42 lines
1.5 KiB
JavaScript
42 lines
1.5 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* strict
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*/
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import inspect from '../../jsutils/inspect';
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import { GraphQLError } from '../../error/GraphQLError';
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import { getNamedType, isLeafType } from '../../type/definition';
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export function noSubselectionAllowedMessage(fieldName, type) {
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return "Field \"".concat(fieldName, "\" must not have a selection since ") + "type \"".concat(type, "\" has no subfields.");
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}
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export function requiredSubselectionMessage(fieldName, type) {
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return "Field \"".concat(fieldName, "\" of type \"").concat(type, "\" must have a ") + "selection of subfields. Did you mean \"".concat(fieldName, " { ... }\"?");
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}
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/**
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* Scalar leafs
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*
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* A GraphQL document is valid only if all leaf fields (fields without
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* sub selections) are of scalar or enum types.
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*/
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export function ScalarLeafs(context) {
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return {
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Field: function Field(node) {
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var type = context.getType();
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var selectionSet = node.selectionSet;
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if (type) {
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if (isLeafType(getNamedType(type))) {
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if (selectionSet) {
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context.reportError(new GraphQLError(noSubselectionAllowedMessage(node.name.value, inspect(type)), [selectionSet]));
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}
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} else if (!selectionSet) {
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context.reportError(new GraphQLError(requiredSubselectionMessage(node.name.value, inspect(type)), [node]));
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}
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}
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}
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};
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} |