| import { inspect } from '../jsutils/inspect.mjs'; |
| import { invariant } from '../jsutils/invariant.mjs'; |
| import { isIterableObject } from '../jsutils/isIterableObject.mjs'; |
| import { isObjectLike } from '../jsutils/isObjectLike.mjs'; |
| import { Kind } from '../language/kinds.mjs'; |
| import { |
| isEnumType, |
| isInputObjectType, |
| isLeafType, |
| isListType, |
| isNonNullType, |
| } from '../type/definition.mjs'; |
| import { GraphQLID } from '../type/scalars.mjs'; |
| /** |
| * Produces a GraphQL Value AST given a JavaScript object. |
| * Function will match JavaScript/JSON values to GraphQL AST schema format |
| * by using suggested GraphQLInputType. For example: |
| * |
| * astFromValue("value", GraphQLString) |
| * |
| * 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 | |
| * | Unknown | Enum Value | |
| * | null | NullValue | |
| * |
| */ |
| |
| export function astFromValue(value, type) { |
| if (isNonNullType(type)) { |
| const astValue = astFromValue(value, type.ofType); |
| |
| if ( |
| (astValue === null || astValue === void 0 ? void 0 : astValue.kind) === |
| Kind.NULL |
| ) { |
| return null; |
| } |
| |
| return astValue; |
| } // only explicit null, not undefined, NaN |
| |
| if (value === null) { |
| return { |
| kind: Kind.NULL, |
| }; |
| } // undefined |
| |
| if (value === undefined) { |
| 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 (isListType(type)) { |
| const itemType = type.ofType; |
| |
| if (isIterableObject(value)) { |
| const valuesNodes = []; |
| |
| for (const item of value) { |
| const itemNode = astFromValue(item, itemType); |
| |
| if (itemNode != null) { |
| valuesNodes.push(itemNode); |
| } |
| } |
| |
| return { |
| kind: 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 (isInputObjectType(type)) { |
| if (!isObjectLike(value)) { |
| return null; |
| } |
| |
| const fieldNodes = []; |
| |
| for (const field of Object.values(type.getFields())) { |
| const fieldValue = astFromValue(value[field.name], field.type); |
| |
| if (fieldValue) { |
| fieldNodes.push({ |
| kind: Kind.OBJECT_FIELD, |
| name: { |
| kind: Kind.NAME, |
| value: field.name, |
| }, |
| value: fieldValue, |
| }); |
| } |
| } |
| |
| return { |
| kind: Kind.OBJECT, |
| fields: fieldNodes, |
| }; |
| } |
| |
| if (isLeafType(type)) { |
| // Since value is an internally represented value, it must be serialized |
| // to an externally represented value before converting into an AST. |
| const serialized = type.serialize(value); |
| |
| if (serialized == null) { |
| return null; |
| } // Others serialize based on their corresponding JavaScript scalar types. |
| |
| if (typeof serialized === 'boolean') { |
| return { |
| kind: Kind.BOOLEAN, |
| value: serialized, |
| }; |
| } // JavaScript numbers can be Int or Float values. |
| |
| if (typeof serialized === 'number' && Number.isFinite(serialized)) { |
| const stringNum = String(serialized); |
| return integerStringRegExp.test(stringNum) |
| ? { |
| kind: Kind.INT, |
| value: stringNum, |
| } |
| : { |
| kind: Kind.FLOAT, |
| value: stringNum, |
| }; |
| } |
| |
| if (typeof serialized === 'string') { |
| // Enum types use Enum literals. |
| if (isEnumType(type)) { |
| return { |
| kind: Kind.ENUM, |
| value: serialized, |
| }; |
| } // ID types can use Int literals. |
| |
| if (type === GraphQLID && integerStringRegExp.test(serialized)) { |
| return { |
| kind: Kind.INT, |
| value: serialized, |
| }; |
| } |
| |
| return { |
| kind: Kind.STRING, |
| value: serialized, |
| }; |
| } |
| |
| throw new TypeError(`Cannot convert value to AST: ${inspect(serialized)}.`); |
| } |
| /* c8 ignore next 3 */ |
| // Not reachable, all possible types have been considered. |
| |
| false || invariant(false, 'Unexpected input type: ' + inspect(type)); |
| } |
| /** |
| * IntValue: |
| * - NegativeSign? 0 |
| * - NegativeSign? NonZeroDigit ( Digit+ )? |
| */ |
| |
| const integerStringRegExp = /^-?(?:0|[1-9][0-9]*)$/; |