cprover
escape_domaint Class Reference

#include <escape_analysis.h>

Inheritance diagram for escape_domaint:
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Collaboration diagram for escape_domaint:
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Classes

struct  cleanupt
 

Public Types

typedef union_find< irep_idtaliasest
 
typedef std::map< irep_idt, cleanuptcleanup_mapt
 
- Public Types inherited from ai_domain_baset
typedef goto_programt::const_targett locationt
 

Public Member Functions

 escape_domaint ()
 
void transform (locationt from, locationt to, ai_baset &ai, const namespacet &ns) final override
 how function calls are treated: a) there is an edge from each call site to the function head b) there is an edge from the last instruction (END_FUNCTION) of the function to the instruction following the call site (this also needs to set the LHS, if applicable) More...
 
void output (std::ostream &out, const ai_baset &ai, const namespacet &ns) const final override
 
bool merge (const escape_domaint &b, locationt from, locationt to)
 
void make_bottom () final override
 no states More...
 
void make_top () final override
 all states – the analysis doesn't use this, and domains may refuse to implement it. More...
 
bool is_bottom () const override final
 
bool is_top () const override final
 
void make_entry () override final
 a reasonable entry-point state More...
 
- Public Member Functions inherited from ai_domain_baset
virtual ~ai_domain_baset ()
 
virtual jsont output_json (const ai_baset &ai, const namespacet &ns) const
 
virtual xmlt output_xml (const ai_baset &ai, const namespacet &ns) const
 
virtual bool ai_simplify (exprt &condition, const namespacet &ns) const
 also add More...
 
virtual bool ai_simplify_lhs (exprt &condition, const namespacet &ns) const
 Simplifies the expression but keeps it as an l-value. More...
 
virtual exprt to_predicate (void) const
 Gives a Boolean condition that is true for all values represented by the domain. More...
 

Public Attributes

aliasest aliases
 
cleanup_mapt cleanup_map
 

Private Member Functions

void assign_lhs_cleanup (const exprt &, const std::set< irep_idt > &)
 
void get_rhs_cleanup (const exprt &, std::set< irep_idt > &)
 
void assign_lhs_aliases (const exprt &, const std::set< irep_idt > &)
 
void get_rhs_aliases (const exprt &, std::set< irep_idt > &)
 
void get_rhs_aliases_address_of (const exprt &, std::set< irep_idt > &)
 
irep_idt get_function (const exprt &)
 
void check_lhs (const exprt &, std::set< irep_idt > &)
 
bool is_tracked (const symbol_exprt &)
 

Private Attributes

tvt has_values
 

Friends

class escape_analysist
 

Additional Inherited Members

- Protected Member Functions inherited from ai_domain_baset
 ai_domain_baset ()
 The constructor is expected to produce 'false' or 'bottom'. More...
 

Detailed Description

Definition at line 24 of file escape_analysis.h.

Member Typedef Documentation

◆ aliasest

Definition at line 80 of file escape_analysis.h.

◆ cleanup_mapt

Definition at line 91 of file escape_analysis.h.

Constructor & Destructor Documentation

◆ escape_domaint()

escape_domaint::escape_domaint ( )
inline

Definition at line 27 of file escape_analysis.h.

Member Function Documentation

◆ assign_lhs_aliases()

void escape_domaint::assign_lhs_aliases ( const exprt lhs,
const std::set< irep_idt > &  alias_set 
)
private

◆ assign_lhs_cleanup()

void escape_domaint::assign_lhs_cleanup ( const exprt lhs,
const std::set< irep_idt > &  cleanup_functions 
)
private

◆ check_lhs()

void escape_domaint::check_lhs ( const exprt lhs,
std::set< irep_idt > &  cleanup_functions 
)
private

◆ get_function()

irep_idt escape_domaint::get_function ( const exprt lhs)
private

◆ get_rhs_aliases()

void escape_domaint::get_rhs_aliases ( const exprt rhs,
std::set< irep_idt > &  alias_set 
)
private

◆ get_rhs_aliases_address_of()

void escape_domaint::get_rhs_aliases_address_of ( const exprt rhs,
std::set< irep_idt > &  alias_set 
)
private

◆ get_rhs_cleanup()

void escape_domaint::get_rhs_cleanup ( const exprt rhs,
std::set< irep_idt > &  cleanup_functions 
)
private

◆ is_bottom()

bool escape_domaint::is_bottom ( ) const
inlinefinaloverridevirtual

◆ is_top()

bool escape_domaint::is_top ( ) const
inlinefinaloverridevirtual

◆ is_tracked()

bool escape_domaint::is_tracked ( const symbol_exprt symbol)
private

◆ make_bottom()

void escape_domaint::make_bottom ( )
inlinefinaloverridevirtual

no states

Implements ai_domain_baset.

Definition at line 45 of file escape_analysis.h.

References aliases, cleanup_map, union_find< T >::clear(), and has_values.

◆ make_entry()

void escape_domaint::make_entry ( )
inlinefinaloverridevirtual

a reasonable entry-point state

Implements ai_domain_baset.

Definition at line 75 of file escape_analysis.h.

References make_top().

◆ make_top()

void escape_domaint::make_top ( )
inlinefinaloverridevirtual

all states – the analysis doesn't use this, and domains may refuse to implement it.

Implements ai_domain_baset.

Definition at line 52 of file escape_analysis.h.

References aliases, cleanup_map, union_find< T >::clear(), and has_values.

Referenced by make_entry().

◆ merge()

◆ output()

void escape_domaint::output ( std::ostream &  out,
const ai_baset ai,
const namespacet ns 
) const
finaloverridevirtual

◆ transform()

void escape_domaint::transform ( locationt  from,
locationt  to,
ai_baset ai,
const namespacet ns 
)
finaloverridevirtual

how function calls are treated: a) there is an edge from each call site to the function head b) there is an edge from the last instruction (END_FUNCTION) of the function to the instruction following the call site (this also needs to set the LHS, if applicable)

"this" is the domain before the instruction "from" "from" is the instruction to be interpretted "to" is the next instruction (for GOTO, FUNCTION_CALL, END_FUNCTION)

PRECONDITION(from.is_dereferenceable(), "Must not be _::end()") PRECONDITION(to.is_dereferenceable(), "Must not be _::end()") PRECONDITION(are_comparable(from,to) || (from->is_function_call() || from->is_end_function())

Implements ai_domain_baset.

Definition at line 164 of file escape_analysis.cpp.

References aliases, code_function_callt::arguments(), ASSIGN, assign_lhs_aliases(), assign_lhs_cleanup(), cleanup_map, goto_programt::instructiont::code, DEAD, DECL, dstringt::empty(), END_FUNCTION, code_function_callt::function(), FUNCTION_CALL, get_function(), symbol_exprt::get_identifier(), code_declt::get_identifier(), code_deadt::get_identifier(), get_rhs_aliases(), get_rhs_cleanup(), has_values, tvt::is_false(), union_find< T >::isolate(), code_assignt::lhs(), code_assignt::rhs(), code_declt::symbol(), code_deadt::symbol(), to_code_assign(), to_code_dead(), to_code_decl(), to_code_function_call(), to_symbol_expr(), and goto_programt::instructiont::type.

Friends And Related Function Documentation

◆ escape_analysist

friend class escape_analysist
friend

Definition at line 104 of file escape_analysis.h.

Member Data Documentation

◆ aliases

◆ cleanup_map

◆ has_values

tvt escape_domaint::has_values
private

Definition at line 95 of file escape_analysis.h.

Referenced by is_bottom(), is_top(), make_bottom(), make_top(), merge(), output(), and transform().


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