--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/classfile/classFileParser.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,228 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Parser for for .class files
+//
+// The bytes describing the class file structure is read from a Stream object
+
+class ClassFileParser VALUE_OBJ_CLASS_SPEC {
+ private:
+  bool _need_verify;
+  bool _relax_verify;
+  u2   _major_version;
+  u2   _minor_version;
+  symbolHandle _class_name;
+
+  bool _has_finalizer;
+  bool _has_empty_finalizer;
+  bool _has_vanilla_constructor;
+
+  enum { fixed_buffer_size = 128 };
+  u_char linenumbertable_buffer[fixed_buffer_size];
+
+  ClassFileStream* _stream;              // Actual input stream
+
+  enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
+
+  // Accessors
+  ClassFileStream* stream()                        { return _stream; }
+  void set_stream(ClassFileStream* st)             { _stream = st; }
+
+  // Constant pool parsing
+  void parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS);
+
+  constantPoolHandle parse_constant_pool(TRAPS);
+
+  // Interface parsing
+  objArrayHandle parse_interfaces(constantPoolHandle cp,
+                                  int length,
+                                  Handle class_loader,
+                                  Handle protection_domain,
+                                  PerfTraceTime* vmtimer,
+                                  symbolHandle class_name,
+                                  TRAPS);
+
+  // Field parsing
+  void parse_field_attributes(constantPoolHandle cp, u2 attributes_count,
+                              bool is_static, u2 signature_index,
+                              u2* constantvalue_index_addr,
+                              bool* is_synthetic_addr,
+                              u2* generic_signature_index_addr,
+                              typeArrayHandle* field_annotations, TRAPS);
+  typeArrayHandle parse_fields(constantPoolHandle cp, bool is_interface,
+                               struct FieldAllocationCount *fac,
+                               objArrayHandle* fields_annotations, TRAPS);
+
+  // Method parsing
+  methodHandle parse_method(constantPoolHandle cp, bool is_interface,
+                            AccessFlags* promoted_flags,
+                            typeArrayHandle* method_annotations,
+                            typeArrayHandle* method_parameter_annotations,
+                            typeArrayHandle* method_default_annotations,
+                            TRAPS);
+  objArrayHandle parse_methods (constantPoolHandle cp, bool is_interface,
+                                AccessFlags* promoted_flags,
+                                bool* has_final_method,
+                                objArrayOop* methods_annotations_oop,
+                                objArrayOop* methods_parameter_annotations_oop,
+                                objArrayOop* methods_default_annotations_oop,
+                                TRAPS);
+  typeArrayHandle sort_methods (objArrayHandle methods,
+                                objArrayHandle methods_annotations,
+                                objArrayHandle methods_parameter_annotations,
+                                objArrayHandle methods_default_annotations,
+                                TRAPS);
+  typeArrayHandle parse_exception_table(u4 code_length, u4 exception_table_length,
+                                        constantPoolHandle cp, TRAPS);
+  void parse_linenumber_table(
+      u4 code_attribute_length, u4 code_length,
+      CompressedLineNumberWriteStream** write_stream, TRAPS);
+  u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
+                                constantPoolHandle cp, u2* localvariable_table_length,
+                                bool isLVTT, TRAPS);
+  u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
+                               constantPoolHandle cp, TRAPS);
+  void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
+                        u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS);
+  typeArrayOop parse_stackmap_table(u4 code_attribute_length, TRAPS);
+
+  // Classfile attribute parsing
+  void parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
+  void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
+                                                instanceKlassHandle k, int length, TRAPS);
+  u2   parse_classfile_inner_classes_attribute(constantPoolHandle cp,
+                                               instanceKlassHandle k, TRAPS);
+  void parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
+  void parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
+  void parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
+
+  // Annotations handling
+  typeArrayHandle assemble_annotations(u1* runtime_visible_annotations,
+                                       int runtime_visible_annotations_length,
+                                       u1* runtime_invisible_annotations,
+                                       int runtime_invisible_annotations_length, TRAPS);
+
+  // Final setup
+  int  compute_oop_map_size(instanceKlassHandle super, int nonstatic_oop_count,
+                            int first_nonstatic_oop_offset);
+  void fill_oop_maps(instanceKlassHandle k, int nonstatic_oop_map_count,
+                     u2* nonstatic_oop_offsets, u2* nonstatic_oop_length);
+  void set_precomputed_flags(instanceKlassHandle k);
+  objArrayHandle compute_transitive_interfaces(instanceKlassHandle super,
+                                               objArrayHandle local_ifs, TRAPS);
+
+  // Special handling for certain classes.
+  // Add the "discovered" field to java.lang.ref.Reference if
+  // it does not exist.
+  void java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr,
+    constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS);
+  // Adjust the field allocation counts for java.lang.Class to add
+  // fake fields.
+  void java_lang_Class_fix_pre(objArrayHandle* methods_ptr,
+    FieldAllocationCount *fac_ptr, TRAPS);
+  // Adjust the next_nonstatic_oop_offset to place the fake fields
+  // before any Java fields.
+  void java_lang_Class_fix_post(int* next_nonstatic_oop_offset);
+
+  // Format checker methods
+  void classfile_parse_error(const char* msg, TRAPS);
+  void classfile_parse_error(const char* msg, int index, TRAPS);
+  void classfile_parse_error(const char* msg, const char *name, TRAPS);
+  void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
+  inline void guarantee_property(bool b, const char* msg, TRAPS) {
+    if (!b) { classfile_parse_error(msg, CHECK); }
+  }
+
+  inline void assert_property(bool b, const char* msg, TRAPS) {
+#ifdef ASSERT
+    if (!b) { fatal(msg); }
+#endif
+  }
+
+  inline void check_property(bool property, const char* msg, int index, TRAPS) {
+    if (_need_verify) {
+      guarantee_property(property, msg, index, CHECK);
+    } else {
+      assert_property(property, msg, CHECK);
+    }
+  }
+
+  inline void check_property(bool property, const char* msg, TRAPS) {
+    if (_need_verify) {
+      guarantee_property(property, msg, CHECK);
+    } else {
+      assert_property(property, msg, CHECK);
+    }
+  }
+
+  inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
+    if (!b) { classfile_parse_error(msg, index, CHECK); }
+  }
+  inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
+    if (!b) { classfile_parse_error(msg, name, CHECK); }
+  }
+  inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
+    if (!b) { classfile_parse_error(msg, index, name, CHECK); }
+  }
+
+  bool is_supported_version(u2 major, u2 minor);
+  bool has_illegal_visibility(jint flags);
+
+  void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS);
+  void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
+  void verify_legal_class_name(symbolHandle name, TRAPS);
+  void verify_legal_field_name(symbolHandle name, TRAPS);
+  void verify_legal_method_name(symbolHandle name, TRAPS);
+  void verify_legal_field_signature(symbolHandle fieldname, symbolHandle signature, TRAPS);
+  int  verify_legal_method_signature(symbolHandle methodname, symbolHandle signature, TRAPS);
+  void verify_legal_class_modifiers(jint flags, TRAPS);
+  void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
+  void verify_legal_method_modifiers(jint flags, bool is_interface, symbolHandle name, TRAPS);
+  bool verify_unqualified_name(char* name, unsigned int length, int type);
+  char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
+  char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
+
+ public:
+  // Constructor
+  ClassFileParser(ClassFileStream* st) { set_stream(st); }
+
+  // Parse .class file and return new klassOop. The klassOop is not hooked up
+  // to the system dictionary or any other structures, so a .class file can
+  // be loaded several times if desired.
+  // The system dictionary hookup is done by the caller.
+  //
+  // "parsed_name" is updated by this method, and is the name found
+  // while parsing the stream.
+  instanceKlassHandle parseClassFile(symbolHandle name,
+                                     Handle class_loader,
+                                     Handle protection_domain,
+                                     symbolHandle& parsed_name,
+                                     TRAPS);
+
+  // Verifier checks
+  static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
+  static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
+  static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
+  static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
+};