From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001 From: Jari Vetoniemi Date: Mon, 16 Mar 2020 18:49:26 +0900 Subject: Fresh start --- jni/ruby/error.c | 2227 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2227 insertions(+) create mode 100644 jni/ruby/error.c (limited to 'jni/ruby/error.c') diff --git a/jni/ruby/error.c b/jni/ruby/error.c new file mode 100644 index 0000000..796dee3 --- /dev/null +++ b/jni/ruby/error.c @@ -0,0 +1,2227 @@ +/********************************************************************** + + error.c - + + $Author: naruse $ + created at: Mon Aug 9 16:11:34 JST 1993 + + Copyright (C) 1993-2007 Yukihiro Matsumoto + +**********************************************************************/ + +#include "internal.h" +#include "ruby/st.h" +#include "vm_core.h" + +#include +#include +#ifdef HAVE_STDLIB_H +#include +#endif +#include +#ifdef HAVE_UNISTD_H +#include +#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_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" \ + "" +#if defined __APPLE__ + "Don't forget to include the above Crash Report log file.\n" +#endif + "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_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); + VALUE file = rb_sourcefilename(); + + if (!NIL_P(file)) { + int line = rb_sourceline(); + 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); +} + +#if 0 +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); +} +#endif + +/* 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 + * -W0 flag). + * + * warn("warning 1", "warning 2") + * + * produces: + * + * 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; ifunc)(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_sourcefile(); + line = rb_sourceline(); + } + + 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_sourcefile(); + line = rb_sourceline(); + } + + 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(); +} + +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", + "", /* 0x16 */ + "", /* 0x17 */ + "", /* 0x18 */ + "", /* 0x19 */ + "", /* 0x1a */ + "undef", /* internal use: #undef; should not happen */ + "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; +} + +#define builtin_class_name rb_builtin_class_name +const char * +rb_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 = 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) { + rb_raise(rb_eTypeError, "wrong argument type %s (expected %s)", + builtin_class_name(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; + static const char mesg[] = "wrong argument type %s (expected %s)"; + + if (!RB_TYPE_P(obj, T_DATA)) { + etype = builtin_class_name(obj); + rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name); + } + if (!RTYPEDDATA_P(obj)) { + etype = rb_obj_classname(obj); + rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name); + } + else if (!rb_typeddata_inherited_p(RTYPEDDATA_TYPE(obj), data_type)) { + etype = RTYPEDDATA_TYPE(obj)->wrap_struct_name; + rb_raise(rb_eTypeError, mesg, etype, data_type->wrap_struct_name); + } + 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; + +#undef rb_exc_new_cstr + +VALUE +rb_exc_new(VALUE etype, const char *ptr, long len) +{ + return rb_funcall(etype, rb_intern("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, rb_intern("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_iv_set(exc, "mesg", arg); + rb_iv_set(exc, "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 string.to_str. + * + */ + +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, rb_intern("mesg")); + + 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 exception.to_s. + * 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_funcall(exc, rb_intern("to_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 + * + * produces: + * + * prog.rb:2:in `a' + * prog.rb:6:in `b' + * prog.rb:10 +*/ + +static VALUE +exc_backtrace(VALUE exc) +{ + ID bt; + VALUE obj; + + CONST_ID(bt, "bt"); + obj = rb_attr_get(exc, bt); + + if (rb_backtrace_p(obj)) { + obj = rb_backtrace_to_str_ary(obj); + /* rb_iv_set(exc, "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) +{ + ID bt_locations; + VALUE obj; + + CONST_ID(bt_locations, "bt_locations"); + obj = rb_attr_get(exc, 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 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_iv_set(exc, "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. + */ + +VALUE +exc_cause(VALUE exc) +{ + ID id_cause; + CONST_ID(id_cause, "cause"); + 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 obj is not an Exception, returns + * false. Otherwise, returns true if exc and + * obj share same class, messages, and backtrace. + */ + +static VALUE +exc_equal(VALUE exc, VALUE obj) +{ + VALUE mesg, backtrace; + const ID id_mesg = idMesg; + + if (exc == obj) return Qtrue; + + if (rb_obj_class(exc) != rb_obj_class(obj)) { + int status = 0; + ID id_message, id_backtrace; + CONST_ID(id_message, "message"); + CONST_ID(id_backtrace, "backtrace"); + + 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_iv_set(exc, "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, rb_intern("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, rb_intern("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 name + * parameter may subsequently be examined using the NameError.name + * method. + */ + +static VALUE +name_err_initialize(int argc, VALUE *argv, VALUE self) +{ + VALUE name; + + name = (argc > 1) ? argv[--argc] : Qnil; + rb_call_super(argc, argv); + rb_iv_set(self, "name", name); + 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, rb_intern("name")); +} + +/* + * 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 #name method on the resulting object, and the + * arguments using the #args 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_iv_set(self, "args", args); + return self; +} + +/* :nodoc: */ +#define NAME_ERR_MESG_COUNT 3 + +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 p ? (NAME_ERR_MESG_COUNT * sizeof(VALUE)) : 0; +} + +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 obj, VALUE mesg, VALUE recv, VALUE method) +{ + VALUE *ptr = ALLOC_N(VALUE, NAME_ERR_MESG_COUNT); + VALUE result; + + ptr[0] = mesg; + ptr[1] = recv; + ptr[2] = method; + result = TypedData_Wrap_Struct(rb_cNameErrorMesg, &name_err_mesg_data_type, ptr); + RB_GC_GUARD(mesg); + RB_GC_GUARD(recv); + RB_GC_GUARD(method); + return result; +} + +/* :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 65) { + d = rb_any_to_s(obj); + } + desc = RSTRING_PTR(d); + break; + } + if (desc && desc[0] != '#') { + d = d ? rb_str_dup(d) : rb_str_new2(desc); + rb_str_cat2(d, ":"); + rb_str_append(d, rb_class_name(CLASS_OF(obj))); + } + args[0] = mesg; + args[1] = ptr[2]; + args[2] = d; + mesg = rb_f_sprintf(NAME_ERR_MESG_COUNT, args); + } + 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: + * 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, rb_intern("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 Exception. + * However, operating systems typically report errors using plain + * integers. Module Errno is created dynamically to map + * these operating system errors to Ruby classes, with each error + * number generating its own subclass of SystemCallError. + * As the subclass is created in module Errno, its name + * will start Errno::. + * + * The names of the Errno:: classes depend on + * the environment in which Ruby runs. On a typical Unix or Windows + * platform, there are Errno classes such as + * Errno::EACCES, Errno::EAGAIN, + * Errno::EINTR, and so on. + * + * The integer operating system error number corresponding to a + * particular error is available as the class constant + * Errno::error::Errno. + * + * 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 Errno. + * + * 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 Errno class for that error, otherwise + * constructs a generic SystemCallError object. The + * error number is subsequently available via the errno + * 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, rb_intern("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_iv_set(self, "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, rb_intern("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; + ID en; + + CONST_ID(en, "errno"); + + if (!rb_obj_is_kind_of(exc, rb_eSystemCallError)) { + if (!rb_respond_to(exc, en)) return Qfalse; + } + else if (self == rb_eSystemCallError) return Qtrue; + + num = rb_attr_get(exc, rb_intern("errno")); + if (NIL_P(num)) { + num = rb_funcall(exc, en, 0, 0); + } + e = rb_const_get(self, rb_intern("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" + * + * raises the exception: + * + * 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 + * + * produces: + * + * 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 + * + * produces: + * + * Press ctrl-C when you get bored + * + * then waits until it is interrupted with Control-C and then prints: + * + * 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") + * + * raises the exception: + * + * 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) + * + * raises the exception: + * + * ArgumentError: wrong number of arguments (2 for 1) + * + * Ex: passing an argument that is not acceptable: + * + * [1, 2, 3].first(-4) + * + * raises the exception: + * + * 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) + * + * raises the exception: + * + * 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") + * + * raises the exception: + * + * 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' + * + * raises the exception: + * + * 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 + * respond_to?(:fork) returns +false+. + */ + +/* + * Document-class: NameError + * + * Raised when a given name is invalid or undefined. + * + * puts foo + * + * raises the exception: + * + * NameError: undefined local variable or method `foo' for main:Object + * + * Since constant names must start with a capital: + * + * Fixnum.const_set :answer, 42 + * + * raises the exception: + * + * 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 + * + * raises the exception: + * + * 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 + * + * raises the exception: + * + * RuntimeError: can't modify frozen Array + * + * Kernel.raise will raise a RuntimeError if no Exception class is + * specified. + * + * raise "ouch" + * + * raises the exception: + * + * 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 + * + * raises the exception: + * + * 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") + * + * raises the exception: + * + * 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 begin ... end 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 $! + * will contain the current exception and $@ 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_cNameErrorMesg = rb_define_class_under(rb_eNameError, "message", rb_cData); + rb_define_singleton_method(rb_cNameErrorMesg, "!", rb_name_err_mesg_new, NAME_ERR_MESG_COUNT); + 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); +} + +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, rb_intern("@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) +{ + 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 +} -- cgit v1.2.3