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Parse named metadata.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77410 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-07-29 00:34:02 +00:00
parent f457d1316d
commit eff2ab61b5
5 changed files with 56 additions and 1 deletions
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lib/AsmParser/LLParser.cpp
+36
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@@ -121,6 +121,7 @@ bool LLParser::ParseTopLevelEntities() {
case lltok::LocalVar: if (ParseNamedType()) return true; break;
case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
case lltok::Metadata: if (ParseStandaloneMetadata()) return true; break;
case lltok::NamedMD: if (ParseNamedMetadata()) return true; break;
// The Global variable production with no name can have many different
// optional leading prefixes, the production is:
@@ -409,6 +410,41 @@ bool LLParser::ParseMDNode(MetadataBase *&Node) {
return false;
}
///ParseNamedMetadata:
/// !foo = !{ !1, !2 }
bool LLParser::ParseNamedMetadata() {
assert(Lex.getKind() == lltok::NamedMD);
Lex.Lex();
std::string Name = Lex.getStrVal();
if (ParseToken(lltok::equal, "expected '=' here"))
return true;
if (Lex.getKind() != lltok::Metadata)
return TokError("Expected '!' here");
Lex.Lex();
if (Lex.getKind() != lltok::lbrace)
return TokError("Expected '{' here");
Lex.Lex();
SmallVector<MetadataBase *, 8> Elts;
do {
if (Lex.getKind() != lltok::Metadata)
return TokError("Expected '!' here");
Lex.Lex();
MetadataBase *N = 0;
if (ParseMDNode(N)) return true;
Elts.push_back(N);
} while (EatIfPresent(lltok::comma));
if (ParseToken(lltok::rbrace, "expected end of metadata node"))
return true;
NamedMDNode::Create(Name.c_str(), Name.length(),
Elts.data(), Elts.size(), M);
return false;
}
/// ParseStandaloneMetadata:
/// !42 = !{...}
bool LLParser::ParseStandaloneMetadata() {