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AsmParser: Abstract more of MDLocation parser, NFC

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226527 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-01-19 23:44:41 +00:00
parent 3a18dcb572
commit aec6749999
1 changed files with 27 additions and 16 deletions
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43
lib/AsmParser/LLParser.cpp
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@ -2992,7 +2992,12 @@ bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
return TokError("expected metadata type");
}
#define PARSE_MD_FIELD(NAME) \
#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
#define NOP_FIELD(NAME, TYPE, INIT)
#define REQUIRE_FIELD(NAME, TYPE, INIT) \
if (!NAME.Seen) \
return Error(ClosingLoc, "missing required field '" #NAME "'");
#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
do { \
if (Lex.getStrVal() == #NAME) { \
LocTy Loc = Lex.getLoc(); \
@ -3002,31 +3007,37 @@ bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
return false; \
} \
} while (0)
#define PARSE_MD_FIELDS() \
VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
do { \
LocTy ClosingLoc; \
if (ParseMDFieldsImpl([&]() -> bool { \
VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
}, ClosingLoc)) \
return true; \
VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
} while (false)
/// ParseMDLocationFields:
/// ::= !MDLocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
bool LLParser::ParseMDLocation(MDNode *&Result, bool IsDistinct) {
MDUnsignedField<uint32_t> line(0, ~0u >> 8);
MDUnsignedField<uint32_t> column(0, ~0u >> 16);
MDField scope;
MDField inlinedAt;
LocTy Loc;
if (ParseMDFieldsImpl([&]() -> bool {
PARSE_MD_FIELD(line);
PARSE_MD_FIELD(column);
PARSE_MD_FIELD(scope);
PARSE_MD_FIELD(inlinedAt);
return TokError(Twine("invalid field '") + Lex.getStrVal() + "'");
}, Loc))
return true;
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
OPTIONAL(line, MDUnsignedField<uint32_t>, (0, ~0u >> 8)); \
OPTIONAL(column, MDUnsignedField<uint32_t>, (0, ~0u >> 16)); \
REQUIRED(scope, MDField, ); \
OPTIONAL(inlinedAt, MDField, );
PARSE_MD_FIELDS();
#undef VISIT_MD_FIELDS
if (!scope.Seen)
return Error(Loc, "missing required field 'scope'");
auto get = (IsDistinct ? MDLocation::getDistinct : MDLocation::get);
Result = get(Context, line.Val, column.Val, scope.Val, inlinedAt.Val);
return false;
}
#undef PARSE_MD_FIELD
#undef NOP_FIELD
#undef REQUIRE_FIELD
#undef DECLARE_FIELD
/// ParseMetadataAsValue
/// ::= metadata i32 %local