.HasErrors(callNode) ? string.Empty : callNode.Head.Name;
IntellisenseHelper.AddSuggestionsForFunctions(intellisenseData);
}
else if (callNode.Token.Span.Lim > cursorPos || callNode.ParenClose == null)
{
// Handling the erroneous case when user enters a space after functionName and cursor is after space.
// Cursor is before the open paren of the function.
// Eg: "Filter | (" AND "Filter | (some Table, some predicate)"
return(false);
}
else
{
// If there was no closed parenthesis we would have an error node.
Contracts.Assert(callNode.ParenClose != null);
if (cursorPos <= callNode.ParenClose.Span.Min)
{
// Cursor position is before the closed parenthesis and there are no arguments.
// If there were arguments FindNode should have returned one of those.
if (intellisenseData.CurFunc != null && intellisenseData.CurFunc.MaxArity > 0)
{
IntellisenseHelper.AddSuggestionsForTopLevel(intellisenseData, callNode);
}
}
else if (IntellisenseHelper.CanSuggestAfterValue(cursorPos, intellisenseData.Script))
{
// Verify that cursor is after a space after the closed parenthesis and
// suggest binary operators.
IntellisenseHelper.AddSuggestionsForAfterValue(intellisenseData, intellisenseData.Binding.GetType(callNode));
}
}
return(true);
}