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17
.gitea/workflows/LambdaTonic.yml
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17
.gitea/workflows/LambdaTonic.yml
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name: LambdaTonic
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on:
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push:
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branches:
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- main
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workflow_dispatch:
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|
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/setup-java@v4
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with:
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distribution: "corretto"
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java-version: "22"
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- name: Execute unit tests with Maven
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run: ./mvnw test
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17
.github/workflows/LambdaTonic.yml
vendored
Normal file
17
.github/workflows/LambdaTonic.yml
vendored
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@ -0,0 +1,17 @@
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name: LambdaTonic
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on:
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push:
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branches:
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- main
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workflow_dispatch:
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|
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
|
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- uses: actions/setup-java@v4
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with:
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distribution: "corretto"
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java-version: "22"
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- name: Execute unit tests with Maven
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run: ./mvnw test
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19
.mvn/wrapper/maven-wrapper.properties
vendored
Normal file
19
.mvn/wrapper/maven-wrapper.properties
vendored
Normal file
@ -0,0 +1,19 @@
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# Licensed to the Apache Software Foundation (ASF) under one
|
||||
# or more contributor license agreements. See the NOTICE file
|
||||
# distributed with this work for additional information
|
||||
# regarding copyright ownership. The ASF licenses this file
|
||||
# to you 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.
|
||||
wrapperVersion=3.3.2
|
||||
distributionType=only-script
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||||
distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
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21
LICENSE
Normal file
21
LICENSE
Normal file
@ -0,0 +1,21 @@
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MIT License
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||||
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Copyright (c) 2024 Cetica Marco
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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
|
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SOFTWARE.
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297
README.md
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297
README.md
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# λTonic 🥃 
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**λTonic**(_LambdaTonic_) is functional library designed for modern Java(+21).
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This library introduces a new algebraic data type called `Either<L, R>`;
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that is, an immutable sum type that _discriminates_ between two values, `Left<L>` and `Right<R>`,
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representing the failure and the success values, respectively.
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The `Either<L, R>` data type is implemented using a **sealed interface**, while the `Left<LL>`
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and the `Right<R>` are **record classes** that adopt the `Either<L, R>` protocol. Both the `Left<L>`
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and the `Right<R>` data types can be used inside a `switch` statement using Java pattern matching.
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## Overview
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The `Either<L, R>` algebraic data type can be used orthogonally over exceptions to propagate
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an error from a function. Consider the following scenario:
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```java
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public class Main {
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public static Either<Error, Double> division(double dividend, double divisor) {
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// Return an error whether the divisor is zero
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if(divisor == 0) {
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return new Left<>(new Error("Cannot divide by zero"));
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}
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// Otherwise return the result of the division
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return new Right<>(dividend / divisor);
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}
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public static void main(String[] args) {
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// Try to divide 15 by 3
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Either<Error, Double> divResult = division(15, 3);
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switch (divResult) {
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case Left<Error, Double> err -> System.err.println(err.value().getMessage());
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case Right<Error, Double> val -> System.out.printf("15 / 3 = %f\n", val.value());
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}
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// Try to divide 2 by 0
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var div2Result = division(2, 0);
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switch (div2Result) {
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case Left<Error, Double> err -> System.err.println(err.value().getMessage());
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case Right<Error, Double> val -> System.out.printf("2 / 0 = %f\n", val.value());
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}
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}
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}
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```
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In this example we have defined a `division` method that takes two arguments and perform a division
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on them. To handle the case when the `divisor` parameter is equal to zero, we return a new `Left<L>`
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instance of the `Either<L, R>` type, while in any other case, we return a new `Right<R>` instance of the
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`Either<L, R>` type. In the caller method(i.e., the `main`) we can then execute a custom statement using
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Java's builtin pattern matching.
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## API Usage
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The `Either<L, R>` data type supports a broad spectrum of features, below there is a list of all supported
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functionalities.
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- `map`
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### Description
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```java
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<T> Either<L, T> map(Function<R, T> fn);
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```
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The `map` method applies a function(`fn`) to the values inside the data type,
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returning a new data type if and only if the `Either<L, R>` type is instantiated
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to the `Right<R>` type. The `map` method adheres to the
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functor laws(identity and composition of morphisms), which allows the `Either<L, R>` data type
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to be classified as a functor.
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|
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### Usage
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The `map` method can be used to apply a computation to the value inside a functor:
|
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```java
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public class Main {
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// ...
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public static void main(String[] args) {
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var resDivision = division(15, 3);
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var resSquared = resDivision.map(x -> x * x);
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switch (resSquared) {
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case Left<Error, Double> err -> System.err.println(err.value().getMessage());
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case Right<Error, Double> val -> System.out.println(val.value()); // prints 25.0
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}
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}
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}
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```
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- `bimap`
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### Description
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```java
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<T, K> Either<T, K> bimap(Function<L, T> onLeft, Function<R, K> onRight);
|
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```
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The `bimap` method applies the `onLeft` method to the `Left<L>` subtype or the
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`onRight` to the `Right<R>`.
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|
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### Usage
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```java
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public class Main {
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public static void main(String[] args) {
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var sc = new Scanner(System.in);
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|
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// Read from stdin
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System.out.print("Enter a divisor: ");
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var input = sc.nextInt();
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// Divide a fixed dividend by user input divisor
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var divRes = division(15, input);
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// Apply a function regardless of the type of Either
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// On the left we uppercase the error message
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// On the right we square the result
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var bimapRes = divRes.bimap(
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err -> new Error(err.toString().toUpperCase()),
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val -> val * val
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);
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switch (bimapRes) {
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case Left<Error, Double> err -> System.err.println(err.value().getMessage());
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case Right<Error, Double> val -> System.out.println(val.value());
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}
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}
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}
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```
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|
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- `isLeft`
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|
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### Description
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```java
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boolean isLeft();
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```
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|
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`isLeft` returns true whether `Either<L, R>` is instantiated to the `Left<L>`, false otherwise
|
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|
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### Usage
|
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```java
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public class Main {
|
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public static void main(String[] args) {
|
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var sc = new Scanner(System.in);
|
||||
|
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// Read from stdin
|
||||
System.out.print("Enter a divisor: ");
|
||||
var input = sc.nextInt();
|
||||
|
||||
// Divide a fixed dividend by user input divisor
|
||||
var divRes = division(15, input);
|
||||
|
||||
if(divRes.isLeft()) {
|
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System.out.println("Cannot divide by zero");
|
||||
} else {
|
||||
System.out.println(divRes.fromRight(-1.0));
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
- `isRight`
|
||||
|
||||
### Description
|
||||
```java
|
||||
boolean isRight();
|
||||
```
|
||||
|
||||
`isRight` returns true whether `Either<L, R>` is instantiated to the `Right<L>`, false otherwise
|
||||
|
||||
### Usage
|
||||
```java
|
||||
public class Main {
|
||||
public static void main(String[] args) {
|
||||
var sc = new Scanner(System.in);
|
||||
|
||||
// Read from stdin
|
||||
System.out.print("Enter a divisor: ");
|
||||
var input = sc.nextInt();
|
||||
|
||||
// Divide a fixed dividend by user input divisor
|
||||
var divRes = division(15, input);
|
||||
|
||||
if(divRes.isRight()) {
|
||||
System.out.println(divRes.fromRight(-1.0));
|
||||
} else {
|
||||
System.out.println("Cannot divide by zero");
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
- `fromLeft`
|
||||
|
||||
### Description
|
||||
```java
|
||||
L fromLeft(L defaultValue);
|
||||
```
|
||||
|
||||
`fromLeft` returns the content of the `Left<L>` value or a default value
|
||||
|
||||
### Usage
|
||||
```java
|
||||
public class Main {
|
||||
public static void main(String[] args) {
|
||||
var sc = new Scanner(System.in);
|
||||
|
||||
// Read from stdin
|
||||
System.out.print("Enter a divisor: ");
|
||||
var input = sc.nextInt();
|
||||
|
||||
// Divide a fixed dividend by user input divisor
|
||||
var divRes = division(15, input);
|
||||
|
||||
// Prints out the error message or nothing
|
||||
System.out.println(divRes.fromLeft(new Error("")).getMessage());
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
- `fromRight`
|
||||
|
||||
### Description
|
||||
```java
|
||||
L fromLeft(L defaultValue);
|
||||
```
|
||||
|
||||
`fromRight` returns the content of the `Right<R>` value or a default value
|
||||
|
||||
### Usage
|
||||
```java
|
||||
public class Main {
|
||||
public static void main(String[] args) {
|
||||
var sc = new Scanner(System.in);
|
||||
|
||||
// Read from stdin
|
||||
System.out.print("Enter a divisor: ");
|
||||
var input = sc.nextInt();
|
||||
|
||||
// Divide a fixed dividend by user input divisor
|
||||
var divRes = division(15, input);
|
||||
|
||||
// Prints out the actual value or nothing
|
||||
System.out.println(divRes.fromRight(0.0));
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
- `toOptional`
|
||||
|
||||
### Description
|
||||
```java
|
||||
Optional<R> toOptional();
|
||||
```
|
||||
|
||||
`toOptional` converts an `Either<L, R>` data type to a `java.util.Optional`,
|
||||
where the `Right<R>` becomes a non-null `Optional<R>` and the `Left<L>`
|
||||
becomes a null `Optional`.
|
||||
|
||||
### Usage
|
||||
```java
|
||||
public class Main {
|
||||
public static void main(String[] args) {
|
||||
var sc = new Scanner(System.in);
|
||||
|
||||
// Read from stdin
|
||||
System.out.print("Enter a divisor: ");
|
||||
var input = sc.nextInt();
|
||||
|
||||
// Divide a fixed dividend by user input divisor
|
||||
var divRes = division(15, input).toOptional();
|
||||
|
||||
// Prints out the actual value or nothing
|
||||
divRes.ifPresent(System.out::println);
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
- `swap`
|
||||
|
||||
### Description
|
||||
```java
|
||||
Either<R, L> swap();
|
||||
```
|
||||
|
||||
`swap` returns an `Either<R, L>` type with `Left<R>` and `Right<L>` swapped.
|
||||
|
||||
### Usage
|
||||
```java
|
||||
public class Main {
|
||||
public static void main(String[] args) {
|
||||
Either<String, Integer> val = new Left<>("generic error");
|
||||
Either<Integer, String> res = val.swap();
|
||||
|
||||
System.out.println(res.isLeft()); // Prints false
|
||||
System.out.println(res.isRight()); // Prints true
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## License
|
||||
This software is released under the MIT license.
|
||||
You can find a copy of the license with this repository or by visiting
|
||||
the [following page](https://choosealicense.com/licenses/mit/).
|
||||
259
mvnw
vendored
Executable file
259
mvnw
vendored
Executable file
@ -0,0 +1,259 @@
|
||||
#!/bin/sh
|
||||
# ----------------------------------------------------------------------------
|
||||
# Licensed to the Apache Software Foundation (ASF) under one
|
||||
# or more contributor license agreements. See the NOTICE file
|
||||
# distributed with this work for additional information
|
||||
# regarding copyright ownership. The ASF licenses this file
|
||||
# to you 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.
|
||||
# ----------------------------------------------------------------------------
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# Apache Maven Wrapper startup batch script, version 3.3.2
|
||||
#
|
||||
# Optional ENV vars
|
||||
# -----------------
|
||||
# JAVA_HOME - location of a JDK home dir, required when download maven via java source
|
||||
# MVNW_REPOURL - repo url base for downloading maven distribution
|
||||
# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
|
||||
# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
|
||||
# ----------------------------------------------------------------------------
|
||||
|
||||
set -euf
|
||||
[ "${MVNW_VERBOSE-}" != debug ] || set -x
|
||||
|
||||
# OS specific support.
|
||||
native_path() { printf %s\\n "$1"; }
|
||||
case "$(uname)" in
|
||||
CYGWIN* | MINGW*)
|
||||
[ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
|
||||
native_path() { cygpath --path --windows "$1"; }
|
||||
;;
|
||||
esac
|
||||
|
||||
# set JAVACMD and JAVACCMD
|
||||
set_java_home() {
|
||||
# For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
|
||||
if [ -n "${JAVA_HOME-}" ]; then
|
||||
if [ -x "$JAVA_HOME/jre/sh/java" ]; then
|
||||
# IBM's JDK on AIX uses strange locations for the executables
|
||||
JAVACMD="$JAVA_HOME/jre/sh/java"
|
||||
JAVACCMD="$JAVA_HOME/jre/sh/javac"
|
||||
else
|
||||
JAVACMD="$JAVA_HOME/bin/java"
|
||||
JAVACCMD="$JAVA_HOME/bin/javac"
|
||||
|
||||
if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
|
||||
echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
|
||||
echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
else
|
||||
JAVACMD="$(
|
||||
'set' +e
|
||||
'unset' -f command 2>/dev/null
|
||||
'command' -v java
|
||||
)" || :
|
||||
JAVACCMD="$(
|
||||
'set' +e
|
||||
'unset' -f command 2>/dev/null
|
||||
'command' -v javac
|
||||
)" || :
|
||||
|
||||
if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
|
||||
echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
# hash string like Java String::hashCode
|
||||
hash_string() {
|
||||
str="${1:-}" h=0
|
||||
while [ -n "$str" ]; do
|
||||
char="${str%"${str#?}"}"
|
||||
h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
|
||||
str="${str#?}"
|
||||
done
|
||||
printf %x\\n $h
|
||||
}
|
||||
|
||||
verbose() { :; }
|
||||
[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
|
||||
|
||||
die() {
|
||||
printf %s\\n "$1" >&2
|
||||
exit 1
|
||||
}
|
||||
|
||||
trim() {
|
||||
# MWRAPPER-139:
|
||||
# Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
|
||||
# Needed for removing poorly interpreted newline sequences when running in more
|
||||
# exotic environments such as mingw bash on Windows.
|
||||
printf "%s" "${1}" | tr -d '[:space:]'
|
||||
}
|
||||
|
||||
# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
|
||||
while IFS="=" read -r key value; do
|
||||
case "${key-}" in
|
||||
distributionUrl) distributionUrl=$(trim "${value-}") ;;
|
||||
distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
|
||||
esac
|
||||
done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
|
||||
[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
|
||||
|
||||
case "${distributionUrl##*/}" in
|
||||
maven-mvnd-*bin.*)
|
||||
MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
|
||||
case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
|
||||
*AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
|
||||
:Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
|
||||
:Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
|
||||
:Linux*x86_64*) distributionPlatform=linux-amd64 ;;
|
||||
*)
|
||||
echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
|
||||
distributionPlatform=linux-amd64
|
||||
;;
|
||||
esac
|
||||
distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
|
||||
;;
|
||||
maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
|
||||
*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
|
||||
esac
|
||||
|
||||
# apply MVNW_REPOURL and calculate MAVEN_HOME
|
||||
# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
|
||||
[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
|
||||
distributionUrlName="${distributionUrl##*/}"
|
||||
distributionUrlNameMain="${distributionUrlName%.*}"
|
||||
distributionUrlNameMain="${distributionUrlNameMain%-bin}"
|
||||
MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
|
||||
MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
|
||||
|
||||
exec_maven() {
|
||||
unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
|
||||
exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
|
||||
}
|
||||
|
||||
if [ -d "$MAVEN_HOME" ]; then
|
||||
verbose "found existing MAVEN_HOME at $MAVEN_HOME"
|
||||
exec_maven "$@"
|
||||
fi
|
||||
|
||||
case "${distributionUrl-}" in
|
||||
*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
|
||||
*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
|
||||
esac
|
||||
|
||||
# prepare tmp dir
|
||||
if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
|
||||
clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
|
||||
trap clean HUP INT TERM EXIT
|
||||
else
|
||||
die "cannot create temp dir"
|
||||
fi
|
||||
|
||||
mkdir -p -- "${MAVEN_HOME%/*}"
|
||||
|
||||
# Download and Install Apache Maven
|
||||
verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
|
||||
verbose "Downloading from: $distributionUrl"
|
||||
verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
|
||||
|
||||
# select .zip or .tar.gz
|
||||
if ! command -v unzip >/dev/null; then
|
||||
distributionUrl="${distributionUrl%.zip}.tar.gz"
|
||||
distributionUrlName="${distributionUrl##*/}"
|
||||
fi
|
||||
|
||||
# verbose opt
|
||||
__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
|
||||
[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
|
||||
|
||||
# normalize http auth
|
||||
case "${MVNW_PASSWORD:+has-password}" in
|
||||
'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
|
||||
has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
|
||||
esac
|
||||
|
||||
if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
|
||||
verbose "Found wget ... using wget"
|
||||
wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
|
||||
elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
|
||||
verbose "Found curl ... using curl"
|
||||
curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
|
||||
elif set_java_home; then
|
||||
verbose "Falling back to use Java to download"
|
||||
javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
|
||||
targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
|
||||
cat >"$javaSource" <<-END
|
||||
public class Downloader extends java.net.Authenticator
|
||||
{
|
||||
protected java.net.PasswordAuthentication getPasswordAuthentication()
|
||||
{
|
||||
return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
|
||||
}
|
||||
public static void main( String[] args ) throws Exception
|
||||
{
|
||||
setDefault( new Downloader() );
|
||||
java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
|
||||
}
|
||||
}
|
||||
END
|
||||
# For Cygwin/MinGW, switch paths to Windows format before running javac and java
|
||||
verbose " - Compiling Downloader.java ..."
|
||||
"$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
|
||||
verbose " - Running Downloader.java ..."
|
||||
"$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
|
||||
fi
|
||||
|
||||
# If specified, validate the SHA-256 sum of the Maven distribution zip file
|
||||
if [ -n "${distributionSha256Sum-}" ]; then
|
||||
distributionSha256Result=false
|
||||
if [ "$MVN_CMD" = mvnd.sh ]; then
|
||||
echo "Checksum validation is not supported for maven-mvnd." >&2
|
||||
echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
|
||||
exit 1
|
||||
elif command -v sha256sum >/dev/null; then
|
||||
if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
|
||||
distributionSha256Result=true
|
||||
fi
|
||||
elif command -v shasum >/dev/null; then
|
||||
if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
|
||||
distributionSha256Result=true
|
||||
fi
|
||||
else
|
||||
echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
|
||||
echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
|
||||
exit 1
|
||||
fi
|
||||
if [ $distributionSha256Result = false ]; then
|
||||
echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
|
||||
echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# unzip and move
|
||||
if command -v unzip >/dev/null; then
|
||||
unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
|
||||
else
|
||||
tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
|
||||
fi
|
||||
printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
|
||||
mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
|
||||
|
||||
clean || :
|
||||
exec_maven "$@"
|
||||
149
mvnw.cmd
vendored
Normal file
149
mvnw.cmd
vendored
Normal file
@ -0,0 +1,149 @@
|
||||
<# : batch portion
|
||||
@REM ----------------------------------------------------------------------------
|
||||
@REM Licensed to the Apache Software Foundation (ASF) under one
|
||||
@REM or more contributor license agreements. See the NOTICE file
|
||||
@REM distributed with this work for additional information
|
||||
@REM regarding copyright ownership. The ASF licenses this file
|
||||
@REM to you under the Apache License, Version 2.0 (the
|
||||
@REM "License"); you may not use this file except in compliance
|
||||
@REM with the License. You may obtain a copy of the License at
|
||||
@REM
|
||||
@REM http://www.apache.org/licenses/LICENSE-2.0
|
||||
@REM
|
||||
@REM Unless required by applicable law or agreed to in writing,
|
||||
@REM software distributed under the License is distributed on an
|
||||
@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
||||
@REM KIND, either express or implied. See the License for the
|
||||
@REM specific language governing permissions and limitations
|
||||
@REM under the License.
|
||||
@REM ----------------------------------------------------------------------------
|
||||
|
||||
@REM ----------------------------------------------------------------------------
|
||||
@REM Apache Maven Wrapper startup batch script, version 3.3.2
|
||||
@REM
|
||||
@REM Optional ENV vars
|
||||
@REM MVNW_REPOURL - repo url base for downloading maven distribution
|
||||
@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
|
||||
@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output
|
||||
@REM ----------------------------------------------------------------------------
|
||||
|
||||
@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
|
||||
@SET __MVNW_CMD__=
|
||||
@SET __MVNW_ERROR__=
|
||||
@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
|
||||
@SET PSModulePath=
|
||||
@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
|
||||
IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
|
||||
)
|
||||
@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
|
||||
@SET __MVNW_PSMODULEP_SAVE=
|
||||
@SET __MVNW_ARG0_NAME__=
|
||||
@SET MVNW_USERNAME=
|
||||
@SET MVNW_PASSWORD=
|
||||
@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
|
||||
@echo Cannot start maven from wrapper >&2 && exit /b 1
|
||||
@GOTO :EOF
|
||||
: end batch / begin powershell #>
|
||||
|
||||
$ErrorActionPreference = "Stop"
|
||||
if ($env:MVNW_VERBOSE -eq "true") {
|
||||
$VerbosePreference = "Continue"
|
||||
}
|
||||
|
||||
# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
|
||||
$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
|
||||
if (!$distributionUrl) {
|
||||
Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
|
||||
}
|
||||
|
||||
switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
|
||||
"maven-mvnd-*" {
|
||||
$USE_MVND = $true
|
||||
$distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
|
||||
$MVN_CMD = "mvnd.cmd"
|
||||
break
|
||||
}
|
||||
default {
|
||||
$USE_MVND = $false
|
||||
$MVN_CMD = $script -replace '^mvnw','mvn'
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
# apply MVNW_REPOURL and calculate MAVEN_HOME
|
||||
# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
|
||||
if ($env:MVNW_REPOURL) {
|
||||
$MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
|
||||
$distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
|
||||
}
|
||||
$distributionUrlName = $distributionUrl -replace '^.*/',''
|
||||
$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
|
||||
$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
|
||||
if ($env:MAVEN_USER_HOME) {
|
||||
$MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
|
||||
}
|
||||
$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
|
||||
$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
|
||||
|
||||
if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
|
||||
Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
|
||||
Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
|
||||
exit $?
|
||||
}
|
||||
|
||||
if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
|
||||
Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
|
||||
}
|
||||
|
||||
# prepare tmp dir
|
||||
$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
|
||||
$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
|
||||
$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
|
||||
trap {
|
||||
if ($TMP_DOWNLOAD_DIR.Exists) {
|
||||
try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
|
||||
catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
|
||||
}
|
||||
}
|
||||
|
||||
New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
|
||||
|
||||
# Download and Install Apache Maven
|
||||
Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
|
||||
Write-Verbose "Downloading from: $distributionUrl"
|
||||
Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
|
||||
|
||||
$webclient = New-Object System.Net.WebClient
|
||||
if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
|
||||
$webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
|
||||
}
|
||||
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
|
||||
$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
|
||||
|
||||
# If specified, validate the SHA-256 sum of the Maven distribution zip file
|
||||
$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
|
||||
if ($distributionSha256Sum) {
|
||||
if ($USE_MVND) {
|
||||
Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
|
||||
}
|
||||
Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
|
||||
if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
|
||||
Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
|
||||
}
|
||||
}
|
||||
|
||||
# unzip and move
|
||||
Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
|
||||
Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
|
||||
try {
|
||||
Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
|
||||
} catch {
|
||||
if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
|
||||
Write-Error "fail to move MAVEN_HOME"
|
||||
}
|
||||
} finally {
|
||||
try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
|
||||
catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
|
||||
}
|
||||
|
||||
Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
|
||||
2
pom.xml
2
pom.xml
@ -17,7 +17,7 @@
|
||||
<dependency>
|
||||
<groupId>org.junit.jupiter</groupId>
|
||||
<artifactId>junit-jupiter</artifactId>
|
||||
<version>RELEASE</version>
|
||||
<version>5.11.0</version>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
|
||||
@ -39,8 +39,8 @@ public sealed interface Either<L, R> permits Left, Right {
|
||||
* <br /><br />
|
||||
* This method
|
||||
* applies a function(<i>fn</i>) to the values inside the data type,
|
||||
* returning a new data type(i.e., a new functor) if and only if the the Either
|
||||
* type is instantiated with the <i>Right</i> subtype. Otherwise it leaves the functor
|
||||
* returning a new data type(i.e., a new functor) if and only if the Either
|
||||
* type is instantiated to the <i>Right</i> subtype. Otherwise it leaves the functor
|
||||
* unchanged.
|
||||
* <br /><br />
|
||||
* The type of the resulting functor is the return type specified on the <i>fn</i>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user