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Feature #12944 » 0001-Change-Kernel-warn-to-call-Warning.warn.patch

flatten array, append newlines to each line, then join - jeremyevans0 (Jeremy Evans), 12/14/2016 03:40 PM

View differences:

error.c
VALUE rb_iseqw_local_variables(VALUE iseqval);
VALUE rb_iseqw_new(const rb_iseq_t *);
int str_end_with_asciichar(VALUE str, int c);
VALUE rb_eEAGAIN;
VALUE rb_eEWOULDBLOCK;
VALUE rb_eEINPROGRESS;
VALUE rb_mWarning;
static ID id_warn;
static ID id_warn, id_flatten_b;
extern const char ruby_description[];
......
* call-seq:
* warn(msg, ...) -> nil
*
* Displays each of the given messages followed by a record separator on
* STDERR unless warnings have been disabled (for example with the
* <code>-W0</code> flag).
*
* If warnings have been disabled (for example with the
* <code>-W0</code> flag), does nothing. Otherwise,
* flattens the array of arguments and converts the
* entries to strings, makes sure all strings end with
* a newline, joins all strings into a single string,
* and calls <code>Warning.warn</code> with the
* resulting string.
*
* warn("warning 1", "warning 2")
* warn(["warning 1\n", "warning 2"])
* warn("warning 1", "warning 2\n")
*
* <em>produces:</em>
* <em>all call <code>Warning.warn</code> with:</em>
*
* warning 1
* warning 2
* "warning 1\nwarning 2\n"
*/
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);
int i;
VALUE str;
VALUE ary = rb_ary_new_from_values(argc, argv);
rb_funcall(ary, id_flatten_b, 0);
Check_Type(ary, T_ARRAY);
argc = RARRAY_LEN(ary);
argv = RARRAY_PTR(ary);
for(i = 0; i < argc; i++) {
str = rb_obj_as_string(argv[i]);
if (RSTRING_LEN(str) == 0 || !str_end_with_asciichar(str, '\n')) {
str = rb_str_cat(rb_str_dup(str), "\n", 1);
}
rb_ary_store(ary, i, str);
}
rb_write_warning_str(rb_ary_join(ary, rb_str_new("", 0)));
}
return Qnil;
}
......
id_errno = rb_intern_const("errno");
id_i_path = rb_intern_const("@path");
id_warn = rb_intern_const("warn");
id_flatten_b = rb_intern_const("flatten!");
id_iseq = rb_make_internal_id();
}
io.c
}
static int
int
str_end_with_asciichar(VALUE str, int c)
{
long len = RSTRING_LEN(str);
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