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Reference: Failures

Failures · rule

failure.unknown_mapping

Mapping names a condition the operation does not have.

Area 4, Failures; not declinable; the next step is usually the agent's.

A construction's arms are the rules of its type:

example
type Quantity = Int {    min: 1    max: 1000}type QuantityTooLarge = Failure {    kind: FailureKind.invalid_value}function doubled(quantity: Quantity) fails QuantityTooLarge -> Quantity {    var result: Quantity = attempt Quantity(quantity * 2) {        maximum: QuantityTooLarge    }    return result}
text
error: `Quantity(...)` has no `maximum:` condition to map --> main.jadpo:12:9   |12 |         maximum: QuantityTooLarge   |         ^^^^^^^ not a condition here  reason: A construction's arms are the rules of its type and the types it builds on; `Quantity(...)`'s are `min` and `max`, and `invalid:` covers any without an arm of its own.  next: Remove `maximum: ...`, or map one of `min` and `max` instead (agent)  rule: failure.unknown_mapping  help: https://jadpo.dev/docs/errors/failure.unknown_mappingcheck failed: 1 error, 1 file

Markdown for agents: /docs/errors/failure.unknown_mapping.md.Built from Jadpo main at a707efb.