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ruby--ruby/error.c
ko1 f58eb1e276 * eval.c: remove ruby_current_node and change eval() prototype. 
fix to use rb_sourcefile/line() instead of ruby_sourcefile/line.
* error.c, eval_error.ci, eval_load.c, eval_safe.ci, gc.c,
  include/ruby/intern.h, parse.y, process.c, ruby.c: ditto.
* vm.c: fix spaces.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12608 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2007-06-24 20:33:04 +00:00

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/**********************************************************************
error.c -
$Author$
$Date$
created at: Mon Aug 9 16:11:34 JST 1993
Copyright (C) 1993-2003 Yukihiro Matsumoto
**********************************************************************/
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "yarvcore.h"
#include <stdio.h>
#include <stdarg.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#endif
extern const char ruby_version[], ruby_release_date[], ruby_platform[];
int ruby_nerrs;
static int
err_position_0(char *buf, long len, const char *file, long 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 int
err_position(char *buf, long len)
{
return err_position_0(buf, len, rb_sourcefile(), rb_sourceline());
}
static int
compile_position(char *buf, long len)
{
return err_position_0(buf, len, rb_sourcefile(), rb_sourceline());
}
static void
err_snprintf(char *buf, long len, const char *fmt, va_list args)
{
long n;
n = err_position(buf, len);
if (len > n) {
vsnprintf((char*)buf+n, len-n, fmt, args);
}
}
static void
compile_snprintf(char *buf, long len, const char *fmt, va_list args)
{
long n;
n = compile_position(buf, len);
if (len > n) {
vsnprintf((char*)buf+n, len-n, fmt, args);
}
}
static void err_append(const char*);
void
rb_compile_error(const char *fmt, ...)
{
va_list args;
char buf[BUFSIZ];
va_start(args, fmt);
compile_snprintf(buf, BUFSIZ, fmt, args);
va_end(args);
err_append(buf);
ruby_nerrs++;
}
void
rb_compile_error_append(const char *fmt, ...)
{
va_list args;
char buf[BUFSIZ];
va_start(args, fmt);
vsnprintf(buf, BUFSIZ, fmt, args);
va_end(args);
err_append(buf);
}
static void
compile_warn_print(const char *fmt, va_list args)
{
char buf[BUFSIZ];
int len;
compile_snprintf(buf, BUFSIZ, fmt, args);
len = strlen(buf);
buf[len++] = '\n';
rb_write_error2(buf, len);
}
void
rb_compile_warn(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list args;
if (NIL_P(ruby_verbose)) return;
snprintf(buf, BUFSIZ, "warning: %s", fmt);
va_start(args, fmt);
compile_warn_print(buf, args);
va_end(args);
}
/* rb_compile_warning() reports only in verbose mode */
void
rb_compile_warning(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list args;
if (!RTEST(ruby_verbose)) return;
snprintf(buf, BUFSIZ, "warning: %s", fmt);
va_start(args, fmt);
compile_warn_print(buf, args);
va_end(args);
}
static void
warn_print(const char *fmt, va_list args)
{
char buf[BUFSIZ];
int len;
err_snprintf(buf, BUFSIZ, fmt, args);
len = strlen(buf);
buf[len++] = '\n';
rb_write_error2(buf, len);
}
void
rb_warn(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list args;
if (NIL_P(ruby_verbose)) return;
snprintf(buf, BUFSIZ, "warning: %s", fmt);
va_start(args, fmt);
warn_print(buf, args);
va_end(args);
}
/* rb_warning() reports only in verbose mode */
void
rb_warning(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list args;
if (!RTEST(ruby_verbose)) return;
snprintf(buf, BUFSIZ, "warning: %s", fmt);
va_start(args, fmt);
warn_print(buf, args);
va_end(args);
}
/*
* call-seq:
* warn(msg) => nil
*
* Display the given message (followed by a newline) on STDERR unless
* warnings are disabled (for example with the <code>-W0</code> flag).
*/
static VALUE
rb_warn_m(VALUE self, VALUE mesg)
{
if (!NIL_P(ruby_verbose)) {
rb_io_write(rb_stderr, mesg);
rb_io_write(rb_stderr, rb_default_rs);
}
return Qnil;
}
void yarv_bug(void);
void
rb_bug(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list args;
FILE *out = stderr;
int len = err_position(buf, BUFSIZ);
if (fwrite(buf, 1, len, out) == len ||
fwrite(buf, 1, len, (out = stdout)) == len) {
yarv_bug();
fputs("[BUG] ", out);
va_start(args, fmt);
vfprintf(out, fmt, args);
va_end(args);
fprintf(out, "\nruby %s (%s) [%s]\n\n",
ruby_version, ruby_release_date, ruby_platform);
}
abort();
}
static struct types {
int type;
const char *name;
} builtin_types[] = {
{T_NIL, "nil"},
{T_OBJECT, "Object"},
{T_CLASS, "Class"},
{T_ICLASS, "iClass"}, /* internal use: mixed-in module holder */
{T_MODULE, "Module"},
{T_FLOAT, "Float"},
{T_STRING, "String"},
{T_REGEXP, "Regexp"},
{T_ARRAY, "Array"},
{T_FIXNUM, "Fixnum"},
{T_HASH, "Hash"},
{T_STRUCT, "Struct"},
{T_BIGNUM, "Bignum"},
{T_FILE, "File"},
{T_TRUE, "true"},
{T_FALSE, "false"},
{T_SYMBOL, "Symbol"}, /* :symbol */
{T_DATA, "Data"}, /* internal use: wrapped C pointers */
{T_MATCH, "MatchData"}, /* data of $~ */
{T_NODE, "Node"}, /* internal use: syntax tree node */
{T_UNDEF, "undef"}, /* internal use: #undef; should not happen */
{-1, 0}
};
void
rb_check_type(VALUE x, int t)
{
struct types *type = builtin_types;
if (x == Qundef) {
rb_bug("undef leaked to the Ruby space");
}
if (TYPE(x) != t) {
while (type->type >= 0) {
if (type->type == t) {
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_special_const_p(x)) {
etype = RSTRING_PTR(rb_obj_as_string(x));
}
else {
etype = rb_obj_classname(x);
}
rb_raise(rb_eTypeError, "wrong argument type %s (expected %s)",
etype, type->name);
}
type++;
}
rb_bug("unknown type 0x%x (0x%x given)", t, TYPE(x));
}
}
/* exception classes */
#include <errno.h>
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_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 eNOERROR;
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_new2(VALUE etype, const char *s)
{
return rb_exc_new(etype, s, strlen(s));
}
VALUE
rb_exc_new3(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 <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, rb_intern("mesg"));
if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
if (OBJ_TAINTED(exc)) OBJ_TAINT(mesg);
return 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_funcall(exc, rb_intern("to_s"), 0, 0);
}
/*
* call-seq:
* exception.inspect => string
*
* Return this exception's class name an 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)
{
ID bt = rb_intern("bt");
if (!rb_ivar_defined(exc, bt)) return Qnil;
return rb_ivar_get(exc, bt);
}
static VALUE
check_backtrace(VALUE bt)
{
long i;
static const char *err = "backtrace must be Array of String";
if (!NIL_P(bt)) {
int t = TYPE(bt);
if (t == T_STRING) return rb_ary_new3(1, bt);
if (t != T_ARRAY) {
rb_raise(rb_eTypeError, err);
}
for (i=0;i<RARRAY_LEN(bt);i++) {
if (TYPE(RARRAY_PTR(bt)[i]) != T_STRING) {
rb_raise(rb_eTypeError, err);
}
}
}
return bt;
}
/*
* call-seq:
* exc.set_backtrace(array) => array
*
* Sets the backtrace information associated with <i>exc</i>. The
* argument must be an array of <code>String</code> objects in the
* format described in <code>Exception#backtrace</code>.
*
*/
static VALUE
exc_set_backtrace(VALUE exc, VALUE bt)
{
return rb_iv_set(exc, "bt", check_backtrace(bt));
}
/*
* 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)
{
ID id_mesg = rb_intern("mesg");
if (exc == obj) return Qtrue;
if (rb_obj_class(exc) != rb_obj_class(obj))
return Qfalse;
if (!rb_equal(rb_attr_get(exc, id_mesg), rb_attr_get(obj, id_mesg)))
return Qfalse;
if (!rb_equal(exc_backtrace(exc), exc_backtrace(obj)))
return Qfalse;
return Qtrue;
}
/*
* call-seq:
* SystemExit.new(status=0) => system_exit
*
* Create a new +SystemExit+ exception with the given status.
*/
static VALUE
exit_initialize(int argc, VALUE *argv, VALUE exc)
{
VALUE status = INT2FIX(EXIT_SUCCESS);
if (argc > 0 && FIXNUM_P(argv[0])) {
status = *argv++;
--argc;
}
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 = rb_attr_get(exc, rb_intern("status"));
if (NIL_P(status)) return Qtrue;
if (status == INT2FIX(EXIT_SUCCESS)) return Qtrue;
return Qfalse;
}
void
rb_name_error(ID id, const char *fmt, ...)
{
VALUE exc, argv[2];
va_list args;
char buf[BUFSIZ];
va_start(args, fmt);
vsnprintf(buf, BUFSIZ, fmt, args);
va_end(args);
argv[0] = rb_str_new2(buf);
argv[1] = ID2SYM(id);
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;
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:
* name_error.to_s => string
*
* Produce a nicely-formated string representing the +NameError+.
*/
static VALUE
name_err_to_s(VALUE exc)
{
VALUE mesg = rb_attr_get(exc, rb_intern("mesg"));
VALUE str = mesg;
if (NIL_P(mesg)) return rb_class_name(CLASS_OF(exc));
StringValue(str);
if (str != mesg) {
rb_iv_set(exc, "mesg", mesg = str);
}
if (OBJ_TAINTED(exc)) OBJ_TAINT(mesg);
return mesg;
}
/*
* 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_iv_set(self, "args", args);
return self;
}
/* :nodoc: */
static void
name_err_mesg_mark(VALUE *ptr)
{
rb_gc_mark_locations(ptr, ptr+3);
}
/* :nodoc: */
static VALUE
name_err_mesg_new(VALUE obj, VALUE mesg, VALUE recv, VALUE method)
{
VALUE *ptr = ALLOC_N(VALUE, 3);
ptr[0] = mesg;
ptr[1] = recv;
ptr[2] = method;
return Data_Wrap_Struct(rb_cNameErrorMesg, name_err_mesg_mark, -1, ptr);
}
/* :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;
Data_Get_Struct(obj1, VALUE, ptr1);
Data_Get_Struct(obj2, VALUE, ptr2);
for (i=0; i<3; 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;
Data_Get_Struct(obj, VALUE, ptr);
mesg = ptr[0];
if (NIL_P(mesg)) return Qnil;
else {
const char *desc = 0;
VALUE d = 0, args[3];
obj = ptr[1];
switch (TYPE(obj)) {
case T_NIL:
desc = "nil";
break;
case T_TRUE:
desc = "true";
break;
case T_FALSE:
desc = "false";
break;
default:
d = rb_protect(rb_inspect, obj, 0);
if (NIL_P(d) || RSTRING_LEN(d) > 65) {
d = rb_any_to_s(obj);
}
desc = RSTRING_PTR(d);
break;
}
if (desc && desc[0] != '#') {
d = rb_str_new2(desc);
rb_str_cat2(d, ":");
rb_str_cat2(d, rb_obj_classname(obj));
}
args[0] = mesg;
args[1] = ptr[2];
args[2] = d;
mesg = rb_f_sprintf(3, args);
}
if (OBJ_TAINTED(obj)) OBJ_TAINT(mesg);
return mesg;
}
/* :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_inspect(rb_str_new2(str));
rb_raise(rb_eArgError, "invalid value for %s: %s", type, RSTRING_PTR(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)
{
VALUE error;
if (!st_lookup(syserr_tbl, n, &error)) {
error = rb_define_class_under(rb_mErrno, name, rb_eSystemCallError);
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)
{
VALUE 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) && !defined(__VMS)
char *strerror();
#endif
const char *err;
VALUE mesg, error;
VALUE klass = rb_obj_class(self);
if (klass == rb_eSystemCallError) {
rb_scan_args(argc, argv, "11", &mesg, &error);
if (argc == 1 && FIXNUM_P(mesg)) {
error = mesg; mesg = Qnil;
}
if (!NIL_P(error) && st_lookup(syserr_tbl, NUM2LONG(error), &klass)) {
/* change class */
if (TYPE(self) != T_OBJECT) { /* insurance to avoid type crash */
rb_raise(rb_eTypeError, "invalid instance type");
}
RBASIC(self)->klass = klass;
}
}
else {
rb_scan_args(argc, argv, "01", &mesg);
error = rb_const_get(klass, rb_intern("Errno"));
}
if (!NIL_P(error)) err = strerror(NUM2LONG(error));
else err = "unknown error";
if (!NIL_P(mesg)) {
VALUE str = mesg;
StringValue(str);
mesg = rb_sprintf("%s - %.*s", err,
(int)RSTRING_LEN(str), RSTRING_PTR(str));
}
else {
mesg = rb_str_new2(err);
}
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;
if (!rb_obj_is_kind_of(exc, rb_eSystemCallError)) return Qfalse;
if (self == rb_eSystemCallError) return Qtrue;
num = rb_attr_get(exc, rb_intern("errno"));
if (NIL_P(num)) {
VALUE klass = CLASS_OF(exc);
while (TYPE(klass) == T_ICLASS || FL_TEST(klass, FL_SINGLETON)) {
klass = (VALUE)RCLASS(klass)->super;
}
num = rb_const_get(klass, rb_intern("Errno"));
}
e = rb_const_get(self, rb_intern("Errno"));
if (FIXNUM_P(num) ? num == e : rb_equal(num, e))
return Qtrue;
return Qfalse;
}
/*
* call-seq:
* Errno.const_missing => SystemCallError
*
* Returns default SystemCallError class.
*/
static VALUE
errno_missing(VALUE self, VALUE id)
{
return eNOERROR;
}
/*
* Descendents of class <code>Exception</code> are used to communicate
* between <code>raise</code> methods and <code>rescue</code>
* statements in <code>begin/end</code> blocks. <code>Exception</code>
* objects carry information about the exception---its type (the
* exception's class name), an optional descriptive string, and
* optional traceback information. Programs may subclass
* <code>Exception</code> to add additional information.
*/
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, "set_backtrace", exc_set_backtrace, 1);
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);
rb_eNotImpError = rb_define_class("NotImplementedError", rb_eScriptError);
rb_eNameError = rb_define_class("NameError", rb_eScriptError);
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, "to_s", name_err_to_s, 0);
rb_cNameErrorMesg = rb_define_class_under(rb_eNameError, "message", rb_cData);
rb_define_singleton_method(rb_cNameErrorMesg, "!", name_err_mesg_new, 3);
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_to_str, 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_eStandardError);
rb_eNoMemError = rb_define_class("NoMemoryError", rb_eException);
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_singleton_method(rb_mErrno, "const_missing", errno_missing, 1);
rb_define_global_function("warn", rb_warn_m, 1);
}
void
rb_raise(VALUE exc, const char *fmt, ...)
{
va_list args;
char buf[BUFSIZ];
va_start(args,fmt);
vsnprintf(buf, BUFSIZ, fmt, args);
va_end(args);
rb_exc_raise(rb_exc_new2(exc, buf));
}
void
rb_loaderror(const char *fmt, ...)
{
va_list args;
char buf[BUFSIZ];
va_start(args, fmt);
vsnprintf(buf, BUFSIZ, fmt, args);
va_end(args);
rb_exc_raise(rb_exc_new2(rb_eLoadError, buf));
}
void
rb_notimplement(void)
{
rb_raise(rb_eNotImpError,
"%s() function is unimplemented on this machine",
rb_id2name(rb_frame_this_func()));
}
void
rb_fatal(const char *fmt, ...)
{
va_list args;
char buf[BUFSIZ];
va_start(args, fmt);
vsnprintf(buf, BUFSIZ, fmt, args);
va_end(args);
rb_exc_fatal(rb_exc_new2(rb_eFatal, buf));
}
void
rb_sys_fail(const char *mesg)
{
int n = errno;
VALUE arg;
errno = 0;
if (n == 0) {
rb_bug("rb_sys_fail(%s) - errno == 0", mesg ? mesg : "");
}
arg = mesg ? rb_str_new2(mesg) : Qnil;
rb_exc_raise(rb_class_new_instance(1, &arg, get_syserr(n)));
}
void
rb_sys_warning(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list args;
int errno_save;
errno_save = errno;
if (!RTEST(ruby_verbose)) return;
snprintf(buf, BUFSIZ, "warning: %s", fmt);
snprintf(buf+strlen(buf), BUFSIZ-strlen(buf), ": %s", strerror(errno_save));
va_start(args, fmt);
warn_print(buf, args);
va_end(args);
errno = errno_save;
}
void
rb_load_fail(const char *path)
{
rb_loaderror("%s -- %s", strerror(errno), path);
}
void
rb_error_frozen(const char *what)
{
rb_raise(rb_eRuntimeError, "can't modify frozen %s", what);
}
void
rb_check_frozen(VALUE obj)
{
if (OBJ_FROZEN(obj)) rb_error_frozen(rb_obj_classname(obj));
}
void
Init_syserr(void)
{
#ifdef EPERM
set_syserr(EPERM, "EPERM");
#endif
#ifdef ENOENT
set_syserr(ENOENT, "ENOENT");
#endif
#ifdef ESRCH
set_syserr(ESRCH, "ESRCH");
#endif
#ifdef EINTR
set_syserr(EINTR, "EINTR");
#endif
#ifdef EIO
set_syserr(EIO, "EIO");
#endif
#ifdef ENXIO
set_syserr(ENXIO, "ENXIO");
#endif
#ifdef E2BIG
set_syserr(E2BIG, "E2BIG");
#endif
#ifdef ENOEXEC
set_syserr(ENOEXEC, "ENOEXEC");
#endif
#ifdef EBADF
set_syserr(EBADF, "EBADF");
#endif
#ifdef ECHILD
set_syserr(ECHILD, "ECHILD");
#endif
#ifdef EAGAIN
set_syserr(EAGAIN, "EAGAIN");
#endif
#ifdef ENOMEM
set_syserr(ENOMEM, "ENOMEM");
#endif
#ifdef EACCES
set_syserr(EACCES, "EACCES");
#endif
#ifdef EFAULT
set_syserr(EFAULT, "EFAULT");
#endif
#ifdef ENOTBLK
set_syserr(ENOTBLK, "ENOTBLK");
#endif
#ifdef EBUSY
set_syserr(EBUSY, "EBUSY");
#endif
#ifdef EEXIST
set_syserr(EEXIST, "EEXIST");
#endif
#ifdef EXDEV
set_syserr(EXDEV, "EXDEV");
#endif
#ifdef ENODEV
set_syserr(ENODEV, "ENODEV");
#endif
#ifdef ENOTDIR
set_syserr(ENOTDIR, "ENOTDIR");
#endif
#ifdef EISDIR
set_syserr(EISDIR, "EISDIR");
#endif
#ifdef EINVAL
set_syserr(EINVAL, "EINVAL");
#endif
#ifdef ENFILE
set_syserr(ENFILE, "ENFILE");
#endif
#ifdef EMFILE
set_syserr(EMFILE, "EMFILE");
#endif
#ifdef ENOTTY
set_syserr(ENOTTY, "ENOTTY");
#endif
#ifdef ETXTBSY
set_syserr(ETXTBSY, "ETXTBSY");
#endif
#ifdef EFBIG
set_syserr(EFBIG, "EFBIG");
#endif
#ifdef ENOSPC
set_syserr(ENOSPC, "ENOSPC");
#endif
#ifdef ESPIPE
set_syserr(ESPIPE, "ESPIPE");
#endif
#ifdef EROFS
set_syserr(EROFS, "EROFS");
#endif
#ifdef EMLINK
set_syserr(EMLINK, "EMLINK");
#endif
#ifdef EPIPE
set_syserr(EPIPE, "EPIPE");
#endif
#ifdef EDOM
set_syserr(EDOM, "EDOM");
#endif
#ifdef ERANGE
set_syserr(ERANGE, "ERANGE");
#endif
#ifdef EDEADLK
set_syserr(EDEADLK, "EDEADLK");
#endif
#ifdef ENAMETOOLONG
set_syserr(ENAMETOOLONG, "ENAMETOOLONG");
#endif
#ifdef ENOLCK
set_syserr(ENOLCK, "ENOLCK");
#endif
#ifdef ENOSYS
set_syserr(ENOSYS, "ENOSYS");
#endif
#ifdef ENOTEMPTY
set_syserr(ENOTEMPTY, "ENOTEMPTY");
#endif
#ifdef ELOOP
set_syserr(ELOOP, "ELOOP");
#endif
#ifdef EWOULDBLOCK
set_syserr(EWOULDBLOCK, "EWOULDBLOCK");
#endif
#ifdef ENOMSG
set_syserr(ENOMSG, "ENOMSG");
#endif
#ifdef EIDRM
set_syserr(EIDRM, "EIDRM");
#endif
#ifdef ECHRNG
set_syserr(ECHRNG, "ECHRNG");
#endif
#ifdef EL2NSYNC
set_syserr(EL2NSYNC, "EL2NSYNC");
#endif
#ifdef EL3HLT
set_syserr(EL3HLT, "EL3HLT");
#endif
#ifdef EL3RST
set_syserr(EL3RST, "EL3RST");
#endif
#ifdef ELNRNG
set_syserr(ELNRNG, "ELNRNG");
#endif
#ifdef EUNATCH
set_syserr(EUNATCH, "EUNATCH");
#endif
#ifdef ENOCSI
set_syserr(ENOCSI, "ENOCSI");
#endif
#ifdef EL2HLT
set_syserr(EL2HLT, "EL2HLT");
#endif
#ifdef EBADE
set_syserr(EBADE, "EBADE");
#endif
#ifdef EBADR
set_syserr(EBADR, "EBADR");
#endif
#ifdef EXFULL
set_syserr(EXFULL, "EXFULL");
#endif
#ifdef ENOANO
set_syserr(ENOANO, "ENOANO");
#endif
#ifdef EBADRQC
set_syserr(EBADRQC, "EBADRQC");
#endif
#ifdef EBADSLT
set_syserr(EBADSLT, "EBADSLT");
#endif
#ifdef EDEADLOCK
set_syserr(EDEADLOCK, "EDEADLOCK");
#endif
#ifdef EBFONT
set_syserr(EBFONT, "EBFONT");
#endif
#ifdef ENOSTR
set_syserr(ENOSTR, "ENOSTR");
#endif
#ifdef ENODATA
set_syserr(ENODATA, "ENODATA");
#endif
#ifdef ETIME
set_syserr(ETIME, "ETIME");
#endif
#ifdef ENOSR
set_syserr(ENOSR, "ENOSR");
#endif
#ifdef ENONET
set_syserr(ENONET, "ENONET");
#endif
#ifdef ENOPKG
set_syserr(ENOPKG, "ENOPKG");
#endif
#ifdef EREMOTE
set_syserr(EREMOTE, "EREMOTE");
#endif
#ifdef ENOLINK
set_syserr(ENOLINK, "ENOLINK");
#endif
#ifdef EADV
set_syserr(EADV, "EADV");
#endif
#ifdef ESRMNT
set_syserr(ESRMNT, "ESRMNT");
#endif
#ifdef ECOMM
set_syserr(ECOMM, "ECOMM");
#endif
#ifdef EPROTO
set_syserr(EPROTO, "EPROTO");
#endif
#ifdef EMULTIHOP
set_syserr(EMULTIHOP, "EMULTIHOP");
#endif
#ifdef EDOTDOT
set_syserr(EDOTDOT, "EDOTDOT");
#endif
#ifdef EBADMSG
set_syserr(EBADMSG, "EBADMSG");
#endif
#ifdef EOVERFLOW
set_syserr(EOVERFLOW, "EOVERFLOW");
#endif
#ifdef ENOTUNIQ
set_syserr(ENOTUNIQ, "ENOTUNIQ");
#endif
#ifdef EBADFD
set_syserr(EBADFD, "EBADFD");
#endif
#ifdef EREMCHG
set_syserr(EREMCHG, "EREMCHG");
#endif
#ifdef ELIBACC
set_syserr(ELIBACC, "ELIBACC");
#endif
#ifdef ELIBBAD
set_syserr(ELIBBAD, "ELIBBAD");
#endif
#ifdef ELIBSCN
set_syserr(ELIBSCN, "ELIBSCN");
#endif
#ifdef ELIBMAX
set_syserr(ELIBMAX, "ELIBMAX");
#endif
#ifdef ELIBEXEC
set_syserr(ELIBEXEC, "ELIBEXEC");
#endif
#ifdef EILSEQ
set_syserr(EILSEQ, "EILSEQ");
#endif
#ifdef ERESTART
set_syserr(ERESTART, "ERESTART");
#endif
#ifdef ESTRPIPE
set_syserr(ESTRPIPE, "ESTRPIPE");
#endif
#ifdef EUSERS
set_syserr(EUSERS, "EUSERS");
#endif
#ifdef ENOTSOCK
set_syserr(ENOTSOCK, "ENOTSOCK");
#endif
#ifdef EDESTADDRREQ
set_syserr(EDESTADDRREQ, "EDESTADDRREQ");
#endif
#ifdef EMSGSIZE
set_syserr(EMSGSIZE, "EMSGSIZE");
#endif
#ifdef EPROTOTYPE
set_syserr(EPROTOTYPE, "EPROTOTYPE");
#endif
#ifdef ENOPROTOOPT
set_syserr(ENOPROTOOPT, "ENOPROTOOPT");
#endif
#ifdef EPROTONOSUPPORT
set_syserr(EPROTONOSUPPORT, "EPROTONOSUPPORT");
#endif
#ifdef ESOCKTNOSUPPORT
set_syserr(ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT");
#endif
#ifdef EOPNOTSUPP
set_syserr(EOPNOTSUPP, "EOPNOTSUPP");
#endif
#ifdef EPFNOSUPPORT
set_syserr(EPFNOSUPPORT, "EPFNOSUPPORT");
#endif
#ifdef EAFNOSUPPORT
set_syserr(EAFNOSUPPORT, "EAFNOSUPPORT");
#endif
#ifdef EADDRINUSE
set_syserr(EADDRINUSE, "EADDRINUSE");
#endif
#ifdef EADDRNOTAVAIL
set_syserr(EADDRNOTAVAIL, "EADDRNOTAVAIL");
#endif
#ifdef ENETDOWN
set_syserr(ENETDOWN, "ENETDOWN");
#endif
#ifdef ENETUNREACH
set_syserr(ENETUNREACH, "ENETUNREACH");
#endif
#ifdef ENETRESET
set_syserr(ENETRESET, "ENETRESET");
#endif
#ifdef ECONNABORTED
set_syserr(ECONNABORTED, "ECONNABORTED");
#endif
#ifdef ECONNRESET
set_syserr(ECONNRESET, "ECONNRESET");
#endif
#ifdef ENOBUFS
set_syserr(ENOBUFS, "ENOBUFS");
#endif
#ifdef EISCONN
set_syserr(EISCONN, "EISCONN");
#endif
#ifdef ENOTCONN
set_syserr(ENOTCONN, "ENOTCONN");
#endif
#ifdef ESHUTDOWN
set_syserr(ESHUTDOWN, "ESHUTDOWN");
#endif
#ifdef ETOOMANYREFS
set_syserr(ETOOMANYREFS, "ETOOMANYREFS");
#endif
#ifdef ETIMEDOUT
set_syserr(ETIMEDOUT, "ETIMEDOUT");
#endif
#ifdef ECONNREFUSED
set_syserr(ECONNREFUSED, "ECONNREFUSED");
#endif
#ifdef EHOSTDOWN
set_syserr(EHOSTDOWN, "EHOSTDOWN");
#endif
#ifdef EHOSTUNREACH
set_syserr(EHOSTUNREACH, "EHOSTUNREACH");
#endif
#ifdef EALREADY
set_syserr(EALREADY, "EALREADY");
#endif
#ifdef EINPROGRESS
set_syserr(EINPROGRESS, "EINPROGRESS");
#endif
#ifdef ESTALE
set_syserr(ESTALE, "ESTALE");
#endif
#ifdef EUCLEAN
set_syserr(EUCLEAN, "EUCLEAN");
#endif
#ifdef ENOTNAM
set_syserr(ENOTNAM, "ENOTNAM");
#endif
#ifdef ENAVAIL
set_syserr(ENAVAIL, "ENAVAIL");
#endif
#ifdef EISNAM
set_syserr(EISNAM, "EISNAM");
#endif
#ifdef EREMOTEIO
set_syserr(EREMOTEIO, "EREMOTEIO");
#endif
#ifdef EDQUOT
set_syserr(EDQUOT, "EDQUOT");
#endif
eNOERROR = set_syserr(0, "NOERROR");
}
static void
err_append(const char *s)
{
rb_thread_t *th = GET_THREAD();
if (th->parse_in_eval) {
if (NIL_P(th->errinfo)) {
th->errinfo = rb_exc_new2(rb_eSyntaxError, s);
}
else {
VALUE str = rb_obj_as_string(GET_THREAD()->errinfo);
rb_str_cat2(str, "\n");
rb_str_cat2(str, s);
th->errinfo = rb_exc_new3(rb_eSyntaxError, str);
}
}
else {
rb_write_error(s);
rb_write_error("\n");
}
}
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