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-rw-r--r--semver-parser/src/common.rs66
-rw-r--r--semver-parser/src/lib.rs8
-rw-r--r--semver-parser/src/range.rs696
-rw-r--r--semver-parser/src/recognize.rs154
-rw-r--r--semver-parser/src/version.rs365
5 files changed, 1289 insertions, 0 deletions
diff --git a/semver-parser/src/common.rs b/semver-parser/src/common.rs
new file mode 100644
index 0000000..267b4d9
--- /dev/null
+++ b/semver-parser/src/common.rs
@@ -0,0 +1,66 @@
+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)
+}
diff --git a/semver-parser/src/lib.rs b/semver-parser/src/lib.rs
new file mode 100644
index 0000000..3b0d8f0
--- /dev/null
+++ b/semver-parser/src/lib.rs
@@ -0,0 +1,8 @@
+pub mod version;
+pub mod range;
+
+// for private stuff the two share
+mod common;
+
+// for recognizer combinators
+mod recognize;
diff --git a/semver-parser/src/range.rs b/semver-parser/src/range.rs
new file mode 100644
index 0000000..858be9f
--- /dev/null
+++ b/semver-parser/src/range.rs
@@ -0,0 +1,696 @@
+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());
+ }
+}
diff --git a/semver-parser/src/recognize.rs b/semver-parser/src/recognize.rs
new file mode 100644
index 0000000..c0dd771
--- /dev/null
+++ b/semver-parser/src/recognize.rs
@@ -0,0 +1,154 @@
+// 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)
+ }
+}
diff --git a/semver-parser/src/version.rs b/semver-parser/src/version.rs
new file mode 100644
index 0000000..570f947
--- /dev/null
+++ b/semver-parser/src/version.rs
@@ -0,0 +1,365 @@
+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);
+ }
+}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-23 15:07:08 +0000