62 lines
2.1 KiB
JavaScript
62 lines
2.1 KiB
JavaScript
import { GraphQLError } from '../../error/GraphQLError';
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import { Kind } from '../../language/kinds';
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import { specifiedDirectives } from '../../type/directives';
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export function duplicateDirectiveMessage(directiveName) {
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return "The directive \"".concat(directiveName, "\" can only be used once at this location.");
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}
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/**
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* Unique directive names per location
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*
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* A GraphQL document is only valid if all non-repeatable directives at
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* a given location are uniquely named.
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*/
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export function UniqueDirectivesPerLocation(context) {
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var uniqueDirectiveMap = Object.create(null);
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var schema = context.getSchema();
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var definedDirectives = schema ? schema.getDirectives() : specifiedDirectives;
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for (var _i2 = 0; _i2 < definedDirectives.length; _i2++) {
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var directive = definedDirectives[_i2];
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uniqueDirectiveMap[directive.name] = !directive.isRepeatable;
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}
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var astDefinitions = context.getDocument().definitions;
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for (var _i4 = 0; _i4 < astDefinitions.length; _i4++) {
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var def = astDefinitions[_i4];
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if (def.kind === Kind.DIRECTIVE_DEFINITION) {
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uniqueDirectiveMap[def.name.value] = !def.repeatable;
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}
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}
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return {
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// Many different AST nodes may contain directives. Rather than listing
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// them all, just listen for entering any node, and check to see if it
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// defines any directives.
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enter: function enter(node) {
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// Flow can't refine that node.directives will only contain directives,
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// so we cast so the rest of the code is well typed.
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var directives = node.directives;
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if (directives) {
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var knownDirectives = Object.create(null);
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for (var _i6 = 0; _i6 < directives.length; _i6++) {
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var _directive = directives[_i6];
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var directiveName = _directive.name.value;
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if (uniqueDirectiveMap[directiveName]) {
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if (knownDirectives[directiveName]) {
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context.reportError(new GraphQLError(duplicateDirectiveMessage(directiveName), [knownDirectives[directiveName], _directive]));
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} else {
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knownDirectives[directiveName] = _directive;
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}
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}
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}
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}
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}
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};
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}
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