1 | import type {
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2 | CodeKeywordDefinition,
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3 | ErrorObject,
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4 | KeywordErrorDefinition,
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5 | AnySchema,
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6 | } from "../../types"
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7 | import type {KeywordCxt} from "../../compile/validate"
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8 | import {_, str, not, Name} from "../../compile/codegen"
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9 | import {alwaysValidSchema, checkStrictMode, Type} from "../../compile/util"
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10 |
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11 | export type AdditionalItemsError = ErrorObject<"additionalItems", {limit: number}, AnySchema>
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12 |
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13 | const error: KeywordErrorDefinition = {
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14 | message: ({params: {len}}) => str`must NOT have more than ${len} items`,
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15 | params: ({params: {len}}) => _`{limit: ${len}}`,
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16 | }
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17 |
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18 | const def: CodeKeywordDefinition = {
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19 | keyword: "additionalItems" as const,
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20 | type: "array",
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21 | schemaType: ["boolean", "object"],
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22 | before: "uniqueItems",
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23 | error,
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24 | code(cxt: KeywordCxt) {
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25 | const {parentSchema, it} = cxt
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26 | const {items} = parentSchema
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27 | if (!Array.isArray(items)) {
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28 | checkStrictMode(it, '"additionalItems" is ignored when "items" is not an array of schemas')
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29 | return
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30 | }
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31 | validateAdditionalItems(cxt, items)
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32 | },
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33 | }
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34 |
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35 | export function validateAdditionalItems(cxt: KeywordCxt, items: AnySchema[]): void {
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36 | const {gen, schema, data, keyword, it} = cxt
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37 | it.items = true
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38 | const len = gen.const("len", _`${data}.length`)
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39 | if (schema === false) {
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40 | cxt.setParams({len: items.length})
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41 | cxt.pass(_`${len} <= ${items.length}`)
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42 | } else if (typeof schema == "object" && !alwaysValidSchema(it, schema)) {
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43 | const valid = gen.var("valid", _`${len} <= ${items.length}`)
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44 | gen.if(not(valid), () => validateItems(valid))
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45 | cxt.ok(valid)
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46 | }
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47 |
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48 | function validateItems(valid: Name): void {
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49 | gen.forRange("i", items.length, len, (i) => {
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50 | cxt.subschema({keyword, dataProp: i, dataPropType: Type.Num}, valid)
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51 | if (!it.allErrors) gen.if(not(valid), () => gen.break())
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52 | })
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53 | }
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54 | }
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55 |
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56 | export default def
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