QString AbstractEditorSupport::functionAt(const CppModelManagerInterface *modelManager,
const QString &fileName,
int line, int column)
{
const CPlusPlus::Snapshot snapshot = modelManager->snapshot();
const CPlusPlus::Document::Ptr document = snapshot.document(fileName);
if (!document)
return QString();
if (const CPlusPlus::Symbol *symbol = document->lastVisibleSymbolAt(line, column))
if (const CPlusPlus::Scope *scope = symbol->enclosingScope())
if (const CPlusPlus::Scope *functionScope = scope->enclosingFunction())
if (const CPlusPlus::Symbol *function = functionScope) {
const CPlusPlus::Overview o;
QString rc = o.prettyName(function->name());
// Prepend namespace "Foo::Foo::foo()" up to empty root namespace
for (const CPlusPlus::Symbol *owner = function->enclosingNamespace();
owner; owner = owner->enclosingNamespace()) {
const QString name = o.prettyName(owner->name());
if (name.isEmpty()) {
break;
} else {
rc.prepend(QLatin1String("::"));
rc.prepend(name);
}
}
return rc;
}
return QString();
}
// Inline helper with integer error return codes.
static inline
int getUninitializedVariablesI(const CPlusPlus::Snapshot &snapshot,
const QString &functionName,
const QString &file,
int line,
QStringList *uninitializedVariables)
{
uninitializedVariables->clear();
// Find document
if (snapshot.isEmpty() || functionName.isEmpty() || file.isEmpty() || line < 1)
return 1;
const CPlusPlus::Snapshot::const_iterator docIt = snapshot.find(file);
if (docIt == snapshot.end())
return 2;
const CPlusPlus::Document::Ptr doc = docIt.value();
// Look at symbol at line and find its function. Either it is the
// function itself or some expression/variable.
const CPlusPlus::Symbol *symbolAtLine = doc->lastVisibleSymbolAt(line, 0);
if (!symbolAtLine)
return 4;
// First figure out the function to do a safety name check
// and the innermost scope at cursor position
const CPlusPlus::Function *function = 0;
const CPlusPlus::Scope *innerMostScope = 0;
if (symbolAtLine->isFunction()) {
function = symbolAtLine->asFunction();
if (function->memberCount() == 1) // Skip over function block
if (CPlusPlus::Block *block = function->memberAt(0)->asBlock())
innerMostScope = block;
} else {
if (const CPlusPlus::Scope *functionScope = symbolAtLine->enclosingFunction()) {
function = functionScope->asFunction();
innerMostScope = symbolAtLine->isBlock() ?
symbolAtLine->asBlock() :
symbolAtLine->enclosingBlock();
}
}
if (!function || !innerMostScope)
return 7;
// Compare function names with a bit off fuzz,
// skipping modules from a CDB symbol "lib!foo" or namespaces
// that the code model does not show at this point
CPlusPlus::Overview overview;
const QString name = overview.prettyName(function->name());
if (!functionName.endsWith(name))
return 11;
if (functionName.size() > name.size()) {
const char previousChar = functionName.at(functionName.size() - name.size() - 1).toLatin1();
if (previousChar != ':' && previousChar != '!' )
return 11;
}
// Starting from the innermost block scope, collect declarations.
SeenHash seenHash;
blockRecursion(overview, innerMostScope, line, uninitializedVariables, &seenHash);
return 0;
}
static void blockRecursion(const CPlusPlus::Overview &overview,
const CPlusPlus::Scope *scope,
unsigned line,
QStringList *uninitializedVariables,
SeenHash *seenHash,
int level = 0)
{
// Go backwards in case someone has identical variables in the same scope.
// Fixme: loop variables or similar are currently seen in the outer scope
for (int s = scope->memberCount() - 1; s >= 0; --s){
const CPlusPlus::Symbol *symbol = scope->memberAt(s);
if (symbol->isDeclaration()) {
// Find out about shadowed symbols by bookkeeping
// the already seen occurrences in a hash.
const QString name = overview.prettyName(symbol->name());
SeenHash::iterator it = seenHash->find(name);
if (it == seenHash->end())
it = seenHash->insert(name, 0);
else
++(it.value());
// Is the declaration on or past the current line, that is,
// the variable not initialized.
if (symbol->line() >= line)
uninitializedVariables->push_back(WatchData::shadowedName(name, it.value()));
}
}
// Next block scope.
if (const CPlusPlus::Scope *enclosingScope = scope->enclosingBlock())
blockRecursion(overview, enclosingScope, line, uninitializedVariables, seenHash, level + 1);
}