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1937aa1f1d
* fix: rely on equal for computing contains This change allows contains to be computed using the toValue of the items in the array. Before this change if I had an array of "Drop" `contains` would not match against the value. * Apply suggestions from code review Co-authored-by: Jun Yang <[email protected]> --------- Co-authored-by: Jun Yang <[email protected]>
61 lines
2.1 KiB
TypeScript
61 lines
2.1 KiB
TypeScript
import { isComparable } from '../drop/comparable'
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import { Context } from '../context'
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import { toValue } from '../util'
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import { isFalsy, isTruthy } from '../render/boolean'
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import { isArray, isString } from '../util/underscore'
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export type UnaryOperatorHandler = (operand: any, ctx: Context) => boolean;
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export type BinaryOperatorHandler = (lhs: any, rhs: any, ctx: Context) => boolean;
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export type OperatorHandler = UnaryOperatorHandler | BinaryOperatorHandler;
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export type Operators = Record<string, OperatorHandler>
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export const defaultOperators: Operators = {
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'==': equal,
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'!=': (l: any, r: any) => !equal(l, r),
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'>': (l: any, r: any) => {
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if (isComparable(l)) return l.gt(r)
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if (isComparable(r)) return r.lt(l)
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return toValue(l) > toValue(r)
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},
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'<': (l: any, r: any) => {
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if (isComparable(l)) return l.lt(r)
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if (isComparable(r)) return r.gt(l)
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return toValue(l) < toValue(r)
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},
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'>=': (l: any, r: any) => {
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if (isComparable(l)) return l.geq(r)
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if (isComparable(r)) return r.leq(l)
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return toValue(l) >= toValue(r)
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},
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'<=': (l: any, r: any) => {
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if (isComparable(l)) return l.leq(r)
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if (isComparable(r)) return r.geq(l)
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return toValue(l) <= toValue(r)
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},
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'contains': (l: any, r: any) => {
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l = toValue(l)
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if (isArray(l)) return l.some((i) => equal(i, r))
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if (isString(l)) return l.indexOf(toValue(r)) > -1
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return false
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},
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'not': (v: any, ctx: Context) => isFalsy(toValue(v), ctx),
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'and': (l: any, r: any, ctx: Context) => isTruthy(toValue(l), ctx) && isTruthy(toValue(r), ctx),
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'or': (l: any, r: any, ctx: Context) => isTruthy(toValue(l), ctx) || isTruthy(toValue(r), ctx)
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}
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function equal (lhs: any, rhs: any): boolean {
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if (isComparable(lhs)) return lhs.equals(rhs)
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if (isComparable(rhs)) return rhs.equals(lhs)
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lhs = toValue(lhs)
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rhs = toValue(rhs)
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if (isArray(lhs)) {
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return isArray(rhs) && arrayEqual(lhs, rhs)
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}
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return lhs === rhs
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}
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function arrayEqual (lhs: any[], rhs: any[]): boolean {
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if (lhs.length !== rhs.length) return false
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return !lhs.some((value, i) => !equal(value, rhs[i]))
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}
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