hints.js
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"use strict";
const Range = require('./Range');
/** @typedef {import("../validate").Schema} Schema */
/**
* @param {Schema} schema
* @param {boolean} logic
* @return {string[]}
*/
module.exports.stringHints = function stringHints(schema, logic) {
const hints = [];
let type = 'string';
const currentSchema = { ...schema
};
if (!logic) {
const tmpLength = currentSchema.minLength;
const tmpFormat = currentSchema.formatMinimum;
const tmpExclusive = currentSchema.formatExclusiveMaximum;
currentSchema.minLength = currentSchema.maxLength;
currentSchema.maxLength = tmpLength;
currentSchema.formatMinimum = currentSchema.formatMaximum;
currentSchema.formatMaximum = tmpFormat;
currentSchema.formatExclusiveMaximum = !currentSchema.formatExclusiveMinimum;
currentSchema.formatExclusiveMinimum = !tmpExclusive;
}
if (typeof currentSchema.minLength === 'number') {
if (currentSchema.minLength === 1) {
type = 'non-empty string';
} else {
const length = Math.max(currentSchema.minLength - 1, 0);
hints.push(`should be longer than ${length} character${length > 1 ? 's' : ''}`);
}
}
if (typeof currentSchema.maxLength === 'number') {
if (currentSchema.maxLength === 0) {
type = 'empty string';
} else {
const length = currentSchema.maxLength + 1;
hints.push(`should be shorter than ${length} character${length > 1 ? 's' : ''}`);
}
}
if (currentSchema.pattern) {
hints.push(`should${logic ? '' : ' not'} match pattern ${JSON.stringify(currentSchema.pattern)}`);
}
if (currentSchema.format) {
hints.push(`should${logic ? '' : ' not'} match format ${JSON.stringify(currentSchema.format)}`);
}
if (currentSchema.formatMinimum) {
hints.push(`should be ${currentSchema.formatExclusiveMinimum ? '>' : '>='} ${JSON.stringify(currentSchema.formatMinimum)}`);
}
if (currentSchema.formatMaximum) {
hints.push(`should be ${currentSchema.formatExclusiveMaximum ? '<' : '<='} ${JSON.stringify(currentSchema.formatMaximum)}`);
}
return [type].concat(hints);
};
/**
* @param {Schema} schema
* @param {boolean} logic
* @return {string[]}
*/
module.exports.numberHints = function numberHints(schema, logic) {
const hints = [schema.type === 'integer' ? 'integer' : 'number'];
const range = new Range();
if (typeof schema.minimum === 'number') {
range.left(schema.minimum);
}
if (typeof schema.exclusiveMinimum === 'number') {
range.left(schema.exclusiveMinimum, true);
}
if (typeof schema.maximum === 'number') {
range.right(schema.maximum);
}
if (typeof schema.exclusiveMaximum === 'number') {
range.right(schema.exclusiveMaximum, true);
}
const rangeFormat = range.format(logic);
if (rangeFormat) {
hints.push(rangeFormat);
}
if (typeof schema.multipleOf === 'number') {
hints.push(`should${logic ? '' : ' not'} be multiple of ${schema.multipleOf}`);
}
return hints;
};