File: lexical-structure.html

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<!DOCTYPE html>
<link rel="help" href="https://www.w3.org/TR/1999/REC-xpath-19991116/#exprlex">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
function parse(expression) {
  document.evaluate(expression, document, null, XPathResult.ANY_TYPE, null);
}

// https://www.w3.org/TR/1999/REC-xpath-19991116/#NT-Literal
test(() => {
  parse(' \'a"bc\' ');
  parse(' "a\'bc" ');

  assert_throws_dom('SyntaxError', () => { parse(' \u2019xyz\u2019 '); });
}, 'Literal: Only \' and " should be handled as literal quotes.');

// https://www.w3.org/TR/1999/REC-xpath-19991116/#NT-ExprWhitespace
test(() => {
  parse(' \t\r\n.\r\n\t ');

  assert_throws_dom('SyntaxError', () => { parse('\x0B\x0C .'); });
  assert_throws_dom('SyntaxError', () => { parse('\x0E\x0F .'); });
  assert_throws_dom('SyntaxError', () => { parse('\u3000 .'); });
  assert_throws_dom('SyntaxError', () => { parse('\u2029 .'); });
}, 'ExprWhitespace: Only #x20 #x9 #xD or #xA must be handled as a whitespace.');
</script>
</body>