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ir: Add a debug_comp_stack debugging function

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When debugging type comparison, it can useful to see what the
comparison stack is.  This patch adds the a debug_comp_stack to dump
the comparison stack as a string.

	* include/abg-fwd.h (debug_comp_stack): Declare function.
	* src/abg-ir.cc (debug_comp_vec, print_comp_stack): Define static
	functions.
	(debug_comp_stack): Define new function.

Signed-off-by: Dodji Seketeli <dodji@seketeli.org>
This commit is contained in:
Dodji Seketeli 2022-12-16 17:43:34 +01:00
parent c2cab36429
commit fd821dd4db
2 changed files with 49 additions and 0 deletions
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3
include/abg-fwd.h
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@ -1056,6 +1056,9 @@ debug(const decl_base* artifact);
bool
debug_equals(const type_or_decl_base *l, const type_or_decl_base *r);
void
debug_comp_stack(const environment& env);
bool
odr_is_relevant(const type_or_decl_base&);

46
src/abg-ir.cc
View File

@ -9533,6 +9533,52 @@ debug_equals(const type_or_decl_base *l, const type_or_decl_base *r)
return (*l == *r);
}
/// Emit a trace of a comparison operand stack.
///
/// @param vect the operand stack to emit the trace for.
///
/// @param o the output stream to emit the trace to.
static void
debug_comp_vec(const vector<const type_base*>& vect, std::ostringstream& o)
{
for (auto t : vect)
{
o << "|" << t->get_pretty_representation()
<< "@" << std::hex << t << std::dec;
}
if (!vect.empty())
o << "|";
}
/// Construct a trace of the two comparison operand stacks.
///
/// @param the environment in which the comparison operand stacks are.
///
/// @return a string representing the trace.
static string
print_comp_stack(const environment& env)
{
std::ostringstream o;
o << "left-operands: ";
debug_comp_vec(env.priv_->left_type_comp_operands_, o);
o << "\n" << "right-operands: ";
debug_comp_vec(env.priv_->right_type_comp_operands_, o);
o << "\n";
return o.str();
}
/// Emit a trace of the two comparison operands stack on the standard
/// error stream.
///
/// @param env the environment the comparison operands stack belong
/// to.
void
debug_comp_stack(const environment& env)
{
std::cerr << print_comp_stack(env);
std::cerr << std::endl;
}
/// By looking at the language of the TU a given ABI artifact belongs
/// to, test if the ONE Definition Rule should apply.
///