540 lines
17 KiB
C++
540 lines
17 KiB
C++
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//===- CIndexHigh.cpp - Higher level API functions ------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "CursorVisitor.h"
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#include "CLog.h"
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#include "CXCursor.h"
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#include "CXSourceLocation.h"
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#include "CXTranslationUnit.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/Frontend/ASTUnit.h"
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#include "llvm/Support/Compiler.h"
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using namespace clang;
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using namespace cxcursor;
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using namespace cxindex;
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static void getTopOverriddenMethods(CXTranslationUnit TU,
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const Decl *D,
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SmallVectorImpl<const Decl *> &Methods) {
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if (!D)
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return;
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if (!isa<ObjCMethodDecl>(D) && !isa<CXXMethodDecl>(D))
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return;
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SmallVector<CXCursor, 8> Overridden;
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cxcursor::getOverriddenCursors(cxcursor::MakeCXCursor(D, TU), Overridden);
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if (Overridden.empty()) {
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Methods.push_back(D->getCanonicalDecl());
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return;
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}
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for (SmallVectorImpl<CXCursor>::iterator
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I = Overridden.begin(), E = Overridden.end(); I != E; ++I)
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getTopOverriddenMethods(TU, cxcursor::getCursorDecl(*I), Methods);
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}
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namespace {
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struct FindFileIdRefVisitData {
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CXTranslationUnit TU;
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FileID FID;
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const Decl *Dcl;
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int SelectorIdIdx;
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CXCursorAndRangeVisitor visitor;
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typedef SmallVector<const Decl *, 8> TopMethodsTy;
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TopMethodsTy TopMethods;
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FindFileIdRefVisitData(CXTranslationUnit TU, FileID FID,
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const Decl *D, int selectorIdIdx,
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CXCursorAndRangeVisitor visitor)
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: TU(TU), FID(FID), SelectorIdIdx(selectorIdIdx), visitor(visitor) {
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Dcl = getCanonical(D);
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getTopOverriddenMethods(TU, Dcl, TopMethods);
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}
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ASTContext &getASTContext() const {
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return cxtu::getASTUnit(TU)->getASTContext();
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}
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/// \brief We are looking to find all semantically relevant identifiers,
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/// so the definition of "canonical" here is different than in the AST, e.g.
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///
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/// \code
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/// class C {
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/// C() {}
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/// };
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/// \endcode
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///
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/// we consider the canonical decl of the constructor decl to be the class
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/// itself, so both 'C' can be highlighted.
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const Decl *getCanonical(const Decl *D) const {
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if (!D)
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return 0;
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D = D->getCanonicalDecl();
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if (const ObjCImplDecl *ImplD = dyn_cast<ObjCImplDecl>(D)) {
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if (ImplD->getClassInterface())
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return getCanonical(ImplD->getClassInterface());
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} else if (const CXXConstructorDecl *CXXCtorD =
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dyn_cast<CXXConstructorDecl>(D)) {
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return getCanonical(CXXCtorD->getParent());
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}
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return D;
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}
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bool isHit(const Decl *D) const {
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if (!D)
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return false;
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D = getCanonical(D);
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if (D == Dcl)
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return true;
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if (isa<ObjCMethodDecl>(D) || isa<CXXMethodDecl>(D))
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return isOverriddingMethod(D);
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return false;
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}
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private:
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bool isOverriddingMethod(const Decl *D) const {
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if (std::find(TopMethods.begin(), TopMethods.end(), D) !=
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TopMethods.end())
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return true;
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TopMethodsTy methods;
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getTopOverriddenMethods(TU, D, methods);
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for (TopMethodsTy::iterator
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I = methods.begin(), E = methods.end(); I != E; ++I) {
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if (std::find(TopMethods.begin(), TopMethods.end(), *I) !=
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TopMethods.end())
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return true;
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}
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return false;
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}
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};
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} // end anonymous namespace.
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/// \brief For a macro \arg Loc, returns the file spelling location and sets
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/// to \arg isMacroArg whether the spelling resides inside a macro definition or
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/// a macro argument.
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static SourceLocation getFileSpellingLoc(SourceManager &SM,
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SourceLocation Loc,
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bool &isMacroArg) {
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assert(Loc.isMacroID());
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SourceLocation SpellLoc = SM.getImmediateSpellingLoc(Loc);
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if (SpellLoc.isMacroID())
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return getFileSpellingLoc(SM, SpellLoc, isMacroArg);
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isMacroArg = SM.isMacroArgExpansion(Loc);
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return SpellLoc;
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}
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static enum CXChildVisitResult findFileIdRefVisit(CXCursor cursor,
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CXCursor parent,
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CXClientData client_data) {
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CXCursor declCursor = clang_getCursorReferenced(cursor);
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if (!clang_isDeclaration(declCursor.kind))
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return CXChildVisit_Recurse;
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const Decl *D = cxcursor::getCursorDecl(declCursor);
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if (!D)
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return CXChildVisit_Continue;
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FindFileIdRefVisitData *data = (FindFileIdRefVisitData *)client_data;
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if (data->isHit(D)) {
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cursor = cxcursor::getSelectorIdentifierCursor(data->SelectorIdIdx, cursor);
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// We are looking for identifiers to highlight so for objc methods (and
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// not a parameter) we can only highlight the selector identifiers.
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if ((cursor.kind == CXCursor_ObjCClassMethodDecl ||
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cursor.kind == CXCursor_ObjCInstanceMethodDecl) &&
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cxcursor::getSelectorIdentifierIndex(cursor) == -1)
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return CXChildVisit_Recurse;
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if (clang_isExpression(cursor.kind)) {
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if (cursor.kind == CXCursor_DeclRefExpr ||
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cursor.kind == CXCursor_MemberRefExpr) {
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// continue..
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} else if (cursor.kind == CXCursor_ObjCMessageExpr &&
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cxcursor::getSelectorIdentifierIndex(cursor) != -1) {
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// continue..
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} else
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return CXChildVisit_Recurse;
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}
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SourceLocation
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Loc = cxloc::translateSourceLocation(clang_getCursorLocation(cursor));
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SourceLocation SelIdLoc = cxcursor::getSelectorIdentifierLoc(cursor);
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if (SelIdLoc.isValid())
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Loc = SelIdLoc;
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ASTContext &Ctx = data->getASTContext();
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SourceManager &SM = Ctx.getSourceManager();
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bool isInMacroDef = false;
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if (Loc.isMacroID()) {
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bool isMacroArg;
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Loc = getFileSpellingLoc(SM, Loc, isMacroArg);
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isInMacroDef = !isMacroArg;
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}
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// We are looking for identifiers in a specific file.
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std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
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if (LocInfo.first != data->FID)
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return CXChildVisit_Recurse;
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if (isInMacroDef) {
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// FIXME: For a macro definition make sure that all expansions
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// of it expand to the same reference before allowing to point to it.
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return CXChildVisit_Recurse;
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}
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if (data->visitor.visit(data->visitor.context, cursor,
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cxloc::translateSourceRange(Ctx, Loc)) == CXVisit_Break)
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return CXChildVisit_Break;
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}
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return CXChildVisit_Recurse;
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}
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static bool findIdRefsInFile(CXTranslationUnit TU, CXCursor declCursor,
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const FileEntry *File,
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CXCursorAndRangeVisitor Visitor) {
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assert(clang_isDeclaration(declCursor.kind));
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SourceManager &SM = cxtu::getASTUnit(TU)->getSourceManager();
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FileID FID = SM.translateFile(File);
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const Decl *Dcl = cxcursor::getCursorDecl(declCursor);
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if (!Dcl)
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return false;
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FindFileIdRefVisitData data(TU, FID, Dcl,
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cxcursor::getSelectorIdentifierIndex(declCursor),
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Visitor);
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if (const DeclContext *DC = Dcl->getParentFunctionOrMethod()) {
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return clang_visitChildren(cxcursor::MakeCXCursor(cast<Decl>(DC), TU),
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findFileIdRefVisit, &data);
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}
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SourceRange Range(SM.getLocForStartOfFile(FID), SM.getLocForEndOfFile(FID));
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CursorVisitor FindIdRefsVisitor(TU,
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findFileIdRefVisit, &data,
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/*VisitPreprocessorLast=*/true,
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/*VisitIncludedEntities=*/false,
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Range,
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/*VisitDeclsOnly=*/true);
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return FindIdRefsVisitor.visitFileRegion();
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}
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namespace {
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struct FindFileMacroRefVisitData {
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ASTUnit &Unit;
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const FileEntry *File;
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const IdentifierInfo *Macro;
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CXCursorAndRangeVisitor visitor;
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FindFileMacroRefVisitData(ASTUnit &Unit, const FileEntry *File,
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const IdentifierInfo *Macro,
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CXCursorAndRangeVisitor visitor)
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: Unit(Unit), File(File), Macro(Macro), visitor(visitor) { }
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ASTContext &getASTContext() const {
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return Unit.getASTContext();
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}
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};
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} // anonymous namespace
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static enum CXChildVisitResult findFileMacroRefVisit(CXCursor cursor,
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CXCursor parent,
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CXClientData client_data) {
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const IdentifierInfo *Macro = 0;
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if (cursor.kind == CXCursor_MacroDefinition)
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Macro = getCursorMacroDefinition(cursor)->getName();
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else if (cursor.kind == CXCursor_MacroExpansion)
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Macro = getCursorMacroExpansion(cursor).getName();
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if (!Macro)
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return CXChildVisit_Continue;
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FindFileMacroRefVisitData *data = (FindFileMacroRefVisitData *)client_data;
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if (data->Macro != Macro)
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return CXChildVisit_Continue;
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SourceLocation
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Loc = cxloc::translateSourceLocation(clang_getCursorLocation(cursor));
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ASTContext &Ctx = data->getASTContext();
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SourceManager &SM = Ctx.getSourceManager();
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bool isInMacroDef = false;
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if (Loc.isMacroID()) {
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bool isMacroArg;
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Loc = getFileSpellingLoc(SM, Loc, isMacroArg);
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isInMacroDef = !isMacroArg;
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}
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// We are looking for identifiers in a specific file.
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std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
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if (SM.getFileEntryForID(LocInfo.first) != data->File)
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return CXChildVisit_Continue;
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if (isInMacroDef) {
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// FIXME: For a macro definition make sure that all expansions
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// of it expand to the same reference before allowing to point to it.
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return CXChildVisit_Continue;
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}
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if (data->visitor.visit(data->visitor.context, cursor,
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cxloc::translateSourceRange(Ctx, Loc)) == CXVisit_Break)
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return CXChildVisit_Break;
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return CXChildVisit_Continue;
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}
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static bool findMacroRefsInFile(CXTranslationUnit TU, CXCursor Cursor,
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const FileEntry *File,
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CXCursorAndRangeVisitor Visitor) {
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if (Cursor.kind != CXCursor_MacroDefinition &&
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Cursor.kind != CXCursor_MacroExpansion)
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return false;
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ASTUnit *Unit = cxtu::getASTUnit(TU);
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SourceManager &SM = Unit->getSourceManager();
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FileID FID = SM.translateFile(File);
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const IdentifierInfo *Macro = 0;
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if (Cursor.kind == CXCursor_MacroDefinition)
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Macro = getCursorMacroDefinition(Cursor)->getName();
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else
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Macro = getCursorMacroExpansion(Cursor).getName();
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if (!Macro)
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return false;
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FindFileMacroRefVisitData data(*Unit, File, Macro, Visitor);
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SourceRange Range(SM.getLocForStartOfFile(FID), SM.getLocForEndOfFile(FID));
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CursorVisitor FindMacroRefsVisitor(TU,
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findFileMacroRefVisit, &data,
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/*VisitPreprocessorLast=*/false,
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/*VisitIncludedEntities=*/false,
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Range);
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return FindMacroRefsVisitor.visitPreprocessedEntitiesInRegion();
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}
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namespace {
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struct FindFileIncludesVisitor {
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ASTUnit &Unit;
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const FileEntry *File;
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CXCursorAndRangeVisitor visitor;
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FindFileIncludesVisitor(ASTUnit &Unit, const FileEntry *File,
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CXCursorAndRangeVisitor visitor)
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: Unit(Unit), File(File), visitor(visitor) { }
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ASTContext &getASTContext() const {
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return Unit.getASTContext();
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}
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enum CXChildVisitResult visit(CXCursor cursor, CXCursor parent) {
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if (cursor.kind != CXCursor_InclusionDirective)
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return CXChildVisit_Continue;
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SourceLocation
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Loc = cxloc::translateSourceLocation(clang_getCursorLocation(cursor));
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ASTContext &Ctx = getASTContext();
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SourceManager &SM = Ctx.getSourceManager();
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// We are looking for includes in a specific file.
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std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
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if (SM.getFileEntryForID(LocInfo.first) != File)
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return CXChildVisit_Continue;
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if (visitor.visit(visitor.context, cursor,
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cxloc::translateSourceRange(Ctx, Loc)) == CXVisit_Break)
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return CXChildVisit_Break;
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return CXChildVisit_Continue;
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}
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static enum CXChildVisitResult visit(CXCursor cursor, CXCursor parent,
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CXClientData client_data) {
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return static_cast<FindFileIncludesVisitor*>(client_data)->
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visit(cursor, parent);
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}
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};
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||
|
|
|
||
|
|
} // anonymous namespace
|
||
|
|
|
||
|
|
static bool findIncludesInFile(CXTranslationUnit TU, const FileEntry *File,
|
||
|
|
CXCursorAndRangeVisitor Visitor) {
|
||
|
|
assert(TU && File && Visitor.visit);
|
||
|
|
|
||
|
|
ASTUnit *Unit = cxtu::getASTUnit(TU);
|
||
|
|
SourceManager &SM = Unit->getSourceManager();
|
||
|
|
|
||
|
|
FileID FID = SM.translateFile(File);
|
||
|
|
|
||
|
|
FindFileIncludesVisitor IncludesVisitor(*Unit, File, Visitor);
|
||
|
|
|
||
|
|
SourceRange Range(SM.getLocForStartOfFile(FID), SM.getLocForEndOfFile(FID));
|
||
|
|
CursorVisitor InclusionCursorsVisitor(TU,
|
||
|
|
FindFileIncludesVisitor::visit,
|
||
|
|
&IncludesVisitor,
|
||
|
|
/*VisitPreprocessorLast=*/false,
|
||
|
|
/*VisitIncludedEntities=*/false,
|
||
|
|
Range);
|
||
|
|
return InclusionCursorsVisitor.visitPreprocessedEntitiesInRegion();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
// libclang public APIs.
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
extern "C" {
|
||
|
|
|
||
|
|
CXResult clang_findReferencesInFile(CXCursor cursor, CXFile file,
|
||
|
|
CXCursorAndRangeVisitor visitor) {
|
||
|
|
LogRef Log = Logger::make(LLVM_FUNCTION_NAME);
|
||
|
|
|
||
|
|
if (clang_Cursor_isNull(cursor)) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Null cursor";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
if (cursor.kind == CXCursor_NoDeclFound) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Got CXCursor_NoDeclFound";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
if (!file) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Null file";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
if (!visitor.visit) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Null visitor";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Log)
|
||
|
|
*Log << cursor << " @" << static_cast<const FileEntry *>(file);
|
||
|
|
|
||
|
|
ASTUnit *CXXUnit = cxcursor::getCursorASTUnit(cursor);
|
||
|
|
if (!CXXUnit)
|
||
|
|
return CXResult_Invalid;
|
||
|
|
|
||
|
|
ASTUnit::ConcurrencyCheck Check(*CXXUnit);
|
||
|
|
|
||
|
|
if (cursor.kind == CXCursor_MacroDefinition ||
|
||
|
|
cursor.kind == CXCursor_MacroExpansion) {
|
||
|
|
if (findMacroRefsInFile(cxcursor::getCursorTU(cursor),
|
||
|
|
cursor,
|
||
|
|
static_cast<const FileEntry *>(file),
|
||
|
|
visitor))
|
||
|
|
return CXResult_VisitBreak;
|
||
|
|
return CXResult_Success;
|
||
|
|
}
|
||
|
|
|
||
|
|
// We are interested in semantics of identifiers so for C++ constructor exprs
|
||
|
|
// prefer type references, e.g.:
|
||
|
|
//
|
||
|
|
// return MyStruct();
|
||
|
|
//
|
||
|
|
// for 'MyStruct' we'll have a cursor pointing at the constructor decl but
|
||
|
|
// we are actually interested in the type declaration.
|
||
|
|
cursor = cxcursor::getTypeRefCursor(cursor);
|
||
|
|
|
||
|
|
CXCursor refCursor = clang_getCursorReferenced(cursor);
|
||
|
|
|
||
|
|
if (!clang_isDeclaration(refCursor.kind)) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "cursor is not referencing a declaration";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (findIdRefsInFile(cxcursor::getCursorTU(cursor),
|
||
|
|
refCursor,
|
||
|
|
static_cast<const FileEntry *>(file),
|
||
|
|
visitor))
|
||
|
|
return CXResult_VisitBreak;
|
||
|
|
return CXResult_Success;
|
||
|
|
}
|
||
|
|
|
||
|
|
CXResult clang_findIncludesInFile(CXTranslationUnit TU, CXFile file,
|
||
|
|
CXCursorAndRangeVisitor visitor) {
|
||
|
|
LogRef Log = Logger::make(LLVM_FUNCTION_NAME);
|
||
|
|
|
||
|
|
if (!TU) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Null CXTranslationUnit";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
if (!file) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Null file";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
if (!visitor.visit) {
|
||
|
|
if (Log)
|
||
|
|
*Log << "Null visitor";
|
||
|
|
return CXResult_Invalid;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Log)
|
||
|
|
*Log << TU << " @" << static_cast<const FileEntry *>(file);
|
||
|
|
|
||
|
|
ASTUnit *CXXUnit = cxtu::getASTUnit(TU);
|
||
|
|
if (!CXXUnit)
|
||
|
|
return CXResult_Invalid;
|
||
|
|
|
||
|
|
ASTUnit::ConcurrencyCheck Check(*CXXUnit);
|
||
|
|
|
||
|
|
if (findIncludesInFile(TU, static_cast<const FileEntry *>(file), visitor))
|
||
|
|
return CXResult_VisitBreak;
|
||
|
|
return CXResult_Success;
|
||
|
|
}
|
||
|
|
|
||
|
|
static enum CXVisitorResult _visitCursorAndRange(void *context,
|
||
|
|
CXCursor cursor,
|
||
|
|
CXSourceRange range) {
|
||
|
|
CXCursorAndRangeVisitorBlock block = (CXCursorAndRangeVisitorBlock)context;
|
||
|
|
return INVOKE_BLOCK2(block, cursor, range);
|
||
|
|
}
|
||
|
|
|
||
|
|
CXResult clang_findReferencesInFileWithBlock(CXCursor cursor,
|
||
|
|
CXFile file,
|
||
|
|
CXCursorAndRangeVisitorBlock block) {
|
||
|
|
CXCursorAndRangeVisitor visitor = { block,
|
||
|
|
block ? _visitCursorAndRange : 0 };
|
||
|
|
return clang_findReferencesInFile(cursor, file, visitor);
|
||
|
|
}
|
||
|
|
|
||
|
|
CXResult clang_findIncludesInFileWithBlock(CXTranslationUnit TU,
|
||
|
|
CXFile file,
|
||
|
|
CXCursorAndRangeVisitorBlock block) {
|
||
|
|
CXCursorAndRangeVisitor visitor = { block,
|
||
|
|
block ? _visitCursorAndRange : 0 };
|
||
|
|
return clang_findIncludesInFile(TU, file, visitor);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // end: extern "C"
|
||
|
|
|