571 }
572 #endif
573 assert(valid_vtable_index() || valid_itable_index(), "method must be linked before we ask this question");
574 return vtable_index() == nonvirtual_vtable_index;
575 }
576
577 bool Method::can_be_statically_bound() const {
578 return can_be_statically_bound(method_holder()->access_flags());
579 }
580
581 bool Method::is_accessor() const {
582 if (code_size() != 5) return false;
583 if (size_of_parameters() != 1) return false;
584 if (java_code_at(0) != Bytecodes::_aload_0 ) return false;
585 if (java_code_at(1) != Bytecodes::_getfield) return false;
586 if (java_code_at(4) != Bytecodes::_areturn &&
587 java_code_at(4) != Bytecodes::_ireturn ) return false;
588 return true;
589 }
590
591
592 bool Method::is_initializer() const {
593 return name() == vmSymbols::object_initializer_name() || is_static_initializer();
594 }
595
596 bool Method::has_valid_initializer_flags() const {
597 return (is_static() ||
598 method_holder()->major_version() < 51);
599 }
600
601 bool Method::is_static_initializer() const {
602 // For classfiles version 51 or greater, ensure that the clinit method is
603 // static. Non-static methods with the name "<clinit>" are not static
604 // initializers. (older classfiles exempted for backward compatibility)
605 return name() == vmSymbols::class_initializer_name() &&
606 has_valid_initializer_flags();
607 }
608
609
610 objArrayHandle Method::resolved_checked_exceptions_impl(Method* method, TRAPS) {
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571 }
572 #endif
573 assert(valid_vtable_index() || valid_itable_index(), "method must be linked before we ask this question");
574 return vtable_index() == nonvirtual_vtable_index;
575 }
576
577 bool Method::can_be_statically_bound() const {
578 return can_be_statically_bound(method_holder()->access_flags());
579 }
580
581 bool Method::is_accessor() const {
582 if (code_size() != 5) return false;
583 if (size_of_parameters() != 1) return false;
584 if (java_code_at(0) != Bytecodes::_aload_0 ) return false;
585 if (java_code_at(1) != Bytecodes::_getfield) return false;
586 if (java_code_at(4) != Bytecodes::_areturn &&
587 java_code_at(4) != Bytecodes::_ireturn ) return false;
588 return true;
589 }
590
591 bool Method::is_constant_getter() const {
592 int last_index = code_size() - 1;
593 // Check if the first 1-3 bytecodes are a constant push
594 // and the last bytecode is a return.
595 return (2 <= code_size() && code_size() <= 4 &&
596 Bytecodes::is_const(java_code_at(0)) &&
597 Bytecodes::length_for(java_code_at(0)) == last_index &&
598 Bytecodes::is_return(java_code_at(last_index)));
599 }
600
601 bool Method::is_initializer() const {
602 return name() == vmSymbols::object_initializer_name() || is_static_initializer();
603 }
604
605 bool Method::has_valid_initializer_flags() const {
606 return (is_static() ||
607 method_holder()->major_version() < 51);
608 }
609
610 bool Method::is_static_initializer() const {
611 // For classfiles version 51 or greater, ensure that the clinit method is
612 // static. Non-static methods with the name "<clinit>" are not static
613 // initializers. (older classfiles exempted for backward compatibility)
614 return name() == vmSymbols::class_initializer_name() &&
615 has_valid_initializer_flags();
616 }
617
618
619 objArrayHandle Method::resolved_checked_exceptions_impl(Method* method, TRAPS) {
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