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Urange Parsing #15195

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merged 6 commits into from
Feb 1, 2019
Merged

Urange Parsing #15195

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be6aae4
Urange Parsing
tabatkins Jan 31, 2019
794729a
Stabilize the starting value on "valid" tests
tabatkins Jan 31, 2019
c62259a
meta => link
tabatkins Feb 1, 2019
23a94e6
Fix selector serialization
tabatkins Feb 1, 2019
d976953
Force uppercase of the urange
tabatkins Feb 1, 2019
bdf1782
fix accidental collision
tabatkins Feb 1, 2019
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172 changes: 172 additions & 0 deletions css/css-syntax/urange-parsing.html
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Original file line number Diff line number Diff line change
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<!doctype html>
<title>Urange Parsing</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>

@font-face {
font-family: foo;
src: url(http://example.com);
}

.error {}

</style>

<meta name=author title="Tab Atkins-Bittner">
<meta rel=help href="https://drafts.csswg.org/css-syntax/#urange-syntax">

<script>

function testUrange(input, expected) {
test(()=>{
const rule = document.styleSheets[0].cssRules[0];
rule.style.unicodeRange = input;
assert_equals(rule.style.unicodeRange, expected);
}, `"${input}" => "${expected}"`)
}
function testInvalidUrange(input) {
test(()=>{
const rule = document.styleSheets[0].cssRules[0];
rule.style.unicodeRange = "U+1357";
rule.style.unicodeRange = input;
assert_equals(rule.style.unicodeRange, "U+1357");
}, `"${input}" is invalid`);
}

/* First exercise all the clauses individually */
//<urange> =
// u '+' <ident-token> '?'* |
/* comments can go between tokens */
testUrange("u/**/+/**/a/**/?", "U+A0-AF");
/* capitalization doesn't matter */
testUrange("u+abc", "U+ABC");
testUrange("U+abc", "U+ABC");
testUrange("u+ABC", "U+ABC");
testUrange("U+ABC", "U+ABC");
testUrange("u+AbC", "U+ABC");
/* only hex */
testInvalidUrange("u+efg");
/* no spacing */
testInvalidUrange("u +abc");
testInvalidUrange("u +abc");
testInvalidUrange("u + abc");
testInvalidUrange("U + a b c");
/* 1-6 characters */
testUrange("u+a", "U+A");
testUrange("u+aa", "U+AA");
testUrange("u+aaa", "U+AAA");
testUrange("u+aaaa", "U+AAAA");
testUrange("u+aaaaa", "U+AAAAA");
testInvalidUrange("u+aaaaaaa");
/* Or ? at the end, still up to 6 */
testUrange("u+a?", "U+A0-AF");
testUrange("u+a??", "U+A00-AFF");
testUrange("u+a???", "U+A000-AFFF");
testUrange("u+a????", "U+A0000-AFFFF");
testInvalidUrange("u+aaaaaa?");
testInvalidUrange("u+aaaaa??");
testInvalidUrange("u+aaaa???");
testInvalidUrange("u+aaa????");
testInvalidUrange("u+aa?????");
testInvalidUrange("u+a??????");
/* no characters after ? */
testInvalidUrange("u+a?a");
// Too large!
testInvalidUrange("u+aaaaaa");
testInvalidUrange("u+a?????");

// u <dimension-token> '?'* |
testUrange("u/**/+0a/**/?", "U+A0-AF");
testUrange("u+0a", "U+A");
testUrange("U+0a0", "U+A0");
testUrange("u+0aaaaa", "U+AAAAA");
testInvalidUrange("u+0aaaaaa");
testUrange("u+0a0000", "U+A0000");
testInvalidUrange("u+0a00000");
testInvalidUrange("u+0aaaaa0");
testUrange("u+00000a", "U+A");
testInvalidUrange("u+00000aa");
testInvalidUrange("u+00000a0")
testInvalidUrange("u+000000a");
testUrange("u+0a????", "U+A0000-AFFFF");
testInvalidUrange("u+0a?????");
testInvalidUrange("u+00a????");
// Too large!
testInvalidUrange("u+22222a");
// Scinot!
testUrange("u+1e9a", "U+1E9A");

// u <number-token> '?'* |
testUrange("u/**/+0/**/?", "U+0-F");
testInvalidUrange("u/**/0");
testUrange("u+0", "U+0");
testUrange("u+00", "U+0");
testUrange("u+000", "U+0");
testUrange("u+0000", "U+0");
testUrange("u+00000", "U+0");
testUrange("u+000000", "U+0");
testInvalidUrange("u+0000000");
testUrange("u+00000?", "U+0-F");
testUrange("u+0?????", "U+0-FFFFF");
testInvalidUrange("u+0?a");
testInvalidUrange("u+000000?");
testInvalidUrange("u+00000??");
testInvalidUrange("u+0??????");
// Scinot!
testUrange("u+1e3", "U+1E3");
testUrange("u+1e-20", "U+1E-20");
// Too large!
testInvalidUrange("u+222222");
testInvalidUrange("u+2?????");

// u <number-token> <dimension-token> |
testUrange("u/**/+0/**/-0a", "U+0-A");
testUrange("u+0-0a", "U+0-A");
testUrange("u+000000-0aaaaa", "U+0-AAAAA");
testInvalidUrange("u+0000000-0a");
testInvalidUrange("u+0-0aaaaaa");
testInvalidUrange("u+0-000000a");
testInvalidUrange("u+0+0a");
testInvalidUrange("u+0?-0a");
testInvalidUrange("u+0-0a?");
// Too large!
testInvalidUrange("u+222222-22222a");

// u <number-token> <number-token> |
testUrange("u/**/+0/**/-1", "U+0-1");
testUrange("u+0-1", "U+0-1");
testInvalidUrange("u-0-1");
testInvalidUrange("u-0+1");
testInvalidUrange("u+0+1");
testUrange("u+000000-000001", "U+0-1");
testInvalidUrange("u+0000000-1");
testInvalidUrange("u+0-0000001");
// Too large!
testInvalidUrange("u+0-222222");

// u '+' '?'+
testUrange("u/**/+/**/?", "U+0-F");
testUrange("u+?", "U+0-F");
testUrange("u+?????", "u+0-FFFFF");
testInvalidUrange("u+???????");
testInvalidUrange("u+?a");
// U+FFFFFF is too large!
testInvalidUrange("u+??????");


/* Finally, verify that u+a is properly parsed
as IDENT(u) DELIM(+) IDENT(a) in other contexts */

test(()=>{
const rule = document.styleSheets[0].cssRules[1];
// Establish that it works with whitespace...
rule.selectorText = "u + a";
assert_equals(rule.selectorText, "u + a");
// And then again without...
rule.selectorText = ".error";
rule.selectorText = "u+a";
assert_equals(rule.selectorText, "u+a");
}, "u+a is a valid selector");

</script>