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Use the shiny new iterator adaptor tool to implement the

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value_op_iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207078 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2014-04-24 05:33:53 +00:00
parent 18cd5b1585
commit f627b1e554
1 changed files with 6 additions and 53 deletions
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59
include/llvm/IR/User.h
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@ -19,6 +19,7 @@
#ifndef LLVM_IR_USER_H #ifndef LLVM_IR_USER_H
#define LLVM_IR_USER_H #define LLVM_IR_USER_H
#include "llvm/ADT/iterator.h"
#include "llvm/ADT/iterator_range.h" #include "llvm/ADT/iterator_range.h"
#include "llvm/IR/Value.h" #include "llvm/IR/Value.h"
#include "llvm/Support/ErrorHandling.h" #include "llvm/Support/ErrorHandling.h"
@ -129,61 +130,13 @@ public:
/// Convenience iterator for directly iterating over the Values in the /// Convenience iterator for directly iterating over the Values in the
/// OperandList /// OperandList
class value_op_iterator struct value_op_iterator
: public std::iterator<std::random_access_iterator_tag, Value *, : iterator_adaptor_base<value_op_iterator, op_iterator, Value *, Value *,
ptrdiff_t, Value *, Value *> { Value *> {
op_iterator OI; explicit value_op_iterator(Use *U = nullptr) : iterator_adaptor_base(U) {}
public:
explicit value_op_iterator(Use *U = nullptr) : OI(U) {}
bool operator==(const value_op_iterator &x) const { Value *operator*() const { return *I; }
return OI == x.OI;
}
bool operator!=(const value_op_iterator &x) const {
return !operator==(x);
}
value_op_iterator &operator+=(ptrdiff_t n) {
OI += n;
return *this;
}
value_op_iterator &operator-=(ptrdiff_t n) {
OI -= n;
return *this;
}
value_op_iterator operator+(ptrdiff_t n) const {
return value_op_iterator(OI + n);
}
friend value_op_iterator operator+(ptrdiff_t n,
const value_op_iterator &i) {
return i + n;
}
value_op_iterator operator-(ptrdiff_t n) const {
return value_op_iterator(OI - n);
}
ptrdiff_t operator-(const value_op_iterator &RHS) const {
return OI - RHS.OI;
}
bool operator<(const value_op_iterator &RHS) const { return OI < RHS.OI; }
bool operator>(const value_op_iterator &RHS) const { return OI > RHS.OI; }
bool operator<=(const value_op_iterator &RHS) const { return OI <= RHS.OI; }
bool operator>=(const value_op_iterator &RHS) const { return OI >= RHS.OI; }
value_op_iterator &operator++() { return *this += 1; }
value_op_iterator &operator--() { return *this -= 1; }
value_op_iterator operator++(int) {
value_op_iterator tmp = *this;
++*this;
return tmp;
}
value_op_iterator operator--(int) {
value_op_iterator tmp = *this;
--*this;
return tmp;
}
Value *operator*() const { return *OI; }
Value *operator->() const { return operator*(); } Value *operator->() const { return operator*(); }
Value *operator[](ptrdiff_t n) const { return *(*this + n); }
}; };
inline value_op_iterator value_op_begin() { inline value_op_iterator value_op_begin() {