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auto merge of #5607 : brson/rust/shapshot3, r=brson
2 parents 86024e3 + 145f66f commit e16f94f

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src/libcore/unstable/extfmt.rs

-189
Original file line numberDiff line numberDiff line change
@@ -470,9 +470,6 @@ pub mod ct {
470470
// decisions made a runtime. If it proves worthwhile then some of these
471471
// conditions can be evaluated at compile-time. For now though it's cleaner to
472472
// implement it this way, I think.
473-
#[cfg(stage1)]
474-
#[cfg(stage2)]
475-
#[cfg(stage3)]
476473
#[doc(hidden)]
477474
pub mod rt {
478475
use float;
@@ -676,192 +673,6 @@ pub mod rt {
676673
}
677674
}
678675
679-
// XXX: remove after a snapshot of the above changes have gone in
680-
#[cfg(stage0)]
681-
#[doc(hidden)]
682-
pub mod rt {
683-
use float;
684-
use str;
685-
use sys;
686-
use uint;
687-
use vec;
688-
689-
pub static flag_none : u32 = 0u32;
690-
pub static flag_left_justify : u32 = 0b00000000000001u32;
691-
pub static flag_left_zero_pad : u32 = 0b00000000000010u32;
692-
pub static flag_space_for_sign : u32 = 0b00000000000100u32;
693-
pub static flag_sign_always : u32 = 0b00000000001000u32;
694-
pub static flag_alternate : u32 = 0b00000000010000u32;
695-
696-
pub enum Count { CountIs(uint), CountImplied, }
697-
698-
pub enum Ty { TyDefault, TyBits, TyHexUpper, TyHexLower, TyOctal, }
699-
700-
pub struct Conv {
701-
flags: u32,
702-
width: Count,
703-
precision: Count,
704-
ty: Ty,
705-
}
706-
707-
pub fn conv_int(cv: Conv, i: int) -> ~str {
708-
let radix = 10;
709-
let prec = get_int_precision(cv);
710-
let mut s : ~str = int_to_str_prec(i, radix, prec);
711-
if 0 <= i {
712-
if have_flag(cv.flags, flag_sign_always) {
713-
unsafe { str::unshift_char(&mut s, '+') };
714-
} else if have_flag(cv.flags, flag_space_for_sign) {
715-
unsafe { str::unshift_char(&mut s, ' ') };
716-
}
717-
}
718-
return unsafe { pad(cv, s, PadSigned) };
719-
}
720-
pub fn conv_uint(cv: Conv, u: uint) -> ~str {
721-
let prec = get_int_precision(cv);
722-
let mut rs =
723-
match cv.ty {
724-
TyDefault => uint_to_str_prec(u, 10, prec),
725-
TyHexLower => uint_to_str_prec(u, 16, prec),
726-
TyHexUpper => str::to_upper(uint_to_str_prec(u, 16, prec)),
727-
TyBits => uint_to_str_prec(u, 2, prec),
728-
TyOctal => uint_to_str_prec(u, 8, prec)
729-
};
730-
return unsafe { pad(cv, rs, PadUnsigned) };
731-
}
732-
pub fn conv_bool(cv: Conv, b: bool) -> ~str {
733-
let s = if b { ~"true" } else { ~"false" };
734-
// run the boolean conversion through the string conversion logic,
735-
// giving it the same rules for precision, etc.
736-
return conv_str(cv, s);
737-
}
738-
pub fn conv_char(cv: Conv, c: char) -> ~str {
739-
let mut s = str::from_char(c);
740-
return unsafe { pad(cv, s, PadNozero) };
741-
}
742-
pub fn conv_str(cv: Conv, s: &str) -> ~str {
743-
// For strings, precision is the maximum characters
744-
// displayed
745-
let mut unpadded = match cv.precision {
746-
CountImplied => s.to_owned(),
747-
CountIs(max) => if (max as uint) < str::char_len(s) {
748-
str::substr(s, 0, max as uint).to_owned()
749-
} else {
750-
s.to_owned()
751-
}
752-
};
753-
return unsafe { pad(cv, unpadded, PadNozero) };
754-
}
755-
pub fn conv_float(cv: Conv, f: float) -> ~str {
756-
let (to_str, digits) = match cv.precision {
757-
CountIs(c) => (float::to_str_exact, c as uint),
758-
CountImplied => (float::to_str_digits, 6u)
759-
};
760-
let mut s = unsafe { to_str(f, digits) };
761-
if 0.0 <= f {
762-
if have_flag(cv.flags, flag_sign_always) {
763-
s = ~"+" + s;
764-
} else if have_flag(cv.flags, flag_space_for_sign) {
765-
s = ~" " + s;
766-
}
767-
}
768-
return unsafe { pad(cv, s, PadFloat) };
769-
}
770-
pub fn conv_poly<T>(cv: Conv, v: &T) -> ~str {
771-
let s = sys::log_str(v);
772-
return conv_str(cv, s);
773-
}
774-
775-
// Convert an int to string with minimum number of digits. If precision is
776-
// 0 and num is 0 then the result is the empty string.
777-
pub fn int_to_str_prec(num: int, radix: uint, prec: uint) -> ~str {
778-
return if num < 0 {
779-
~"-" + uint_to_str_prec(-num as uint, radix, prec)
780-
} else { uint_to_str_prec(num as uint, radix, prec) };
781-
}
782-
783-
// Convert a uint to string with a minimum number of digits. If precision
784-
// is 0 and num is 0 then the result is the empty string. Could move this
785-
// to uint: but it doesn't seem all that useful.
786-
pub fn uint_to_str_prec(num: uint, radix: uint,
787-
prec: uint) -> ~str {
788-
return if prec == 0u && num == 0u {
789-
~""
790-
} else {
791-
let s = uint::to_str_radix(num, radix);
792-
let len = str::char_len(s);
793-
if len < prec {
794-
let diff = prec - len;
795-
let pad = str::from_chars(vec::from_elem(diff, '0'));
796-
pad + s
797-
} else { s }
798-
};
799-
}
800-
pub fn get_int_precision(cv: Conv) -> uint {
801-
return match cv.precision {
802-
CountIs(c) => c as uint,
803-
CountImplied => 1u
804-
};
805-
}
806-
807-
#[deriving(Eq)]
808-
pub enum PadMode { PadSigned, PadUnsigned, PadNozero, PadFloat }
809-
810-
pub fn pad(cv: Conv, s: ~str, mode: PadMode) -> ~str {
811-
let mut s = s; // sadtimes
812-
let uwidth : uint = match cv.width {
813-
CountImplied => return (s),
814-
CountIs(width) => { width as uint }
815-
};
816-
let strlen = str::char_len(s);
817-
if uwidth <= strlen { return (s); }
818-
let mut padchar = ' ';
819-
let diff = uwidth - strlen;
820-
if have_flag(cv.flags, flag_left_justify) {
821-
let padstr = str::from_chars(vec::from_elem(diff, padchar));
822-
return s + padstr;
823-
}
824-
let (might_zero_pad, signed) = match mode {
825-
PadNozero => (false, true),
826-
PadSigned => (true, true),
827-
PadFloat => (true, true),
828-
PadUnsigned => (true, false)
829-
};
830-
fn have_precision(cv: Conv) -> bool {
831-
return match cv.precision { CountImplied => false, _ => true };
832-
}
833-
let zero_padding = {
834-
if might_zero_pad && have_flag(cv.flags, flag_left_zero_pad) &&
835-
(!have_precision(cv) || mode == PadFloat) {
836-
padchar = '0';
837-
true
838-
} else {
839-
false
840-
}
841-
};
842-
let padstr = str::from_chars(vec::from_elem(diff, padchar));
843-
// This is completely heinous. If we have a signed value then
844-
// potentially rip apart the intermediate result and insert some
845-
// zeros. It may make sense to convert zero padding to a precision
846-
// instead.
847-
848-
if signed && zero_padding && s.len() > 0 {
849-
let head = str::shift_char(&mut s);
850-
if head == '+' || head == '-' || head == ' ' {
851-
let headstr = str::from_chars(vec::from_elem(1u, head));
852-
return headstr + padstr + s;
853-
}
854-
else {
855-
str::unshift_char(&mut s, head);
856-
}
857-
}
858-
return padstr + s;
859-
}
860-
pub fn have_flag(flags: u32, f: u32) -> bool {
861-
flags & f != 0
862-
}
863-
}
864-
865676
// Bulk of the tests are in src/test/run-pass/syntax-extension-fmt.rs
866677
#[cfg(test)]
867678
mod test {

src/snapshots.txt

+8
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,11 @@
1+
S 2013-03-27 8c15409
2+
macos-x86_64 05eb3801b60056d95715c891d00c5d372e34d00c
3+
macos-i386 4119e3fa614fa86adf60ed0183d00db3ce6d0dbc
4+
linux-x86_64 e9308bade0e068bca4abe59ef4afe8c8bb7c134d
5+
linux-i386 bcb30ed1817df1a07588cde2fb0ccaf9ffad7efb
6+
winnt-i386 a16d409465e125bc6f779b45821ae1ea276c6bd4
7+
freebsd-x86_64 348192f348f03541549f4e2c97af78901d59ca6e
8+
19
S 2013-03-21 ed25a67
210
freebsd-x86_64 5f0b08839ae3d1207808f0d57cbfdb00eff9c883
311
linux-i386 54765a17c6b6d04a7013cada2a51d190462979b8

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