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1
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{"files":{"Cargo.toml":"67597114802114d2a7fdb457c1cf5f7e0c951b21e287c6a47b9a86b9028cf64d","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"d38feaa4f9468cd1e0ece22e0ad2eadfe6195a9a0a3843b7c722d5c7d81804fb","src/common.rs":"dc42336abd34e19ca9f732f33657e106f98dcc8c10d4c2564bc4f160cb31926e","src/lib.rs":"3ac8ef5a280344a25cb18ac386034c0fee8d64060fa14af5e25ed49f0cb2fd9e","src/range.rs":"3596f048d466d43887aff1e8c8c834476672a4627631ed35379c35466b5f02ec","src/recognize.rs":"9f16eda9fcd7d8af7eee4c3b89c611bd648040273fde6b35778f8a50b004c8b1","src/version.rs":"dbd91a4e4fd92a0aa9eb4f858ecbc1ecd680aa60572cc2ad2085e5c5c30e5b77"},"package":"388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"}

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[package]
name = "semver-parser"
version = "0.7.0"
authors = ["Steve Klabnik <steve@steveklabnik.com>"]
license = "MIT/Apache-2.0"
repository = "https://github.com/steveklabnik/semver-parser"
homepage = "https://github.com/steveklabnik/semver-parser"
documentation = "https://docs.rs/semver-parser"
description = """
Parsing of the semver spec.
"""

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Apache License
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Copyright (c) 2016 Steve Klabnik
Permission is hereby granted, free of charge, to any
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DEALINGS IN THE SOFTWARE.

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use version::Identifier;
use recognize::{Recognize, Alt, OneOrMore, Inclusive, OneByte};
use std::str::from_utf8;
// by the time we get here, we know that it's all valid characters, so this doesn't need to return
// a result or anything
fn parse_meta(s: &str) -> Vec<Identifier> {
// Originally, I wanted to implement this method via calling parse, but parse is tolerant of
// leading zeroes, and we want anything with leading zeroes to be considered alphanumeric, not
// numeric. So the strategy is to check with a recognizer first, and then call parse once
// we've determined that it's a number without a leading zero.
s.split(".")
.map(|part| {
// another wrinkle: we made sure that any number starts with a
// non-zero. But there's a problem: an actual zero is a number, yet
// gets left out by this heuristic. So let's also check for the
// single, lone zero.
if is_alpha_numeric(part) {
Identifier::AlphaNumeric(part.to_string())
} else {
// we can unwrap here because we know it is only digits due to the regex
Identifier::Numeric(part.parse().unwrap())
}
}).collect()
}
// parse optional metadata (preceded by the prefix character)
pub fn parse_optional_meta(s: &[u8], prefix_char: u8)-> Result<(Vec<Identifier>, usize), String> {
if let Some(len) = prefix_char.p(s) {
let start = len;
if let Some(len) = letters_numbers_dash_dot(&s[start..]) {
let end = start + len;
Ok((parse_meta(from_utf8(&s[start..end]).unwrap()), end))
} else {
Err("Error parsing prerelease".to_string())
}
} else {
Ok((Vec::new(), 0))
}
}
pub fn is_alpha_numeric(s: &str) -> bool {
if let Some((_val, len)) = numeric_identifier(s.as_bytes()) {
// Return true for number with leading zero
// Note: doing it this way also handily makes overflow fail over.
len != s.len()
} else {
true
}
}
// Note: could plumb overflow error up to return value as Result
pub fn numeric_identifier(s: &[u8]) -> Option<(u64, usize)> {
if let Some(len) = Alt(b'0', OneOrMore(Inclusive(b'0'..b'9'))).p(s) {
from_utf8(&s[0..len]).unwrap().parse().ok().map(|val| (val, len))
} else {
None
}
}
pub fn letters_numbers_dash_dot(s: &[u8]) -> Option<usize> {
OneOrMore(OneByte(|c| c == b'-' || c == b'.' ||
(b'0' <= c && c <= b'9') ||
(b'a' <= c && c <= b'z') ||
(b'A' <= c && c <= b'Z'))).p(s)
}

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pub mod version;
pub mod range;
// for private stuff the two share
mod common;
// for recognizer combinators
mod recognize;

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use common::{self, numeric_identifier, letters_numbers_dash_dot};
use version::Identifier;
use std::str::{FromStr, from_utf8};
use recognize::*;
#[derive(Debug)]
pub struct VersionReq {
pub predicates: Vec<Predicate>,
}
#[derive(PartialEq,Debug)]
pub enum WildcardVersion {
Major,
Minor,
Patch,
}
#[derive(PartialEq,Debug)]
pub enum Op {
Ex, // Exact
Gt, // Greater than
GtEq, // Greater than or equal to
Lt, // Less than
LtEq, // Less than or equal to
Tilde, // e.g. ~1.0.0
Compatible, // compatible by definition of semver, indicated by ^
Wildcard(WildcardVersion), // x.y.*, x.*, *
}
impl FromStr for Op {
type Err = String;
fn from_str(s: &str) -> Result<Op, String> {
match s {
"=" => Ok(Op::Ex),
">" => Ok(Op::Gt),
">=" => Ok(Op::GtEq),
"<" => Ok(Op::Lt),
"<=" => Ok(Op::LtEq),
"~" => Ok(Op::Tilde),
"^" => Ok(Op::Compatible),
_ => Err(String::from("Could not parse Op")),
}
}
}
#[derive(PartialEq,Debug)]
pub struct Predicate {
pub op: Op,
pub major: u64,
pub minor: Option<u64>,
pub patch: Option<u64>,
pub pre: Vec<Identifier>,
}
fn numeric_or_wild(s: &[u8]) -> Option<(Option<u64>, usize)> {
if let Some((val, len)) = numeric_identifier(s) {
Some((Some(val), len))
} else if let Some(len) = OneOf(b"*xX").p(s) {
Some((None, len))
} else {
None
}
}
fn dot_numeric_or_wild(s: &[u8]) -> Option<(Option<u64>, usize)> {
b'.'.p(s).and_then(|len|
numeric_or_wild(&s[len..]).map(|(val, len2)| (val, len + len2))
)
}
fn operation(s: &[u8]) -> Option<(Op, usize)> {
if let Some(len) = "=".p(s) {
Some((Op::Ex, len))
} else if let Some(len) = ">=".p(s) {
Some((Op::GtEq, len))
} else if let Some(len) = ">".p(s) {
Some((Op::Gt, len))
} else if let Some(len) = "<=".p(s) {
Some((Op::LtEq, len))
} else if let Some(len) = "<".p(s) {
Some((Op::Lt, len))
} else if let Some(len) = "~".p(s) {
Some((Op::Tilde, len))
} else if let Some(len) = "^".p(s) {
Some((Op::Compatible, len))
} else {
None
}
}
fn whitespace(s: &[u8]) -> Option<usize> {
ZeroOrMore(OneOf(b"\t\r\n ")).p(s)
}
pub fn parse_predicate(range: &str) -> Result<Predicate, String> {
let s = range.trim().as_bytes();
let mut i = 0;
let mut operation = if let Some((op, len)) = operation(&s[i..]) {
i += len;
op
} else {
// operations default to Compatible
Op::Compatible
};
if let Some(len) = whitespace.p(&s[i..]) {
i += len;
}
let major = if let Some((major, len)) = numeric_identifier(&s[i..]) {
i += len;
major
} else {
return Err("Error parsing major version number: ".to_string());
};
let minor = if let Some((minor, len)) = dot_numeric_or_wild(&s[i..]) {
i += len;
if minor.is_none() {
operation = Op::Wildcard(WildcardVersion::Minor);
}
minor
} else {
None
};
let patch = if let Some((patch, len)) = dot_numeric_or_wild(&s[i..]) {
i += len;
if patch.is_none() {
operation = Op::Wildcard(WildcardVersion::Patch);
}
patch
} else {
None
};
let (pre, pre_len) = common::parse_optional_meta(&s[i..], b'-')?;
i += pre_len;
if let Some(len) = (b'+', letters_numbers_dash_dot).p(&s[i..]) {
i += len;
}
if i != s.len() {
return Err("Extra junk after valid predicate: ".to_string() +
from_utf8(&s[i..]).unwrap());
}
Ok(Predicate {
op: operation,
major: major,
minor: minor,
patch: patch,
pre: pre,
})
}
pub fn parse(ranges: &str) -> Result<VersionReq, String> {
// null is an error
if ranges == "\0" {
return Err(String::from("Null is not a valid VersionReq"));
}
// an empty range is a major version wildcard
// so is a lone * or x of either capitalization
if (ranges == "")
|| (ranges == "*")
|| (ranges == "x")
|| (ranges == "X") {
return Ok(VersionReq {
predicates: vec![Predicate {
op: Op::Wildcard(WildcardVersion::Major),
major: 0,
minor: None,
patch: None,
pre: Vec::new(),
}],
});
}
let ranges = ranges.trim();
let predicates: Result<Vec<_>, String> = ranges
.split(",")
.map(|range| {
parse_predicate(range)
})
.collect();
let predicates = try!(predicates);
if predicates.len() == 0 {
return Err(String::from("VersionReq did not parse properly"));
}
Ok(VersionReq {
predicates: predicates,
})
}
#[cfg(test)]
mod tests {
use super::*;
use range;
use version::Identifier;
#[test]
fn test_parsing_default() {
let r = range::parse("1.0.0").unwrap();
assert_eq!(Predicate {
op: Op::Compatible,
major: 1,
minor: Some(0),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_exact_01() {
let r = range::parse("=1.0.0").unwrap();
assert_eq!(Predicate {
op: Op::Ex,
major: 1,
minor: Some(0),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_exact_02() {
let r = range::parse("=0.9.0").unwrap();
assert_eq!(Predicate {
op: Op::Ex,
major: 0,
minor: Some(9),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_exact_03() {
let r = range::parse("=0.1.0-beta2.a").unwrap();
assert_eq!(Predicate {
op: Op::Ex,
major: 0,
minor: Some(1),
patch: Some(0),
pre: vec![Identifier::AlphaNumeric(String::from("beta2")),
Identifier::AlphaNumeric(String::from("a"))],
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_greater_than() {
let r = range::parse("> 1.0.0").unwrap();
assert_eq!(Predicate {
op: Op::Gt,
major: 1,
minor: Some(0),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_greater_than_01() {
let r = range::parse(">= 1.0.0").unwrap();
assert_eq!(Predicate {
op: Op::GtEq,
major: 1,
minor: Some(0),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_greater_than_02() {
let r = range::parse(">= 2.1.0-alpha2").unwrap();
assert_eq!(Predicate {
op: Op::GtEq,
major: 2,
minor: Some(1),
patch: Some(0),
pre: vec![Identifier::AlphaNumeric(String::from("alpha2"))],
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_less_than() {
let r = range::parse("< 1.0.0").unwrap();
assert_eq!(Predicate {
op: Op::Lt,
major: 1,
minor: Some(0),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_less_than_eq() {
let r = range::parse("<= 2.1.0-alpha2").unwrap();
assert_eq!(Predicate {
op: Op::LtEq,
major: 2,
minor: Some(1),
patch: Some(0),
pre: vec![Identifier::AlphaNumeric(String::from("alpha2"))],
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_tilde() {
let r = range::parse("~1").unwrap();
assert_eq!(Predicate {
op: Op::Tilde,
major: 1,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
pub fn test_parsing_compatible() {
let r = range::parse("^0").unwrap();
assert_eq!(Predicate {
op: Op::Compatible,
major: 0,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_blank() {
let r = range::parse("").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Major),
major: 0,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_wildcard() {
let r = range::parse("*").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Major),
major: 0,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_x() {
let r = range::parse("x").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Major),
major: 0,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_capital_x() {
let r = range::parse("X").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Major),
major: 0,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_minor_wildcard_star() {
let r = range::parse("1.*").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Minor),
major: 1,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_minor_wildcard_x() {
let r = range::parse("1.x").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Minor),
major: 1,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_minor_wildcard_capital_x() {
let r = range::parse("1.X").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Minor),
major: 1,
minor: None,
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_patch_wildcard_star() {
let r = range::parse("1.2.*").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Patch),
major: 1,
minor: Some(2),
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_patch_wildcard_x() {
let r = range::parse("1.2.x").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Patch),
major: 1,
minor: Some(2),
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
fn test_parsing_patch_wildcard_capital_x() {
let r = range::parse("1.2.X").unwrap();
assert_eq!(Predicate {
op: Op::Wildcard(WildcardVersion::Patch),
major: 1,
minor: Some(2),
patch: None,
pre: Vec::new(),
},
r.predicates[0]
);
}
#[test]
pub fn test_multiple_01() {
let r = range::parse("> 0.0.9, <= 2.5.3").unwrap();
assert_eq!(Predicate {
op: Op::Gt,
major: 0,
minor: Some(0),
patch: Some(9),
pre: Vec::new(),
},
r.predicates[0]
);
assert_eq!(Predicate {
op: Op::LtEq,
major: 2,
minor: Some(5),
patch: Some(3),
pre: Vec::new(),
},
r.predicates[1]
);
}
#[test]
pub fn test_multiple_02() {
let r = range::parse("0.3.0, 0.4.0").unwrap();
assert_eq!(Predicate {
op: Op::Compatible,
major: 0,
minor: Some(3),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
assert_eq!(Predicate {
op: Op::Compatible,
major: 0,
minor: Some(4),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[1]
);
}
#[test]
pub fn test_multiple_03() {
let r = range::parse("<= 0.2.0, >= 0.5.0").unwrap();
assert_eq!(Predicate {
op: Op::LtEq,
major: 0,
minor: Some(2),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
assert_eq!(Predicate {
op: Op::GtEq,
major: 0,
minor: Some(5),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[1]
);
}
#[test]
pub fn test_multiple_04() {
let r = range::parse("0.1.0, 0.1.4, 0.1.6").unwrap();
assert_eq!(Predicate {
op: Op::Compatible,
major: 0,
minor: Some(1),
patch: Some(0),
pre: Vec::new(),
},
r.predicates[0]
);
assert_eq!(Predicate {
op: Op::Compatible,
major: 0,
minor: Some(1),
patch: Some(4),
pre: Vec::new(),
},
r.predicates[1]
);
assert_eq!(Predicate {
op: Op::Compatible,
major: 0,
minor: Some(1),
patch: Some(6),
pre: Vec::new(),
},
r.predicates[2]
);
}
#[test]
pub fn test_multiple_05() {
let r = range::parse(">=0.5.1-alpha3, <0.6").unwrap();
assert_eq!(Predicate {
op: Op::GtEq,
major: 0,
minor: Some(5),
patch: Some(1),
pre: vec![Identifier::AlphaNumeric(String::from("alpha3"))],
},
r.predicates[0]
);
assert_eq!(Predicate {
op: Op::Lt,
major: 0,
minor: Some(6),
patch: None,
pre: Vec::new(),
},
r.predicates[1]
);
}
#[test]
fn test_parse_build_metadata_with_predicate() {
assert_eq!(range::parse("^1.2.3+meta").unwrap().predicates[0].op,
Op::Compatible);
assert_eq!(range::parse("~1.2.3+meta").unwrap().predicates[0].op,
Op::Tilde);
assert_eq!(range::parse("=1.2.3+meta").unwrap().predicates[0].op,
Op::Ex);
assert_eq!(range::parse("<=1.2.3+meta").unwrap().predicates[0].op,
Op::LtEq);
assert_eq!(range::parse(">=1.2.3+meta").unwrap().predicates[0].op,
Op::GtEq);
assert_eq!(range::parse("<1.2.3+meta").unwrap().predicates[0].op,
Op::Lt);
assert_eq!(range::parse(">1.2.3+meta").unwrap().predicates[0].op,
Op::Gt);
}
#[test]
pub fn test_parse_errors() {
assert!(range::parse("\0").is_err());
assert!(range::parse(">= >= 0.0.2").is_err());
assert!(range::parse(">== 0.0.2").is_err());
assert!(range::parse("a.0.0").is_err());
assert!(range::parse("1.0.0-").is_err());
assert!(range::parse(">=").is_err());
assert!(range::parse("> 0.1.0,").is_err());
assert!(range::parse("> 0.3.0, ,").is_err());
}
#[test]
pub fn test_large_major_version() {
assert!(range::parse("18446744073709551617.0.0").is_err());
}
#[test]
pub fn test_large_minor_version() {
assert!(range::parse("0.18446744073709551617.0").is_err());
}
#[test]
pub fn test_large_patch_version() {
assert!(range::parse("0.0.18446744073709551617").is_err());
}
}

154
third-party/vendor/semver-parser/src/recognize.rs vendored Normal file
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// Copyright 2017 Google Inc. All rights reserved.
//
// Licensed under either of MIT or Apache License, Version 2.0,
// at your option.
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Simple recognizer combinators.
// This version is similar to a similar one in the "lang" module of
// xi-editor, but is stripped down to only the needed combinators.
use std::ops;
pub trait Recognize {
fn p(&self, s: &[u8]) -> Option<usize>;
}
impl<F: Fn(&[u8]) -> Option<usize>> Recognize for F {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
self(s)
}
}
pub struct OneByte<F>(pub F);
impl<F: Fn(u8) -> bool> Recognize for OneByte<F> {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
if s.is_empty() || !self.0(s[0]) {
None
} else {
Some(1)
}
}
}
impl Recognize for u8 {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
OneByte(|b| b == *self).p(s)
}
}
/// Use Inclusive(a..b) to indicate an inclusive range. When a...b syntax becomes
/// stable, we can get rid of this and switch to that.
pub struct Inclusive<T>(pub T);
impl Recognize for Inclusive<ops::Range<u8>> {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
OneByte(|x| x >= self.0.start && x <= self.0.end).p(s)
}
}
impl<'a> Recognize for &'a [u8] {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
let len = self.len();
if s.len() >= len && &s[..len] == *self {
Some(len)
} else {
None
}
}
}
impl<'a> Recognize for &'a str {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
self.as_bytes().p(s)
}
}
impl<P1: Recognize, P2: Recognize> Recognize for (P1, P2) {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
self.0.p(s).and_then(|len1|
self.1.p(&s[len1..]).map(|len2|
len1 + len2))
}
}
/// Choice from two heterogeneous alternatives.
pub struct Alt<P1, P2>(pub P1, pub P2);
impl<P1: Recognize, P2: Recognize> Recognize for Alt<P1, P2> {
#[inline(always)]
fn p(&self, s: &[u8]) -> Option<usize> {
self.0.p(s).or_else(|| self.1.p(s))
}
}
/// Choice from a homogenous slice of parsers.
pub struct OneOf<'a, P: 'a>(pub &'a [P]);
impl<'a, P: Recognize> Recognize for OneOf<'a, P> {
#[inline]
fn p(&self, s: &[u8]) -> Option<usize> {
for ref p in self.0 {
if let Some(len) = p.p(s) {
return Some(len);
}
}
None
}
}
pub struct OneOrMore<P>(pub P);
impl<P: Recognize> Recognize for OneOrMore<P> {
#[inline]
fn p(&self, s: &[u8]) -> Option<usize> {
let mut i = 0;
let mut count = 0;
while let Some(len) = self.0.p(&s[i..]) {
i += len;
count += 1;
}
if count >= 1 {
Some(i)
} else {
None
}
}
}
pub struct ZeroOrMore<P>(pub P);
impl<P: Recognize> Recognize for ZeroOrMore<P> {
#[inline]
fn p(&self, s: &[u8]) -> Option<usize> {
let mut i = 0;
while let Some(len) = self.0.p(&s[i..]) {
i += len;
}
Some(i)
}
}

365
third-party/vendor/semver-parser/src/version.rs vendored Normal file
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use std::fmt;
use std::str::from_utf8;
use recognize::*;
use common::{self, numeric_identifier};
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Version {
pub major: u64,
pub minor: u64,
pub patch: u64,
pub pre: Vec<Identifier>,
pub build: Vec<Identifier>,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Identifier {
/// An identifier that's solely numbers.
Numeric(u64),
/// An identifier with letters and numbers.
AlphaNumeric(String),
}
pub fn parse(version: &str) -> Result<Version, String> {
let s = version.trim().as_bytes();
let mut i = 0;
let major = if let Some((major, len)) = numeric_identifier(&s[i..]) {
i += len;
major
} else {
return Err("Error parsing major identifier".to_string());
};
if let Some(len) = b'.'.p(&s[i..]) {
i += len;
} else {
return Err("Expected dot".to_string());
}
let minor = if let Some((minor, len)) = numeric_identifier(&s[i..]) {
i += len;
minor
} else {
return Err("Error parsing minor identifier".to_string());
};
if let Some(len) = b'.'.p(&s[i..]) {
i += len;
} else {
return Err("Expected dot".to_string());
}
let patch = if let Some((patch, len)) = numeric_identifier(&s[i..]) {
i += len;
patch
} else {
return Err("Error parsing patch identifier".to_string());
};
let (pre, pre_len) = common::parse_optional_meta(&s[i..], b'-')?;
i += pre_len;
let (build, build_len) = common::parse_optional_meta(&s[i..], b'+')?;
i += build_len;
if i != s.len() {
return Err("Extra junk after valid version: ".to_string() +
from_utf8(&s[i..]).unwrap());
}
Ok(Version {
major: major,
minor: minor,
patch: patch,
pre: pre,
build: build,
})
}
impl fmt::Display for Version {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
try!(write!(f, "{}.{}.{}", self.major, self.minor, self.patch));
if !self.pre.is_empty() {
let strs: Vec<_> =
self.pre.iter().map(ToString::to_string).collect();
try!(write!(f, "-{}", strs.join(".")));
}
if !self.build.is_empty() {
let strs: Vec<_> =
self.build.iter().map(ToString::to_string).collect();
try!(write!(f, "+{}", strs.join(".")));
}
Ok(())
}
}
impl fmt::Display for Identifier {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Identifier::Numeric(ref id) => id.fmt(f),
Identifier::AlphaNumeric(ref id) => id.fmt(f),
}
}
}
#[cfg(test)]
mod tests {
use version;
use super::*;
#[test]
fn parse_empty() {
let version = "";
let parsed = version::parse(version);
assert!(parsed.is_err(), "empty string incorrectly considered a valid parse");
}
#[test]
fn parse_blank() {
let version = " ";
let parsed = version::parse(version);
assert!(parsed.is_err(), "blank string incorrectly considered a valid parse");
}
#[test]
fn parse_no_minor_patch() {
let version = "1";
let parsed = version::parse(version);
assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
}
#[test]
fn parse_no_patch() {
let version = "1.2";
let parsed = version::parse(version);
assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
}
#[test]
fn parse_empty_pre() {
let version = "1.2.3-";
let parsed = version::parse(version);
assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
}
#[test]
fn parse_letters() {
let version = "a.b.c";
let parsed = version::parse(version);
assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
}
#[test]
fn parse_with_letters() {
let version = "1.2.3 a.b.c";
let parsed = version::parse(version);
assert!(parsed.is_err(), format!("'{}' incorrectly considered a valid parse", version));
}
#[test]
fn parse_basic_version() {
let version = "1.2.3";
let parsed = version::parse(version).unwrap();
assert_eq!(1, parsed.major);
assert_eq!(2, parsed.minor);
assert_eq!(3, parsed.patch);
}
#[test]
fn parse_trims_input() {
let version = " 1.2.3 ";
let parsed = version::parse(version).unwrap();
assert_eq!(1, parsed.major);
assert_eq!(2, parsed.minor);
assert_eq!(3, parsed.patch);
}
#[test]
fn parse_no_major_leading_zeroes() {
let version = "01.0.0";
let parsed = version::parse(version);
assert!(parsed.is_err(), "01 incorrectly considered a valid major version");
}
#[test]
fn parse_no_minor_leading_zeroes() {
let version = "0.01.0";
let parsed = version::parse(version);
assert!(parsed.is_err(), "01 incorrectly considered a valid minor version");
}
#[test]
fn parse_no_patch_leading_zeroes() {
let version = "0.0.01";
let parsed = version::parse(version);
assert!(parsed.is_err(), "01 incorrectly considered a valid patch version");
}
#[test]
fn parse_no_major_overflow() {
let version = "98765432109876543210.0.0";
let parsed = version::parse(version);
assert!(parsed.is_err(), "98765432109876543210 incorrectly considered a valid major version");
}
#[test]
fn parse_no_minor_overflow() {
let version = "0.98765432109876543210.0";
let parsed = version::parse(version);
assert!(parsed.is_err(), "98765432109876543210 incorrectly considered a valid minor version");
}
#[test]
fn parse_no_patch_overflow() {
let version = "0.0.98765432109876543210";
let parsed = version::parse(version);
assert!(parsed.is_err(), "98765432109876543210 incorrectly considered a valid patch version");
}
#[test]
fn parse_basic_prerelease() {
let version = "1.2.3-pre";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::AlphaNumeric(String::from("pre"))];
assert_eq!(expected_pre, parsed.pre);
}
#[test]
fn parse_prerelease_alphanumeric() {
let version = "1.2.3-alpha1";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::AlphaNumeric(String::from("alpha1"))];
assert_eq!(expected_pre, parsed.pre);
}
#[test]
fn parse_prerelease_zero() {
let version = "1.2.3-pre.0";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::AlphaNumeric(String::from("pre")),
Identifier::Numeric(0)];
assert_eq!(expected_pre, parsed.pre);
}
#[test]
fn parse_basic_build() {
let version = "1.2.3+build";
let parsed = version::parse(version).unwrap();
let expected_build = vec![Identifier::AlphaNumeric(String::from("build"))];
assert_eq!(expected_build, parsed.build);
}
#[test]
fn parse_build_alphanumeric() {
let version = "1.2.3+build5";
let parsed = version::parse(version).unwrap();
let expected_build = vec![Identifier::AlphaNumeric(String::from("build5"))];
assert_eq!(expected_build, parsed.build);
}
#[test]
fn parse_pre_and_build() {
let version = "1.2.3-alpha1+build5";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::AlphaNumeric(String::from("alpha1"))];
assert_eq!(expected_pre, parsed.pre);
let expected_build = vec![Identifier::AlphaNumeric(String::from("build5"))];
assert_eq!(expected_build, parsed.build);
}
#[test]
fn parse_complex_metadata_01() {
let version = "1.2.3-1.alpha1.9+build5.7.3aedf ";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::Numeric(1),
Identifier::AlphaNumeric(String::from("alpha1")),
Identifier::Numeric(9)];
assert_eq!(expected_pre, parsed.pre);
let expected_build = vec![Identifier::AlphaNumeric(String::from("build5")),
Identifier::Numeric(7),
Identifier::AlphaNumeric(String::from("3aedf"))];
assert_eq!(expected_build, parsed.build);
}
#[test]
fn parse_complex_metadata_02() {
let version = "0.4.0-beta.1+0851523";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::AlphaNumeric(String::from("beta")),
Identifier::Numeric(1)];
assert_eq!(expected_pre, parsed.pre);
let expected_build = vec![Identifier::AlphaNumeric(String::from("0851523"))];
assert_eq!(expected_build, parsed.build);
}
#[test]
fn parse_metadata_overflow() {
let version = "0.4.0-beta.1+98765432109876543210";
let parsed = version::parse(version).unwrap();
let expected_pre = vec![Identifier::AlphaNumeric(String::from("beta")),
Identifier::Numeric(1)];
assert_eq!(expected_pre, parsed.pre);
let expected_build = vec![Identifier::AlphaNumeric(String::from("98765432109876543210"))];
assert_eq!(expected_build, parsed.build);
}
#[test]
fn parse_regression_01() {
let version = "0.0.0-WIP";
let parsed = version::parse(version).unwrap();
assert_eq!(0, parsed.major);
assert_eq!(0, parsed.minor);
assert_eq!(0, parsed.patch);
let expected_pre = vec![Identifier::AlphaNumeric(String::from("WIP"))];
assert_eq!(expected_pre, parsed.pre);
}
}