CodeBuilder

Compile time code generation made simple.

• Intuitive and powerful API: Use an API built around the Builder pattern and immutable objects to generate complex code quickly and safely.
• Quick to learn and easy to use: CodeBuilder includes a powerful resolver engine which automatically generates names and ensures consistency and formatting across the generated code. All you need to worry about is the generated code itself!

How to add it to your project

You can try it out by adding this dependency to your annotation processor module:

compile 'com.github.wrdlbrnft:code-builder:0.3.0.15'

Basic Hello World example

final Implementation implementation = new Implementation.Builder()
        .setName("HelloWorld")
        .setModifiers(EnumSet.of(Modifier.PUBLIC))
        .addMethod(new Method.Builder()
                .setName("main")
                .setModifiers(EnumSet.of(Modifier.PUBLIC, Modifier.STATIC))
                .setCode(new ExecutableBuilder() {
                    @Override
                    protected List<Variable> createParameters() {
                        return new ArrayList<>();
                    }

                    @Override
                    protected void write(Block block) {
                        block.append("System.out.println(")
                                .append(Values.of("Hello World!"))
                                .append(");");
                    }
                })
                .build())
        .build();

final SourceFile sourceFile = SourceFile.create(processingEnv, "com.example");
sourceFile.write(implementation);
sourceFile.flushAndClose();