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Add functions peekNextN(unsigned) and assignNewExpr(ArrayRef<uint64_t>) to DIExpressionCursor #71717

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Merged
merged 1 commit into from
May 29, 2024
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Add functions peekNextN(unsigned) and assignNewExpr(ArrayRef<uint64_t>) to DIExpressionCursor #71717

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17 changes: 17 additions & 0 deletions llvm/include/llvm/IR/DebugInfoMetadata.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3199,6 +3199,23 @@ class DIExpressionCursor {
return *Next;
}

std::optional<DIExpression::ExprOperand> peekNextN(unsigned N) const {
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Wants a doxygen comment. And maybe peekNextNth so as not to imply it returns the next N elements?

if (Start == End)
return std::nullopt;
DIExpression::expr_op_iterator Nth = Start;
for (unsigned I = 0; I < N; I++) {
Nth = Nth.getNext();
if (Nth == End)
return std::nullopt;
}
return *Nth;
}

void assignNewExpr(ArrayRef<uint64_t> Expr) {
this->Start = DIExpression::expr_op_iterator(Expr.begin());
this->End = DIExpression::expr_op_iterator(Expr.end());
}

/// Determine whether there are any operations left in this expression.
operator bool() const { return Start != End; }

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