Cangjie is a new programming language with syntax similar to many modern programming languages. A brief description of Cangjie is below.

Package declaration

At the beginning of the program, there is a package declaration. For example, package a.b.c

A package contains the following type definitions. There are four kinds of type definitions: interface, class, struct, and enum.

• Each type definition contains a list of member definitions. There are two kinds of member definitions: prop and func.

Both type definition and member definition have a visibility modifier, including public, protected, private and default. There may be some comments before the type definition or member definitions.

Interface definition

For example,

public interface Foo {
    func f(a: String, b: Int64): String
    prop g: Int64
}

IMPORTANT: all member definitions in an interface are public.

Class definition

For example,

public class Foo {
    public init(v: String) { }
    private init(vv: Int64) { }
    public func f(a: String, b: Int64): String { ... }
    protected prop g: Int64 {
        get() { return 1}
    }
}

init is a special constructor method.

Struct definition

For example,

struct Foo {
    func f(a: String, b: Int64): String { ... }
    prop g: Int64 {
        get() { return 1}
    }
}

Enum definition

For Example,

enum Foo {
    | A
    | B(String)

    func f(a: String, b: Int64): String { ... }

    prop g: Int64 {
        get() { return 1}
    }
}

where `A` and `B` are enumerations.