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DIBuilder: Extract header_begin() and header_end(), NFC

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Use begin/end functions so that users don't need to know how these weird
things work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226774 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-01-22 03:17:43 +00:00
parent cc19b2fb2e
commit db5a7969ce
1 changed files with 6 additions and 4 deletions
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10
include/llvm/IR/DebugInfo.h
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@ -200,13 +200,16 @@ public:
DIHeaderFieldIterator());
}
DIHeaderFieldIterator header_begin() const { return getHeader(); }
DIHeaderFieldIterator header_end() const { return StringRef(); }
DIHeaderFieldIterator getHeaderIterator(unsigned Index) const {
// Since callers expect an empty string for out-of-range accesses, we can't
// use std::advance() here.
for (DIHeaderFieldIterator I(getHeader()), E; I != E; ++I, --Index)
for (auto I = header_begin(), E = header_end(); I != E; ++I, --Index)
if (!Index)
return I;
return StringRef();
return header_end();
}
StringRef getHeaderField(unsigned Index) const {
@ -888,8 +891,7 @@ class DIExpressionIterator
DIExpressionIterator(DIHeaderFieldIterator I) : I(I) {}
public:
DIExpressionIterator() {}
DIExpressionIterator(const DIExpression Expr)
: I(Expr.getHeader()) { ++I; }
DIExpressionIterator(const DIExpression &Expr) : I(++Expr.header_begin()) {}
uint64_t operator*() const { return I.getNumber<uint64_t>(); }
DIExpressionIterator &operator++() {
increment();