Pad

Pad is programming language.

Build

How to build of the pad.

UNIX & Windows

$ git clone https://github.com/narupo/pad
$ cd pad
$ make init && make
$ ./build/pad -h

In Windows, Recommend using TDM-GCC.

Syntax and feature

Bubble sort program.

{@
    // Bubble sort program
    vec = [3, 2, 4, 1]
    k = 0
    flag = true

    for flag:
        flag = false
        for i = 0; i < len(vec) - 1 - k; i += 1:
            if vec[i] > vec[i + 1]:
                tmp = vec[i]
                vec[i] = vec[i + 1]
                vec[i + 1] = tmp
                flag = true
            end
        end
        k += 1
    end

    for i = 0; i < len(vec); i += 1:
        puts(vec[i])
    end
@}

Structure and functions and methods.

{@
    struct Animal:
        name = nil

        def new(name):
            return Animal(name)
        end

        met getName(self):
            return self.name
        end
    end

    animal = Animal.new("Tama")
    puts(animal.getName())
@}

Functions and inject-block statement.

{@
    def base(title):
        block header: @}
            <h1>{: title :}</h1>
        {@ end

        block content:
        end
    end

    def index(title) extends base:
        inject content: @}
            <p>Welcome to my homepage!</p>
        {@ end

        super(title)
    end

    index("Pad")
@}

Pointer.

{@
    s = "Hello"

    def addWorld(pS):
        *pS += ", World!"
    end

    addWorld(&s)

    puts(s)  // Hello, World!
@}

Exception.

{@
    try:
        1 / 0
    catch ZeroDivisionError as e:
        eputs(e.what())  // zero division error
    end
@}

Vector and Dictionary.

{@
    v1 = [1, 2, 3]
    v2 = Vec()

    d1 = { "a": 1, b: 2 }
    d2 = Dict()
@}

Chain expression.

{@
    from "unix" import cat, write

    cat("README.md").upper() # write($r, "out.md")
@}

Development policy

Pad is interpreter like C
Pad keeps simple
Pad needs many test cases
Pad needs many standard libraries