#include "llvm/Type.h"
#include <vector>
-// Future derived types: SIMD packed format
+class DerivedType : public Type {
+ // AbstractTypeUsers - Implement a list of the users that need to be notified
+ // if I am a type, and I get resolved into a more concrete type.
+ //
+ ///// FIXME: kill mutable nonsense when Type's are not const
+ mutable vector<AbstractTypeUser *> AbstractTypeUsers;
+
+ char isRefining; // Used for recursive types
+
+protected:
+ inline DerivedType(const string &Name, PrimitiveID id) : Type(Name, id) {
+ isRefining = false;
+ }
+
+ // typeIsRefined - Notify AbstractTypeUsers of this type that the current type
+ // has been refined a bit. The pointer is still valid and still should be
+ // used, but the subtypes have changed.
+ //
+ void typeIsRefined();
+
+ // setDerivedTypeProperties - Based on the subtypes, set the name of this
+ // type so that it is printed nicely by the type printer. Also calculate
+ // whether this type is abstract or not. Used by the constructor and when
+ // the type is refined.
+ //
+ void setDerivedTypeProperties();
-class MethodType : public Type {
public:
- typedef vector<const Type*> ParamTypes;
+
+ //===--------------------------------------------------------------------===//
+ // Abstract Type handling methods - These types have special lifetimes, which
+ // are managed by (add|remove)AbstractTypeUser. See comments in
+ // AbstractTypeUser.h for more information.
+
+ // addAbstractTypeUser - Notify an abstract type that there is a new user of
+ // it. This function is called primarily by the PATypeHandle class.
+ //
+ void addAbstractTypeUser(AbstractTypeUser *U) const {
+ assert(isAbstract() && "addAbstractTypeUser: Current type not abstract!");
+#if 0
+ cerr << " addAbstractTypeUser[" << (void*)this << ", " << getDescription()
+ << "][" << AbstractTypeUsers.size() << "] User = " << U << endl;
+#endif
+ AbstractTypeUsers.push_back(U);
+ }
+
+ // removeAbstractTypeUser - Notify an abstract type that a user of the class
+ // no longer has a handle to the type. This function is called primarily by
+ // the PATypeHandle class. When there are no users of the abstract type, it
+ // is anihilated, because there is no way to get a reference to it ever again.
+ //
+ void removeAbstractTypeUser(AbstractTypeUser *U) const;
+
+ // getNumAbstractTypeUsers - Return the number of users registered to the type
+ inline unsigned getNumAbstractTypeUsers() const {
+ assert(isAbstract() && "getNumAbstractTypeUsers: Type not abstract!");
+ return AbstractTypeUsers.size();
+ }
+
+ // refineAbstractTypeTo - This function is used to when it is discovered that
+ // the 'this' abstract type is actually equivalent to the NewType specified.
+ // This causes all users of 'this' to switch to reference the more concrete
+ // type NewType and for 'this' to be deleted.
+ //
+ void refineAbstractTypeTo(const Type *NewType);
+};
+
+
+
+
+class MethodType : public DerivedType {
+public:
+ typedef vector<PATypeHandle<Type> > ParamTypes;
private:
- const Type *ResultType;
+ PATypeHandle<Type> ResultType;
ParamTypes ParamTys;
bool isVarArgs;
// Private ctor - Only can be created by a static member...
MethodType(const Type *Result, const vector<const Type*> &Params,
- bool IsVarArgs, const string &Name);
+ bool IsVarArgs);
+
public:
inline bool isVarArg() const { return isVarArgs; }
inline const Type *getReturnType() const { return ResultType; }
inline const ParamTypes &getParamTypes() const { return ParamTys; }
- static const MethodType *getMethodType(const Type *Result,
- const ParamTypes &Params);
- static const MethodType *get(const Type *Result, const ParamTypes &Params) {
- return getMethodType(Result, Params);
+
+ virtual const Type *getContainedType(unsigned i) const {
+ return i == 0 ? ResultType : (i <= ParamTys.size() ? ParamTys[i-1] : 0);
}
+ virtual unsigned getNumContainedTypes() const { return ParamTys.size()+1; }
+
+ // refineAbstractType - Called when a contained type is found to be more
+ // concrete - this could potentially change us from an abstract type to a
+ // concrete type.
+ //
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+
+ static MethodType *get(const Type *Result, const vector<const Type*> &Params);
};
-class ArrayType : public Type {
+class ArrayType : public DerivedType {
private:
- const Type *ElementType;
+ PATypeHandle<Type> ElementType;
int NumElements; // >= 0 for sized array, -1 for unbounded/unknown array
ArrayType(const ArrayType &); // Do not implement
// Private ctor - Only can be created by a static member...
- ArrayType(const Type *ElType, int NumEl, const string &Name);
+ ArrayType(const Type *ElType, int NumEl);
+
public:
inline const Type *getElementType() const { return ElementType; }
inline bool isSized() const { return NumElements >= 0; }
inline bool isUnsized() const { return NumElements == -1; }
- static const ArrayType *getArrayType(const Type *ElementType,
- int NumElements = -1);
- static const ArrayType *get(const Type *ElementType, int NumElements = -1) {
- return getArrayType(ElementType, NumElements);
+ virtual const Type *getContainedType(unsigned i) const {
+ return i == 0 ? ElementType : 0;
}
+ virtual unsigned getNumContainedTypes() const { return 1; }
+
+ // refineAbstractType - Called when a contained type is found to be more
+ // concrete - this could potentially change us from an abstract type to a
+ // concrete type.
+ //
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+
+ static ArrayType *get(const Type *ElementType, int NumElements = -1);
};
-class StructType : public Type {
+class StructType : public DerivedType {
public:
- typedef vector<const Type*> ElementTypes;
+ typedef vector<PATypeHandle<Type> > ElementTypes;
private:
- ElementTypes ETypes;
+ ElementTypes ETypes; // Element types of struct
StructType(const StructType &); // Do not implement
const StructType &operator=(const StructType &); // Do not implement
-
+
protected:
// This should really be private, but it squelches a bogus warning
// from GCC to make them protected: warning: `class StructType' only
// defines private constructors and has no friends
// Private ctor - Only can be created by a static member...
- StructType(const vector<const Type*> &Types, const string &Name);
+ StructType(const vector<const Type*> &Types);
public:
inline const ElementTypes &getElementTypes() const { return ETypes; }
- static const StructType *getStructType(const ElementTypes &Params);
- static const StructType *get(const ElementTypes &Params) {
- return getStructType(Params);
+
+ virtual const Type *getContainedType(unsigned i) const {
+ return i < ETypes.size() ? ETypes[i] : 0;
}
+ virtual unsigned getNumContainedTypes() const { return ETypes.size(); }
+
+ // refineAbstractType - Called when a contained type is found to be more
+ // concrete - this could potentially change us from an abstract type to a
+ // concrete type.
+ //
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+
+ static StructType *get(const vector<const Type*> &Params);
};
-class PointerType : public Type {
+class PointerType : public DerivedType {
private:
- const Type *ValueType;
+ PATypeHandle<Type> ValueType;
PointerType(const PointerType &); // Do not implement
const PointerType &operator=(const PointerType &); // Do not implement
// Private ctor - Only can be created by a static member...
PointerType(const Type *ElType);
+
public:
inline const Type *getValueType() const { return ValueType; }
+ virtual const Type *getContainedType(unsigned i) const {
+ return i == 0 ? ValueType : 0;
+ }
+ virtual unsigned getNumContainedTypes() const { return 1; }
+
+ static PointerType *get(const Type *ElementType);
+
+ // refineAbstractType - Called when a contained type is found to be more
+ // concrete - this could potentially change us from an abstract type to a
+ // concrete type.
+ //
+ virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy);
+};
+
- static const PointerType *getPointerType(const Type *ElementType);
- static const PointerType *get(const Type *ElementType) {
- return getPointerType(ElementType);
+class OpaqueType : public DerivedType {
+private:
+ OpaqueType(const OpaqueType &); // Do not implement
+ const OpaqueType &operator=(const OpaqueType &); // Do not implement
+protected:
+ // This should really be private, but it squelches a bogus warning
+ // from GCC to make them protected: warning: `class OpaqueType' only
+ // defines private constructors and has no friends
+
+ // Private ctor - Only can be created by a static member...
+ OpaqueType();
+
+public:
+
+ // get - Static factory method for the OpaqueType class...
+ static OpaqueType *get() {
+ return new OpaqueType(); // All opaque types are distinct
}
};
+
+// Define some inline methods for the AbstractTypeUser.h:PATypeHandle class.
+// These are defined here because they MUST be inlined, yet are dependant on
+// the definition of the Type class. Of course Type derives from Value, which
+// contains an AbstractTypeUser instance, so there is no good way to factor out
+// the code. Hence this bit of uglyness.
+//
+template <class TypeSubClass> void PATypeHandle<TypeSubClass>::addUser() {
+ if (Ty->isAbstract())
+ Ty->castDerivedTypeAsserting()->addAbstractTypeUser(User);
+}
+template <class TypeSubClass> void PATypeHandle<TypeSubClass>::removeUser() {
+ if (Ty->isAbstract())
+ Ty->castDerivedTypeAsserting()->removeAbstractTypeUser(User);
+}
+
#endif
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