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DIBuilder: Extract DIHeaderFieldIterator::getNumber(), NFC

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Reduce code duplication between `DIBuilder` and `DIExpressionIterator`
by implementing a `getNumber()` directly in the iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226772 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-01-22 03:11:13 +00:00
parent b5f4854fb4
commit eaa29e9019
1 changed files with 12 additions and 10 deletions
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22
include/llvm/IR/DebugInfo.h
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@ -99,6 +99,16 @@ public:
return Header.slice(Current.end() - Header.begin() + 1, StringRef::npos);
}
/// \brief Get the current field as a number.
///
/// Convert the current field into a number. Return \c 0 on error.
template <class T> T getNumber() const {
T Int;
if (getCurrent().getAsInteger(0, Int))
return 0;
return Int;
}
private:
void increment() {
assert(Current.data() != nullptr && "Cannot increment past the end");
@ -204,10 +214,7 @@ public:
}
template <class T> T getHeaderFieldAs(unsigned Index) const {
T Int;
if (getHeaderField(Index).getAsInteger(0, Int))
return 0;
return Int;
return getHeaderIterator(Index).getNumber<T>();
}
uint16_t getTag() const { return getHeaderFieldAs<uint16_t>(0); }
@ -883,12 +890,7 @@ public:
DIExpressionIterator() {}
DIExpressionIterator(const DIExpression Expr)
: I(Expr.getHeader()) { ++I; }
uint64_t operator*() const {
uint64_t UInt;
if (I->getAsInteger(0, UInt))
return 0;
return UInt;
}
uint64_t operator*() const { return I.getNumber<uint64_t>(); }
DIExpressionIterator &operator++() {
increment();
return *this;