Glen Whitney
edfba089e3
Toward its goal, this commit also:
* Adds a new section of logical functions, and defines `not`, `and`,
`or` for all current types.
* Extends `OneOf` choice/union type to allow argument types that are
themselves `OneOf` types.
* Adds a readable .toString() method for TypePatterns.
* Defines negate (as a no-op) and isnan (as always true) for the Undefined
type
* Extends comparisons to the Undefined type (to handle comparing vectors
of different lengths)
9 lines
360 B
JavaScript
9 lines
360 B
JavaScript
import {BooleanT} from './BooleanT.js'
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import {Returns} from '#core/Type.js'
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import {match} from '#core/TypePatterns.js'
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export const not = match(BooleanT, Returns(BooleanT, p => !p))
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export const and = match(
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[BooleanT, BooleanT], Returns(BooleanT, (p, q) => p && q))
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export const or = match(
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[BooleanT, BooleanT], Returns(BooleanT, (p, q) => p || q))
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