mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
a25fbe3b3e
* parse.y: encoding aware parsing. * parse.y (pragma_encoding): encoding specification pragma. * parse.y (rb_intern3): encoding specified symbols. * string.c (rb_str_length): length based on characters. for older behavior, bytesize method added. * string.c (rb_str_index_m): index based on characters. rindex as well. * string.c (succ_char): encoding aware succeeding string. * string.c (rb_str_reverse): reverse based on characters. * string.c (rb_str_inspect): encoding aware string description. * string.c (rb_str_upcase_bang): encoding aware case conversion. downcase, capitalize, swapcase as well. * string.c (rb_str_tr_bang): tr based on characters. delete, squeeze, tr_s, count as well. * string.c (rb_str_split_m): split based on characters. * string.c (rb_str_each_line): encoding aware each_line. * string.c (rb_str_each_char): added. iteration based on characters. * string.c (rb_str_strip_bang): encoding aware whitespace stripping. lstrip, rstrip as well. * string.c (rb_str_justify): encoding aware justifying (ljust, rjust, center). * string.c (str_encoding): get encoding attribute from a string. * re.c (rb_reg_initialize): encoding aware regular expression * sprintf.c (rb_str_format): formatting (i.e. length count) based on characters. * io.c (rb_io_getc): getc to return one-character string. for older behavior, getbyte method added. * ext/stringio/stringio.c (strio_getc): ditto. * io.c (rb_io_ungetc): allow pushing arbitrary string at the current reading point. * ext/stringio/stringio.c (strio_ungetc): ditto. * ext/strscan/strscan.c: encoding support. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13261 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
136 lines
3 KiB
C
136 lines
3 KiB
C
/**********************************************************************
|
|
|
|
prec.c -
|
|
|
|
$Author$
|
|
$Date$
|
|
created at: Tue Jan 26 02:40:41 2000
|
|
|
|
Copyright (C) 1993-2007 Yukihiro Matsumoto
|
|
|
|
**********************************************************************/
|
|
|
|
#include "ruby/ruby.h"
|
|
|
|
VALUE rb_mPrecision;
|
|
|
|
static ID prc_pr, prc_if;
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* num.prec(klass) => a_klass
|
|
*
|
|
* Converts _self_ into an instance of _klass_. By default,
|
|
* +prec+ invokes
|
|
*
|
|
* klass.induced_from(num)
|
|
*
|
|
* and returns its value. So, if <code>klass.induced_from</code>
|
|
* doesn't return an instance of _klass_, it will be necessary
|
|
* to reimplement +prec+.
|
|
*/
|
|
|
|
static VALUE
|
|
prec_prec(VALUE x, VALUE klass)
|
|
{
|
|
return rb_funcall(klass, prc_if, 1, x);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* num.prec_i => Integer
|
|
*
|
|
* Returns an +Integer+ converted from _num_. It is equivalent
|
|
* to <code>prec(Integer)</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
prec_prec_i(VALUE x)
|
|
{
|
|
VALUE klass = rb_cInteger;
|
|
|
|
return rb_funcall(x, prc_pr, 1, klass);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* num.prec_f => Float
|
|
*
|
|
* Returns a +Float+ converted from _num_. It is equivalent
|
|
* to <code>prec(Float)</code>.
|
|
*/
|
|
|
|
static VALUE
|
|
prec_prec_f(VALUE x)
|
|
{
|
|
VALUE klass = rb_cFloat;
|
|
|
|
return rb_funcall(x, prc_pr, 1, klass);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Mod.induced_from(number) => a_mod
|
|
*
|
|
* Creates an instance of mod from. This method is overridden
|
|
* by concrete +Numeric+ classes, so that (for example)
|
|
*
|
|
* Fixnum.induced_from(9.9) #=> 9
|
|
*
|
|
* Note that a use of +prec+ in a redefinition may cause
|
|
* an infinite loop.
|
|
*/
|
|
|
|
static VALUE
|
|
prec_induced_from(VALUE module, VALUE x)
|
|
{
|
|
rb_raise(rb_eTypeError, "undefined conversion from %s into %s",
|
|
rb_obj_classname(x), rb_class2name(module));
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
/*
|
|
* call_seq:
|
|
* included
|
|
*
|
|
* When the +Precision+ module is mixed-in to a class, this +included+
|
|
* method is used to add our default +induced_from+ implementation
|
|
* to the host class.
|
|
*/
|
|
|
|
static VALUE
|
|
prec_included(VALUE module, VALUE include)
|
|
{
|
|
switch (TYPE(include)) {
|
|
case T_CLASS:
|
|
case T_MODULE:
|
|
break;
|
|
default:
|
|
Check_Type(include, T_CLASS);
|
|
break;
|
|
}
|
|
rb_define_singleton_method(include, "induced_from", prec_induced_from, 1);
|
|
return module;
|
|
}
|
|
|
|
/*
|
|
* Precision is a mixin for concrete numeric classes with
|
|
* precision. Here, `precision' means the fineness of approximation
|
|
* of a real number, so, this module should not be included into
|
|
* anything which is not a subset of Real (so it should not be
|
|
* included in classes such as +Complex+ or +Matrix+).
|
|
*/
|
|
|
|
void
|
|
Init_Precision(void)
|
|
{
|
|
rb_mPrecision = rb_define_module("Precision");
|
|
rb_define_singleton_method(rb_mPrecision, "included", prec_included, 1);
|
|
rb_define_method(rb_mPrecision, "prec", prec_prec, 1);
|
|
rb_define_method(rb_mPrecision, "prec_i", prec_prec_i, 0);
|
|
rb_define_method(rb_mPrecision, "prec_f", prec_prec_f, 0);
|
|
|
|
prc_pr = rb_intern("prec");
|
|
prc_if = rb_intern("induced_from");
|
|
}
|