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New implementation of CheckUndefinedSymbols.

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This commit is contained in:
Roberto Raggi
2010-05-21 15:44:35 +02:00
parent 744d294f3b
commit e6c377c75c
2 changed files with 70 additions and 572 deletions
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565
src/libs/cplusplus/CheckUndefinedSymbols.cpp
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@@ -37,546 +37,97 @@
#include <Scope.h>
#include <AST.h>
#include <QCoreApplication>
#include <QDebug>
using namespace CPlusPlus;
CheckUndefinedSymbols::CheckUndefinedSymbols(Document::Ptr doc)
: ASTVisitor(doc->translationUnit()), _doc(doc)
{ }
CheckUndefinedSymbols::CheckUndefinedSymbols(Document::Ptr doc, const Snapshot &snapshot)
: ASTVisitor(doc->translationUnit()), _context(doc, snapshot)
{
_fileName = doc->fileName();
}
CheckUndefinedSymbols::~CheckUndefinedSymbols()
{ }
void CheckUndefinedSymbols::setGlobalNamespaceBinding(NamespaceBindingPtr globalNamespaceBinding)
QList<Document::DiagnosticMessage> CheckUndefinedSymbols::operator()(AST *ast)
{
_globalNamespaceBinding = globalNamespaceBinding;
_types.clear();
_protocols.clear();
if (_globalNamespaceBinding) {
QSet<NamespaceBinding *> processed;
buildTypeMap(_globalNamespaceBinding.data(), &processed);
}
_diagnosticMessages.clear();
accept(ast);
return _diagnosticMessages;
}
void CheckUndefinedSymbols::operator()(AST *ast)
{ accept(ast); }
QByteArray CheckUndefinedSymbols::templateParameterName(NameAST *ast) const
{
if (ast && ast->name) {
if (const Identifier *id = ast->name->identifier())
return QByteArray::fromRawData(id->chars(), id->size());
}
return QByteArray();
}
QByteArray CheckUndefinedSymbols::templateParameterName(DeclarationAST *ast) const
{
if (ast) {
if (TypenameTypeParameterAST *d = ast->asTypenameTypeParameter())
return templateParameterName(d->name);
else if (TemplateTypeParameterAST *d = ast->asTemplateTypeParameter())
return templateParameterName(d->name);
else if (ParameterDeclarationAST *d = ast->asParameterDeclaration()) {
if (d->symbol) {
if (const Identifier *id = d->symbol->identifier())
return QByteArray::fromRawData(id->chars(), id->size());
}
}
}
return QByteArray();
}
bool CheckUndefinedSymbols::isType(const QByteArray &name) const
{
for (int i = _compoundStatementStack.size() - 1; i != -1; --i) {
Scope *members = _compoundStatementStack.at(i)->symbol->members();
for (unsigned m = 0; m < members->symbolCount(); ++m) {
Symbol *member = members->symbolAt(m);
if (member->isTypedef() && member->isDeclaration()) {
if (const Identifier *id = member->identifier()) {
if (name == id->chars())
return true;
}
}
}
}
for (int i = _templateDeclarationStack.size() - 1; i != - 1; --i) {
TemplateDeclarationAST *templateDeclaration = _templateDeclarationStack.at(i);
for (DeclarationListAST *it = templateDeclaration->template_parameter_list; it; it = it->next) {
DeclarationAST *templateParameter = it->value;
if (templateParameterName(templateParameter) == name)
return true;
}
}
return _types.contains(name);
}
bool CheckUndefinedSymbols::isType(const Identifier *id) const
{
if (! id)
return false;
return isType(QByteArray::fromRawData(id->chars(), id->size()));
}
void CheckUndefinedSymbols::addType(const Name *name)
{
if (! name)
return;
if (const Identifier *id = name->identifier())
_types.insert(QByteArray(id->chars(), id->size()));
}
void CheckUndefinedSymbols::addProtocol(const Name *name)
{
if (!name)
return;
if (const Identifier *id = name->identifier())
_protocols.insert(QByteArray(id->chars(), id->size()));
}
bool CheckUndefinedSymbols::isProtocol(const QByteArray &name) const
{
return _protocols.contains(name);
}
void CheckUndefinedSymbols::buildTypeMap(Class *klass)
{
addType(klass->name());
for (unsigned i = 0; i < klass->memberCount(); ++i) {
buildMemberTypeMap(klass->memberAt(i));
}
}
void CheckUndefinedSymbols::buildMemberTypeMap(Symbol *member)
{
if (member == 0)
return;
if (Class *klass = member->asClass()) {
buildTypeMap(klass);
} else if (Enum *e = member->asEnum()) {
addType(e->name());
} else if (ForwardClassDeclaration *fwd = member->asForwardClassDeclaration()) {
addType(fwd->name());
} else if (Declaration *decl = member->asDeclaration()) {
if (decl->isTypedef())
addType(decl->name());
}
}
void CheckUndefinedSymbols::buildTypeMap(NamespaceBinding *binding, QSet<NamespaceBinding *> *processed)
{
if (! processed->contains(binding)) {
processed->insert(binding);
if (const Identifier *id = binding->identifier()) {
_namespaceNames.insert(QByteArray(id->chars(), id->size()));
}
foreach (Namespace *ns, binding->symbols) {
for (unsigned i = 0; i < ns->memberCount(); ++i) {
Symbol *member = ns->memberAt(i);
if (Class *klass = member->asClass()) {
buildTypeMap(klass);
} else if (Enum *e = member->asEnum()) {
addType(e->name());
} else if (ForwardClassDeclaration *fwd = member->asForwardClassDeclaration()) {
addType(fwd->name());
} else if (NamespaceAlias *alias = member->asNamespaceAlias()) {
addType(alias->name());
} else if (Declaration *decl = member->asDeclaration()) {
if (decl->isTypedef())
addType(decl->name());
} else if (ObjCForwardClassDeclaration *fKlass = member->asObjCForwardClassDeclaration()) {
addType(fKlass->name());
} else if (ObjCClass *klass = member->asObjCClass()) {
addType(klass->name());
for (unsigned i = 0; i < klass->memberCount(); ++i)
buildMemberTypeMap(klass->memberAt(i));
} else if (ObjCForwardProtocolDeclaration *fProto = member->asObjCForwardProtocolDeclaration()) {
addProtocol(fProto->name());
} else if (ObjCProtocol *proto = member->asObjCProtocol()) {
addProtocol(proto->name());
for (unsigned i = 0; i < proto->memberCount(); ++i)
buildMemberTypeMap(proto->memberAt(i));
}
}
}
foreach (NamespaceBinding *childBinding, binding->children) {
buildTypeMap(childBinding, processed);
}
}
}
FunctionDeclaratorAST *CheckUndefinedSymbols::currentFunctionDeclarator() const
{
if (_functionDeclaratorStack.isEmpty())
return 0;
return _functionDeclaratorStack.last();
}
CompoundStatementAST *CheckUndefinedSymbols::compoundStatement() const
{
if (_compoundStatementStack.isEmpty())
return 0;
return _compoundStatementStack.last();
}
bool CheckUndefinedSymbols::visit(FunctionDeclaratorAST *ast)
{
_functionDeclaratorStack.append(ast);
return true;
}
void CheckUndefinedSymbols::endVisit(FunctionDeclaratorAST *)
{
_functionDeclaratorStack.removeLast();
}
bool CheckUndefinedSymbols::visit(TypeofSpecifierAST *)
bool CheckUndefinedSymbols::warning(unsigned line, unsigned column, const QString &text, unsigned length)
{
Document::DiagnosticMessage m(Document::DiagnosticMessage::Warning, _fileName, line, column, text, length);
_diagnosticMessages.append(m);
return false;
}
bool CheckUndefinedSymbols::visit(NamespaceAliasDefinitionAST *ast)
bool CheckUndefinedSymbols::warning(AST *ast, const QString &text)
{
if (const Identifier *id = identifier(ast->namespace_name_token))
_types.insert(QByteArray(id->chars(), id->size()));
const Token &firstToken = tokenAt(ast->firstToken());
const Token &lastToken = tokenAt(ast->lastToken() - 1);
const unsigned length = lastToken.end() - firstToken.begin();
unsigned line = 1, column = 1;
getTokenStartPosition(ast->firstToken(), &line, &column);
warning(line, column, text, length);
return false;
}
bool CheckUndefinedSymbols::visit(UsingDirectiveAST *ast)
{
checkNamespace(ast->name);
return false;
}
bool CheckUndefinedSymbols::visit(SimpleDeclarationAST *ast)
{
return true;
}
bool CheckUndefinedSymbols::visit(NamedTypeSpecifierAST *ast)
{
if (ast->name) {
if (! ast->name->name) {
unsigned line, col;
getTokenStartPosition(ast->firstToken(), &line, &col);
// qWarning() << _doc->fileName() << line << col;
} else if (const Identifier *id = ast->name->name->identifier()) {
if (! isType(id)) {
if (FunctionDeclaratorAST *functionDeclarator = currentFunctionDeclarator()) {
if (functionDeclarator->as_cpp_initializer)
return true;
}
unsigned line, column;
getTokenStartPosition(ast->firstToken(), &line, &column);
Overview oo;
translationUnit()->warning(ast->firstToken(), "`%s' is not a type name",
qPrintable(oo(ast->name->name)));
}
}
}
return true;
}
Scope *enclosingScope = _context.thisDocument()->scopeAt(line, column);
const QList<Symbol *> candidates = _context.lookup(ast->name->name, enclosingScope);
bool CheckUndefinedSymbols::visit(TemplateDeclarationAST *ast)
{
_templateDeclarationStack.append(ast);
return true;
}
void CheckUndefinedSymbols::endVisit(TemplateDeclarationAST *)
{
_templateDeclarationStack.removeLast();
}
bool CheckUndefinedSymbols::visit(ClassSpecifierAST *ast)
{
bool hasQ_OBJECT_CHECK = false;
if (ast->symbol) {
Class *klass = ast->symbol->asClass();
for (unsigned i = 0; i < klass->memberCount(); ++i) {
Symbol *symbol = klass->memberAt(i);
if (symbol->name() && symbol->name()->isNameId()) {
const NameId *nameId = symbol->name()->asNameId();
if (! qstrcmp(nameId->identifier()->chars(), "qt_check_for_QOBJECT_macro")) {
hasQ_OBJECT_CHECK = true;
break;
}
}
}
}
_qobjectStack.append(hasQ_OBJECT_CHECK);
return true;
}
void CheckUndefinedSymbols::endVisit(ClassSpecifierAST *)
{ _qobjectStack.removeLast(); }
bool CheckUndefinedSymbols::qobjectCheck() const
{
if (_qobjectStack.isEmpty())
return false;
return _qobjectStack.last();
}
bool CheckUndefinedSymbols::visit(FunctionDefinitionAST *ast)
{
if (ast->symbol) {
Function *fun = ast->symbol->asFunction();
if ((fun->isSignal() || fun->isSlot()) && ! qobjectCheck()) {
translationUnit()->warning(ast->firstToken(),
"you forgot the Q_OBJECT macro");
}
}
return true;
}
void CheckUndefinedSymbols::endVisit(FunctionDefinitionAST *)
{ }
bool CheckUndefinedSymbols::visit(CompoundStatementAST *ast)
{
_compoundStatementStack.append(ast);
return true;
}
void CheckUndefinedSymbols::endVisit(CompoundStatementAST *)
{
_compoundStatementStack.removeLast();
}
bool CheckUndefinedSymbols::visit(SimpleDeclarationAST *ast)
{
const bool check = qobjectCheck();
for (List<Declaration *> *it = ast->symbols; it; it = it->next) {
Declaration *decl = it->value;
if (Function *fun = decl->type()->asFunctionType()) {
if ((fun->isSignal() || fun->isSlot()) && ! check) {
translationUnit()->warning(ast->firstToken(),
"you forgot the Q_OBJECT macro");
}
}
}
return true;
}
bool CheckUndefinedSymbols::visit(BaseSpecifierAST *base)
{
if (NameAST *nameAST = base->name) {
bool resolvedBaseClassName = false;
if (const Name *name = nameAST->name) {
const Identifier *id = name->identifier();
const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
if (isType(spell))
resolvedBaseClassName = true;
Symbol *ty = 0;
foreach (Symbol *c, candidates) {
if (c->isTypedef() || c->isClass() || c->isEnum()
|| c->isForwardClassDeclaration() || c->isTypenameArgument())
ty = c;
}
if (! resolvedBaseClassName)
translationUnit()->warning(nameAST->firstToken(), "expected class-name");
}
return true;
}
bool CheckUndefinedSymbols::visit(UsingDirectiveAST *ast)
{
if (ast->symbol && ast->symbol->name() && _globalNamespaceBinding) {
const Location loc = Location(ast->symbol);
NamespaceBinding *binding = _globalNamespaceBinding.data();
if (Scope *enclosingNamespaceScope = ast->symbol->enclosingNamespaceScope())
binding = NamespaceBinding::find(enclosingNamespaceScope->owner()->asNamespace(), binding);
if (! binding || ! binding->resolveNamespace(loc, ast->symbol->name())) {
translationUnit()->warning(ast->name->firstToken(),
"expected a namespace");
}
}
return true;
}
bool CheckUndefinedSymbols::visit(QualifiedNameAST *ast)
{
if (ast->name) {
const QualifiedNameId *q = ast->name->asQualifiedNameId();
for (unsigned i = 0; i < q->nameCount() - 1; ++i) {
const Name *name = q->nameAt(i);
if (const Identifier *id = name->identifier()) {
const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
if (! (_namespaceNames.contains(spell) || isType(id))) {
translationUnit()->warning(ast->firstToken(),
"`%s' is not a namespace or class name",
spell.constData());
}
}
}
}
return true;
}
bool CheckUndefinedSymbols::visit(CastExpressionAST *ast)
{
if (ast->lparen_token && ast->type_id && ast->rparen_token && ast->expression) {
if (TypeIdAST *cast_type_id = ast->type_id->asTypeId()) {
SpecifierListAST *type_specifier = cast_type_id->type_specifier_list;
if (! cast_type_id->declarator && type_specifier && ! type_specifier->next &&
type_specifier->value->asNamedTypeSpecifier() && ast->expression &&
ast->expression->asUnaryExpression()) {
// this ast node is ambigious, e.g.
// (a) + b
// it can be parsed as
// ((a) + b)
// or
// (a) (+b)
accept(ast->expression);
return false;
}
}
}
return true;
}
bool CheckUndefinedSymbols::visit(SizeofExpressionAST *ast)
{
if (ast->lparen_token && ast->expression && ast->rparen_token) {
if (TypeIdAST *type_id = ast->expression->asTypeId()) {
SpecifierListAST *type_specifier = type_id->type_specifier_list;
if (! type_id->declarator && type_specifier && ! type_specifier->next &&
type_specifier->value->asNamedTypeSpecifier()) {
// this sizeof expression is ambiguos, e.g.
// sizeof (a)
// `a' can be a typeid or a nested-expression.
return false;
} else if (type_id->declarator
&& type_id->declarator->postfix_declarator_list
&& ! type_id->declarator->postfix_declarator_list->next
&& type_id->declarator->postfix_declarator_list->value->asArrayDeclarator() != 0) {
// this sizeof expression is ambiguos, e.g.
// sizeof(a[10])
// `a' can be a typeid or an expression.
return false;
}
}
}
return true;
}
bool CheckUndefinedSymbols::visit(ObjCClassDeclarationAST *ast)
{
if (NameAST *nameAST = ast->superclass) {
bool resolvedSuperClassName = false;
if (const Name *name = nameAST->name) {
const Identifier *id = name->identifier();
const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
if (isType(spell))
resolvedSuperClassName = true;
}
if (! resolvedSuperClassName) {
translationUnit()->warning(nameAST->firstToken(),
"expected class-name after ':' token");
}
}
return true;
}
bool CheckUndefinedSymbols::visit(ObjCProtocolRefsAST *ast)
{
for (NameListAST *iter = ast->identifier_list; iter; iter = iter->next) {
if (NameAST *nameAST = iter->value) {
bool resolvedProtocolName = false;
if (const Name *name = nameAST->name) {
const Identifier *id = name->identifier();
const QByteArray spell = QByteArray::fromRawData(id->chars(), id->size());
if (isProtocol(spell))
resolvedProtocolName = true;
}
if (!resolvedProtocolName) {
char after;
if (iter == ast->identifier_list)
after = '<';
else
after = ',';
translationUnit()->warning(nameAST->firstToken(), "expected protocol name after '%c' token", after);
}
}
if (! ty)
warning(ast->name, QCoreApplication::translate("CheckUndefinedSymbols", "Expected a type-name"));
}
return false;
}
bool CheckUndefinedSymbols::visit(ObjCPropertyDeclarationAST *ast)
void CheckUndefinedSymbols::checkNamespace(NameAST *name)
{
for (List<ObjCPropertyDeclaration *> *iter = ast->symbols; iter; iter = iter->next) {
if (/*Name *getterName = */ iter->value->getterName()) {
// FIXME: resolve the symbol for the name, and check its signature.
}
if (! name)
return;
if (/*Name *setterName = */ iter->value->setterName()) {
// FIXME: resolve the symbol for the name, and check its signature.
unsigned line, column;
getTokenStartPosition(name->firstToken(), &line, &column);
Scope *enclosingScope = _context.thisDocument()->scopeAt(line, column);
if (ClassOrNamespace *b = _context.lookupType(name->name, enclosingScope)) {
foreach (Symbol *s, b->symbols()) {
if (s->isNamespace())
return;
}
}
return false;
}
bool CheckUndefinedSymbols::visit(QtEnumDeclarationAST *ast)
{
for (NameListAST *iter = ast->enumerator_list; iter; iter = iter->next) {
if (! iter->value)
continue;
if (SimpleNameAST *enumName = iter->value->asSimpleName()) {
if (enumName->name) {
const Identifier *enumId = enumName->name->identifier();
if (!isType(enumId))// ### we're only checking if the enum name is known as a type name, not as an *enum*.
translationUnit()->warning(enumName->firstToken(),
"unknown enum '%s'",
enumId->chars());
}
}
}
return false;
}
bool CheckUndefinedSymbols::visit(QtFlagsDeclarationAST *)
{
// ### TODO
return false;
}
bool CheckUndefinedSymbols::visit(QtPropertyDeclarationAST *)
{
// ### TODO
return false;
const unsigned length = tokenAt(name->lastToken() - 1).end() - tokenAt(name->firstToken()).begin();
warning(line, column, QCoreApplication::translate("CheckUndefinedSymbols", "Expected a namespace-name"), length);
}