private static bool NeedAutoinsertCloseBracket(CachingLexer lexer)
{
using (LexerStateCookie.Create(lexer))
{
TokenNodeType typedToken = lexer.TokenType;
// find the leftmost non-closed bracket (including typed) of typed class so that there are no opened brackets of other type
var bracketMatcher = new PsiBracketMatcher();
TokenNodeType tokenType = typedToken;
int leftParenthPos = lexer.CurrentPosition;
do
{
if (tokenType == typedToken && bracketMatcher.IsStackEmpty())
{
leftParenthPos = lexer.CurrentPosition;
}
else if (!bracketMatcher.ProceedStack(tokenType))
{
break;
}
lexer.Advance(-1);
} while ((tokenType = lexer.TokenType) != null);
// Try to find the matched pair bracket
lexer.CurrentPosition = leftParenthPos;
return(!bracketMatcher.FindMatchingBracket(lexer));
}
}
private bool NeedSkipCloseBracket(CachingLexer lexer, char charTyped)
{
// check if the next token matches the typed char
TokenNodeType nextToken = lexer.TokenType;
if ((charTyped == ')' && nextToken != PsiTokenType.RPARENTH) ||
(charTyped == ']' && nextToken != PsiTokenType.RBRACKET) ||
(charTyped == '}' && nextToken != PsiTokenType.RBRACE))
{
return(false);
}
// find the leftmost non-closed bracket (excluding typed) of typed class so that there are no opened brackets of other type
var bracketMatcher = new PsiBracketMatcher();
TokenNodeType searchTokenType = charTyped == ')'
? PsiTokenType.LPARENTH
: charTyped == ']' ? PsiTokenType.LBRACKET : PsiTokenType.LBRACE;
int? leftParenthPos = null;
TokenNodeType tokenType;
for (lexer.Advance(-1); (tokenType = lexer.TokenType) != null; lexer.Advance(-1))
{
if (tokenType == searchTokenType && bracketMatcher.IsStackEmpty())
{
leftParenthPos = lexer.CurrentPosition;
}
else if (!bracketMatcher.ProceedStack(tokenType))
{
break;
}
}
// proceed with search result
if (leftParenthPos == null)
{
return(false);
}
lexer.CurrentPosition = leftParenthPos.Value;
return(bracketMatcher.FindMatchingBracket(lexer));
}