User-defined functions
In addition to built-in functions, you can declare your own.
User-defined functions are declared in the functions
block. You cannot use variables in them: you can only pass their values as function arguments. If your function name matches the name of a built-in function, your function will take priority.
Functions can be declared in nested elements. If the name and arguments of several user-defined functions match, the function closest to the call point will take priority.
Field values
Example of function declaration
"functions": [
{
"name": "increment",
"body": "@{value + 1}",
"return_type": "integer",
"arguments": [
{
"name": "value",
"type": "integer"
}
]
}
]
The declared function returns the passed argument "value"
increased by 1.
When declaring a function, you need to fill in the following fields:
-
"name"
— name; -
"body"
— function body; -
"return_type"
— type of returned data; -
"arguments"
— list of function arguments. Each argument corresponds to a pair of"name"
(name) and"type"
(type).