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028936ada1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6683 91177308-0d34-0410-b5e6-96231b3b80d8
587 lines
16 KiB
C++
587 lines
16 KiB
C++
//===- Record.h - Classes to represent Table Records ------------*- C++ -*-===//
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//
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//
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//===----------------------------------------------------------------------===//
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#ifndef RECORD_H
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#define RECORD_H
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#include <string>
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#include <vector>
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#include <map>
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#include <iostream>
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#include <assert.h>
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class Init;
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class UnsetInit;
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class BitInit;
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class BitsInit;
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class IntInit;
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class StringInit;
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class ListInit;
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class DefInit;
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class TypedInit;
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class VarInit;
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class FieldInit;
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class VarBitInit;
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class Record;
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//===----------------------------------------------------------------------===//
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// Type Classes
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//===----------------------------------------------------------------------===//
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struct RecTy {
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virtual ~RecTy() {}
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virtual Init *convertValue( UnsetInit *UI) { return 0; }
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virtual Init *convertValue( BitInit *BI) { return 0; }
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virtual Init *convertValue( BitsInit *BI) { return 0; }
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virtual Init *convertValue( IntInit *II) { return 0; }
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virtual Init *convertValue(StringInit *SI) { return 0; }
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virtual Init *convertValue( ListInit *LI) { return 0; }
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virtual Init *convertValue(VarBitInit *VB) { return 0; }
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virtual Init *convertValue( DefInit *DI) { return 0; }
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virtual Init *convertValue( TypedInit *TI) { return 0; }
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virtual Init *convertValue( VarInit *VI) {
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return convertValue((TypedInit*)VI);
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}
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virtual Init *convertValue( FieldInit *FI) {
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return convertValue((TypedInit*)FI);
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}
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virtual void print(std::ostream &OS) const = 0;
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void dump() const;
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};
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inline std::ostream &operator<<(std::ostream &OS, const RecTy &Ty) {
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Ty.print(OS);
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return OS;
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}
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/// BitRecTy - 'bit' - Represent a single bit
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///
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struct BitRecTy : public RecTy {
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Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
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Init *convertValue(BitInit *BI) { return (Init*)BI; }
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Init *convertValue(BitsInit *BI);
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Init *convertValue(IntInit *II);
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Init *convertValue(TypedInit *VI);
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Init *convertValue(VarBitInit *VB) { return (Init*)VB; }
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void print(std::ostream &OS) const { OS << "bit"; }
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};
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/// BitsRecTy - 'bits<n>' - Represent a fixed number of bits
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///
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class BitsRecTy : public RecTy {
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unsigned Size;
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public:
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BitsRecTy(unsigned Sz) : Size(Sz) {}
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unsigned getNumBits() const { return Size; }
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Init *convertValue(UnsetInit *UI);
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Init *convertValue(BitInit *UI);
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Init *convertValue(BitsInit *BI);
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Init *convertValue(IntInit *II);
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Init *convertValue(TypedInit *VI);
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void print(std::ostream &OS) const { OS << "bits<" << Size << ">"; }
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};
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/// IntRecTy - 'int' - Represent an integer value of no particular size
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///
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struct IntRecTy : public RecTy {
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Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
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Init *convertValue(IntInit *II) { return (Init*)II; }
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Init *convertValue(BitsInit *BI);
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Init *convertValue(TypedInit *TI);
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void print(std::ostream &OS) const { OS << "int"; }
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};
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/// StringRecTy - 'string' - Represent an string value
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///
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struct StringRecTy : public RecTy {
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Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
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Init *convertValue(StringInit *SI) { return (Init*)SI; }
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Init *convertValue(TypedInit *VI);
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void print(std::ostream &OS) const { OS << "string"; }
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};
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/// ListRecTy - 'list<class>' - Represent a list defs, all of which must be
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/// derived from the specified class.
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///
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class ListRecTy : public RecTy {
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Record *Class;
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public:
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ListRecTy(Record *C) : Class(C) {}
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Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
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Init *convertValue(ListInit *LI);
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void print(std::ostream &OS) const;
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};
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/// RecordRecTy - '<classname>' - Represent an instance of a class, such as:
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/// (R32 X = EAX).
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///
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class RecordRecTy : public RecTy {
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Record *Rec;
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public:
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RecordRecTy(Record *R) : Rec(R) {}
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Record *getRecord() const { return Rec; }
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Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
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Init *convertValue( DefInit *DI);
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void print(std::ostream &OS) const;
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};
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//===----------------------------------------------------------------------===//
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// Initializer Classes
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//===----------------------------------------------------------------------===//
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struct Init {
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virtual ~Init() {}
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/// isComplete - This virtual method should be overridden by values that may
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/// not be completely specified yet.
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virtual bool isComplete() const { return true; }
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/// print - Print out this value.
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virtual void print(std::ostream &OS) const = 0;
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/// dump - Debugging method that may be called through a debugger, just
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/// invokes print on cerr.
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void dump() const;
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/// convertInitializerTo - This virtual function is a simple call-back
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/// function that should be overridden to call the appropriate
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/// RecTy::convertValue method.
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///
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virtual Init *convertInitializerTo(RecTy *Ty) = 0;
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/// convertInitializerBitRange - This method is used to implement the bitrange
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/// selection operator. Given an initializer, it selects the specified bits
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/// out, returning them as a new init of bits type. If it is not legal to use
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/// the bit subscript operator on this initializer, return null.
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///
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virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits) {
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return 0;
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}
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/// getFieldType - This method is used to implement the FieldInit class.
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/// Implementors of this method should return the type of the named field if
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/// they are of record type.
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///
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virtual RecTy *getFieldType(const std::string &FieldName) const { return 0; }
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/// getFieldInit - This method complements getFieldType to return the
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/// initializer for the specified field. If getFieldType returns non-null
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/// this method should return non-null, otherwise it returns null.
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///
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virtual Init *getFieldInit(Record &R, const std::string &FieldName) const {
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return 0;
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}
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/// resolveReferences - This method is used by classes that refer to other
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/// variables which may not be defined at the time they expression is formed.
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/// If a value is set for the variable later, this method will be called on
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/// users of the value to allow the value to propagate out.
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///
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virtual Init *resolveReferences(Record &R) { return this; }
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};
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inline std::ostream &operator<<(std::ostream &OS, const Init &I) {
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I.print(OS); return OS;
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}
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/// UnsetInit - ? - Represents an uninitialized value
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///
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struct UnsetInit : public Init {
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual bool isComplete() const { return false; }
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virtual void print(std::ostream &OS) const { OS << "?"; }
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};
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/// BitInit - true/false - Represent a concrete initializer for a bit.
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///
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class BitInit : public Init {
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bool Value;
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public:
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BitInit(bool V) : Value(V) {}
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bool getValue() const { return Value; }
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual void print(std::ostream &OS) const { OS << (Value ? "1" : "0"); }
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};
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/// BitsInit - { a, b, c } - Represents an initializer for a BitsRecTy value.
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/// It contains a vector of bits, whose size is determined by the type.
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///
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class BitsInit : public Init {
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std::vector<Init*> Bits;
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public:
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BitsInit(unsigned Size) : Bits(Size) {}
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unsigned getNumBits() const { return Bits.size(); }
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Init *getBit(unsigned Bit) const {
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assert(Bit < Bits.size() && "Bit index out of range!");
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return Bits[Bit];
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}
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void setBit(unsigned Bit, Init *V) {
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assert(Bit < Bits.size() && "Bit index out of range!");
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assert(Bits[Bit] == 0 && "Bit already set!");
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Bits[Bit] = V;
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}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
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virtual bool isComplete() const {
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for (unsigned i = 0; i != getNumBits(); ++i)
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if (!getBit(i)->isComplete()) return false;
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return true;
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}
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virtual void print(std::ostream &OS) const;
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virtual Init *resolveReferences(Record &R);
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// printXX - Print this bitstream with the specified format, returning true if
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// it is not possible.
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bool printInHex(std::ostream &OS) const;
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bool printAsVariable(std::ostream &OS) const;
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bool printAsUnset(std::ostream &OS) const;
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};
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/// IntInit - 7 - Represent an initalization by a literal integer value.
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///
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class IntInit : public Init {
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int Value;
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public:
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IntInit(int V) : Value(V) {}
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int getValue() const { return Value; }
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
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virtual void print(std::ostream &OS) const { OS << Value; }
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};
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/// StringInit - "foo" - Represent an initialization by a string value.
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///
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class StringInit : public Init {
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std::string Value;
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public:
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StringInit(const std::string &V) : Value(V) {}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual void print(std::ostream &OS) const { OS << "\"" << Value << "\""; }
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};
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/// ListInit - [AL, AH, CL] - Represent a list of defs
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///
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class ListInit : public Init {
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std::vector<Record*> Records;
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public:
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ListInit(std::vector<Record*> &Rs) {
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Records.swap(Rs);
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}
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unsigned getSize() const { return Records.size(); }
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Record *getElement(unsigned i) const {
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assert(i < Records.size() && "List element index out of range!");
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return Records[i];
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}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual void print(std::ostream &OS) const;
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};
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/// TypedInit - This is the common super-class of types that have a specific,
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/// explicit, type.
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///
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class TypedInit : public Init {
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RecTy *Ty;
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public:
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TypedInit(RecTy *T) : Ty(T) {}
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RecTy *getType() const { return Ty; }
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/// resolveBitReference - This method is used to implement
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/// VarBitInit::resolveReferences. If the bit is able to be resolved, we
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/// simply return the resolved value, otherwise we return this.
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///
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virtual Init *resolveBitReference(Record &R, unsigned Bit) = 0;
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};
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/// VarInit - 'Opcode' - Represent a reference to an entire variable object.
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///
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class VarInit : public TypedInit {
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std::string VarName;
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public:
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VarInit(const std::string &VN, RecTy *T) : TypedInit(T), VarName(VN) {}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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const std::string &getName() const { return VarName; }
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virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
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virtual Init *resolveBitReference(Record &R, unsigned Bit);
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virtual RecTy *getFieldType(const std::string &FieldName) const;
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virtual Init *getFieldInit(Record &R, const std::string &FieldName) const;
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virtual void print(std::ostream &OS) const { OS << VarName; }
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};
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/// VarBitInit - Opcode{0} - Represent access to one bit of a variable or field.
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///
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class VarBitInit : public Init {
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TypedInit *TI;
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unsigned Bit;
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public:
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VarBitInit(TypedInit *T, unsigned B) : TI(T), Bit(B) {
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assert(T->getType() && dynamic_cast<BitsRecTy*>(T->getType()) &&
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((BitsRecTy*)T->getType())->getNumBits() > B &&
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"Illegal VarBitInit expression!");
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}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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TypedInit *getVariable() const { return TI; }
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unsigned getBitNum() const { return Bit; }
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virtual void print(std::ostream &OS) const {
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TI->print(OS); OS << "{" << Bit << "}";
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}
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virtual Init *resolveReferences(Record &R);
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};
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/// DefInit - AL - Represent a reference to a 'def' in the description
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///
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class DefInit : public Init {
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Record *Def;
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public:
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DefInit(Record *D) : Def(D) {}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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Record *getDef() const { return Def; }
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//virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
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virtual RecTy *getFieldType(const std::string &FieldName) const;
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virtual Init *getFieldInit(Record &R, const std::string &FieldName) const;
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virtual void print(std::ostream &OS) const;
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};
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/// FieldInit - X.Y - Represent a reference to a subfield of a variable
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///
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class FieldInit : public TypedInit {
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Init *Rec; // Record we are referring to
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std::string FieldName; // Field we are accessing
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public:
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FieldInit(Init *R, const std::string &FN)
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: TypedInit(R->getFieldType(FN)), Rec(R), FieldName(FN) {
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assert(getType() && "FieldInit with non-record type!");
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}
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virtual Init *convertInitializerTo(RecTy *Ty) {
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return Ty->convertValue(this);
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}
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virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
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virtual Init *resolveBitReference(Record &R, unsigned Bit);
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virtual void print(std::ostream &OS) const {
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Rec->print(OS); OS << "." << FieldName;
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}
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};
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//===----------------------------------------------------------------------===//
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// High-Level Classes
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//===----------------------------------------------------------------------===//
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class RecordVal {
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std::string Name;
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RecTy *Ty;
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unsigned Prefix;
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Init *Value;
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public:
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RecordVal(const std::string &N, RecTy *T, unsigned P);
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const std::string &getName() const { return Name; }
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unsigned getPrefix() const { return Prefix; }
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RecTy *getType() const { return Ty; }
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Init *getValue() const { return Value; }
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bool setValue(Init *V) {
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if (V) {
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Value = V->convertInitializerTo(Ty);
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return Value == 0;
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}
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Value = 0;
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return false;
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}
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void dump() const;
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void print(std::ostream &OS, bool PrintSem = true) const;
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};
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inline std::ostream &operator<<(std::ostream &OS, const RecordVal &RV) {
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RV.print(OS << " ");
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return OS;
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}
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struct Record {
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const std::string Name;
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std::vector<std::string> TemplateArgs;
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std::vector<RecordVal> Values;
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std::vector<Record*> SuperClasses;
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public:
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Record(const std::string &N) : Name(N) {}
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~Record() {}
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const std::string &getName() const { return Name; }
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const std::vector<std::string> &getTemplateArgs() const {
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return TemplateArgs;
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}
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const std::vector<RecordVal> &getValues() const { return Values; }
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const std::vector<Record*> &getSuperClasses() const { return SuperClasses; }
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bool isTemplateArg(const std::string &Name) const {
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for (unsigned i = 0, e = TemplateArgs.size(); i != e; ++i)
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if (TemplateArgs[i] == Name) return true;
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return false;
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}
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const RecordVal *getValue(const std::string &Name) const {
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for (unsigned i = 0, e = Values.size(); i != e; ++i)
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if (Values[i].getName() == Name) return &Values[i];
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return 0;
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}
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RecordVal *getValue(const std::string &Name) {
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for (unsigned i = 0, e = Values.size(); i != e; ++i)
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if (Values[i].getName() == Name) return &Values[i];
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return 0;
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}
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void addTemplateArg(const std::string &Name) {
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assert(!isTemplateArg(Name) && "Template arg already defined!");
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TemplateArgs.push_back(Name);
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}
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void addValue(const RecordVal &RV) {
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assert(getValue(RV.getName()) == 0 && "Value already added!");
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Values.push_back(RV);
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}
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bool isSubClassOf(Record *R) const {
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for (unsigned i = 0, e = SuperClasses.size(); i != e; ++i)
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if (SuperClasses[i] == R)
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return true;
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return false;
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}
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void addSuperClass(Record *R) {
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assert(!isSubClassOf(R) && "Already subclassing record!");
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SuperClasses.push_back(R);
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}
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// resolveReferences - If there are any field references that refer to fields
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// that have been filled in, we can propagate the values now.
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//
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void resolveReferences();
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void dump() const;
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};
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std::ostream &operator<<(std::ostream &OS, const Record &R);
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class RecordKeeper {
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std::map<std::string, Record*> Classes, Defs;
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public:
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~RecordKeeper() {
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for (std::map<std::string, Record*>::iterator I = Classes.begin(),
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E = Classes.end(); I != E; ++I)
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delete I->second;
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for (std::map<std::string, Record*>::iterator I = Defs.begin(),
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E = Defs.end(); I != E; ++I)
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delete I->second;
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}
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const std::map<std::string, Record*> &getClasses() const { return Classes; }
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const std::map<std::string, Record*> &getDefs() const { return Defs; }
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Record *getClass(const std::string &Name) const {
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std::map<std::string, Record*>::const_iterator I = Classes.find(Name);
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return I == Classes.end() ? 0 : I->second;
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}
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Record *getDef(const std::string &Name) const {
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std::map<std::string, Record*>::const_iterator I = Defs.find(Name);
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return I == Defs.end() ? 0 : I->second;
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}
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void addClass(Record *R) {
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assert(getClass(R->getName()) == 0 && "Class already exists!");
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Classes.insert(std::make_pair(R->getName(), R));
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}
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void addDef(Record *R) {
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assert(getDef(R->getName()) == 0 && "Def already exists!");
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Defs.insert(std::make_pair(R->getName(), R));
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}
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void dump() const;
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};
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std::ostream &operator<<(std::ostream &OS, const RecordKeeper &RK);
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extern RecordKeeper Records;
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#endif
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