author | jwilhelm |
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/* |
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |
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#define SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |
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#include "classfile/classFileStream.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "oops/typeArrayOop.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "utilities/accessFlags.hpp" |
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#include "classfile/symbolTable.hpp" |
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class FieldAllocationCount; |
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// Parser for for .class files |
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// |
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// The bytes describing the class file structure is read from a Stream object |
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class ClassFileParser VALUE_OBJ_CLASS_SPEC { |
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private: |
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bool _need_verify; |
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bool _relax_verify; |
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u2 _major_version; |
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u2 _minor_version; |
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Symbol* _class_name; |
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KlassHandle _host_klass; |
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GrowableArray<Handle>* _cp_patches; // overrides for CP entries |
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// precomputed flags |
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bool _has_finalizer; |
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bool _has_empty_finalizer; |
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bool _has_vanilla_constructor; |
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int _max_bootstrap_specifier_index; // detects BSS values |
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// class attributes parsed before the instance klass is created: |
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bool _synthetic_flag; |
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Symbol* _sourcefile; |
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Symbol* _generic_signature; |
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char* _sde_buffer; |
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int _sde_length; |
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Array<u2>* _inner_classes; |
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AnnotationArray* _annotations; |
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AnnotationArray* _type_annotations; |
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void set_class_synthetic_flag(bool x) { _synthetic_flag = x; } |
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void set_class_sourcefile(Symbol* x) { _sourcefile = x; } |
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void set_class_generic_signature(Symbol* x) { _generic_signature = x; } |
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void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; } |
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void set_class_inner_classes(Array<u2>* x) { _inner_classes = x; } |
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void set_class_annotations(AnnotationArray* x) { _annotations = x; } |
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void set_class_type_annotations(AnnotationArray* x) { _type_annotations = x; } |
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void init_parsed_class_attributes() { |
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_synthetic_flag = false; |
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_sourcefile = NULL; |
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_generic_signature = NULL; |
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_sde_buffer = NULL; |
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_sde_length = 0; |
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_annotations = _type_annotations = NULL; |
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// initialize the other flags too: |
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_has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; |
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_max_bootstrap_specifier_index = -1; |
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} |
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void apply_parsed_class_attributes(instanceKlassHandle k); // update k |
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class AnnotationCollector { |
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public: |
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enum Location { _in_field, _in_method, _in_class }; |
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enum ID { |
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_unknown = 0, |
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_method_ForceInline, |
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_method_DontInline, |
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_method_LambdaForm_Compiled, |
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_method_LambdaForm_Hidden, |
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_sun_misc_Contended, |
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_annotation_LIMIT |
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}; |
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const Location _location; |
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int _annotations_present; |
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u2 _contended_group; |
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AnnotationCollector(Location location) |
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: _location(location), _annotations_present(0) |
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{ |
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assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, ""); |
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} |
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// If this annotation name has an ID, report it (or _none). |
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ID annotation_index(ClassLoaderData* loader_data, Symbol* name); |
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// Set the annotation name: |
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void set_annotation(ID id) { |
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assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob"); |
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_annotations_present |= nth_bit((int)id); |
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} |
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// Report if the annotation is present. |
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bool has_any_annotations() { return _annotations_present != 0; } |
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bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; } |
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void set_contended_group(u2 group) { _contended_group = group; } |
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u2 contended_group() { return _contended_group; } |
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void set_contended(bool contended) { set_annotation(_sun_misc_Contended); } |
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bool is_contended() { return has_annotation(_sun_misc_Contended); } |
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}; |
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class FieldAnnotationCollector: public AnnotationCollector { |
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public: |
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FieldAnnotationCollector() : AnnotationCollector(_in_field) { } |
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void apply_to(FieldInfo* f); |
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}; |
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class MethodAnnotationCollector: public AnnotationCollector { |
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public: |
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MethodAnnotationCollector() : AnnotationCollector(_in_method) { } |
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void apply_to(methodHandle m); |
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}; |
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class ClassAnnotationCollector: public AnnotationCollector { |
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public: |
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ClassAnnotationCollector() : AnnotationCollector(_in_class) { } |
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void apply_to(instanceKlassHandle k); |
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}; |
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enum { fixed_buffer_size = 128 }; |
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u_char linenumbertable_buffer[fixed_buffer_size]; |
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ClassFileStream* _stream; // Actual input stream |
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enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names |
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// Accessors |
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ClassFileStream* stream() { return _stream; } |
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void set_stream(ClassFileStream* st) { _stream = st; } |
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// Constant pool parsing |
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void parse_constant_pool_entries(ClassLoaderData* loader_data, |
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constantPoolHandle cp, int length, TRAPS); |
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constantPoolHandle parse_constant_pool(ClassLoaderData* loader_data, TRAPS); |
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// Interface parsing |
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Array<Klass*>* parse_interfaces(constantPoolHandle cp, |
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int length, |
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ClassLoaderData* loader_data, |
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Handle protection_domain, |
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Symbol* class_name, |
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bool* has_default_methods, |
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TRAPS); |
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void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS); |
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// Field parsing |
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void parse_field_attributes(ClassLoaderData* loader_data, |
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constantPoolHandle cp, u2 attributes_count, |
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bool is_static, u2 signature_index, |
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u2* constantvalue_index_addr, |
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bool* is_synthetic_addr, |
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u2* generic_signature_index_addr, |
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AnnotationArray** field_annotations, |
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AnnotationArray** field_type_annotations, |
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FieldAnnotationCollector* parsed_annotations, |
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TRAPS); |
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Array<u2>* parse_fields(ClassLoaderData* loader_data, |
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Symbol* class_name, |
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constantPoolHandle cp, bool is_interface, |
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FieldAllocationCount *fac, |
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Array<AnnotationArray*>** fields_annotations, |
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Array<AnnotationArray*>** fields_type_annotations, |
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u2* java_fields_count_ptr, TRAPS); |
1 | 188 |
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void print_field_layout(Symbol* name, |
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Array<u2>* fields, |
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constantPoolHandle cp, |
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int instance_size, |
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int instance_fields_start, |
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int instance_fields_end, |
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int static_fields_end); |
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|
1 | 197 |
// Method parsing |
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methodHandle parse_method(ClassLoaderData* loader_data, |
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constantPoolHandle cp, |
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bool is_interface, |
1 | 201 |
AccessFlags* promoted_flags, |
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AnnotationArray** method_annotations, |
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AnnotationArray** method_parameter_annotations, |
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AnnotationArray** method_default_annotations, |
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AnnotationArray** method_type_annotations, |
1 | 206 |
TRAPS); |
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Array<Method*>* parse_methods(ClassLoaderData* loader_data, |
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constantPoolHandle cp, |
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bool is_interface, |
1 | 210 |
AccessFlags* promoted_flags, |
211 |
bool* has_final_method, |
|
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Array<AnnotationArray*>** methods_annotations, |
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Array<AnnotationArray*>** methods_parameter_annotations, |
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Array<AnnotationArray*>** methods_default_annotations, |
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Array<AnnotationArray*>** methods_type_annotations, |
14385 | 216 |
bool* has_default_method, |
1 | 217 |
TRAPS); |
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Array<int>* sort_methods(ClassLoaderData* loader_data, |
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Array<Method*>* methods, |
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Array<AnnotationArray*>* methods_annotations, |
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221 |
Array<AnnotationArray*>* methods_parameter_annotations, |
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222 |
Array<AnnotationArray*>* methods_default_annotations, |
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Array<AnnotationArray*>* methods_type_annotations, |
1 | 224 |
TRAPS); |
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u2* parse_exception_table(ClassLoaderData* loader_data, |
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u4 code_length, u4 exception_table_length, |
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constantPoolHandle cp, TRAPS); |
1 | 228 |
void parse_linenumber_table( |
229 |
u4 code_attribute_length, u4 code_length, |
|
230 |
CompressedLineNumberWriteStream** write_stream, TRAPS); |
|
231 |
u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, |
|
232 |
constantPoolHandle cp, u2* localvariable_table_length, |
|
233 |
bool isLVTT, TRAPS); |
|
234 |
u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, |
|
235 |
constantPoolHandle cp, TRAPS); |
|
236 |
void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, |
|
237 |
u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS); |
|
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Array<u1>* parse_stackmap_table(ClassLoaderData* loader_data, u4 code_attribute_length, TRAPS); |
1 | 239 |
|
240 |
// Classfile attribute parsing |
|
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void parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS); |
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void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, |
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int length, TRAPS); |
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244 |
u2 parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
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u1* inner_classes_attribute_start, |
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bool parsed_enclosingmethod_attribute, |
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u2 enclosing_method_class_index, |
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u2 enclosing_method_method_index, |
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constantPoolHandle cp, |
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TRAPS); |
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void parse_classfile_attributes(ClassLoaderData* loader_data, |
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constantPoolHandle cp, |
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253 |
ClassAnnotationCollector* parsed_annotations, |
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254 |
TRAPS); |
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255 |
void parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS); |
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void parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS); |
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257 |
void parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, constantPoolHandle cp, u4 attribute_length, TRAPS); |
1 | 258 |
|
259 |
// Annotations handling |
|
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AnnotationArray* assemble_annotations(ClassLoaderData* loader_data, |
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261 |
u1* runtime_visible_annotations, |
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262 |
int runtime_visible_annotations_length, |
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263 |
u1* runtime_invisible_annotations, |
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264 |
int runtime_invisible_annotations_length, TRAPS); |
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int skip_annotation(u1* buffer, int limit, int index); |
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int skip_annotation_value(u1* buffer, int limit, int index); |
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void parse_annotations(ClassLoaderData* loader_data, |
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u1* buffer, int limit, constantPoolHandle cp, |
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/* Results (currently, only one result is supported): */ |
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AnnotationCollector* result, |
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271 |
TRAPS); |
1 | 272 |
|
273 |
// Final setup |
|
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274 |
unsigned int compute_oop_map_count(instanceKlassHandle super, |
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275 |
unsigned int nonstatic_oop_count, |
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276 |
int first_nonstatic_oop_offset); |
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|
277 |
void fill_oop_maps(instanceKlassHandle k, |
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|
278 |
unsigned int nonstatic_oop_map_count, |
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|
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int* nonstatic_oop_offsets, |
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|
280 |
unsigned int* nonstatic_oop_counts); |
1 | 281 |
void set_precomputed_flags(instanceKlassHandle k); |
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|
282 |
Array<Klass*>* compute_transitive_interfaces(ClassLoaderData* loader_data, |
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|
283 |
instanceKlassHandle super, |
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|
284 |
Array<Klass*>* local_ifs, TRAPS); |
1 | 285 |
|
286 |
// Format checker methods |
|
287 |
void classfile_parse_error(const char* msg, TRAPS); |
|
288 |
void classfile_parse_error(const char* msg, int index, TRAPS); |
|
289 |
void classfile_parse_error(const char* msg, const char *name, TRAPS); |
|
290 |
void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); |
|
291 |
inline void guarantee_property(bool b, const char* msg, TRAPS) { |
|
292 |
if (!b) { classfile_parse_error(msg, CHECK); } |
|
293 |
} |
|
294 |
||
295 |
inline void assert_property(bool b, const char* msg, TRAPS) { |
|
296 |
#ifdef ASSERT |
|
297 |
if (!b) { fatal(msg); } |
|
298 |
#endif |
|
299 |
} |
|
300 |
||
301 |
inline void check_property(bool property, const char* msg, int index, TRAPS) { |
|
302 |
if (_need_verify) { |
|
303 |
guarantee_property(property, msg, index, CHECK); |
|
304 |
} else { |
|
305 |
assert_property(property, msg, CHECK); |
|
306 |
} |
|
307 |
} |
|
308 |
||
309 |
inline void check_property(bool property, const char* msg, TRAPS) { |
|
310 |
if (_need_verify) { |
|
311 |
guarantee_property(property, msg, CHECK); |
|
312 |
} else { |
|
313 |
assert_property(property, msg, CHECK); |
|
314 |
} |
|
315 |
} |
|
316 |
||
317 |
inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { |
|
318 |
if (!b) { classfile_parse_error(msg, index, CHECK); } |
|
319 |
} |
|
320 |
inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { |
|
321 |
if (!b) { classfile_parse_error(msg, name, CHECK); } |
|
322 |
} |
|
323 |
inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { |
|
324 |
if (!b) { classfile_parse_error(msg, index, name, CHECK); } |
|
325 |
} |
|
326 |
||
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327 |
void throwIllegalSignature( |
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328 |
const char* type, Symbol* name, Symbol* sig, TRAPS); |
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329 |
|
1 | 330 |
bool is_supported_version(u2 major, u2 minor); |
331 |
bool has_illegal_visibility(jint flags); |
|
332 |
||
333 |
void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS); |
|
334 |
void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); |
|
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|
335 |
void verify_legal_class_name(Symbol* name, TRAPS); |
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void verify_legal_field_name(Symbol* name, TRAPS); |
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|
337 |
void verify_legal_method_name(Symbol* name, TRAPS); |
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|
338 |
void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS); |
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|
339 |
int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS); |
1 | 340 |
void verify_legal_class_modifiers(jint flags, TRAPS); |
341 |
void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); |
|
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342 |
void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS); |
1 | 343 |
bool verify_unqualified_name(char* name, unsigned int length, int type); |
344 |
char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); |
|
345 |
char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); |
|
346 |
||
2534 | 347 |
bool is_anonymous() { |
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|
348 |
assert(EnableInvokeDynamic || _host_klass.is_null(), ""); |
2534 | 349 |
return _host_klass.not_null(); |
350 |
} |
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|
351 |
bool has_cp_patch_at(int index) { |
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assert(EnableInvokeDynamic, ""); |
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|
353 |
assert(index >= 0, "oob"); |
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|
354 |
return (_cp_patches != NULL |
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|
355 |
&& index < _cp_patches->length() |
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&& _cp_patches->adr_at(index)->not_null()); |
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} |
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Handle cp_patch_at(int index) { |
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assert(has_cp_patch_at(index), "oob"); |
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return _cp_patches->at(index); |
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} |
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Handle clear_cp_patch_at(int index) { |
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Handle patch = cp_patch_at(index); |
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_cp_patches->at_put(index, Handle()); |
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assert(!has_cp_patch_at(index), ""); |
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return patch; |
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} |
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void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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|
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// Wrapper for constantTag.is_klass_[or_]reference. |
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// In older versions of the VM, Klass*s cannot sneak into early phases of |
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// constant pool construction, but in later versions they can. |
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// %%% Let's phase out the old is_klass_reference. |
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bool is_klass_reference(constantPoolHandle cp, int index) { |
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return (EnableInvokeDynamic |
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? cp->tag_at(index).is_klass_or_reference() |
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: cp->tag_at(index).is_klass_reference()); |
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} |
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public: |
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// Constructor |
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ClassFileParser(ClassFileStream* st) { set_stream(st); } |
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||
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// Parse .class file and return new Klass*. The Klass* is not hooked up |
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// to the system dictionary or any other structures, so a .class file can |
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// be loaded several times if desired. |
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// The system dictionary hookup is done by the caller. |
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// |
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// "parsed_name" is updated by this method, and is the name found |
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// while parsing the stream. |
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instanceKlassHandle parseClassFile(Symbol* name, |
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ClassLoaderData* loader_data, |
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Handle protection_domain, |
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TempNewSymbol& parsed_name, |
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bool verify, |
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TRAPS) { |
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KlassHandle no_host_klass; |
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return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD); |
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} |
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instanceKlassHandle parseClassFile(Symbol* name, |
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ClassLoaderData* loader_data, |
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Handle protection_domain, |
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KlassHandle host_klass, |
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GrowableArray<Handle>* cp_patches, |
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TempNewSymbol& parsed_name, |
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bool verify, |
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TRAPS); |
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||
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// Verifier checks |
|
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static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); |
|
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static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); |
|
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static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); |
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static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); |
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}; |
|
7397 | 415 |
|
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#endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |