53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
/**
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* strict-local
|
|
* @format
|
|
*/
|
|
'use strict';
|
|
|
|
var CompilerContext = require("./GraphQLCompilerContext");
|
|
|
|
var IRTransformer = require("./GraphQLIRTransformer");
|
|
|
|
var getNormalizationOperationName = require("./getNormalizationOperationName");
|
|
|
|
/**
|
|
* This transform finds MatchBranch nodes and adds a SplitOperation root
|
|
* node to the context for each of them.
|
|
*/
|
|
function relaySplitMatchTransform(context) {
|
|
var splitOperations = new Map();
|
|
var transformedContext = IRTransformer.transform(context, {
|
|
MatchBranch: visitMatchBranch
|
|
}, function () {
|
|
return splitOperations;
|
|
});
|
|
return transformedContext.addAll(Array.from(splitOperations.values()));
|
|
}
|
|
|
|
function visitMatchBranch(node, state) {
|
|
var transformedNode = this.traverse(node, state);
|
|
var splitOperation = {
|
|
kind: 'SplitOperation',
|
|
name: getNormalizationOperationName(transformedNode.name),
|
|
selections: transformedNode.selections,
|
|
loc: {
|
|
kind: 'Derived',
|
|
source: node.loc
|
|
},
|
|
metadata: {
|
|
derivedFrom: transformedNode.name
|
|
},
|
|
type: transformedNode.type
|
|
};
|
|
state.set(node.name, splitOperation);
|
|
return transformedNode;
|
|
}
|
|
|
|
module.exports = {
|
|
transform: relaySplitMatchTransform
|
|
}; |