1325 lines
37 KiB
C
1325 lines
37 KiB
C
/* Parser for Java(TM) .class files.
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Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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/* Written by Per Bothner <bothner@cygnus.com> */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tree.h"
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#include "real.h"
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#include "obstack.h"
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#include "flags.h"
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#include "java-except.h"
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#include "input.h"
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#include "java-tree.h"
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#include "toplev.h"
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#include "parse.h"
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#include "ggc.h"
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#include "debug.h"
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#include "assert.h"
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#include "tm_p.h"
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#include "cgraph.h"
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#ifdef HAVE_LOCALE_H
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#include <locale.h>
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#endif
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#ifdef HAVE_LANGINFO_CODESET
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#include <langinfo.h>
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#endif
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/* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
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#define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
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#define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
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#define JPOOL_UTF_DATA(JCF, INDEX) \
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((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
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#define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
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do { \
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unsigned char save; unsigned char *text; \
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JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
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text = (JCF)->read_ptr; \
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save = text[LENGTH]; \
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text[LENGTH] = 0; \
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(JCF)->cpool.data[INDEX].t = get_identifier (text); \
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text[LENGTH] = save; \
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JCF_SKIP (JCF, LENGTH); } while (0)
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#include "jcf.h"
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extern struct obstack temporary_obstack;
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static GTY(()) tree parse_roots[3];
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/* The FIELD_DECL for the current field. */
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#define current_field parse_roots[0]
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/* The METHOD_DECL for the current method. */
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#define current_method parse_roots[1]
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/* A list of file names. */
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#define current_file_list parse_roots[2]
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/* The Java archive that provides main_class; the main input file. */
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static GTY(()) struct JCF * main_jcf;
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static struct ZipFile *localToFile;
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/* Declarations of some functions used here. */
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static void handle_innerclass_attribute (int count, JCF *);
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static tree give_name_to_class (JCF *jcf, int index);
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static char *compute_class_name (struct ZipDirectory *zdir);
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static int classify_zip_file (struct ZipDirectory *zdir);
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static void parse_zip_file_entries (void);
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static void process_zip_dir (FILE *);
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static void parse_source_file_1 (tree, FILE *);
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static void parse_source_file_2 (void);
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static void parse_source_file_3 (void);
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static void parse_class_file (void);
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static void handle_deprecated (void);
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static void set_source_filename (JCF *, int);
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static void jcf_parse (struct JCF*);
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static void load_inner_classes (tree);
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/* Handle "Deprecated" attribute. */
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static void
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handle_deprecated (void)
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{
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if (current_field != NULL_TREE)
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FIELD_DEPRECATED (current_field) = 1;
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else if (current_method != NULL_TREE)
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METHOD_DEPRECATED (current_method) = 1;
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else if (current_class != NULL_TREE)
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CLASS_DEPRECATED (TYPE_NAME (current_class)) = 1;
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else
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{
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/* Shouldn't happen. */
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abort ();
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}
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}
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/* Handle "SourceFile" attribute. */
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static void
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set_source_filename (JCF *jcf, int index)
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{
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tree sfname_id = get_name_constant (jcf, index);
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const char *sfname = IDENTIFIER_POINTER (sfname_id);
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if (input_filename != NULL)
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{
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int old_len = strlen (input_filename);
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int new_len = IDENTIFIER_LENGTH (sfname_id);
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/* Use the current input_filename (derived from the class name)
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if it has a directory prefix, but otherwise matches sfname. */
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if (old_len > new_len
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&& strcmp (sfname, input_filename + old_len - new_len) == 0
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&& (input_filename[old_len - new_len - 1] == '/'
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|| input_filename[old_len - new_len - 1] == '\\'))
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return;
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}
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input_filename = sfname;
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DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
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if (current_class == main_class) main_input_filename = input_filename;
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}
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#define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
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#define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
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{ tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
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output_class = current_class = give_name_to_class (jcf, THIS); \
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set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
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#define HANDLE_CLASS_INTERFACE(INDEX) \
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add_interface (current_class, get_class_constant (jcf, INDEX))
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#define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
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{ int sig_index = SIGNATURE; \
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current_field = add_field (current_class, get_name_constant (jcf, NAME), \
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parse_signature (jcf, sig_index), ACCESS_FLAGS); \
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set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
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if ((ACCESS_FLAGS) & ACC_FINAL) \
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MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
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}
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#define HANDLE_END_FIELDS() \
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(current_field = NULL_TREE)
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#define HANDLE_CONSTANTVALUE(INDEX) \
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{ tree constant; int index = INDEX; \
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if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
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tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
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constant = build_utf8_ref (name); \
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} \
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else \
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constant = get_constant (jcf, index); \
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set_constant_value (current_field, constant); }
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#define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
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(current_method = add_method (current_class, ACCESS_FLAGS, \
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get_name_constant (jcf, NAME), \
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get_name_constant (jcf, SIGNATURE)), \
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DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
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DECL_LINENUMBERS_OFFSET (current_method) = 0)
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#define HANDLE_END_METHODS() \
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{ current_method = NULL_TREE; }
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#define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
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{ DECL_MAX_STACK (current_method) = (MAX_STACK); \
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DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
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DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
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DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
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#define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
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{ int n = (COUNT); \
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DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
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JCF_SKIP (jcf, n * 10); }
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#define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
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{ int n = (COUNT); \
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DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
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JCF_SKIP (jcf, n * 4); }
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#define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
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{ \
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int n = COUNT; \
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tree list = DECL_FUNCTION_THROWS (current_method); \
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while (--n >= 0) \
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{ \
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tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
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list = tree_cons (NULL_TREE, thrown_class, list); \
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} \
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DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
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}
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#define HANDLE_DEPRECATED_ATTRIBUTE() handle_deprecated ()
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/* Link seen inner classes to their outer context and register the
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inner class to its outer context. They will be later loaded. */
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#define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
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handle_innerclass_attribute (COUNT, jcf)
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#define HANDLE_SYNTHETIC_ATTRIBUTE() \
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{ \
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/* Irrelevant decls should have been nullified by the END macros. \
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We only handle the `Synthetic' attribute on method DECLs. \
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DECL_ARTIFICIAL on fields is used for something else (See \
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PUSH_FIELD in java-tree.h) */ \
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if (current_method) \
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DECL_ARTIFICIAL (current_method) = 1; \
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}
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#define HANDLE_GCJCOMPILED_ATTRIBUTE() \
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{ \
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if (current_class == object_type_node) \
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jcf->right_zip = 1; \
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}
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#include "jcf-reader.c"
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tree
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parse_signature (JCF *jcf, int sig_index)
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{
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if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf)
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|| JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
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abort ();
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else
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return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
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JPOOL_UTF_LENGTH (jcf, sig_index));
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}
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tree
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get_constant (JCF *jcf, int index)
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{
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tree value;
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int tag;
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if (index <= 0 || index >= JPOOL_SIZE(jcf))
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goto bad;
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tag = JPOOL_TAG (jcf, index);
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if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
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return jcf->cpool.data[index].t;
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switch (tag)
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{
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case CONSTANT_Integer:
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{
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jint num = JPOOL_INT(jcf, index);
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value = build_int_2 (num, num < 0 ? -1 : 0);
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TREE_TYPE (value) = int_type_node;
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break;
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}
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case CONSTANT_Long:
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{
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unsigned HOST_WIDE_INT num = JPOOL_UINT (jcf, index);
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HOST_WIDE_INT lo, hi;
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lshift_double (num, 0, 32, 64, &lo, &hi, 0);
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num = JPOOL_UINT (jcf, index+1);
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add_double (lo, hi, num, 0, &lo, &hi);
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value = build_int_2 (lo, hi);
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TREE_TYPE (value) = long_type_node;
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force_fit_type (value, 0);
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break;
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}
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case CONSTANT_Float:
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{
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jint num = JPOOL_INT(jcf, index);
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long buf = num;
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REAL_VALUE_TYPE d;
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real_from_target_fmt (&d, &buf, &ieee_single_format);
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value = build_real (float_type_node, d);
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break;
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}
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case CONSTANT_Double:
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{
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long buf[2], lo, hi;
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REAL_VALUE_TYPE d;
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hi = JPOOL_UINT (jcf, index);
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lo = JPOOL_UINT (jcf, index+1);
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if (FLOAT_WORDS_BIG_ENDIAN)
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buf[0] = hi, buf[1] = lo;
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else
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buf[0] = lo, buf[1] = hi;
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real_from_target_fmt (&d, buf, &ieee_double_format);
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value = build_real (double_type_node, d);
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break;
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}
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case CONSTANT_String:
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{
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tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
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const char *utf8_ptr = IDENTIFIER_POINTER (name);
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int utf8_len = IDENTIFIER_LENGTH (name);
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const unsigned char *utf8;
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int i;
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/* Check for a malformed Utf8 string. */
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utf8 = (const unsigned char *) utf8_ptr;
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i = utf8_len;
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while (i > 0)
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{
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int char_len = UT8_CHAR_LENGTH (*utf8);
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if (char_len < 0 || char_len > 3 || char_len > i)
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fatal_error ("bad string constant");
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utf8 += char_len;
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i -= char_len;
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}
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/* Allocate a new string value. */
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value = build_string (utf8_len, utf8_ptr);
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TREE_TYPE (value) = build_pointer_type (string_type_node);
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}
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break;
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default:
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goto bad;
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}
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JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
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jcf->cpool.data[index].t = value;
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return value;
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bad:
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internal_error ("bad value constant type %d, index %d",
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JPOOL_TAG (jcf, index), index);
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}
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tree
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get_name_constant (JCF *jcf, int index)
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{
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tree name = get_constant (jcf, index);
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if (TREE_CODE (name) != IDENTIFIER_NODE)
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abort ();
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return name;
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}
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/* Handle reading innerclass attributes. If a nonzero entry (denoting
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a non anonymous entry) is found, We augment the inner class list of
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the outer context with the newly resolved innerclass. */
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static void
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handle_innerclass_attribute (int count, JCF *jcf)
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{
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int c = (count);
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while (c--)
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{
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/* Read inner_class_info_index. This may be 0 */
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int icii = JCF_readu2 (jcf);
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/* Read outer_class_info_index. If the innerclasses attribute
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entry isn't a member (like an inner class) the value is 0. */
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int ocii = JCF_readu2 (jcf);
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/* Read inner_name_index. If the class we're dealing with is
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an anonymous class, it must be 0. */
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int ini = JCF_readu2 (jcf);
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/* Read the access flag. */
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int acc = JCF_readu2 (jcf);
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/* If icii is 0, don't try to read the class. */
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if (icii >= 0)
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{
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tree class = get_class_constant (jcf, icii);
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tree decl = TYPE_NAME (class);
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/* Skip reading further if ocii is null */
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if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
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{
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tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
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tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
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set_class_decl_access_flags (acc, decl);
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DECL_CONTEXT (decl) = outer;
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DECL_INNER_CLASS_LIST (outer) =
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tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
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CLASS_COMPLETE_P (decl) = 1;
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}
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}
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}
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}
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static tree
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give_name_to_class (JCF *jcf, int i)
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{
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if (i <= 0 || i >= JPOOL_SIZE (jcf)
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|| JPOOL_TAG (jcf, i) != CONSTANT_Class)
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abort ();
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else
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{
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tree this_class;
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int j = JPOOL_USHORT1 (jcf, i);
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/* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
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tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
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JPOOL_UTF_LENGTH (jcf, j));
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this_class = lookup_class (class_name);
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input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
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input_line = 0;
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if (main_input_filename == NULL && jcf == main_jcf)
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main_input_filename = input_filename;
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jcf->cpool.data[i].t = this_class;
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JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
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return this_class;
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}
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}
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|
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/* Get the class of the CONSTANT_Class whose constant pool index is I. */
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tree
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get_class_constant (JCF *jcf, int i)
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{
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tree type;
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if (i <= 0 || i >= JPOOL_SIZE (jcf)
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|| (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
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abort ();
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if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
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{
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int name_index = JPOOL_USHORT1 (jcf, i);
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/* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
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const char *name = JPOOL_UTF_DATA (jcf, name_index);
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int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
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if (name[0] == '[') /* Handle array "classes". */
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type = TREE_TYPE (parse_signature_string (name, nlength));
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else
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{
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tree cname = unmangle_classname (name, nlength);
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type = lookup_class (cname);
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}
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jcf->cpool.data[i].t = type;
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JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
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}
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else
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type = jcf->cpool.data[i].t;
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return type;
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}
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|
|
/* Read a class with the fully qualified-name NAME.
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Return 1 iff we read the requested file.
|
|
(It is still possible we failed if the file did not
|
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define the class it is supposed to.) */
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|
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int
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read_class (tree name)
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{
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JCF this_jcf, *jcf;
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|
tree icv, class = NULL_TREE;
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|
tree save_current_class = current_class;
|
|
tree save_output_class = output_class;
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|
location_t save_location = input_location;
|
|
JCF *save_current_jcf = current_jcf;
|
|
|
|
if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
|
|
{
|
|
class = TREE_TYPE (icv);
|
|
jcf = TYPE_JCF (class);
|
|
}
|
|
else
|
|
jcf = NULL;
|
|
|
|
if (jcf == NULL)
|
|
{
|
|
this_jcf.zipd = NULL;
|
|
jcf = &this_jcf;
|
|
if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
|
|
&this_jcf, 1) == 0)
|
|
return 0;
|
|
}
|
|
|
|
current_jcf = jcf;
|
|
|
|
if (current_jcf->java_source)
|
|
{
|
|
const char *filename = current_jcf->filename;
|
|
tree given_file, real_file;
|
|
FILE *finput;
|
|
int generate;
|
|
|
|
java_parser_context_save_global ();
|
|
java_push_parser_context ();
|
|
|
|
BUILD_FILENAME_IDENTIFIER_NODE (given_file, filename);
|
|
real_file = get_identifier (lrealpath (filename));
|
|
|
|
generate = IS_A_COMMAND_LINE_FILENAME_P (given_file);
|
|
if (wfl_operator == NULL_TREE)
|
|
wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
|
|
EXPR_WFL_FILENAME_NODE (wfl_operator) = given_file;
|
|
input_filename = ggc_strdup (filename);
|
|
output_class = current_class = NULL_TREE;
|
|
current_function_decl = NULL_TREE;
|
|
|
|
if (! HAS_BEEN_ALREADY_PARSED_P (real_file))
|
|
{
|
|
if (! (finput = fopen (input_filename, "r")))
|
|
fatal_error ("can't reopen %s: %m", input_filename);
|
|
|
|
parse_source_file_1 (real_file, finput);
|
|
parse_source_file_2 ();
|
|
parse_source_file_3 ();
|
|
|
|
if (fclose (finput))
|
|
fatal_error ("can't close %s: %m", input_filename);
|
|
}
|
|
JCF_FINISH (current_jcf);
|
|
java_pop_parser_context (generate);
|
|
java_parser_context_restore_global ();
|
|
}
|
|
else
|
|
{
|
|
if (class == NULL_TREE || ! CLASS_PARSED_P (class))
|
|
{
|
|
java_parser_context_save_global ();
|
|
java_push_parser_context ();
|
|
output_class = current_class = class;
|
|
input_filename = current_jcf->filename;
|
|
if (JCF_SEEN_IN_ZIP (current_jcf))
|
|
read_zip_member(current_jcf,
|
|
current_jcf->zipd, current_jcf->zipd->zipf);
|
|
jcf_parse (current_jcf);
|
|
/* Parsing might change the class, in which case we have to
|
|
put it back where we found it. */
|
|
if (current_class != class && icv != NULL_TREE)
|
|
TREE_TYPE (icv) = current_class;
|
|
class = current_class;
|
|
java_pop_parser_context (0);
|
|
java_parser_context_restore_global ();
|
|
}
|
|
layout_class (class);
|
|
load_inner_classes (class);
|
|
}
|
|
|
|
output_class = save_output_class;
|
|
current_class = save_current_class;
|
|
input_location = save_location;
|
|
current_jcf = save_current_jcf;
|
|
return 1;
|
|
}
|
|
|
|
/* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
|
|
called from the parser, otherwise it's a RECORD_TYPE node. If
|
|
VERBOSE is 1, print error message on failure to load a class. */
|
|
void
|
|
load_class (tree class_or_name, int verbose)
|
|
{
|
|
tree name, saved;
|
|
int class_loaded;
|
|
|
|
/* class_or_name can be the name of the class we want to load */
|
|
if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
|
|
name = class_or_name;
|
|
/* In some cases, it's a dependency that we process earlier that
|
|
we though */
|
|
else if (TREE_CODE (class_or_name) == TREE_LIST)
|
|
name = TYPE_NAME (TREE_PURPOSE (class_or_name));
|
|
/* Or it's a type in the making */
|
|
else
|
|
{
|
|
/* If the class is from source code, then it must already be loaded. */
|
|
if (CLASS_FROM_SOURCE_P (class_or_name))
|
|
return;
|
|
name = DECL_NAME (TYPE_NAME (class_or_name));
|
|
}
|
|
|
|
saved = name;
|
|
while (1)
|
|
{
|
|
char *separator;
|
|
|
|
if ((class_loaded = read_class (name)))
|
|
break;
|
|
|
|
/* We failed loading name. Now consider that we might be looking
|
|
for a inner class. */
|
|
if ((separator = strrchr (IDENTIFIER_POINTER (name), '$'))
|
|
|| (separator = strrchr (IDENTIFIER_POINTER (name), '.')))
|
|
{
|
|
int c = *separator;
|
|
*separator = '\0';
|
|
name = get_identifier (IDENTIFIER_POINTER (name));
|
|
*separator = c;
|
|
}
|
|
/* Otherwise, we failed, we bail. */
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (!class_loaded && verbose)
|
|
error ("cannot find file for class %s", IDENTIFIER_POINTER (saved));
|
|
}
|
|
|
|
/* Parse the .class file JCF. */
|
|
|
|
static void
|
|
jcf_parse (JCF* jcf)
|
|
{
|
|
int i, code;
|
|
|
|
if (jcf_parse_preamble (jcf) != 0)
|
|
fatal_error ("not a valid Java .class file");
|
|
code = jcf_parse_constant_pool (jcf);
|
|
if (code != 0)
|
|
fatal_error ("error while parsing constant pool");
|
|
code = verify_constant_pool (jcf);
|
|
if (code > 0)
|
|
fatal_error ("error in constant pool entry #%d\n", code);
|
|
|
|
jcf_parse_class (jcf);
|
|
if (main_class == NULL_TREE)
|
|
main_class = current_class;
|
|
if (! quiet_flag && TYPE_NAME (current_class))
|
|
fprintf (stderr, " %s %s",
|
|
(jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
|
|
IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
|
|
if (CLASS_PARSED_P (current_class))
|
|
{
|
|
/* FIXME - where was first time */
|
|
fatal_error ("reading class %s for the second time from %s",
|
|
IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))),
|
|
jcf->filename);
|
|
}
|
|
CLASS_PARSED_P (current_class) = 1;
|
|
|
|
for (i = 1; i < JPOOL_SIZE(jcf); i++)
|
|
{
|
|
switch (JPOOL_TAG (jcf, i))
|
|
{
|
|
case CONSTANT_Class:
|
|
get_class_constant (jcf, i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
code = jcf_parse_fields (jcf);
|
|
if (code != 0)
|
|
fatal_error ("error while parsing fields");
|
|
code = jcf_parse_methods (jcf);
|
|
if (code != 0)
|
|
fatal_error ("error while parsing methods");
|
|
code = jcf_parse_final_attributes (jcf);
|
|
if (code != 0)
|
|
fatal_error ("error while parsing final attributes");
|
|
|
|
/* The fields of class_type_node are already in correct order. */
|
|
if (current_class != class_type_node && current_class != object_type_node)
|
|
TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
|
|
|
|
if (current_class == object_type_node)
|
|
{
|
|
layout_class_methods (object_type_node);
|
|
/* If we don't have the right archive, emit a verbose warning.
|
|
If we're generating bytecode, emit the warning only if
|
|
-fforce-classes-archive-check was specified. */
|
|
if (!jcf->right_zip
|
|
&& (!flag_emit_class_files || flag_force_classes_archive_check))
|
|
fatal_error ("the `java.lang.Object' that was found in `%s' didn't have the special zero-length `gnu.gcj.gcj-compiled' attribute. This generally means that your classpath is incorrectly set. Use `info gcj \"Input Options\"' to see the info page describing how to set the classpath", jcf->filename);
|
|
}
|
|
else
|
|
all_class_list = tree_cons (NULL_TREE,
|
|
TYPE_NAME (current_class), all_class_list );
|
|
}
|
|
|
|
/* If we came across inner classes, load them now. */
|
|
static void
|
|
load_inner_classes (tree cur_class)
|
|
{
|
|
tree current;
|
|
for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
|
|
current = TREE_CHAIN (current))
|
|
{
|
|
tree name = DECL_NAME (TREE_PURPOSE (current));
|
|
tree decl = IDENTIFIER_GLOBAL_VALUE (name);
|
|
if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
|
|
&& !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
|
|
load_class (name, 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
parse_class_file (void)
|
|
{
|
|
tree method;
|
|
location_t save_location = input_location;
|
|
|
|
java_layout_seen_class_methods ();
|
|
|
|
input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
|
|
input_line = 0;
|
|
(*debug_hooks->start_source_file) (input_line, input_filename);
|
|
|
|
/* Currently we always have to emit calls to _Jv_InitClass when
|
|
compiling from class files. */
|
|
always_initialize_class_p = 1;
|
|
|
|
gen_indirect_dispatch_tables (current_class);
|
|
|
|
java_mark_class_local (current_class);
|
|
|
|
for (method = TYPE_METHODS (current_class);
|
|
method != NULL_TREE; method = TREE_CHAIN (method))
|
|
{
|
|
JCF *jcf = current_jcf;
|
|
|
|
if (METHOD_ABSTRACT (method))
|
|
continue;
|
|
|
|
if (METHOD_NATIVE (method))
|
|
{
|
|
tree arg;
|
|
int decl_max_locals;
|
|
|
|
if (! flag_jni)
|
|
continue;
|
|
/* We need to compute the DECL_MAX_LOCALS. We need to take
|
|
the wide types into account too. */
|
|
for (arg = TYPE_ARG_TYPES (TREE_TYPE (method)), decl_max_locals = 0;
|
|
arg != end_params_node;
|
|
arg = TREE_CHAIN (arg), decl_max_locals += 1)
|
|
{
|
|
if (TREE_VALUE (arg) && TYPE_IS_WIDE (TREE_VALUE (arg)))
|
|
decl_max_locals += 1;
|
|
}
|
|
DECL_MAX_LOCALS (method) = decl_max_locals;
|
|
start_java_method (method);
|
|
give_name_to_locals (jcf);
|
|
*get_stmts () = build_jni_stub (method);
|
|
end_java_method ();
|
|
continue;
|
|
}
|
|
|
|
if (DECL_CODE_OFFSET (method) == 0)
|
|
{
|
|
current_function_decl = method;
|
|
error ("missing Code attribute");
|
|
continue;
|
|
}
|
|
|
|
input_line = 0;
|
|
if (DECL_LINENUMBERS_OFFSET (method))
|
|
{
|
|
int i;
|
|
unsigned char *ptr;
|
|
JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
|
|
linenumber_count = i = JCF_readu2 (jcf);
|
|
linenumber_table = ptr = jcf->read_ptr;
|
|
|
|
for (ptr += 2; --i >= 0; ptr += 4)
|
|
{
|
|
int line = GET_u2 (ptr);
|
|
/* Set initial input_line to smallest linenumber.
|
|
* Needs to be set before init_function_start. */
|
|
if (input_line == 0 || line < input_line)
|
|
input_line = line;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
linenumber_table = NULL;
|
|
linenumber_count = 0;
|
|
}
|
|
|
|
start_java_method (method);
|
|
|
|
note_instructions (jcf, method);
|
|
|
|
give_name_to_locals (jcf);
|
|
|
|
/* Convert bytecode to trees. */
|
|
expand_byte_code (jcf, method);
|
|
|
|
end_java_method ();
|
|
}
|
|
|
|
if (flag_emit_class_files)
|
|
write_classfile (current_class);
|
|
|
|
finish_class ();
|
|
|
|
(*debug_hooks->end_source_file) (save_location.line);
|
|
input_location = save_location;
|
|
}
|
|
|
|
/* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
|
|
|
|
static void
|
|
parse_source_file_1 (tree real_file, FILE *finput)
|
|
{
|
|
int save_error_count = java_error_count;
|
|
|
|
/* Mark the file as parsed. */
|
|
HAS_BEEN_ALREADY_PARSED_P (real_file) = 1;
|
|
|
|
jcf_dependency_add_file (input_filename, 0);
|
|
|
|
lang_init_source (1); /* Error msgs have no method prototypes */
|
|
|
|
/* There's no point in trying to find the current encoding unless we
|
|
are going to do something intelligent with it -- hence the test
|
|
for iconv. */
|
|
#if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
|
|
setlocale (LC_CTYPE, "");
|
|
if (current_encoding == NULL)
|
|
current_encoding = nl_langinfo (CODESET);
|
|
#endif
|
|
if (current_encoding == NULL || *current_encoding == '\0')
|
|
current_encoding = DEFAULT_ENCODING;
|
|
|
|
/* Initialize the parser */
|
|
java_init_lex (finput, current_encoding);
|
|
java_parse_abort_on_error ();
|
|
|
|
java_parse (); /* Parse and build partial tree nodes. */
|
|
java_parse_abort_on_error ();
|
|
}
|
|
|
|
/* Process a parsed source file, resolving names etc. */
|
|
|
|
static void
|
|
parse_source_file_2 (void)
|
|
{
|
|
int save_error_count = java_error_count;
|
|
java_complete_class (); /* Parse unsatisfied class decl. */
|
|
java_parse_abort_on_error ();
|
|
}
|
|
|
|
static void
|
|
parse_source_file_3 (void)
|
|
{
|
|
int save_error_count = java_error_count;
|
|
java_check_circular_reference (); /* Check on circular references */
|
|
java_parse_abort_on_error ();
|
|
java_fix_constructors (); /* Fix the constructors */
|
|
java_parse_abort_on_error ();
|
|
java_reorder_fields (); /* Reorder the fields */
|
|
}
|
|
|
|
void
|
|
add_predefined_file (tree name)
|
|
{
|
|
predef_filenames = tree_cons (NULL_TREE, name, predef_filenames);
|
|
}
|
|
|
|
int
|
|
predefined_filename_p (tree node)
|
|
{
|
|
tree iter;
|
|
|
|
for (iter = predef_filenames; iter != NULL_TREE; iter = TREE_CHAIN (iter))
|
|
{
|
|
if (TREE_VALUE (iter) == node)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
java_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
|
|
{
|
|
int filename_count = 0;
|
|
char *list, *next;
|
|
tree node;
|
|
FILE *finput = NULL;
|
|
|
|
if (flag_filelist_file)
|
|
{
|
|
int avail = 2000;
|
|
finput = fopen (input_filename, "r");
|
|
if (finput == NULL)
|
|
fatal_error ("can't open %s: %m", input_filename);
|
|
list = xmalloc(avail);
|
|
next = list;
|
|
for (;;)
|
|
{
|
|
int count;
|
|
if (avail < 500)
|
|
{
|
|
count = next - list;
|
|
avail = 2 * (count + avail);
|
|
list = xrealloc (list, avail);
|
|
next = list + count;
|
|
avail = avail - count;
|
|
}
|
|
/* Subtract to to guarantee space for final '\0'. */
|
|
count = fread (next, 1, avail - 1, finput);
|
|
if (count == 0)
|
|
{
|
|
if (! feof (finput))
|
|
fatal_error ("error closing %s: %m", input_filename);
|
|
*next = '\0';
|
|
break;
|
|
}
|
|
avail -= count;
|
|
next += count;
|
|
}
|
|
fclose (finput);
|
|
finput = NULL;
|
|
}
|
|
else
|
|
list = input_filename ? xstrdup (input_filename) : 0;
|
|
|
|
while (list)
|
|
{
|
|
for (next = list; ; )
|
|
{
|
|
char ch = *next;
|
|
if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
|
|
|| ch == '&' /* FIXME */)
|
|
{
|
|
if (next == list)
|
|
{
|
|
next++;
|
|
list = next;
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
*next++ = '\0';
|
|
break;
|
|
}
|
|
}
|
|
if (ch == '\0')
|
|
{
|
|
next = NULL;
|
|
break;
|
|
}
|
|
next++;
|
|
}
|
|
|
|
if (list[0])
|
|
{
|
|
char *value;
|
|
tree id;
|
|
int twice = 0;
|
|
|
|
int len = strlen (list);
|
|
|
|
obstack_grow0 (&temporary_obstack, list, len);
|
|
value = obstack_finish (&temporary_obstack);
|
|
|
|
filename_count++;
|
|
|
|
/* Exclude file that we see twice on the command line. For
|
|
all files except {Class,Error,Object,RuntimeException,String,
|
|
Throwable}.java we can rely on maybe_get_identifier. For
|
|
these files, we need to do a linear search of
|
|
current_file_list. This search happens only for these
|
|
files, presumably only when we're recompiling libgcj. */
|
|
|
|
if ((id = maybe_get_identifier (value)))
|
|
{
|
|
if (predefined_filename_p (id))
|
|
{
|
|
tree c;
|
|
for (c = current_file_list; c; c = TREE_CHAIN (c))
|
|
if (TREE_VALUE (c) == id)
|
|
twice = 1;
|
|
}
|
|
else
|
|
twice = 1;
|
|
}
|
|
|
|
if (twice)
|
|
{
|
|
location_t warn_loc;
|
|
warn_loc.file = value;
|
|
warn_loc.line = 0;
|
|
warning ("%Hsource file seen twice on command line and "
|
|
"will be compiled only once", &warn_loc);
|
|
}
|
|
else
|
|
{
|
|
BUILD_FILENAME_IDENTIFIER_NODE (node, value);
|
|
IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
|
|
current_file_list = tree_cons (NULL_TREE, node,
|
|
current_file_list);
|
|
}
|
|
}
|
|
list = next;
|
|
}
|
|
|
|
if (filename_count == 0)
|
|
warning ("no input file specified");
|
|
|
|
if (resource_name)
|
|
{
|
|
const char *resource_filename;
|
|
|
|
/* Only one resource file may be compiled at a time. */
|
|
assert (TREE_CHAIN (current_file_list) == NULL);
|
|
|
|
resource_filename = IDENTIFIER_POINTER (TREE_VALUE (current_file_list));
|
|
compile_resource_file (resource_name, resource_filename);
|
|
|
|
return;
|
|
}
|
|
|
|
current_jcf = main_jcf;
|
|
current_file_list = nreverse (current_file_list);
|
|
for (node = current_file_list; node; node = TREE_CHAIN (node))
|
|
{
|
|
unsigned char magic_string[4];
|
|
uint32 magic = 0;
|
|
tree name = TREE_VALUE (node);
|
|
tree real_file;
|
|
|
|
/* Skip already parsed files */
|
|
real_file = get_identifier (lrealpath (IDENTIFIER_POINTER (name)));
|
|
if (HAS_BEEN_ALREADY_PARSED_P (real_file))
|
|
continue;
|
|
|
|
/* Close previous descriptor, if any */
|
|
if (finput && fclose (finput))
|
|
fatal_error ("can't close input file %s: %m", main_input_filename);
|
|
|
|
finput = fopen (IDENTIFIER_POINTER (name), "rb");
|
|
if (finput == NULL)
|
|
fatal_error ("can't open %s: %m", IDENTIFIER_POINTER (name));
|
|
|
|
#ifdef IO_BUFFER_SIZE
|
|
setvbuf (finput, xmalloc (IO_BUFFER_SIZE),
|
|
_IOFBF, IO_BUFFER_SIZE);
|
|
#endif
|
|
input_filename = IDENTIFIER_POINTER (name);
|
|
|
|
/* Figure what kind of file we're dealing with */
|
|
if (fread (magic_string, 1, 4, finput) == 4)
|
|
{
|
|
fseek (finput, 0L, SEEK_SET);
|
|
magic = GET_u4 (magic_string);
|
|
}
|
|
if (magic == 0xcafebabe)
|
|
{
|
|
CLASS_FILE_P (node) = 1;
|
|
current_jcf = ggc_alloc (sizeof (JCF));
|
|
JCF_ZERO (current_jcf);
|
|
current_jcf->read_state = finput;
|
|
current_jcf->filbuf = jcf_filbuf_from_stdio;
|
|
jcf_parse (current_jcf);
|
|
TYPE_JCF (current_class) = current_jcf;
|
|
CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
|
|
TREE_PURPOSE (node) = current_class;
|
|
}
|
|
else if (magic == (JCF_u4)ZIPMAGIC)
|
|
{
|
|
ZIP_FILE_P (node) = 1;
|
|
main_jcf = ggc_alloc (sizeof (JCF));
|
|
JCF_ZERO (main_jcf);
|
|
main_jcf->read_state = finput;
|
|
main_jcf->filbuf = jcf_filbuf_from_stdio;
|
|
if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
|
|
fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
|
|
localToFile = SeenZipFiles;
|
|
/* Register all the classes defined there. */
|
|
process_zip_dir (main_jcf->read_state);
|
|
parse_zip_file_entries ();
|
|
/*
|
|
for (each entry)
|
|
CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
|
|
*/
|
|
}
|
|
else
|
|
{
|
|
JAVA_FILE_P (node) = 1;
|
|
java_push_parser_context ();
|
|
java_parser_context_save_global ();
|
|
|
|
parse_source_file_1 (real_file, finput);
|
|
java_parser_context_restore_global ();
|
|
java_pop_parser_context (1);
|
|
}
|
|
}
|
|
|
|
for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
|
|
{
|
|
input_filename = ctxp->filename;
|
|
parse_source_file_2 ();
|
|
}
|
|
|
|
for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
|
|
{
|
|
input_filename = ctxp->filename;
|
|
parse_source_file_3 ();
|
|
}
|
|
|
|
for (node = current_file_list; node; node = TREE_CHAIN (node))
|
|
{
|
|
input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
|
|
if (CLASS_FILE_P (node))
|
|
{
|
|
output_class = current_class = TREE_PURPOSE (node);
|
|
current_jcf = TYPE_JCF (current_class);
|
|
layout_class (current_class);
|
|
load_inner_classes (current_class);
|
|
parse_class_file ();
|
|
JCF_FINISH (current_jcf);
|
|
}
|
|
}
|
|
input_filename = main_input_filename;
|
|
|
|
java_expand_classes ();
|
|
if (!java_report_errors () && !flag_syntax_only)
|
|
{
|
|
/* Expand all classes compiled from source. */
|
|
java_finish_classes ();
|
|
|
|
/* Emit the .jcf section. */
|
|
emit_register_classes ();
|
|
|
|
/* Only finalize the compilation unit after we've told cgraph which
|
|
functions have their addresses stored. */
|
|
cgraph_finalize_compilation_unit ();
|
|
cgraph_optimize ();
|
|
}
|
|
|
|
write_resource_constructor ();
|
|
}
|
|
|
|
/* Return the name of the class corresponding to the name of the file
|
|
in this zip entry. The result is newly allocated using ALLOC. */
|
|
static char *
|
|
compute_class_name (struct ZipDirectory *zdir)
|
|
{
|
|
char *class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
|
|
char *class_name;
|
|
int j;
|
|
|
|
class_name = ALLOC (zdir->filename_length + 1 - 6);
|
|
strncpy (class_name, class_name_in_zip_dir, zdir->filename_length - 6);
|
|
class_name [zdir->filename_length - 6] = '\0';
|
|
for (j = 0; class_name[j]; ++j)
|
|
class_name[j] = class_name[j] == '/' ? '.' : class_name[j];
|
|
return class_name;
|
|
}
|
|
|
|
/* Return 0 if we should skip this entry, 1 if it is a .class file, 2
|
|
if it is a property file of some sort. */
|
|
static int
|
|
classify_zip_file (struct ZipDirectory *zdir)
|
|
{
|
|
char *class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
|
|
|
|
if (zdir->filename_length > 6
|
|
&& !strncmp (&class_name_in_zip_dir[zdir->filename_length - 6],
|
|
".class", 6))
|
|
return 1;
|
|
|
|
/* For now we drop the manifest, but not other information. */
|
|
if (zdir->filename_length == 20
|
|
&& !strncmp (class_name_in_zip_dir, "META-INF/MANIFEST.MF", 20))
|
|
return 0;
|
|
|
|
/* Drop directory entries. */
|
|
if (zdir->filename_length > 0
|
|
&& class_name_in_zip_dir[zdir->filename_length - 1] == '/')
|
|
return 0;
|
|
|
|
return 2;
|
|
}
|
|
|
|
/* Process all class entries found in the zip file. */
|
|
static void
|
|
parse_zip_file_entries (void)
|
|
{
|
|
struct ZipDirectory *zdir;
|
|
int i;
|
|
|
|
for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
|
|
i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
|
|
{
|
|
tree class;
|
|
|
|
switch (classify_zip_file (zdir))
|
|
{
|
|
case 0:
|
|
continue;
|
|
|
|
case 1:
|
|
{
|
|
char *class_name = compute_class_name (zdir);
|
|
class = lookup_class (get_identifier (class_name));
|
|
FREE (class_name);
|
|
current_jcf = TYPE_JCF (class);
|
|
output_class = current_class = class;
|
|
|
|
if (! CLASS_LOADED_P (class))
|
|
{
|
|
if (! CLASS_PARSED_P (class))
|
|
{
|
|
read_zip_member (current_jcf, zdir, localToFile);
|
|
jcf_parse (current_jcf);
|
|
}
|
|
layout_class (current_class);
|
|
load_inner_classes (current_class);
|
|
}
|
|
|
|
if (TYPE_SIZE (current_class) != error_mark_node)
|
|
{
|
|
input_filename = current_jcf->filename;
|
|
parse_class_file ();
|
|
FREE (current_jcf->buffer); /* No longer necessary */
|
|
/* Note: there is a way to free this buffer right after a
|
|
class seen in a zip file has been parsed. The idea is the
|
|
set its jcf in such a way that buffer will be reallocated
|
|
the time the code for the class will be generated. FIXME. */
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 2:
|
|
{
|
|
char *file_name, *class_name_in_zip_dir, *buffer;
|
|
JCF *jcf;
|
|
file_name = ALLOC (zdir->filename_length + 1);
|
|
class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
|
|
strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
|
|
file_name[zdir->filename_length] = '\0';
|
|
jcf = ALLOC (sizeof (JCF));
|
|
JCF_ZERO (jcf);
|
|
jcf->read_state = finput;
|
|
jcf->filbuf = jcf_filbuf_from_stdio;
|
|
jcf->java_source = 0;
|
|
jcf->classname = NULL;
|
|
jcf->filename = file_name;
|
|
jcf->zipd = zdir;
|
|
|
|
if (read_zip_member (jcf, zdir, localToFile) < 0)
|
|
fatal_error ("error while reading %s from zip file", file_name);
|
|
|
|
buffer = ALLOC (zdir->filename_length + 1 +
|
|
(jcf->buffer_end - jcf->buffer));
|
|
strcpy (buffer, file_name);
|
|
/* This is not a typo: we overwrite the trailing \0 of the
|
|
file name; this is just how the data is laid out. */
|
|
memcpy (buffer + zdir->filename_length,
|
|
jcf->buffer, jcf->buffer_end - jcf->buffer);
|
|
|
|
compile_resource_data (file_name, buffer,
|
|
jcf->buffer_end - jcf->buffer);
|
|
JCF_FINISH (jcf);
|
|
FREE (jcf);
|
|
FREE (buffer);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Read all the entries of the zip file, creates a class and a JCF. Sets the
|
|
jcf up for further processing and link it to the created class. */
|
|
|
|
static void
|
|
process_zip_dir (FILE *finput)
|
|
{
|
|
int i;
|
|
ZipDirectory *zdir;
|
|
|
|
for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
|
|
i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
|
|
{
|
|
char *class_name, *file_name, *class_name_in_zip_dir;
|
|
tree class;
|
|
JCF *jcf;
|
|
|
|
class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
|
|
|
|
/* Here we skip non-class files; we handle them later. */
|
|
if (classify_zip_file (zdir) != 1)
|
|
continue;
|
|
|
|
class_name = compute_class_name (zdir);
|
|
file_name = ALLOC (zdir->filename_length+1);
|
|
jcf = ggc_alloc (sizeof (JCF));
|
|
JCF_ZERO (jcf);
|
|
|
|
strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
|
|
file_name [zdir->filename_length] = '\0';
|
|
|
|
class = lookup_class (get_identifier (class_name));
|
|
|
|
jcf->read_state = finput;
|
|
jcf->filbuf = jcf_filbuf_from_stdio;
|
|
jcf->java_source = 0;
|
|
jcf->classname = class_name;
|
|
jcf->filename = file_name;
|
|
jcf->zipd = zdir;
|
|
|
|
TYPE_JCF (class) = jcf;
|
|
}
|
|
}
|
|
|
|
/* Initialization. */
|
|
|
|
void
|
|
init_jcf_parse (void)
|
|
{
|
|
init_src_parse ();
|
|
}
|
|
|
|
#include "gt-java-jcf-parse.h"
|