cprover
destructor.cpp
Go to the documentation of this file.
1 /*******************************************************************\
2 
3 Module: Destructor Calls
4 
5 Author: Daniel Kroening, kroening@kroening.com
6 
7 \*******************************************************************/
8 
11 
12 #include "destructor.h"
13 
14 #include <util/std_expr.h>
15 #include <util/std_types.h>
16 #include <util/std_code.h>
17 
19  const namespacet &ns,
20  const typet &type)
21 {
22  if(type.id()==ID_symbol)
23  {
24  return get_destructor(ns, ns.follow(type));
25  }
26  else if(type.id()==ID_struct)
27  {
28  const exprt &methods=static_cast<const exprt&>(type.find(ID_methods));
29 
30  forall_operands(it, methods)
31  {
32  if(it->type().id()==ID_code)
33  {
34  const code_typet &code_type=to_code_type(it->type());
35 
36  if(code_type.return_type().id()==ID_destructor &&
37  code_type.parameters().size()==1)
38  {
39  const typet &arg_type=code_type.parameters().front().type();
40 
41  if(arg_type.id()==ID_pointer &&
42  ns.follow(arg_type.subtype())==type)
43  {
44  const symbol_exprt symbol_expr(it->get(ID_name), it->type());
45 
46  code_function_callt function_call;
47  function_call.function()=symbol_expr;
48 
49  return function_call;
50  }
51  }
52  }
53  }
54  }
55 
56  return static_cast<const code_function_callt &>(get_nil_irep());
57 }
const irept & get_nil_irep()
Definition: irep.cpp:56
The type of an expression.
Definition: type.h:22
Base type of functions.
Definition: std_types.h:764
const code_typet & to_code_type(const typet &type)
Cast a generic typet to a code_typet.
Definition: std_types.h:987
Destructor Calls.
typet & type()
Definition: expr.h:56
const irep_idt & id() const
Definition: irep.h:189
API to expression classes.
TO_BE_DOCUMENTED.
Definition: namespace.h:74
A function call.
Definition: std_code.h:828
#define forall_operands(it, expr)
Definition: expr.h:17
const typet & follow(const typet &) const
Definition: namespace.cpp:55
API to type classes.
exprt & function()
Definition: std_code.h:848
Base class for all expressions.
Definition: expr.h:42
const parameterst & parameters() const
Definition: std_types.h:905
Expression to hold a symbol (variable)
Definition: std_expr.h:90
code_function_callt get_destructor(const namespacet &ns, const typet &type)
Definition: destructor.cpp:18
const typet & subtype() const
Definition: type.h:33
const irept & find(const irep_namet &name) const
Definition: irep.cpp:285
const typet & return_type() const
Definition: std_types.h:895