cprover
cover_instrument_condition.cpp
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1 /*******************************************************************\
2 
3 Module: Coverage Instrumentation
4 
5 Author: Daniel Kroening
6 
7 \*******************************************************************/
8 
11 
12 #include "cover_instrument.h"
13 
14 #include <langapi/language_util.h>
15 
16 #include "cover_util.h"
17 #include "cover_basic_blocks.h"
18 
20  goto_programt &goto_program,
22  const cover_blocks_baset &) const
23 {
24  if(is_non_cover_assertion(i_it))
25  i_it->make_skip();
26 
27  // Conditions are all atomic predicates in the programs.
28  if(!i_it->source_location.is_built_in())
29  {
30  const std::set<exprt> conditions = collect_conditions(i_it);
31 
32  const source_locationt source_location = i_it->source_location;
33 
34  for(const auto &c : conditions)
35  {
36  const std::string c_string = from_expr(ns, i_it->function, c);
37 
38  const std::string comment_t = "condition `" + c_string + "' true";
39  const irep_idt function = i_it->function;
40  goto_program.insert_before_swap(i_it);
41  i_it->make_assertion(c);
42  i_it->source_location = source_location;
43  initialize_source_location(i_it, comment_t, function);
44 
45  const std::string comment_f = "condition `" + c_string + "' false";
46  goto_program.insert_before_swap(i_it);
47  i_it->make_assertion(not_exprt(c));
48  i_it->source_location = source_location;
49  initialize_source_location(i_it, comment_f, function);
50  }
51 
52  for(std::size_t i = 0; i < conditions.size() * 2; i++)
53  i_it++;
54  }
55 }
dstringt
dstringt has one field, an unsigned integer no which is an index into a static table of strings.
Definition: dstring.h:35
cover_instrumenter_baset::is_non_cover_assertion
bool is_non_cover_assertion(goto_programt::const_targett t) const
Definition: cover_instrument.h:77
cover_instrumenter_baset::ns
const namespacet ns
Definition: cover_instrument.h:56
cover_condition_instrumentert::instrument
void instrument(goto_programt &, goto_programt::targett &, const cover_blocks_baset &) const override
Override this method to implement an instrumenter.
Definition: cover_instrument_condition.cpp:19
language_util.h
cover_instrument.h
cover_blocks_baset
Definition: cover_basic_blocks.h:21
collect_conditions
std::set< exprt > collect_conditions(const exprt &src)
Definition: cover_util.cpp:42
cover_instrumenter_baset::initialize_source_location
void initialize_source_location(goto_programt::targett t, const std::string &comment, const irep_idt &function) const
Definition: cover_instrument.h:65
source_locationt
Definition: source_location.h:20
cover_basic_blocks.h
goto_programt
A generic container class for the GOTO intermediate representation of one function.
Definition: goto_program.h:72
goto_programt::insert_before_swap
void insert_before_swap(targett target)
Insertion that preserves jumps to "target".
Definition: goto_program.h:477
cover_util.h
from_expr
std::string from_expr(const namespacet &ns, const irep_idt &identifier, const exprt &expr)
Definition: language_util.cpp:20
goto_programt::targett
instructionst::iterator targett
Definition: goto_program.h:414
not_exprt
Boolean negation.
Definition: std_expr.h:3308