Belish

A programming language similar to human natural language expression
A programming language similar to English syntactic structure

Naming

Because this is a kind of programming language similar to English syntax, but with some ambiguity removed, the structure is rigorous, and then Berry(My favorite fruit) and English are spliced together, that is, Belish.

Core idea

Subject predicate object structure.
What's it meaning?

Subject

This is the action initiator, that is, the object that calls a function.

Predicate

This represents the action to be performed, that is, the function name.

Object

This represents the object of an action operation, which is also the parameter of a function.

Example

I say "Hello!";

I is the subject, say is the predicate, "Hello!" is the object.
If we translate this code into JavaScript, it is written as follows:

I.say("Hello!");

my sister say "Hello,", "John!";

my sister is the subject, say is the predicate, "Hello,", "John!" is the object.
If we translate this code into JavaScript, it is written as follows:

I.sister.say("Hello,", "John!");

Word type(identifier type)

Nouns

Variables or literals

Verbs

Functions

Pronouns

Used to refer to an object

Conjunctions

For logical operation Such as and or

Basic Syntax

Basic Sentence Structure

<Subject> <Predicate> <Objects>.

Declare Verb

def `verb-name`(`args`) {
    # xxx
}

Declare Class::Verb

def `verb-name` -> `class-name`(`args`) {
    # xxx
}

Declare Noun

let `noun` = `value`;

Declare Pronoun

let `pronoun` -> `value`;# Direct reference(Refers to the address of its value)

let `pronoun` => `value`;# Indirect reference(For a macro, it refers to the text 'value`)

Literals

Number(/(0[xob])?d+(.d+)?/), String(/"."/ or /'.'/), Null(null), Undefined(null), Object(/{.*}/)

Operators

=, :, ==, !=, <=, >=, <, >, ( ), [ ], { }, ., (comma), &, |, ^, ~, &&, ||, !, +, -, *, /, %, **, <<, >>, +=, -=, *-, /=, %=, **=, <<=, >>=, &=, |=, ^=, in, of, ~~

in/of operator

Format: <expr> in <expr>
Used to detect whether the second expr has a value with the keyword expr1.

Operator ~~

Format: n~~m
Returns all integers in an interval [n, m)
note: If n, m is a floating point number, then the system automatically integrates the value of n, m downwards.

Get properties in an object

Use operator. to get properties in an object
Demo:

let b = a.b;

Use operator[] also can get properties
Demo:

let b = a["b"];

Prioritization

"[" "." 15
"(" 14
"++" "--" "!" "~" "**" 13
"" "/" "%" 12
"+" "-" 11
"<<" ">>" 10
">" ">=" "<" "<=" 9
"==" "!=" 8
"&" 7
"^" 6
"|" 5
"&&" 4
"||" "~~" 3
"=" "=" "/=" "%=" "+=" "-=" ">>=" "<<=" "^=" "&=" "|=" "in" "of" "=>" "->" 2
"," 1

Comments

// xxx and # xxx are Single-Line Comments.
/* xxx */ is the Multiline Comment.

Imperative Structure

We can omit the subject and refer to this.
Example:

print "Hello world!";