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Public Member Functions | List of all members

string_to_lower_case_builtin_functiont Class Reference

Converting each uppercase character of Basic Latin and Latin-1 supplement to the corresponding lowercase character. More...

#include <string_builtin_function.h>

+ Inheritance diagram for string_to_lower_case_builtin_functiont:

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+ Collaboration diagram for string_to_lower_case_builtin_functiont:

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Public Member Functions

string_to_lower_case_builtin_functiont (const exprt &return_code, const std::vector< exprt > &fun_args, array_poolt &array_pool)

std::optional< exprt > eval (const std::function< exprt(const exprt &)> &get_value) const override

Given a function get_value which gives a valuation to expressions, attempt to find the result of the builtin function.

std::string name () const override

string_constraintst constraints (string_constraint_generatort &generator, message_handlert &message_handler) const override

Set of constraints ensuring result corresponds to input in which uppercase characters have been converted to lowercase.

exprt length_constraint () const override

Constraint ensuring that the length of the strings are coherent with the function call.

- Public Member Functions inherited from string_transformation_builtin_functiont

string_transformation_builtin_functiont (exprt return_code, array_string_exprt result, array_string_exprt input, array_poolt &array_pool)

string_transformation_builtin_functiont (const exprt &return_code, const std::vector< exprt > &fun_args, array_poolt &array_pool)

Constructor from arguments of a function application.

std::optional< array_string_exprt > string_result () const override

std::vector< array_string_exprt > string_arguments () const override

bool maybe_testing_function () const override

Tells whether the builtin function can be a testing function, that is a function that does not return a string, for instance like equals, indexOf or compare.

- Public Member Functions inherited from string_builtin_functiont

string_builtin_functiont ()=delete

string_builtin_functiont (const string_builtin_functiont &)=delete

virtual ~string_builtin_functiont ()=default

Additional Inherited Members

- Public Attributes inherited from string_transformation_builtin_functiont

array_string_exprt result

array_string_exprt input

- Public Attributes inherited from string_builtin_functiont

exprt return_code

- Protected Member Functions inherited from string_builtin_functiont

string_builtin_functiont (exprt return_code, array_poolt &array_pool)

- Protected Attributes inherited from string_builtin_functiont

array_poolt & array_pool

Detailed Description

Converting each uppercase character of Basic Latin and Latin-1 supplement to the corresponding lowercase character.

Definition at line 249 of file string_builtin_function.h.

Constructor & Destructor Documentation

◆ string_to_lower_case_builtin_functiont()

string_to_lower_case_builtin_functiont::string_to_lower_case_builtin_functiont ( const exprt & return_code,

const std::vector< exprt > & fun_args,

array_poolt & array_pool

)

inline

Definition at line 253 of file string_builtin_function.h.

Member Function Documentation

◆ constraints()

string_constraintst string_to_lower_case_builtin_functiont::constraints ( string_constraint_generatort & generator,

message_handlert & message_handler

) const

overridevirtual

Set of constraints ensuring result corresponds to input in which uppercase characters have been converted to lowercase.

These constraints are:

result.length = input.length && return_code = 0
forall i < input.length. result[i] = is_upper_case(input[i]) ? input[i] + diff : input[i]

Where diff is the difference between lower case and upper case characters: ‘diff = 'a’-'A' = 0x20andis_upper_case` is true for the upper case characters of Basic Latin and Latin-1 supplement of unicode.

Implements string_builtin_functiont.

Definition at line 285 of file string_builtin_function.cpp.

◆ eval()

std::optional< exprt > string_to_lower_case_builtin_functiont::eval ( const std::function< exprt(const exprt &)> & get_value ) const

overridevirtual

Given a function get_value which gives a valuation to expressions, attempt to find the result of the builtin function.

If not enough information can be gathered from get_value, return an empty optional.

Implements string_builtin_functiont.

Definition at line 220 of file string_builtin_function.cpp.

◆ length_constraint()

exprt string_to_lower_case_builtin_functiont::length_constraint ( ) const

inlineoverridevirtual

Constraint ensuring that the length of the strings are coherent with the function call.

Implements string_builtin_functiont.

Definition at line 273 of file string_builtin_function.h.

◆ name()

std::string string_to_lower_case_builtin_functiont::name ( ) const

inlineoverridevirtual

Implements string_builtin_functiont.

Definition at line 264 of file string_builtin_function.h.

The documentation for this class was generated from the following files:

/home/runner/work/cbmc/cbmc/src/solvers/strings/string_builtin_function.h
/home/runner/work/cbmc/cbmc/src/solvers/strings/string_builtin_function.cpp