Syntax

OSL programming is made up of 6 different types of syntax.

Commands

Commands are the backbone of all osl scripting, they take inputs and return nothing. Inputs can be raw data, such as a string

command input input input

goto 0 0

Assignments

Assignments are any line that has an assignment operator as the second token.

variable assignment input

var = 10

Methods

Methods allow you to modify the data you input into them, and they do return a value.

log 10.sin
// logs the sin of 10 to the console

Using Methods As Commands

variable.method()
// this will set the value in the variable to the result of the method.

variable = variable.method()
// this is equivalent

Functions

Functions take parameters and no inputs, and are mostly used for when the function isn’t meant to modify any specific variable but rather calculate a value based on its parameters

log min(10,5)
// logs 5 to the console

Statements

Statements are containers for commands, and allow for conditionals and looping.

Examples of statements are shown below:

if boolean (

)

loop 10 (

)

for i 10 (

)

Operators

Operators take in values from their left and right tokens and calculate a response to replace itself and those two tokens with the output of the calculation. Operators include logic like and, or, nor, nand.. etc.

log 10 + 5
// logs 15 to the console

// when this is evaluated, the script becomes
log 15

// all evaluation of operators are done from left to right