ClangCodeCompleteResults CodeCompleter::completeSmartPointerCreation(uint line,
uint column,
int funcNameStartLine,
int funcNameStartColumn)
{
if (column <= 1 || funcNameStartLine == -1)
return ClangCodeCompleteResults();
UnsavedFile &file = unsavedFiles.unsavedFile(translationUnit.filePath());
if (!file.hasCharacterAt(line, column - 1, '('))
return ClangCodeCompleteResults();
bool ok;
const uint startPos = file.toUtf8Position(funcNameStartLine, funcNameStartColumn, &ok);
const uint endPos = file.toUtf8Position(line, column - 1, &ok);
Utf8String content = file.fileContent();
const QString oldName = content.mid(startPos, endPos - startPos);
const QString updatedName = tweakName(oldName);
if (updatedName.isEmpty())
return ClangCodeCompleteResults();
column += updatedName.length();
file.replaceAt(endPos + 1, 0, updatedName);
ClangCodeCompleteResults results = completeHelper(line, column);
if (results.isEmpty()) {
column -= updatedName.length();
file.replaceAt(endPos + 1, updatedName.length(), QString());
}
return results;
}
CodeCompletions CodeCompleter::complete(uint line, uint column)
{
neededCorrection_ = CompletionCorrection::NoCorrection;
ClangCodeCompleteResults results = complete(line,
column,
translationUnit.cxUnsavedFiles(),
translationUnit.unsavedFilesCount());
if (results.hasNoResultsForDotCompletion() && hasDotAt(line, column - 1))
results = completeWithArrowInsteadOfDot(line, column);
return toCodeCompletions(results);
}
ClangCodeCompleteResults CodeCompleter::completeWithArrowInsteadOfDot(uint line,
uint column,
uint dotPosition)
{
ClangCodeCompleteResults results;
const bool replaced = unsavedFile().replaceAt(dotPosition,
1,
Utf8StringLiteral("->"));
if (replaced) {
results = completeHelper(line, column + 1);
if (results.hasResults())
neededCorrection_ = CompletionCorrection::DotToArrowCorrection;
filterUnknownContextResults(results, unsavedFile(), line, column+1);
}
return results;
}
ClangCodeCompleteResults CodeCompleter::completeWithArrowInsteadOfDot(uint line, uint column)
{
ClangCodeCompleteResults results;
const SourceLocation location = translationUnit.sourceLocationAtWithoutReparsing(line, column - 1);
const bool replaced = translationUnit.unsavedFile().replaceAt(location.offset(),
1,
Utf8StringLiteral("->"));
if (replaced) {
results = complete(line,
column + 1,
translationUnit.cxUnsavedFiles(),
translationUnit.unsavedFilesCount());
if (results.hasResults())
neededCorrection_ = CompletionCorrection::DotToArrowCorrection;
}
return results;
}
CodeCompletions CodeCompleter::complete(uint line, uint column,
int funcNameStartLine,
int funcNameStartColumn)
{
neededCorrection_ = CompletionCorrection::NoCorrection;
// Check if we have a smart pointer completion and get proper constructor signatures in results.
// Results are empty when it's not a smart pointer or this completion failed.
ClangCodeCompleteResults results = completeSmartPointerCreation(line,
column,
funcNameStartLine,
funcNameStartColumn);
if (results.isNull() || results.isEmpty())
results = completeHelper(line, column);
filterUnknownContextResults(results, unsavedFile(), line, column);
tryDotArrowCorrectionIfNoResults(results, line, column);
return toCodeCompletions(results);
}
void CodeCompleter::tryDotArrowCorrectionIfNoResults(ClangCodeCompleteResults &results,
uint line,
uint column)
{
if (results.hasNoResultsForDotCompletion()) {
const UnsavedFile &theUnsavedFile = unsavedFile();
bool positionIsOk = false;
const uint dotPosition = theUnsavedFile.toUtf8Position(line, column - 1, &positionIsOk);
if (positionIsOk && theUnsavedFile.hasCharacterAt(dotPosition, '.'))
results = completeWithArrowInsteadOfDot(line, column, dotPosition);
}
}