1 //===- Record.h - Classes to represent Table Records ------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the main TableGen data structures, including the TableGen
11 // types, values, and high-level data structures.
13 //===----------------------------------------------------------------------===//
26 // RecTy subclasses...
51 class VarListElementInit;
56 //===----------------------------------------------------------------------===//
58 //===----------------------------------------------------------------------===//
63 virtual void print(std::ostream &OS) const = 0;
66 /// typeIsConvertibleTo - Return true if all values of 'this' type can be
67 /// converted to the specified type.
68 virtual bool typeIsConvertibleTo(const RecTy *RHS) const = 0;
70 public: // These methods should only be called from subclasses of Init
71 virtual Init *convertValue( UnsetInit *UI) { return 0; }
72 virtual Init *convertValue( BitInit *BI) { return 0; }
73 virtual Init *convertValue( BitsInit *BI) { return 0; }
74 virtual Init *convertValue( IntInit *II) { return 0; }
75 virtual Init *convertValue(StringInit *SI) { return 0; }
76 virtual Init *convertValue( ListInit *LI) { return 0; }
77 virtual Init *convertValue( CodeInit *CI) { return 0; }
78 virtual Init *convertValue(VarBitInit *VB) { return 0; }
79 virtual Init *convertValue( DefInit *DI) { return 0; }
80 virtual Init *convertValue( DagInit *DI) { return 0; }
81 virtual Init *convertValue( TypedInit *TI) { return 0; }
82 virtual Init *convertValue( VarInit *VI) {
83 return convertValue((TypedInit*)VI);
85 virtual Init *convertValue( FieldInit *FI) {
86 return convertValue((TypedInit*)FI);
89 public: // These methods should only be called by subclasses of RecTy.
90 // baseClassOf - These virtual methods should be overloaded to return true iff
91 // all values of type 'RHS' can be converted to the 'this' type.
92 virtual bool baseClassOf(const BitRecTy *RHS) const { return false; }
93 virtual bool baseClassOf(const BitsRecTy *RHS) const { return false; }
94 virtual bool baseClassOf(const IntRecTy *RHS) const { return false; }
95 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
96 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
97 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
98 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
99 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
102 inline std::ostream &operator<<(std::ostream &OS, const RecTy &Ty) {
108 /// BitRecTy - 'bit' - Represent a single bit
110 class BitRecTy : public RecTy {
112 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
113 virtual Init *convertValue( BitInit *BI) { return (Init*)BI; }
114 virtual Init *convertValue( BitsInit *BI);
115 virtual Init *convertValue( IntInit *II);
116 virtual Init *convertValue(StringInit *SI) { return 0; }
117 virtual Init *convertValue( ListInit *LI) { return 0; }
118 virtual Init *convertValue( CodeInit *CI) { return 0; }
119 virtual Init *convertValue(VarBitInit *VB) { return (Init*)VB; }
120 virtual Init *convertValue( DefInit *DI) { return 0; }
121 virtual Init *convertValue( DagInit *DI) { return 0; }
122 virtual Init *convertValue( TypedInit *TI);
123 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
124 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
126 void print(std::ostream &OS) const { OS << "bit"; }
128 bool typeIsConvertibleTo(const RecTy *RHS) const {
129 return RHS->baseClassOf(this);
131 virtual bool baseClassOf(const BitRecTy *RHS) const { return true; }
132 virtual bool baseClassOf(const BitsRecTy *RHS) const;
133 virtual bool baseClassOf(const IntRecTy *RHS) const { return true; }
134 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
135 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
136 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
137 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
138 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
143 // BitsRecTy - 'bits<n>' - Represent a fixed number of bits
144 /// BitsRecTy - 'bits<n>' - Represent a fixed number of bits
146 class BitsRecTy : public RecTy {
149 BitsRecTy(unsigned Sz) : Size(Sz) {}
151 unsigned getNumBits() const { return Size; }
153 virtual Init *convertValue( UnsetInit *UI);
154 virtual Init *convertValue( BitInit *UI);
155 virtual Init *convertValue( BitsInit *BI);
156 virtual Init *convertValue( IntInit *II);
157 virtual Init *convertValue(StringInit *SI) { return 0; }
158 virtual Init *convertValue( ListInit *LI) { return 0; }
159 virtual Init *convertValue( CodeInit *CI) { return 0; }
160 virtual Init *convertValue(VarBitInit *VB) { return 0; }
161 virtual Init *convertValue( DefInit *DI) { return 0; }
162 virtual Init *convertValue( DagInit *DI) { return 0; }
163 virtual Init *convertValue( TypedInit *TI);
164 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
165 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
168 void print(std::ostream &OS) const { OS << "bits<" << Size << ">"; }
170 bool typeIsConvertibleTo(const RecTy *RHS) const {
171 return RHS->baseClassOf(this);
173 virtual bool baseClassOf(const BitRecTy *RHS) const { return Size == 1; }
174 virtual bool baseClassOf(const BitsRecTy *RHS) const {
175 return RHS->Size == Size;
177 virtual bool baseClassOf(const IntRecTy *RHS) const { return true; }
178 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
179 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
180 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
181 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
182 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
187 /// IntRecTy - 'int' - Represent an integer value of no particular size
189 class IntRecTy : public RecTy {
191 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
192 virtual Init *convertValue( BitInit *BI);
193 virtual Init *convertValue( BitsInit *BI);
194 virtual Init *convertValue( IntInit *II) { return (Init*)II; }
195 virtual Init *convertValue(StringInit *SI) { return 0; }
196 virtual Init *convertValue( ListInit *LI) { return 0; }
197 virtual Init *convertValue( CodeInit *CI) { return 0; }
198 virtual Init *convertValue(VarBitInit *VB) { return 0; }
199 virtual Init *convertValue( DefInit *DI) { return 0; }
200 virtual Init *convertValue( DagInit *DI) { return 0; }
201 virtual Init *convertValue( TypedInit *TI);
202 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
203 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
206 void print(std::ostream &OS) const { OS << "int"; }
208 bool typeIsConvertibleTo(const RecTy *RHS) const {
209 return RHS->baseClassOf(this);
212 virtual bool baseClassOf(const BitRecTy *RHS) const { return true; }
213 virtual bool baseClassOf(const BitsRecTy *RHS) const { return true; }
214 virtual bool baseClassOf(const IntRecTy *RHS) const { return true; }
215 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
216 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
217 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
218 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
219 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
223 /// StringRecTy - 'string' - Represent an string value
225 class StringRecTy : public RecTy {
227 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
228 virtual Init *convertValue( BitInit *BI) { return 0; }
229 virtual Init *convertValue( BitsInit *BI) { return 0; }
230 virtual Init *convertValue( IntInit *II) { return 0; }
231 virtual Init *convertValue(StringInit *SI) { return (Init*)SI; }
232 virtual Init *convertValue( ListInit *LI) { return 0; }
233 virtual Init *convertValue( CodeInit *CI) { return 0; }
234 virtual Init *convertValue(VarBitInit *VB) { return 0; }
235 virtual Init *convertValue( DefInit *DI) { return 0; }
236 virtual Init *convertValue( DagInit *DI) { return 0; }
237 virtual Init *convertValue( TypedInit *TI);
238 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
239 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
241 void print(std::ostream &OS) const { OS << "string"; }
243 bool typeIsConvertibleTo(const RecTy *RHS) const {
244 return RHS->baseClassOf(this);
247 virtual bool baseClassOf(const BitRecTy *RHS) const { return false; }
248 virtual bool baseClassOf(const BitsRecTy *RHS) const { return false; }
249 virtual bool baseClassOf(const IntRecTy *RHS) const { return false; }
250 virtual bool baseClassOf(const StringRecTy *RHS) const { return true; }
251 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
252 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
253 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
254 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
257 // ListRecTy - 'list<Ty>' - Represent a list of values, all of which must be of
258 // the specified type.
259 /// ListRecTy - 'list<Ty>' - Represent a list of values, all of which must
260 /// be of the specified type.
262 class ListRecTy : public RecTy {
265 ListRecTy(RecTy *T) : Ty(T) {}
267 RecTy *getElementType() const { return Ty; }
269 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
270 virtual Init *convertValue( BitInit *BI) { return 0; }
271 virtual Init *convertValue( BitsInit *BI) { return 0; }
272 virtual Init *convertValue( IntInit *II) { return 0; }
273 virtual Init *convertValue(StringInit *SI) { return 0; }
274 virtual Init *convertValue( ListInit *LI);
275 virtual Init *convertValue( CodeInit *CI) { return 0; }
276 virtual Init *convertValue(VarBitInit *VB) { return 0; }
277 virtual Init *convertValue( DefInit *DI) { return 0; }
278 virtual Init *convertValue( DagInit *DI) { return 0; }
279 virtual Init *convertValue( TypedInit *TI);
280 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
281 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
283 void print(std::ostream &OS) const;
285 bool typeIsConvertibleTo(const RecTy *RHS) const {
286 return RHS->baseClassOf(this);
289 virtual bool baseClassOf(const BitRecTy *RHS) const { return false; }
290 virtual bool baseClassOf(const BitsRecTy *RHS) const { return false; }
291 virtual bool baseClassOf(const IntRecTy *RHS) const { return false; }
292 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
293 virtual bool baseClassOf(const ListRecTy *RHS) const {
294 return RHS->getElementType()->typeIsConvertibleTo(Ty);
296 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
297 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
298 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
301 /// CodeRecTy - 'code' - Represent an code fragment, function or method.
303 class CodeRecTy : public RecTy {
305 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
306 virtual Init *convertValue( BitInit *BI) { return 0; }
307 virtual Init *convertValue( BitsInit *BI) { return 0; }
308 virtual Init *convertValue( IntInit *II) { return 0; }
309 virtual Init *convertValue(StringInit *SI) { return 0; }
310 virtual Init *convertValue( ListInit *LI) { return 0; }
311 virtual Init *convertValue( CodeInit *CI) { return (Init*)CI; }
312 virtual Init *convertValue(VarBitInit *VB) { return 0; }
313 virtual Init *convertValue( DefInit *DI) { return 0; }
314 virtual Init *convertValue( DagInit *DI) { return 0; }
315 virtual Init *convertValue( TypedInit *TI);
316 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
317 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
320 void print(std::ostream &OS) const { OS << "code"; }
322 bool typeIsConvertibleTo(const RecTy *RHS) const {
323 return RHS->baseClassOf(this);
325 virtual bool baseClassOf(const BitRecTy *RHS) const { return false; }
326 virtual bool baseClassOf(const BitsRecTy *RHS) const { return false; }
327 virtual bool baseClassOf(const IntRecTy *RHS) const { return false; }
328 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
329 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
330 virtual bool baseClassOf(const CodeRecTy *RHS) const { return true; }
331 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
332 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
335 /// DagRecTy - 'dag' - Represent a dag fragment
337 class DagRecTy : public RecTy {
339 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
340 virtual Init *convertValue( BitInit *BI) { return 0; }
341 virtual Init *convertValue( BitsInit *BI) { return 0; }
342 virtual Init *convertValue( IntInit *II) { return 0; }
343 virtual Init *convertValue(StringInit *SI) { return 0; }
344 virtual Init *convertValue( ListInit *LI) { return 0; }
345 virtual Init *convertValue( CodeInit *CI) { return 0; }
346 virtual Init *convertValue(VarBitInit *VB) { return 0; }
347 virtual Init *convertValue( DefInit *DI) { return 0; }
348 virtual Init *convertValue( DagInit *CI) { return (Init*)CI; }
349 virtual Init *convertValue( TypedInit *TI);
350 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
351 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
353 void print(std::ostream &OS) const { OS << "dag"; }
355 bool typeIsConvertibleTo(const RecTy *RHS) const {
356 return RHS->baseClassOf(this);
359 virtual bool baseClassOf(const BitRecTy *RHS) const { return false; }
360 virtual bool baseClassOf(const BitsRecTy *RHS) const { return false; }
361 virtual bool baseClassOf(const IntRecTy *RHS) const { return false; }
362 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
363 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
364 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
365 virtual bool baseClassOf(const DagRecTy *RHS) const { return true; }
366 virtual bool baseClassOf(const RecordRecTy *RHS) const { return false; }
370 /// RecordRecTy - '[classname]' - Represent an instance of a class, such as:
373 class RecordRecTy : public RecTy {
376 RecordRecTy(Record *R) : Rec(R) {}
378 Record *getRecord() const { return Rec; }
380 virtual Init *convertValue( UnsetInit *UI) { return (Init*)UI; }
381 virtual Init *convertValue( BitInit *BI) { return 0; }
382 virtual Init *convertValue( BitsInit *BI) { return 0; }
383 virtual Init *convertValue( IntInit *II) { return 0; }
384 virtual Init *convertValue(StringInit *SI) { return 0; }
385 virtual Init *convertValue( ListInit *LI) { return 0; }
386 virtual Init *convertValue( CodeInit *CI) { return 0; }
387 virtual Init *convertValue(VarBitInit *VB) { return 0; }
388 virtual Init *convertValue( DefInit *DI);
389 virtual Init *convertValue( DagInit *DI) { return 0; }
390 virtual Init *convertValue( TypedInit *VI);
391 virtual Init *convertValue( VarInit *VI) { return RecTy::convertValue(VI);}
392 virtual Init *convertValue( FieldInit *FI) { return RecTy::convertValue(FI);}
394 void print(std::ostream &OS) const;
396 bool typeIsConvertibleTo(const RecTy *RHS) const {
397 return RHS->baseClassOf(this);
399 virtual bool baseClassOf(const BitRecTy *RHS) const { return false; }
400 virtual bool baseClassOf(const BitsRecTy *RHS) const { return false; }
401 virtual bool baseClassOf(const IntRecTy *RHS) const { return false; }
402 virtual bool baseClassOf(const StringRecTy *RHS) const { return false; }
403 virtual bool baseClassOf(const ListRecTy *RHS) const { return false; }
404 virtual bool baseClassOf(const CodeRecTy *RHS) const { return false; }
405 virtual bool baseClassOf(const DagRecTy *RHS) const { return false; }
406 virtual bool baseClassOf(const RecordRecTy *RHS) const;
411 //===----------------------------------------------------------------------===//
412 // Initializer Classes
413 //===----------------------------------------------------------------------===//
418 /// isComplete - This virtual method should be overridden by values that may
419 /// not be completely specified yet.
420 virtual bool isComplete() const { return true; }
422 /// print - Print out this value.
423 virtual void print(std::ostream &OS) const = 0;
425 /// dump - Debugging method that may be called through a debugger, just
426 /// invokes print on cerr.
429 /// convertInitializerTo - This virtual function is a simple call-back
430 /// function that should be overridden to call the appropriate
431 /// RecTy::convertValue method.
433 virtual Init *convertInitializerTo(RecTy *Ty) = 0;
435 /// convertInitializerBitRange - This method is used to implement the bitrange
436 /// selection operator. Given an initializer, it selects the specified bits
437 /// out, returning them as a new init of bits type. If it is not legal to use
438 /// the bit subscript operator on this initializer, return null.
440 virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits) {
444 /// convertInitListSlice - This method is used to implement the list slice
445 /// selection operator. Given an initializer, it selects the specified list
446 /// elements, returning them as a new init of list type. If it is not legal
447 /// to take a slice of this, return null.
449 virtual Init *convertInitListSlice(const std::vector<unsigned> &Elements) {
453 /// getFieldType - This method is used to implement the FieldInit class.
454 /// Implementors of this method should return the type of the named field if
455 /// they are of record type.
457 virtual RecTy *getFieldType(const std::string &FieldName) const { return 0; }
459 /// getFieldInit - This method complements getFieldType to return the
460 /// initializer for the specified field. If getFieldType returns non-null
461 /// this method should return non-null, otherwise it returns null.
463 virtual Init *getFieldInit(Record &R, const std::string &FieldName) const {
467 enum BinaryOp { SHL, SRA, SRL };
468 virtual Init *getBinaryOp(BinaryOp Op, Init *RHS) {
472 /// resolveReferences - This method is used by classes that refer to other
473 /// variables which may not be defined at the time they expression is formed.
474 /// If a value is set for the variable later, this method will be called on
475 /// users of the value to allow the value to propagate out.
477 virtual Init *resolveReferences(Record &R) { return this; }
480 inline std::ostream &operator<<(std::ostream &OS, const Init &I) {
481 I.print(OS); return OS;
485 /// UnsetInit - ? - Represents an uninitialized value
487 class UnsetInit : public Init {
489 virtual Init *convertInitializerTo(RecTy *Ty) {
490 return Ty->convertValue(this);
493 virtual bool isComplete() const { return false; }
494 virtual void print(std::ostream &OS) const { OS << "?"; }
498 /// BitInit - true/false - Represent a concrete initializer for a bit.
500 class BitInit : public Init {
503 BitInit(bool V) : Value(V) {}
505 bool getValue() const { return Value; }
507 virtual Init *convertInitializerTo(RecTy *Ty) {
508 return Ty->convertValue(this);
511 virtual void print(std::ostream &OS) const { OS << (Value ? "1" : "0"); }
514 /// BitsInit - { a, b, c } - Represents an initializer for a BitsRecTy value.
515 /// It contains a vector of bits, whose size is determined by the type.
517 class BitsInit : public Init {
518 std::vector<Init*> Bits;
520 BitsInit(unsigned Size) : Bits(Size) {}
522 unsigned getNumBits() const { return Bits.size(); }
524 Init *getBit(unsigned Bit) const {
525 assert(Bit < Bits.size() && "Bit index out of range!");
528 void setBit(unsigned Bit, Init *V) {
529 assert(Bit < Bits.size() && "Bit index out of range!");
530 assert(Bits[Bit] == 0 && "Bit already set!");
534 virtual Init *convertInitializerTo(RecTy *Ty) {
535 return Ty->convertValue(this);
537 virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
539 virtual bool isComplete() const {
540 for (unsigned i = 0; i != getNumBits(); ++i)
541 if (!getBit(i)->isComplete()) return false;
544 virtual void print(std::ostream &OS) const;
546 virtual Init *resolveReferences(Record &R);
548 // printXX - Print this bitstream with the specified format, returning true if
549 // it is not possible.
550 bool printInHex(std::ostream &OS) const;
551 bool printAsVariable(std::ostream &OS) const;
552 bool printAsUnset(std::ostream &OS) const;
556 /// IntInit - 7 - Represent an initalization by a literal integer value.
558 class IntInit : public Init {
561 IntInit(int V) : Value(V) {}
563 int getValue() const { return Value; }
565 virtual Init *convertInitializerTo(RecTy *Ty) {
566 return Ty->convertValue(this);
568 virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
570 virtual Init *getBinaryOp(BinaryOp Op, Init *RHS);
572 virtual void print(std::ostream &OS) const { OS << Value; }
576 /// StringInit - "foo" - Represent an initialization by a string value.
578 class StringInit : public Init {
581 StringInit(const std::string &V) : Value(V) {}
583 const std::string &getValue() const { return Value; }
585 virtual Init *convertInitializerTo(RecTy *Ty) {
586 return Ty->convertValue(this);
589 virtual void print(std::ostream &OS) const { OS << "\"" << Value << "\""; }
592 /// CodeInit - "[{...}]" - Represent a code fragment.
594 class CodeInit : public Init {
597 CodeInit(const std::string &V) : Value(V) {}
599 const std::string getValue() const { return Value; }
601 virtual Init *convertInitializerTo(RecTy *Ty) {
602 return Ty->convertValue(this);
605 virtual void print(std::ostream &OS) const { OS << "[{" << Value << "}]"; }
608 /// ListInit - [AL, AH, CL] - Represent a list of defs
610 class ListInit : public Init {
611 std::vector<Init*> Values;
613 ListInit(std::vector<Init*> &Vs) {
617 unsigned getSize() const { return Values.size(); }
618 Init *getElement(unsigned i) const {
619 assert(i < Values.size() && "List element index out of range!");
623 Init *convertInitListSlice(const std::vector<unsigned> &Elements);
625 virtual Init *convertInitializerTo(RecTy *Ty) {
626 return Ty->convertValue(this);
629 /// resolveReferences - This method is used by classes that refer to other
630 /// variables which may not be defined at the time they expression is formed.
631 /// If a value is set for the variable later, this method will be called on
632 /// users of the value to allow the value to propagate out.
634 virtual Init *resolveReferences(Record &R);
636 virtual void print(std::ostream &OS) const;
640 /// TypedInit - This is the common super-class of types that have a specific,
643 class TypedInit : public Init {
646 TypedInit(RecTy *T) : Ty(T) {}
648 RecTy *getType() const { return Ty; }
650 virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
651 virtual Init *convertInitListSlice(const std::vector<unsigned> &Elements);
653 /// resolveBitReference - This method is used to implement
654 /// VarBitInit::resolveReferences. If the bit is able to be resolved, we
655 /// simply return the resolved value, otherwise we return null.
657 virtual Init *resolveBitReference(Record &R, unsigned Bit) = 0;
659 /// resolveListElementReference - This method is used to implement
660 /// VarListElementInit::resolveReferences. If the list element is resolvable
661 /// now, we return the resolved value, otherwise we return null.
662 virtual Init *resolveListElementReference(Record &R, unsigned Elt) = 0;
665 /// VarInit - 'Opcode' - Represent a reference to an entire variable object.
667 class VarInit : public TypedInit {
670 VarInit(const std::string &VN, RecTy *T) : TypedInit(T), VarName(VN) {}
672 virtual Init *convertInitializerTo(RecTy *Ty) {
673 return Ty->convertValue(this);
676 const std::string &getName() const { return VarName; }
678 virtual Init *resolveBitReference(Record &R, unsigned Bit);
679 virtual Init *resolveListElementReference(Record &R, unsigned Elt);
681 virtual RecTy *getFieldType(const std::string &FieldName) const;
682 virtual Init *getFieldInit(Record &R, const std::string &FieldName) const;
684 /// resolveReferences - This method is used by classes that refer to other
685 /// variables which may not be defined at the time they expression is formed.
686 /// If a value is set for the variable later, this method will be called on
687 /// users of the value to allow the value to propagate out.
689 virtual Init *resolveReferences(Record &R);
691 virtual void print(std::ostream &OS) const { OS << VarName; }
695 /// VarBitInit - Opcode{0} - Represent access to one bit of a variable or field.
697 class VarBitInit : public Init {
701 VarBitInit(TypedInit *T, unsigned B) : TI(T), Bit(B) {
702 assert(T->getType() && dynamic_cast<BitsRecTy*>(T->getType()) &&
703 ((BitsRecTy*)T->getType())->getNumBits() > B &&
704 "Illegal VarBitInit expression!");
707 virtual Init *convertInitializerTo(RecTy *Ty) {
708 return Ty->convertValue(this);
711 TypedInit *getVariable() const { return TI; }
712 unsigned getBitNum() const { return Bit; }
714 virtual void print(std::ostream &OS) const {
715 TI->print(OS); OS << "{" << Bit << "}";
717 virtual Init *resolveReferences(Record &R);
720 /// VarListElementInit - List[4] - Represent access to one element of a var or
722 class VarListElementInit : public TypedInit {
726 VarListElementInit(TypedInit *T, unsigned E)
727 : TypedInit(dynamic_cast<ListRecTy*>(T->getType())->getElementType()),
729 assert(T->getType() && dynamic_cast<ListRecTy*>(T->getType()) &&
730 "Illegal VarBitInit expression!");
733 virtual Init *convertInitializerTo(RecTy *Ty) {
734 return Ty->convertValue(this);
737 TypedInit *getVariable() const { return TI; }
738 unsigned getElementNum() const { return Element; }
740 virtual Init *resolveBitReference(Record &R, unsigned Bit);
742 /// resolveListElementReference - This method is used to implement
743 /// VarListElementInit::resolveReferences. If the list element is resolvable
744 /// now, we return the resolved value, otherwise we return null.
745 virtual Init *resolveListElementReference(Record &R, unsigned Elt);
747 virtual void print(std::ostream &OS) const {
748 TI->print(OS); OS << "[" << Element << "]";
750 virtual Init *resolveReferences(Record &R);
753 /// DefInit - AL - Represent a reference to a 'def' in the description
755 class DefInit : public Init {
758 DefInit(Record *D) : Def(D) {}
760 virtual Init *convertInitializerTo(RecTy *Ty) {
761 return Ty->convertValue(this);
764 Record *getDef() const { return Def; }
766 //virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
768 virtual RecTy *getFieldType(const std::string &FieldName) const;
769 virtual Init *getFieldInit(Record &R, const std::string &FieldName) const;
771 virtual void print(std::ostream &OS) const;
775 /// FieldInit - X.Y - Represent a reference to a subfield of a variable
777 class FieldInit : public TypedInit {
778 Init *Rec; // Record we are referring to
779 std::string FieldName; // Field we are accessing
781 FieldInit(Init *R, const std::string &FN)
782 : TypedInit(R->getFieldType(FN)), Rec(R), FieldName(FN) {
783 assert(getType() && "FieldInit with non-record type!");
786 virtual Init *convertInitializerTo(RecTy *Ty) {
787 return Ty->convertValue(this);
790 virtual Init *resolveBitReference(Record &R, unsigned Bit);
791 virtual Init *resolveListElementReference(Record &R, unsigned Elt);
793 virtual Init *resolveReferences(Record &R);
795 virtual void print(std::ostream &OS) const {
796 Rec->print(OS); OS << "." << FieldName;
800 /// DagInit - (def a, b) - Represent a DAG tree value. DAG inits are required
801 /// to have Records for their first value, after that, any legal Init is
804 class DagInit : public Init {
806 std::vector<Init*> Args;
807 std::vector<std::string> ArgNames;
809 DagInit(Record *D, const std::vector<std::pair<Init*, std::string> > &args)
811 Args.reserve(args.size());
812 ArgNames.reserve(args.size());
813 for (unsigned i = 0, e = args.size(); i != e; ++i) {
814 Args.push_back(args[i].first);
815 ArgNames.push_back(args[i].second);
819 virtual Init *convertInitializerTo(RecTy *Ty) {
820 return Ty->convertValue(this);
823 Record *getNodeType() const { return NodeTypeDef; }
825 unsigned getNumArgs() const { return Args.size(); }
826 Init *getArg(unsigned Num) const {
827 assert(Num < Args.size() && "Arg number out of range!");
830 const std::string &getArgName(unsigned Num) const {
831 assert(Num < ArgNames.size() && "Arg number out of range!");
832 return ArgNames[Num];
835 void setArg(unsigned Num, Init *I) {
836 assert(Num < Args.size() && "Arg number out of range!");
840 virtual void print(std::ostream &OS) const;
843 //===----------------------------------------------------------------------===//
844 // High-Level Classes
845 //===----------------------------------------------------------------------===//
853 RecordVal(const std::string &N, RecTy *T, unsigned P);
855 const std::string &getName() const { return Name; }
857 unsigned getPrefix() const { return Prefix; }
858 RecTy *getType() const { return Ty; }
859 Init *getValue() const { return Value; }
861 bool setValue(Init *V) {
863 Value = V->convertInitializerTo(Ty);
871 void print(std::ostream &OS, bool PrintSem = true) const;
874 inline std::ostream &operator<<(std::ostream &OS, const RecordVal &RV) {
880 const std::string Name;
881 std::vector<std::string> TemplateArgs;
882 std::vector<RecordVal> Values;
883 std::vector<Record*> SuperClasses;
886 Record(const std::string &N) : Name(N) {}
889 const std::string &getName() const { return Name; }
890 const std::vector<std::string> &getTemplateArgs() const {
893 const std::vector<RecordVal> &getValues() const { return Values; }
894 const std::vector<Record*> &getSuperClasses() const { return SuperClasses; }
896 bool isTemplateArg(const std::string &Name) const {
897 for (unsigned i = 0, e = TemplateArgs.size(); i != e; ++i)
898 if (TemplateArgs[i] == Name) return true;
902 const RecordVal *getValue(const std::string &Name) const {
903 for (unsigned i = 0, e = Values.size(); i != e; ++i)
904 if (Values[i].getName() == Name) return &Values[i];
907 RecordVal *getValue(const std::string &Name) {
908 for (unsigned i = 0, e = Values.size(); i != e; ++i)
909 if (Values[i].getName() == Name) return &Values[i];
913 void addTemplateArg(const std::string &Name) {
914 assert(!isTemplateArg(Name) && "Template arg already defined!");
915 TemplateArgs.push_back(Name);
918 void addValue(const RecordVal &RV) {
919 assert(getValue(RV.getName()) == 0 && "Value already added!");
920 Values.push_back(RV);
923 void removeValue(const std::string &Name) {
924 assert(getValue(Name) && "Cannot remove an entry that does not exist!");
925 for (unsigned i = 0, e = Values.size(); i != e; ++i)
926 if (Values[i].getName() == Name) {
927 Values.erase(Values.begin()+i);
930 assert(0 && "Name does not exist in record!");
933 bool isSubClassOf(Record *R) const {
934 for (unsigned i = 0, e = SuperClasses.size(); i != e; ++i)
935 if (SuperClasses[i] == R)
940 bool isSubClassOf(const std::string &Name) const {
941 for (unsigned i = 0, e = SuperClasses.size(); i != e; ++i)
942 if (SuperClasses[i]->getName() == Name)
947 void addSuperClass(Record *R) {
948 assert(!isSubClassOf(R) && "Already subclassing record!");
949 SuperClasses.push_back(R);
952 // resolveReferences - If there are any field references that refer to fields
953 // that have been filled in, we can propagate the values now.
955 void resolveReferences();
959 //===--------------------------------------------------------------------===//
960 // High-level methods useful to tablegen back-ends
963 /// getValueInit - Return the initializer for a value with the specified name,
964 /// or throw an exception if the field does not exist.
966 Init *getValueInit(const std::string &FieldName) const;
968 /// getValueAsString - This method looks up the specified field and returns
969 /// its value as a string, throwing an exception if the field does not exist
970 /// or if the value is not a string.
972 std::string getValueAsString(const std::string &FieldName) const;
974 /// getValueAsBitsInit - This method looks up the specified field and returns
975 /// its value as a BitsInit, throwing an exception if the field does not exist
976 /// or if the value is not the right type.
978 BitsInit *getValueAsBitsInit(const std::string &FieldName) const;
980 /// getValueAsListInit - This method looks up the specified field and returns
981 /// its value as a ListInit, throwing an exception if the field does not exist
982 /// or if the value is not the right type.
984 ListInit *getValueAsListInit(const std::string &FieldName) const;
986 /// getValueAsDef - This method looks up the specified field and returns its
987 /// value as a Record, throwing an exception if the field does not exist or if
988 /// the value is not the right type.
990 Record *getValueAsDef(const std::string &FieldName) const;
992 /// getValueAsBit - This method looks up the specified field and returns its
993 /// value as a bit, throwing an exception if the field does not exist or if
994 /// the value is not the right type.
996 bool getValueAsBit(const std::string &FieldName) const;
998 /// getValueAsInt - This method looks up the specified field and returns its
999 /// value as an int, throwing an exception if the field does not exist or if
1000 /// the value is not the right type.
1002 int getValueAsInt(const std::string &FieldName) const;
1004 /// getValueAsDag - This method looks up the specified field and returns its
1005 /// value as an Dag, throwing an exception if the field does not exist or if
1006 /// the value is not the right type.
1008 DagInit *getValueAsDag(const std::string &FieldName) const;
1011 std::ostream &operator<<(std::ostream &OS, const Record &R);
1013 class RecordKeeper {
1014 std::map<std::string, Record*> Classes, Defs;
1017 for (std::map<std::string, Record*>::iterator I = Classes.begin(),
1018 E = Classes.end(); I != E; ++I)
1020 for (std::map<std::string, Record*>::iterator I = Defs.begin(),
1021 E = Defs.end(); I != E; ++I)
1025 const std::map<std::string, Record*> &getClasses() const { return Classes; }
1026 const std::map<std::string, Record*> &getDefs() const { return Defs; }
1028 Record *getClass(const std::string &Name) const {
1029 std::map<std::string, Record*>::const_iterator I = Classes.find(Name);
1030 return I == Classes.end() ? 0 : I->second;
1032 Record *getDef(const std::string &Name) const {
1033 std::map<std::string, Record*>::const_iterator I = Defs.find(Name);
1034 return I == Defs.end() ? 0 : I->second;
1036 void addClass(Record *R) {
1037 assert(getClass(R->getName()) == 0 && "Class already exists!");
1038 Classes.insert(std::make_pair(R->getName(), R));
1040 void addDef(Record *R) {
1041 assert(getDef(R->getName()) == 0 && "Def already exists!");
1042 Defs.insert(std::make_pair(R->getName(), R));
1045 //===--------------------------------------------------------------------===//
1046 // High-level helper methods, useful for tablegen backends...
1048 /// getAllDerivedDefinitions - This method returns all concrete definitions
1049 /// that derive from the specified class name. If a class with the specified
1050 /// name does not exist, an exception is thrown.
1051 std::vector<Record*>
1052 getAllDerivedDefinitions(const std::string &ClassName) const;
1058 std::ostream &operator<<(std::ostream &OS, const RecordKeeper &RK);
1060 extern RecordKeeper Records;
1062 } // End llvm namespace