[arcmt] Integrate GC __weak into property attributes even when we don't have
the implementation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145224 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ARCMigrate/Transforms.cpp b/lib/ARCMigrate/Transforms.cpp
index c1a573c..e208e84 100644
--- a/lib/ARCMigrate/Transforms.cpp
+++ b/lib/ARCMigrate/Transforms.cpp
@@ -446,6 +446,55 @@
return false;
}
+bool MigrationContext::addPropertyAttribute(StringRef attr,
+ SourceLocation atLoc) {
+ if (atLoc.isMacroID())
+ return false;
+
+ SourceManager &SM = Pass.Ctx.getSourceManager();
+
+ // Break down the source location.
+ std::pair<FileID, unsigned> locInfo = SM.getDecomposedLoc(atLoc);
+
+ // Try to load the file buffer.
+ bool invalidTemp = false;
+ StringRef file = SM.getBufferData(locInfo.first, &invalidTemp);
+ if (invalidTemp)
+ return false;
+
+ const char *tokenBegin = file.data() + locInfo.second;
+
+ // Lex from the start of the given location.
+ Lexer lexer(SM.getLocForStartOfFile(locInfo.first),
+ Pass.Ctx.getLangOptions(),
+ file.begin(), tokenBegin, file.end());
+ Token tok;
+ lexer.LexFromRawLexer(tok);
+ if (tok.isNot(tok::at)) return false;
+ lexer.LexFromRawLexer(tok);
+ if (tok.isNot(tok::raw_identifier)) return false;
+ if (StringRef(tok.getRawIdentifierData(), tok.getLength())
+ != "property")
+ return false;
+ lexer.LexFromRawLexer(tok);
+
+ if (tok.isNot(tok::l_paren)) {
+ Pass.TA.insert(tok.getLocation(), std::string("(") + attr.str() + ") ");
+ return true;
+ }
+
+ lexer.LexFromRawLexer(tok);
+ if (tok.is(tok::r_paren)) {
+ Pass.TA.insert(tok.getLocation(), attr);
+ return true;
+ }
+
+ if (tok.isNot(tok::raw_identifier)) return false;
+
+ Pass.TA.insert(tok.getLocation(), std::string(attr) + ", ");
+ return true;
+}
+
void MigrationContext::traverse(TranslationUnitDecl *TU) {
for (traverser_iterator
I = traversers_begin(), E = traversers_end(); I != E; ++I)