Phrase

Boolean expression evaluation purely written in Swift for macOS & Linux without any dependencies.

• Documentation

Usage

let expression = try Phrase("list != nil && list.count > 3")
expression.context = [
   "list": [1,2,3,4,5]
]
if try expression.evaluate() {
   ...
} else {
   ...
}

Operators

Prefix-Operators

Operators which require a succeeding node

• !

Infix-Operators

Operators which require a preceding and a succeeding node

Logical:

• &&
• ||

Equaltiy:

• ==
• !=

Comparing:

• >
• >=
• <
• <=

Postfix-Operators

Operators which require a preceeding node

• count

returns the element count of the preceeding array node