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lambda_synthesis.cpp
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1/*******************************************************************\
2
3Module: Java lambda code synthesis
4
5Author: Diffblue Ltd.
6
7\*******************************************************************/
8
11
12#include "lambda_synthesis.h"
13
14#include <util/message.h>
15#include <util/namespace.h>
16#include <util/symbol_table_base.h>
17
18#include "java_bytecode_convert_method.h"
19#include "java_bytecode_parse_tree.h"
20#include "java_static_initializers.h"
21#include "java_types.h"
22#include "java_utils.h"
23#include "synthetic_methods_map.h"
24
25#include <string.h>
26
27 static std::string escape_symbol_special_chars(std::string input)
28{
29 for(auto &c : input)
30 {
31 if(c == '$' || c == ':' || c == '.')
32 c = '_';
33 }
34 return input;
35}
36
39 std::size_t instruction_address)
40{
41 return "java::lambda_synthetic_class$" +
44 "$" + std::to_string(instruction_address);
45}
46
54static std::optional<java_class_typet::java_lambda_method_handlet>
56 const symbol_table_baset &symbol_table,
57 const java_class_typet::java_lambda_method_handlest &lambda_method_handles,
58 const size_t index)
59{
60 // Check if we don't have enough bootstrap methods to satisfy the requested
61 // lambda. This could happen if we fail to parse one of the methods, or if
62 // the class type is partly or entirely synthetic, such as the types created
63 // internally by the string solver.
64 if(index >= lambda_method_handles.size())
65 return {};
66 const auto &lambda_method_handle = lambda_method_handles.at(index);
67 // If the lambda method handle has an unknown type, it does not refer to
68 // any symbol (it has an empty identifier)
69 if(
70 lambda_method_handle.get_handle_kind() !=
73 return {};
74}
75
76static std::optional<java_class_typet::java_lambda_method_handlet>
78 const symbol_table_baset &symbol_table,
81{
82 const namespacet ns{symbol_table};
83 const auto &method_symbol = ns.lookup(method_identifier);
84 const auto &declaring_class_symbol =
85 ns.lookup(*declaring_class(method_symbol));
86
88 const auto &lambda_method_handles = class_type.lambda_method_handles();
92 symbol_table, lambda_method_handles, lambda_handle_index);
93}
94
95 class no_unique_unimplemented_method_exceptiont : public std::exception
96{
97public:
98 explicit no_unique_unimplemented_method_exceptiont(const std::string &s)
99 : message(s)
100 {
101 }
102 const std::string message;
103};
104
106{
109 const java_class_typet::methodt *b) const
110{
111 return a->get_base_name() == b->get_base_name()
112 ? (a->get_descriptor() == b->get_descriptor()
113 ? 0
114 : a->get_descriptor() < b->get_descriptor())
115 : a->get_base_name() < b->get_base_name();
116 }
117};
118
121typedef std::map<
122 const java_class_typet::methodt *,
123 bool,
124 compare_base_name_and_descriptort>
125 methods_by_name_and_descriptort;
126
134static const methods_by_name_and_descriptort
136{
137 static const irep_idt jlo = "java::java.lang.Object";
138 // Terminate recursion at Object; any other base of an interface must
139 // itself be an interface.
140 if(jlo == interface_id)
141 return {};
142
143 const java_class_typet &interface =
144 to_java_class_type(ns.lookup(interface_id).type);
145
146 if(interface.get_is_stub())
147 {
149 "produces a type that inherits the stub type " + id2string(interface_id));
150 }
151
153
154 // First accumulate definitions from child types:
155 for(const auto &base : interface.bases())
156 {
158 get_interface_methods(base.type().get_identifier(), ns);
159 for(const auto &base_method : base_methods)
160 {
161 if(base_method.second)
162 {
163 // Any base definition fills any abstract definition from another base:
164 all_methods[base_method.first] = true;
165 }
166 else
167 {
168 // An abstract method incoming from a base falls to any existing
169 // definition, so only insert if not present:
170 all_methods.emplace(base_method.first, false);
171 }
172 }
173 }
174
175 // Now insert defintions from this class:
176 for(const auto &method : interface.methods())
177 {
178 static const irep_idt equals = "equals";
179 static const irep_idt equals_descriptor = "(Ljava/lang/Object;)Z";
180 static const irep_idt hashCode = "hashCode";
181 static const irep_idt hashCode_descriptor = "()I";
182 if(
183 (method.get_base_name() == equals &&
184 method.get_descriptor() == equals_descriptor) ||
185 (method.get_base_name() == hashCode &&
186 method.get_descriptor() == hashCode_descriptor))
187 {
188 // Ignore any uses of functions that are certainly defined on
189 // java.lang.Object-- even if explicitly made abstract, they can't be the
190 // implemented method of a functional interface.
191 continue;
192 }
193
194 // Note unlike inherited definitions, an abstract definition here *does*
195 // wipe out a non-abstract definition (i.e. a default method) from a parent
196 // type.
197 all_methods[&method] =
198 !ns.lookup(method.get_name()).type.get_bool(ID_C_abstract);
199 }
200
201 return all_methods;
202}
203
205 const symbol_table_baset &symbol_table,
208 const int instruction_address,
209 const messaget &log)
210{
211 const namespacet ns{symbol_table};
212 try
213 {
216
218 nullptr;
219
220 for(const auto &entry : all_methods)
221 {
222 if(!entry.second)
223 {
225 {
227 "produces a type with at least two unimplemented methods");
228 }
230 }
231 }
232
234 {
236 "produces a type with no unimplemented methods");
237 }
239 }
241 {
242 log.debug() << "ignoring invokedynamic at " << method_identifier
243 << " address " << instruction_address << " with type "
244 << functional_interface_tag.get_identifier() << " which "
245 << e.message << "." << messaget::eom;
246 return {};
247 }
248}
249
255{
257 // Tag = name without 'java::' prefix, matching the convention used by
258 // java_bytecode_convert_class.cpp
259 synthetic_class_type.set_tag(
262 synthetic_class_type.set_synthetic(true);
264 struct_tag_typet base_tag("java::java.lang.Object");
267
268 // Add the class fields:
269
270 {
272 const irep_idt base_field_name("@java.lang.Object");
273 base_field.set_name(base_field_name);
274 base_field.set_base_name(base_field_name);
275 base_field.set_pretty_name(base_field_name);
276 base_field.set_access(ID_private);
277 base_field.type() = base_tag;
278 synthetic_class_type.components().emplace_back(std::move(base_field));
279
280 std::size_t field_idx = 0;
281 for(const auto &param : dynamic_method_type.parameters())
282 {
283 irep_idt field_basename = "capture_" + std::to_string(field_idx++);
284
286 new_field.set_name(field_basename);
287 new_field.set_base_name(field_basename);
288 new_field.set_pretty_name(field_basename);
289 new_field.set_access(ID_private);
290 new_field.type() = param.type();
291 synthetic_class_type.components().emplace_back(std::move(new_field));
292 }
293 }
294
296}
297
299 synthetic_methods_mapt &synthetic_methods,
301 java_method_typet constructor_type) // dynamic_method_type
302{
305 constructor_symbol.pretty_name = constructor_symbol.name;
306 constructor_symbol.base_name = "<init>";
307
308 synthetic_methods[constructor_name] =
310
311 constructor_type.set_is_constructor();
312 constructor_type.return_type() = empty_typet();
313
314 size_t field_idx = 0;
315 for(auto &param : constructor_type.parameters())
316 {
317 irep_idt param_basename = "param_" + std::to_string(field_idx++);
318 param.set_base_name(param_basename);
319 param.set_identifier(
321 }
322
325 constructor_this_param.set_this();
326 constructor_this_param.set_base_name("this");
327 constructor_this_param.set_identifier(id2string(constructor_name) + "::this");
328
329 constructor_type.parameters().insert(
330 constructor_type.parameters().begin(), constructor_this_param);
331
332 constructor_symbol.type = constructor_type;
334 return constructor_symbol;
335}
336
338 synthetic_methods_mapt &synthetic_methods,
341{
342 const std::string implemented_method_name =
344 id2string(method_to_implement.get_base_name()) + ":" +
345 id2string(method_to_implement.get_descriptor());
346
349 synthetic_methods[implemented_method_symbol.name] =
352 implemented_method_symbol.base_name = method_to_implement.get_base_name();
354 implemented_method_type.parameters()[0].type() =
356
357 size_t field_idx = 0;
358 for(auto &param : implemented_method_type.parameters())
359 {
361 field_idx == 0 ? "this" : "param_" + std::to_string(field_idx);
362 param.set_base_name(param_basename);
363 param.set_identifier(
365
366 ++field_idx;
367 }
368
371}
372
373// invokedynamic will be called with operands that should be stored in a
374// synthetic object implementing the interface type that it returns. For
375// example, "invokedynamic f(a, b, c) -> MyInterface" should result in the
376// creation of the synthetic class:
377// public class SyntheticCapture implements MyInterface {
378// private int a;
379// private float b;
380// private Other c;
381// public SyntheticCapture(int a, float b, Other c) {
382// this.a = a; this.b = b; this.c = c;
383// }
384// public void myInterfaceMethod(int d) {
385// f(a, b, c, d);
386// }
387// }
388// This method just creates the outline; the methods will be populated on
389// demand via java_bytecode_languaget::convert_lazy_method.
390
391// Check that we understand the lambda method handle; if we don't then
392// we will not create a synthetic class at all, and the corresponding
393// invoke instruction will return null when eventually converted by
394// java_bytecode_convert_method.
398 symbol_table_baset &symbol_table,
399 synthetic_methods_mapt &synthetic_methods,
400 message_handlert &message_handler)
401{
402 const messaget log{message_handler};
403
404 for(const auto &instruction : instructions)
405 {
406 if(strcmp(bytecode_info[instruction.bytecode].mnemonic, "invokedynamic"))
407 continue;
408 const auto &dynamic_method_type =
409 to_java_method_type(instruction.args.at(0).type());
412 if(!lambda_handle)
413 {
414 log.debug() << "ignoring invokedynamic at " << method_identifier
415 << " address " << instruction.address
416 << " with unknown handle type" << messaget::eom;
417 continue;
418 }
420 to_java_reference_type(dynamic_method_type.return_type()).subtype());
422 symbol_table,
425 instruction.address,
426 log);
428 continue;
429 log.debug() << "identified invokedynamic at " << method_identifier
430 << " address " << instruction.address << " for lambda: "
431 << lambda_handle->get_lambda_method_identifier()
432 << messaget::eom;
435 symbol_table.add(constructor_symbol(
436 synthetic_methods, synthetic_class_name, dynamic_method_type));
437 symbol_table.add(implemented_method_symbol(
438 synthetic_methods, *unimplemented_method, synthetic_class_name));
439 symbol_table.add(synthetic_class_symbol(
444 }
445}
446
447#if defined(__GNUC__) && __GNUC__ >= 14
448[[gnu::no_dangling]]
449#endif
450static const symbolt &
452 const irep_idt &identifier,
453 const irep_idt &base_name,
454 const irep_idt &pretty_name,
455 const typet &type,
457 symbol_table_baset &symbol_table,
459{
460 const auto *existing_symbol = symbol_table.lookup(identifier);
462 return *existing_symbol;
463
465 identifier,
466 base_name,
467 pretty_name,
468 type,
470 symbol_table,
471 log);
472 return symbol_table.lookup_ref(identifier);
473}
474
476 const irep_idt &function_id,
477 symbol_table_baset &symbol_table,
478 message_handlert &message_handler)
479{
480 code_blockt result;
481 namespacet ns(symbol_table);
482
483 const symbolt &function_symbol = ns.lookup(function_id);
484 const auto &parameters = to_code_type(function_symbol.type).parameters();
485
488
490 parameters.at(0).get_identifier(), parameters.at(0).type());
492
493 // Call super-constructor (always java.lang.Object):
494 const irep_idt jlo("java::java.lang.Object");
495 const irep_idt jlo_constructor(id2string(jlo) + ".<init>:()V");
498 jlo_this_param.set_this();
499
504 "<init>",
507 jlo,
508 symbol_table,
509 message_handler);
511 jlo_constructor_symbol.symbol_expr(),
512 code_function_callt::argumentst{typecast_exprt(this_param, jlo_reference)});
514
515 // Store captured parameters:
516 auto field_iterator = std::next(class_type.components().begin());
517 for(const auto &parameter : parameters)
518 {
519 // Give the parameter its symbol:
521 param_symbol.name = parameter.get_identifier();
522 param_symbol.base_name = parameter.get_base_name();
523 param_symbol.mode = ID_java;
524 param_symbol.type = parameter.type();
525 symbol_table.add(param_symbol);
526
527 if(parameter.get_this())
528 continue;
529
531 member_exprt(deref_this, field_iterator->get_name(), parameter.type()),
532 symbol_exprt(parameter.get_identifier(), parameter.type()));
533 result.add(assign_field);
534
536 }
537
538 return std::move(result);
539}
540
542 const irep_idt &function_id,
543 const irep_idt &basename,
544 const typet &type,
545 symbol_table_baset &symbol_table,
546 code_blockt &method)
547{
548 irep_idt new_var_name = id2string(function_id) + "::" + id2string(basename);
553 new_instance_var_symbol.type = type;
554 bool add_failed = symbol_table.add(new_instance_var_symbol);
558
559 return new_instance_var;
560}
561
573 const irep_idt &function_id,
575 symbol_table_baset &symbol_table,
576 code_blockt &result)
577{
578 // We must instantiate the object, then call the requested constructor
580 INVARIANT(
581 method_type.get_bool(ID_constructor),
582 "REF_NewInvokeSpecial lambda must refer to a constructor");
583 const auto &created_type = method_type.parameters().at(0).type();
586 .get_identifier();
587
588 // Call static init if it exists:
590 if(const auto *static_init_symbol = symbol_table.lookup(static_init_name))
591 {
592 result.add(code_function_callt{static_init_symbol->symbol_expr(), {}});
593 }
594
595 // Make a local to hold the new instance:
597 function_id,
598 "newinvokespecial_instance",
600 symbol_table,
601 result);
602
603 // Instantiate the object:
606
607 return new_instance_var;
608}
609
612static std::optional<irep_idt>
614{
615 const irep_idt &boxed_type_id =
616 to_struct_tag_type(maybe_boxed_type.base_type()).get_identifier();
619 return boxed_type_info ? boxed_type_info->unboxing_function_name
620 : std::optional<irep_idt>{};
621}
622
628 const symbol_table_baset &symbol_table)
629{
631 if(!method_type.has_this())
632 return function_symbol.symbol_expr();
635 to_pointer_type(method_type.get_this()->type()).base_type())
636 .get_identifier();
637 const auto &this_symbol = symbol_table.lookup_ref(declared_on_class_id);
638 if(to_java_class_type(this_symbol.type).get_final())
639 return function_symbol.symbol_expr();
640
641 // Neither final nor static; make a class_method_descriptor_exprt that will
642 // trigger remove_virtual_functions to produce a virtual dispatch table:
643
644 const std::string &function_name = id2string(function_symbol.name);
645 const auto method_name_start_idx = function_name.rfind('.');
646 const irep_idt mangled_method_name =
647 function_name.substr(method_name_start_idx + 1);
648
650 mangled_method_name,
652 function_symbol.base_name};
653}
654
685 exprt expr,
686 const typet &required_type,
688 symbol_table_baset &symbol_table,
689 const irep_idt &function_id,
690 const std::string &role)
691{
692 const typet &original_type = expr.type();
695
697 {
698 return expr;
699 }
700
701 // One is a pointer, the other a primitive -- box or unbox as necessary, and
702 // check the types are consistent:
703
706 INVARIANT(
707 primitive_type_info != nullptr,
708 "A Java non-pointer type involved in a type disagreement should"
709 " be a primitive");
710
712 role + (original_is_pointer ? "_unboxed" : "_boxed");
713
715 function_id, fresh_local_name, required_type, symbol_table, code_block);
716
720 to_pointer_type(original_type)) // Use static type if known
721 .value_or(primitive_type_info->unboxing_function_name)
722 : primitive_type_info->boxed_type_factory_method;
723
725 symbol_table.lookup_ref(transform_function_id);
726
728 to_code_type(transform_function_symbol.type).parameters()[0].type();
729 const exprt cast_expr =
731
735 {expr}});
736
737 return std::move(fresh_local);
738}
739
744 exprt expr,
745 const typet &required_type,
747 symbol_table_baset &symbol_table,
748 const irep_idt &function_id,
749 const std::string &role)
750{
753 expr, required_type, code_block, symbol_table, function_id, role),
755}
756
774 const irep_idt &function_id,
775 symbol_table_baset &symbol_table,
776 message_handlert &message_handler)
777{
778 // Call the bound method with the capture parameters, then the actual
779 // parameters. Note one of the capture params might be the `this` parameter
780 // of a virtual call -- that depends on whether the callee is a static or an
781 // instance method.
782
783 code_blockt result;
784 namespacet ns(symbol_table);
785
786 const symbolt &function_symbol = ns.lookup(function_id);
787 const auto &function_type = to_code_type(function_symbol.type);
788 const auto &parameters = function_type.parameters();
789
792
794 parameters.at(0).get_identifier(), parameters.at(0).type());
796
798 for(const auto &field : class_type.components())
799 {
800 if(field.get_name() == "@java.lang.Object")
801 continue;
802 lambda_method_args.push_back(
803 member_exprt(deref_this, field.get_name(), field.type()));
804 }
805
806 for(const auto &parameter : parameters)
807 {
808 // Give the parameter its symbol:
810 param_symbol.name = parameter.get_identifier();
811 param_symbol.base_name = parameter.get_base_name();
812 param_symbol.mode = ID_java;
813 param_symbol.type = parameter.type();
814 symbol_table.add(param_symbol);
815
816 if(parameter.get_this())
817 continue;
818
819 lambda_method_args.push_back(param_symbol.symbol_expr());
820 }
821
822 const auto &lambda_method_handle =
825
826 const auto &lambda_method_symbol =
827 ns.lookup(lambda_method_handle.get_lambda_method_identifier());
828 const auto handle_type = lambda_method_handle.get_handle_kind();
829 const auto is_constructor_lambda =
830 handle_type ==
832 const auto use_virtual_dispatch =
833 handle_type ==
835
837 {
839 function_id, lambda_method_symbol, symbol_table, result);
840
841 // Prepend the newly created object to the lambda arg list:
843 }
844
845 const auto &lambda_method_descriptor =
846 lambda_method_handle.get_lambda_method_descriptor();
850 else
851 callee = lambda_method_symbol.symbol_expr();
852
853 // Adjust boxing if required:
855 const auto &callee_parameters = callee_type.parameters();
856 const auto &callee_return_type = callee_type.return_type();
857 INVARIANT(
858 callee_parameters.size() == lambda_method_args.size(),
859 "should have args for every parameter");
860 for(unsigned i = 0; i < callee_parameters.size(); ++i)
861 {
863 std::move(lambda_method_args[i]),
864 callee_parameters[i].type(),
865 result,
866 symbol_table,
867 function_id,
868 "param" + std::to_string(i));
869 }
870
871 if(function_type.return_type() != empty_typet() && !is_constructor_lambda)
872 {
874 function_id, "return_value", callee_return_type, symbol_table, result);
878 function_type.return_type(),
879 result,
880 symbol_table,
881 function_id,
882 "retval");
884 }
885 else
886 {
888 }
889
891 {
892 // Return the newly-created object.
894 lambda_method_args.at(0), function_type.return_type())});
895 }
896
897 return std::move(result);
898}
struct bytecode_infot const bytecode_info[]
ait supplies three of the four components needed: an abstract interpreter (in this case handling func...
Definition ai.h:566
ait()
Definition ai.h:569
Internally generated symbol table entryThis is a symbol generated as part of translation to or modifi...
Definition symbol.h:153
An expression describing a method on a class.
Definition std_expr.h:3548
Class type.
Definition std_types.h:324
A codet representing sequential composition of program statements.
Definition std_code.h:130
void add(const codet &code)
Definition std_code.h:168
A goto_instruction_codet representing the declaration of a local variable.
A codet representing an assignment in the program.
Definition std_code.h:24
goto_instruction_codet representation of a function call statement.
exprt::operandst argumentst
goto_instruction_codet representation of a "return from a function" statement.
Definition std_types.h:599
Base type of functions.
Definition std_types.h:582
std::vector< parametert > parameterst
Definition std_types.h:585
void set_is_constructor()
Definition std_types.h:733
const parameterst & parameters() const
Definition std_types.h:698
const typet & return_type() const
Definition std_types.h:688
Data structure for representing an arbitrary statement in a program.
Definition std_code_base.h:29
Operator to dereference a pointer.
Definition pointer_expr.h:834
dstringt has one field, an unsigned integer no which is an index into a static table of strings.
Definition dstring.h:38
The empty type.
Definition std_types.h:50
Base class for all expressions.
Definition expr.h:57
typet & type()
Return the type of the expression.
Definition expr.h:85
Definition java_types.h:199
Represents a lambda call to a method.
Definition java_types.h:481
Definition java_types.h:240
Definition java_types.h:196
std::vector< java_lambda_method_handlet > java_lambda_method_handlest
Definition java_types.h:514
@ LAMBDA_VIRTUAL_METHOD_HANDLE
Virtual call to the given interface or method.
@ UNKNOWN_HANDLE
Can't be called.
@ LAMBDA_CONSTRUCTOR_HANDLE
Instantiate the needed type then call a constructor.
Definition java_types.h:100
Extract member of struct or union.
Definition std_expr.h:2866
Definition message.h:27
Class that provides messages with a built-in verbosity 'level'.
Definition message.h:154
static eomt eom
Definition message.h:289
A namespacet is essentially one or two symbol tables bound together, to allow for symbol lookups in t...
Definition namespace.h:91
bool lookup(const irep_idt &name, const symbolt *&symbol) const override
See documentation for namespace_baset::lookup().
Definition namespace.cpp:134
const std::string message
no_unique_unimplemented_method_exceptiont(const std::string &s)
Symbol table entry of function parameterThis is a symbol generated as part of type checking.
Definition symbol.h:179
The pointer type These are both 'bitvector_typet' (they have a width) and 'type_with_subtypet' (they ...
Definition pointer_expr.h:24
An expression containing a side effect.
Definition std_code.h:1450
A struct tag type, i.e., struct_typet with an identifier.
Definition std_types.h:492
Expression to hold a symbol (variable)
Definition std_expr.h:132
The symbol table base class interface.
const symbolt * lookup(const irep_idt &name) const
Find a symbol in the symbol table for read-only access.
bool add(const symbolt &symbol)
Add a new symbol to the symbol table.
const symbolt & lookup_ref(const irep_idt &name) const
Find a symbol in the symbol table for read-only access.
Symbol table entry.
Definition symbol.h:28
Symbol table entry describing a data typeThis is a symbol generated as part of type checking.
Definition symbol.h:139
static exprt conditional_cast(const exprt &expr, const typet &type)
Definition std_expr.h:2003
The type of an expression, extends irept.
Definition type.h:29
const std::string & id2string(const irep_idt &d)
Definition irep.h:44
void create_method_stub_symbol(const irep_idt &identifier, const irep_idt &base_name, const irep_idt &pretty_name, const typet &type, const irep_idt &declaring_class, symbol_table_baset &symbol_table, message_handlert &message_handler)
JAVA Bytecode Language Conversion.
irep_idt clinit_wrapper_name(const irep_idt &class_name)
Get the Java static initializer wrapper name for a given class (the wrapper checks if static initiali...
reference_typet java_reference_type(const typet &subtype)
Definition java_types.cpp:88
const java_method_typet & to_java_method_type(const typet &type)
Definition java_types.h:183
const java_reference_typet & to_java_reference_type(const typet &type)
Definition java_types.h:629
const java_class_typet & to_java_class_type(const typet &type)
Definition java_types.h:581
const java_primitive_type_infot * get_java_primitive_type_info(const typet &maybe_primitive_type)
If primitive_type is a Java primitive type, return information about it, otherwise return null.
Definition java_utils.cpp:63
const java_boxed_type_infot * get_boxed_type_info_by_name(const irep_idt &type_name)
If type_name is a Java boxed type tag, return information about it, otherwise return null.
Definition java_utils.cpp:36
std::optional< irep_idt > declaring_class(const symbolt &symbol)
Gets the identifier of the class which declared a given symbol.
Definition java_utils.cpp:568
void set_declaring_class(symbolt &symbol, const irep_idt &declaring_class)
Sets the identifier of the class which declared a given symbol to declaring_class.
Definition java_utils.cpp:574
irep_idt strip_java_namespace_prefix(const irep_idt &to_strip)
Strip java:: prefix from given identifier.
Definition java_utils.cpp:407
static symbolt implemented_method_symbol(synthetic_methods_mapt &synthetic_methods, const java_class_typet::methodt &method_to_implement, const irep_idt &synthetic_class_name)
symbolt synthetic_class_symbol(const irep_idt &synthetic_class_name, const java_class_typet::java_lambda_method_handlet &lambda_method_handle, const struct_tag_typet &functional_interface_tag, const java_method_typet &dynamic_method_type)
exprt make_function_expr(const symbolt &function_symbol, const symbol_table_baset &symbol_table)
Produce a class_method_descriptor_exprt or symbol_exprt for function_symbol depending on whether virt...
void create_invokedynamic_synthetic_classes(const irep_idt &method_identifier, const java_bytecode_parse_treet::methodt::instructionst &instructions, symbol_table_baset &symbol_table, synthetic_methods_mapt &synthetic_methods, message_handlert &message_handler)
static std::optional< java_class_typet::java_lambda_method_handlet > lambda_method_handle(const symbol_table_baset &symbol_table, const irep_idt &method_identifier, const java_method_typet &dynamic_method_type)
exprt box_or_unbox_type_if_necessary(exprt expr, const typet &required_type, code_blockt &code_block, symbol_table_baset &symbol_table, const irep_idt &function_id, const std::string &role)
If expr needs (un)boxing to satisfy required_type, add the required symbols to symbol_table and code ...
std::map< const java_class_typet::methodt *, bool, compare_base_name_and_descriptort > methods_by_name_and_descriptort
Map from method, indexed by name and descriptor but not defining class, onto defined-ness (i....
codet invokedynamic_synthetic_constructor(const irep_idt &function_id, symbol_table_baset &symbol_table, message_handlert &message_handler)
Create invokedynamic synthetic constructor.
static symbol_exprt instantiate_new_object(const irep_idt &function_id, const symbolt &lambda_method_symbol, symbol_table_baset &symbol_table, code_blockt &result)
Instantiates an object suitable for calling a given constructor (but does not actually call it).
static const java_class_typet::methodt * try_get_unique_unimplemented_method(const symbol_table_baset &symbol_table, const struct_tag_typet &functional_interface_tag, const irep_idt &method_identifier, const int instruction_address, const messaget &log)
static std::optional< irep_idt > get_unboxing_method(const pointer_typet &maybe_boxed_type)
If maybe_boxed_type is a boxed primitive return its unboxing method; otherwise return empty.
static symbol_exprt create_and_declare_local(const irep_idt &function_id, const irep_idt &basename, const typet &type, symbol_table_baset &symbol_table, code_blockt &method)
static std::string escape_symbol_special_chars(std::string input)
static const symbolt & get_or_create_method_symbol(const irep_idt &identifier, const irep_idt &base_name, const irep_idt &pretty_name, const typet &type, const irep_idt &declaring_class, symbol_table_baset &symbol_table, message_handlert &log)
exprt adjust_type_if_necessary(exprt expr, const typet &required_type, code_blockt &code_block, symbol_table_baset &symbol_table, const irep_idt &function_id, const std::string &role)
Box or unbox expr as per box_or_unbox_type_if_necessary, then cast the result to required_type.
codet invokedynamic_synthetic_method(const irep_idt &function_id, symbol_table_baset &symbol_table, message_handlert &message_handler)
Create the body for the synthetic method implementing an invokedynamic method.
static std::optional< java_class_typet::java_lambda_method_handlet > get_lambda_method_handle(const symbol_table_baset &symbol_table, const java_class_typet::java_lambda_method_handlest &lambda_method_handles, const size_t index)
Retrieves the symbol of the lambda method associated with the given lambda method handle (bootstrap m...
irep_idt lambda_synthetic_class_name(const irep_idt &method_identifier, std::size_t instruction_address)
static symbolt constructor_symbol(synthetic_methods_mapt &synthetic_methods, const irep_idt &synthetic_class_name, java_method_typet constructor_type)
static const methods_by_name_and_descriptort get_interface_methods(const irep_idt &interface_id, const namespacet &ns)
Find all methods defined by this method and its parent types, returned as a map from const java_class...
Java lambda code synthesis.
double log(double x)
Definition math.c:2416
bool can_cast_type< pointer_typet >(const typet &type)
Check whether a reference to a typet is a pointer_typet.
Definition pointer_expr.h:80
const reference_typet & to_reference_type(const typet &type)
Cast a typet to a reference_typet.
Definition pointer_expr.h:162
const pointer_typet & to_pointer_type(const typet &type)
Cast a typet to a pointer_typet.
Definition pointer_expr.h:93
#define INVARIANT(CONDITION, REASON)
This macro uses the wrapper function 'invariant_violated_string'.
Definition invariant.h:423
#define POSTCONDITION(CONDITION)
Definition invariant.h:479
const code_typet & to_code_type(const typet &type)
Cast a typet to a code_typet.
Definition std_types.h:787
const struct_tag_typet & to_struct_tag_type(const typet &type)
Cast a typet to a struct_tag_typet.
Definition std_types.h:517
const class_typet & to_class_type(const typet &type)
Cast a typet to a class_typet.
Definition std_types.h:380
int strcmp(const char *s1, const char *s2)
Definition string.c:363
int operator()(const java_class_typet::methodt *a, const java_class_typet::methodt *b) const
Return type for get_boxed_type_info_by_name.
Definition java_utils.h:53
std::vector< instructiont > instructionst
Author: Diffblue Ltd.
Synthetic methods are particular methods internally generated by the Java frontend,...
std::unordered_map< irep_idt, synthetic_method_typet > synthetic_methods_mapt
Maps method names on to a synthetic method kind.
@ INVOKEDYNAMIC_METHOD
A generated method for a class capturing the parameters of an invokedynamic instruction.
@ INVOKEDYNAMIC_CAPTURE_CONSTRUCTOR
A generated constructor for a class capturing the parameters of an invokedynamic instruction.

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