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80 lines
2.2 KiB

4 years ago
'use strict';
var util = require('./_util');
module.exports = function defFunc(ajv) {
if (!ajv._opts.$data) {
console.warn('keyword select requires $data option');
return ajv;
}
var metaSchemaRef = util.metaSchemaRef(ajv);
var compiledCaseSchemas = [];
defFunc.definition = {
validate: function v(schema, data, parentSchema) {
if (parentSchema.selectCases === undefined)
throw new Error('keyword "selectCases" is absent');
var compiled = getCompiledSchemas(parentSchema, false);
var validate = compiled.cases[schema];
if (validate === undefined) validate = compiled.default;
if (typeof validate == 'boolean') return validate;
var valid = validate(data);
if (!valid) v.errors = validate.errors;
return valid;
},
$data: true,
metaSchema: { type: ['string', 'number', 'boolean', 'null'] }
};
ajv.addKeyword('select', defFunc.definition);
ajv.addKeyword('selectCases', {
compile: function (schemas, parentSchema) {
var compiled = getCompiledSchemas(parentSchema);
for (var value in schemas)
compiled.cases[value] = compileOrBoolean(schemas[value]);
return function() { return true; };
},
valid: true,
metaSchema: {
type: 'object',
additionalProperties: metaSchemaRef
}
});
ajv.addKeyword('selectDefault', {
compile: function (schema, parentSchema) {
var compiled = getCompiledSchemas(parentSchema);
compiled.default = compileOrBoolean(schema);
return function() { return true; };
},
valid: true,
metaSchema: metaSchemaRef
});
return ajv;
function getCompiledSchemas(parentSchema, create) {
var compiled;
compiledCaseSchemas.some(function (c) {
if (c.parentSchema === parentSchema) {
compiled = c;
return true;
}
});
if (!compiled && create !== false) {
compiled = {
parentSchema: parentSchema,
cases: {},
default: true
};
compiledCaseSchemas.push(compiled);
}
return compiled;
}
function compileOrBoolean(schema) {
return typeof schema == 'boolean'
? schema
: ajv.compile(schema);
}
};