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binding_web: Add Query.didExceedMatchLimit

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This lets wasm clients check whether a query exceeded its maximum number
of in-progress matches.
This commit is contained in:
Douglas Creager 2021-04-27 09:21:38 -04:00
parent b5ec720696
commit e8eb3c5d5a
4 changed files with 32 additions and 0 deletions
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20
lib/binding_web/test/query-test.js
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@ -238,6 +238,26 @@ describe("Query", () => {
refutedProperties: { bar: "baz" },
},
]);
assert.ok(!query.didExceedMatchLimit());
});
it("detects queries with too many permutations to track", () => {
tree = parser.parse(`
[
hello, hello, hello, hello, hello, hello, hello, hello, hello, hello,
hello, hello, hello, hello, hello, hello, hello, hello, hello, hello,
hello, hello, hello, hello, hello, hello, hello, hello, hello, hello,
hello, hello, hello, hello, hello, hello, hello, hello, hello, hello,
hello, hello, hello, hello, hello, hello, hello, hello, hello, hello,
];
`);
query = JavaScript.query(`
(array (identifier) @pre (identifier) @post)
`);
const captures = query.captures(tree.rootNode);
assert.ok(query.didExceedMatchLimit());
});
});