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//===- CIndexUSRs.cpp - Clang-C Source Indexing Library -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the generation and use of USRs from CXEntities.
//
//===----------------------------------------------------------------------===//
#include "CIndexer.h"
#include "CXCursor.h"
#include "CXString.h"
#include "CXTranslationUnit.h"
#include "clang/Frontend/ASTUnit.h"
#include "clang/Index/USRGeneration.h"
#include "clang/Lex/PreprocessingRecord.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
using namespace clang::index;
//===----------------------------------------------------------------------===//
// API hooks.
//===----------------------------------------------------------------------===//
static inline StringRef extractUSRSuffix(StringRef s) {
return s.startswith("c:") ? s.substr(2) : "";
}
bool cxcursor::getDeclCursorUSR(const Decl *D, SmallVectorImpl<char> &Buf) {
return generateUSRForDecl(D, Buf);
}
CXString clang_getCursorUSR(CXCursor C) {
const CXCursorKind &K = clang_getCursorKind(C);
if (clang_isDeclaration(K)) {
const Decl *D = cxcursor::getCursorDecl(C);
if (!D)
return cxstring::createEmpty();
CXTranslationUnit TU = cxcursor::getCursorTU(C);
if (!TU)
return cxstring::createEmpty();
cxstring::CXStringBuf *buf = cxstring::getCXStringBuf(TU);
if (!buf)
return cxstring::createEmpty();
bool Ignore = cxcursor::getDeclCursorUSR(D, buf->Data);
if (Ignore) {
buf->dispose();
return cxstring::createEmpty();
}
// Return the C-string, but don't make a copy since it is already in
// the string buffer.
buf->Data.push_back('\0');
return createCXString(buf);
}
if (K == CXCursor_MacroDefinition) {
CXTranslationUnit TU = cxcursor::getCursorTU(C);
if (!TU)
return cxstring::createEmpty();
cxstring::CXStringBuf *buf = cxstring::getCXStringBuf(TU);
if (!buf)
return cxstring::createEmpty();
bool Ignore = generateUSRForMacro(cxcursor::getCursorMacroDefinition(C),
cxtu::getASTUnit(TU)->getSourceManager(),
buf->Data);
if (Ignore) {
buf->dispose();
return cxstring::createEmpty();
}
// Return the C-string, but don't make a copy since it is already in
// the string buffer.
buf->Data.push_back('\0');
return createCXString(buf);
}
return cxstring::createEmpty();
}
CXString clang_constructUSR_ObjCIvar(const char *name, CXString classUSR) {
SmallString<128> Buf(getUSRSpacePrefix());
llvm::raw_svector_ostream OS(Buf);
OS << extractUSRSuffix(clang_getCString(classUSR));
generateUSRForObjCIvar(name, OS);
return cxstring::createDup(OS.str());
}
CXString clang_constructUSR_ObjCMethod(const char *name,
unsigned isInstanceMethod,
CXString classUSR) {
SmallString<128> Buf(getUSRSpacePrefix());
llvm::raw_svector_ostream OS(Buf);
OS << extractUSRSuffix(clang_getCString(classUSR));
generateUSRForObjCMethod(name, isInstanceMethod, OS);
return cxstring::createDup(OS.str());
}
CXString clang_constructUSR_ObjCClass(const char *name) {
SmallString<128> Buf(getUSRSpacePrefix());
llvm::raw_svector_ostream OS(Buf);
generateUSRForObjCClass(name, OS);
return cxstring::createDup(OS.str());
}
CXString clang_constructUSR_ObjCProtocol(const char *name) {
SmallString<128> Buf(getUSRSpacePrefix());
llvm::raw_svector_ostream OS(Buf);
generateUSRForObjCProtocol(name, OS);
return cxstring::createDup(OS.str());
}
CXString clang_constructUSR_ObjCCategory(const char *class_name,
const char *category_name) {
SmallString<128> Buf(getUSRSpacePrefix());
llvm::raw_svector_ostream OS(Buf);
generateUSRForObjCCategory(class_name, category_name, OS);
return cxstring::createDup(OS.str());
}
CXString clang_constructUSR_ObjCProperty(const char *property,
CXString classUSR) {
SmallString<128> Buf(getUSRSpacePrefix());
llvm::raw_svector_ostream OS(Buf);
OS << extractUSRSuffix(clang_getCString(classUSR));
generateUSRForObjCProperty(property, /*isClassProp=*/false, OS);
return cxstring::createDup(OS.str());
}
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