751 lines
20 KiB
JavaScript
751 lines
20 KiB
JavaScript
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'use strict';
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const Assert = require('@hapi/hoek/lib/assert');
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const Clone = require('@hapi/hoek/lib/clone');
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const Ignore = require('@hapi/hoek/lib/ignore');
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const Reach = require('@hapi/hoek/lib/reach');
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const Common = require('./common');
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const Errors = require('./errors');
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const State = require('./state');
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const internals = {
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result: Symbol('result')
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};
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exports.entry = function (value, schema, prefs) {
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let settings = Common.defaults;
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if (prefs) {
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Assert(prefs.warnings === undefined, 'Cannot override warnings preference in synchronous validation');
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Assert(prefs.artifacts === undefined, 'Cannot override artifacts preference in synchronous validation');
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settings = Common.preferences(Common.defaults, prefs);
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}
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const result = internals.entry(value, schema, settings);
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Assert(!result.mainstay.externals.length, 'Schema with external rules must use validateAsync()');
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const outcome = { value: result.value };
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if (result.error) {
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outcome.error = result.error;
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}
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if (result.mainstay.warnings.length) {
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outcome.warning = Errors.details(result.mainstay.warnings);
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}
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if (result.mainstay.debug) {
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outcome.debug = result.mainstay.debug;
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}
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if (result.mainstay.artifacts) {
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outcome.artifacts = result.mainstay.artifacts;
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}
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return outcome;
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};
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exports.entryAsync = async function (value, schema, prefs) {
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let settings = Common.defaults;
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if (prefs) {
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settings = Common.preferences(Common.defaults, prefs);
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}
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const result = internals.entry(value, schema, settings);
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const mainstay = result.mainstay;
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if (result.error) {
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if (mainstay.debug) {
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result.error.debug = mainstay.debug;
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}
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throw result.error;
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}
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if (mainstay.externals.length) {
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let root = result.value;
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const errors = [];
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for (const external of mainstay.externals) {
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const path = external.state.path;
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const linked = external.schema.type === 'link' ? mainstay.links.get(external.schema) : null;
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let node = root;
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let key;
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let parent;
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const ancestors = path.length ? [root] : [];
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const original = path.length ? Reach(value, path) : value;
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if (path.length) {
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key = path[path.length - 1];
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let current = root;
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for (const segment of path.slice(0, -1)) {
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current = current[segment];
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ancestors.unshift(current);
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}
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parent = ancestors[0];
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node = parent[key];
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}
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try {
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const createError = (code, local) => (linked || external.schema).$_createError(code, node, local, external.state, settings);
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const output = await external.method(node, {
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schema: external.schema,
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linked,
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state: external.state,
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prefs,
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original,
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error: createError,
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errorsArray: internals.errorsArray,
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warn: (code, local) => mainstay.warnings.push((linked || external.schema).$_createError(code, node, local, external.state, settings)),
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message: (messages, local) => (linked || external.schema).$_createError('external', node, local, external.state, settings, { messages })
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});
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if (output === undefined ||
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output === node) {
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continue;
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}
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if (output instanceof Errors.Report) {
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mainstay.tracer.log(external.schema, external.state, 'rule', 'external', 'error');
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errors.push(output);
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if (settings.abortEarly) {
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break;
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}
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continue;
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}
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if (Array.isArray(output) &&
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output[Common.symbols.errors]) {
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mainstay.tracer.log(external.schema, external.state, 'rule', 'external', 'error');
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errors.push(...output);
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if (settings.abortEarly) {
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break;
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}
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continue;
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}
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if (parent) {
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mainstay.tracer.value(external.state, 'rule', node, output, 'external');
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parent[key] = output;
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}
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else {
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mainstay.tracer.value(external.state, 'rule', root, output, 'external');
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root = output;
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}
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}
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catch (err) {
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if (settings.errors.label) {
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err.message += ` (${(external.label)})`; // Change message to include path
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}
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throw err;
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}
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}
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result.value = root;
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if (errors.length) {
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result.error = Errors.process(errors, value, settings);
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if (mainstay.debug) {
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result.error.debug = mainstay.debug;
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}
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throw result.error;
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}
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}
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if (!settings.warnings &&
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!settings.debug &&
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!settings.artifacts) {
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return result.value;
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}
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const outcome = { value: result.value };
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if (mainstay.warnings.length) {
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outcome.warning = Errors.details(mainstay.warnings);
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}
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if (mainstay.debug) {
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outcome.debug = mainstay.debug;
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}
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if (mainstay.artifacts) {
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outcome.artifacts = mainstay.artifacts;
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}
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return outcome;
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};
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internals.Mainstay = class {
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constructor(tracer, debug, links) {
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this.externals = [];
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this.warnings = [];
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this.tracer = tracer;
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this.debug = debug;
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this.links = links;
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this.shadow = null;
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this.artifacts = null;
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this._snapshots = [];
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}
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snapshot() {
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this._snapshots.push({
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externals: this.externals.slice(),
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warnings: this.warnings.slice()
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});
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}
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restore() {
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const snapshot = this._snapshots.pop();
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this.externals = snapshot.externals;
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this.warnings = snapshot.warnings;
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}
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commit() {
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this._snapshots.pop();
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}
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};
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internals.entry = function (value, schema, prefs) {
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// Prepare state
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const { tracer, cleanup } = internals.tracer(schema, prefs);
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const debug = prefs.debug ? [] : null;
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const links = schema._ids._schemaChain ? new Map() : null;
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const mainstay = new internals.Mainstay(tracer, debug, links);
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const schemas = schema._ids._schemaChain ? [{ schema }] : null;
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const state = new State([], [], { mainstay, schemas });
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// Validate value
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const result = exports.validate(value, schema, state, prefs);
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// Process value and errors
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if (cleanup) {
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schema.$_root.untrace();
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}
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const error = Errors.process(result.errors, value, prefs);
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return { value: result.value, error, mainstay };
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};
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internals.tracer = function (schema, prefs) {
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if (schema.$_root._tracer) {
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return { tracer: schema.$_root._tracer._register(schema) };
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}
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if (prefs.debug) {
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Assert(schema.$_root.trace, 'Debug mode not supported');
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return { tracer: schema.$_root.trace()._register(schema), cleanup: true };
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}
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return { tracer: internals.ignore };
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};
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exports.validate = function (value, schema, state, prefs, overrides = {}) {
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if (schema.$_terms.whens) {
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schema = schema._generate(value, state, prefs).schema;
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}
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// Setup state and settings
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if (schema._preferences) {
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prefs = internals.prefs(schema, prefs);
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}
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// Cache
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if (schema._cache &&
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prefs.cache) {
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const result = schema._cache.get(value);
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state.mainstay.tracer.debug(state, 'validate', 'cached', !!result);
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if (result) {
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return result;
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}
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}
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// Helpers
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const createError = (code, local, localState) => schema.$_createError(code, value, local, localState || state, prefs);
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const helpers = {
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original: value,
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prefs,
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schema,
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state,
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error: createError,
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errorsArray: internals.errorsArray,
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warn: (code, local, localState) => state.mainstay.warnings.push(createError(code, local, localState)),
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message: (messages, local) => schema.$_createError('custom', value, local, state, prefs, { messages })
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};
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// Prepare
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state.mainstay.tracer.entry(schema, state);
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const def = schema._definition;
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if (def.prepare &&
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value !== undefined &&
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prefs.convert) {
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const prepared = def.prepare(value, helpers);
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if (prepared) {
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state.mainstay.tracer.value(state, 'prepare', value, prepared.value);
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if (prepared.errors) {
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return internals.finalize(prepared.value, [].concat(prepared.errors), helpers); // Prepare error always aborts early
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}
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value = prepared.value;
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}
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}
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// Type coercion
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if (def.coerce &&
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value !== undefined &&
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prefs.convert &&
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(!def.coerce.from || def.coerce.from.includes(typeof value))) {
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const coerced = def.coerce.method(value, helpers);
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if (coerced) {
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state.mainstay.tracer.value(state, 'coerced', value, coerced.value);
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if (coerced.errors) {
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return internals.finalize(coerced.value, [].concat(coerced.errors), helpers); // Coerce error always aborts early
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}
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value = coerced.value;
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}
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}
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// Empty value
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const empty = schema._flags.empty;
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if (empty &&
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empty.$_match(internals.trim(value, schema), state.nest(empty), Common.defaults)) {
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state.mainstay.tracer.value(state, 'empty', value, undefined);
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value = undefined;
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}
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// Presence requirements (required, optional, forbidden)
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const presence = overrides.presence || schema._flags.presence || (schema._flags._endedSwitch ? null : prefs.presence);
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if (value === undefined) {
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if (presence === 'forbidden') {
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return internals.finalize(value, null, helpers);
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}
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if (presence === 'required') {
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return internals.finalize(value, [schema.$_createError('any.required', value, null, state, prefs)], helpers);
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}
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if (presence === 'optional') {
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if (schema._flags.default !== Common.symbols.deepDefault) {
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return internals.finalize(value, null, helpers);
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}
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state.mainstay.tracer.value(state, 'default', value, {});
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value = {};
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}
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}
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else if (presence === 'forbidden') {
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return internals.finalize(value, [schema.$_createError('any.unknown', value, null, state, prefs)], helpers);
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}
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// Allowed values
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const errors = [];
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if (schema._valids) {
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const match = schema._valids.get(value, state, prefs, schema._flags.insensitive);
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if (match) {
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if (prefs.convert) {
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state.mainstay.tracer.value(state, 'valids', value, match.value);
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value = match.value;
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}
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state.mainstay.tracer.filter(schema, state, 'valid', match);
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return internals.finalize(value, null, helpers);
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}
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if (schema._flags.only) {
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const report = schema.$_createError('any.only', value, { valids: schema._valids.values({ display: true }) }, state, prefs);
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if (prefs.abortEarly) {
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return internals.finalize(value, [report], helpers);
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}
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errors.push(report);
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}
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}
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// Denied values
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if (schema._invalids) {
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|
|
const match = schema._invalids.get(value, state, prefs, schema._flags.insensitive);
|
||
|
|
if (match) {
|
||
|
|
state.mainstay.tracer.filter(schema, state, 'invalid', match);
|
||
|
|
const report = schema.$_createError('any.invalid', value, { invalids: schema._invalids.values({ display: true }) }, state, prefs);
|
||
|
|
if (prefs.abortEarly) {
|
||
|
|
return internals.finalize(value, [report], helpers);
|
||
|
|
}
|
||
|
|
|
||
|
|
errors.push(report);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Base type
|
||
|
|
|
||
|
|
if (def.validate) {
|
||
|
|
const base = def.validate(value, helpers);
|
||
|
|
if (base) {
|
||
|
|
state.mainstay.tracer.value(state, 'base', value, base.value);
|
||
|
|
value = base.value;
|
||
|
|
|
||
|
|
if (base.errors) {
|
||
|
|
if (!Array.isArray(base.errors)) {
|
||
|
|
errors.push(base.errors);
|
||
|
|
return internals.finalize(value, errors, helpers); // Base error always aborts early
|
||
|
|
}
|
||
|
|
|
||
|
|
if (base.errors.length) {
|
||
|
|
errors.push(...base.errors);
|
||
|
|
return internals.finalize(value, errors, helpers); // Base error always aborts early
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Validate tests
|
||
|
|
|
||
|
|
if (!schema._rules.length) {
|
||
|
|
return internals.finalize(value, errors, helpers);
|
||
|
|
}
|
||
|
|
|
||
|
|
return internals.rules(value, errors, helpers);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.rules = function (value, errors, helpers) {
|
||
|
|
|
||
|
|
const { schema, state, prefs } = helpers;
|
||
|
|
|
||
|
|
for (const rule of schema._rules) {
|
||
|
|
const definition = schema._definition.rules[rule.method];
|
||
|
|
|
||
|
|
// Skip rules that are also applied in coerce step
|
||
|
|
|
||
|
|
if (definition.convert &&
|
||
|
|
prefs.convert) {
|
||
|
|
|
||
|
|
state.mainstay.tracer.log(schema, state, 'rule', rule.name, 'full');
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Resolve references
|
||
|
|
|
||
|
|
let ret;
|
||
|
|
let args = rule.args;
|
||
|
|
if (rule._resolve.length) {
|
||
|
|
args = Object.assign({}, args); // Shallow copy
|
||
|
|
for (const key of rule._resolve) {
|
||
|
|
const resolver = definition.argsByName.get(key);
|
||
|
|
|
||
|
|
const resolved = args[key].resolve(value, state, prefs);
|
||
|
|
const normalized = resolver.normalize ? resolver.normalize(resolved) : resolved;
|
||
|
|
|
||
|
|
const invalid = Common.validateArg(normalized, null, resolver);
|
||
|
|
if (invalid) {
|
||
|
|
ret = schema.$_createError('any.ref', resolved, { arg: key, ref: args[key], reason: invalid }, state, prefs);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
args[key] = normalized;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Test rule
|
||
|
|
|
||
|
|
ret = ret || definition.validate(value, helpers, args, rule); // Use ret if already set to reference error
|
||
|
|
|
||
|
|
const result = internals.rule(ret, rule);
|
||
|
|
if (result.errors) {
|
||
|
|
state.mainstay.tracer.log(schema, state, 'rule', rule.name, 'error');
|
||
|
|
|
||
|
|
if (rule.warn) {
|
||
|
|
state.mainstay.warnings.push(...result.errors);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (prefs.abortEarly) {
|
||
|
|
return internals.finalize(value, result.errors, helpers);
|
||
|
|
}
|
||
|
|
|
||
|
|
errors.push(...result.errors);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
state.mainstay.tracer.log(schema, state, 'rule', rule.name, 'pass');
|
||
|
|
state.mainstay.tracer.value(state, 'rule', value, result.value, rule.name);
|
||
|
|
value = result.value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return internals.finalize(value, errors, helpers);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.rule = function (ret, rule) {
|
||
|
|
|
||
|
|
if (ret instanceof Errors.Report) {
|
||
|
|
internals.error(ret, rule);
|
||
|
|
return { errors: [ret], value: null };
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Array.isArray(ret) &&
|
||
|
|
ret[Common.symbols.errors]) {
|
||
|
|
|
||
|
|
ret.forEach((report) => internals.error(report, rule));
|
||
|
|
return { errors: ret, value: null };
|
||
|
|
}
|
||
|
|
|
||
|
|
return { errors: null, value: ret };
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.error = function (report, rule) {
|
||
|
|
|
||
|
|
if (rule.message) {
|
||
|
|
report._setTemplate(rule.message);
|
||
|
|
}
|
||
|
|
|
||
|
|
return report;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.finalize = function (value, errors, helpers) {
|
||
|
|
|
||
|
|
errors = errors || [];
|
||
|
|
const { schema, state, prefs } = helpers;
|
||
|
|
|
||
|
|
// Failover value
|
||
|
|
|
||
|
|
if (errors.length) {
|
||
|
|
const failover = internals.default('failover', undefined, errors, helpers);
|
||
|
|
if (failover !== undefined) {
|
||
|
|
state.mainstay.tracer.value(state, 'failover', value, failover);
|
||
|
|
value = failover;
|
||
|
|
errors = [];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Error override
|
||
|
|
|
||
|
|
if (errors.length &&
|
||
|
|
schema._flags.error) {
|
||
|
|
|
||
|
|
if (typeof schema._flags.error === 'function') {
|
||
|
|
errors = schema._flags.error(errors);
|
||
|
|
if (!Array.isArray(errors)) {
|
||
|
|
errors = [errors];
|
||
|
|
}
|
||
|
|
|
||
|
|
for (const error of errors) {
|
||
|
|
Assert(error instanceof Error || error instanceof Errors.Report, 'error() must return an Error object');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
errors = [schema._flags.error];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Default
|
||
|
|
|
||
|
|
if (value === undefined) {
|
||
|
|
const defaulted = internals.default('default', value, errors, helpers);
|
||
|
|
state.mainstay.tracer.value(state, 'default', value, defaulted);
|
||
|
|
value = defaulted;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Cast
|
||
|
|
|
||
|
|
if (schema._flags.cast &&
|
||
|
|
value !== undefined) {
|
||
|
|
|
||
|
|
const caster = schema._definition.cast[schema._flags.cast];
|
||
|
|
if (caster.from(value)) {
|
||
|
|
const casted = caster.to(value, helpers);
|
||
|
|
state.mainstay.tracer.value(state, 'cast', value, casted, schema._flags.cast);
|
||
|
|
value = casted;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Externals
|
||
|
|
|
||
|
|
if (schema.$_terms.externals &&
|
||
|
|
prefs.externals &&
|
||
|
|
prefs._externals !== false) { // Disabled for matching
|
||
|
|
|
||
|
|
for (const { method } of schema.$_terms.externals) {
|
||
|
|
state.mainstay.externals.push({ method, schema, state, label: Errors.label(schema._flags, state, prefs) });
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Result
|
||
|
|
|
||
|
|
const result = { value, errors: errors.length ? errors : null };
|
||
|
|
|
||
|
|
if (schema._flags.result) {
|
||
|
|
result.value = schema._flags.result === 'strip' ? undefined : /* raw */ helpers.original;
|
||
|
|
state.mainstay.tracer.value(state, schema._flags.result, value, result.value);
|
||
|
|
state.shadow(value, schema._flags.result);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Cache
|
||
|
|
|
||
|
|
if (schema._cache &&
|
||
|
|
prefs.cache !== false &&
|
||
|
|
!schema._refs.length) {
|
||
|
|
|
||
|
|
schema._cache.set(helpers.original, result);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Artifacts
|
||
|
|
|
||
|
|
if (value !== undefined &&
|
||
|
|
!result.errors &&
|
||
|
|
schema._flags.artifact !== undefined) {
|
||
|
|
|
||
|
|
state.mainstay.artifacts = state.mainstay.artifacts || new Map();
|
||
|
|
if (!state.mainstay.artifacts.has(schema._flags.artifact)) {
|
||
|
|
state.mainstay.artifacts.set(schema._flags.artifact, []);
|
||
|
|
}
|
||
|
|
|
||
|
|
state.mainstay.artifacts.get(schema._flags.artifact).push(state.path);
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.prefs = function (schema, prefs) {
|
||
|
|
|
||
|
|
const isDefaultOptions = prefs === Common.defaults;
|
||
|
|
if (isDefaultOptions &&
|
||
|
|
schema._preferences[Common.symbols.prefs]) {
|
||
|
|
|
||
|
|
return schema._preferences[Common.symbols.prefs];
|
||
|
|
}
|
||
|
|
|
||
|
|
prefs = Common.preferences(prefs, schema._preferences);
|
||
|
|
if (isDefaultOptions) {
|
||
|
|
schema._preferences[Common.symbols.prefs] = prefs;
|
||
|
|
}
|
||
|
|
|
||
|
|
return prefs;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.default = function (flag, value, errors, helpers) {
|
||
|
|
|
||
|
|
const { schema, state, prefs } = helpers;
|
||
|
|
const source = schema._flags[flag];
|
||
|
|
if (prefs.noDefaults ||
|
||
|
|
source === undefined) {
|
||
|
|
|
||
|
|
return value;
|
||
|
|
}
|
||
|
|
|
||
|
|
state.mainstay.tracer.log(schema, state, 'rule', flag, 'full');
|
||
|
|
|
||
|
|
if (!source) {
|
||
|
|
return source;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof source === 'function') {
|
||
|
|
const args = source.length ? [Clone(state.ancestors[0]), helpers] : [];
|
||
|
|
|
||
|
|
try {
|
||
|
|
return source(...args);
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
errors.push(schema.$_createError(`any.${flag}`, null, { error: err }, state, prefs));
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof source !== 'object') {
|
||
|
|
return source;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (source[Common.symbols.literal]) {
|
||
|
|
return source.literal;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Common.isResolvable(source)) {
|
||
|
|
return source.resolve(value, state, prefs);
|
||
|
|
}
|
||
|
|
|
||
|
|
return Clone(source);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.trim = function (value, schema) {
|
||
|
|
|
||
|
|
if (typeof value !== 'string') {
|
||
|
|
return value;
|
||
|
|
}
|
||
|
|
|
||
|
|
const trim = schema.$_getRule('trim');
|
||
|
|
if (!trim ||
|
||
|
|
!trim.args.enabled) {
|
||
|
|
|
||
|
|
return value;
|
||
|
|
}
|
||
|
|
|
||
|
|
return value.trim();
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.ignore = {
|
||
|
|
active: false,
|
||
|
|
debug: Ignore,
|
||
|
|
entry: Ignore,
|
||
|
|
filter: Ignore,
|
||
|
|
log: Ignore,
|
||
|
|
resolve: Ignore,
|
||
|
|
value: Ignore
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
internals.errorsArray = function () {
|
||
|
|
|
||
|
|
const errors = [];
|
||
|
|
errors[Common.symbols.errors] = true;
|
||
|
|
return errors;
|
||
|
|
};
|