modern objc translation: Add translation of @autoreleasepool
statement. // rdar://11474836.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157359 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Rewrite/RewriteModernObjC.cpp b/lib/Rewrite/RewriteModernObjC.cpp
index 2edfe6c..93c9a1c 100644
--- a/lib/Rewrite/RewriteModernObjC.cpp
+++ b/lib/Rewrite/RewriteModernObjC.cpp
@@ -324,6 +324,7 @@
Stmt *RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp);
Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
+ Stmt *RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S);
Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S);
Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
@@ -1881,6 +1882,16 @@
return;
}
+Stmt *RewriteModernObjC::RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
+ SourceLocation startLoc = S->getAtLoc();
+ ReplaceText(startLoc, strlen("@autoreleasepool"), "/* @autoreleasepool */");
+ std::string buf;
+ buf = "{ __AtAutoreleasePool __autoreleasepool; ";
+ ReplaceText(S->getSubStmt()->getLocStart(), 1, buf);
+
+ return 0;
+}
+
Stmt *RewriteModernObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt();
bool noCatch = S->getNumCatchStmts() == 0;
@@ -5408,6 +5419,11 @@
return RewriteMessageExpr(MessExpr);
}
+ if (ObjCAutoreleasePoolStmt *StmtAutoRelease =
+ dyn_cast<ObjCAutoreleasePoolStmt>(S)) {
+ return RewriteObjCAutoreleasePoolStmt(StmtAutoRelease);
+ }
+
if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
return RewriteObjCTryStmt(StmtTry);
@@ -5887,6 +5903,15 @@
Preamble += " }\n";
Preamble += "};\n";
+ // Declaration required for implementation of @autoreleasepool statement.
+ Preamble += "extern \"C\" __declspec(dllimport) void * objc_autoreleasePoolPush(void);\n";
+ Preamble += "extern \"C\" __declspec(dllimport) void objc_autoreleasePoolPop(void *);\n\n";
+ Preamble += "struct __AtAutoreleasePool {\n";
+ Preamble += " __AtAutoreleasePool() {atautoreleasepoolobj = objc_autoreleasePoolPush();}\n";
+ Preamble += " ~__AtAutoreleasePool() {objc_autoreleasePoolPop(atautoreleasepoolobj);}\n";
+ Preamble += " void * atautoreleasepoolobj;\n";
+ Preamble += "};\n";
+
// NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long
// as this avoids warning in any 64bit/32bit compilation model.
Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n";