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Initial support for Field Expressions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4848 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-12-02 16:42:52 +00:00
parent d00e8f1f83
commit a1651900e1
2 changed files with 68 additions and 0 deletions
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34
support/tools/TableGen/Record.h
View File

@ -20,6 +20,7 @@ class ListInit;
class VarInit;
class VarBitInit;
class DefInit;
class FieldInit;
class Record;
//===----------------------------------------------------------------------===//
@ -38,6 +39,7 @@ struct RecTy {
virtual Init *convertValue( VarInit *VI) { return 0; }
virtual Init *convertValue(VarBitInit *VB) { return 0; }
virtual Init *convertValue( DefInit *DI) { return 0; }
virtual Init *convertValue( FieldInit *FI) { return 0; }
virtual void print(std::ostream &OS) const = 0;
void dump() const;
@ -122,6 +124,8 @@ class RecordRecTy : public RecTy {
public:
RecordRecTy(Record *R) : Rec(R) {}
Record *getRecord() const { return Rec; }
Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
Init *convertValue( DefInit *DI);
@ -146,6 +150,12 @@ struct Init {
return 0;
}
/// getFieldType - This method is used to implement the FieldInit class.
/// Implementors of this method should return the type of the named field if
/// they are of record type.
///
virtual RecTy *getFieldType(const std::string &FieldName) const { return 0; }
virtual Init *resolveReferences(Record &R) { return this; }
};
@ -297,6 +307,8 @@ public:
RecTy *getType() const { return Ty; }
virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
virtual RecTy *getFieldType(const std::string &FieldName) const;
virtual bool isComplete() const { return true; }
virtual void print(std::ostream &OS) const { OS << VarName; }
@ -346,6 +358,28 @@ public:
};
/// FieldInit - X.Y - Represent a reference to a subfield of a variable
///
class FieldInit : public Init {
Init *Rec; // Record we are referring to
std::string FieldName; // Field we are accessing
RecTy *Ty; // The type of this expression
public:
FieldInit(Init *R, const std::string &FN)
: Rec(R), FieldName(FN), Ty(R->getFieldType(FN)) {
assert(Ty && "FieldInit with non-record type!");
}
virtual Init *convertInitializerTo(RecTy *Ty) {
return Ty->convertValue(this);
}
virtual bool isComplete() const { return true; }
virtual void print(std::ostream &OS) const {
Rec->print(OS); OS << "." << FieldName;
}
};
//===----------------------------------------------------------------------===//
// High-Level Classes

34
utils/TableGen/Record.h
View File

@ -20,6 +20,7 @@ class ListInit;
class VarInit;
class VarBitInit;
class DefInit;
class FieldInit;
class Record;
//===----------------------------------------------------------------------===//
@ -38,6 +39,7 @@ struct RecTy {
virtual Init *convertValue( VarInit *VI) { return 0; }
virtual Init *convertValue(VarBitInit *VB) { return 0; }
virtual Init *convertValue( DefInit *DI) { return 0; }
virtual Init *convertValue( FieldInit *FI) { return 0; }
virtual void print(std::ostream &OS) const = 0;
void dump() const;
@ -122,6 +124,8 @@ class RecordRecTy : public RecTy {
public:
RecordRecTy(Record *R) : Rec(R) {}
Record *getRecord() const { return Rec; }
Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
Init *convertValue( DefInit *DI);
@ -146,6 +150,12 @@ struct Init {
return 0;
}
/// getFieldType - This method is used to implement the FieldInit class.
/// Implementors of this method should return the type of the named field if
/// they are of record type.
///
virtual RecTy *getFieldType(const std::string &FieldName) const { return 0; }
virtual Init *resolveReferences(Record &R) { return this; }
};
@ -297,6 +307,8 @@ public:
RecTy *getType() const { return Ty; }
virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
virtual RecTy *getFieldType(const std::string &FieldName) const;
virtual bool isComplete() const { return true; }
virtual void print(std::ostream &OS) const { OS << VarName; }
@ -346,6 +358,28 @@ public:
};
/// FieldInit - X.Y - Represent a reference to a subfield of a variable
///
class FieldInit : public Init {
Init *Rec; // Record we are referring to
std::string FieldName; // Field we are accessing
RecTy *Ty; // The type of this expression
public:
FieldInit(Init *R, const std::string &FN)
: Rec(R), FieldName(FN), Ty(R->getFieldType(FN)) {
assert(Ty && "FieldInit with non-record type!");
}
virtual Init *convertInitializerTo(RecTy *Ty) {
return Ty->convertValue(this);
}
virtual bool isComplete() const { return true; }
virtual void print(std::ostream &OS) const {
Rec->print(OS); OS << "." << FieldName;
}
};
//===----------------------------------------------------------------------===//
// High-Level Classes