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auto merge of #9275 : blake2-ppc/rust/float-from-str, r=thestinger

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std: Remove {float,f64,f32}::from_str in favor of from_str in the prelude

Like issue #9209, remove float::{from_str, from_str_radix} in favor of
the two corresponding traits. The same for modules f64 and f32.

New usage is:

    from_str::<float>("1.2e34")
This commit is contained in:
bors 2013-09-18 08:01:00 -07:00
commit e02313a172
5 changed files with 190 additions and 216 deletions
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3
src/compiletest/compiletest.rs
View File

@ -17,7 +17,6 @@ extern mod extra;
use std::os;
use std::rt;
use std::f64;
use extra::getopts;
use extra::getopts::groups::{optopt, optflag, reqopt};
@ -131,7 +130,7 @@ pub fn parse_config(args: ~[~str]) -> config {
ratchet_noise_percent:
getopts::opt_maybe_str(matches,
"ratchet-noise-percent").map_move(|s|
f64::from_str(s).unwrap()),
from_str::<f64>(s).unwrap()),
runtool: getopts::opt_maybe_str(matches, "runtool"),
rustcflags: getopts::opt_maybe_str(matches, "rustcflags"),
jit: getopts::opt_present(matches, "jit"),

5
src/librustc/middle/const_eval.rs
View File

@ -19,7 +19,6 @@ use syntax::visit;
use syntax::visit::Visitor;
use syntax::ast::*;
use std::float;
use std::hashmap::{HashMap, HashSet};
//
@ -476,9 +475,9 @@ pub fn lit_to_const(lit: &lit) -> const_val {
lit_int(n, _) => const_int(n),
lit_uint(n, _) => const_uint(n),
lit_int_unsuffixed(n) => const_int(n),
lit_float(n, _) => const_float(float::from_str(n).unwrap() as f64),
lit_float(n, _) => const_float(from_str::<float>(n).unwrap() as f64),
lit_float_unsuffixed(n) =>
const_float(float::from_str(n).unwrap() as f64),
const_float(from_str::<float>(n).unwrap() as f64),
lit_nil => const_int(0i64),
lit_bool(b) => const_bool(b)
}

112
src/libstd/num/f32.rs
View File

@ -822,39 +822,6 @@ impl num::ToStrRadix for f32 {
}
}
///
/// Convert a string in base 10 to a float.
/// Accepts a optional decimal exponent.
///
/// This function accepts strings such as
///
/// * '3.14'
/// * '+3.14', equivalent to '3.14'
/// * '-3.14'
/// * '2.5E10', or equivalently, '2.5e10'
/// * '2.5E-10'
/// * '.' (understood as 0)
/// * '5.'
/// * '.5', or, equivalently, '0.5'
/// * '+inf', 'inf', '-inf', 'NaN'
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
pub fn from_str(num: &str) -> Option<f32> {
strconv::from_str_common(num, 10u, true, true, true,
strconv::ExpDec, false, false)
}
///
/// Convert a string in base 16 to a float.
/// Accepts a optional binary exponent.
@ -888,40 +855,65 @@ pub fn from_str_hex(num: &str) -> Option<f32> {
strconv::ExpBin, false, false)
}
///
/// Convert a string in an given base to a float.
///
/// Due to possible conflicts, this function does **not** accept
/// the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
/// does it recognize exponents of any kind.
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
/// * radix - The base to use. Must lie in the range [2 .. 36]
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
pub fn from_str_radix(num: &str, rdx: uint) -> Option<f32> {
strconv::from_str_common(num, rdx, true, true, false,
strconv::ExpNone, false, false)
}
impl FromStr for f32 {
///
/// Convert a string in base 10 to a float.
/// Accepts a optional decimal exponent.
///
/// This function accepts strings such as
///
/// * '3.14'
/// * '+3.14', equivalent to '3.14'
/// * '-3.14'
/// * '2.5E10', or equivalently, '2.5e10'
/// * '2.5E-10'
/// * '.' (understood as 0)
/// * '5.'
/// * '.5', or, equivalently, '0.5'
/// * '+inf', 'inf', '-inf', 'NaN'
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
fn from_str(val: &str) -> Option<f32> { from_str(val) }
fn from_str(val: &str) -> Option<f32> {
strconv::from_str_common(val, 10u, true, true, true,
strconv::ExpDec, false, false)
}
}
impl num::FromStrRadix for f32 {
///
/// Convert a string in an given base to a float.
///
/// Due to possible conflicts, this function does **not** accept
/// the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
/// does it recognize exponents of any kind.
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
/// * radix - The base to use. Must lie in the range [2 .. 36]
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
fn from_str_radix(val: &str, rdx: uint) -> Option<f32> {
from_str_radix(val, rdx)
strconv::from_str_common(val, rdx, true, true, false,
strconv::ExpNone, false, false)
}
}

112
src/libstd/num/f64.rs
View File

@ -869,39 +869,6 @@ impl num::ToStrRadix for f64 {
}
}
///
/// Convert a string in base 10 to a float.
/// Accepts a optional decimal exponent.
///
/// This function accepts strings such as
///
/// * '3.14'
/// * '+3.14', equivalent to '3.14'
/// * '-3.14'
/// * '2.5E10', or equivalently, '2.5e10'
/// * '2.5E-10'
/// * '.' (understood as 0)
/// * '5.'
/// * '.5', or, equivalently, '0.5'
/// * '+inf', 'inf', '-inf', 'NaN'
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
pub fn from_str(num: &str) -> Option<f64> {
strconv::from_str_common(num, 10u, true, true, true,
strconv::ExpDec, false, false)
}
///
/// Convert a string in base 16 to a float.
/// Accepts a optional binary exponent.
@ -935,40 +902,65 @@ pub fn from_str_hex(num: &str) -> Option<f64> {
strconv::ExpBin, false, false)
}
///
/// Convert a string in an given base to a float.
///
/// Due to possible conflicts, this function does **not** accept
/// the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
/// does it recognize exponents of any kind.
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
/// * radix - The base to use. Must lie in the range [2 .. 36]
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
pub fn from_str_radix(num: &str, rdx: uint) -> Option<f64> {
strconv::from_str_common(num, rdx, true, true, false,
strconv::ExpNone, false, false)
}
impl FromStr for f64 {
///
/// Convert a string in base 10 to a float.
/// Accepts a optional decimal exponent.
///
/// This function accepts strings such as
///
/// * '3.14'
/// * '+3.14', equivalent to '3.14'
/// * '-3.14'
/// * '2.5E10', or equivalently, '2.5e10'
/// * '2.5E-10'
/// * '.' (understood as 0)
/// * '5.'
/// * '.5', or, equivalently, '0.5'
/// * '+inf', 'inf', '-inf', 'NaN'
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
fn from_str(val: &str) -> Option<f64> { from_str(val) }
fn from_str(val: &str) -> Option<f64> {
strconv::from_str_common(val, 10u, true, true, true,
strconv::ExpDec, false, false)
}
}
impl num::FromStrRadix for f64 {
///
/// Convert a string in an given base to a float.
///
/// Due to possible conflicts, this function does **not** accept
/// the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
/// does it recognize exponents of any kind.
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
/// * radix - The base to use. Must lie in the range [2 .. 36]
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
fn from_str_radix(val: &str, rdx: uint) -> Option<f64> {
from_str_radix(val, rdx)
strconv::from_str_common(val, rdx, true, true, false,
strconv::ExpNone, false, false)
}
}

174
src/libstd/num/float.rs
View File

@ -187,39 +187,6 @@ impl num::ToStrRadix for float {
}
}
///
/// Convert a string in base 10 to a float.
/// Accepts a optional decimal exponent.
///
/// This function accepts strings such as
///
/// * '3.14'
/// * '+3.14', equivalent to '3.14'
/// * '-3.14'
/// * '2.5E10', or equivalently, '2.5e10'
/// * '2.5E-10'
/// * '.' (understood as 0)
/// * '5.'
/// * '.5', or, equivalently, '0.5'
/// * '+inf', 'inf', '-inf', 'NaN'
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
pub fn from_str(num: &str) -> Option<float> {
strconv::from_str_common(num, 10u, true, true, true,
strconv::ExpDec, false, false)
}
///
/// Convert a string in base 16 to a float.
/// Accepts a optional binary exponent.
@ -253,40 +220,65 @@ pub fn from_str_hex(num: &str) -> Option<float> {
strconv::ExpBin, false, false)
}
///
/// Convert a string in an given base to a float.
///
/// Due to possible conflicts, this function does **not** accept
/// the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
/// does it recognize exponents of any kind.
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
/// * radix - The base to use. Must lie in the range [2 .. 36]
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
pub fn from_str_radix(num: &str, radix: uint) -> Option<float> {
strconv::from_str_common(num, radix, true, true, false,
strconv::ExpNone, false, false)
}
impl FromStr for float {
///
/// Convert a string in base 10 to a float.
/// Accepts a optional decimal exponent.
///
/// This function accepts strings such as
///
/// * '3.14'
/// * '+3.14', equivalent to '3.14'
/// * '-3.14'
/// * '2.5E10', or equivalently, '2.5e10'
/// * '2.5E-10'
/// * '.' (understood as 0)
/// * '5.'
/// * '.5', or, equivalently, '0.5'
/// * '+inf', 'inf', '-inf', 'NaN'
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
fn from_str(val: &str) -> Option<float> { from_str(val) }
fn from_str(val: &str) -> Option<float> {
strconv::from_str_common(val, 10u, true, true, true,
strconv::ExpDec, false, false)
}
}
impl num::FromStrRadix for float {
///
/// Convert a string in an given base to a float.
///
/// Due to possible conflicts, this function does **not** accept
/// the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
/// does it recognize exponents of any kind.
///
/// Leading and trailing whitespace represent an error.
///
/// # Arguments
///
/// * num - A string
/// * radix - The base to use. Must lie in the range [2 .. 36]
///
/// # Return value
///
/// `none` if the string did not represent a valid number. Otherwise,
/// `Some(n)` where `n` is the floating-point number represented by `num`.
///
#[inline]
fn from_str_radix(val: &str, radix: uint) -> Option<float> {
from_str_radix(val, radix)
strconv::from_str_common(val, radix, true, true, false,
strconv::ExpNone, false, false)
}
}
@ -1316,49 +1308,49 @@ mod tests {
#[test]
pub fn test_from_str() {
assert_eq!(from_str("3"), Some(3.));
assert_eq!(from_str("3.14"), Some(3.14));
assert_eq!(from_str("+3.14"), Some(3.14));
assert_eq!(from_str("-3.14"), Some(-3.14));
assert_eq!(from_str("2.5E10"), Some(25000000000.));
assert_eq!(from_str("2.5e10"), Some(25000000000.));
assert_eq!(from_str("25000000000.E-10"), Some(2.5));
assert_eq!(from_str("."), Some(0.));
assert_eq!(from_str(".e1"), Some(0.));
assert_eq!(from_str(".e-1"), Some(0.));
assert_eq!(from_str("5."), Some(5.));
assert_eq!(from_str(".5"), Some(0.5));
assert_eq!(from_str("0.5"), Some(0.5));
assert_eq!(from_str("-.5"), Some(-0.5));
assert_eq!(from_str("-5"), Some(-5.));
assert_eq!(from_str("inf"), Some(infinity));
assert_eq!(from_str("+inf"), Some(infinity));
assert_eq!(from_str("-inf"), Some(neg_infinity));
assert_eq!(from_str::<float>("3"), Some(3.));
assert_eq!(from_str::<float>("3.14"), Some(3.14));
assert_eq!(from_str::<float>("+3.14"), Some(3.14));
assert_eq!(from_str::<float>("-3.14"), Some(-3.14));
assert_eq!(from_str::<float>("2.5E10"), Some(25000000000.));
assert_eq!(from_str::<float>("2.5e10"), Some(25000000000.));
assert_eq!(from_str::<float>("25000000000.E-10"), Some(2.5));
assert_eq!(from_str::<float>("."), Some(0.));
assert_eq!(from_str::<float>(".e1"), Some(0.));
assert_eq!(from_str::<float>(".e-1"), Some(0.));
assert_eq!(from_str::<float>("5."), Some(5.));
assert_eq!(from_str::<float>(".5"), Some(0.5));
assert_eq!(from_str::<float>("0.5"), Some(0.5));
assert_eq!(from_str::<float>("-.5"), Some(-0.5));
assert_eq!(from_str::<float>("-5"), Some(-5.));
assert_eq!(from_str::<float>("inf"), Some(infinity));
assert_eq!(from_str::<float>("+inf"), Some(infinity));
assert_eq!(from_str::<float>("-inf"), Some(neg_infinity));
// note: NaN != NaN, hence this slightly complex test
match from_str("NaN") {
match from_str::<float>("NaN") {
Some(f) => assert!(f.is_NaN()),
None => fail!()
}
// note: -0 == 0, hence these slightly more complex tests
match from_str("-0") {
match from_str::<float>("-0") {
Some(v) if v.is_zero() => assert!(v.is_negative()),
_ => fail!()
}
match from_str("0") {
match from_str::<float>("0") {
Some(v) if v.is_zero() => assert!(v.is_positive()),
_ => fail!()
}
assert!(from_str("").is_none());
assert!(from_str("x").is_none());
assert!(from_str(" ").is_none());
assert!(from_str(" ").is_none());
assert!(from_str("e").is_none());
assert!(from_str("E").is_none());
assert!(from_str("E1").is_none());
assert!(from_str("1e1e1").is_none());
assert!(from_str("1e1.1").is_none());
assert!(from_str("1e1-1").is_none());
assert!(from_str::<float>("").is_none());
assert!(from_str::<float>("x").is_none());
assert!(from_str::<float>(" ").is_none());
assert!(from_str::<float>(" ").is_none());
assert!(from_str::<float>("e").is_none());
assert!(from_str::<float>("E").is_none());
assert!(from_str::<float>("E1").is_none());
assert!(from_str::<float>("1e1e1").is_none());
assert!(from_str::<float>("1e1.1").is_none());
assert!(from_str::<float>("1e1-1").is_none());
}
#[test]