| import { devAssert } from '../jsutils/devAssert.mjs'; |
| import { inspect } from '../jsutils/inspect.mjs'; |
| import { instanceOf } from '../jsutils/instanceOf.mjs'; |
| |
| /** |
| * A representation of source input to GraphQL. The `name` and `locationOffset` parameters are |
| * optional, but they are useful for clients who store GraphQL documents in source files. |
| * For example, if the GraphQL input starts at line 40 in a file named `Foo.graphql`, it might |
| * be useful for `name` to be `"Foo.graphql"` and location to be `{ line: 40, column: 1 }`. |
| * The `line` and `column` properties in `locationOffset` are 1-indexed. |
| */ |
| export class Source { |
| constructor( |
| body, |
| name = 'GraphQL request', |
| locationOffset = { |
| line: 1, |
| column: 1, |
| }, |
| ) { |
| typeof body === 'string' || |
| devAssert(false, `Body must be a string. Received: ${inspect(body)}.`); |
| this.body = body; |
| this.name = name; |
| this.locationOffset = locationOffset; |
| this.locationOffset.line > 0 || |
| devAssert( |
| false, |
| 'line in locationOffset is 1-indexed and must be positive.', |
| ); |
| this.locationOffset.column > 0 || |
| devAssert( |
| false, |
| 'column in locationOffset is 1-indexed and must be positive.', |
| ); |
| } |
| |
| get [Symbol.toStringTag]() { |
| return 'Source'; |
| } |
| } |
| /** |
| * Test if the given value is a Source object. |
| * |
| * @internal |
| */ |
| |
| export function isSource(source) { |
| return instanceOf(source, Source); |
| } |