| 1 | import { inspect } from 'cross-inspect';
|
| 2 | import { isEnumType, isInputObjectType, isLeafType, isListType, isNonNullType, Kind, } from 'graphql';
|
| 3 | import { astFromValueUntyped } from './astFromValueUntyped.js';
|
| 4 | import { isIterableObject, isObjectLike } from './jsutils.js';
|
| 5 | /**
|
| 6 | * Produces a GraphQL Value AST given a JavaScript object.
|
| 7 | * Function will match JavaScript/JSON values to GraphQL AST schema format
|
| 8 | * by using suggested GraphQLInputType. For example:
|
| 9 | *
|
| 10 | * astFromValue("value", GraphQLString)
|
| 11 | *
|
| 12 | * A GraphQL type must be provided, which will be used to interpret different
|
| 13 | * JavaScript values.
|
| 14 | *
|
| 15 | * | JSON Value | GraphQL Value |
|
| 16 | * | ------------- | -------------------- |
|
| 17 | * | Object | Input Object |
|
| 18 | * | Array | List |
|
| 19 | * | Boolean | Boolean |
|
| 20 | * | String | String / Enum Value |
|
| 21 | * | Number | Int / Float |
|
| 22 | * | BigInt | Int |
|
| 23 | * | Unknown | Enum Value |
|
| 24 | * | null | NullValue |
|
| 25 | *
|
| 26 | */
|
| 27 | export function astFromValue(value, type) {
|
| 28 | if (isNonNullType(type)) {
|
| 29 | const astValue = astFromValue(value, type.ofType);
|
| 30 | if (astValue?.kind === Kind.NULL) {
|
| 31 | return null;
|
| 32 | }
|
| 33 | return astValue;
|
| 34 | }
|
| 35 | // only explicit null, not undefined, NaN
|
| 36 | if (value === null) {
|
| 37 | return { kind: Kind.NULL };
|
| 38 | }
|
| 39 | // undefined
|
| 40 | if (value === undefined) {
|
| 41 | return null;
|
| 42 | }
|
| 43 | // Convert JavaScript array to GraphQL list. If the GraphQLType is a list, but
|
| 44 | // the value is not an array, convert the value using the list's item type.
|
| 45 | if (isListType(type)) {
|
| 46 | const itemType = type.ofType;
|
| 47 | if (isIterableObject(value)) {
|
| 48 | const valuesNodes = [];
|
| 49 | for (const item of value) {
|
| 50 | const itemNode = astFromValue(item, itemType);
|
| 51 | if (itemNode != null) {
|
| 52 | valuesNodes.push(itemNode);
|
| 53 | }
|
| 54 | }
|
| 55 | return { kind: Kind.LIST, values: valuesNodes };
|
| 56 | }
|
| 57 | return astFromValue(value, itemType);
|
| 58 | }
|
| 59 | // Populate the fields of the input object by creating ASTs from each value
|
| 60 | // in the JavaScript object according to the fields in the input type.
|
| 61 | if (isInputObjectType(type)) {
|
| 62 | if (!isObjectLike(value)) {
|
| 63 | return null;
|
| 64 | }
|
| 65 | const fieldNodes = [];
|
| 66 | for (const field of Object.values(type.getFields())) {
|
| 67 | const fieldValue = astFromValue(value[field.name], field.type);
|
| 68 | if (fieldValue) {
|
| 69 | fieldNodes.push({
|
| 70 | kind: Kind.OBJECT_FIELD,
|
| 71 | name: { kind: Kind.NAME, value: field.name },
|
| 72 | value: fieldValue,
|
| 73 | });
|
| 74 | }
|
| 75 | }
|
| 76 | return { kind: Kind.OBJECT, fields: fieldNodes };
|
| 77 | }
|
| 78 | if (isLeafType(type)) {
|
| 79 | // Since value is an internally represented value, it must be serialized
|
| 80 | // to an externally represented value before converting into an AST.
|
| 81 | const serialized = type.serialize(value);
|
| 82 | if (serialized == null) {
|
| 83 | return null;
|
| 84 | }
|
| 85 | if (isEnumType(type)) {
|
| 86 | return { kind: Kind.ENUM, value: serialized };
|
| 87 | }
|
| 88 | // ID types can use Int literals.
|
| 89 | if (type.name === 'ID' &&
|
| 90 | typeof serialized === 'string' &&
|
| 91 | integerStringRegExp.test(serialized)) {
|
| 92 | return { kind: Kind.INT, value: serialized };
|
| 93 | }
|
| 94 | return astFromValueUntyped(serialized);
|
| 95 | }
|
| 96 | /* c8 ignore next 3 */
|
| 97 | // Not reachable, all possible types have been considered.
|
| 98 | console.assert(false, 'Unexpected input type: ' + inspect(type));
|
| 99 | }
|
| 100 | /**
|
| 101 | * IntValue:
|
| 102 | * - NegativeSign? 0
|
| 103 | * - NegativeSign? NonZeroDigit ( Digit+ )?
|
| 104 | */
|
| 105 | const integerStringRegExp = /^-?(?:0|[1-9][0-9]*)$/;
|