remove_exceptions.cpp File Reference

#include "remove_exceptions.h"
#include "remove_instanceof.h"
#include <algorithm>
#include <util/c_types.h>
#include <util/pointer_expr.h>
#include <util/std_code.h>
#include <util/symbol_table.h>
#include <goto-programs/goto_model.h>
#include <goto-programs/remove_skip.h>
#include <analyses/uncaught_exceptions_analysis.h>
#include <linking/static_lifetime_init.h>
#include "java_expr.h"
#include "java_types.h"

Include dependency graph for remove_exceptions.cpp:

Go to the source code of this file.

Classes
class	remove_exceptionst
	Lowers high-level exception descriptions into low-level operations suitable for symex and other analyses that don't understand the THROW or CATCH GOTO instructions. More...

Functions
void	remove_exceptions_using_instanceof (symbol_table_baset &symbol_table, goto_functionst &goto_functions, message_handlert &message_handler)
	removes throws/CATCH-POP/CATCH-PUSH More...
void	remove_exceptions_using_instanceof (const irep_idt &function_identifier, goto_programt &goto_program, symbol_table_baset &symbol_table, message_handlert &message_handler)
	removes throws/CATCH-POP/CATCH-PUSH from a single GOTO program, replacing them with explicit exception propagation. More...
void	remove_exceptions_using_instanceof (goto_modelt &goto_model, message_handlert &message_handler)
	removes throws/CATCH-POP/CATCH-PUSH, replacing them with explicit exception propagation. More...
void	remove_exceptions (symbol_table_baset &symbol_table, goto_functionst &goto_functions, const class_hierarchyt &class_hierarchy, message_handlert &message_handler)
	removes throws/CATCH-POP/CATCH-PUSH More...
void	remove_exceptions (const irep_idt &function_identifier, goto_programt &goto_program, symbol_table_baset &symbol_table, const class_hierarchyt &class_hierarchy, message_handlert &message_handler)
	removes throws/CATCH-POP/CATCH-PUSH from a single GOTO program, replacing them with explicit exception propagation. More...
void	remove_exceptions (goto_modelt &goto_model, const class_hierarchyt &class_hierarchy, message_handlert &message_handler)
	removes throws/CATCH-POP/CATCH-PUSH, replacing them with explicit exception propagation. More...

Detailed Description

Remove exception handling

Definition in file remove_exceptions.cpp.

Function Documentation

remove_exceptions() [1/3]

void remove_exceptions	(	const irep_idt &	function_identifier,
		goto_programt &	goto_program,
		symbol_table_baset &	symbol_table,
		const class_hierarchyt &	class_hierarchy,
		message_handlert &	message_handler
	)

removes throws/CATCH-POP/CATCH-PUSH from a single GOTO program, replacing them with explicit exception propagation.

Removes 'throw x' and CATCH-PUSH/CATCH-POP and adds the required instrumentation (GOTOs and assignments) This does not introduce instanceof expressions.

Note this is somewhat less accurate than the whole-goto-model version, because we can't inspect other functions to determine whether they throw or not, and therefore must assume they do and always introduce post-call exception dispatch.

Parameters

function_identifier	name of the goto function being processed
goto_program	program to remove exceptions from
symbol_table	global symbol table. The @inflight_exception global may be added if not already present. It will not be initialised; that is the caller's responsibility.
class_hierarchy	class hierarchy analysis of symbol_table. Only needed if type == REMOVE_ADDED_INSTANCEOF; otherwise may be null.
message_handler	logging output

Definition at line 727 of file remove_exceptions.cpp.

remove_exceptions() [2/3]

void remove_exceptions	(	goto_modelt &	goto_model,
		const class_hierarchyt &	class_hierarchy,
		message_handlert &	message_handler
	)

removes throws/CATCH-POP/CATCH-PUSH, replacing them with explicit exception propagation.

Removes 'throw x' and CATCH-PUSH/CATCH-POP and adds the required instrumentation (GOTOs and assignments) This does not introduce instanceof expressions.

Parameters

goto_model	model to remove exceptions from. The @inflight_exception global may be added to its symbol table if not already present. It will not be initialised; that is the caller's responsibility.
class_hierarchy	class hierarchy analysis of symbol_table. Only needed if type == REMOVE_ADDED_INSTANCEOF; otherwise may be null.
message_handler	logging output

Definition at line 756 of file remove_exceptions.cpp.

remove_exceptions() [3/3]

void remove_exceptions	(	symbol_table_baset &	symbol_table,
		goto_functionst &	goto_functions,
		const class_hierarchyt &	class_hierarchy,
		message_handlert &	message_handler
	)

removes throws/CATCH-POP/CATCH-PUSH

Definition at line 691 of file remove_exceptions.cpp.

remove_exceptions_using_instanceof() [1/3]

void remove_exceptions_using_instanceof	(	const irep_idt &	function_identifier,
		goto_programt &	goto_program,
		symbol_table_baset &	symbol_table,
		message_handlert &	message_handler
	)

removes throws/CATCH-POP/CATCH-PUSH from a single GOTO program, replacing them with explicit exception propagation.

Removes 'throw x' and CATCH-PUSH/CATCH-POP and adds the required instrumentation (GOTOs and assignments) This introduces instanceof expressions.

Note this is somewhat less accurate than the whole-goto-model version, because we can't inspect other functions to determine whether they throw or not, and therefore must assume they do and always introduce post-call exception dispatch.

Parameters

function_identifier	name of the goto function being processed
goto_program	program to remove exceptions from
symbol_table	global symbol table. The @inflight_exception global may be added if not already present. It will not be initialised; that is the caller's responsibility.
message_handler	logging output

Definition at line 660 of file remove_exceptions.cpp.

remove_exceptions_using_instanceof() [2/3]

void remove_exceptions_using_instanceof	(	goto_modelt &	goto_model,
		message_handlert &	message_handler
	)

removes throws/CATCH-POP/CATCH-PUSH, replacing them with explicit exception propagation.

Removes 'throw x' and CATCH-PUSH/CATCH-POP and adds the required instrumentation (GOTOs and assignments) This introduces instanceof expressions.

Parameters

goto_model	model to remove exceptions from. The @inflight_exception global may be added to its symbol table if not already present. It will not be initialised; that is the caller's responsibility.
message_handler	logging output

Definition at line 682 of file remove_exceptions.cpp.

remove_exceptions_using_instanceof() [3/3]

void remove_exceptions_using_instanceof	(	symbol_table_baset &	symbol_table,
		goto_functionst &	goto_functions,
		message_handlert &	message_handler
	)

removes throws/CATCH-POP/CATCH-PUSH

Definition at line 627 of file remove_exceptions.cpp.