CBMC
mathematical_expr.cpp
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1 /*******************************************************************\
2 
3 Module: API to expression classes for 'mathematical' expressions
4 
5 Author: Daniel Kroening, kroening@kroening.com
6 
7 \*******************************************************************/
8 
9 #include "mathematical_expr.h"
10 #include "mathematical_types.h"
11 
13  const exprt &_function,
14  argumentst _arguments)
15  : binary_exprt(
16  _function,
17  ID_function_application,
18  tuple_exprt(std::move(_arguments)),
19  to_mathematical_function_type(_function.type()).codomain())
20 {
21  const auto &domain = function_type().domain();
22  PRECONDITION(domain.size() == arguments().size());
23 }
24 
27 {
28  return to_mathematical_function_type(function().type());
29 }
30 
32 lambda_type(const lambda_exprt::variablest &variables, const exprt &where)
33 {
35 
36  domain.reserve(variables.size());
37 
38  for(const auto &v : variables)
39  domain.push_back(v.type());
40 
41  return mathematical_function_typet(std::move(domain), where.type());
42 }
43 
44 lambda_exprt::lambda_exprt(const variablest &_variables, const exprt &_where)
45  : binding_exprt(
46  ID_lambda,
47  _variables,
48  _where,
49  lambda_type(_variables, _where))
50 {
51 }
A base class for binary expressions.
Definition: std_expr.h:638
A base class for variable bindings (quantifiers, let, lambda)
Definition: std_expr.h:3107
std::vector< symbol_exprt > variablest
Definition: std_expr.h:3109
Base class for all expressions.
Definition: expr.h:56
typet & type()
Return the type of the expression.
Definition: expr.h:84
function_application_exprt(const exprt &_function, argumentst _arguments)
const mathematical_function_typet & function_type() const
This helper method provides the type of the expression returned by function.
lambda_exprt(const variablest &, const exprt &_where)
A type for mathematical functions (do not confuse with functions/methods in code)
std::vector< typet > domaint
static mathematical_function_typet lambda_type(const lambda_exprt::variablest &variables, const exprt &where)
API to expression classes for 'mathematical' expressions.
Mathematical types.
const mathematical_function_typet & to_mathematical_function_type(const typet &type)
Cast a typet to a mathematical_function_typet.
#define PRECONDITION(CONDITION)
Definition: invariant.h:463