void symex_slicet::collect_open_variables(
const symex_target_equationt &equation,
symbol_sett &open_variables)
{
symbol_sett lhs;
for(symex_target_equationt::SSA_stepst::const_iterator
it=equation.SSA_steps.begin();
it!=equation.SSA_steps.end();
it++)
{
const symex_target_equationt::SSA_stept &SSA_step=*it;
get_symbols(SSA_step.guard_expr);
switch(SSA_step.type)
{
case goto_trace_stept::ASSERT:
get_symbols(SSA_step.cond_expr);
break;
case goto_trace_stept::ASSUME:
get_symbols(SSA_step.cond_expr);
break;
case goto_trace_stept::LOCATION:
// ignore
break;
case goto_trace_stept::ASSIGNMENT:
get_symbols(SSA_step.rhs);
lhs.insert(SSA_step.lhs.get(ID_identifier));
break;
case goto_trace_stept::OUTPUT:
break;
default:
assert(false);
}
}
open_variables=depends;
// remove the ones that are defined
open_variables.erase(lhs.begin(), lhs.end());
}
void symex_slicet::collect_open_variables(
const symex_target_equationt &equation,
symbol_sett &open_variables)
{
symbol_sett lhs;
for(symex_target_equationt::SSA_stepst::const_iterator
it=equation.SSA_steps.begin();
it!=equation.SSA_steps.end();
it++)
{
const symex_target_equationt::SSA_stept &SSA_step=*it;
get_symbols(SSA_step.guard);
switch(SSA_step.type)
{
case goto_trace_stept::ASSERT:
get_symbols(SSA_step.cond_expr);
break;
case goto_trace_stept::ASSUME:
get_symbols(SSA_step.cond_expr);
break;
case goto_trace_stept::LOCATION:
// ignore
break;
case goto_trace_stept::ASSIGNMENT:
get_symbols(SSA_step.ssa_rhs);
lhs.insert(SSA_step.ssa_lhs.get_identifier());
break;
case goto_trace_stept::OUTPUT:
case goto_trace_stept::INPUT:
case goto_trace_stept::DEAD:
case goto_trace_stept::NONE:
break;
case goto_trace_stept::DECL:
case goto_trace_stept::FUNCTION_CALL:
case goto_trace_stept::FUNCTION_RETURN:
case goto_trace_stept::CONSTRAINT:
case goto_trace_stept::SHARED_READ:
case goto_trace_stept::SHARED_WRITE:
case goto_trace_stept::ATOMIC_BEGIN:
case goto_trace_stept::ATOMIC_END:
case goto_trace_stept::SPAWN:
case goto_trace_stept::MEMORY_BARRIER:
// ignore for now
break;
default:
assert(false);
}
}
open_variables=depends;
// remove the ones that are defined
open_variables.erase(lhs.begin(), lhs.end());
}
