Add first pieces of support for parsing and representing
extern "C" in C++ mode. Patch by Mike Stump!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45904 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Parse/ParseDeclCXX.cpp b/Parse/ParseDeclCXX.cpp
index 20c1fab..46dcb57 100644
--- a/Parse/ParseDeclCXX.cpp
+++ b/Parse/ParseDeclCXX.cpp
@@ -80,3 +80,40 @@
return 0;
}
+
+/// ParseLinkage - We know that the current token is a string_literal
+/// and just before that, that extern was seen.
+///
+/// linkage-specification: [C++ 7.5p2: dcl.link]
+/// 'extern' string-literal '{' declaration-seq[opt] '}'
+/// 'extern' string-literal declaration
+///
+Parser::DeclTy *Parser::ParseLinkage(unsigned Context) {
+ assert(Tok.is(tok::string_literal) && "Not a stringliteral!");
+ llvm::SmallVector<char, 8> LangBuffer;
+ // LangBuffer is guaranteed to be big enough.
+ LangBuffer.resize(Tok.getLength());
+ const char *LangBufPtr = &LangBuffer[0];
+ unsigned StrSize = PP.getSpelling(Tok, LangBufPtr);
+
+ SourceLocation Loc = ConsumeStringToken();
+ DeclTy *D = 0;
+ SourceLocation LBrace, RBrace;
+
+ if (Tok.isNot(tok::l_brace)) {
+ D = ParseDeclaration(Context);
+ } else {
+ LBrace = ConsumeBrace();
+ while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
+ // FIXME capture the decls.
+ D = ParseExternalDeclaration();
+ }
+
+ RBrace = MatchRHSPunctuation(tok::r_brace, LBrace);
+ }
+
+ if (!D)
+ return 0;
+
+ return Actions.ActOnLinkageSpec(Loc, LBrace, RBrace, LangBufPtr, StrSize, D);
+}