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[OpenMP] base specific_clause_iterator on iterator_adaptor_base. 

Removes some boilerplate code. No functionality change intended.

llvm-svn: 246452
This commit is contained in:
Benjamin Kramer 2015-08-31 16:45:35 +00:00
parent 36440082f8
commit ec5f51ffe4
1 changed files with 12 additions and 25 deletions
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37
clang/include/clang/AST/StmtOpenMP.h
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@ -95,48 +95,35 @@ public:
/// This iterator visits only clauses of type SpecificClause.
template <typename SpecificClause>
class specific_clause_iterator
: public std::iterator<std::forward_iterator_tag, const SpecificClause *,
ptrdiff_t, const SpecificClause *,
const SpecificClause *> {
ArrayRef<OMPClause *>::const_iterator Current;
: public llvm::iterator_adaptor_base<
specific_clause_iterator<SpecificClause>,
ArrayRef<OMPClause *>::const_iterator, std::forward_iterator_tag,
const SpecificClause *, ptrdiff_t, const SpecificClause *,
const SpecificClause *> {
ArrayRef<OMPClause *>::const_iterator End;
void SkipToNextClause() {
while (Current != End && !isa<SpecificClause>(*Current))
++Current;
while (this->I != End && !isa<SpecificClause>(*this->I))
++this->I;
}
public:
explicit specific_clause_iterator(ArrayRef<OMPClause *> Clauses)
: Current(Clauses.begin()), End(Clauses.end()) {
: specific_clause_iterator::iterator_adaptor_base(Clauses.begin()),
End(Clauses.end()) {
SkipToNextClause();
}
const SpecificClause *operator*() const {
return cast<SpecificClause>(*Current);
}
const SpecificClause *operator->() const {
return cast<SpecificClause>(*Current);
return cast<SpecificClause>(*this->I);
}
const SpecificClause *operator->() const { return **this; }
specific_clause_iterator &operator++() {
++Current;
++this->I;
SkipToNextClause();
return *this;
}
specific_clause_iterator operator++(int) {
specific_clause_iterator tmp(*this);
++(*this);
return tmp;
}
bool operator==(const specific_clause_iterator &RHS) const {
assert(End == RHS.End && "Comparing iterators of different directives!");
return Current == RHS.Current;
}
bool operator!=(const specific_clause_iterator &RHS) const {
return !(*this == RHS);
}
};
template <typename SpecificClause>