//===---------------- SemaCodeComplete.cpp - Code Completion ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the code-completion semantic actions.
//
//===----------------------------------------------------------------------===//
#include "Sema.h"
#include "clang/Sema/CodeCompleteConsumer.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprObjC.h"
#include "clang/Lex/MacroInfo.h"
#include "clang/Lex/Preprocessor.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringExtras.h"
#include <list>
#include <map>
#include <vector>
using namespace clang;
namespace {
/// \brief A container of code-completion results.
class ResultBuilder {
public:
/// \brief The type of a name-lookup filter, which can be provided to the
/// name-lookup routines to specify which declarations should be included in
/// the result set (when it returns true) and which declarations should be
/// filtered out (returns false).
typedef bool (ResultBuilder::*LookupFilter)(NamedDecl *) const;
typedef CodeCompleteConsumer::Result Result;
private:
/// \brief The actual results we have found.
std::vector<Result> Results;
/// \brief A record of all of the declarations we have found and placed
/// into the result set, used to ensure that no declaration ever gets into
/// the result set twice.
llvm::SmallPtrSet<Decl*, 16> AllDeclsFound;
typedef std::pair<NamedDecl *, unsigned> DeclIndexPair;
/// \brief An entry in the shadow map, which is optimized to store
/// a single (declaration, index) mapping (the common case) but
/// can also store a list of (declaration, index) mappings.
class ShadowMapEntry {
typedef llvm::SmallVector<DeclIndexPair, 4> DeclIndexPairVector;
/// \brief Contains either the solitary NamedDecl * or a vector
/// of (declaration, index) pairs.
llvm::PointerUnion<NamedDecl *, DeclIndexPairVector*> DeclOrVector;
/// \brief When the entry contains a single declaration, this is
/// the index associated with that entry.
unsigned SingleDeclIndex;
public:
ShadowMapEntry() : DeclOrVector(), SingleDeclIndex(0) { }
void Add(NamedDecl *ND, unsigned Index) {
if (DeclOrVector.isNull()) {
// 0 - > 1 elements: just set the single element information.
DeclOrVector = ND;
SingleDeclIndex = Index;
return;
}
if (NamedDecl *PrevND = DeclOrVector.dyn_cast<NamedDecl *>()) {
// 1 -> 2 elements: create the vector of results and push in the
// existing declaration.
DeclIndexPairVector *Vec = new DeclIndexPairVector;
Vec->push_back(DeclIndexPair(PrevND, SingleDeclIndex));
DeclOrVector = Vec;
}
// Add the new element to the end of the vector.
DeclOrVector.get<DeclIndexPairVector*>()->push_back(
DeclIndexPair(ND, Index));
}
void Destroy() {
if (DeclIndexPairVector *Vec
= DeclOrVector.dyn_cast<DeclIndexPairVector *>()) {
delete Vec;
DeclOrVector = ((NamedDecl *)0);
}
}
// Iteration.
class iterator;
iterator begin() const;
iterator end() const;
};
/// \brief A mapping from declaration names to the declarations that have
/// this name within a particular scope and their index within the list of
/// results.
typedef llvm::DenseMap<DeclarationName, ShadowMapEntry> ShadowMap;
/// \brief The semantic analysis object for which results are being
/// produced.
Sema &SemaRef;
/// \brief If non-NULL, a filter function used to remove any code-completion
/// results that are not desirable.
LookupFilter Filter;
/// \brief A list of shadow maps, which is used to model name hiding at
/// different levels of, e.g., the inheritance hierarchy.
std::list<ShadowMap> ShadowMaps;
public:
explicit ResultBuilder(Sema &SemaRef, LookupFilter Filter = 0)
: SemaRef(SemaRef), Filter(Filter) { }
/// \brief Set the filter used for code-completion results.
void setFilter(LookupFilter Filter) {
this->Filter = Filter;
}
typedef std::vector<Result>::iterator iterator;
iterator begin() { return Results.begin(); }
iterator end() { return Results.end(); }
Result *data() { return Results.empty()? 0 : &Results.front(); }
unsigned size() const { return Results.size(); }
bool empty() const { return Results.empty(); }
/// \brief Add a new result to this result set (if it isn't already in one
/// of the shadow maps), or replace an existing result (for, e.g., a
/// redeclaration).
///
/// \param R the result to add (if it is unique).
///
/// \param R the context in which this result will be named.
void MaybeAddResult(Result R, DeclContext *CurContext = 0);
/// \brief Enter into a new scope.
void EnterNewScope();
/// \brief Exit from the current scope.
void ExitScope();
/// \brief Ignore this declaration, if it is seen again.
void Ignore(Decl *D) { AllDeclsFound.insert(D->getCanonicalDecl()); }
/// \name Name lookup predicates
///
/// These predicates can be passed to the name lookup functions to filter the
/// results of name lookup. All of the predicates have the same type, so that
///
//@{
bool IsOrdinaryName(NamedDecl *ND) const;
bool IsNestedNameSpecifier(NamedDecl *ND) const;
bool IsEnum(NamedDecl *ND) const;
bool IsClassOrStruct(NamedDecl *ND) const;
bool IsUnion(NamedDecl *ND) const;
bool IsNamespace(NamedDecl *ND) const;
bool IsNamespaceOrAlias(NamedDecl *ND) const;
bool IsType(NamedDecl *ND) const;
bool IsMember(NamedDecl *ND) const;
//@}
};
}
class ResultBuilder::ShadowMapEntry::iterator {
llvm::PointerUnion<NamedDecl*, const DeclIndexPair*> DeclOrIterator;
unsigned SingleDeclIndex;
public:
typedef DeclIndexPair value_type;
typedef value_type reference;
typedef std::ptrdiff_t difference_type;
typedef std::input_iterator_tag iterator_category;
class pointer {
DeclIndexPair Value;
public:
pointer(const DeclIndexPair &Value) : Value(Value) { }
const DeclIndexPair *operator->() const {
return &Value;
}
};
iterator() : DeclOrIterator((NamedDecl *)0), SingleDeclIndex(0) { }
iterator(NamedDecl *SingleDecl, unsigned Index)
: DeclOrIterator(SingleDecl), SingleDeclIndex(Index) { }
iterator(const DeclIndexPair *Iterator)
: DeclOrIterator(Iterator), SingleDeclIndex(0) { }
iterator &operator++() {
if (DeclOrIterator.is<NamedDecl *>()) {
DeclOrIterator = (NamedDecl *)0;
SingleDeclIndex = 0;
return *this;
}
const DeclIndexPair *I = DeclOrIterator.get<const DeclIndexPair*>();
++I;
DeclOrIterator = I;
return *this;
}
iterator operator++(int) {
iterator tmp(*this);
++(*this);
return tmp;
}
reference operator*() const {
if (NamedDecl *ND = DeclOrIterator.dyn_cast<NamedDecl *>())
return reference(ND, SingleDeclIndex);
return *DeclOrIterator.get<const DeclIndexPair*>();
}
pointer operator->() const {
return pointer(**this);
}
friend bool operator==(const iterator &X, const iterator &Y) {
return X.DeclOrIterator.getOpaqueValue()
== Y.DeclOrIterator.getOpaqueValue() &&
X.SingleDeclIndex == Y.SingleDeclIndex;
}
friend bool operator!=(const iterator &X, const iterator &Y) {
return !(X == Y);
}
};
ResultBuilder::ShadowMapEntry::iterator
ResultBuilder::ShadowMapEntry::begin() const {
if (DeclOrVector.isNull())
return iterator();
if (NamedDecl *ND = DeclOrVector.dyn_cast<NamedDecl *>())
return iterator(ND, SingleDeclIndex);
return iterator(DeclOrVector.get<DeclIndexPairVector *>()->begin());
}
ResultBuilder::ShadowMapEntry::iterator
ResultBuilder::ShadowMapEntry::end() const {
if (DeclOrVector.is<NamedDecl *>() || DeclOrVector.isNull())
return iterator();
return iterator(DeclOrVector.get<DeclIndexPairVector *>()->end());
}
/// \brief Determines whether the given hidden result could be found with
/// some extra work, e.g., by qualifying the name.
///
/// \param Hidden the declaration that is hidden by the currenly \p Visible
/// declaration.
///
/// \param Visible the declaration with the same name that is already visible.
///
/// \returns true if the hidden result can be found by some mechanism,
/// false otherwise.
static bool canHiddenResultBeFound(const LangOptions &LangOpts,
NamedDecl *Hidden, NamedDecl *Visible) {
// In C, there is no way to refer to a hidden name.
if (!LangOpts.CPlusPlus)
return false;
DeclContext *HiddenCtx = Hidden->getDeclContext()->getLookupContext();
// There is no way to qualify a name declared in a function or method.
if (HiddenCtx->isFunctionOrMethod())
return false;
return HiddenCtx != Visible->getDeclContext()->getLookupContext();
}
/// \brief Compute the qualification required to get from the current context
/// (\p CurContext) to the target context (\p TargetContext).
///
/// \param Context the AST context in which the qualification will be used.
///
/// \param CurContext the context where an entity is being named, which is
/// typically based on the current scope.
///
/// \param TargetContext the context in which the named entity actually
/// resides.
///
/// \returns a nested name specifier that refers into the target context, or
/// NULL if no qualification is needed.
static NestedNameSpecifier *
getRequiredQualification(ASTContext &Context,
DeclContext *CurContext,
DeclContext *TargetContext) {
llvm::SmallVector<DeclContext *, 4> TargetParents;
for (DeclContext *CommonAncestor = TargetContext;
CommonAncestor && !CommonAncestor->Encloses(CurContext);
CommonAncestor = CommonAncestor->getLookupParent()) {
if (CommonAncestor->isTransparentContext() ||
CommonAncestor->isFunctionOrMethod())
continue;
TargetParents.push_back(CommonAncestor);
}
NestedNameSpecifier *Result = 0;
while (!TargetParents.empty()) {
DeclContext *Parent = TargetParents.back();
TargetParents.pop_back();
if (NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(Parent))
Result = NestedNameSpecifier::Create(Context, Result, Namespace);
else if (TagDecl *TD = dyn_cast<TagDecl>(Parent))
Result = NestedNameSpecifier::Create(Context, Result,
false,
Context.getTypeDeclType(TD).getTypePtr());
else
assert(Parent->isTranslationUnit());
}
return Result;
}
void ResultBuilder::MaybeAddResult(Result R, DeclContext *CurContext) {
assert(!ShadowMaps.empty() && "Must enter into a results scope");
if (R.Kind != Result::RK_Declaration) {
// For non-declaration results, just add the result.
Results.push_back(R);
return;
}
// Skip unnamed entities.
if (!R.Declaration->getDeclName())
return;
// Look through using declarations.
if (UsingShadowDecl *Using = dyn_cast<UsingShadowDecl>(R.Declaration))
MaybeAddResult(Result(Using->getTargetDecl(), R.Rank, R.Qualifier),
CurContext);
Decl *CanonDecl = R.Declaration->getCanonicalDecl();
unsigned IDNS = CanonDecl->getIdentifierNamespace();
// Friend declarations and declarations introduced due to friends are never
// added as results.
if (isa<FriendDecl>(CanonDecl) ||
(IDNS & (Decl::IDNS_OrdinaryFriend | Decl::IDNS_TagFriend)))
return;
// Class template (partial) specializations are never added as results.
if (isa<ClassTemplateSpecializationDecl>(CanonDecl) ||
isa<ClassTemplatePartialSpecializationDecl>(CanonDecl))
return;
// Using declarations themselves are never added as results.
if (isa<UsingDecl>(CanonDecl))
return;
if (const IdentifierInfo *Id = R.Declaration->getIdentifier()) {
// __va_list_tag is a freak of nature. Find it and skip it.
if (Id->isStr("__va_list_tag") || Id->isStr("__builtin_va_list"))
return;
// Filter out names reserved for the implementation (C99 7.1.3,
// C++ [lib.global.names]). Users don't need to see those.
//
// FIXME: Add predicate for this.
if (Id->getLength() >= 2) {
const char *Name = Id->getNameStart();
if (Name[0] == '_' &&
(Name[1] == '_' || (Name[1] >= 'A' && Name[1] <= 'Z')))
return;
}
}
// C++ constructors are never found by name lookup.
if (isa<CXXConstructorDecl>(CanonDecl))
return;
// Filter out any unwanted results.
if (Filter && !(this->*Filter)(R.Declaration))
return;
ShadowMap &SMap = ShadowMaps.back();
ShadowMapEntry::iterator I, IEnd;
ShadowMap::iterator NamePos = SMap.find(R.Declaration->getDeclName());
if (NamePos != SMap.end()) {
I = NamePos->second.begin();
IEnd = NamePos->second.end();
}
for (; I != IEnd; ++I) {
NamedDecl *ND = I->first;
unsigned Index = I->second;
if (ND->getCanonicalDecl() == CanonDecl) {
// This is a redeclaration. Always pick the newer declaration.
Results[Index].Declaration = R.Declaration;
// Pick the best rank of the two.
Results[Index].Rank = std::min(Results[Index].Rank, R.Rank);
// We're done.
return;
}
}
// This is a new declaration in this scope. However, check whether this
// declaration name is hidden by a similarly-named declaration in an outer
// scope.
std::list<ShadowMap>::iterator SM, SMEnd = ShadowMaps.end();
--SMEnd;
for (SM = ShadowMaps.begin(); SM != SMEnd; ++SM) {
ShadowMapEntry::iterator I, IEnd;
ShadowMap::iterator NamePos = SM->find(R.Declaration->getDeclName());
if (NamePos != SM->end()) {
I = NamePos->second.begin();
IEnd = NamePos->second.end();
}
for (; I != IEnd; ++I) {
// A tag declaration does not hide a non-tag declaration.
if (I->first->getIdentifierNamespace() == Decl::IDNS_Tag &&
(IDNS & (Decl::IDNS_Member | Decl::IDNS_Ordinary |
Decl::IDNS_ObjCProtocol)))
continue;
// Protocols are in distinct namespaces from everything else.
if (((I->first->getIdentifierNamespace() & Decl::IDNS_ObjCProtocol)
|| (IDNS & Decl::IDNS_ObjCProtocol)) &&
I->first->getIdentifierNamespace() != IDNS)
continue;
// The newly-added result is hidden by an entry in the shadow map.
if (canHiddenResultBeFound(SemaRef.getLangOptions(), R.Declaration,
I->first)) {
// Note that this result was hidden.
R.Hidden = true;
R.QualifierIsInformative = false;
if (!R.Qualifier)
R.Qualifier = getRequiredQualification(SemaRef.Context,
CurContext,
R.Declaration->getDeclContext());
} else {
// This result was hidden and cannot be found; don't bother adding
// it.
return;
}
break;
}
}
// Make sure that any given declaration only shows up in the result set once.
if (!AllDeclsFound.insert(CanonDecl))
return;
// If the filter is for nested-name-specifiers, then this result starts a
// nested-name-specifier.
if ((Filter == &ResultBuilder::IsNestedNameSpecifier) ||
(Filter == &ResultBuilder::IsMember &&
isa<CXXRecordDecl>(R.Declaration) &&
cast<CXXRecordDecl>(R.Declaration)->isInjectedClassName()))
R.StartsNestedNameSpecifier = true;
// If this result is supposed to have an informative qualifier, add one.
if (R.QualifierIsInformative && !R.Qualifier &&
!R.StartsNestedNameSpecifier) {
DeclContext *Ctx = R.Declaration->getDeclContext();
if (NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(Ctx))
R.Qualifier = NestedNameSpecifier::Create(SemaRef.Context, 0, Namespace);
else if (TagDecl *Tag = dyn_cast<TagDecl>(Ctx))
R.Qualifier = NestedNameSpecifier::Create(SemaRef.Context, 0, false,
SemaRef.Context.getTypeDeclType(Tag).getTypePtr());
else
R.QualifierIsInformative = false;
}
// Insert this result into the set of results and into the current shadow
// map.
SMap[R.Declaration->getDeclName()].Add(R.Declaration, Results.size());
Results.push_back(R);
}
/// \brief Enter into a new scope.
void ResultBuilder::EnterNewScope() {
ShadowMaps.push_back(ShadowMap());
}
/// \brief Exit from the current scope.
void ResultBuilder::ExitScope() {
for (ShadowMap::iterator E = ShadowMaps.back().begin(),
EEnd = ShadowMaps.back().end();
E != EEnd;
++E)
E->second.Destroy();
ShadowMaps.pop_back();
}
/// \brief Determines whether this given declaration will be found by
/// ordinary name lookup.
bool ResultBuilder::IsOrdinaryName(NamedDecl *ND) const {
unsigned IDNS = Decl::IDNS_Ordinary;
if (SemaRef.getLangOptions().CPlusPlus)
IDNS |= Decl::IDNS_Tag;
return ND->getIdentifierNamespace() & IDNS;
}
/// \brief Determines whether the given declaration is suitable as the
/// start of a C++ nested-name-specifier, e.g., a class or namespace.
bool ResultBuilder::IsNestedNameSpecifier(NamedDecl *ND) const {
// Allow us to find class templates, too.
if (ClassTemplateDecl *ClassTemplate = dyn_cast<ClassTemplateDecl>(ND))
ND = ClassTemplate->getTemplatedDecl();
return SemaRef.isAcceptableNestedNameSpecifier(ND);
}
/// \brief Determines whether the given declaration is an enumeration.
bool ResultBuilder::IsEnum(NamedDecl *ND) const {
return isa<EnumDecl>(ND);
}
/// \brief Determines whether the given declaration is a class or struct.
bool ResultBuilder::IsClassOrStruct(NamedDecl *ND) const {
// Allow us to find class templates, too.
if (ClassTemplateDecl *ClassTemplate = dyn_cast<ClassTemplateDecl>(ND))
ND = ClassTemplate->getTemplatedDecl();
if (RecordDecl *RD = dyn_cast<RecordDecl>(ND))
return RD->getTagKind() == TagDecl::TK_class ||
RD->getTagKind() == TagDecl::TK_struct;
return false;
}
/// \brief Determines whether the given declaration is a union.
bool ResultBuilder::IsUnion(NamedDecl *ND) const {
// Allow us to find class templates, too.
if (ClassTemplateDecl *ClassTemplate = dyn_cast<ClassTemplateDecl>(ND))
ND = ClassTemplate->getTemplatedDecl();
if (RecordDecl *RD = dyn_cast<RecordDecl>(ND))
return RD->getTagKind() == TagDecl::TK_union;
return false;
}
/// \brief Determines whether the given declaration is a namespace.
bool ResultBuilder::IsNamespace(NamedDecl *ND) const {
return isa<NamespaceDecl>(ND);
}
/// \brief Determines whether the given declaration is a namespace or
/// namespace alias.
bool ResultBuilder::IsNamespaceOrAlias(NamedDecl *ND) const {
return isa<NamespaceDecl>(ND) || isa<NamespaceAliasDecl>(ND);
}
/// \brief Determines whether the given declaration is a type.
bool ResultBuilder::IsType(NamedDecl *ND) const {
return isa<TypeDecl>(ND);
}
/// \brief Determines which members of a class should be visible via
/// "." or "->". Only value declarations, nested name specifiers, and
/// using declarations thereof should show up.
bool ResultBuilder::IsMember(NamedDecl *ND) const {
if (UsingShadowDecl *Using = dyn_cast<UsingShadowDecl>(ND))
ND = Using->getTargetDecl();
return isa<ValueDecl>(ND) || isa<FunctionTemplateDecl>(ND) ||
isa<ObjCPropertyDecl>(ND);
}
// Find the next outer declaration context corresponding to this scope.
static DeclContext *findOuterContext(Scope *S) {
for (S = S->getParent(); S; S = S->getParent())
if (S->getEntity())
return static_cast<DeclContext *>(S->getEntity())->getPrimaryContext();
return 0;
}
/// \brief Collect the results of searching for members within the given
/// declaration context.
///
/// \param Ctx the declaration context from which we will gather results.
///
/// \param Rank the rank given to results in this declaration context.
///
/// \param Visited the set of declaration contexts that have already been
/// visited. Declaration contexts will only be visited once.
///
/// \param Results the result set that will be extended with any results
/// found within this declaration context (and, for a C++ class, its bases).
///
/// \param InBaseClass whether we are in a base class.
///
/// \returns the next higher rank value, after considering all of the
/// names within this declaration context.
static unsigned CollectMemberLookupResults(DeclContext *Ctx,
unsigned Rank,
DeclContext *CurContext,
llvm::SmallPtrSet<DeclContext *, 16> &Visited,
ResultBuilder &Results,
bool InBaseClass = false) {
// Make sure we don't visit the same context twice.
if (!Visited.insert(Ctx->getPrimaryContext()))
return Rank;
// Enumerate all of the results in this context.
typedef CodeCompleteConsumer::Result Result;
Results.EnterNewScope();
for (DeclContext *CurCtx = Ctx->getPrimaryContext(); CurCtx;
CurCtx = CurCtx->getNextContext()) {
for (DeclContext::decl_iterator D = CurCtx->decls_begin(),
DEnd = CurCtx->decls_end();
D != DEnd; ++D) {
if (NamedDecl *ND = dyn_cast<NamedDecl>(*D))
Results.MaybeAddResult(Result(ND, Rank, 0, InBaseClass), CurContext);
// Visit transparent contexts inside this context.
if (DeclContext *InnerCtx = dyn_cast<DeclContext>(*D)) {
if (InnerCtx->isTransparentContext())
CollectMemberLookupResults(InnerCtx, Rank, CurContext, Visited,
Results, InBaseClass);
}
}
}
// Traverse the contexts of inherited classes.
if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(Ctx)) {
for (CXXRecordDecl::base_class_iterator B = Record->bases_begin(),
BEnd = Record->bases_end();
B != BEnd; ++B) {
QualType BaseType = B->getType();
// Don't look into dependent bases, because name lookup can't look
// there anyway.
if (BaseType->isDependentType())
continue;
const RecordType *Record = BaseType->getAs<RecordType>();
if (!Record)
continue;
// FIXME: It would be nice to be able to determine whether referencing
// a particular member would be ambiguous. For example, given
//
// struct A { int member; };
// struct B { int member; };
// struct C : A, B { };
//
// void f(C *c) { c->### }
// accessing 'member' would result in an ambiguity. However, code
// completion could be smart enough to qualify the member with the
// base class, e.g.,
//
// c->B::member
//
// or
//
// c->A::member
// Collect results from this base class (and its bases).
CollectMemberLookupResults(Record->getDecl(), Rank, CurContext, Visited,
Results, /*InBaseClass=*/true);
}
}
// FIXME: Look into base classes in Objective-C!
Results.ExitScope();
return Rank + 1;
}
/// \brief Collect the results of searching for members within the given
/// declaration context.
///
/// \param Ctx the declaration context from which we will gather results.
///
/// \param InitialRank the initial rank given to results in this declaration
/// context. Larger rank values will be used for, e.g., members found in
/// base classes.
///
/// \param Results the result set that will be extended with any results
/// found within this declaration context (and, for a C++ class, its bases).
///
/// \returns the next higher rank value, after considering all of the
/// names within this declaration context.
static unsigned CollectMemberLookupResults(DeclContext *Ctx,
unsigned InitialRank,
DeclContext *CurContext,
ResultBuilder &Results) {
llvm::SmallPtrSet<DeclContext *, 16> Visited;
return CollectMemberLookupResults(Ctx, InitialRank, CurContext, Visited,
Results);
}
/// \brief Collect the results of searching for declarations within the given
/// scope and its parent scopes.
///
/// \param S the scope in which we will start looking for declarations.
///
/// \param InitialRank the initial rank given to results in this scope.
/// Larger rank values will be used for results found in parent scopes.
///
/// \param CurContext the context from which lookup results will be found.
///
/// \param Results the builder object that will receive each result.
static unsigned CollectLookupResults(Scope *S,
TranslationUnitDecl *TranslationUnit,
unsigned InitialRank,
DeclContext *CurContext,
ResultBuilder &Results) {
if (!S)
return InitialRank;
// FIXME: Using directives!
unsigned NextRank = InitialRank;
Results.EnterNewScope();
if (S->getEntity() &&
!((DeclContext *)S->getEntity())->isFunctionOrMethod()) {
// Look into this scope's declaration context, along with any of its
// parent lookup contexts (e.g., enclosing classes), up to the point
// where we hit the context stored in the next outer scope.
DeclContext *Ctx = (DeclContext *)S->getEntity();
DeclContext *OuterCtx = findOuterContext(S);
for (; Ctx && Ctx->getPrimaryContext() != OuterCtx;
Ctx = Ctx->getLookupParent()) {
if (Ctx->isFunctionOrMethod())
continue;
NextRank = CollectMemberLookupResults(Ctx, NextRank + 1, CurContext,
Results);
}
} else if (!S->getParent()) {
// Look into the translation unit scope. We walk through the translation
// unit's declaration context, because the Scope itself won't have all of
// the declarations if we loaded a precompiled header.
// FIXME: We would like the translation unit's Scope object to point to the
// translation unit, so we don't need this special "if" branch. However,
// doing so would force the normal C++ name-lookup code to look into the
// translation unit decl when the IdentifierInfo chains would suffice.
// Once we fix that problem (which is part of a more general "don't look
// in DeclContexts unless we have to" optimization), we can eliminate the
// TranslationUnit parameter entirely.
NextRank = CollectMemberLookupResults(TranslationUnit, NextRank + 1,
CurContext, Results);
} else {
// Walk through the declarations in this Scope.
for (Scope::decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
D != DEnd; ++D) {
if (NamedDecl *ND = dyn_cast<NamedDecl>((Decl *)((*D).get())))
Results.MaybeAddResult(CodeCompleteConsumer::Result(ND, NextRank),
CurContext);
}
NextRank = NextRank + 1;
}
// Lookup names in the parent scope.
NextRank = CollectLookupResults(S->getParent(), TranslationUnit, NextRank,
CurContext, Results);
Results.ExitScope();
return NextRank;
}
/// \brief Add type specifiers for the current language as keyword results.
static void AddTypeSpecifierResults(const LangOptions &LangOpts, unsigned Rank,
ResultBuilder &Results) {
typedef CodeCompleteConsumer::Result Result;
Results.MaybeAddResult(Result("short", Rank));
Results.MaybeAddResult(Result("long", Rank));
Results.MaybeAddResult(Result("signed", Rank));
Results.MaybeAddResult(Result("unsigned", Rank));
Results.MaybeAddResult(Result("void", Rank));
Results.MaybeAddResult(Result("char", Rank));
Results.MaybeAddResult(Result("int", Rank));
Results.MaybeAddResult(Result("float", Rank));
Results.MaybeAddResult(Result("double", Rank));
Results.MaybeAddResult(Result("enum", Rank));
Results.MaybeAddResult(Result("struct", Rank));
Results.MaybeAddResult(Result("union", Rank));
if (LangOpts.C99) {
// C99-specific
Results.MaybeAddResult(Result("_Complex", Rank));
Results.MaybeAddResult(Result("_Imaginary", Rank));
Results.MaybeAddResult(Result("_Bool", Rank));
}
if (LangOpts.CPlusPlus) {
// C++-specific
Results.MaybeAddResult(Result("bool", Rank));
Results.MaybeAddResult(Result("class", Rank));
Results.MaybeAddResult(Result("typename", Rank));
Results.MaybeAddResult(Result("wchar_t", Rank));
if (LangOpts.CPlusPlus0x) {
Results.MaybeAddResult(Result("char16_t", Rank));
Results.MaybeAddResult(Result("char32_t", Rank));
Results.MaybeAddResult(Result("decltype", Rank));
}
}
// GNU extensions
if (LangOpts.GNUMode) {
// FIXME: Enable when we actually support decimal floating point.
// Results.MaybeAddResult(Result("_Decimal32", Rank));
// Results.MaybeAddResult(Result("_Decimal64", Rank));
// Results.MaybeAddResult(Result("_Decimal128", Rank));
Results.MaybeAddResult(Result("typeof", Rank));
}
}
/// \brief If the given declaration has an associated type, add it as a result
/// type chunk.
static void AddResultTypeChunk(ASTContext &Context,
NamedDecl *ND,
CodeCompletionString *Result) {
if (!ND)
return;
// Determine the type of the declaration (if it has a type).
QualType T;
if (FunctionDecl *Function = dyn_cast<FunctionDecl>(ND))
T = Function->getResultType();
else if (ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(ND))
T = Method->getResultType();
else if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(ND))
T = FunTmpl->getTemplatedDecl()->getResultType();
else if (EnumConstantDecl *Enumerator = dyn_cast<EnumConstantDecl>(ND))
T = Context.getTypeDeclType(cast<TypeDecl>(Enumerator->getDeclContext()));
else if (isa<UnresolvedUsingValueDecl>(ND)) {
/* Do nothing: ignore unresolved using declarations*/
} else if (ValueDecl *Value = dyn_cast<ValueDecl>(ND))
T = Value->getType();
else if (ObjCPropertyDecl *Property = dyn_cast<ObjCPropertyDecl>(ND))
T = Property->getType();
if (T.isNull() || Context.hasSameType(T, Context.DependentTy))
return;
std::string TypeStr;
T.getAsStringInternal(TypeStr, Context.PrintingPolicy);
Result->AddResultTypeChunk(TypeStr);
}
/// \brief Add function parameter chunks to the given code completion string.
static void AddFunctionParameterChunks(ASTContext &Context,
FunctionDecl *Function,
CodeCompletionString *Result) {
typedef CodeCompletionString::Chunk Chunk;
CodeCompletionString *CCStr = Result;
for (unsigned P = 0, N = Function->getNumParams(); P != N; ++P) {
ParmVarDecl *Param = Function->getParamDecl(P);
if (Param->hasDefaultArg()) {
// When we see an optional default argument, put that argument and
// the remaining default arguments into a new, optional string.
CodeCompletionString *Opt = new CodeCompletionString;
CCStr->AddOptionalChunk(std::auto_ptr<CodeCompletionString>(Opt));
CCStr = Opt;
}
if (P != 0)
CCStr->AddChunk(Chunk(CodeCompletionString::CK_Comma));
// Format the placeholder string.
std::string PlaceholderStr;
if (Param->getIdentifier())
PlaceholderStr = Param->getIdentifier()->getName();
Param->getType().getAsStringInternal(PlaceholderStr,
Context.PrintingPolicy);
// Add the placeholder string.
CCStr->AddPlaceholderChunk(PlaceholderStr);
}
if (const FunctionProtoType *Proto
= Function->getType()->getAs<FunctionProtoType>())
if (Proto->isVariadic())
CCStr->AddPlaceholderChunk(", ...");
}
/// \brief Add template parameter chunks to the given code completion string.
static void AddTemplateParameterChunks(ASTContext &Context,
TemplateDecl *Template,
CodeCompletionString *Result,
unsigned MaxParameters = 0) {
typedef CodeCompletionString::Chunk Chunk;
CodeCompletionString *CCStr = Result;
bool FirstParameter = true;
TemplateParameterList *Params = Template->getTemplateParameters();
TemplateParameterList::iterator PEnd = Params->end();
if (MaxParameters)
PEnd = Params->begin() + MaxParameters;
for (TemplateParameterList::iterator P = Params->begin(); P != PEnd; ++P) {
bool HasDefaultArg = false;
std::string PlaceholderStr;
if (TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(*P)) {
if (TTP->wasDeclaredWithTypename())
PlaceholderStr = "typename";
else
PlaceholderStr = "class";
if (TTP->getIdentifier()) {
PlaceholderStr += ' ';
PlaceholderStr += TTP->getIdentifier()->getName();
}
HasDefaultArg = TTP->hasDefaultArgument();
} else if (NonTypeTemplateParmDecl *NTTP
= dyn_cast<NonTypeTemplateParmDecl>(*P)) {
if (NTTP->getIdentifier())
PlaceholderStr = NTTP->getIdentifier()->getName();
NTTP->getType().getAsStringInternal(PlaceholderStr,
Context.PrintingPolicy);
HasDefaultArg = NTTP->hasDefaultArgument();
} else {
assert(isa<TemplateTemplateParmDecl>(*P));
TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*P);
// Since putting the template argument list into the placeholder would
// be very, very long, we just use an abbreviation.
PlaceholderStr = "template<...> class";
if (TTP->getIdentifier()) {
PlaceholderStr += ' ';
PlaceholderStr += TTP->getIdentifier()->getName();
}
HasDefaultArg = TTP->hasDefaultArgument();
}
if (HasDefaultArg) {
// When we see an optional default argument, put that argument and
// the remaining default arguments into a new, optional string.
CodeCompletionString *Opt = new CodeCompletionString;
CCStr->AddOptionalChunk(std::auto_ptr<CodeCompletionString>(Opt));
CCStr = Opt;
}
if (FirstParameter)
FirstParameter = false;
else
CCStr->AddChunk(Chunk(CodeCompletionString::CK_Comma));
// Add the placeholder string.
CCStr->AddPlaceholderChunk(PlaceholderStr);
}
}
/// \brief Add a qualifier to the given code-completion string, if the
/// provided nested-name-specifier is non-NULL.
static void
AddQualifierToCompletionString(CodeCompletionString *Result,
NestedNameSpecifier *Qualifier,
bool QualifierIsInformative,
ASTContext &Context) {
if (!Qualifier)
return;
std::string PrintedNNS;
{
llvm::raw_string_ostream OS(PrintedNNS);
Qualifier->print(OS, Context.PrintingPolicy);
}
if (QualifierIsInformative)
Result->AddInformativeChunk(PrintedNNS);
else
Result->AddTextChunk(PrintedNNS);
}
static void AddFunctionTypeQualsToCompletionString(CodeCompletionString *Result,
FunctionDecl *Function) {
const FunctionProtoType *Proto
= Function->getType()->getAs<FunctionProtoType>();
if (!Proto || !Proto->getTypeQuals())
return;
std::string QualsStr;
if (Proto->getTypeQuals() & Qualifiers::Const)
QualsStr += " const";
if (Proto->getTypeQuals() & Qualifiers::Volatile)
QualsStr += " volatile";
if (Proto->getTypeQuals() & Qualifiers::Restrict)
QualsStr += " restrict";
Result->AddInformativeChunk(QualsStr);
}
/// \brief If possible, create a new code completion string for the given
/// result.
///
/// \returns Either a new, heap-allocated code completion string describing
/// how to use this result, or NULL to indicate that the string or name of the
/// result is all that is needed.
CodeCompletionString *
CodeCompleteConsumer::Result::CreateCodeCompletionString(Sema &S) {
typedef CodeCompletionString::Chunk Chunk;
if (Kind == RK_Pattern)
return Pattern->Clone();
CodeCompletionString *Result = new CodeCompletionString;
if (Kind == RK_Keyword) {
Result->AddTypedTextChunk(Keyword);
return Result;
}
if (Kind == RK_Macro) {
MacroInfo *MI = S.PP.getMacroInfo(Macro);
assert(MI && "Not a macro?");
Result->AddTypedTextChunk(Macro->getName());
if (!MI->isFunctionLike())
return Result;
// Format a function-like macro with placeholders for the arguments.
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftParen));
for (MacroInfo::arg_iterator A = MI->arg_begin(), AEnd = MI->arg_end();
A != AEnd; ++A) {
if (A != MI->arg_begin())
Result->AddChunk(Chunk(CodeCompletionString::CK_Comma));
if (!MI->isVariadic() || A != AEnd - 1) {
// Non-variadic argument.
Result->AddPlaceholderChunk((*A)->getName());
continue;
}
// Variadic argument; cope with the different between GNU and C99
// variadic macros, providing a single placeholder for the rest of the
// arguments.
if ((*A)->isStr("__VA_ARGS__"))
Result->AddPlaceholderChunk("...");
else {
std::string Arg = (*A)->getName();
Arg += "...";
Result->AddPlaceholderChunk(Arg);
}
}
Result->AddChunk(Chunk(CodeCompletionString::CK_RightParen));
return Result;
}
assert(Kind == RK_Declaration && "Missed a macro kind?");
NamedDecl *ND = Declaration;
if (StartsNestedNameSpecifier) {
Result->AddTypedTextChunk(ND->getNameAsString());
Result->AddTextChunk("::");
return Result;
}
AddResultTypeChunk(S.Context, ND, Result);
if (FunctionDecl *Function = dyn_cast<FunctionDecl>(ND)) {
AddQualifierToCompletionString(Result, Qualifier, QualifierIsInformative,
S.Context);
Result->AddTypedTextChunk(Function->getNameAsString());
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftParen));
AddFunctionParameterChunks(S.Context, Function, Result);
Result->AddChunk(Chunk(CodeCompletionString::CK_RightParen));
AddFunctionTypeQualsToCompletionString(Result, Function);
return Result;
}
if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(ND)) {
AddQualifierToCompletionString(Result, Qualifier, QualifierIsInformative,
S.Context);
FunctionDecl *Function = FunTmpl->getTemplatedDecl();
Result->AddTypedTextChunk(Function->getNameAsString());
// Figure out which template parameters are deduced (or have default
// arguments).
llvm::SmallVector<bool, 16> Deduced;
S.MarkDeducedTemplateParameters(FunTmpl, Deduced);
unsigned LastDeducibleArgument;
for (LastDeducibleArgument = Deduced.size(); LastDeducibleArgument > 0;
--LastDeducibleArgument) {
if (!Deduced[LastDeducibleArgument - 1]) {
// C++0x: Figure out if the template argument has a default. If so,
// the user doesn't need to type this argument.
// FIXME: We need to abstract template parameters better!
bool HasDefaultArg = false;
NamedDecl *Param = FunTmpl->getTemplateParameters()->getParam(
LastDeducibleArgument - 1);
if (TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Param))
HasDefaultArg = TTP->hasDefaultArgument();
else if (NonTypeTemplateParmDecl *NTTP
= dyn_cast<NonTypeTemplateParmDecl>(Param))
HasDefaultArg = NTTP->hasDefaultArgument();
else {
assert(isa<TemplateTemplateParmDecl>(Param));
HasDefaultArg
= cast<TemplateTemplateParmDecl>(Param)->hasDefaultArgument();
}
if (!HasDefaultArg)
break;
}
}
if (LastDeducibleArgument) {
// Some of the function template arguments cannot be deduced from a
// function call, so we introduce an explicit template argument list
// containing all of the arguments up to the first deducible argument.
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftAngle));
AddTemplateParameterChunks(S.Context, FunTmpl, Result,
LastDeducibleArgument);
Result->AddChunk(Chunk(CodeCompletionString::CK_RightAngle));
}
// Add the function parameters
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftParen));
AddFunctionParameterChunks(S.Context, Function, Result);
Result->AddChunk(Chunk(CodeCompletionString::CK_RightParen));
AddFunctionTypeQualsToCompletionString(Result, Function);
return Result;
}
if (TemplateDecl *Template = dyn_cast<TemplateDecl>(ND)) {
AddQualifierToCompletionString(Result, Qualifier, QualifierIsInformative,
S.Context);
Result->AddTypedTextChunk(Template->getNameAsString());
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftAngle));
AddTemplateParameterChunks(S.Context, Template, Result);
Result->AddChunk(Chunk(CodeCompletionString::CK_RightAngle));
return Result;
}
if (ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(ND)) {
Selector Sel = Method->getSelector();
if (Sel.isUnarySelector()) {
Result->AddTypedTextChunk(Sel.getIdentifierInfoForSlot(0)->getName());
return Result;
}
std::string SelName = Sel.getIdentifierInfoForSlot(0)->getName().str();
SelName += ':';
if (StartParameter == 0)
Result->AddTypedTextChunk(SelName);
else {
Result->AddInformativeChunk(SelName);
// If there is only one parameter, and we're past it, add an empty
// typed-text chunk since there is nothing to type.
if (Method->param_size() == 1)
Result->AddTypedTextChunk("");
}
unsigned Idx = 0;
for (ObjCMethodDecl::param_iterator P = Method->param_begin(),
PEnd = Method->param_end();
P != PEnd; (void)++P, ++Idx) {
if (Idx > 0) {
std::string Keyword;
if (Idx > StartParameter)
Keyword = " ";
if (IdentifierInfo *II = Sel.getIdentifierInfoForSlot(Idx))
Keyword += II->getName().str();
Keyword += ":";
if (Idx < StartParameter || AllParametersAreInformative) {
Result->AddInformativeChunk(Keyword);
} else if (Idx == StartParameter)
Result->AddTypedTextChunk(Keyword);
else
Result->AddTextChunk(Keyword);
}
// If we're before the starting parameter, skip the placeholder.
if (Idx < StartParameter)
continue;
std::string Arg;
(*P)->getType().getAsStringInternal(Arg, S.Context.PrintingPolicy);
Arg = "(" + Arg + ")";
if (IdentifierInfo *II = (*P)->getIdentifier())
Arg += II->getName().str();
if (AllParametersAreInformative)
Result->AddInformativeChunk(Arg);
else
Result->AddPlaceholderChunk(Arg);
}
if (Method->isVariadic()) {
if (AllParametersAreInformative)
Result->AddInformativeChunk(", ...");
else
Result->AddPlaceholderChunk(", ...");
}
return Result;
}
if (Qualifier)
AddQualifierToCompletionString(Result, Qualifier, QualifierIsInformative,
S.Context);
Result->AddTypedTextChunk(ND->getNameAsString());
return Result;
}
CodeCompletionString *
CodeCompleteConsumer::OverloadCandidate::CreateSignatureString(
unsigned CurrentArg,
Sema &S) const {
typedef CodeCompletionString::Chunk Chunk;
CodeCompletionString *Result = new CodeCompletionString;
FunctionDecl *FDecl = getFunction();
AddResultTypeChunk(S.Context, FDecl, Result);
const FunctionProtoType *Proto
= dyn_cast<FunctionProtoType>(getFunctionType());
if (!FDecl && !Proto) {
// Function without a prototype. Just give the return type and a
// highlighted ellipsis.
const FunctionType *FT = getFunctionType();
Result->AddTextChunk(
FT->getResultType().getAsString(S.Context.PrintingPolicy));
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftParen));
Result->AddChunk(Chunk(CodeCompletionString::CK_CurrentParameter, "..."));
Result->AddChunk(Chunk(CodeCompletionString::CK_RightParen));
return Result;
}
if (FDecl)
Result->AddTextChunk(FDecl->getNameAsString());
else
Result->AddTextChunk(
Proto->getResultType().getAsString(S.Context.PrintingPolicy));
Result->AddChunk(Chunk(CodeCompletionString::CK_LeftParen));
unsigned NumParams = FDecl? FDecl->getNumParams() : Proto->getNumArgs();
for (unsigned I = 0; I != NumParams; ++I) {
if (I)
Result->AddChunk(Chunk(CodeCompletionString::CK_Comma));
std::string ArgString;
QualType ArgType;
if (FDecl) {
ArgString = FDecl->getParamDecl(I)->getNameAsString();
ArgType = FDecl->getParamDecl(I)->getOriginalType();
} else {
ArgType = Proto->getArgType(I);
}
ArgType.getAsStringInternal(ArgString, S.Context.PrintingPolicy);
if (I == CurrentArg)
Result->AddChunk(Chunk(CodeCompletionString::CK_CurrentParameter,
ArgString));
else
Result->AddTextChunk(ArgString);
}
if (Proto && Proto->isVariadic()) {
Result->AddChunk(Chunk(CodeCompletionString::CK_Comma));
if (CurrentArg < NumParams)
Result->AddTextChunk("...");
else
Result->AddChunk(Chunk(CodeCompletionString::CK_CurrentParameter, "..."));
}
Result->AddChunk(Chunk(CodeCompletionString::CK_RightParen));
return Result;
}
namespace {
struct SortCodeCompleteResult {
typedef CodeCompleteConsumer::Result Result;
bool isEarlierDeclarationName(DeclarationName X, DeclarationName Y) const {
Selector XSel = X.getObjCSelector();
Selector YSel = Y.getObjCSelector();
if (!XSel.isNull() && !YSel.isNull()) {
// We are comparing two selectors.
unsigned N = std::min(XSel.getNumArgs(), YSel.getNumArgs());
if (N == 0)
++N;
for (unsigned I = 0; I != N; ++I) {
IdentifierInfo *XId = XSel.getIdentifierInfoForSlot(I);
IdentifierInfo *YId = YSel.getIdentifierInfoForSlot(I);
if (!XId || !YId)
return XId && !YId;
switch (XId->getName().compare_lower(YId->getName())) {
case -1: return true;
case 1: return false;
default: break;
}
}
return XSel.getNumArgs() < YSel.getNumArgs();
}
// For non-selectors, order by kind.
if (X.getNameKind() != Y.getNameKind())
return X.getNameKind() < Y.getNameKind();
// Order identifiers by comparison of their lowercased names.
if (IdentifierInfo *XId = X.getAsIdentifierInfo())
return XId->getName().compare_lower(
Y.getAsIdentifierInfo()->getName()) < 0;
// Order overloaded operators by the order in which they appear
// in our list of operators.
if (OverloadedOperatorKind XOp = X.getCXXOverloadedOperator())
return XOp < Y.getCXXOverloadedOperator();
// Order C++0x user-defined literal operators lexically by their
// lowercased suffixes.
if (IdentifierInfo *XLit = X.getCXXLiteralIdentifier())
return XLit->getName().compare_lower(
Y.getCXXLiteralIdentifier()->getName()) < 0;
// The only stable ordering we have is to turn the name into a
// string and then compare the lower-case strings. This is
// inefficient, but thankfully does not happen too often.
return llvm::StringRef(X.getAsString()).compare_lower(
Y.getAsString()) < 0;
}
bool operator()(const Result &X, const Result &Y) const {
// Sort first by rank.
if (X.Rank < Y.Rank)
return true;
else if (X.Rank > Y.Rank)
return false;
// We use a special ordering for keywords and patterns, based on the
// typed text.
if ((X.Kind == Result::RK_Keyword || X.Kind == Result::RK_Pattern) &&
(Y.Kind == Result::RK_Keyword || Y.Kind == Result::RK_Pattern)) {
const char *XStr = (X.Kind == Result::RK_Keyword)? X.Keyword
: X.Pattern->getTypedText();
const char *YStr = (Y.Kind == Result::RK_Keyword)? Y.Keyword
: Y.Pattern->getTypedText();
return llvm::StringRef(XStr).compare_lower(YStr) < 0;
}
// Result kinds are ordered by decreasing importance.
if (X.Kind < Y.Kind)
return true;
else if (X.Kind > Y.Kind)
return false;
// Non-hidden names precede hidden names.
if (X.Hidden != Y.Hidden)
return !X.Hidden;
// Non-nested-name-specifiers precede nested-name-specifiers.
if (X.StartsNestedNameSpecifier != Y.StartsNestedNameSpecifier)
return !X.StartsNestedNameSpecifier;
// Ordering depends on the kind of result.
switch (X.Kind) {
case Result::RK_Declaration:
// Order based on the declaration names.
return isEarlierDeclarationName(X.Declaration->getDeclName(),
Y.Declaration->getDeclName());
case Result::RK_Macro:
return X.Macro->getName().compare_lower(Y.Macro->getName()) < 0;
case Result::RK_Keyword:
case Result::RK_Pattern:
llvm_unreachable("Result kinds handled above");
break;
}
// Silence GCC warning.
return false;
}
};
}
static void AddMacroResults(Preprocessor &PP, unsigned Rank,
ResultBuilder &Results) {
Results.EnterNewScope();
for (Preprocessor::macro_iterator M = PP.macro_begin(),
MEnd = PP.macro_end();
M != MEnd; ++M)
Results.MaybeAddResult(CodeCompleteConsumer::Result(M->first, Rank));
Results.ExitScope();
}
static void HandleCodeCompleteResults(Sema *S,
CodeCompleteConsumer *CodeCompleter,
CodeCompleteConsumer::Result *Results,
unsigned NumResults) {
// Sort the results by rank/kind/etc.
std::stable_sort(Results, Results + NumResults, SortCodeCompleteResult());
if (CodeCompleter)
CodeCompleter->ProcessCodeCompleteResults(*S, Results, NumResults);
for (unsigned I = 0; I != NumResults; ++I)
Results[I].Destroy();
}
void Sema::CodeCompleteOrdinaryName(Scope *S) {
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this, &ResultBuilder::IsOrdinaryName);
unsigned NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
0, CurContext, Results);
Results.EnterNewScope();
AddTypeSpecifierResults(getLangOptions(), NextRank, Results);
if (getLangOptions().ObjC1) {
// Add the "super" keyword, if appropriate.
if (ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(CurContext))
if (Method->getClassInterface()->getSuperClass())
Results.MaybeAddResult(Result("super", NextRank));
}
Results.ExitScope();
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
static void AddObjCProperties(ObjCContainerDecl *Container,
bool AllowCategories,
DeclContext *CurContext,
ResultBuilder &Results) {
typedef CodeCompleteConsumer::Result Result;
// Add properties in this container.
for (ObjCContainerDecl::prop_iterator P = Container->prop_begin(),
PEnd = Container->prop_end();
P != PEnd;
++P)
Results.MaybeAddResult(Result(*P, 0), CurContext);
// Add properties in referenced protocols.
if (ObjCProtocolDecl *Protocol = dyn_cast<ObjCProtocolDecl>(Container)) {
for (ObjCProtocolDecl::protocol_iterator P = Protocol->protocol_begin(),
PEnd = Protocol->protocol_end();
P != PEnd; ++P)
AddObjCProperties(*P, AllowCategories, CurContext, Results);
} else if (ObjCInterfaceDecl *IFace = dyn_cast<ObjCInterfaceDecl>(Container)){
if (AllowCategories) {
// Look through categories.
for (ObjCCategoryDecl *Category = IFace->getCategoryList();
Category; Category = Category->getNextClassCategory())
AddObjCProperties(Category, AllowCategories, CurContext, Results);
}
// Look through protocols.
for (ObjCInterfaceDecl::protocol_iterator I = IFace->protocol_begin(),
E = IFace->protocol_end();
I != E; ++I)
AddObjCProperties(*I, AllowCategories, CurContext, Results);
// Look in the superclass.
if (IFace->getSuperClass())
AddObjCProperties(IFace->getSuperClass(), AllowCategories, CurContext,
Results);
} else if (const ObjCCategoryDecl *Category
= dyn_cast<ObjCCategoryDecl>(Container)) {
// Look through protocols.
for (ObjCInterfaceDecl::protocol_iterator P = Category->protocol_begin(),
PEnd = Category->protocol_end();
P != PEnd; ++P)
AddObjCProperties(*P, AllowCategories, CurContext, Results);
}
}
void Sema::CodeCompleteMemberReferenceExpr(Scope *S, ExprTy *BaseE,
SourceLocation OpLoc,
bool IsArrow) {
if (!BaseE || !CodeCompleter)
return;
typedef CodeCompleteConsumer::Result Result;
Expr *Base = static_cast<Expr *>(BaseE);
QualType BaseType = Base->getType();
if (IsArrow) {
if (const PointerType *Ptr = BaseType->getAs<PointerType>())
BaseType = Ptr->getPointeeType();
else if (BaseType->isObjCObjectPointerType())
/*Do nothing*/ ;
else
return;
}
ResultBuilder Results(*this, &ResultBuilder::IsMember);
unsigned NextRank = 0;
Results.EnterNewScope();
if (const RecordType *Record = BaseType->getAs<RecordType>()) {
// Access to a C/C++ class, struct, or union.
NextRank = CollectMemberLookupResults(Record->getDecl(), NextRank,
Record->getDecl(), Results);
if (getLangOptions().CPlusPlus) {
if (!Results.empty()) {
// The "template" keyword can follow "->" or "." in the grammar.
// However, we only want to suggest the template keyword if something
// is dependent.
bool IsDependent = BaseType->isDependentType();
if (!IsDependent) {
for (Scope *DepScope = S; DepScope; DepScope = DepScope->getParent())
if (DeclContext *Ctx = (DeclContext *)DepScope->getEntity()) {
IsDependent = Ctx->isDependentContext();
break;
}
}
if (IsDependent)
Results.MaybeAddResult(Result("template", NextRank++));
}
// We could have the start of a nested-name-specifier. Add those
// results as well.
// FIXME: We should really walk base classes to produce
// nested-name-specifiers so that we produce more-precise results.
Results.setFilter(&ResultBuilder::IsNestedNameSpecifier);
CollectLookupResults(S, Context.getTranslationUnitDecl(), NextRank,
CurContext, Results);
}
} else if (!IsArrow && BaseType->getAsObjCInterfacePointerType()) {
// Objective-C property reference.
// Add property results based on our interface.
const ObjCObjectPointerType *ObjCPtr
= BaseType->getAsObjCInterfacePointerType();
assert(ObjCPtr && "Non-NULL pointer guaranteed above!");
AddObjCProperties(ObjCPtr->getInterfaceDecl(), true, CurContext, Results);
// Add properties from the protocols in a qualified interface.
for (ObjCObjectPointerType::qual_iterator I = ObjCPtr->qual_begin(),
E = ObjCPtr->qual_end();
I != E; ++I)
AddObjCProperties(*I, true, CurContext, Results);
// FIXME: We could (should?) also look for "implicit" properties, identified
// only by the presence of nullary and unary selectors.
} else if ((IsArrow && BaseType->isObjCObjectPointerType()) ||
(!IsArrow && BaseType->isObjCInterfaceType())) {
// Objective-C instance variable access.
ObjCInterfaceDecl *Class = 0;
if (const ObjCObjectPointerType *ObjCPtr
= BaseType->getAs<ObjCObjectPointerType>())
Class = ObjCPtr->getInterfaceDecl();
else
Class = BaseType->getAs<ObjCInterfaceType>()->getDecl();
// Add all ivars from this class and its superclasses.
for (; Class; Class = Class->getSuperClass()) {
for (ObjCInterfaceDecl::ivar_iterator IVar = Class->ivar_begin(),
IVarEnd = Class->ivar_end();
IVar != IVarEnd; ++IVar)
Results.MaybeAddResult(Result(*IVar, 0), CurContext);
}
}
// FIXME: How do we cope with isa?
Results.ExitScope();
// Add macros
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
// Hand off the results found for code completion.
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteTag(Scope *S, unsigned TagSpec) {
if (!CodeCompleter)
return;
typedef CodeCompleteConsumer::Result Result;
ResultBuilder::LookupFilter Filter = 0;
switch ((DeclSpec::TST)TagSpec) {
case DeclSpec::TST_enum:
Filter = &ResultBuilder::IsEnum;
break;
case DeclSpec::TST_union:
Filter = &ResultBuilder::IsUnion;
break;
case DeclSpec::TST_struct:
case DeclSpec::TST_class:
Filter = &ResultBuilder::IsClassOrStruct;
break;
default:
assert(false && "Unknown type specifier kind in CodeCompleteTag");
return;
}
ResultBuilder Results(*this, Filter);
unsigned NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
0, CurContext, Results);
if (getLangOptions().CPlusPlus) {
// We could have the start of a nested-name-specifier. Add those
// results as well.
Results.setFilter(&ResultBuilder::IsNestedNameSpecifier);
NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
NextRank, CurContext, Results);
}
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteCase(Scope *S) {
if (getSwitchStack().empty() || !CodeCompleter)
return;
SwitchStmt *Switch = getSwitchStack().back();
if (!Switch->getCond()->getType()->isEnumeralType())
return;
// Code-complete the cases of a switch statement over an enumeration type
// by providing the list of
EnumDecl *Enum = Switch->getCond()->getType()->getAs<EnumType>()->getDecl();
// Determine which enumerators we have already seen in the switch statement.
// FIXME: Ideally, we would also be able to look *past* the code-completion
// token, in case we are code-completing in the middle of the switch and not
// at the end. However, we aren't able to do so at the moment.
llvm::SmallPtrSet<EnumConstantDecl *, 8> EnumeratorsSeen;
NestedNameSpecifier *Qualifier = 0;
for (SwitchCase *SC = Switch->getSwitchCaseList(); SC;
SC = SC->getNextSwitchCase()) {
CaseStmt *Case = dyn_cast<CaseStmt>(SC);
if (!Case)
continue;
Expr *CaseVal = Case->getLHS()->IgnoreParenCasts();
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CaseVal))
if (EnumConstantDecl *Enumerator
= dyn_cast<EnumConstantDecl>(DRE->getDecl())) {
// We look into the AST of the case statement to determine which
// enumerator was named. Alternatively, we could compute the value of
// the integral constant expression, then compare it against the
// values of each enumerator. However, value-based approach would not
// work as well with C++ templates where enumerators declared within a
// template are type- and value-dependent.
EnumeratorsSeen.insert(Enumerator);
// If this is a qualified-id, keep track of the nested-name-specifier
// so that we can reproduce it as part of code completion, e.g.,
//
// switch (TagD.getKind()) {
// case TagDecl::TK_enum:
// break;
// case XXX
//
// At the XXX, our completions are TagDecl::TK_union,
// TagDecl::TK_struct, and TagDecl::TK_class, rather than TK_union,
// TK_struct, and TK_class.
Qualifier = DRE->getQualifier();
}
}
if (getLangOptions().CPlusPlus && !Qualifier && EnumeratorsSeen.empty()) {
// If there are no prior enumerators in C++, check whether we have to
// qualify the names of the enumerators that we suggest, because they
// may not be visible in this scope.
Qualifier = getRequiredQualification(Context, CurContext,
Enum->getDeclContext());
// FIXME: Scoped enums need to start with "EnumDecl" as the context!
}
// Add any enumerators that have not yet been mentioned.
ResultBuilder Results(*this);
Results.EnterNewScope();
for (EnumDecl::enumerator_iterator E = Enum->enumerator_begin(),
EEnd = Enum->enumerator_end();
E != EEnd; ++E) {
if (EnumeratorsSeen.count(*E))
continue;
Results.MaybeAddResult(CodeCompleteConsumer::Result(*E, 0, Qualifier));
}
Results.ExitScope();
if (CodeCompleter->includeMacros())
AddMacroResults(PP, 1, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
namespace {
struct IsBetterOverloadCandidate {
Sema &S;
public:
explicit IsBetterOverloadCandidate(Sema &S) : S(S) { }
bool
operator()(const OverloadCandidate &X, const OverloadCandidate &Y) const {
return S.isBetterOverloadCandidate(X, Y);
}
};
}
void Sema::CodeCompleteCall(Scope *S, ExprTy *FnIn,
ExprTy **ArgsIn, unsigned NumArgs) {
if (!CodeCompleter)
return;
// When we're code-completing for a call, we fall back to ordinary
// name code-completion whenever we can't produce specific
// results. We may want to revisit this strategy in the future,
// e.g., by merging the two kinds of results.
Expr *Fn = (Expr *)FnIn;
Expr **Args = (Expr **)ArgsIn;
// Ignore type-dependent call expressions entirely.
if (Fn->isTypeDependent() ||
Expr::hasAnyTypeDependentArguments(Args, NumArgs)) {
CodeCompleteOrdinaryName(S);
return;
}
// Build an overload candidate set based on the functions we find.
OverloadCandidateSet CandidateSet;
// FIXME: What if we're calling something that isn't a function declaration?
// FIXME: What if we're calling a pseudo-destructor?
// FIXME: What if we're calling a member function?
Expr *NakedFn = Fn->IgnoreParenCasts();
if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(NakedFn))
AddOverloadedCallCandidates(ULE, Args, NumArgs, CandidateSet,
/*PartialOverloading=*/ true);
else if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(NakedFn)) {
FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl());
if (FDecl)
AddOverloadCandidate(FDecl, Args, NumArgs, CandidateSet,
false, false, /*PartialOverloading*/ true);
}
// Sort the overload candidate set by placing the best overloads first.
std::stable_sort(CandidateSet.begin(), CandidateSet.end(),
IsBetterOverloadCandidate(*this));
// Add the remaining viable overload candidates as code-completion reslults.
typedef CodeCompleteConsumer::OverloadCandidate ResultCandidate;
llvm::SmallVector<ResultCandidate, 8> Results;
for (OverloadCandidateSet::iterator Cand = CandidateSet.begin(),
CandEnd = CandidateSet.end();
Cand != CandEnd; ++Cand) {
if (Cand->Viable)
Results.push_back(ResultCandidate(Cand->Function));
}
if (Results.empty())
CodeCompleteOrdinaryName(S);
else
CodeCompleter->ProcessOverloadCandidates(*this, NumArgs, Results.data(),
Results.size());
}
void Sema::CodeCompleteQualifiedId(Scope *S, const CXXScopeSpec &SS,
bool EnteringContext) {
if (!SS.getScopeRep() || !CodeCompleter)
return;
DeclContext *Ctx = computeDeclContext(SS, EnteringContext);
if (!Ctx)
return;
// Try to instantiate any non-dependent declaration contexts before
// we look in them.
if (!isDependentScopeSpecifier(SS) && RequireCompleteDeclContext(SS))
return;
ResultBuilder Results(*this);
unsigned NextRank = CollectMemberLookupResults(Ctx, 0, Ctx, Results);
// The "template" keyword can follow "::" in the grammar, but only
// put it into the grammar if the nested-name-specifier is dependent.
NestedNameSpecifier *NNS = (NestedNameSpecifier *)SS.getScopeRep();
if (!Results.empty() && NNS->isDependent())
Results.MaybeAddResult(CodeCompleteConsumer::Result("template", NextRank));
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank + 1, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteUsing(Scope *S) {
if (!CodeCompleter)
return;
ResultBuilder Results(*this, &ResultBuilder::IsNestedNameSpecifier);
Results.EnterNewScope();
// If we aren't in class scope, we could see the "namespace" keyword.
if (!S->isClassScope())
Results.MaybeAddResult(CodeCompleteConsumer::Result("namespace", 0));
// After "using", we can see anything that would start a
// nested-name-specifier.
unsigned NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
0, CurContext, Results);
Results.ExitScope();
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteUsingDirective(Scope *S) {
if (!CodeCompleter)
return;
// After "using namespace", we expect to see a namespace name or namespace
// alias.
ResultBuilder Results(*this, &ResultBuilder::IsNamespaceOrAlias);
Results.EnterNewScope();
unsigned NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
0, CurContext, Results);
Results.ExitScope();
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteNamespaceDecl(Scope *S) {
if (!CodeCompleter)
return;
ResultBuilder Results(*this, &ResultBuilder::IsNamespace);
DeclContext *Ctx = (DeclContext *)S->getEntity();
if (!S->getParent())
Ctx = Context.getTranslationUnitDecl();
if (Ctx && Ctx->isFileContext()) {
// We only want to see those namespaces that have already been defined
// within this scope, because its likely that the user is creating an
// extended namespace declaration. Keep track of the most recent
// definition of each namespace.
std::map<NamespaceDecl *, NamespaceDecl *> OrigToLatest;
for (DeclContext::specific_decl_iterator<NamespaceDecl>
NS(Ctx->decls_begin()), NSEnd(Ctx->decls_end());
NS != NSEnd; ++NS)
OrigToLatest[NS->getOriginalNamespace()] = *NS;
// Add the most recent definition (or extended definition) of each
// namespace to the list of results.
Results.EnterNewScope();
for (std::map<NamespaceDecl *, NamespaceDecl *>::iterator
NS = OrigToLatest.begin(), NSEnd = OrigToLatest.end();
NS != NSEnd; ++NS)
Results.MaybeAddResult(CodeCompleteConsumer::Result(NS->second, 0),
CurContext);
Results.ExitScope();
}
if (CodeCompleter->includeMacros())
AddMacroResults(PP, 1, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteNamespaceAliasDecl(Scope *S) {
if (!CodeCompleter)
return;
// After "namespace", we expect to see a namespace or alias.
ResultBuilder Results(*this, &ResultBuilder::IsNamespaceOrAlias);
unsigned NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
0, CurContext, Results);
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteOperatorName(Scope *S) {
if (!CodeCompleter)
return;
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this, &ResultBuilder::IsType);
Results.EnterNewScope();
// Add the names of overloadable operators.
#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \
if (std::strcmp(Spelling, "?")) \
Results.MaybeAddResult(Result(Spelling, 0));
#include "clang/Basic/OperatorKinds.def"
// Add any type names visible from the current scope
unsigned NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
0, CurContext, Results);
// Add any type specifiers
AddTypeSpecifierResults(getLangOptions(), 0, Results);
// Add any nested-name-specifiers
Results.setFilter(&ResultBuilder::IsNestedNameSpecifier);
NextRank = CollectLookupResults(S, Context.getTranslationUnitDecl(),
NextRank + 1, CurContext, Results);
Results.ExitScope();
if (CodeCompleter->includeMacros())
AddMacroResults(PP, NextRank, Results);
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCAtDirective(Scope *S, DeclPtrTy ObjCImpDecl,
bool InInterface) {
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this);
Results.EnterNewScope();
if (ObjCImpDecl) {
// Since we have an implementation, we can end it.
Results.MaybeAddResult(Result("end", 0));
CodeCompletionString *Pattern = 0;
Decl *ImpDecl = ObjCImpDecl.getAs<Decl>();
if (isa<ObjCImplementationDecl>(ImpDecl) ||
isa<ObjCCategoryImplDecl>(ImpDecl)) {
// @dynamic
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("dynamic");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("property");
Results.MaybeAddResult(Result(Pattern, 0));
// @synthesize
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("synthesize");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("property");
Results.MaybeAddResult(Result(Pattern, 0));
}
} else if (InInterface) {
// Since we have an interface or protocol, we can end it.
Results.MaybeAddResult(Result("end", 0));
if (LangOpts.ObjC2) {
// @property
Results.MaybeAddResult(Result("property", 0));
}
// @required
Results.MaybeAddResult(Result("required", 0));
// @optional
Results.MaybeAddResult(Result("optional", 0));
} else {
CodeCompletionString *Pattern = 0;
// @class name ;
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("class");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("identifier");
Pattern->AddTextChunk(";"); // add ';' chunk
Results.MaybeAddResult(Result(Pattern, 0));
// @interface name
// FIXME: Could introduce the whole pattern, including superclasses and
// such.
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("interface");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("class");
Results.MaybeAddResult(Result(Pattern, 0));
// @protocol name
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("protocol");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("protocol");
Results.MaybeAddResult(Result(Pattern, 0));
// @implementation name
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("implementation");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("class");
Results.MaybeAddResult(Result(Pattern, 0));
// @compatibility_alias name
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("compatibility_alias");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("alias");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("class");
Results.MaybeAddResult(Result(Pattern, 0));
}
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
static void AddObjCExpressionResults(unsigned Rank, ResultBuilder &Results) {
typedef CodeCompleteConsumer::Result Result;
CodeCompletionString *Pattern = 0;
// @encode ( type-name )
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("encode");
Pattern->AddChunk(CodeCompletionString::CK_LeftParen);
Pattern->AddPlaceholderChunk("type-name");
Pattern->AddChunk(CodeCompletionString::CK_RightParen);
Results.MaybeAddResult(Result(Pattern, Rank));
// @protocol ( protocol-name )
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("protocol");
Pattern->AddChunk(CodeCompletionString::CK_LeftParen);
Pattern->AddPlaceholderChunk("protocol-name");
Pattern->AddChunk(CodeCompletionString::CK_RightParen);
Results.MaybeAddResult(Result(Pattern, Rank));
// @selector ( selector )
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("selector");
Pattern->AddChunk(CodeCompletionString::CK_LeftParen);
Pattern->AddPlaceholderChunk("selector");
Pattern->AddChunk(CodeCompletionString::CK_RightParen);
Results.MaybeAddResult(Result(Pattern, Rank));
}
void Sema::CodeCompleteObjCAtStatement(Scope *S) {
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this);
Results.EnterNewScope();
CodeCompletionString *Pattern = 0;
// @try { statements } @catch ( declaration ) { statements } @finally
// { statements }
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("try");
Pattern->AddChunk(CodeCompletionString::CK_LeftBrace);
Pattern->AddPlaceholderChunk("statements");
Pattern->AddChunk(CodeCompletionString::CK_RightBrace);
Pattern->AddTextChunk("@catch");
Pattern->AddChunk(CodeCompletionString::CK_LeftParen);
Pattern->AddPlaceholderChunk("parameter");
Pattern->AddChunk(CodeCompletionString::CK_RightParen);
Pattern->AddChunk(CodeCompletionString::CK_LeftBrace);
Pattern->AddPlaceholderChunk("statements");
Pattern->AddChunk(CodeCompletionString::CK_RightBrace);
Pattern->AddTextChunk("@finally");
Pattern->AddChunk(CodeCompletionString::CK_LeftBrace);
Pattern->AddPlaceholderChunk("statements");
Pattern->AddChunk(CodeCompletionString::CK_RightBrace);
Results.MaybeAddResult(Result(Pattern, 0));
// @throw
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("throw");
Pattern->AddTextChunk(" ");
Pattern->AddPlaceholderChunk("expression");
Pattern->AddTextChunk(";");
Results.MaybeAddResult(Result(Pattern, 0)); // FIXME: add ';' chunk
// @synchronized ( expression ) { statements }
Pattern = new CodeCompletionString;
Pattern->AddTypedTextChunk("synchronized");
Pattern->AddTextChunk(" ");
Pattern->AddChunk(CodeCompletionString::CK_LeftParen);
Pattern->AddPlaceholderChunk("expression");
Pattern->AddChunk(CodeCompletionString::CK_RightParen);
Pattern->AddChunk(CodeCompletionString::CK_LeftBrace);
Pattern->AddPlaceholderChunk("statements");
Pattern->AddChunk(CodeCompletionString::CK_RightBrace);
Results.MaybeAddResult(Result(Pattern, 0)); // FIXME: add ';' chunk
AddObjCExpressionResults(0, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCAtExpression(Scope *S) {
ResultBuilder Results(*this);
Results.EnterNewScope();
AddObjCExpressionResults(0, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
/// \brief Determine whether the addition of the given flag to an Objective-C
/// property's attributes will cause a conflict.
static bool ObjCPropertyFlagConflicts(unsigned Attributes, unsigned NewFlag) {
// Check if we've already added this flag.
if (Attributes & NewFlag)
return true;
Attributes |= NewFlag;
// Check for collisions with "readonly".
if ((Attributes & ObjCDeclSpec::DQ_PR_readonly) &&
(Attributes & (ObjCDeclSpec::DQ_PR_readwrite |
ObjCDeclSpec::DQ_PR_assign |
ObjCDeclSpec::DQ_PR_copy |
ObjCDeclSpec::DQ_PR_retain)))
return true;
// Check for more than one of { assign, copy, retain }.
unsigned AssignCopyRetMask = Attributes & (ObjCDeclSpec::DQ_PR_assign |
ObjCDeclSpec::DQ_PR_copy |
ObjCDeclSpec::DQ_PR_retain);
if (AssignCopyRetMask &&
AssignCopyRetMask != ObjCDeclSpec::DQ_PR_assign &&
AssignCopyRetMask != ObjCDeclSpec::DQ_PR_copy &&
AssignCopyRetMask != ObjCDeclSpec::DQ_PR_retain)
return true;
return false;
}
void Sema::CodeCompleteObjCPropertyFlags(Scope *S, ObjCDeclSpec &ODS) {
if (!CodeCompleter)
return;
unsigned Attributes = ODS.getPropertyAttributes();
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this);
Results.EnterNewScope();
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_readonly))
Results.MaybeAddResult(CodeCompleteConsumer::Result("readonly", 0));
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_assign))
Results.MaybeAddResult(CodeCompleteConsumer::Result("assign", 0));
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_readwrite))
Results.MaybeAddResult(CodeCompleteConsumer::Result("readwrite", 0));
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_retain))
Results.MaybeAddResult(CodeCompleteConsumer::Result("retain", 0));
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_copy))
Results.MaybeAddResult(CodeCompleteConsumer::Result("copy", 0));
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_nonatomic))
Results.MaybeAddResult(CodeCompleteConsumer::Result("nonatomic", 0));
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_setter)) {
CodeCompletionString *Setter = new CodeCompletionString;
Setter->AddTypedTextChunk("setter");
Setter->AddTextChunk(" = ");
Setter->AddPlaceholderChunk("method");
Results.MaybeAddResult(CodeCompleteConsumer::Result(Setter, 0));
}
if (!ObjCPropertyFlagConflicts(Attributes, ObjCDeclSpec::DQ_PR_getter)) {
CodeCompletionString *Getter = new CodeCompletionString;
Getter->AddTypedTextChunk("getter");
Getter->AddTextChunk(" = ");
Getter->AddPlaceholderChunk("method");
Results.MaybeAddResult(CodeCompleteConsumer::Result(Getter, 0));
}
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
/// \brief Descripts the kind of Objective-C method that we want to find
/// via code completion.
enum ObjCMethodKind {
MK_Any, //< Any kind of method, provided it means other specified criteria.
MK_ZeroArgSelector, //< Zero-argument (unary) selector.
MK_OneArgSelector //< One-argument selector.
};
static bool isAcceptableObjCMethod(ObjCMethodDecl *Method,
ObjCMethodKind WantKind,
IdentifierInfo **SelIdents,
unsigned NumSelIdents) {
Selector Sel = Method->getSelector();
if (NumSelIdents > Sel.getNumArgs())
return false;
switch (WantKind) {
case MK_Any: break;
case MK_ZeroArgSelector: return Sel.isUnarySelector();
case MK_OneArgSelector: return Sel.getNumArgs() == 1;
}
for (unsigned I = 0; I != NumSelIdents; ++I)
if (SelIdents[I] != Sel.getIdentifierInfoForSlot(I))
return false;
return true;
}
/// \brief Add all of the Objective-C methods in the given Objective-C
/// container to the set of results.
///
/// The container will be a class, protocol, category, or implementation of
/// any of the above. This mether will recurse to include methods from
/// the superclasses of classes along with their categories, protocols, and
/// implementations.
///
/// \param Container the container in which we'll look to find methods.
///
/// \param WantInstance whether to add instance methods (only); if false, this
/// routine will add factory methods (only).
///
/// \param CurContext the context in which we're performing the lookup that
/// finds methods.
///
/// \param Results the structure into which we'll add results.
static void AddObjCMethods(ObjCContainerDecl *Container,
bool WantInstanceMethods,
ObjCMethodKind WantKind,
IdentifierInfo **SelIdents,
unsigned NumSelIdents,
DeclContext *CurContext,
ResultBuilder &Results) {
typedef CodeCompleteConsumer::Result Result;
for (ObjCContainerDecl::method_iterator M = Container->meth_begin(),
MEnd = Container->meth_end();
M != MEnd; ++M) {
if ((*M)->isInstanceMethod() == WantInstanceMethods) {
// Check whether the selector identifiers we've been given are a
// subset of the identifiers for this particular method.
if (!isAcceptableObjCMethod(*M, WantKind, SelIdents, NumSelIdents))
continue;
Result R = Result(*M, 0);
R.StartParameter = NumSelIdents;
R.AllParametersAreInformative = (WantKind != MK_Any);
Results.MaybeAddResult(R, CurContext);
}
}
ObjCInterfaceDecl *IFace = dyn_cast<ObjCInterfaceDecl>(Container);
if (!IFace)
return;
// Add methods in protocols.
const ObjCList<ObjCProtocolDecl> &Protocols= IFace->getReferencedProtocols();
for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
E = Protocols.end();
I != E; ++I)
AddObjCMethods(*I, WantInstanceMethods, WantKind, SelIdents, NumSelIdents,
CurContext, Results);
// Add methods in categories.
for (ObjCCategoryDecl *CatDecl = IFace->getCategoryList(); CatDecl;
CatDecl = CatDecl->getNextClassCategory()) {
AddObjCMethods(CatDecl, WantInstanceMethods, WantKind, SelIdents,
NumSelIdents, CurContext, Results);
// Add a categories protocol methods.
const ObjCList<ObjCProtocolDecl> &Protocols
= CatDecl->getReferencedProtocols();
for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
E = Protocols.end();
I != E; ++I)
AddObjCMethods(*I, WantInstanceMethods, WantKind, SelIdents,
NumSelIdents, CurContext, Results);
// Add methods in category implementations.
if (ObjCCategoryImplDecl *Impl = CatDecl->getImplementation())
AddObjCMethods(Impl, WantInstanceMethods, WantKind, SelIdents,
NumSelIdents, CurContext, Results);
}
// Add methods in superclass.
if (IFace->getSuperClass())
AddObjCMethods(IFace->getSuperClass(), WantInstanceMethods, WantKind,
SelIdents, NumSelIdents, CurContext, Results);
// Add methods in our implementation, if any.
if (ObjCImplementationDecl *Impl = IFace->getImplementation())
AddObjCMethods(Impl, WantInstanceMethods, WantKind, SelIdents,
NumSelIdents, CurContext, Results);
}
void Sema::CodeCompleteObjCPropertyGetter(Scope *S, DeclPtrTy ClassDecl,
DeclPtrTy *Methods,
unsigned NumMethods) {
typedef CodeCompleteConsumer::Result Result;
// Try to find the interface where getters might live.
ObjCInterfaceDecl *Class
= dyn_cast_or_null<ObjCInterfaceDecl>(ClassDecl.getAs<Decl>());
if (!Class) {
if (ObjCCategoryDecl *Category
= dyn_cast_or_null<ObjCCategoryDecl>(ClassDecl.getAs<Decl>()))
Class = Category->getClassInterface();
if (!Class)
return;
}
// Find all of the potential getters.
ResultBuilder Results(*this);
Results.EnterNewScope();
// FIXME: We need to do this because Objective-C methods don't get
// pushed into DeclContexts early enough. Argh!
for (unsigned I = 0; I != NumMethods; ++I) {
if (ObjCMethodDecl *Method
= dyn_cast_or_null<ObjCMethodDecl>(Methods[I].getAs<Decl>()))
if (Method->isInstanceMethod() &&
isAcceptableObjCMethod(Method, MK_ZeroArgSelector, 0, 0)) {
Result R = Result(Method, 0);
R.AllParametersAreInformative = true;
Results.MaybeAddResult(R, CurContext);
}
}
AddObjCMethods(Class, true, MK_ZeroArgSelector, 0, 0, CurContext, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter,Results.data(),Results.size());
}
void Sema::CodeCompleteObjCPropertySetter(Scope *S, DeclPtrTy ObjCImplDecl,
DeclPtrTy *Methods,
unsigned NumMethods) {
typedef CodeCompleteConsumer::Result Result;
// Try to find the interface where setters might live.
ObjCInterfaceDecl *Class
= dyn_cast_or_null<ObjCInterfaceDecl>(ObjCImplDecl.getAs<Decl>());
if (!Class) {
if (ObjCCategoryDecl *Category
= dyn_cast_or_null<ObjCCategoryDecl>(ObjCImplDecl.getAs<Decl>()))
Class = Category->getClassInterface();
if (!Class)
return;
}
// Find all of the potential getters.
ResultBuilder Results(*this);
Results.EnterNewScope();
// FIXME: We need to do this because Objective-C methods don't get
// pushed into DeclContexts early enough. Argh!
for (unsigned I = 0; I != NumMethods; ++I) {
if (ObjCMethodDecl *Method
= dyn_cast_or_null<ObjCMethodDecl>(Methods[I].getAs<Decl>()))
if (Method->isInstanceMethod() &&
isAcceptableObjCMethod(Method, MK_OneArgSelector, 0, 0)) {
Result R = Result(Method, 0);
R.AllParametersAreInformative = true;
Results.MaybeAddResult(R, CurContext);
}
}
AddObjCMethods(Class, true, MK_OneArgSelector, 0, 0, CurContext, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter,Results.data(),Results.size());
}
void Sema::CodeCompleteObjCClassMessage(Scope *S, IdentifierInfo *FName,
SourceLocation FNameLoc,
IdentifierInfo **SelIdents,
unsigned NumSelIdents) {
typedef CodeCompleteConsumer::Result Result;
ObjCInterfaceDecl *CDecl = 0;
if (FName->isStr("super")) {
// We're sending a message to "super".
if (ObjCMethodDecl *CurMethod = getCurMethodDecl()) {
// Figure out which interface we're in.
CDecl = CurMethod->getClassInterface();
if (!CDecl)
return;
// Find the superclass of this class.
CDecl = CDecl->getSuperClass();
if (!CDecl)
return;
if (CurMethod->isInstanceMethod()) {
// We are inside an instance method, which means that the message
// send [super ...] is actually calling an instance method on the
// current object. Build the super expression and handle this like
// an instance method.
QualType SuperTy = Context.getObjCInterfaceType(CDecl);
SuperTy = Context.getObjCObjectPointerType(SuperTy);
OwningExprResult Super
= Owned(new (Context) ObjCSuperExpr(FNameLoc, SuperTy));
return CodeCompleteObjCInstanceMessage(S, (Expr *)Super.get(),
SelIdents, NumSelIdents);
}
// Okay, we're calling a factory method in our superclass.
}
}
// If the given name refers to an interface type, retrieve the
// corresponding declaration.
if (!CDecl)
if (TypeTy *Ty = getTypeName(*FName, FNameLoc, S, 0, false)) {
QualType T = GetTypeFromParser(Ty, 0);
if (!T.isNull())
if (const ObjCInterfaceType *Interface = T->getAs<ObjCInterfaceType>())
CDecl = Interface->getDecl();
}
if (!CDecl && FName->isStr("super")) {
// "super" may be the name of a variable, in which case we are
// probably calling an instance method.
CXXScopeSpec SS;
UnqualifiedId id;
id.setIdentifier(FName, FNameLoc);
OwningExprResult Super = ActOnIdExpression(S, SS, id, false, false);
return CodeCompleteObjCInstanceMessage(S, (Expr *)Super.get(),
SelIdents, NumSelIdents);
}
// Add all of the factory methods in this Objective-C class, its protocols,
// superclasses, categories, implementation, etc.
ResultBuilder Results(*this);
Results.EnterNewScope();
AddObjCMethods(CDecl, false, MK_Any, SelIdents, NumSelIdents, CurContext,
Results);
Results.ExitScope();
// This also suppresses remaining diagnostics.
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCInstanceMessage(Scope *S, ExprTy *Receiver,
IdentifierInfo **SelIdents,
unsigned NumSelIdents) {
typedef CodeCompleteConsumer::Result Result;
Expr *RecExpr = static_cast<Expr *>(Receiver);
// If necessary, apply function/array conversion to the receiver.
// C99 6.7.5.3p[7,8].
DefaultFunctionArrayConversion(RecExpr);
QualType ReceiverType = RecExpr->getType();
if (ReceiverType->isObjCIdType() || ReceiverType->isBlockPointerType()) {
// FIXME: We're messaging 'id'. Do we actually want to look up every method
// in the universe?
return;
}
// Build the set of methods we can see.
ResultBuilder Results(*this);
Results.EnterNewScope();
// Handle messages to Class. This really isn't a message to an instance
// method, so we treat it the same way we would treat a message send to a
// class method.
if (ReceiverType->isObjCClassType() ||
ReceiverType->isObjCQualifiedClassType()) {
if (ObjCMethodDecl *CurMethod = getCurMethodDecl()) {
if (ObjCInterfaceDecl *ClassDecl = CurMethod->getClassInterface())
AddObjCMethods(ClassDecl, false, MK_Any, SelIdents, NumSelIdents,
CurContext, Results);
}
}
// Handle messages to a qualified ID ("id<foo>").
else if (const ObjCObjectPointerType *QualID
= ReceiverType->getAsObjCQualifiedIdType()) {
// Search protocols for instance methods.
for (ObjCObjectPointerType::qual_iterator I = QualID->qual_begin(),
E = QualID->qual_end();
I != E; ++I)
AddObjCMethods(*I, true, MK_Any, SelIdents, NumSelIdents, CurContext,
Results);
}
// Handle messages to a pointer to interface type.
else if (const ObjCObjectPointerType *IFacePtr
= ReceiverType->getAsObjCInterfacePointerType()) {
// Search the class, its superclasses, etc., for instance methods.
AddObjCMethods(IFacePtr->getInterfaceDecl(), true, MK_Any, SelIdents,
NumSelIdents, CurContext, Results);
// Search protocols for instance methods.
for (ObjCObjectPointerType::qual_iterator I = IFacePtr->qual_begin(),
E = IFacePtr->qual_end();
I != E; ++I)
AddObjCMethods(*I, true, MK_Any, SelIdents, NumSelIdents, CurContext,
Results);
}
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
/// \brief Add all of the protocol declarations that we find in the given
/// (translation unit) context.
static void AddProtocolResults(DeclContext *Ctx, DeclContext *CurContext,
bool OnlyForwardDeclarations,
ResultBuilder &Results) {
typedef CodeCompleteConsumer::Result Result;
for (DeclContext::decl_iterator D = Ctx->decls_begin(),
DEnd = Ctx->decls_end();
D != DEnd; ++D) {
// Record any protocols we find.
if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(*D))
if (!OnlyForwardDeclarations || Proto->isForwardDecl())
Results.MaybeAddResult(Result(Proto, 0), CurContext);
// Record any forward-declared protocols we find.
if (ObjCForwardProtocolDecl *Forward
= dyn_cast<ObjCForwardProtocolDecl>(*D)) {
for (ObjCForwardProtocolDecl::protocol_iterator
P = Forward->protocol_begin(),
PEnd = Forward->protocol_end();
P != PEnd; ++P)
if (!OnlyForwardDeclarations || (*P)->isForwardDecl())
Results.MaybeAddResult(Result(*P, 0), CurContext);
}
}
}
void Sema::CodeCompleteObjCProtocolReferences(IdentifierLocPair *Protocols,
unsigned NumProtocols) {
ResultBuilder Results(*this);
Results.EnterNewScope();
// Tell the result set to ignore all of the protocols we have
// already seen.
for (unsigned I = 0; I != NumProtocols; ++I)
if (ObjCProtocolDecl *Protocol = LookupProtocol(Protocols[I].first))
Results.Ignore(Protocol);
// Add all protocols.
AddProtocolResults(Context.getTranslationUnitDecl(), CurContext, false,
Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCProtocolDecl(Scope *) {
ResultBuilder Results(*this);
Results.EnterNewScope();
// Add all protocols.
AddProtocolResults(Context.getTranslationUnitDecl(), CurContext, true,
Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
/// \brief Add all of the Objective-C interface declarations that we find in
/// the given (translation unit) context.
static void AddInterfaceResults(DeclContext *Ctx, DeclContext *CurContext,
bool OnlyForwardDeclarations,
bool OnlyUnimplemented,
ResultBuilder &Results) {
typedef CodeCompleteConsumer::Result Result;
for (DeclContext::decl_iterator D = Ctx->decls_begin(),
DEnd = Ctx->decls_end();
D != DEnd; ++D) {
// Record any interfaces we find.
if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(*D))
if ((!OnlyForwardDeclarations || Class->isForwardDecl()) &&
(!OnlyUnimplemented || !Class->getImplementation()))
Results.MaybeAddResult(Result(Class, 0), CurContext);
// Record any forward-declared interfaces we find.
if (ObjCClassDecl *Forward = dyn_cast<ObjCClassDecl>(*D)) {
for (ObjCClassDecl::iterator C = Forward->begin(), CEnd = Forward->end();
C != CEnd; ++C)
if ((!OnlyForwardDeclarations || C->getInterface()->isForwardDecl()) &&
(!OnlyUnimplemented || !C->getInterface()->getImplementation()))
Results.MaybeAddResult(Result(C->getInterface(), 0), CurContext);
}
}
}
void Sema::CodeCompleteObjCInterfaceDecl(Scope *S) {
ResultBuilder Results(*this);
Results.EnterNewScope();
// Add all classes.
AddInterfaceResults(Context.getTranslationUnitDecl(), CurContext, true,
false, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCSuperclass(Scope *S, IdentifierInfo *ClassName) {
ResultBuilder Results(*this);
Results.EnterNewScope();
// Make sure that we ignore the class we're currently defining.
NamedDecl *CurClass
= LookupSingleName(TUScope, ClassName, LookupOrdinaryName);
if (CurClass && isa<ObjCInterfaceDecl>(CurClass))
Results.Ignore(CurClass);
// Add all classes.
AddInterfaceResults(Context.getTranslationUnitDecl(), CurContext, false,
false, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCImplementationDecl(Scope *S) {
ResultBuilder Results(*this);
Results.EnterNewScope();
// Add all unimplemented classes.
AddInterfaceResults(Context.getTranslationUnitDecl(), CurContext, false,
true, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCInterfaceCategory(Scope *S,
IdentifierInfo *ClassName) {
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this);
// Ignore any categories we find that have already been implemented by this
// interface.
llvm::SmallPtrSet<IdentifierInfo *, 16> CategoryNames;
NamedDecl *CurClass
= LookupSingleName(TUScope, ClassName, LookupOrdinaryName);
if (ObjCInterfaceDecl *Class = dyn_cast_or_null<ObjCInterfaceDecl>(CurClass))
for (ObjCCategoryDecl *Category = Class->getCategoryList(); Category;
Category = Category->getNextClassCategory())
CategoryNames.insert(Category->getIdentifier());
// Add all of the categories we know about.
Results.EnterNewScope();
TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
for (DeclContext::decl_iterator D = TU->decls_begin(),
DEnd = TU->decls_end();
D != DEnd; ++D)
if (ObjCCategoryDecl *Category = dyn_cast<ObjCCategoryDecl>(*D))
if (CategoryNames.insert(Category->getIdentifier()))
Results.MaybeAddResult(Result(Category, 0), CurContext);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCImplementationCategory(Scope *S,
IdentifierInfo *ClassName) {
typedef CodeCompleteConsumer::Result Result;
// Find the corresponding interface. If we couldn't find the interface, the
// program itself is ill-formed. However, we'll try to be helpful still by
// providing the list of all of the categories we know about.
NamedDecl *CurClass
= LookupSingleName(TUScope, ClassName, LookupOrdinaryName);
ObjCInterfaceDecl *Class = dyn_cast_or_null<ObjCInterfaceDecl>(CurClass);
if (!Class)
return CodeCompleteObjCInterfaceCategory(S, ClassName);
ResultBuilder Results(*this);
// Add all of the categories that have have corresponding interface
// declarations in this class and any of its superclasses, except for
// already-implemented categories in the class itself.
llvm::SmallPtrSet<IdentifierInfo *, 16> CategoryNames;
Results.EnterNewScope();
bool IgnoreImplemented = true;
while (Class) {
for (ObjCCategoryDecl *Category = Class->getCategoryList(); Category;
Category = Category->getNextClassCategory())
if ((!IgnoreImplemented || !Category->getImplementation()) &&
CategoryNames.insert(Category->getIdentifier()))
Results.MaybeAddResult(Result(Category, 0), CurContext);
Class = Class->getSuperClass();
IgnoreImplemented = false;
}
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCPropertyDefinition(Scope *S, DeclPtrTy ObjCImpDecl) {
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this);
// Figure out where this @synthesize lives.
ObjCContainerDecl *Container
= dyn_cast_or_null<ObjCContainerDecl>(ObjCImpDecl.getAs<Decl>());
if (!Container ||
(!isa<ObjCImplementationDecl>(Container) &&
!isa<ObjCCategoryImplDecl>(Container)))
return;
// Ignore any properties that have already been implemented.
for (DeclContext::decl_iterator D = Container->decls_begin(),
DEnd = Container->decls_end();
D != DEnd; ++D)
if (ObjCPropertyImplDecl *PropertyImpl = dyn_cast<ObjCPropertyImplDecl>(*D))
Results.Ignore(PropertyImpl->getPropertyDecl());
// Add any properties that we find.
Results.EnterNewScope();
if (ObjCImplementationDecl *ClassImpl
= dyn_cast<ObjCImplementationDecl>(Container))
AddObjCProperties(ClassImpl->getClassInterface(), false, CurContext,
Results);
else
AddObjCProperties(cast<ObjCCategoryImplDecl>(Container)->getCategoryDecl(),
false, CurContext, Results);
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}
void Sema::CodeCompleteObjCPropertySynthesizeIvar(Scope *S,
IdentifierInfo *PropertyName,
DeclPtrTy ObjCImpDecl) {
typedef CodeCompleteConsumer::Result Result;
ResultBuilder Results(*this);
// Figure out where this @synthesize lives.
ObjCContainerDecl *Container
= dyn_cast_or_null<ObjCContainerDecl>(ObjCImpDecl.getAs<Decl>());
if (!Container ||
(!isa<ObjCImplementationDecl>(Container) &&
!isa<ObjCCategoryImplDecl>(Container)))
return;
// Figure out which interface we're looking into.
ObjCInterfaceDecl *Class = 0;
if (ObjCImplementationDecl *ClassImpl
= dyn_cast<ObjCImplementationDecl>(Container))
Class = ClassImpl->getClassInterface();
else
Class = cast<ObjCCategoryImplDecl>(Container)->getCategoryDecl()
->getClassInterface();
// Add all of the instance variables in this class and its superclasses.
Results.EnterNewScope();
for(; Class; Class = Class->getSuperClass()) {
// FIXME: We could screen the type of each ivar for compatibility with
// the property, but is that being too paternal?
for (ObjCInterfaceDecl::ivar_iterator IVar = Class->ivar_begin(),
IVarEnd = Class->ivar_end();
IVar != IVarEnd; ++IVar)
Results.MaybeAddResult(Result(*IVar, 0), CurContext);
}
Results.ExitScope();
HandleCodeCompleteResults(this, CodeCompleter, Results.data(),Results.size());
}