Syntax - Glebanister/peach GitHub Wiki

Integers

Integer can contain only digits. Integer range is from -2147483648 to 2147483647.

Unary operators

Unary operator is placed before value. It takes this value and processes it.

Unary operators in peach in descending order of priority:

Operator	Meaning
!	logical negation

Binary operators

Binary operator is placed between two values. It takes corresponding values and processes them.

Binary operators in peach in descending order of priority:

Operator	Meaning
**	binary power
*	multiplication
/	integer division
%	taking modulo
+	summation
-	subtraction
==	equal
!=	not equal
>	greater
>=	greater or equal
<	less
<=	less or equal
&	logical and
`	`

Expressions

Expressions may contain values, operatos, assignation operators, variables and round brackets.

For example:

(11 + 12) * 100
!(1 + variable) ** 100 - 1
(12) ** (10)

Variables

Variable name can start with latin or underscore and can contain latin letters, digits and underscores.

You can't use undeclared variable. You can declare it with let keyword:

let variable = 239
let zero_variable

In this case, variable will be set to 239 and zero_variable will have default value 0. Variable declaration can be placed only in indentation block beginning.

Conditional expressions

Conditional expressions contains if condition, if way expression and else way expression. If if condition is not zero, then if way evaluates, else way otherwise. else way is not required.

Syntax:

if if_condition
    if_way
else
    else_way

if way and else way requires one indentation block.

Examples:

let variable = 4
let result = 4
if !(variable % 2)
    result *= 10
else
    result -= 1

let a = 0
let res = 12
if a
    res = 2 ** 10

While loops

Contains condition and body. body evaluates while condition not equals to 0.

Syntax:

while condition
    body

Examples:

let infinite_loop_iterations
while 1
    infinite_loop_iterations += 1

let n = 123
let even = 0
let odd = 0
while n > 0
    if n % 2 == 0
        even += 1
    else
        odd += 1