}
};
+ /// ForeachLoop - Record the iteration state associated with a for loop.
+ /// This is used to instantiate items in the loop body.
+ struct ForeachLoop {
+ Init *IterVar;
+ Init *ListValue;
+
+ ForeachLoop(Init *IVar, Init *LValue) : IterVar(IVar), ListValue(LValue) {};
+ };
+
class TGParser {
TGLexer Lex;
std::vector<std::vector<LetRecord> > LetStack;
std::map<std::string, MultiClass*> MultiClasses;
+ /// Loops - Keep track of any foreach loops we are within.
+ ///
+ typedef std::vector<ForeachLoop> LoopVector;
+ LoopVector Loops;
+
/// CurMultiClass - If we are parsing a 'multiclass' definition, this is the
/// current value.
MultiClass *CurMultiClass;
// in the middle of creating in. For those situations, allow the
// parser to ignore missing object errors.
enum IDParseMode {
- ParseValueMode, // We are parsing a value we expect to look up.
- ParseNameMode // We are parsing a name of an object that does not yet exist.
+ ParseValueMode, // We are parsing a value we expect to look up.
+ ParseNameMode, // We are parsing a name of an object that does not yet
+ // exist.
+ ParseForeachMode // We are parsing a foreach init.
};
public:
const std::vector<std::string> &getDependencies() const {
return Lex.getDependencies();
}
+
private: // Semantic analysis methods.
bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV);
bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName,
bool AddSubMultiClass(MultiClass *CurMC,
SubMultiClassReference &SubMultiClass);
+ // IterRecord: Map an iterator name to a value.
+ struct IterRecord {
+ Init *IterVar;
+ Init *IterValue;
+ IterRecord(Init *Var, Init *Val) : IterVar(Var), IterValue(Val) {}
+ };
+
+ // IterSet: The set of all iterator values at some point in the
+ // iteration space.
+ typedef std::vector<IterRecord> IterSet;
+
+ bool ProcessForeachDefs(Record *CurRec, MultiClass *CurMultiClass,
+ SMLoc Loc);
+ bool ProcessForeachDefs(Record *CurRec, MultiClass *CurMultiClass,
+ SMLoc Loc, IterSet &IterVals, ForeachLoop &CurLoop,
+ LoopVector::iterator NextLoop);
+
private: // Parser methods.
bool ParseObjectList(MultiClass *MC = 0);
bool ParseObject(MultiClass *MC);
SMLoc DefmPrefixLoc);
bool ParseDefm(MultiClass *CurMultiClass);
bool ParseDef(MultiClass *CurMultiClass);
+ bool ParseForeach(MultiClass *CurMultiClass);
bool ParseTopLevelLet(MultiClass *CurMultiClass);
std::vector<LetRecord> ParseLetList();
bool ParseTemplateArgList(Record *CurRec);
Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs);
+ Init *ParseForeachDeclaration(Init *&ForeachListValue);
SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm);
SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC);