//===- 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 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
#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>
template<typename A, typename B, typename C, typename D>
InstIterator(InstIterator<A,B,C,D> &II)
: 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()) {
+
+ template<class M> InstIterator(M &m)
+ : 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
+ template<class M> InstIterator(M &m, bool)
+ : 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 bool operator==(const InstIterator &y) const {
- return BB == y.BB && (BB == BBs.end() || BI == y.BI);
+
+ 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);
}
- inline bool operator!=(const InstIterator& y) const {
+ inline bool operator!=(const InstIterator& y) const {
return !operator==(y);
}
- InstIterator& operator++() {
+ InstIterator& operator++() {
++BI;
advanceToNextBB();
- return *this;
+ return *this;
}
- inline InstIterator operator++(int) {
- InstIterator tmp = *this; ++*this; return tmp;
+ inline InstIterator operator++(int) {
+ InstIterator tmp = *this; ++*this; return tmp;
}
-
- InstIterator& operator--() {
- while (BB == BBs.end() || BI == BB->begin()) {
+
+ InstIterator& operator--() {
+ while (BB == BBs->end() || BI == BB->begin()) {
--BB;
BI = BB->end();
}
--BI;
- return *this;
+ return *this;
}
- inline InstIterator operator--(int) {
- InstIterator tmp = *this; --*this; return tmp;
+ inline InstIterator operator--(int) {
+ 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,
+ 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