548 }
549 #endif
550 assert(valid_vtable_index() || valid_itable_index(), "method must be linked before we ask this question");
551 return vtable_index() == nonvirtual_vtable_index;
552 }
553
554 bool Method::can_be_statically_bound() const {
555 return can_be_statically_bound(method_holder()->access_flags());
556 }
557
558 bool Method::is_accessor() const {
559 if (code_size() != 5) return false;
560 if (size_of_parameters() != 1) return false;
561 if (java_code_at(0) != Bytecodes::_aload_0 ) return false;
562 if (java_code_at(1) != Bytecodes::_getfield) return false;
563 if (java_code_at(4) != Bytecodes::_areturn &&
564 java_code_at(4) != Bytecodes::_ireturn ) return false;
565 return true;
566 }
567
568
569 bool Method::is_initializer() const {
570 return name() == vmSymbols::object_initializer_name() || is_static_initializer();
571 }
572
573 bool Method::has_valid_initializer_flags() const {
574 return (is_static() ||
575 method_holder()->major_version() < 51);
576 }
577
578 bool Method::is_static_initializer() const {
579 // For classfiles version 51 or greater, ensure that the clinit method is
580 // static. Non-static methods with the name "<clinit>" are not static
581 // initializers. (older classfiles exempted for backward compatibility)
582 return name() == vmSymbols::class_initializer_name() &&
583 has_valid_initializer_flags();
584 }
585
586
587 objArrayHandle Method::resolved_checked_exceptions_impl(Method* method, TRAPS) {
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548 }
549 #endif
550 assert(valid_vtable_index() || valid_itable_index(), "method must be linked before we ask this question");
551 return vtable_index() == nonvirtual_vtable_index;
552 }
553
554 bool Method::can_be_statically_bound() const {
555 return can_be_statically_bound(method_holder()->access_flags());
556 }
557
558 bool Method::is_accessor() const {
559 if (code_size() != 5) return false;
560 if (size_of_parameters() != 1) return false;
561 if (java_code_at(0) != Bytecodes::_aload_0 ) return false;
562 if (java_code_at(1) != Bytecodes::_getfield) return false;
563 if (java_code_at(4) != Bytecodes::_areturn &&
564 java_code_at(4) != Bytecodes::_ireturn ) return false;
565 return true;
566 }
567
568 bool Method::is_constant_getter() const {
569 int last_index = code_size() - 1;
570 // Check if the first 1-3 bytecodes are a constant push
571 // and the last bytecode is a return.
572 return (2 <= code_size() && code_size() <= 4 &&
573 Bytecodes::is_const(java_code_at(0)) &&
574 Bytecodes::length_for(java_code_at(0)) == last_index &&
575 Bytecodes::is_return(java_code_at(last_index)));
576 }
577
578 bool Method::is_initializer() const {
579 return name() == vmSymbols::object_initializer_name() || is_static_initializer();
580 }
581
582 bool Method::has_valid_initializer_flags() const {
583 return (is_static() ||
584 method_holder()->major_version() < 51);
585 }
586
587 bool Method::is_static_initializer() const {
588 // For classfiles version 51 or greater, ensure that the clinit method is
589 // static. Non-static methods with the name "<clinit>" are not static
590 // initializers. (older classfiles exempted for backward compatibility)
591 return name() == vmSymbols::class_initializer_name() &&
592 has_valid_initializer_flags();
593 }
594
595
596 objArrayHandle Method::resolved_checked_exceptions_impl(Method* method, TRAPS) {
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