// Parses a typed name map specification, returns true and sets 'map' on success.
// A map specification has the form: [name:type, ...]
private static bool TryParseTypeMap(DTypeSpecLexer lexer, out TypeTree map)
{
Contracts.AssertValue(lexer);
string token;
if (!lexer.TryNextToken(out token) || token != "[")
{
map = default(TypeTree);
return(false);
}
map = new TypeTree();
while (lexer.TryNextToken(out token) && token != "]")
{
string name = token;
if (name.Length >= 2 && name.StartsWith("'") && name.EndsWith("'"))
{
name = TexlLexer.UnescapeName(name);
}
DType type;
if (!DName.IsValidDName(name) ||
!lexer.TryNextToken(out token) ||
token != ":" ||
map.Contains(name) ||
!TryParse(lexer, out type))
{
map = default(TypeTree);
return(false);
}
map = map.SetItem(name, type);
if (!lexer.TryNextToken(out token) || (token != "," && token != "]"))
{
map = default(TypeTree);
return(false);
}
else if (token == "]")
{
return(true);
}
}
if (token != "]")
{
map = default(TypeTree);
return(false);
}
return(true);
}
internal bool SetMatchArea(int startIndex, int endIndex, int replacementLength = -1)
{
Contracts.Assert(0 <= startIndex && startIndex <= endIndex && endIndex <= _script.Length);
// If we have already provided suggestions, we can't set the match area
if (Suggestions.Count > 0 || SubstringSuggestions.Count > 0)
{
return(false);
}
// Trim leading whitespace as there is no point to matching it
while (startIndex < endIndex && string.IsNullOrWhiteSpace(Script.Substring(startIndex, 1)))
{
startIndex++;
}
_replacementStartIndex = startIndex;
_matchingLength = endIndex - startIndex;
_replacementLength = replacementLength < 0 ? _matchingLength : replacementLength;
_matchingStr = TexlLexer.UnescapeName(_script.Substring(startIndex, _matchingLength));
return(true);
}