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- import { Kind, parse, Source as GraphQLSource, visit, isTypeSystemDefinitionNode, print, } from 'graphql';
- import { dedentBlockStringValue, getLeadingCommentBlock } from './comments.js';
- export function parseGraphQLSDL(location, rawSDL, options = {}) {
- let document;
- try {
- if (options.commentDescriptions && rawSDL.includes('#')) {
- document = transformCommentsToDescriptions(rawSDL, options);
- // If noLocation=true, we need to make sure to print and parse it again, to remove locations,
- // since `transformCommentsToDescriptions` must have locations set in order to transform the comments
- // into descriptions.
- if (options.noLocation) {
- document = parse(print(document), options);
- }
- }
- else {
- document = parse(new GraphQLSource(rawSDL, location), options);
- }
- }
- catch (e) {
- if (e.message.includes('EOF') && rawSDL.replace(/(\#[^*]*)/g, '').trim() === '') {
- document = {
- kind: Kind.DOCUMENT,
- definitions: [],
- };
- }
- else {
- throw e;
- }
- }
- return {
- location,
- document,
- };
- }
- export function transformCommentsToDescriptions(sourceSdl, options = {}) {
- const parsedDoc = parse(sourceSdl, {
- ...options,
- noLocation: false,
- });
- const modifiedDoc = visit(parsedDoc, {
- leave: (node) => {
- if (isDescribable(node)) {
- const rawValue = getLeadingCommentBlock(node);
- if (rawValue !== undefined) {
- const commentsBlock = dedentBlockStringValue('\n' + rawValue);
- const isBlock = commentsBlock.includes('\n');
- if (!node.description) {
- return {
- ...node,
- description: {
- kind: Kind.STRING,
- value: commentsBlock,
- block: isBlock,
- },
- };
- }
- else {
- return {
- ...node,
- description: {
- ...node.description,
- value: node.description.value + '\n' + commentsBlock,
- block: true,
- },
- };
- }
- }
- }
- },
- });
- return modifiedDoc;
- }
- export function isDescribable(node) {
- return (isTypeSystemDefinitionNode(node) ||
- node.kind === Kind.FIELD_DEFINITION ||
- node.kind === Kind.INPUT_VALUE_DEFINITION ||
- node.kind === Kind.ENUM_VALUE_DEFINITION);
- }
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