| /* Parser for Java(TM) .class files. |
| Copyright (C) 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
| |
| This file is part of GNU CC. |
| |
| GNU CC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU CC 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. |
| |
| Java and all Java-based marks are trademarks or registered trademarks |
| of Sun Microsystems, Inc. in the United States and other countries. |
| The Free Software Foundation is independent of Sun Microsystems, Inc. */ |
| |
| /* Written by Per Bothner <bothner@cygnus.com> */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "tree.h" |
| #include "obstack.h" |
| #include "flags.h" |
| #include "java-except.h" |
| #include "input.h" |
| #include "java-tree.h" |
| #include "toplev.h" |
| #include "parse.h" |
| #include "ggc.h" |
| #include "debug.h" |
| #include "assert.h" |
| |
| #ifdef HAVE_LOCALE_H |
| #include <locale.h> |
| #endif |
| |
| #ifdef HAVE_NL_LANGINFO |
| #include <langinfo.h> |
| #endif |
| |
| /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */ |
| #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX) |
| #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX)) |
| #define JPOOL_UTF_DATA(JCF, INDEX) \ |
| ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX))) |
| #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \ |
| do { \ |
| unsigned char save; unsigned char *text; \ |
| JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \ |
| text = (JCF)->read_ptr; \ |
| save = text[LENGTH]; \ |
| text[LENGTH] = 0; \ |
| (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \ |
| text[LENGTH] = save; \ |
| JCF_SKIP (JCF, LENGTH); } while (0) |
| |
| #include "jcf.h" |
| |
| extern struct obstack *saveable_obstack; |
| extern struct obstack temporary_obstack; |
| extern struct obstack permanent_obstack; |
| |
| /* Set to non-zero value in order to emit class initilization code |
| before static field references. */ |
| extern int always_initialize_class_p; |
| |
| static tree parse_roots[3] = { NULL_TREE, NULL_TREE, NULL_TREE }; |
| |
| /* The FIELD_DECL for the current field. */ |
| #define current_field parse_roots[0] |
| |
| /* The METHOD_DECL for the current method. */ |
| #define current_method parse_roots[1] |
| |
| /* A list of file names. */ |
| #define current_file_list parse_roots[2] |
| |
| /* The Java archive that provides main_class; the main input file. */ |
| static struct JCF main_jcf[1]; |
| |
| static struct ZipFile *localToFile; |
| |
| /* Declarations of some functions used here. */ |
| static void handle_innerclass_attribute PARAMS ((int count, JCF *)); |
| static tree give_name_to_class PARAMS ((JCF *jcf, int index)); |
| static void parse_zip_file_entries PARAMS ((void)); |
| static void process_zip_dir PARAMS ((FILE *)); |
| static void parse_source_file_1 PARAMS ((tree, FILE *)); |
| static void parse_source_file_2 PARAMS ((void)); |
| static void parse_class_file PARAMS ((void)); |
| static void set_source_filename PARAMS ((JCF *, int)); |
| static int predefined_filename_p PARAMS ((tree)); |
| static void ggc_mark_jcf PARAMS ((void**)); |
| static void jcf_parse PARAMS ((struct JCF*)); |
| static void load_inner_classes PARAMS ((tree)); |
| |
| /* Mark (for garbage collection) all the tree nodes that are |
| referenced from JCF's constant pool table. Do that only if the JCF |
| hasn't been marked finished. */ |
| |
| static void |
| ggc_mark_jcf (elt) |
| void **elt; |
| { |
| JCF *jcf = *(JCF**) elt; |
| if (jcf != NULL && !jcf->finished) |
| { |
| CPool *cpool = &jcf->cpool; |
| int size = CPOOL_COUNT(cpool); |
| int index; |
| for (index = 1; index < size; index++) |
| { |
| int tag = JPOOL_TAG (jcf, index); |
| if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8) |
| ggc_mark_tree ((tree) cpool->data[index]); |
| } |
| } |
| } |
| |
| /* Handle "SourceFile" attribute. */ |
| |
| static void |
| set_source_filename (jcf, index) |
| JCF *jcf; |
| int index; |
| { |
| tree sfname_id = get_name_constant (jcf, index); |
| const char *sfname = IDENTIFIER_POINTER (sfname_id); |
| if (input_filename != NULL) |
| { |
| int old_len = strlen (input_filename); |
| int new_len = IDENTIFIER_LENGTH (sfname_id); |
| /* Use the current input_filename (derived from the class name) |
| if it has a directory prefix, but otherwise matches sfname. */ |
| if (old_len > new_len |
| && strcmp (sfname, input_filename + old_len - new_len) == 0 |
| && (input_filename[old_len - new_len - 1] == '/' |
| || input_filename[old_len - new_len - 1] == '\\')) |
| return; |
| } |
| input_filename = sfname; |
| DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname; |
| if (current_class == main_class) main_input_filename = input_filename; |
| } |
| |
| #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX) |
| |
| #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \ |
| { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \ |
| current_class = give_name_to_class (jcf, THIS); \ |
| set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);} |
| |
| #define HANDLE_CLASS_INTERFACE(INDEX) \ |
| add_interface (current_class, get_class_constant (jcf, INDEX)) |
| |
| #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \ |
| { int sig_index = SIGNATURE; \ |
| current_field = add_field (current_class, get_name_constant (jcf, NAME), \ |
| parse_signature (jcf, sig_index), ACCESS_FLAGS); \ |
| set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \ |
| if ((ACCESS_FLAGS) & ACC_FINAL) \ |
| MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \ |
| } |
| |
| #define HANDLE_END_FIELDS() \ |
| (current_field = NULL_TREE) |
| |
| #define HANDLE_CONSTANTVALUE(INDEX) \ |
| { tree constant; int index = INDEX; \ |
| if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \ |
| tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \ |
| constant = build_utf8_ref (name); \ |
| } \ |
| else \ |
| constant = get_constant (jcf, index); \ |
| set_constant_value (current_field, constant); } |
| |
| #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \ |
| (current_method = add_method (current_class, ACCESS_FLAGS, \ |
| get_name_constant (jcf, NAME), \ |
| get_name_constant (jcf, SIGNATURE)), \ |
| DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \ |
| DECL_LINENUMBERS_OFFSET (current_method) = 0) |
| |
| #define HANDLE_END_METHODS() \ |
| { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \ |
| if (handle_type != current_class) layout_type (handle_type); \ |
| current_method = NULL_TREE; } |
| |
| #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \ |
| { DECL_MAX_STACK (current_method) = (MAX_STACK); \ |
| DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \ |
| DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \ |
| DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); } |
| |
| #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \ |
| { int n = (COUNT); \ |
| DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \ |
| JCF_SKIP (jcf, n * 10); } |
| |
| #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \ |
| { int n = (COUNT); \ |
| DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \ |
| JCF_SKIP (jcf, n * 4); } |
| |
| #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \ |
| { \ |
| int n = COUNT; \ |
| tree list = DECL_FUNCTION_THROWS (current_method); \ |
| while (--n >= 0) \ |
| { \ |
| tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \ |
| list = tree_cons (NULL_TREE, thrown_class, list); \ |
| } \ |
| DECL_FUNCTION_THROWS (current_method) = nreverse (list); \ |
| } |
| |
| /* Link seen inner classes to their outer context and register the |
| inner class to its outer context. They will be later loaded. */ |
| #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \ |
| handle_innerclass_attribute (COUNT, jcf) |
| |
| #define HANDLE_SYNTHETIC_ATTRIBUTE() \ |
| { \ |
| /* Irrelevant decls should have been nullified by the END macros. \ |
| We only handle the `Synthetic' attribute on method DECLs. \ |
| DECL_ARTIFICIAL on fields is used for something else (See \ |
| PUSH_FIELD in java-tree.h) */ \ |
| if (current_method) \ |
| DECL_ARTIFICIAL (current_method) = 1; \ |
| } |
| |
| #define HANDLE_GCJCOMPILED_ATTRIBUTE() \ |
| { \ |
| if (current_class == object_type_node) \ |
| jcf->right_zip = 1; \ |
| } |
| |
| #include "jcf-reader.c" |
| |
| static int yydebug; |
| |
| tree |
| parse_signature (jcf, sig_index) |
| JCF *jcf; |
| int sig_index; |
| { |
| if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf) |
| || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8) |
| abort (); |
| else |
| return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index), |
| JPOOL_UTF_LENGTH (jcf, sig_index)); |
| } |
| |
| void |
| java_set_yydebug (value) |
| int value; |
| { |
| yydebug = value; |
| } |
| |
| tree |
| get_constant (jcf, index) |
| JCF *jcf; |
| int index; |
| { |
| tree value; |
| int tag; |
| if (index <= 0 || index >= JPOOL_SIZE(jcf)) |
| goto bad; |
| tag = JPOOL_TAG (jcf, index); |
| if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8) |
| return (tree) jcf->cpool.data[index]; |
| switch (tag) |
| { |
| case CONSTANT_Integer: |
| { |
| jint num = JPOOL_INT(jcf, index); |
| value = build_int_2 (num, num < 0 ? -1 : 0); |
| TREE_TYPE (value) = int_type_node; |
| break; |
| } |
| case CONSTANT_Long: |
| { |
| jint num = JPOOL_INT (jcf, index); |
| HOST_WIDE_INT lo, hi; |
| lshift_double (num, 0, 32, 64, &lo, &hi, 0); |
| num = JPOOL_INT (jcf, index+1) & 0xffffffff; |
| add_double (lo, hi, num, 0, &lo, &hi); |
| value = build_int_2 (lo, hi); |
| TREE_TYPE (value) = long_type_node; |
| force_fit_type (value, 0); |
| break; |
| } |
| #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT |
| case CONSTANT_Float: |
| { |
| jint num = JPOOL_INT(jcf, index); |
| REAL_VALUE_TYPE d; |
| #ifdef REAL_ARITHMETIC |
| d = REAL_VALUE_FROM_TARGET_SINGLE (num); |
| #else |
| union { float f; jint i; } u; |
| u.i = num; |
| d = u.f; |
| #endif |
| value = build_real (float_type_node, d); |
| break; |
| } |
| case CONSTANT_Double: |
| { |
| HOST_WIDE_INT num[2]; |
| REAL_VALUE_TYPE d; |
| HOST_WIDE_INT lo, hi; |
| num[0] = JPOOL_INT (jcf, index); |
| lshift_double (num[0], 0, 32, 64, &lo, &hi, 0); |
| num[0] = JPOOL_INT (jcf, index+1); |
| add_double (lo, hi, num[0], 0, &lo, &hi); |
| if (FLOAT_WORDS_BIG_ENDIAN) |
| { |
| num[0] = hi; |
| num[1] = lo; |
| } |
| else |
| { |
| num[0] = lo; |
| num[1] = hi; |
| } |
| #ifdef REAL_ARITHMETIC |
| d = REAL_VALUE_FROM_TARGET_DOUBLE (num); |
| #else |
| { |
| union { double d; jint i[2]; } u; |
| u.i[0] = (jint) num[0]; |
| u.i[1] = (jint) num[1]; |
| d = u.d; |
| } |
| #endif |
| value = build_real (double_type_node, d); |
| break; |
| } |
| #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */ |
| case CONSTANT_String: |
| { |
| tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); |
| const char *utf8_ptr = IDENTIFIER_POINTER (name); |
| int utf8_len = IDENTIFIER_LENGTH (name); |
| unsigned char *str_ptr; |
| unsigned char *str; |
| const unsigned char *utf8; |
| int i, str_len; |
| |
| /* Count the number of Unicode characters in the string, |
| while checking for a malformed Utf8 string. */ |
| utf8 = (const unsigned char *) utf8_ptr; |
| i = utf8_len; |
| str_len = 0; |
| while (i > 0) |
| { |
| int char_len = UT8_CHAR_LENGTH (*utf8); |
| if (char_len < 0 || char_len > 3 || char_len > i) |
| fatal_error ("bad string constant"); |
| |
| utf8 += char_len; |
| i -= char_len; |
| str_len++; |
| } |
| |
| /* Allocate a scratch buffer, convert the string to UCS2, and copy it |
| into the new space. */ |
| str_ptr = (unsigned char *) alloca (2 * str_len); |
| str = str_ptr; |
| utf8 = (const unsigned char *)utf8_ptr; |
| |
| for (i = 0; i < str_len; i++) |
| { |
| int char_value; |
| int char_len = UT8_CHAR_LENGTH (*utf8); |
| switch (char_len) |
| { |
| case 1: |
| char_value = *utf8++; |
| break; |
| case 2: |
| char_value = *utf8++ & 0x1F; |
| char_value = (char_value << 6) | (*utf8++ & 0x3F); |
| break; |
| case 3: |
| char_value = *utf8++ & 0x0F; |
| char_value = (char_value << 6) | (*utf8++ & 0x3F); |
| char_value = (char_value << 6) | (*utf8++ & 0x3F); |
| break; |
| default: |
| goto bad; |
| } |
| if (BYTES_BIG_ENDIAN) |
| { |
| *str++ = char_value >> 8; |
| *str++ = char_value & 0xFF; |
| } |
| else |
| { |
| *str++ = char_value & 0xFF; |
| *str++ = char_value >> 8; |
| } |
| } |
| value = build_string (str - str_ptr, str_ptr); |
| TREE_TYPE (value) = build_pointer_type (string_type_node); |
| } |
| break; |
| default: |
| goto bad; |
| } |
| JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag; |
| jcf->cpool.data [index] = (jword) value; |
| return value; |
| bad: |
| internal_error ("bad value constant type %d, index %d", |
| JPOOL_TAG (jcf, index), index); |
| } |
| |
| tree |
| get_name_constant (jcf, index) |
| JCF *jcf; |
| int index; |
| { |
| tree name = get_constant (jcf, index); |
| |
| if (TREE_CODE (name) != IDENTIFIER_NODE) |
| abort (); |
| |
| return name; |
| } |
| |
| /* Handle reading innerclass attributes. If a non zero entry (denoting |
| a non anonymous entry) is found, We augment the inner class list of |
| the outer context with the newly resolved innerclass. */ |
| |
| static void |
| handle_innerclass_attribute (count, jcf) |
| int count; |
| JCF *jcf; |
| { |
| int c = (count); |
| while (c--) |
| { |
| /* Read inner_class_info_index. This may be 0 */ |
| int icii = JCF_readu2 (jcf); |
| /* Read outer_class_info_index. If the innerclasses attribute |
| entry isn't a member (like an inner class) the value is 0. */ |
| int ocii = JCF_readu2 (jcf); |
| /* Read inner_name_index. If the class we're dealing with is |
| an annonymous class, it must be 0. */ |
| int ini = JCF_readu2 (jcf); |
| /* Read the access flag. */ |
| int acc = JCF_readu2 (jcf); |
| /* If icii is 0, don't try to read the class. */ |
| if (icii >= 0) |
| { |
| tree class = get_class_constant (jcf, icii); |
| tree decl = TYPE_NAME (class); |
| /* Skip reading further if ocii is null */ |
| if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii) |
| { |
| tree outer = TYPE_NAME (get_class_constant (jcf, ocii)); |
| tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE); |
| set_class_decl_access_flags (acc, decl); |
| DECL_CONTEXT (decl) = outer; |
| DECL_INNER_CLASS_LIST (outer) = |
| tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer)); |
| CLASS_COMPLETE_P (decl) = 1; |
| } |
| } |
| } |
| } |
| |
| static tree |
| give_name_to_class (jcf, i) |
| JCF *jcf; |
| int i; |
| { |
| if (i <= 0 || i >= JPOOL_SIZE (jcf) |
| || JPOOL_TAG (jcf, i) != CONSTANT_Class) |
| abort (); |
| else |
| { |
| tree this_class; |
| int j = JPOOL_USHORT1 (jcf, i); |
| /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */ |
| tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j), |
| JPOOL_UTF_LENGTH (jcf, j)); |
| this_class = lookup_class (class_name); |
| input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class)); |
| lineno = 0; |
| if (main_input_filename == NULL && jcf == main_jcf) |
| main_input_filename = input_filename; |
| |
| jcf->cpool.data[i] = (jword) this_class; |
| JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass; |
| return this_class; |
| } |
| } |
| |
| /* Get the class of the CONSTANT_Class whose constant pool index is I. */ |
| |
| tree |
| get_class_constant (JCF *jcf , int i) |
| { |
| tree type; |
| if (i <= 0 || i >= JPOOL_SIZE (jcf) |
| || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class) |
| abort (); |
| |
| if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass) |
| { |
| int name_index = JPOOL_USHORT1 (jcf, i); |
| /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */ |
| const char *name = JPOOL_UTF_DATA (jcf, name_index); |
| int nlength = JPOOL_UTF_LENGTH (jcf, name_index); |
| |
| if (name[0] == '[') /* Handle array "classes". */ |
| type = TREE_TYPE (parse_signature_string (name, nlength)); |
| else |
| { |
| tree cname = unmangle_classname (name, nlength); |
| type = lookup_class (cname); |
| } |
| jcf->cpool.data[i] = (jword) type; |
| JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass; |
| } |
| else |
| type = (tree) jcf->cpool.data[i]; |
| return type; |
| } |
| |
| /* Read a class with the fully qualified-name NAME. |
| Return 1 iff we read the requested file. |
| (It is still possible we failed if the file did not |
| define the class it is supposed to.) */ |
| |
| int |
| read_class (name) |
| tree name; |
| { |
| JCF this_jcf, *jcf; |
| tree icv, class = NULL_TREE; |
| tree save_current_class = current_class; |
| const char *save_input_filename = input_filename; |
| 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 file; |
| FILE *finput; |
| int generate; |
| |
| java_parser_context_save_global (); |
| java_push_parser_context (); |
| BUILD_FILENAME_IDENTIFIER_NODE (file, filename); |
| generate = IS_A_COMMAND_LINE_FILENAME_P (file); |
| if (wfl_operator == NULL_TREE) |
| wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0); |
| EXPR_WFL_FILENAME_NODE (wfl_operator) = file; |
| input_filename = ggc_strdup (filename); |
| current_class = NULL_TREE; |
| current_function_decl = NULL_TREE; |
| if (!HAS_BEEN_ALREADY_PARSED_P (file)) |
| { |
| if (!(finput = fopen (input_filename, "r"))) |
| fatal_io_error ("can't reopen %s", input_filename); |
| parse_source_file_1 (file, finput); |
| parse_source_file_2 (); |
| if (fclose (finput)) |
| fatal_io_error ("can't close %s", 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 (); |
| 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); |
| class = current_class; |
| java_pop_parser_context (0); |
| java_parser_context_restore_global (); |
| } |
| layout_class (class); |
| load_inner_classes (class); |
| } |
| |
| current_class = save_current_class; |
| input_filename = save_input_filename; |
| 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. */ |
| |
| /* Replace calls to load_class by having callers call read_class directly |
| - and then perhaps rename read_class to load_class. FIXME */ |
| |
| void |
| load_class (class_or_name, verbose) |
| 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 |
| name = DECL_NAME (TYPE_NAME (class_or_name)); |
| |
| saved = name; |
| while (1) |
| { |
| char *dollar; |
| |
| if ((class_loaded = read_class (name))) |
| break; |
| |
| /* We failed loading name. Now consider that we might be looking |
| for a inner class but it's only available in source for in |
| its enclosing context. */ |
| if ((dollar = strrchr (IDENTIFIER_POINTER (name), '$'))) |
| { |
| int c = *dollar; |
| *dollar = '\0'; |
| name = get_identifier (IDENTIFIER_POINTER (name)); |
| *dollar = 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. */ |
| |
| void |
| jcf_parse (jcf) |
| 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 (cur_class) |
| 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); |
| } |
| } |
| |
| void |
| init_outgoing_cpool () |
| { |
| current_constant_pool_data_ref = NULL_TREE; |
| outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool)); |
| memset (outgoing_cpool, 0, sizeof (struct CPool)); |
| } |
| |
| static void |
| parse_class_file () |
| { |
| tree method; |
| const char *save_input_filename = input_filename; |
| int save_lineno = lineno; |
| |
| java_layout_seen_class_methods (); |
| |
| input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class)); |
| lineno = 0; |
| (*debug_hooks->start_source_file) (lineno, input_filename); |
| init_outgoing_cpool (); |
| |
| /* Currently we always have to emit calls to _Jv_InitClass when |
| compiling from class files. */ |
| always_initialize_class_p = 1; |
| |
| for ( method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (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); |
| expand_expr_stmt (build_jni_stub (method)); |
| end_java_method (); |
| continue; |
| } |
| |
| if (DECL_CODE_OFFSET (method) == 0) |
| { |
| current_function_decl = method; |
| error ("missing Code attribute"); |
| continue; |
| } |
| |
| lineno = 0; |
| if (DECL_LINENUMBERS_OFFSET (method)) |
| { |
| register int i; |
| register 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 lineno lineno to smallest linenumber. |
| * Needs to be set before init_function_start. */ |
| if (lineno == 0 || line < lineno) |
| lineno = line; |
| } |
| } |
| else |
| { |
| linenumber_table = NULL; |
| linenumber_count = 0; |
| } |
| |
| start_java_method (method); |
| |
| note_instructions (jcf, method); |
| |
| give_name_to_locals (jcf); |
| |
| /* Actually generate code. */ |
| 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_lineno); |
| input_filename = save_input_filename; |
| lineno = save_lineno; |
| } |
| |
| /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */ |
| |
| static void |
| parse_source_file_1 (file, finput) |
| tree file; |
| FILE *finput; |
| { |
| int save_error_count = java_error_count; |
| /* Mark the file as parsed */ |
| HAS_BEEN_ALREADY_PARSED_P (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. */ |
| #ifdef HAVE_ICONV |
| #ifdef HAVE_NL_LANGINFO |
| setlocale (LC_CTYPE, ""); |
| if (current_encoding == NULL) |
| current_encoding = nl_langinfo (CODESET); |
| #endif /* HAVE_NL_LANGINFO */ |
| #endif /* HAVE_ICONV */ |
| 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 () |
| { |
| int save_error_count = java_error_count; |
| java_complete_class (); /* Parse unsatisfied class decl. */ |
| java_parse_abort_on_error (); |
| 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 */ |
| } |
| |
| static int |
| predefined_filename_p (node) |
| tree node; |
| { |
| int i; |
| for (i = 0; i < PREDEF_FILENAMES_SIZE; i++) |
| if (predef_filenames [i] == node) |
| return 1; |
| return 0; |
| } |
| |
| int |
| yyparse () |
| { |
| 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_io_error ("can't open %s", 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_io_error ("error closing %s", input_filename); |
| *next = '\0'; |
| break; |
| } |
| avail -= count; |
| next += count; |
| } |
| fclose (finput); |
| finput = NULL; |
| } |
| else |
| list = xstrdup (input_filename); |
| |
| do |
| { |
| 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); |
| |
| if (*list != '/' && filename_count > 0) |
| obstack_grow (&temporary_obstack, "./", 2); |
| |
| 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) |
| { |
| const char *saved_input_filename = input_filename; |
| input_filename = value; |
| warning ("source file seen twice on command line and will be compiled only once"); |
| input_filename = saved_input_filename; |
| } |
| 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; |
| } |
| while (next); |
| |
| if (filename_count == 0) |
| warning ("no input file specified"); |
| |
| if (resource_name) |
| { |
| 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); |
| |
| java_expand_classes (); |
| if (!java_report_errors ()) |
| emit_register_classes (); |
| return 0; |
| } |
| |
| 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); |
| |
| /* Skip already parsed files */ |
| if (HAS_BEEN_ALREADY_PARSED_P (name)) |
| continue; |
| |
| /* Close previous descriptor, if any */ |
| if (finput && fclose (finput)) |
| fatal_io_error ("can't close input file %s", main_input_filename); |
| |
| finput = fopen (IDENTIFIER_POINTER (name), "rb"); |
| if (finput == NULL) |
| fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name)); |
| |
| #ifdef IO_BUFFER_SIZE |
| setvbuf (finput, (char *) 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 = 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; |
| 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 class 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 (name, 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 (node = current_file_list; node; node = TREE_CHAIN (node)) |
| { |
| input_filename = IDENTIFIER_POINTER (TREE_VALUE (node)); |
| if (CLASS_FILE_P (node)) |
| { |
| 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) |
| { |
| emit_register_classes (); |
| if (flag_indirect_dispatch) |
| emit_offset_symbol_table (); |
| } |
| return 0; |
| } |
| |
| /* 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; |
| |
| /* We don't need to consider those files. */ |
| if (!zdir->size || !zdir->filename_offset) |
| continue; |
| |
| class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir))); |
| current_jcf = TYPE_JCF (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. */ |
| } |
| } |
| } |
| |
| /* 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; |
| int j; |
| |
| class_name_in_zip_dir = ZIPDIR_FILENAME (zdir); |
| |
| /* We choose to not to process entries with a zero size or entries |
| not bearing the .class extension. */ |
| if (!zdir->size || !zdir->filename_offset || |
| strncmp (&class_name_in_zip_dir[zdir->filename_length-6], |
| ".class", 6)) |
| { |
| /* So it will be skipped in parse_zip_file_entries */ |
| zdir->size = 0; |
| continue; |
| } |
| |
| class_name = ALLOC (zdir->filename_length+1-6); |
| file_name = ALLOC (zdir->filename_length+1); |
| jcf = ALLOC (sizeof (JCF)); |
| JCF_ZERO (jcf); |
| |
| strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6); |
| class_name [zdir->filename_length-6] = '\0'; |
| strncpy (file_name, class_name_in_zip_dir, zdir->filename_length); |
| file_name [zdir->filename_length] = '\0'; |
| |
| for (j=0; class_name[j]; j++) |
| class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]); |
| |
| /* Yes, we write back the true class name into the zip directory. */ |
| strcpy (class_name_in_zip_dir, class_name); |
| zdir->filename_length = j; |
| 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 () |
| { |
| /* Register roots with the garbage collector. */ |
| ggc_add_tree_root (parse_roots, sizeof (parse_roots) / sizeof(tree)); |
| |
| ggc_add_root (¤t_jcf, 1, sizeof (JCF), (void (*)(void *))ggc_mark_jcf); |
| |
| init_src_parse (); |
| } |