Quick Look

Hello, World! This is mayonnaise, an interpreted programming language written from scratch.

Let’s take a quick look.

Variables

The easiest part of this language, you can assign variables like python and ruby.

a = 1
b = 2
c = "this is a string"

Importing

Easy!

Example directory structure:

To import lib.mayo;

import lib

mayonnaise automatically finds the file in the directory and the subdirectories.

Subdirectory example:

Example directory structure:

import lib

Functions

Initializing functions

Quick example:

def demo
    return 0
enddef

Built-in functions

There is some essential built-in functions like log, stdin or construct. The other functions can be found in the Documentation.

log

This function is just for writing data to out stream (stdout).

A simple example about log function:

log("Hello, World!")

But, this also writes "\n" to end of the stream. To prevent this, you should add the false option to the 2nd argument.

log("Hello, ", false)
log("World!")

Output:

Hello, World!

stdin

This function gets data from stdin. (std::cin type)

Quick Example:

a = stdin()
log(a)

readin

This function gets data from stdin. (std::readline type)

Quick Example:

a = readin()
log(a)

construct (BETA)

Beta alert!

This function helps creating structs and classes.

Function structure:

construct ( arg1,        arg2,          arg3...arg99  )
            ^            ^              ^
            object type  |              |
                         object name    |
                                        member names

Creating Structures

The object type for struct is type:struct.

Example:

construct(type:struct, "demo", "name", "val")

C++ equivalent:

struct demo{
    <obj> name;
    <obj> val;
};

Creating Classes

The object type for class is type:class.

Unlike struct, you can link functions to class.

Example:

def function
    return 123
enddef

construct(type:class, "demo", "name", "val", func:function)
                                           # in this point,
                                           # the function is
                                           # linked to:
                                           # demo.function()

## calling linked function
demo.function()

C++ equivalent:

class demo{
    public:
        <obj> name;
        <obj> val;

        <obj> function(){
            // linked code
        }
};

Expression Blocks

If

Classic if block.

Example:

a = 3
b = 4

if a < b
    log("b is greater than a")
endif

For

Classic for block.

Example:

a = 1
limit = 10

for a <= limit
    log(a)
endfor

Rangeloop

Mayonnaise special feature.

Creating a loop with a range:

rangeloop x in range(0, 10)
    log(x + 1)
endrange

Documentation