https://github.com/annimon-tutorials/javac-plugin-demo

Source code for tutorial
https://github.com/annimon-tutorials/javac-plugin-demo

extension-methods javac operator-overloading plugin

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Source code for tutorial

• Host: GitHub
• URL: https://github.com/annimon-tutorials/javac-plugin-demo
• Owner: annimon-tutorials
• License: mit
• Created: 2017-03-22T19:26:35.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-03-22T19:28:06.000Z (almost 8 years ago)
• Last Synced: 2023-10-27T21:31:39.567Z (about 1 year ago)
• Topics: extension-methods, javac, operator-overloading, plugin
• Language: Java
• Homepage: https://annimon.com/article/2626
• Size: 68.4 KB
• Stars: 8
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Javac Plugin Demo

## CharStat

Calculates number of characters of the compiled source code.

## MethodsCount

Calculates methods count per source file and outputs overall methods count.

## MapAccess

Allows to access the `Map` with string literal key as the array:

```java

Map map = new HashMap<>();

map["key"] = "ten"; // map.put("key", "ten")

System.out.println(map["key"]); // map.get("key")

```

## OperatorOverloading

Overloads `+ - * /` operators to map to `add subtract multiply divide` methods.

```java

BigInteger x1 = BigInteger.TEN;

BigInteger x2 = BigInteger.valueOf(120);

BigInteger x3 = x1 + x2;

// BigInteger x3 = x1.add(x2);

BigInteger x4 = BigInteger.valueOf(2) * x3;

// BigInteger x4 = BigInteger.valueOf(2).multiply(x3);

BigInteger x5 = x4 - x2 / x1 + x3;

// BigInteger x5 = x4.subtract(x2.divide(x1)).add(x3);

```

## ExtensionMethods

Allows to use extension methods. The extension method should be declared as `public static` in the same class.

```java

public static IntStream filterNot(IntStream stream, IntPredicate predicate) {

    return stream.filter(predicate.negate());

}

public static > Stream sortBy(Stream stream, Function super T, ? extends R> f) {

    return stream.sorted((o1, o2) -> f.apply(o1).compareTo(f.apply(o2)));

}

apps.stream()

        .filterNot(Application::isInstalled)

        .sortBy(Application::getDownloadingTime())

```