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81 lines
2.3 KiB
81 lines
2.3 KiB
3 years ago
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import type {
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CodeKeywordDefinition,
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ErrorObject,
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KeywordErrorDefinition,
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AnySchema,
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} from "../../types"
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import type {SchemaObjCxt} from "../../compile"
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import type {KeywordCxt} from "../../compile/validate"
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import {_, str, not, Name} from "../../compile/codegen"
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import {alwaysValidSchema, checkStrictMode} from "../../compile/util"
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export type IfKeywordError = ErrorObject<"if", {failingKeyword: string}, AnySchema>
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const error: KeywordErrorDefinition = {
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message: ({params}) => str`must match "${params.ifClause}" schema`,
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params: ({params}) => _`{failingKeyword: ${params.ifClause}}`,
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}
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const def: CodeKeywordDefinition = {
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keyword: "if",
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schemaType: ["object", "boolean"],
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trackErrors: true,
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error,
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code(cxt: KeywordCxt) {
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const {gen, parentSchema, it} = cxt
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if (parentSchema.then === undefined && parentSchema.else === undefined) {
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checkStrictMode(it, '"if" without "then" and "else" is ignored')
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}
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const hasThen = hasSchema(it, "then")
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const hasElse = hasSchema(it, "else")
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if (!hasThen && !hasElse) return
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const valid = gen.let("valid", true)
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const schValid = gen.name("_valid")
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validateIf()
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cxt.reset()
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if (hasThen && hasElse) {
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const ifClause = gen.let("ifClause")
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cxt.setParams({ifClause})
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gen.if(schValid, validateClause("then", ifClause), validateClause("else", ifClause))
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} else if (hasThen) {
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gen.if(schValid, validateClause("then"))
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} else {
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gen.if(not(schValid), validateClause("else"))
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}
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cxt.pass(valid, () => cxt.error(true))
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function validateIf(): void {
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const schCxt = cxt.subschema(
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{
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keyword: "if",
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compositeRule: true,
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createErrors: false,
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allErrors: false,
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},
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schValid
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)
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cxt.mergeEvaluated(schCxt)
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}
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function validateClause(keyword: string, ifClause?: Name): () => void {
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return () => {
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const schCxt = cxt.subschema({keyword}, schValid)
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gen.assign(valid, schValid)
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cxt.mergeValidEvaluated(schCxt, valid)
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if (ifClause) gen.assign(ifClause, _`${keyword}`)
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else cxt.setParams({ifClause: keyword})
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}
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}
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},
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}
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function hasSchema(it: SchemaObjCxt, keyword: string): boolean {
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const schema = it.schema[keyword]
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return schema !== undefined && !alwaysValidSchema(it, schema)
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}
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export default def
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