cprover
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#include "java_object_factory.h"
#include <util/expr_initializer.h>
#include <util/fresh_symbol.h>
#include <util/nondet_bool.h>
#include <util/nondet.h>
#include <util/pointer_offset_size.h>
#include <goto-programs/class_identifier.h>
#include <goto-programs/goto_functions.h>
#include "generic_parameter_specialization_map_keys.h"
#include "java_root_class.h"
#include "java_string_literals.h"
Go to the source code of this file.
Classes | |
class | java_object_factoryt |
class | recursion_set_entryt |
Recursion-set entry owner class. More... | |
Functions | |
exprt | allocate_dynamic_object (const exprt &target_expr, const typet &allocate_type, symbol_table_baset &symbol_table, const source_locationt &loc, const irep_idt &function_id, code_blockt &output_code, std::vector< const symbolt * > &symbols_created, bool cast_needed) |
Generates code for allocating a dynamic object. More... | |
exprt | allocate_dynamic_object_with_decl (const exprt &target_expr, symbol_table_baset &symbol_table, const source_locationt &loc, const irep_idt &function_id, code_blockt &output_code) |
Generates code for allocating a dynamic object. More... | |
static mp_integer | max_value (const typet &type) |
Get max value for an integer type. More... | |
void | initialize_nondet_string_fields (struct_exprt &struct_expr, code_blockt &code, const std::size_t &min_nondet_string_length, const std::size_t &max_nondet_string_length, const source_locationt &loc, const irep_idt &function_id, symbol_table_baset &symbol_table, bool printable) |
Initialise length and data fields for a nondeterministic String structure. More... | |
alternate_casest | get_string_input_values_code (const exprt &expr, const std::list< std::string > &string_input_values, symbol_table_baset &symbol_table) |
Creates an alternate_casest vector in which each item contains an assignment of a string from string_input_values (or more precisely the literal symbol corresponding to the string) to expr . More... | |
static void | declare_created_symbols (const std::vector< const symbolt * > &symbols_created, const source_locationt &loc, code_blockt &init_code) |
Add code_declt instructions to init_code for every non-static symbol in symbols_created More... | |
exprt | object_factory (const typet &type, const irep_idt base_name, code_blockt &init_code, symbol_table_baset &symbol_table, java_object_factory_parameterst parameters, allocation_typet alloc_type, const source_locationt &loc, const select_pointer_typet &pointer_type_selector) |
Similar to gen_nondet_init below, but instead of allocating and non-deterministically initializing the the argument expr passed to that function, we create a static global object of type type and non-deterministically initialize it. More... | |
void | gen_nondet_init (const exprt &expr, code_blockt &init_code, symbol_table_baset &symbol_table, const source_locationt &loc, bool skip_classid, allocation_typet alloc_type, const java_object_factory_parameterst &object_factory_parameters, const select_pointer_typet &pointer_type_selector, update_in_placet update_in_place) |
Initializes a primitive-typed or reference-typed object tree rooted at expr , allocating child objects as necessary and nondet-initializing their members, or if MAY_ or MUST_UPDATE_IN_PLACE is set, re-initializing already-allocated objects. More... | |
exprt | object_factory (const typet &type, const irep_idt base_name, code_blockt &init_code, symbol_tablet &symbol_table, const java_object_factory_parameterst &object_factory_parameters, allocation_typet alloc_type, const source_locationt &location) |
Call object_factory() above with a default (identity) pointer_type_selector. More... | |
void | gen_nondet_init (const exprt &expr, code_blockt &init_code, symbol_table_baset &symbol_table, const source_locationt &loc, bool skip_classid, allocation_typet alloc_type, const java_object_factory_parameterst &object_factory_parameters, update_in_placet update_in_place) |
Call gen_nondet_init() above with a default (identity) pointer_type_selector. More... | |
exprt allocate_dynamic_object | ( | const exprt & | target_expr, |
const typet & | allocate_type, | ||
symbol_table_baset & | symbol_table, | ||
const source_locationt & | loc, | ||
const irep_idt & | function_id, | ||
code_blockt & | output_code, | ||
std::vector< const symbolt * > & | symbols_created, | ||
bool | cast_needed | ||
) |
Generates code for allocating a dynamic object.
This is used in allocate_object() and also in the library preprocessing for allocating strings.
target_expr | expression to which the necessary memory will be allocated, its type should be pointer to allocate_type |
allocate_type | type of the object allocated |
symbol_table | symbol table |
loc | location in the source |
function_id | function ID to associate with auxiliary variables |
output_code | code block to which the necessary code is added |
symbols_created | created symbols to be declared by the caller |
cast_needed | Boolean flags saying where we need to cast the malloc site |
Definition at line 187 of file java_object_factory.cpp.
exprt allocate_dynamic_object_with_decl | ( | const exprt & | target_expr, |
symbol_table_baset & | symbol_table, | ||
const source_locationt & | loc, | ||
const irep_idt & | function_id, | ||
code_blockt & | output_code | ||
) |
Generates code for allocating a dynamic object.
This is a static version of allocate_dynamic_object that can be called from outside java_object_factory and which takes care of creating the associated declarations.
target_expr | expression to which the necessary memory will be allocated |
symbol_table | symbol table |
loc | location in the source |
function_id | function ID to associate with auxiliary variables |
output_code | code block to which the necessary code is added |
Definition at line 251 of file java_object_factory.cpp.
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static |
Add code_declt instructions to init_code
for every non-static symbol in symbols_created
symbols_created | list of symbols | |
loc | source location for new code_declt instances | |
[out] | init_code | gets code_declt for each symbol |
Definition at line 1561 of file java_object_factory.cpp.
void gen_nondet_init | ( | const exprt & | expr, |
code_blockt & | init_code, | ||
symbol_table_baset & | symbol_table, | ||
const source_locationt & | loc, | ||
bool | skip_classid, | ||
allocation_typet | alloc_type, | ||
const java_object_factory_parameterst & | object_factory_parameters, | ||
const select_pointer_typet & | pointer_type_selector, | ||
update_in_placet | update_in_place | ||
) |
Initializes a primitive-typed or reference-typed object tree rooted at expr
, allocating child objects as necessary and nondet-initializing their members, or if MAY_ or MUST_UPDATE_IN_PLACE is set, re-initializing already-allocated objects.
expr | Lvalue expression to initialize. | |
[out] | init_code | A code block where the initializing assignments will be appended to. It gets an instruction sequence to initialize or reinitialize expr and child objects it refers to. |
symbol_table | The symbol table, where new variables created as a result of emitting code to init_code will be inserted to. This includes any necessary temporaries, and if create_dyn_objs is false, any allocated objects. | |
loc | Source location to which all generated code will be associated to. | |
skip_classid | If true, skip initializing field @class_identifier . | |
alloc_type | Allocate new objects as global objects (GLOBAL) or as local variables (LOCAL) or using malloc (DYNAMIC). | |
object_factory_parameters | Parameters for the generation of non deterministic objects. | |
pointer_type_selector | The pointer_selector to use to resolve pointer types where required. | |
update_in_place | NO_UPDATE_IN_PLACE: initialize expr from scratch MAY_UPDATE_IN_PLACE: generate a runtime nondet branch between the NO_ and MUST_ cases. MUST_UPDATE_IN_PLACE: reinitialize an existing object |
init_code
gets an instruction sequence to initialize or reinitialize expr
and child objects it refers to. symbol_table
is modified with any new symbols created. This includes any necessary temporaries, and if create_dyn_objs
is false, any allocated objects. Definition at line 1681 of file java_object_factory.cpp.
void gen_nondet_init | ( | const exprt & | expr, |
code_blockt & | init_code, | ||
symbol_table_baset & | symbol_table, | ||
const source_locationt & | loc, | ||
bool | skip_classid, | ||
allocation_typet | alloc_type, | ||
const java_object_factory_parameterst & | object_factory_parameters, | ||
update_in_placet | update_in_place | ||
) |
Call gen_nondet_init() above with a default (identity) pointer_type_selector.
Definition at line 1742 of file java_object_factory.cpp.
alternate_casest get_string_input_values_code | ( | const exprt & | expr, |
const std::list< std::string > & | string_input_values, | ||
symbol_table_baset & | symbol_table | ||
) |
Creates an alternate_casest vector in which each item contains an assignment of a string from string_input_values
(or more precisely the literal symbol corresponding to the string) to expr
.
expr | Struct-typed lvalue expression to which we want to assign the strings. |
string_input_values | Strings to assign. |
symbol_table | The symbol table in which we'll lool up literal symbol |
Definition at line 952 of file java_object_factory.cpp.
void initialize_nondet_string_fields | ( | struct_exprt & | struct_expr, |
code_blockt & | code, | ||
const std::size_t & | min_nondet_string_length, | ||
const std::size_t & | max_nondet_string_length, | ||
const source_locationt & | loc, | ||
const irep_idt & | function_id, | ||
symbol_table_baset & | symbol_table, | ||
bool | printable | ||
) |
Initialise length and data fields for a nondeterministic String structure.
If the structure is not a nondeterministic structure, the call results in a precondition violation.
struct_expr | [out]: struct that we initialize |
code | block to add pre-requisite declarations (e.g. to allocate a data array) |
min_nondet_string_length | minimum length of strings to initialize |
max_nondet_string_length | maximum length of strings to initialize |
loc | location in the source |
function_id | function ID to associate with auxiliary variables |
symbol_table | the symbol table |
printable | if true, the nondet string must consist of printable characters only |
The code produced is of the form:
Unit tests in unit/java_bytecode/java_object_factory/
ensure it is the case.
Definition at line 568 of file java_object_factory.cpp.
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static |
Get max value for an integer type.
type | Type to find maximum value for |
Definition at line 522 of file java_object_factory.cpp.
exprt object_factory | ( | const typet & | type, |
const irep_idt | base_name, | ||
code_blockt & | init_code, | ||
symbol_table_baset & | symbol_table, | ||
java_object_factory_parameterst | parameters, | ||
allocation_typet | alloc_type, | ||
const source_locationt & | loc, | ||
const select_pointer_typet & | pointer_type_selector | ||
) |
Similar to gen_nondet_init
below, but instead of allocating and non-deterministically initializing the the argument expr
passed to that function, we create a static global object of type type
and non-deterministically initialize it.
See gen_nondet_init for a description of the parameters. The only new one is type
, which is the type of the object to create.
symbol_table
gains any new symbols created, and init_code
gains any instructions requried to initialize either the returned value or its child objects Definition at line 1590 of file java_object_factory.cpp.
exprt object_factory | ( | const typet & | type, |
const irep_idt | base_name, | ||
code_blockt & | init_code, | ||
symbol_tablet & | symbol_table, | ||
const java_object_factory_parameterst & | object_factory_parameters, | ||
allocation_typet | alloc_type, | ||
const source_locationt & | location | ||
) |
Call object_factory() above with a default (identity) pointer_type_selector.
Definition at line 1720 of file java_object_factory.cpp.