/* Java(TM) language-specific utility routines. Copyright (C) 1996, 97-98, 1999 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. */ /* Hacked by Per Bothner February 1996. */ #include "config.h" #include "system.h" #include "tree.h" #include "input.h" #include "java-tree.h" #include "jcf.h" #include "toplev.h" #include "flags.h" #include "xref.h" #ifndef OBJECT_SUFFIX # define OBJECT_SUFFIX ".o" #endif /* Table indexed by tree code giving a string containing a character classifying the tree code. Possibilities are t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */ #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE, char java_tree_code_type[] = { 'x', #include "java-tree.def" }; #undef DEFTREECODE /* Table indexed by tree code giving number of expression operands beyond the fixed part of the node structure. Not used for types or decls. */ #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH, int java_tree_code_length[] = { 0, #include "java-tree.def" }; #undef DEFTREECODE /* Names of tree components. Used for printing out the tree and error messages. */ #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME, const char *java_tree_code_name[] = { "@@dummy", #include "java-tree.def" }; #undef DEFTREECODE int compiling_from_source; char *language_string = "GNU Java"; /* Nonzero if we want to automatically do array bounds checking; on by default. Use -fno-bounds-check to disable. */ int flag_bounds_check = 1; /* Nonzero if we should make is_compiled_class always return 1 for appropriate classes that we're referencing. */ int flag_assume_compiled = 1; int flag_emit_class_files = 0; /* When non zero, we emit xref strings. Values of the flag for xref backends are defined in xref_flag_table, xref.c. */ int flag_emit_xref = 0; /* When non zero, -Wall was turned on. */ int flag_wall = 0; /* When non zero, check for redundant modifier uses. */ int flag_redundant = 0; /* When non zero, warns about overridings that don't occur. */ int flag_not_overriding = 0; /* When non zero, warns that final local are treated as non final. */ int flag_static_local_jdk1_1 = 0; /* From gcc/flags.h, and indicates if exceptions are turned on or not. */ extern int flag_new_exceptions; extern int flag_exceptions; /* Table of language-dependent -f options. STRING is the option name. VARIABLE is the address of the variable. ON_VALUE is the value to store in VARIABLE if `-fSTRING' is seen as an option. (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ static struct { const char *string; int *variable; int on_value;} lang_f_options[] = { {"bounds-check", &flag_bounds_check, 1}, {"assume-compiled", &flag_assume_compiled, 1}, {"emit-class-file", &flag_emit_class_files, 1}, {"emit-class-files", &flag_emit_class_files, 1}, }; JCF *current_jcf; /* Variable controlling how dependency tracking is enabled in init_parse. */ static int dependency_tracking = 0; /* Flag values for DEPENDENCY_TRACKING. */ #define DEPEND_SET_FILE 1 #define DEPEND_ENABLE 2 /* * process java-specific compiler command-line options */ int lang_decode_option (argc, argv) int argc __attribute__ ((__unused__)); char **argv; { char *p = argv[0]; #define CLARG "-fclasspath=" if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0) { jcf_path_classpath_arg (p + sizeof (CLARG) - 1); return 1; } #undef CLARG #define CLARG "-fCLASSPATH=" else if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0) { jcf_path_CLASSPATH_arg (p + sizeof (CLARG) - 1); return 1; } #undef CLARG else if (strncmp (p, "-I", 2) == 0) { jcf_path_include_arg (p + 2); return 1; } #define ARG "-foutput-class-dir=" if (strncmp (p, ARG, sizeof (ARG) - 1) == 0) { jcf_write_base_directory = p + sizeof (ARG) - 1; return 1; } #undef ARG #define XARG "-fxref=" if (strncmp (p, XARG, sizeof (XARG) - 1) == 0) { if (!(flag_emit_xref = xref_flag_value (p + sizeof (XARG) - 1))) error ("Unkown xref format `%s'", p + sizeof (XARG) - 1); else return 1; } #undef XARG if (p[0] == '-' && p[1] == 'f') { /* Some kind of -f option. P's value is the option sans `-f'. Search for it in the table of options. */ int found = 0, j; p += 2; for (j = 0; !found && j < (int)(sizeof (lang_f_options) / sizeof (lang_f_options[0])); j++) { if (!strcmp (p, lang_f_options[j].string)) { *lang_f_options[j].variable = lang_f_options[j].on_value; /* A goto here would be cleaner, but breaks the vax pcc. */ found = 1; } if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' && ! strcmp (p+3, lang_f_options[j].string)) { *lang_f_options[j].variable = ! lang_f_options[j].on_value; found = 1; } } return found; } if (strcmp (p, "-Wall") == 0) { flag_wall = 1; flag_redundant = 1; return 1; } if (strcmp (p, "-Wunsupported-jdk11") == 0) { flag_static_local_jdk1_1 = 1; return 1; } if (strcmp (p, "-Wredundant-modifiers") == 0) { flag_redundant = 1; return 1; } if (strcmp (p, "-MD") == 0) { jcf_dependency_init (1); dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE; return 1; } else if (strcmp (p, "-MMD") == 0) { jcf_dependency_init (0); dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE; return 1; } else if (strcmp (p, "-M") == 0) { jcf_dependency_init (1); dependency_tracking |= DEPEND_ENABLE; return 1; } else if (strcmp (p, "-MM") == 0) { jcf_dependency_init (0); dependency_tracking |= DEPEND_ENABLE; return 1; } return 0; } FILE *finput; char * init_parse (filename) char *filename; { /* Open input file. */ if (filename == 0 || !strcmp (filename, "-")) { finput = stdin; filename = "stdin"; if (dependency_tracking) error ("can't do dependency tracking with input from stdin"); } else { if (dependency_tracking) { char *dot; dot = strrchr (filename, '.'); if (dot == NULL) error ("couldn't determine target name for dependency tracking"); else { char *buf = (char *) xmalloc (dot - filename + 3 + sizeof (OBJECT_SUFFIX)); strncpy (buf, filename, dot - filename); /* If emitting class files, we might have multiple targets. The class generation code takes care of registering them. Otherwise we compute the target name here. */ if (flag_emit_class_files) jcf_dependency_set_target (NULL); else { strcpy (buf + (dot - filename), OBJECT_SUFFIX); jcf_dependency_set_target (buf); } if ((dependency_tracking & DEPEND_SET_FILE)) { strcpy (buf + (dot - filename), ".d"); jcf_dependency_set_dep_file (buf); } else jcf_dependency_set_dep_file ("-"); free (buf); } } } init_lex (); return filename; } void finish_parse () { fclose (finput); jcf_dependency_write (); } /* Buffer used by lang_printable_name. */ static char *decl_buf = NULL; /* Allocated size of decl_buf. */ static int decl_buflen = 0; /* Length of used part of decl_buf; position for next character. */ static int decl_bufpos = 0; /* Append the string STR to decl_buf. It length is given by LEN; -1 means the string is nul-terminated. */ static void put_decl_string (str, len) char *str; int len; { if (len < 0) len = strlen (str); if (decl_bufpos + len >= decl_buflen) { if (decl_buf == NULL) { decl_buflen = len + 100; decl_buf = (char *) xmalloc (decl_buflen); } else { decl_buflen *= 2; decl_buf = (char *) xrealloc (decl_buf, decl_buflen); } } strcpy (decl_buf + decl_bufpos, str); decl_bufpos += len; } /* Append to decl_buf a printable name for NODE. */ static void put_decl_node (node) tree node; { int was_pointer = 0; if (TREE_CODE (node) == POINTER_TYPE) { node = TREE_TYPE (node); was_pointer = 1; } if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd' && DECL_NAME (node) != NULL_TREE) { #if 0 if (DECL_CONTEXT (node) != NULL_TREE) { put_decl_node (DECL_CONTEXT (node)); put_decl_string (".", 1); } #endif if (TREE_CODE (node) == FUNCTION_DECL && DECL_NAME (node) == init_identifier_node && !DECL_ARTIFICIAL (node) && current_class) put_decl_node (TYPE_NAME (current_class)); else put_decl_node (DECL_NAME (node)); if (TREE_CODE (node) == FUNCTION_DECL && TREE_TYPE (node) != NULL_TREE) { int i = 0; tree args = TYPE_ARG_TYPES (TREE_TYPE (node)); if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE) args = TREE_CHAIN (args); put_decl_string ("(", 1); for ( ; args != end_params_node; args = TREE_CHAIN (args), i++) { if (i > 0) put_decl_string (",", 1); put_decl_node (TREE_VALUE (args)); } put_decl_string (")", 1); } } else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't' && TYPE_NAME (node) != NULL_TREE) { if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node)) { put_decl_node (TYPE_ARRAY_ELEMENT (node)); put_decl_string("[]", 2); } else if (node == promoted_byte_type_node) put_decl_string ("byte", 4); else if (node == promoted_short_type_node) put_decl_string ("short", 5); else if (node == promoted_char_type_node) put_decl_string ("char", 4); else if (node == promoted_boolean_type_node) put_decl_string ("boolean", 7); else if (node == void_type_node && was_pointer) put_decl_string ("null", 4); else put_decl_node (TYPE_NAME (node)); } else if (TREE_CODE (node) == IDENTIFIER_NODE) put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node)); else put_decl_string ("", -1); } /* Return a user-friendly name for DECL. The resulting string is only valid until the next call. The value of the hook decl_printable_name is this function, which is also called directly by lang_print_error. */ char * lang_printable_name (decl, v) tree decl; int v __attribute__ ((__unused__)); { decl_bufpos = 0; put_decl_node (decl); put_decl_string ("", 1); return decl_buf; } /* Print on stderr the current class and method context. This function is the value of the hook print_error_function, called from toplev.c. */ void lang_print_error (file) char *file; { static tree last_error_function_context = NULL_TREE; static tree last_error_function = NULL; if (current_function_decl != NULL && DECL_CONTEXT (current_function_decl) != last_error_function_context) { if (file) fprintf (stderr, "%s: ", file); last_error_function_context = DECL_CONTEXT (current_function_decl); fprintf (stderr, "In class `%s':\n", lang_printable_name (last_error_function_context, 0)); } if (last_error_function != current_function_decl) { if (file) fprintf (stderr, "%s: ", file); if (current_function_decl == NULL) fprintf (stderr, "At top level:\n"); else { char *name = lang_printable_name (current_function_decl, 2); fprintf (stderr, "In method `%s':\n", name); } last_error_function = current_function_decl; } } void lang_init () { extern struct rtx_def * java_lang_expand_expr (); extern struct rtx_def * (*lang_expand_expr) (); extern void (*print_error_function) PROTO((char *)); #if 0 extern int flag_minimal_debug; flag_minimal_debug = 0; #endif jcf_path_init (); jcf_path_seal (); decl_printable_name = lang_printable_name; print_error_function = lang_print_error; lang_expand_expr = java_lang_expand_expr; flag_exceptions = 1; /* Append to Gcc tree node definition arrays */ bcopy (java_tree_code_type, tree_code_type + (int) LAST_AND_UNUSED_TREE_CODE, (int)LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE); bcopy ((char *)java_tree_code_length, (char *)(tree_code_length + (int) LAST_AND_UNUSED_TREE_CODE), (LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (int)); bcopy ((char *)java_tree_code_name, (char *)(tree_code_name + (int) LAST_AND_UNUSED_TREE_CODE), (LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (char *)); using_eh_for_cleanups (); } /* This doesn't do anything on purpose. It's used to satisfy the print_error_function hook we don't print error messages with bogus function prototypes. */ void java_dummy_print (s) char *s __attribute__ ((__unused__)); { } /* Called to install the PRINT_ERROR_FUNCTION hook differently according to LEVEL. LEVEL is 1 during early parsing, when function prototypes aren't fully resolved. print_error_function is set so it doesn't print incomplete function prototypes. When LEVEL is 2, function prototypes are fully resolved and can be printed when reporting errors. */ void lang_init_source (level) int level; { extern void (*print_error_function) PROTO((char *)); if (level == 1) print_error_function = java_dummy_print; else print_error_function = lang_print_error; } void lang_init_options () { flag_new_exceptions = 1; } void lang_finish () { } char* lang_identify () { return "Java"; } /* Hooks for print_node. */ void print_lang_decl (file, node, indent) FILE *file __attribute ((__unused__)); tree node __attribute ((__unused__)); int indent __attribute ((__unused__)); { } void print_lang_type (file, node, indent) FILE *file __attribute ((__unused__)); tree node __attribute ((__unused__)); int indent __attribute ((__unused__)); { } void print_lang_identifier (file, node, indent) FILE *file __attribute ((__unused__)); tree node __attribute ((__unused__)); int indent __attribute ((__unused__)); { } void print_lang_statistics () { } /* used by print-tree.c */ void lang_print_xnode (file, node, indent) FILE *file __attribute ((__unused__)); tree node __attribute ((__unused__)); int indent __attribute ((__unused__)); { }