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error.c
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error.c
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/**********************************************************************
error.c -
$Author$
created at: Mon Aug 9 16:11:34 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
#include "ruby/internal/config.h"
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#if defined __APPLE__
# include <AvailabilityMacros.h>
#endif
#include "internal.h"
#include "internal/error.h"
#include "internal/eval.h"
#include "internal/hash.h"
#include "internal/io.h"
#include "internal/load.h"
#include "internal/object.h"
#include "internal/symbol.h"
#include "internal/thread.h"
#include "internal/variable.h"
#include "ruby/encoding.h"
#include "ruby/st.h"
#include "ruby_assert.h"
#include "vm_core.h"
#include "builtin.h"
/*!
* \defgroup exception Exception handlings
* \{
*/
#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 *);
int rb_str_end_with_asciichar(VALUE str, int c);
VALUE rb_ident_hash_new(void);
long rb_backtrace_length_limit = -1;
VALUE rb_eEAGAIN;
VALUE rb_eEWOULDBLOCK;
VALUE rb_eEINPROGRESS;
static VALUE rb_mWarning;
static VALUE rb_cWarningBuffer;
static ID id_warn;
static ID id_category;
static ID id_deprecated;
static ID id_experimental;
static VALUE sym_category;
static struct {
st_table *id2enum, *enum2id;
} warning_categories;
extern const char ruby_description[];
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
err_vcatf(VALUE str, const char *pre, const char *file, int line,
const char *fmt, va_list args)
{
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;
}
VALUE
rb_syntax_error_append(VALUE exc, VALUE file, int line, int column,
rb_encoding *enc, const char *fmt, va_list args)
{
const char *fn = NIL_P(file) ? NULL : RSTRING_PTR(file);
if (!exc) {
VALUE mesg = rb_enc_str_new(0, 0, enc);
err_vcatf(mesg, NULL, fn, line, fmt, args);
rb_str_cat2(mesg, "\n");
rb_write_error_str(mesg);
}
else {
VALUE mesg;
if (NIL_P(exc)) {
mesg = rb_enc_str_new(0, 0, enc);
exc = rb_class_new_instance(1, &mesg, rb_eSyntaxError);
}
else {
mesg = rb_attr_get(exc, idMesg);
if (RSTRING_LEN(mesg) > 0 && *(RSTRING_END(mesg)-1) != '\n')
rb_str_cat_cstr(mesg, "\n");
}
err_vcatf(mesg, NULL, fn, line, fmt, args);
}
return exc;
}
static unsigned int warning_disabled_categories = (
1U << RB_WARN_CATEGORY_DEPRECATED |
0);
static unsigned int
rb_warning_category_mask(VALUE category)
{
return 1U << rb_warning_category_from_name(category);
}
rb_warning_category_t
rb_warning_category_from_name(VALUE category)
{
st_data_t cat_value;
ID cat_id;
Check_Type(category, T_SYMBOL);
if (!(cat_id = rb_check_id(&category)) ||
!st_lookup(warning_categories.id2enum, cat_id, &cat_value)) {
rb_raise(rb_eArgError, "unknown category: %"PRIsVALUE, category);
}
return (rb_warning_category_t)cat_value;
}
static VALUE
rb_warning_category_to_name(rb_warning_category_t category)
{
st_data_t id;
if (!st_lookup(warning_categories.enum2id, category, &id)) {
rb_raise(rb_eArgError, "invalid category: %d", (int)category);
}
return id ? ID2SYM(id) : Qnil;
}
void
rb_warning_category_update(unsigned int mask, unsigned int bits)
{
warning_disabled_categories &= ~mask;
warning_disabled_categories |= mask & ~bits;
}
MJIT_FUNC_EXPORTED bool
rb_warning_category_enabled_p(rb_warning_category_t category)
{
return !(warning_disabled_categories & (1U << category));
}
/*
* call-seq:
* Warning[category] -> true or false
*
* Returns the flag to show the warning messages for +category+.
* Supported categories are:
*
* +:deprecated+ :: deprecation warnings
* * assignment of non-nil value to <code>$,</code> and <code>$;</code>
* * keyword arguments
* * proc/lambda without block
* etc.
*
* +:experimental+ :: experimental features
* * Pattern matching
*/
static VALUE
rb_warning_s_aref(VALUE mod, VALUE category)
{
rb_warning_category_t cat = rb_warning_category_from_name(category);
if (rb_warning_category_enabled_p(cat))
return Qtrue;
return Qfalse;
}
/*
* call-seq:
* Warning[category] = flag -> flag
*
* Sets the warning flags for +category+.
* See Warning.[] for the categories.
*/
static VALUE
rb_warning_s_aset(VALUE mod, VALUE category, VALUE flag)
{
unsigned int mask = rb_warning_category_mask(category);
unsigned int disabled = warning_disabled_categories;
if (!RTEST(flag))
disabled |= mask;
else
disabled &= ~mask;
warning_disabled_categories = disabled;
return flag;
}
/*
* call-seq:
* warn(msg, category: nil) -> nil
*
* Writes warning message +msg+ to $stderr. This method is called by
* Ruby for all emitted warnings. A +category+ may be included with
* the warning.
*
* See the documentation of the Warning module for how to customize this.
*/
static VALUE
rb_warning_s_warn(int argc, VALUE *argv, VALUE mod)
{
VALUE str;
VALUE opt;
VALUE category = Qnil;
rb_scan_args(argc, argv, "1:", &str, &opt);
if (!NIL_P(opt)) rb_get_kwargs(opt, &id_category, 0, 1, &category);
Check_Type(str, T_STRING);
rb_must_asciicompat(str);
if (!NIL_P(category)) {
rb_warning_category_t cat = rb_warning_category_from_name(category);
if (!rb_warning_category_enabled_p(cat)) return Qnil;
}
rb_write_error_str(str);
return Qnil;
}
/*
* Document-module: Warning
*
* The Warning module contains a single method named #warn, and the
* module extends itself, making Warning.warn available.
* Warning.warn is called for all warnings issued by Ruby.
* By default, warnings are printed to $stderr.
*
* Changing the behavior of Warning.warn is useful to customize how warnings are
* handled by Ruby, for instance by filtering some warnings, and/or outputting
* warnings somewhere other than $stderr.
*
* If you want to change the behavior of Warning.warn you should use
* +Warning.extend(MyNewModuleWithWarnMethod)+ and you can use `super`
* to get the default behavior of printing the warning to $stderr.
*
* Example:
* module MyWarningFilter
* def warn(message, category: nil, **kwargs)
* if /some warning I want to ignore/.matches?(message)
* # ignore
* else
* super
* end
* end
* end
* Warning.extend MyWarningFilter
*
* You should never redefine Warning#warn (the instance method), as that will
* then no longer provide a way to use the default behavior.
*
* The +warning+ gem provides convenient ways to customize Warning.warn.
*/
static VALUE
rb_warning_warn(VALUE mod, VALUE str)
{
return rb_funcallv(mod, id_warn, 1, &str);
}
static int
rb_warning_warn_arity(void)
{
return rb_method_entry_arity(rb_method_entry(rb_singleton_class(rb_mWarning), id_warn));
}
static VALUE
rb_warn_category(VALUE str, VALUE category)
{
if (RUBY_DEBUG && !NIL_P(category)) {
rb_warning_category_from_name(category);
}
if (rb_warning_warn_arity() == 1) {
return rb_warning_warn(rb_mWarning, str);
}
else {
VALUE args[2];
args[0] = str;
args[1] = rb_hash_new();
rb_hash_aset(args[1], sym_category, category);
return rb_funcallv_kw(rb_mWarning, id_warn, 2, args, RB_PASS_KEYWORDS);
}
}
static void
rb_write_warning_str(VALUE str)
{
rb_warning_warn(rb_mWarning, str);
}
static VALUE
warn_vsprintf(rb_encoding *enc, const char *file, int line, const char *fmt, va_list args)
{
VALUE str = rb_enc_str_new(0, 0, enc);
err_vcatf(str, "warning: ", file, line, fmt, args);
return rb_str_cat2(str, "\n");
}
void
rb_compile_warn(const char *file, int line, const char *fmt, ...)
{
VALUE str;
va_list args;
if (NIL_P(ruby_verbose)) return;
va_start(args, fmt);
str = warn_vsprintf(NULL, file, line, fmt, args);
va_end(args);
rb_write_warning_str(str);
}
/* rb_compile_warning() reports only in verbose mode */
void
rb_compile_warning(const char *file, int line, const char *fmt, ...)
{
VALUE str;
va_list args;
if (!RTEST(ruby_verbose)) return;
va_start(args, fmt);
str = warn_vsprintf(NULL, file, line, fmt, args);
va_end(args);
rb_write_warning_str(str);
}
void
rb_category_compile_warn(rb_warning_category_t category, const char *file, int line, const char *fmt, ...)
{
VALUE str;
va_list args;
if (NIL_P(ruby_verbose)) return;
va_start(args, fmt);
str = warn_vsprintf(NULL, file, line, fmt, args);
va_end(args);
rb_warn_category(str, rb_warning_category_to_name(category));
}
static VALUE
warning_string(rb_encoding *enc, const char *fmt, va_list args)
{
int line;
const char *file = rb_source_location_cstr(&line);
return warn_vsprintf(enc, file, line, fmt, args);
}
#define with_warning_string(mesg, enc, fmt) \
VALUE mesg; \
va_list args; va_start(args, fmt); \
mesg = warning_string(enc, fmt, args); \
va_end(args);
void
rb_warn(const char *fmt, ...)
{
if (!NIL_P(ruby_verbose)) {
with_warning_string(mesg, 0, fmt) {
rb_write_warning_str(mesg);
}
}
}
void
rb_category_warn(rb_warning_category_t category, const char *fmt, ...)
{
if (!NIL_P(ruby_verbose)) {
with_warning_string(mesg, 0, fmt) {
rb_warn_category(mesg, rb_warning_category_to_name(category));
}
}
}
void
rb_enc_warn(rb_encoding *enc, const char *fmt, ...)
{
if (!NIL_P(ruby_verbose)) {
with_warning_string(mesg, enc, fmt) {
rb_write_warning_str(mesg);
}
}
}
/* rb_warning() reports only in verbose mode */
void
rb_warning(const char *fmt, ...)
{
if (RTEST(ruby_verbose)) {
with_warning_string(mesg, 0, fmt) {
rb_write_warning_str(mesg);
}
}
}
/* rb_category_warning() reports only in verbose mode */
void
rb_category_warning(rb_warning_category_t category, const char *fmt, ...)
{
if (RTEST(ruby_verbose)) {
with_warning_string(mesg, 0, fmt) {
rb_warn_category(mesg, rb_warning_category_to_name(category));
}
}
}
VALUE
rb_warning_string(const char *fmt, ...)
{
with_warning_string(mesg, 0, fmt) {
}
return mesg;
}
#if 0
void
rb_enc_warning(rb_encoding *enc, const char *fmt, ...)
{
if (RTEST(ruby_verbose)) {
with_warning_string(mesg, enc, fmt) {
rb_write_warning_str(mesg);
}
}
}
#endif
void
rb_warn_deprecated(const char *fmt, const char *suggest, ...)
{
if (NIL_P(ruby_verbose)) return;
if (!rb_warning_category_enabled_p(RB_WARN_CATEGORY_DEPRECATED)) return;
va_list args;
va_start(args, suggest);
VALUE mesg = warning_string(0, fmt, args);
va_end(args);
rb_str_set_len(mesg, RSTRING_LEN(mesg) - 1);
rb_str_cat_cstr(mesg, " is deprecated");
if (suggest) rb_str_catf(mesg, "; use %s instead", suggest);
rb_str_cat_cstr(mesg, "\n");
rb_warn_category(mesg, ID2SYM(id_deprecated));
}
void
rb_warn_deprecated_to_remove(const char *fmt, const char *removal, ...)
{
if (NIL_P(ruby_verbose)) return;
if (!rb_warning_category_enabled_p(RB_WARN_CATEGORY_DEPRECATED)) return;
va_list args;
va_start(args, removal);
VALUE mesg = warning_string(0, fmt, args);
va_end(args);
rb_str_set_len(mesg, RSTRING_LEN(mesg) - 1);
rb_str_catf(mesg, " is deprecated and will be removed in Ruby %s\n", removal);
rb_warn_category(mesg, ID2SYM(id_deprecated));
}
static inline int
end_with_asciichar(VALUE str, int c)
{
return RB_TYPE_P(str, T_STRING) &&
rb_str_end_with_asciichar(str, c);
}
/* :nodoc: */
static VALUE
warning_write(int argc, VALUE *argv, VALUE buf)
{
while (argc-- > 0) {
rb_str_append(buf, *argv++);
}
return buf;
}
VALUE rb_ec_backtrace_location_ary(const rb_execution_context_t *ec, long lev, long n, bool skip_internal);
static VALUE
rb_warn_m(rb_execution_context_t *ec, VALUE exc, VALUE msgs, VALUE uplevel, VALUE category)
{
VALUE location = Qnil;
int argc = RARRAY_LENINT(msgs);
const VALUE *argv = RARRAY_CONST_PTR(msgs);
if (!NIL_P(ruby_verbose) && argc > 0) {
VALUE str = argv[0];
if (!NIL_P(uplevel)) {
long lev = NUM2LONG(uplevel);
if (lev < 0) {
rb_raise(rb_eArgError, "negative level (%ld)", lev);
}
location = rb_ec_backtrace_location_ary(ec, lev + 1, 1, TRUE);
if (!NIL_P(location)) {
location = rb_ary_entry(location, 0);
}
}
if (argc > 1 || !NIL_P(uplevel) || !end_with_asciichar(str, '\n')) {
VALUE path;
if (NIL_P(uplevel)) {
str = rb_str_tmp_new(0);
}
else if (NIL_P(location) ||
NIL_P(path = rb_funcall(location, rb_intern("path"), 0))) {
str = rb_str_new_cstr("warning: ");
}
else {
str = rb_sprintf("%s:%ld: warning: ",
rb_string_value_ptr(&path),
NUM2LONG(rb_funcall(location, rb_intern("lineno"), 0)));
}
RBASIC_SET_CLASS(str, rb_cWarningBuffer);
rb_io_puts(argc, argv, str);
RBASIC_SET_CLASS(str, rb_cString);
}
if (!NIL_P(category)) {
category = rb_to_symbol_type(category);
rb_warning_category_from_name(category);
}
if (exc == rb_mWarning) {
rb_must_asciicompat(str);
rb_write_error_str(str);
}
else {
rb_warn_category(str, category);
}
}
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;
}
FUNC_MINIMIZED(static void bug_important_message(FILE *out, const char *const msg, size_t len));
static void
bug_important_message(FILE *out, const char *const msg, size_t len)
{
const char *const endmsg = msg + len;
const char *p = msg;
if (!len) return;
if (isatty(fileno(out))) {
static const char red[] = "\033[;31;1;7m";
static const char green[] = "\033[;32;7m";
static const char reset[] = "\033[m";
const char *e = strchr(p, '\n');
const int w = (int)(e - p);
do {
int i = (int)(e - p);
fputs(*p == ' ' ? green : red, out);
fwrite(p, 1, e - p, out);
for (; i < w; ++i) fputc(' ', out);
fputs(reset, out);
fputc('\n', out);
} while ((p = e + 1) < endmsg && (e = strchr(p, '\n')) != 0 && e > p + 1);
}
fwrite(p, 1, endmsg - p, out);
}
static void
preface_dump(FILE *out)
{
#if defined __APPLE__
static const char msg[] = ""
"-- Crash Report log information "
"--------------------------------------------\n"
" See Crash Report log file under the one of following:\n"
# if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_6
" * ~/Library/Logs/CrashReporter\n"
" * /Library/Logs/CrashReporter\n"
# endif
" * ~/Library/Logs/DiagnosticReports\n"
" * /Library/Logs/DiagnosticReports\n"
" for more details.\n"
"Don't forget to include the above Crash Report log file in bug reports.\n"
"\n";
const size_t msglen = sizeof(msg) - 1;
#else
const char *msg = NULL;
const size_t msglen = 0;
#endif
bug_important_message(out, msg, msglen);
}
static void
postscript_dump(FILE *out)
{
#if defined __APPLE__
static const char msg[] = ""
"[IMPORTANT]"
/*" ------------------------------------------------"*/
"\n""Don't forget to include the Crash Report log file under\n"
# if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_6
"CrashReporter or "
# endif
"DiagnosticReports directory in bug reports.\n"
/*"------------------------------------------------------------\n"*/
"\n";
const size_t msglen = sizeof(msg) - 1;
#else
const char *msg = NULL;
const size_t msglen = 0;
#endif
bug_important_message(out, msg, msglen);
}
static void
bug_report_begin_valist(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);
preface_dump(out);
}
#define bug_report_begin(out, fmt) do { \
va_list args; \
va_start(args, fmt); \
bug_report_begin_valist(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);
}
}
postscript_dump(out);
}
#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) \
#define report_bug_valist(file, line, fmt, ctx, args) do { \
FILE *out = bug_report_file(file, line); \
if (out) { \
bug_report_begin_valist(out, fmt, args); \
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_without_die(const char *fmt, ...)
{
const char *file = NULL;
int line = 0;
if (GET_EC()) {
file = rb_source_location_cstr(&line);
}
report_bug(file, line, fmt, NULL);
}
void
rb_bug(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
rb_bug_without_die(fmt, args);
va_end(args);
die();
}
void
rb_bug_for_fatal_signal(ruby_sighandler_t default_sighandler, int sig, const void *ctx, const char *fmt, ...)
{
const char *file = NULL;
int line = 0;
if (GET_EC()) {
file = rb_source_location_cstr(&line);
}
report_bug(file, line, fmt, ctx);
if (default_sighandler) default_sighandler(sig);
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));
abort();
}
void
rb_report_bug_valist(VALUE file, int line, const char *fmt, va_list args)
{
report_bug_valist(RSTRING_PTR(file), line, fmt, NULL, args);
}
MJIT_FUNC_EXPORTED 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);
preface_dump(out);
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",
"Integer",
"File",
"Data", /* internal use: wrapped C pointers */
"MatchData", /* data of $~ */
"Complex",
"Rational",
"", /* 0x10 */
"nil",
"true",
"false",
"Symbol", /* :symbol */
"Integer",
"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 VALUE
displaying_class_of(VALUE x)
{
switch (x) {
case Qfalse: return rb_fstring_cstr("false");
case Qnil: return rb_fstring_cstr("nil");
case Qtrue: return rb_fstring_cstr("true");
default: return rb_obj_class(x);
}
}
static const char *
builtin_class_name(VALUE x)
{
const char *etype;
if (NIL_P(x)) {
etype = "nil";
}
else if (FIXNUM_P(x)) {
etype = "Integer";
}
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;
}
NORETURN(static void unexpected_type(VALUE, int, int));
#define UNDEF_LEAKED "undef leaked to the Ruby space"
static void
unexpected_type(VALUE x, int xt, int t)
{
const char *tname = rb_builtin_type_name(t);
VALUE mesg, exc = rb_eFatal;
if (tname) {
mesg = rb_sprintf("wrong argument type %"PRIsVALUE" (expected %s)",
displaying_class_of(x), tname);
exc = rb_eTypeError;
}
else if (xt > T_MASK && xt <= 0x3f) {
mesg = rb_sprintf("unknown type 0x%x (0x%x given, probably comes"
" from extension library for ruby 1.8)", t, xt);
}
else {
mesg = rb_sprintf("unknown type 0x%x (0x%x given)", t, xt);
}
rb_exc_raise(rb_exc_new_str(exc, mesg));
}
void
rb_check_type(VALUE x, int t)
{
int xt;
if (x == Qundef) {
rb_bug(UNDEF_LEAKED);
}
xt = TYPE(x);
if (xt != t || (xt == T_DATA && RTYPEDDATA_P(x))) {
unexpected_type(x, xt, t);
}
}
void