IfThenElseCondition

The IfThenElseCondition allows for conditional branching, where different conditions are executed based on the outcome of an initial "if" condition. It operates with a simple "if-then-else" structure and provides flexibility in determining the behaviour when a condition is true or false.

A condition that allows for if-then-else branching based on underlying conditions i.e. IF CONDITION_A THEN CONDITION_B ELSE CONDITION_C.

It is composed of:

• ifCondition: A required field that specifies the condition to be evaluated first. If the condition evaluates to true, the thenCondition is executed; if it evaluates to false, the elseCondition is executed.

• thenCondition: A required field that specifies the action or condition to execute if the ifCondition evaluates to true.

• elseCondition: A required field that specifies the action or condition to execute if the ifCondition evaluates to false. This can be a CONDITIONor a boolean value (true or false), specifying the result when the ifCondition is false. This gives users control over what the overall condition returns when the ifCondition is false.

When combined with other conditions (e.g., SequentialCondition, CompoundCondition), the IfThenElseCondition allows for complex, branching workflows.

Examples

IF conditionA then conditionB else conditionC

import { conditions } from '@nucypher/taco';

const conditionA = ...
const conditionB = ...
const conditionC = ...

const condition = new conditions.ifThenElse.IfThenElseCondition({
  ifCondition: conditionA,
  thenCondition: conditionB,
  elseCondition: conditionC,
});

IF conditionA then conditionB else True

import { conditions } from '@nucypher/taco';

const conditionA = ...
const conditionB = ...

const condition = new conditions.ifThenElse.IfThenElseCondition({
  ifCondition: conditionA,
  thenCondition: conditionB,
  elseCondition: true,
});

Nested IfThenElseCondition

import { conditions } from '@nucypher/taco';

const conditionA = ...
const conditionB = ...
const conditionC = ...
const conditionD = ...

const nestedIfThenElseCondition = new conditions.ifThenElse.IfThenElseCondition({
  ifCondition: conditionA,
  thenCondition: conditionB,
  elseCondition: false,
});

const condition = new conditions.ifThenElse.IfThenElseCondition({
  ifCondition: conditionC,
  thenCondition: conditionD,
  elseCondition: nestedIfThenElseCondition,
});

Individual conditions within the IfThenElseCondition can use different chain IDs as long as the chain IDs are supported by the domain network being used.

Development References

• Client-side: https://github.com/nucypher/taco-web/pull/593

• Server-side: https://github.com/nucypher/nucypher/pull/3558