node_modules.graphql.utilities.astFromValue.js Maven / Gradle / Ivy
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Maven plugin for generating graphql clients
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; /**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* strict
*/
exports.astFromValue = astFromValue;
var _iterall = require('iterall');
var _isNullish = require('../jsutils/isNullish');
var _isNullish2 = _interopRequireDefault(_isNullish);
var _isInvalid = require('../jsutils/isInvalid');
var _isInvalid2 = _interopRequireDefault(_isInvalid);
var _objectValues = require('../jsutils/objectValues');
var _objectValues2 = _interopRequireDefault(_objectValues);
var _kinds = require('../language/kinds');
var _definition = require('../type/definition');
var _scalars = require('../type/scalars');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Produces a GraphQL Value AST given a JavaScript value.
*
* A GraphQL type must be provided, which will be used to interpret different
* JavaScript values.
*
* | JSON Value | GraphQL Value |
* | ------------- | -------------------- |
* | Object | Input Object |
* | Array | List |
* | Boolean | Boolean |
* | String | String / Enum Value |
* | Number | Int / Float |
* | Mixed | Enum Value |
* | null | NullValue |
*
*/
function astFromValue(value, type) {
if ((0, _definition.isNonNullType)(type)) {
var astValue = astFromValue(value, type.ofType);
if (astValue && astValue.kind === _kinds.Kind.NULL) {
return null;
}
return astValue;
}
// only explicit null, not undefined, NaN
if (value === null) {
return { kind: _kinds.Kind.NULL };
}
// undefined, NaN
if ((0, _isInvalid2.default)(value)) {
return null;
}
// Convert JavaScript array to GraphQL list. If the GraphQLType is a list, but
// the value is not an array, convert the value using the list's item type.
if ((0, _definition.isListType)(type)) {
var itemType = type.ofType;
if ((0, _iterall.isCollection)(value)) {
var valuesNodes = [];
(0, _iterall.forEach)(value, function (item) {
var itemNode = astFromValue(item, itemType);
if (itemNode) {
valuesNodes.push(itemNode);
}
});
return { kind: _kinds.Kind.LIST, values: valuesNodes };
}
return astFromValue(value, itemType);
}
// Populate the fields of the input object by creating ASTs from each value
// in the JavaScript object according to the fields in the input type.
if ((0, _definition.isInputObjectType)(type)) {
if (value === null || (typeof value === 'undefined' ? 'undefined' : _typeof(value)) !== 'object') {
return null;
}
var fields = (0, _objectValues2.default)(type.getFields());
var fieldNodes = [];
fields.forEach(function (field) {
var fieldValue = astFromValue(value[field.name], field.type);
if (fieldValue) {
fieldNodes.push({
kind: _kinds.Kind.OBJECT_FIELD,
name: { kind: _kinds.Kind.NAME, value: field.name },
value: fieldValue
});
}
});
return { kind: _kinds.Kind.OBJECT, fields: fieldNodes };
}
if ((0, _definition.isScalarType)(type) || (0, _definition.isEnumType)(type)) {
// Since value is an internally represented value, it must be serialized
// to an externally represented value before converting into an AST.
var serialized = type.serialize(value);
if ((0, _isNullish2.default)(serialized)) {
return null;
}
// Others serialize based on their corresponding JavaScript scalar types.
if (typeof serialized === 'boolean') {
return { kind: _kinds.Kind.BOOLEAN, value: serialized };
}
// JavaScript numbers can be Int or Float values.
if (typeof serialized === 'number') {
var stringNum = String(serialized);
return integerStringRegExp.test(stringNum) ? { kind: _kinds.Kind.INT, value: stringNum } : { kind: _kinds.Kind.FLOAT, value: stringNum };
}
if (typeof serialized === 'string') {
// Enum types use Enum literals.
if ((0, _definition.isEnumType)(type)) {
return { kind: _kinds.Kind.ENUM, value: serialized };
}
// ID types can use Int literals.
if (type === _scalars.GraphQLID && integerStringRegExp.test(serialized)) {
return { kind: _kinds.Kind.INT, value: serialized };
}
return {
kind: _kinds.Kind.STRING,
value: serialized
};
}
throw new TypeError('Cannot convert value to AST: ' + String(serialized));
}
/* istanbul ignore next */
throw new Error('Unknown type: ' + type + '.');
}
/**
* IntValue:
* - NegativeSign? 0
* - NegativeSign? NonZeroDigit ( Digit+ )?
*/
var integerStringRegExp = /^-?(0|[1-9][0-9]*)$/;
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