FormulaFunction class
A function defined by a variable with parameters: its parameters and the formula body that computes its result from them.
Calling it evaluates body with each parameter reading the argument at its position (missing ones are null). Every other path is read from scope: the app's variables. Calls nest up to maxDepth deep, so a runaway recursion ends with null instead of a crash.
Constructors
-
FormulaFunction(List<
String> parameters, String body, FormulaPathResolver scope) -
Creates a FormulaFunction.
const
Properties
- body → String
-
The formula, without
${= }.final -
externalPaths
→ Set<
String> -
The paths body reads that aren't its parameters: the variables a
call depends on.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
-
parameters
→ List<
String> -
Names of the parameters, in order.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scope → FormulaPathResolver
-
Reads the variables the body uses besides its parameters.
final
Methods
-
call(
List< Object?> arguments) → Object? -
The result of the body for
arguments. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited