/********************************************************************** error.c - $Author$ created at: Mon Aug 9 16:11:34 JST 1993 Copyright (C) 1993-2007 Yukihiro Matsumoto **********************************************************************/ #include "internal.h" #include "ruby/st.h" #include "ruby_assert.h" #include "vm_core.h" #include <stdio.h> #include <stdarg.h> #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif #include <errno.h> #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifndef EXIT_SUCCESS #define EXIT_SUCCESS 0 #endif #ifndef WIFEXITED #define WIFEXITED(status) 1 #endif #ifndef WEXITSTATUS #define WEXITSTATUS(status) (status) #endif VALUE rb_iseqw_local_variables(VALUE iseqval); VALUE rb_iseqw_new(const rb_iseq_t *); VALUE rb_eEAGAIN; VALUE rb_eEWOULDBLOCK; VALUE rb_eEINPROGRESS; extern const char ruby_description[]; static const char REPORTBUG_MSG[] = "[NOTE]\n" \ "You may have encountered a bug in the Ruby interpreter" \ " or extension libraries.\n" \ "Bug reports are welcome.\n" \ "" "For details: http://www.ruby-lang.org/bugreport.html\n\n" \ ; static const char * rb_strerrno(int err) { #define defined_error(name, num) if (err == (num)) return (name); #define undefined_error(name) #include "known_errors.inc" #undef defined_error #undef undefined_error return NULL; } static int err_position_0(char *buf, long len, const char *file, int line) { if (!file) { return 0; } else if (line == 0) { return snprintf(buf, len, "%s: ", file); } else { return snprintf(buf, len, "%s:%d: ", file, line); } } static VALUE compile_snprintf(rb_encoding *enc, const char *pre, const char *file, int line, const char *fmt, va_list args) { VALUE str = rb_enc_str_new(0, 0, enc); if (file) { rb_str_cat2(str, file); if (line) rb_str_catf(str, ":%d", line); rb_str_cat2(str, ": "); } if (pre) rb_str_cat2(str, pre); rb_str_vcatf(str, fmt, args); return str; } static void compile_err_append(VALUE mesg) { rb_thread_t *th = GET_THREAD(); VALUE err = th->errinfo; rb_block_t *prev_base_block = th->base_block; th->base_block = 0; /* base_block should be zero while normal Ruby execution */ /* after this line, any Ruby code *can* run */ if (th->mild_compile_error) { if (RTEST(err)) { VALUE str = rb_obj_as_string(err); rb_str_cat2(str, "\n"); rb_str_append(str, mesg); mesg = str; } err = rb_exc_new3(rb_eSyntaxError, mesg); th->errinfo = err; } else { if (!RTEST(err)) { err = rb_exc_new2(rb_eSyntaxError, "compile error"); th->errinfo = err; } rb_str_cat2(mesg, "\n"); rb_write_error_str(mesg); } /* returned to the parser world */ th->base_block = prev_base_block; } void rb_compile_error_with_enc(const char *file, int line, void *enc, const char *fmt, ...) { va_list args; VALUE str; va_start(args, fmt); str = compile_snprintf(enc, NULL, file, line, fmt, args); va_end(args); compile_err_append(str); } void rb_compile_error(const char *file, int line, const char *fmt, ...) { va_list args; VALUE str; va_start(args, fmt); str = compile_snprintf(NULL, NULL, file, line, fmt, args); va_end(args); compile_err_append(str); } void rb_compile_error_str(VALUE file, int line, void *enc, const char *fmt, ...) { va_list args; VALUE str; va_start(args, fmt); str = compile_snprintf(enc, NULL, NIL_P(file) ? NULL : RSTRING_PTR(file), line, fmt, args); va_end(args); compile_err_append(str); } void rb_compile_error_append(const char *fmt, ...) { va_list args; VALUE str; va_start(args, fmt); str = rb_vsprintf(fmt, args); va_end(args); compile_err_append(str); } static void compile_warn_print(const char *file, int line, const char *fmt, va_list args) { VALUE str; str = compile_snprintf(NULL, "warning: ", file, line, fmt, args); rb_str_cat2(str, "\n"); rb_write_error_str(str); } void rb_compile_warn(const char *file, int line, const char *fmt, ...) { va_list args; if (NIL_P(ruby_verbose)) return; va_start(args, fmt); compile_warn_print(file, line, fmt, args); va_end(args); } /* rb_compile_warning() reports only in verbose mode */ void rb_compile_warning(const char *file, int line, const char *fmt, ...) { va_list args; if (!RTEST(ruby_verbose)) return; va_start(args, fmt); compile_warn_print(file, line, fmt, args); va_end(args); } static VALUE warning_string(rb_encoding *enc, const char *fmt, va_list args) { VALUE str = rb_enc_str_new(0, 0, enc); int line; VALUE file = rb_source_location(&line); if (!NIL_P(file)) { str = rb_str_append(str, file); if (line) rb_str_catf(str, ":%d", line); rb_str_cat2(str, ": "); } rb_str_cat2(str, "warning: "); rb_str_vcatf(str, fmt, args); rb_str_cat2(str, "\n"); return str; } void rb_warn(const char *fmt, ...) { VALUE mesg; va_list args; if (NIL_P(ruby_verbose)) return; va_start(args, fmt); mesg = warning_string(0, fmt, args); va_end(args); rb_write_error_str(mesg); } void rb_enc_warn(rb_encoding *enc, const char *fmt, ...) { VALUE mesg; va_list args; if (NIL_P(ruby_verbose)) return; va_start(args, fmt); mesg = warning_string(enc, fmt, args); va_end(args); rb_write_error_str(mesg); } /* rb_warning() reports only in verbose mode */ void rb_warning(const char *fmt, ...) { VALUE mesg; va_list args; if (!RTEST(ruby_verbose)) return; va_start(args, fmt); mesg = warning_string(0, fmt, args); va_end(args); rb_write_error_str(mesg); } #if 0 void rb_enc_warning(rb_encoding *enc, const char *fmt, ...) { VALUE mesg; va_list args; if (!RTEST(ruby_verbose)) return; va_start(args, fmt); mesg = warning_string(enc, fmt, args); va_end(args); rb_write_error_str(mesg); } #endif /* * call-seq: * warn(msg, ...) -> nil * * Displays each of the given messages followed by a record separator on * STDERR unless warnings have been disabled (for example with the * <code>-W0</code> flag). * * warn("warning 1", "warning 2") * * <em>produces:</em> * * warning 1 * warning 2 */ static VALUE rb_warn_m(int argc, VALUE *argv, VALUE exc) { if (!NIL_P(ruby_verbose) && argc > 0) { rb_io_puts(argc, argv, rb_stderr); } return Qnil; } #define MAX_BUG_REPORTERS 0x100 static struct bug_reporters { void (*func)(FILE *out, void *data); void *data; } bug_reporters[MAX_BUG_REPORTERS]; static int bug_reporters_size; int rb_bug_reporter_add(void (*func)(FILE *, void *), void *data) { struct bug_reporters *reporter; if (bug_reporters_size >= MAX_BUG_REPORTERS) { return 0; /* failed to register */ } reporter = &bug_reporters[bug_reporters_size++]; reporter->func = func; reporter->data = data; return 1; } /* SIGSEGV handler might have a very small stack. Thus we need to use it carefully. */ #define REPORT_BUG_BUFSIZ 256 static FILE * bug_report_file(const char *file, int line) { char buf[REPORT_BUG_BUFSIZ]; FILE *out = stderr; int len = err_position_0(buf, sizeof(buf), file, line); if ((ssize_t)fwrite(buf, 1, len, out) == (ssize_t)len || (ssize_t)fwrite(buf, 1, len, (out = stdout)) == (ssize_t)len) { return out; } return NULL; } static void bug_report_begin(FILE *out, const char *fmt, va_list args) { char buf[REPORT_BUG_BUFSIZ]; fputs("[BUG] ", out); vsnprintf(buf, sizeof(buf), fmt, args); fputs(buf, out); snprintf(buf, sizeof(buf), "\n%s\n\n", ruby_description); fputs(buf, out); } #define bug_report_begin(out, fmt) do { \ va_list args; \ va_start(args, fmt); \ bug_report_begin(out, fmt, args); \ va_end(args); \ } while (0) static void bug_report_end(FILE *out) { /* call additional bug reporters */ { int i; for (i=0; i<bug_reporters_size; i++) { struct bug_reporters *reporter = &bug_reporters[i]; (*reporter->func)(out, reporter->data); } } fprintf(out, REPORTBUG_MSG); } #define report_bug(file, line, fmt, ctx) do { \ FILE *out = bug_report_file(file, line); \ if (out) { \ bug_report_begin(out, fmt); \ rb_vm_bugreport(ctx); \ bug_report_end(out); \ } \ } while (0) \ NORETURN(static void die(void)); static void die(void) { #if defined(_WIN32) && defined(RUBY_MSVCRT_VERSION) && RUBY_MSVCRT_VERSION >= 80 _set_abort_behavior( 0, _CALL_REPORTFAULT); #endif abort(); } void rb_bug(const char *fmt, ...) { const char *file = NULL; int line = 0; if (GET_THREAD()) { file = rb_source_loc(&line); } report_bug(file, line, fmt, NULL); die(); } void rb_bug_context(const void *ctx, const char *fmt, ...) { const char *file = NULL; int line = 0; if (GET_THREAD()) { file = rb_source_loc(&line); } report_bug(file, line, fmt, ctx); die(); } void rb_bug_errno(const char *mesg, int errno_arg) { if (errno_arg == 0) rb_bug("%s: errno == 0 (NOERROR)", mesg); else { const char *errno_str = rb_strerrno(errno_arg); if (errno_str) rb_bug("%s: %s (%s)", mesg, strerror(errno_arg), errno_str); else rb_bug("%s: %s (%d)", mesg, strerror(errno_arg), errno_arg); } } /* * this is safe to call inside signal handler and timer thread * (which isn't a Ruby Thread object) */ #define write_or_abort(fd, str, len) (write((fd), (str), (len)) < 0 ? abort() : (void)0) #define WRITE_CONST(fd,str) write_or_abort((fd),(str),sizeof(str) - 1) void rb_async_bug_errno(const char *mesg, int errno_arg) { WRITE_CONST(2, "[ASYNC BUG] "); write_or_abort(2, mesg, strlen(mesg)); WRITE_CONST(2, "\n"); if (errno_arg == 0) { WRITE_CONST(2, "errno == 0 (NOERROR)\n"); } else { const char *errno_str = rb_strerrno(errno_arg); if (!errno_str) errno_str = "undefined errno"; write_or_abort(2, errno_str, strlen(errno_str)); } WRITE_CONST(2, "\n\n"); write_or_abort(2, ruby_description, strlen(ruby_description)); WRITE_CONST(2, "\n\n"); WRITE_CONST(2, REPORTBUG_MSG); abort(); } void rb_compile_bug(const char *file, int line, const char *fmt, ...) { report_bug(file, line, fmt, NULL); abort(); } void rb_compile_bug_str(VALUE file, int line, const char *fmt, ...) { report_bug(RSTRING_PTR(file), line, fmt, NULL); abort(); } void rb_assert_failure(const char *file, int line, const char *name, const char *expr) { FILE *out = stderr; fprintf(out, "Assertion Failed: %s:%d:", file, line); if (name) fprintf(out, "%s:", name); fprintf(out, "%s\n%s\n\n", expr, ruby_description); rb_vm_bugreport(NULL); bug_report_end(out); die(); } static const char builtin_types[][10] = { "", /* 0x00, */ "Object", "Class", "Module", "Float", "String", "Regexp", "Array", "Hash", "Struct", "Bignum", "File", "Data", /* internal use: wrapped C pointers */ "MatchData", /* data of $~ */ "Complex", "Rational", "", /* 0x10 */ "nil", "true", "false", "Symbol", /* :symbol */ "Fixnum", "undef", /* internal use: #undef; should not happen */ "", /* 0x17 */ "", /* 0x18 */ "", /* 0x19 */ "Memo", /* internal use: general memo */ "Node", /* internal use: syntax tree node */ "iClass", /* internal use: mixed-in module holder */ }; const char * rb_builtin_type_name(int t) { const char *name; if ((unsigned int)t >= numberof(builtin_types)) return 0; name = builtin_types[t]; if (*name) return name; return 0; } static const char * builtin_class_name(VALUE x) { const char *etype; if (NIL_P(x)) { etype = "nil"; } else if (FIXNUM_P(x)) { etype = "Fixnum"; } else if (SYMBOL_P(x)) { etype = "Symbol"; } else if (RB_TYPE_P(x, T_TRUE)) { etype = "true"; } else if (RB_TYPE_P(x, T_FALSE)) { etype = "false"; } else { etype = NULL; } return etype; } const char * rb_builtin_class_name(VALUE x) { const char *etype = builtin_class_name(x); if (!etype) { etype = rb_obj_classname(x); } return etype; } void rb_check_type(VALUE x, int t) { int xt; if (x == Qundef) { rb_bug("undef leaked to the Ruby space"); } xt = TYPE(x); if (xt != t || (xt == T_DATA && RTYPEDDATA_P(x))) { const char *tname = rb_builtin_type_name(t); if (tname) { const char *cname = builtin_class_name(x); if (cname) rb_raise(rb_eTypeError, "wrong argument type %s (expected %s)", cname, tname); else rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE" (expected %s)", rb_obj_class(x), tname); } if (xt > T_MASK && xt <= 0x3f) { rb_fatal("unknown type 0x%x (0x%x given, probably comes from extension library for ruby 1.8)", t, xt); } rb_bug("unknown type 0x%x (0x%x given)", t, xt); } } int rb_typeddata_inherited_p(const rb_data_type_t *child, const rb_data_type_t *parent) { while (child) { if (child == parent) return 1; child = child->parent; } return 0; } int rb_typeddata_is_kind_of(VALUE obj, const rb_data_type_t *data_type) { if (!RB_TYPE_P(obj, T_DATA) || !RTYPEDDATA_P(obj) || !rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) { return 0; } return 1; } void * rb_check_typeddata(VALUE obj, const rb_data_type_t *data_type) { const char *etype; if (!RB_TYPE_P(obj, T_DATA)) { wrong_type: etype = builtin_class_name(obj); if (!etype) rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE" (expected %s)", rb_obj_class(obj), data_type->wrap_struct_name); wrong_datatype: rb_raise(rb_eTypeError, "wrong argument type %s (expected %s)", etype, data_type->wrap_struct_name); } if (!RTYPEDDATA_P(obj)) { goto wrong_type; } else if (!rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) { etype = RTYPEDDATA_TYPE(obj)->wrap_struct_name; goto wrong_datatype; } return DATA_PTR(obj); } /* exception classes */ VALUE rb_eException; VALUE rb_eSystemExit; VALUE rb_eInterrupt; VALUE rb_eSignal; VALUE rb_eFatal; VALUE rb_eStandardError; VALUE rb_eRuntimeError; VALUE rb_eTypeError; VALUE rb_eArgError; VALUE rb_eIndexError; VALUE rb_eKeyError; VALUE rb_eRangeError; VALUE rb_eNameError; VALUE rb_eEncodingError; VALUE rb_eEncCompatError; VALUE rb_eNoMethodError; VALUE rb_eSecurityError; VALUE rb_eNotImpError; VALUE rb_eNoMemError; VALUE rb_cNameErrorMesg; VALUE rb_eScriptError; VALUE rb_eSyntaxError; VALUE rb_eLoadError; VALUE rb_eSystemCallError; VALUE rb_mErrno; static VALUE rb_eNOERROR; static ID id_new, id_cause, id_message, id_backtrace; static ID id_name, id_args, id_Errno, id_errno, id_i_path; static ID id_receiver, id_iseq, id_local_variables; extern ID ruby_static_id_status; #define id_bt idBt #define id_bt_locations idBt_locations #define id_mesg idMesg #define id_status ruby_static_id_status #undef rb_exc_new_cstr VALUE rb_exc_new(VALUE etype, const char *ptr, long len) { return rb_funcall(etype, id_new, 1, rb_str_new(ptr, len)); } VALUE rb_exc_new_cstr(VALUE etype, const char *s) { return rb_exc_new(etype, s, strlen(s)); } VALUE rb_exc_new_str(VALUE etype, VALUE str) { StringValue(str); return rb_funcall(etype, id_new, 1, str); } /* * call-seq: * Exception.new(msg = nil) -> exception * * Construct a new Exception object, optionally passing in * a message. */ static VALUE exc_initialize(int argc, VALUE *argv, VALUE exc) { VALUE arg; rb_scan_args(argc, argv, "01", &arg); rb_ivar_set(exc, id_mesg, arg); rb_ivar_set(exc, id_bt, Qnil); return exc; } /* * Document-method: exception * * call-seq: * exc.exception(string) -> an_exception or exc * * With no argument, or if the argument is the same as the receiver, * return the receiver. Otherwise, create a new * exception object of the same class as the receiver, but with a * message equal to <code>string.to_str</code>. * */ static VALUE exc_exception(int argc, VALUE *argv, VALUE self) { VALUE exc; if (argc == 0) return self; if (argc == 1 && self == argv[0]) return self; exc = rb_obj_clone(self); exc_initialize(argc, argv, exc); return exc; } /* * call-seq: * exception.to_s -> string * * Returns exception's message (or the name of the exception if * no message is set). */ static VALUE exc_to_s(VALUE exc) { VALUE mesg = rb_attr_get(exc, idMesg); if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc)); return rb_String(mesg); } /* * call-seq: * exception.message -> string * * Returns the result of invoking <code>exception.to_s</code>. * Normally this returns the exception's message or name. By * supplying a to_str method, exceptions are agreeing to * be used where Strings are expected. */ static VALUE exc_message(VALUE exc) { return rb_funcallv(exc, idTo_s, 0, 0); } /* * call-seq: * exception.inspect -> string * * Return this exception's class name and message */ static VALUE exc_inspect(VALUE exc) { VALUE str, klass; klass = CLASS_OF(exc); exc = rb_obj_as_string(exc); if (RSTRING_LEN(exc) == 0) { return rb_str_dup(rb_class_name(klass)); } str = rb_str_buf_new2("#<"); klass = rb_class_name(klass); rb_str_buf_append(str, klass); rb_str_buf_cat(str, ": ", 2); rb_str_buf_append(str, exc); rb_str_buf_cat(str, ">", 1); return str; } /* * call-seq: * exception.backtrace -> array * * Returns any backtrace associated with the exception. The backtrace * is an array of strings, each containing either ``filename:lineNo: in * `method''' or ``filename:lineNo.'' * * def a * raise "boom" * end * * def b * a() * end * * begin * b() * rescue => detail * print detail.backtrace.join("\n") * end * * <em>produces:</em> * * prog.rb:2:in `a' * prog.rb:6:in `b' * prog.rb:10 */ static VALUE exc_backtrace(VALUE exc) { VALUE obj; obj = rb_attr_get(exc, id_bt); if (rb_backtrace_p(obj)) { obj = rb_backtrace_to_str_ary(obj); /* rb_ivar_set(exc, id_bt, obj); */ } return obj; } /* * call-seq: * exception.backtrace_locations -> array * * Returns any backtrace associated with the exception. This method is * similar to Exception#backtrace, but the backtrace is an array of * Thread::Backtrace::Location. * * Now, this method is not affected by Exception#set_backtrace(). */ static VALUE exc_backtrace_locations(VALUE exc) { VALUE obj; obj = rb_attr_get(exc, id_bt_locations); if (!NIL_P(obj)) { obj = rb_backtrace_to_location_ary(obj); } return obj; } VALUE rb_check_backtrace(VALUE bt) { long i; static const char err[] = "backtrace must be Array of String"; if (!NIL_P(bt)) { if (RB_TYPE_P(bt, T_STRING)) return rb_ary_new3(1, bt); if (rb_backtrace_p(bt)) return bt; if (!RB_TYPE_P(bt, T_ARRAY)) { rb_raise(rb_eTypeError, err); } for (i=0;i<RARRAY_LEN(bt);i++) { VALUE e = RARRAY_AREF(bt, i); if (!RB_TYPE_P(e, T_STRING)) { rb_raise(rb_eTypeError, err); } } } return bt; } /* * call-seq: * exc.set_backtrace(backtrace) -> array * * Sets the backtrace information associated with +exc+. The +backtrace+ must * be an array of String objects or a single String in the format described * in Exception#backtrace. * */ static VALUE exc_set_backtrace(VALUE exc, VALUE bt) { return rb_ivar_set(exc, id_bt, rb_check_backtrace(bt)); } VALUE rb_exc_set_backtrace(VALUE exc, VALUE bt) { return exc_set_backtrace(exc, bt); } /* * call-seq: * exception.cause -> an_exception or nil * * Returns the previous exception ($!) at the time this exception was raised. * This is useful for wrapping exceptions and retaining the original exception * information. */ static VALUE exc_cause(VALUE exc) { return rb_attr_get(exc, id_cause); } static VALUE try_convert_to_exception(VALUE obj) { return rb_check_funcall(obj, idException, 0, 0); } /* * call-seq: * exc == obj -> true or false * * Equality---If <i>obj</i> is not an <code>Exception</code>, returns * <code>false</code>. Otherwise, returns <code>true</code> if <i>exc</i> and * <i>obj</i> share same class, messages, and backtrace. */ static VALUE exc_equal(VALUE exc, VALUE obj) { VALUE mesg, backtrace; if (exc == obj) return Qtrue; if (rb_obj_class(exc) != rb_obj_class(obj)) { int status = 0; obj = rb_protect(try_convert_to_exception, obj, &status); if (status || obj == Qundef) { rb_set_errinfo(Qnil); return Qfalse; } if (rb_obj_class(exc) != rb_obj_class(obj)) return Qfalse; mesg = rb_check_funcall(obj, id_message, 0, 0); if (mesg == Qundef) return Qfalse; backtrace = rb_check_funcall(obj, id_backtrace, 0, 0); if (backtrace == Qundef) return Qfalse; } else { mesg = rb_attr_get(obj, id_mesg); backtrace = exc_backtrace(obj); } if (!rb_equal(rb_attr_get(exc, id_mesg), mesg)) return Qfalse; if (!rb_equal(exc_backtrace(exc), backtrace)) return Qfalse; return Qtrue; } /* * call-seq: * SystemExit.new -> system_exit * SystemExit.new(status) -> system_exit * SystemExit.new(status, msg) -> system_exit * SystemExit.new(msg) -> system_exit * * Create a new +SystemExit+ exception with the given status and message. * Status is true, false, or an integer. * If status is not given, true is used. */ static VALUE exit_initialize(int argc, VALUE *argv, VALUE exc) { VALUE status; if (argc > 0) { status = *argv; switch (status) { case Qtrue: status = INT2FIX(EXIT_SUCCESS); ++argv; --argc; break; case Qfalse: status = INT2FIX(EXIT_FAILURE); ++argv; --argc; break; default: status = rb_check_to_int(status); if (NIL_P(status)) { status = INT2FIX(EXIT_SUCCESS); } else { #if EXIT_SUCCESS != 0 if (status == INT2FIX(0)) status = INT2FIX(EXIT_SUCCESS); #endif ++argv; --argc; } break; } } else { status = INT2FIX(EXIT_SUCCESS); } rb_call_super(argc, argv); rb_ivar_set(exc, id_status, status); return exc; } /* * call-seq: * system_exit.status -> fixnum * * Return the status value associated with this system exit. */ static VALUE exit_status(VALUE exc) { return rb_attr_get(exc, id_status); } /* * call-seq: * system_exit.success? -> true or false * * Returns +true+ if exiting successful, +false+ if not. */ static VALUE exit_success_p(VALUE exc) { VALUE status_val = rb_attr_get(exc, id_status); int status; if (NIL_P(status_val)) return Qtrue; status = NUM2INT(status_val); if (WIFEXITED(status) && WEXITSTATUS(status) == EXIT_SUCCESS) return Qtrue; return Qfalse; } void rb_name_error(ID id, const char *fmt, ...) { VALUE exc, argv[2]; va_list args; va_start(args, fmt); argv[0] = rb_vsprintf(fmt, args); va_end(args); argv[1] = ID2SYM(id); exc = rb_class_new_instance(2, argv, rb_eNameError); rb_exc_raise(exc); } void rb_name_error_str(VALUE str, const char *fmt, ...) { VALUE exc, argv[2]; va_list args; va_start(args, fmt); argv[0] = rb_vsprintf(fmt, args); va_end(args); argv[1] = str; exc = rb_class_new_instance(2, argv, rb_eNameError); rb_exc_raise(exc); } /* * call-seq: * NameError.new(msg [, name]) -> name_error * * Construct a new NameError exception. If given the <i>name</i> * parameter may subsequently be examined using the <code>NameError.name</code> * method. */ static VALUE name_err_initialize(int argc, VALUE *argv, VALUE self) { VALUE name; VALUE iseqw = Qnil; name = (argc > 1) ? argv[--argc] : Qnil; rb_call_super(argc, argv); rb_ivar_set(self, id_name, name); { rb_thread_t *th = GET_THREAD(); rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp)); if (cfp) iseqw = rb_iseqw_new(cfp->iseq); } rb_ivar_set(self, id_iseq, iseqw); return self; } /* * call-seq: * name_error.name -> string or nil * * Return the name associated with this NameError exception. */ static VALUE name_err_name(VALUE self) { return rb_attr_get(self, id_name); } /* * call-seq: * name_error.local_variables -> array * * Return a list of the local variable names defined where this * NameError exception was raised. * * Internal use only. */ static VALUE name_err_local_variables(VALUE self) { VALUE vars = rb_attr_get(self, id_local_variables); if (NIL_P(vars)) { VALUE iseqw = rb_attr_get(self, id_iseq); if (!NIL_P(iseqw)) vars = rb_iseqw_local_variables(iseqw); if (NIL_P(vars)) vars = rb_ary_new(); rb_ivar_set(self, id_local_variables, vars); } return vars; } /* * call-seq: * NoMethodError.new(msg, name [, args]) -> no_method_error * * Construct a NoMethodError exception for a method of the given name * called with the given arguments. The name may be accessed using * the <code>#name</code> method on the resulting object, and the * arguments using the <code>#args</code> method. */ static VALUE nometh_err_initialize(int argc, VALUE *argv, VALUE self) { VALUE args = (argc > 2) ? argv[--argc] : Qnil; name_err_initialize(argc, argv, self); rb_ivar_set(self, id_args, args); return self; } /* :nodoc: */ enum { NAME_ERR_MESG__MESG, NAME_ERR_MESG__RECV, NAME_ERR_MESG__NAME, NAME_ERR_MESG_COUNT }; static void name_err_mesg_mark(void *p) { VALUE *ptr = p; rb_gc_mark_locations(ptr, ptr+NAME_ERR_MESG_COUNT); } #define name_err_mesg_free RUBY_TYPED_DEFAULT_FREE static size_t name_err_mesg_memsize(const void *p) { return NAME_ERR_MESG_COUNT * sizeof(VALUE); } static const rb_data_type_t name_err_mesg_data_type = { "name_err_mesg", { name_err_mesg_mark, name_err_mesg_free, name_err_mesg_memsize, }, 0, 0, RUBY_TYPED_FREE_IMMEDIATELY }; /* :nodoc: */ VALUE rb_name_err_mesg_new(VALUE mesg, VALUE recv, VALUE method) { VALUE result = TypedData_Wrap_Struct(rb_cNameErrorMesg, &name_err_mesg_data_type, 0); VALUE *ptr = ALLOC_N(VALUE, NAME_ERR_MESG_COUNT); ptr[NAME_ERR_MESG__MESG] = mesg; ptr[NAME_ERR_MESG__RECV] = recv; ptr[NAME_ERR_MESG__NAME] = method; RTYPEDDATA_DATA(result) = ptr; return result; } VALUE rb_name_err_new(VALUE mesg, VALUE recv, VALUE method) { VALUE exc = rb_obj_alloc(rb_eNameError); rb_ivar_set(exc, id_mesg, rb_name_err_mesg_new(mesg, recv, method)); rb_ivar_set(exc, id_bt, Qnil); rb_ivar_set(exc, id_name, method); rb_ivar_set(exc, id_receiver, recv); return exc; } /* :nodoc: */ static VALUE name_err_mesg_equal(VALUE obj1, VALUE obj2) { VALUE *ptr1, *ptr2; int i; if (obj1 == obj2) return Qtrue; if (rb_obj_class(obj2) != rb_cNameErrorMesg) return Qfalse; TypedData_Get_Struct(obj1, VALUE, &name_err_mesg_data_type, ptr1); TypedData_Get_Struct(obj2, VALUE, &name_err_mesg_data_type, ptr2); for (i=0; i<NAME_ERR_MESG_COUNT; i++) { if (!rb_equal(ptr1[i], ptr2[i])) return Qfalse; } return Qtrue; } /* :nodoc: */ static VALUE name_err_mesg_to_str(VALUE obj) { VALUE *ptr, mesg; TypedData_Get_Struct(obj, VALUE, &name_err_mesg_data_type, ptr); mesg = ptr[NAME_ERR_MESG__MESG]; if (NIL_P(mesg)) return Qnil; else { struct RString s_str, d_str; VALUE c, s, d = 0, args[4]; int state = 0, singleton = 0; rb_encoding *usascii = rb_usascii_encoding(); #define FAKE_CSTR(v, str) rb_setup_fake_str((v), (str), rb_strlen_lit(str), usascii) obj = ptr[NAME_ERR_MESG__RECV]; switch (obj) { case Qnil: d = FAKE_CSTR(&d_str, "nil"); break; case Qtrue: d = FAKE_CSTR(&d_str, "true"); break; case Qfalse: d = FAKE_CSTR(&d_str, "false"); break; default: d = rb_protect(rb_inspect, obj, &state); if (state) rb_set_errinfo(Qnil); if (NIL_P(d) || RSTRING_LEN(d) > 65) { d = rb_any_to_s(obj); } singleton = (RSTRING_LEN(d) > 0 && RSTRING_PTR(d)[0] == '#'); d = QUOTE(d); break; } if (!singleton) { s = FAKE_CSTR(&s_str, ":"); c = rb_class_name(CLASS_OF(obj)); } else { c = s = FAKE_CSTR(&s_str, ""); } args[0] = QUOTE(rb_obj_as_string(ptr[NAME_ERR_MESG__NAME])); args[1] = d; args[2] = s; args[3] = c; mesg = rb_str_format(4, args, mesg); } return mesg; } /* :nodoc: */ static VALUE name_err_mesg_dump(VALUE obj, VALUE limit) { return name_err_mesg_to_str(obj); } /* :nodoc: */ static VALUE name_err_mesg_load(VALUE klass, VALUE str) { return str; } /* * call-seq: * name_error.receiver -> object * * Return the receiver associated with this NameError exception. */ static VALUE name_err_receiver(VALUE self) { VALUE *ptr, recv, mesg; recv = rb_ivar_lookup(self, id_receiver, Qundef); if (recv != Qundef) return recv; mesg = rb_attr_get(self, id_mesg); if (!rb_typeddata_is_kind_of(mesg, &name_err_mesg_data_type)) { rb_raise(rb_eArgError, "no receiver is available"); } ptr = DATA_PTR(mesg); return ptr[NAME_ERR_MESG__RECV]; } /* * call-seq: * no_method_error.args -> obj * * Return the arguments passed in as the third parameter to * the constructor. */ static VALUE nometh_err_args(VALUE self) { return rb_attr_get(self, id_args); } void rb_invalid_str(const char *str, const char *type) { VALUE s = rb_str_new2(str); rb_raise(rb_eArgError, "invalid value for %s: %+"PRIsVALUE, type, s); } /* * Document-module: Errno * * Ruby exception objects are subclasses of <code>Exception</code>. * However, operating systems typically report errors using plain * integers. Module <code>Errno</code> is created dynamically to map * these operating system errors to Ruby classes, with each error * number generating its own subclass of <code>SystemCallError</code>. * As the subclass is created in module <code>Errno</code>, its name * will start <code>Errno::</code>. * * The names of the <code>Errno::</code> classes depend on * the environment in which Ruby runs. On a typical Unix or Windows * platform, there are <code>Errno</code> classes such as * <code>Errno::EACCES</code>, <code>Errno::EAGAIN</code>, * <code>Errno::EINTR</code>, and so on. * * The integer operating system error number corresponding to a * particular error is available as the class constant * <code>Errno::</code><em>error</em><code>::Errno</code>. * * Errno::EACCES::Errno #=> 13 * Errno::EAGAIN::Errno #=> 11 * Errno::EINTR::Errno #=> 4 * * The full list of operating system errors on your particular platform * are available as the constants of <code>Errno</code>. * * Errno.constants #=> :E2BIG, :EACCES, :EADDRINUSE, :EADDRNOTAVAIL, ... */ static st_table *syserr_tbl; static VALUE set_syserr(int n, const char *name) { st_data_t error; if (!st_lookup(syserr_tbl, n, &error)) { error = rb_define_class_under(rb_mErrno, name, rb_eSystemCallError); /* capture nonblock errnos for WaitReadable/WaitWritable subclasses */ switch (n) { case EAGAIN: rb_eEAGAIN = error; #if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN break; case EWOULDBLOCK: #endif rb_eEWOULDBLOCK = error; break; case EINPROGRESS: rb_eEINPROGRESS = error; break; } rb_define_const(error, "Errno", INT2NUM(n)); st_add_direct(syserr_tbl, n, error); } else { rb_define_const(rb_mErrno, name, error); } return error; } static VALUE get_syserr(int n) { st_data_t error; if (!st_lookup(syserr_tbl, n, &error)) { char name[8]; /* some Windows' errno have 5 digits. */ snprintf(name, sizeof(name), "E%03d", n); error = set_syserr(n, name); } return error; } /* * call-seq: * SystemCallError.new(msg, errno) -> system_call_error_subclass * * If _errno_ corresponds to a known system error code, constructs * the appropriate <code>Errno</code> class for that error, otherwise * constructs a generic <code>SystemCallError</code> object. The * error number is subsequently available via the <code>errno</code> * method. */ static VALUE syserr_initialize(int argc, VALUE *argv, VALUE self) { #if !defined(_WIN32) char *strerror(); #endif const char *err; VALUE mesg, error, func, errmsg; VALUE klass = rb_obj_class(self); if (klass == rb_eSystemCallError) { st_data_t data = (st_data_t)klass; rb_scan_args(argc, argv, "12", &mesg, &error, &func); if (argc == 1 && FIXNUM_P(mesg)) { error = mesg; mesg = Qnil; } if (!NIL_P(error) && st_lookup(syserr_tbl, NUM2LONG(error), &data)) { klass = (VALUE)data; /* change class */ if (!RB_TYPE_P(self, T_OBJECT)) { /* insurance to avoid type crash */ rb_raise(rb_eTypeError, "invalid instance type"); } RBASIC_SET_CLASS(self, klass); } } else { rb_scan_args(argc, argv, "02", &mesg, &func); error = rb_const_get(klass, id_Errno); } if (!NIL_P(error)) err = strerror(NUM2INT(error)); else err = "unknown error"; errmsg = rb_enc_str_new_cstr(err, rb_locale_encoding()); if (!NIL_P(mesg)) { VALUE str = StringValue(mesg); if (!NIL_P(func)) rb_str_catf(errmsg, " @ %"PRIsVALUE, func); rb_str_catf(errmsg, " - %"PRIsVALUE, str); OBJ_INFECT(errmsg, mesg); } mesg = errmsg; rb_call_super(1, &mesg); rb_ivar_set(self, id_errno, error); return self; } /* * call-seq: * system_call_error.errno -> fixnum * * Return this SystemCallError's error number. */ static VALUE syserr_errno(VALUE self) { return rb_attr_get(self, id_errno); } /* * call-seq: * system_call_error === other -> true or false * * Return +true+ if the receiver is a generic +SystemCallError+, or * if the error numbers +self+ and _other_ are the same. */ static VALUE syserr_eqq(VALUE self, VALUE exc) { VALUE num, e; if (!rb_obj_is_kind_of(exc, rb_eSystemCallError)) { if (!rb_respond_to(exc, id_errno)) return Qfalse; } else if (self == rb_eSystemCallError) return Qtrue; num = rb_attr_get(exc, id_errno); if (NIL_P(num)) { num = rb_funcallv(exc, id_errno, 0, 0); } e = rb_const_get(self, id_Errno); if (FIXNUM_P(num) ? num == e : rb_equal(num, e)) return Qtrue; return Qfalse; } /* * Document-class: StandardError * * The most standard error types are subclasses of StandardError. A * rescue clause without an explicit Exception class will rescue all * StandardErrors (and only those). * * def foo * raise "Oups" * end * foo rescue "Hello" #=> "Hello" * * On the other hand: * * require 'does/not/exist' rescue "Hi" * * <em>raises the exception:</em> * * LoadError: no such file to load -- does/not/exist * */ /* * Document-class: SystemExit * * Raised by +exit+ to initiate the termination of the script. */ /* * Document-class: SignalException * * Raised when a signal is received. * * begin * Process.kill('HUP',Process.pid) * sleep # wait for receiver to handle signal sent by Process.kill * rescue SignalException => e * puts "received Exception #{e}" * end * * <em>produces:</em> * * received Exception SIGHUP */ /* * Document-class: Interrupt * * Raised with the interrupt signal is received, typically because the * user pressed on Control-C (on most posix platforms). As such, it is a * subclass of +SignalException+. * * begin * puts "Press ctrl-C when you get bored" * loop {} * rescue Interrupt => e * puts "Note: You will typically use Signal.trap instead." * end * * <em>produces:</em> * * Press ctrl-C when you get bored * * <em>then waits until it is interrupted with Control-C and then prints:</em> * * Note: You will typically use Signal.trap instead. */ /* * Document-class: TypeError * * Raised when encountering an object that is not of the expected type. * * [1, 2, 3].first("two") * * <em>raises the exception:</em> * * TypeError: no implicit conversion of String into Integer * */ /* * Document-class: ArgumentError * * Raised when the arguments are wrong and there isn't a more specific * Exception class. * * Ex: passing the wrong number of arguments * * [1, 2, 3].first(4, 5) * * <em>raises the exception:</em> * * ArgumentError: wrong number of arguments (given 2, expected 1) * * Ex: passing an argument that is not acceptable: * * [1, 2, 3].first(-4) * * <em>raises the exception:</em> * * ArgumentError: negative array size */ /* * Document-class: IndexError * * Raised when the given index is invalid. * * a = [:foo, :bar] * a.fetch(0) #=> :foo * a[4] #=> nil * a.fetch(4) #=> IndexError: index 4 outside of array bounds: -2...2 * */ /* * Document-class: KeyError * * Raised when the specified key is not found. It is a subclass of * IndexError. * * h = {"foo" => :bar} * h.fetch("foo") #=> :bar * h.fetch("baz") #=> KeyError: key not found: "baz" * */ /* * Document-class: RangeError * * Raised when a given numerical value is out of range. * * [1, 2, 3].drop(1 << 100) * * <em>raises the exception:</em> * * RangeError: bignum too big to convert into `long' */ /* * Document-class: ScriptError * * ScriptError is the superclass for errors raised when a script * can not be executed because of a +LoadError+, * +NotImplementedError+ or a +SyntaxError+. Note these type of * +ScriptErrors+ are not +StandardError+ and will not be * rescued unless it is specified explicitly (or its ancestor * +Exception+). */ /* * Document-class: SyntaxError * * Raised when encountering Ruby code with an invalid syntax. * * eval("1+1=2") * * <em>raises the exception:</em> * * SyntaxError: (eval):1: syntax error, unexpected '=', expecting $end */ /* * Document-class: LoadError * * Raised when a file required (a Ruby script, extension library, ...) * fails to load. * * require 'this/file/does/not/exist' * * <em>raises the exception:</em> * * LoadError: no such file to load -- this/file/does/not/exist */ /* * Document-class: NotImplementedError * * Raised when a feature is not implemented on the current platform. For * example, methods depending on the +fsync+ or +fork+ system calls may * raise this exception if the underlying operating system or Ruby * runtime does not support them. * * Note that if +fork+ raises a +NotImplementedError+, then * <code>respond_to?(:fork)</code> returns +false+. */ /* * Document-class: NameError * * Raised when a given name is invalid or undefined. * * puts foo * * <em>raises the exception:</em> * * NameError: undefined local variable or method `foo' for main:Object * * Since constant names must start with a capital: * * Fixnum.const_set :answer, 42 * * <em>raises the exception:</em> * * NameError: wrong constant name answer */ /* * Document-class: NoMethodError * * Raised when a method is called on a receiver which doesn't have it * defined and also fails to respond with +method_missing+. * * "hello".to_ary * * <em>raises the exception:</em> * * NoMethodError: undefined method `to_ary' for "hello":String */ /* * Document-class: RuntimeError * * A generic error class raised when an invalid operation is attempted. * * [1, 2, 3].freeze << 4 * * <em>raises the exception:</em> * * RuntimeError: can't modify frozen Array * * Kernel.raise will raise a RuntimeError if no Exception class is * specified. * * raise "ouch" * * <em>raises the exception:</em> * * RuntimeError: ouch */ /* * Document-class: SecurityError * * Raised when attempting a potential unsafe operation, typically when * the $SAFE level is raised above 0. * * foo = "bar" * proc = Proc.new do * $SAFE = 3 * foo.untaint * end * proc.call * * <em>raises the exception:</em> * * SecurityError: Insecure: Insecure operation `untaint' at level 3 */ /* * Document-class: NoMemoryError * * Raised when memory allocation fails. */ /* * Document-class: SystemCallError * * SystemCallError is the base class for all low-level * platform-dependent errors. * * The errors available on the current platform are subclasses of * SystemCallError and are defined in the Errno module. * * File.open("does/not/exist") * * <em>raises the exception:</em> * * Errno::ENOENT: No such file or directory - does/not/exist */ /* * Document-class: EncodingError * * EncodingError is the base class for encoding errors. */ /* * Document-class: Encoding::CompatibilityError * * Raised by Encoding and String methods when the source encoding is * incompatible with the target encoding. */ /* * Document-class: fatal * * fatal is an Exception that is raised when ruby has encountered a fatal * error and must exit. You are not able to rescue fatal. */ /* * Document-class: NameError::message * :nodoc: */ /* * Descendants of class Exception are used to communicate between * Kernel#raise and +rescue+ statements in <code>begin ... end</code> blocks. * Exception objects carry information about the exception -- its type (the * exception's class name), an optional descriptive string, and optional * traceback information. Exception subclasses may add additional * information like NameError#name. * * Programs may make subclasses of Exception, typically of StandardError or * RuntimeError, to provide custom classes and add additional information. * See the subclass list below for defaults for +raise+ and +rescue+. * * When an exception has been raised but not yet handled (in +rescue+, * +ensure+, +at_exit+ and +END+ blocks) the global variable <code>$!</code> * will contain the current exception and <code>$@</code> contains the * current exception's backtrace. * * It is recommended that a library should have one subclass of StandardError * or RuntimeError and have specific exception types inherit from it. This * allows the user to rescue a generic exception type to catch all exceptions * the library may raise even if future versions of the library add new * exception subclasses. * * For example: * * class MyLibrary * class Error < RuntimeError * end * * class WidgetError < Error * end * * class FrobError < Error * end * * end * * To handle both WidgetError and FrobError the library user can rescue * MyLibrary::Error. * * The built-in subclasses of Exception are: * * * NoMemoryError * * ScriptError * * LoadError * * NotImplementedError * * SyntaxError * * SecurityError * * SignalException * * Interrupt * * StandardError -- default for +rescue+ * * ArgumentError * * UncaughtThrowError * * EncodingError * * FiberError * * IOError * * EOFError * * IndexError * * KeyError * * StopIteration * * LocalJumpError * * NameError * * NoMethodError * * RangeError * * FloatDomainError * * RegexpError * * RuntimeError -- default for +raise+ * * SystemCallError * * Errno::* * * ThreadError * * TypeError * * ZeroDivisionError * * SystemExit * * SystemStackError * * fatal -- impossible to rescue */ void Init_Exception(void) { rb_eException = rb_define_class("Exception", rb_cObject); rb_define_singleton_method(rb_eException, "exception", rb_class_new_instance, -1); rb_define_method(rb_eException, "exception", exc_exception, -1); rb_define_method(rb_eException, "initialize", exc_initialize, -1); rb_define_method(rb_eException, "==", exc_equal, 1); rb_define_method(rb_eException, "to_s", exc_to_s, 0); rb_define_method(rb_eException, "message", exc_message, 0); rb_define_method(rb_eException, "inspect", exc_inspect, 0); rb_define_method(rb_eException, "backtrace", exc_backtrace, 0); rb_define_method(rb_eException, "backtrace_locations", exc_backtrace_locations, 0); rb_define_method(rb_eException, "set_backtrace", exc_set_backtrace, 1); rb_define_method(rb_eException, "cause", exc_cause, 0); rb_eSystemExit = rb_define_class("SystemExit", rb_eException); rb_define_method(rb_eSystemExit, "initialize", exit_initialize, -1); rb_define_method(rb_eSystemExit, "status", exit_status, 0); rb_define_method(rb_eSystemExit, "success?", exit_success_p, 0); rb_eFatal = rb_define_class("fatal", rb_eException); rb_eSignal = rb_define_class("SignalException", rb_eException); rb_eInterrupt = rb_define_class("Interrupt", rb_eSignal); rb_eStandardError = rb_define_class("StandardError", rb_eException); rb_eTypeError = rb_define_class("TypeError", rb_eStandardError); rb_eArgError = rb_define_class("ArgumentError", rb_eStandardError); rb_eIndexError = rb_define_class("IndexError", rb_eStandardError); rb_eKeyError = rb_define_class("KeyError", rb_eIndexError); rb_eRangeError = rb_define_class("RangeError", rb_eStandardError); rb_eScriptError = rb_define_class("ScriptError", rb_eException); rb_eSyntaxError = rb_define_class("SyntaxError", rb_eScriptError); rb_eLoadError = rb_define_class("LoadError", rb_eScriptError); /* the path failed to load */ rb_attr(rb_eLoadError, rb_intern_const("path"), 1, 0, Qfalse); rb_eNotImpError = rb_define_class("NotImplementedError", rb_eScriptError); rb_eNameError = rb_define_class("NameError", rb_eStandardError); rb_define_method(rb_eNameError, "initialize", name_err_initialize, -1); rb_define_method(rb_eNameError, "name", name_err_name, 0); rb_define_method(rb_eNameError, "receiver", name_err_receiver, 0); rb_define_method(rb_eNameError, "local_variables", name_err_local_variables, 0); rb_cNameErrorMesg = rb_define_class_under(rb_eNameError, "message", rb_cData); rb_define_method(rb_cNameErrorMesg, "==", name_err_mesg_equal, 1); rb_define_method(rb_cNameErrorMesg, "to_str", name_err_mesg_to_str, 0); rb_define_method(rb_cNameErrorMesg, "_dump", name_err_mesg_dump, 1); rb_define_singleton_method(rb_cNameErrorMesg, "_load", name_err_mesg_load, 1); rb_eNoMethodError = rb_define_class("NoMethodError", rb_eNameError); rb_define_method(rb_eNoMethodError, "initialize", nometh_err_initialize, -1); rb_define_method(rb_eNoMethodError, "args", nometh_err_args, 0); rb_eRuntimeError = rb_define_class("RuntimeError", rb_eStandardError); rb_eSecurityError = rb_define_class("SecurityError", rb_eException); rb_eNoMemError = rb_define_class("NoMemoryError", rb_eException); rb_eEncodingError = rb_define_class("EncodingError", rb_eStandardError); rb_eEncCompatError = rb_define_class_under(rb_cEncoding, "CompatibilityError", rb_eEncodingError); syserr_tbl = st_init_numtable(); rb_eSystemCallError = rb_define_class("SystemCallError", rb_eStandardError); rb_define_method(rb_eSystemCallError, "initialize", syserr_initialize, -1); rb_define_method(rb_eSystemCallError, "errno", syserr_errno, 0); rb_define_singleton_method(rb_eSystemCallError, "===", syserr_eqq, 1); rb_mErrno = rb_define_module("Errno"); rb_define_global_function("warn", rb_warn_m, -1); id_new = rb_intern_const("new"); id_cause = rb_intern_const("cause"); id_message = rb_intern_const("message"); id_backtrace = rb_intern_const("backtrace"); id_name = rb_intern_const("name"); id_args = rb_intern_const("args"); id_receiver = rb_intern_const("receiver"); id_local_variables = rb_intern_const("local_variables"); id_Errno = rb_intern_const("Errno"); id_errno = rb_intern_const("errno"); id_i_path = rb_intern_const("@path"); id_iseq = rb_make_internal_id(); } void rb_enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...) { va_list args; VALUE mesg; va_start(args, fmt); mesg = rb_enc_vsprintf(enc, fmt, args); va_end(args); rb_exc_raise(rb_exc_new3(exc, mesg)); } void rb_raise(VALUE exc, const char *fmt, ...) { va_list args; VALUE mesg; va_start(args, fmt); mesg = rb_vsprintf(fmt, args); va_end(args); rb_exc_raise(rb_exc_new3(exc, mesg)); } NORETURN(static void raise_loaderror(VALUE path, VALUE mesg)); static void raise_loaderror(VALUE path, VALUE mesg) { VALUE err = rb_exc_new3(rb_eLoadError, mesg); rb_ivar_set(err, id_i_path, path); rb_exc_raise(err); } void rb_loaderror(const char *fmt, ...) { va_list args; VALUE mesg; va_start(args, fmt); mesg = rb_enc_vsprintf(rb_locale_encoding(), fmt, args); va_end(args); raise_loaderror(Qnil, mesg); } void rb_loaderror_with_path(VALUE path, const char *fmt, ...) { va_list args; VALUE mesg; va_start(args, fmt); mesg = rb_enc_vsprintf(rb_locale_encoding(), fmt, args); va_end(args); raise_loaderror(path, mesg); } void rb_notimplement(void) { rb_raise(rb_eNotImpError, "%"PRIsVALUE"() function is unimplemented on this machine", rb_id2str(rb_frame_this_func())); } void rb_fatal(const char *fmt, ...) { va_list args; VALUE mesg; va_start(args, fmt); mesg = rb_vsprintf(fmt, args); va_end(args); rb_exc_fatal(rb_exc_new3(rb_eFatal, mesg)); } static VALUE make_errno_exc(const char *mesg) { int n = errno; errno = 0; if (n == 0) { rb_bug("rb_sys_fail(%s) - errno == 0", mesg ? mesg : ""); } return rb_syserr_new(n, mesg); } static VALUE make_errno_exc_str(VALUE mesg) { int n = errno; errno = 0; if (!mesg) mesg = Qnil; if (n == 0) { const char *s = !NIL_P(mesg) ? RSTRING_PTR(mesg) : ""; rb_bug("rb_sys_fail_str(%s) - errno == 0", s); } return rb_syserr_new_str(n, mesg); } VALUE rb_syserr_new(int n, const char *mesg) { VALUE arg; arg = mesg ? rb_str_new2(mesg) : Qnil; return rb_syserr_new_str(n, arg); } VALUE rb_syserr_new_str(int n, VALUE arg) { return rb_class_new_instance(1, &arg, get_syserr(n)); } void rb_syserr_fail(int e, const char *mesg) { rb_exc_raise(rb_syserr_new(e, mesg)); } void rb_syserr_fail_str(int e, VALUE mesg) { rb_exc_raise(rb_syserr_new_str(e, mesg)); } void rb_sys_fail(const char *mesg) { rb_exc_raise(make_errno_exc(mesg)); } void rb_sys_fail_str(VALUE mesg) { rb_exc_raise(make_errno_exc_str(mesg)); } #ifdef RUBY_FUNCTION_NAME_STRING void rb_sys_fail_path_in(const char *func_name, VALUE path) { int n = errno; errno = 0; rb_syserr_fail_path_in(func_name, n, path); } void rb_syserr_fail_path_in(const char *func_name, int n, VALUE path) { VALUE args[2]; if (!path) path = Qnil; if (n == 0) { const char *s = !NIL_P(path) ? RSTRING_PTR(path) : ""; if (!func_name) func_name = "(null)"; rb_bug("rb_sys_fail_path_in(%s, %s) - errno == 0", func_name, s); } args[0] = path; args[1] = rb_str_new_cstr(func_name); rb_exc_raise(rb_class_new_instance(2, args, get_syserr(n))); } #endif void rb_mod_sys_fail(VALUE mod, const char *mesg) { VALUE exc = make_errno_exc(mesg); rb_extend_object(exc, mod); rb_exc_raise(exc); } void rb_mod_sys_fail_str(VALUE mod, VALUE mesg) { VALUE exc = make_errno_exc_str(mesg); rb_extend_object(exc, mod); rb_exc_raise(exc); } void rb_mod_syserr_fail(VALUE mod, int e, const char *mesg) { VALUE exc = rb_syserr_new(e, mesg); rb_extend_object(exc, mod); rb_exc_raise(exc); } void rb_mod_syserr_fail_str(VALUE mod, int e, VALUE mesg) { VALUE exc = rb_syserr_new_str(e, mesg); rb_extend_object(exc, mod); rb_exc_raise(exc); } void rb_sys_warning(const char *fmt, ...) { VALUE mesg; va_list args; int errno_save; errno_save = errno; if (!RTEST(ruby_verbose)) return; va_start(args, fmt); mesg = warning_string(0, fmt, args); va_end(args); rb_str_set_len(mesg, RSTRING_LEN(mesg)-1); rb_str_catf(mesg, ": %s\n", strerror(errno_save)); rb_write_error_str(mesg); errno = errno_save; } void rb_sys_enc_warning(rb_encoding *enc, const char *fmt, ...) { VALUE mesg; va_list args; int errno_save; errno_save = errno; if (!RTEST(ruby_verbose)) return; va_start(args, fmt); mesg = warning_string(enc, fmt, args); va_end(args); rb_str_set_len(mesg, RSTRING_LEN(mesg)-1); rb_str_catf(mesg, ": %s\n", strerror(errno_save)); rb_write_error_str(mesg); errno = errno_save; } void rb_load_fail(VALUE path, const char *err) { VALUE mesg = rb_str_buf_new_cstr(err); rb_str_cat2(mesg, " -- "); rb_str_append(mesg, path); /* should be ASCII compatible */ raise_loaderror(path, mesg); } void rb_error_frozen(const char *what) { rb_raise(rb_eRuntimeError, "can't modify frozen %s", what); } void rb_error_frozen_object(VALUE frozen_obj) { VALUE debug_info; const ID created_info = id_debug_created_info; if (!NIL_P(debug_info = rb_attr_get(frozen_obj, created_info))) { VALUE path = rb_ary_entry(debug_info, 0); VALUE line = rb_ary_entry(debug_info, 1); rb_raise(rb_eRuntimeError, "can't modify frozen %"PRIsVALUE", created at %"PRIsVALUE":%"PRIsVALUE, CLASS_OF(frozen_obj), path, line); } else { rb_raise(rb_eRuntimeError, "can't modify frozen %"PRIsVALUE, CLASS_OF(frozen_obj)); } } #undef rb_check_frozen void rb_check_frozen(VALUE obj) { rb_check_frozen_internal(obj); } void rb_error_untrusted(VALUE obj) { } #undef rb_check_trusted void rb_check_trusted(VALUE obj) { } void rb_check_copyable(VALUE obj, VALUE orig) { if (!FL_ABLE(obj)) return; rb_check_frozen_internal(obj); if (!FL_ABLE(orig)) return; if ((~RBASIC(obj)->flags & RBASIC(orig)->flags) & FL_TAINT) { if (rb_safe_level() > 0) { rb_raise(rb_eSecurityError, "Insecure: can't modify %"PRIsVALUE, RBASIC(obj)->klass); } } } void Init_syserr(void) { rb_eNOERROR = set_syserr(0, "NOERROR"); #define defined_error(name, num) set_syserr((num), (name)); #define undefined_error(name) set_syserr(0, (name)); #include "known_errors.inc" #undef defined_error #undef undefined_error }