Mirror: The small sibling of the graphql package, slimmed down for client-side libraries.
(chore) - Reduce size of visitor function (#8)
authored by
Phil Pluckthun
and committed by
GitHub
1a5ff4fa
bb9f6a9e
+11
-12
+11
-12
alias/language/visitor.mjs
+11
-12
alias/language/visitor.mjs
···
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const path = [];
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const ancestors = [];
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-
function callback(node, key, parent, isLeaving) {
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const visitFn = getVisitFn(visitor, node.kind, isLeaving);
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if (visitFn) {
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const result = visitFn.call(visitor, node, key, parent, path, ancestors);
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if (result === BREAK) throw BREAK;
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return result;
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}
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}
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-
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function traverse(node, key, parent) {
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let hasEdited = false;
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const resultEnter = callback(node, key, parent, false);
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const enter = getVisitFn(visitor, node.kind, false);
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const resultEnter =
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enter && enter.call(visitor, node, key, parent, path, ancestors);
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if (resultEnter === false) {
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return node;
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} else if (resultEnter === null) {
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return null;
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} else if (resultEnter === BREAK) {
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throw BREAK;
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} else if (resultEnter && typeof resultEnter.kind === 'string') {
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hasEdited = resultEnter !== node;
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node = resultEnter;
···
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}
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if (parent) ancestors.pop();
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const resultLeave = callback(node, key, parent, true);
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if (resultLeave !== undefined) {
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const leave = getVisitFn(visitor, node.kind, true);
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const resultLeave =
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leave && leave.call(visitor, node, key, parent, path, ancestors);
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if (resultLeave === BREAK) {
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throw BREAK;
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} else if (resultLeave !== undefined) {
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return resultLeave;
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} else if (resultEnter !== undefined) {
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return hasEdited ? copy : resultEnter;