//===- llvm/Support/InstIterator.h - Classes for inst iteration -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file contains definitions of two iterators for iterating over the
// instructions in a function. This is effectively a wrapper around a two level
#include "llvm/BasicBlock.h"
#include "llvm/Function.h"
+namespace llvm {
+
// This class implements inst_begin() & inst_end() for
// inst_iterator and const_inst_iterator's.
//
typedef _BB_i_t BBIty;
typedef _BI_t BIty;
typedef _II_t IIty;
- _BB_t &BBs; // BasicBlocksType
+ _BB_t *BBs; // BasicBlocksType
_BB_i_t BB; // BasicBlocksType::iterator
_BI_t BI; // BasicBlock::iterator
public:
typedef std::bidirectional_iterator_tag iterator_category;
typedef IIty value_type;
- typedef unsigned difference_type;
- typedef BIty pointer;
- typedef IIty reference;
+ typedef signed difference_type;
+ typedef IIty* pointer;
+ typedef IIty& reference;
+
+ // Default constructor
+ InstIterator() {}
// Copy constructor...
template<typename A, typename B, typename C, typename D>
: BBs(II.BBs), BB(II.BB), BI(II.BI) {}
template<class M> InstIterator(M &m)
- : BBs(m.getBasicBlockList()), BB(BBs.begin()) { // begin ctor
- if (BB != BBs.end()) {
+ : BBs(&m.getBasicBlockList()), BB(BBs->begin()) { // begin ctor
+ if (BB != BBs->end()) {
BI = BB->begin();
advanceToNextBB();
}
}
template<class M> InstIterator(M &m, bool)
- : BBs(m.getBasicBlockList()), BB(BBs.end()) { // end ctor
+ : BBs(&m.getBasicBlockList()), BB(BBs->end()) { // end ctor
}
// Accessors to get at the underlying iterators...
inline BBIty &getBasicBlockIterator() { return BB; }
inline BIty &getInstructionIterator() { return BI; }
- inline IIty operator*() const { return BI; }
- inline IIty operator->() const { return operator*(); }
+ inline reference operator*() const { return *BI; }
+ inline pointer operator->() const { return &operator*(); }
inline bool operator==(const InstIterator &y) const {
- return BB == y.BB && (BB == BBs.end() || BI == y.BI);
+ return BB == y.BB && (BB == BBs->end() || BI == y.BI);
}
inline bool operator!=(const InstIterator& y) const {
return !operator==(y);
}
InstIterator& operator--() {
- while (BB == BBs.end() || BI == BB->begin()) {
+ while (BB == BBs->end() || BI == BB->begin()) {
--BB;
BI = BB->end();
}
InstIterator tmp = *this; --*this; return tmp;
}
- inline bool atEnd() const { return BB == BBs.end(); }
+ inline bool atEnd() const { return BB == BBs->end(); }
private:
inline void advanceToNextBB() {
// the end() of the current BasicBlock and there are successor BBs.
while (BI == BB->end()) {
++BB;
- if (BB == BBs.end()) break;
+ if (BB == BBs->end()) break;
BI = BB->begin();
}
}
typedef InstIterator<iplist<BasicBlock>,
Function::iterator, BasicBlock::iterator,
- Instruction*> inst_iterator;
+ Instruction> inst_iterator;
typedef InstIterator<const iplist<BasicBlock>,
Function::const_iterator,
BasicBlock::const_iterator,
- const Instruction*> const_inst_iterator;
+ const Instruction> const_inst_iterator;
inline inst_iterator inst_begin(Function *F) { return inst_iterator(*F); }
inline inst_iterator inst_end(Function *F) { return inst_iterator(*F, true); }
return const_inst_iterator(F, true);
}
+} // End llvm namespace
+
#endif