mirror of
https://github.com/RGBCube/serenity
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a2efecac03
Previously we were unable to parse code like `yield/2` because `/2` was parsed as a regex. At the same time `for (a in / b/)` was parsed as a division. This is solved by defaulting to division in the lexer, but calling `force_slash_as_regex()` from the parser whenever an IdentifierName is parsed as a ReservedWord.
48 lines
1.6 KiB
JavaScript
48 lines
1.6 KiB
JavaScript
test("slash token resolution in lexer", () => {
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expect(`{ blah.blah; }\n/foo/`).toEval();
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expect("``/foo/").not.toEval();
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expect("1/foo/").not.toEval();
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expect("1/foo").toEval();
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expect("{} /foo/").toEval();
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expect("{} /=/").toEval();
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expect("{} /=a/").toEval();
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expect("{} /* */ /=a/").toEval();
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expect("{} /* /a/ */ /=a/").toEval();
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expect("(function () {} / 1)").toEval();
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expect("(function () {} / 1)").toEval();
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expect("+a++ / 1").toEval();
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expect("+a-- / 1").toEval();
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expect("a.in / b").toEval();
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expect("a.instanceof / b").toEval();
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expect("class A { #name; d = a.#name / b; }").toEval();
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expect("async / b").toEval();
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expect("a.delete / b").toEval();
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expect("delete / b/").toEval();
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expect("a.in / b").toEval();
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expect("for (a in / b/) {}").toEval();
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expect("a.instanceof / b").toEval();
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expect("a instanceof / b/").toEval();
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expect("new / b/").toEval();
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expect("null / b").toEval();
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expect("for (a of / b/) {}").toEval();
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expect("a.return / b").toEval();
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expect("function foo() { return / b/ }").toEval();
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expect("throw / b/").toEval();
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expect("a.typeof / b").toEval();
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expect("a.void / b").toEval();
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expect("void / b/").toEval();
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expect("await / b").toEval();
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expect("await / b/").not.toEval();
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expect("async function foo() { await / b }").not.toEval();
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expect("async function foo() { await / b/ }").toEval();
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expect("yield / b").toEval();
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expect("yield / b/").not.toEval();
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expect("function* foo() { yield / b }").not.toEval();
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expect("function* foo() { yield / b/ }").toEval();
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});
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