Create SemVer Expression parser
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README.md
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README.md
@ -1,12 +1,10 @@
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Java SemVer v0.7.0 (SemVer 2) [![Build Status](https://travis-ci.org/zafarkhaja/java-semver.png)](https://travis-ci.org/zafarkhaja/java-semver)
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==================
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=============================
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Java SemVer is a Java implementation of the Semantic Versioning Specification
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(http://semver.org/).
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Versioning
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----------
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### Versioning ###
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Java SemVer is versioned according to the SemVer Specification.
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**NOTE**: The current release of the Java SemVer library has a major version of
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@ -19,13 +17,13 @@ Usage
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Below are some common use cases for the Java SemVer library.
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### Creating Versions ###
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Java SemVer library is composed of one small package which contains a few
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classes. All the classes but one are package-private and are not accessible
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outside the package. The only public class is `Version` which acts as a
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_facade_ for the client code. By design, the `Version` class is made immutable
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by making its constructor package-private, so that it can not be subclassed or
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directly instantiated. Instead of public constructor, the `Version` class
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provides a _static factory method_, `Version.valueOf(String value)`.
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The main class of the Java SemVer library is `Version` which implements the
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Facade design pattern. By design, the `Version` class is made immutable by
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making its constructors package-private, so that it can not be subclassed or
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directly instantiated. Instead of public constructors, the `Version` class
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provides few _static factory methods_.
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One of the methods is the `Version.valueOf` method.
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```java
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import com.github.zafarkhaja.semver.Version;
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@ -43,6 +41,17 @@ String build = v.getBuildMetadata(); // "build.1"
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String str = v.toString(); // "1.0.0-rc.1+build.1"
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```
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The other static factory method is `Version.forIntegers` which is also
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overloaded to allow fewer arguments.
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```java
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import com.github.zafarkhaja.semver.Version;
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Version v1 = Version.forIntegers(1);
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Version v2 = Version.forIntegers(1, 2);
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Version v3 = Version.forIntegers(1, 2, 3);
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```
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Another way to create a `Version` is to use a _builder_ class `Version.Builder`.
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```java
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@ -76,15 +85,15 @@ import com.github.zafarkhaja.semver.Version;
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Version v1 = Version.valueOf("1.2.3");
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// Incrementing major version
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// Incrementing the major version
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Version v2 = v1.incrementMajorVersion(); // "2.0.0"
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Version v2 = v1.incrementMajorVersion("alpha"); // "2.0.0-alpha"
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// Incrementing minor version
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// Incrementing the minor version
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Version v3 = v1.incrementMinorVersion(); // "1.3.0"
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Version v3 = v1.incrementMinorVersion("alpha"); // "1.3.0-alpha"
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// Incrementing patch version
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// Incrementing the patch version
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Version v4 = v1.incrementPatchVersion(); // "1.2.4"
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Version v4 = v1.incrementPatchVersion("alpha"); // "1.2.4-alpha"
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@ -92,30 +101,32 @@ Version v4 = v1.incrementPatchVersion("alpha"); // "1.2.4-alpha"
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String str = v1.toString(); // "1.2.3"
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```
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There are also incrementor methods for pre-release version and build metadata.
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There are also incrementor methods for the pre-release version and the build
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metadata.
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```java
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import com.github.zafarkhaja.semver.Version;
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// Incrementing pre-release version
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// Incrementing the pre-release version
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Version v1 = Version.valueOf("1.2.3-rc"); // considered as "rc.0"
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Version v2 = v1.incrementPreReleaseVersion(); // "1.2.3-rc.1"
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Version v3 = v2.incrementPreReleaseVersion(); // "1.2.3-rc.2"
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// Incrementing build metadata
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// Incrementing the build metadata
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Version v1 = Version.valueOf("1.2.3-rc+build"); // considered as "build.0"
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Version v2 = v1.incrementBuildMetadata(); // "1.2.3-rc+build.1"
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Version v3 = v2.incrementBuildMetadata(); // "1.2.3-rc+build.2"
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```
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When incrementing normal or pre-release versions build metadata is always dropped.
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When incrementing the normal or pre-release versions the build metadata is
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always dropped.
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```java
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import com.github.zafarkhaja.semver.Version;
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Version v1 = Version.valueOf("1.2.3-beta+build");
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// Incrementing normal version
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// Incrementing the normal version
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Version v2 = v1.incrementMajorVersion(); // "2.0.0"
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Version v2 = v1.incrementMajorVersion("alpha"); // "2.0.0-alpha"
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@ -125,7 +136,7 @@ Version v3 = v1.incrementMinorVersion("alpha"); // "1.3.0-alpha"
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Version v4 = v1.incrementPatchVersion(); // "1.2.4"
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Version v4 = v1.incrementPatchVersion("alpha"); // "1.2.4-alpha"
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// Incrementing pre-release version
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// Incrementing the pre-release version
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Version v2 = v1.incrementPreReleaseVersion(); // "1.2.3-beta.1"
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```
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**NOTE**: The discussion page https://github.com/mojombo/semver/issues/60 might
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@ -134,8 +145,8 @@ incrementor methods.
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### Comparing Versions ###
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Comparing versions with Java SemVer is easy. The `Version` class implements the
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`Comparable` interface, it also overrides the `Object.equals(Object obj)` method
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and provides some more methods for convenient comparing.
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`Comparable` interface, it also overrides the `Object.equals` method and provides
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some more methods for convenient comparing.
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```java
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import com.github.zafarkhaja.semver.Version;
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@ -152,7 +163,7 @@ boolean result = v1.lessThan(v2); // true
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boolean result = v1.lessThanOrEqualTo(v2); // true
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```
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When determining version precedence build metadata is ignored (SemVer p.10).
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When determining version precedence the build metadata is ignored (SemVer p.10).
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```java
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import com.github.zafarkhaja.semver.Version;
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@ -164,9 +175,9 @@ int result = v1.compareTo(v2); // = 0
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boolean result = v1.equals(v2); // true
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```
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Sometimes, however, you might want to compare versions with build metadata in
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mind. For such cases Java SemVer provides a _comparator_ `Version.BUILD_AWARE_ORDER`
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and a convenience method `Version.compareWithBuildsTo(Version other)`.
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Sometimes, however, you might want to compare versions with the build metadata
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in mind. For such cases Java SemVer provides a _comparator_ `Version.BUILD_AWARE_ORDER`
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and a convenience method `Version.compareWithBuildsTo`.
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```java
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import com.github.zafarkhaja.semver.Version;
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@ -181,9 +192,34 @@ boolean result = v1.equals(v2); // false
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```
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SemVer Expressions API (Ranges)
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----------------------
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Since version 0.7.0 Java SemVer supports the SemVer Expressions API which is
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implemented as an external DSL. The BNF grammar for the SemVer Expressions DSL
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can be found in the corresponding issue
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"[Implement the SemVer Expressions API](https://github.com/zafarkhaja/java-semver/issues/1)".
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The entry point for the API is the `Version.satisfies` method.
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```java
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import com.github.zafarkhaja.semver.Version;
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Version v = Version.valueOf("1.0.0-beta");
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boolean result = v.satisfies(">=1.0.0 & <2.0.0"); // false
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```
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Below are examples of some common use cases, as well as syntactic sugar and some
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other interesting capabilities of the SemVer Expressions DSL.
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* Wildcard - `1.*` which is equivalent to `>=1.0.0 & <2.0.0`
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* Tilde operator - `~1.5` which is equivalent to `>=1.5.0 & <2.0.0`
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* Range - `1.0-2.0` which is equivalent to `>=1.0.0 & <=2.0.0`
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* Negation operator - `!(1.*)` which is equivalent to `<1.0.0 & >=2.0.0`
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* Short notation - `1` which is equivalent to `=1.0.0`
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* Parenthesized expression - `~1.3 | (1.4.* & !=1.4.5) | ~2`
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TODO
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----
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* [Implement ranges](https://github.com/zafarkhaja/java-semver/issues/1)
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* [Write doc comments for all API classes and methods](https://github.com/zafarkhaja/java-semver/issues/2)
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@ -23,6 +23,8 @@
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*/
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package com.github.zafarkhaja.semver;
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import com.github.zafarkhaja.semver.expr.Expression;
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import com.github.zafarkhaja.semver.expr.ExpressionParser;
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import java.util.Comparator;
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/**
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@ -116,6 +118,23 @@ public class Version implements Comparable<Version> {
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return VersionParser.parseValidSemVer(version);
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}
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public static Version forIntegers(int major) {
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return new Version(new NormalVersion(major, 0, 0));
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}
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public static Version forIntegers(int major, int minor) {
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return new Version(new NormalVersion(major, minor, 0));
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}
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public static Version forIntegers(int major, int minor, int patch) {
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return new Version(new NormalVersion(major, minor, patch));
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}
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public boolean satisfies(String expr) {
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Parser<Expression> parser = ExpressionParser.newInstance();
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return parser.parse(expr).interpret(this);
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}
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public Version incrementMajorVersion() {
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return new Version(normal.incrementMajor());
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}
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@ -0,0 +1,222 @@
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/*
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* The MIT License
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*
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* Copyright 2013 Zafar Khaja <zafarkhaja@gmail.com>.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.github.zafarkhaja.semver.expr;
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import com.github.zafarkhaja.semver.Parser;
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import com.github.zafarkhaja.semver.Version;
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import com.github.zafarkhaja.semver.expr.Lexer.Token;
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import com.github.zafarkhaja.semver.util.Stream;
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import com.github.zafarkhaja.semver.util.Stream.ElementType;
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import java.util.EnumSet;
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import java.util.Iterator;
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import static com.github.zafarkhaja.semver.expr.Lexer.Token.Type.*;
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/**
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*
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* @author Zafar Khaja <zafarkhaja@gmail.com>
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*/
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public class ExpressionParser implements Parser<Expression> {
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private final Lexer lexer;
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private Stream<Token> tokens;
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ExpressionParser(Lexer lexer) {
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this.lexer = lexer;
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}
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public static Parser<Expression> newInstance() {
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return new ExpressionParser(new Lexer());
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}
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@Override
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public Expression parse(String input) {
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tokens = lexer.tokenize(input);
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return parseSemVerExpression();
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}
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private Expression parseSemVerExpression() {
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Expression expr;
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if (tokens.positiveLookahead(NOT)) {
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tokens.consume();
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tokens.consume(LEFT_PAREN);
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expr = new Not(parseSemVerExpression());
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tokens.consume(RIGHT_PAREN);
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} else if (tokens.positiveLookahead(LEFT_PAREN)) {
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tokens.consume(LEFT_PAREN);
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expr = parseSemVerExpression();
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tokens.consume(RIGHT_PAREN);
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} else {
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expr = parseExpression();
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}
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return parseBooleanExpression(expr);
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}
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private Expression parseBooleanExpression(Expression expr) {
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if (tokens.positiveLookahead(AND)) {
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tokens.consume();
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expr = new And(expr, parseSemVerExpression());
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} else if (tokens.positiveLookahead(OR)) {
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tokens.consume();
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expr = new Or(expr, parseSemVerExpression());
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}
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return expr;
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}
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private Expression parseExpression() {
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if (tokens.positiveLookahead(TILDE)) {
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return parseTildeExpression();
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} else if (isVersionExpression()) {
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return parseVersionExpression();
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} else if (isRangeExpression()) {
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return parseRangeExpression();
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}
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return parseComparisonExpression();
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}
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private Expression parseComparisonExpression() {
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Token token = tokens.lookahead();
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Expression expr;
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switch (token.type) {
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case EQUAL:
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tokens.consume();
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expr = new Equal(parseVersion());
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break;
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case NOT_EQUAL:
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tokens.consume();
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expr = new NotEqual(parseVersion());
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break;
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case GREATER:
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tokens.consume();
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expr = new Greater(parseVersion());
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break;
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case GREATER_EQUAL:
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tokens.consume();
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expr = new GreaterOrEqual(parseVersion());
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break;
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case LESS:
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tokens.consume();
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expr = new Less(parseVersion());
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break;
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case LESS_EQUAL:
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tokens.consume();
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expr = new LessOrEqual(parseVersion());
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break;
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default:
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expr = new Equal(parseVersion());
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}
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return expr;
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}
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private Expression parseTildeExpression() {
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tokens.consume(TILDE);
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int major = intOf(tokens.consume(NUMERIC).lexeme);
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if (!tokens.positiveLookahead(DOT)) {
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return new GreaterOrEqual(versionOf(major, 0, 0));
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}
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tokens.consume(DOT);
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int minor = intOf(tokens.consume(NUMERIC).lexeme);
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if (!tokens.positiveLookahead(DOT)) {
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return new And(
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new GreaterOrEqual(versionOf(major, minor, 0)),
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new Less(versionOf(major + 1, 0, 0))
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);
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}
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tokens.consume(DOT);
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int patch = intOf(tokens.consume(NUMERIC).lexeme);
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return new And(
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new GreaterOrEqual(versionOf(major, minor, patch)),
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new Less(versionOf(major, minor + 1, 0))
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);
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}
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private boolean isVersionExpression() {
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return isVersionFollowedBy(STAR);
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}
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private Expression parseVersionExpression() {
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int major = intOf(tokens.consume(NUMERIC).lexeme);
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tokens.consume(DOT);
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if (tokens.positiveLookahead(STAR)) {
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tokens.consume();
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return new And(
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new GreaterOrEqual(versionOf(major, 0, 0)),
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new Less(versionOf(major + 1, 0, 0))
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);
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}
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int minor = intOf(tokens.consume(NUMERIC).lexeme);
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tokens.consume(DOT);
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tokens.consume(STAR);
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return new And(
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new GreaterOrEqual(versionOf(major, minor, 0)),
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new Less(versionOf(major, minor + 1, 0))
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);
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}
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private boolean isRangeExpression() {
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return isVersionFollowedBy(HYPHEN);
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}
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private Expression parseRangeExpression() {
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Expression ge = new GreaterOrEqual(parseVersion());
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tokens.consume(HYPHEN);
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Expression le = new LessOrEqual(parseVersion());
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return new And(ge, le);
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}
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private Version parseVersion() {
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int major = intOf(tokens.consume(NUMERIC).lexeme);
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int minor = 0;
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if (tokens.positiveLookahead(DOT)) {
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tokens.consume();
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minor = intOf(tokens.consume(NUMERIC).lexeme);
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}
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int patch = 0;
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if (tokens.positiveLookahead(DOT)) {
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tokens.consume();
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patch = intOf(tokens.consume(NUMERIC).lexeme);
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}
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return versionOf(major, minor, patch);
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}
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private boolean isVersionFollowedBy(ElementType<Token> type) {
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EnumSet<Token.Type> expected = EnumSet.of(NUMERIC, DOT);
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Iterator<Token> it = tokens.iterator();
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Token lookahead = null;
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while (it.hasNext()) {
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lookahead = it.next();
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if (!expected.contains(lookahead.type)) {
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break;
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}
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}
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return type.isMatchedBy(lookahead);
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}
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private Version versionOf(int major, int minor, int patch) {
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return Version.forIntegers(major, minor, patch);
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}
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private int intOf(String value) {
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return Integer.parseInt(value);
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}
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}
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@ -305,6 +305,13 @@ public class VersionTest {
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assertTrue(0 == v1.compareTo(v2));
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assertTrue(0 > v1.compareWithBuildsTo(v2));
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}
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@Test
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public void shouldCheckIfVersionSatisfiesExpression() {
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Version v = Version.valueOf("2.0.0-beta");
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assertTrue(v.satisfies("~1.0"));
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assertFalse(v.satisfies(">=2.0 & <3.0"));
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}
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}
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public static class EqualsMethodTest {
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@ -0,0 +1,205 @@
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/*
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* The MIT License
|
||||
*
|
||||
* Copyright 2013 Zafar Khaja <zafarkhaja@gmail.com>.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
package com.github.zafarkhaja.semver.expr;
|
||||
|
||||
import com.github.zafarkhaja.semver.Version;
|
||||
import com.github.zafarkhaja.semver.util.UnexpectedElementTypeException;
|
||||
import org.junit.Test;
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
/**
|
||||
*
|
||||
* @author Zafar Khaja <zafarkhaja@gmail.com>
|
||||
*/
|
||||
public class ExpressionParserTest {
|
||||
|
||||
@Test
|
||||
public void shouldParseEqualComparisonExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression eq = parser.parse("=1.0.0");
|
||||
assertTrue(eq.interpret(Version.valueOf("1.0.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseEqualComparisonExpressionIfOnlyVersionGiven() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression eq = parser.parse("1.0.0");
|
||||
assertTrue(eq.interpret(Version.valueOf("1.0.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseNotEqualComparisonExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression ne = parser.parse("!=1.0.0");
|
||||
assertTrue(ne.interpret(Version.valueOf("1.2.3")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseGreaterComparisonExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression gt = parser.parse(">1.0.0");
|
||||
assertTrue(gt.interpret(Version.valueOf("1.2.3")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseGreaterOrEqualComparisonExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression ge = parser.parse(">=1.0.0");
|
||||
assertTrue(ge.interpret(Version.valueOf("1.0.0")));
|
||||
assertTrue(ge.interpret(Version.valueOf("1.2.3")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseLessComparisonExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression lt = parser.parse("<1.2.3");
|
||||
assertTrue(lt.interpret(Version.valueOf("1.0.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseLessOrEqualComparisonExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression le = parser.parse("<=1.2.3");
|
||||
assertTrue(le.interpret(Version.valueOf("1.0.0")));
|
||||
assertTrue(le.interpret(Version.valueOf("1.2.3")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseTildeExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr1 = parser.parse("~1");
|
||||
assertTrue(expr1.interpret(Version.valueOf("1.2.3")));
|
||||
assertTrue(expr1.interpret(Version.valueOf("3.2.1")));
|
||||
Expression expr2 = parser.parse("~1.2");
|
||||
assertTrue(expr2.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(expr2.interpret(Version.valueOf("2.0.0")));
|
||||
Expression expr3 = parser.parse("~1.2.3");
|
||||
assertTrue(expr3.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(expr3.interpret(Version.valueOf("1.3.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseShortFormOfVersion() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr1 = parser.parse("1");
|
||||
assertTrue(expr1.interpret(Version.valueOf("1.0.0")));
|
||||
Expression expr2 = parser.parse("2.0");
|
||||
assertTrue(expr2.interpret(Version.valueOf("2.0.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseVersionExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr1 = parser.parse("1.*");
|
||||
assertTrue(expr1.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(expr1.interpret(Version.valueOf("3.2.1")));
|
||||
Expression expr2 = parser.parse("1.2.*");
|
||||
assertTrue(expr2.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(expr2.interpret(Version.valueOf("1.3.2")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseRangeExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression range = parser.parse("1.0.0 - 2.0.0");
|
||||
assertTrue(range.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(range.interpret(Version.valueOf("3.2.1")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseAndBooleanExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression and = parser.parse(">=1.0.0 & <2.0.0");
|
||||
assertTrue(and.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(and.interpret(Version.valueOf("3.2.1")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseOrBooleanExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression or = parser.parse("1.* | =2.0.0");
|
||||
assertTrue(or.interpret(Version.valueOf("1.2.3")));
|
||||
assertFalse(or.interpret(Version.valueOf("2.1.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseParenthesizedExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr = parser.parse("(1)");
|
||||
assertTrue(expr.interpret(Version.valueOf("1.0.0")));
|
||||
assertFalse(expr.interpret(Version.valueOf("2.0.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseExpressionWithMultipleParentheses() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr = parser.parse("((1))");
|
||||
assertTrue(expr.interpret(Version.valueOf("1.0.0")));
|
||||
assertFalse(expr.interpret(Version.valueOf("2.0.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseNotExpression() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression not1 = parser.parse("!(1)");
|
||||
assertTrue(not1.interpret(Version.valueOf("2.0.0")));
|
||||
assertFalse(not1.interpret(Version.valueOf("1.0.0")));
|
||||
Expression not2 = parser.parse("0.* & !(>=1 & <2)");
|
||||
assertTrue(not2.interpret(Version.valueOf("0.5.0")));
|
||||
assertFalse(not2.interpret(Version.valueOf("1.0.1")));
|
||||
Expression not3 = parser.parse("!(>=1 & <2) & >=2");
|
||||
assertTrue(not3.interpret(Version.valueOf("2.0.0")));
|
||||
assertFalse(not3.interpret(Version.valueOf("1.2.3")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldRespectPrecedenceWhenUsedWithParentheses() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr1 = parser.parse("(~1.0 & <2.0) | >2.0");
|
||||
assertTrue(expr1.interpret(Version.valueOf("2.5.0")));
|
||||
Expression expr2 = parser.parse("~1.0 & (<2.0 | >2.0)");
|
||||
assertFalse(expr2.interpret(Version.valueOf("2.5.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldParseComplexExpressions() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
Expression expr = parser.parse(
|
||||
"((>=1.0.1 & <2) | (>=3.0 & <4)) & ((1-1.5) & (~1.5))"
|
||||
);
|
||||
assertTrue(expr.interpret(Version.valueOf("1.5.0")));
|
||||
assertFalse(expr.interpret(Version.valueOf("2.5.0")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldRaiseErrorIfClosingParenthesisIsMissing() {
|
||||
ExpressionParser parser = new ExpressionParser(new Lexer());
|
||||
try {
|
||||
parser.parse("((>=1.0.1 & < 2)");
|
||||
} catch (UnexpectedElementTypeException e) {
|
||||
return;
|
||||
}
|
||||
fail("Should raise error if closing parenthesis is missing");
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue
Block a user