mirror of https://github.com/tc39/test262.git
72 lines
2.4 KiB
JavaScript
72 lines
2.4 KiB
JavaScript
// Copyright 2023 Ron Buckton. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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author: Ron Buckton
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description: >
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Modifiers syntax `(?im-s:)` (and similar) is legal, as long as they do not overlap.
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info: |
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Runtime Semantics: CompileAtom
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The syntax-directed operation CompileAtom takes arguments direction (forward or backward) and modifiers (a Modifiers Record) and returns a Matcher.
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Atom :: `(` `?` RegularExpressionFlags `-` RegularExpressionFlags `:` Disjunction `)`
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1. Let addModifiers be the source text matched by the first RegularExpressionFlags.
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2. Let removeModifiers be the source text matched by the second RegularExpressionFlags.
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3. Let newModifiers be UpdateModifiers(modifiers, CodePointsToString(addModifiers), CodePointsToString(removeModifiers)).
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4. Return CompileSubpattern of Disjunction with arguments direction and newModifiers.
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UpdateModifiers ( modifiers, add, remove )
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The abstract operation UpdateModifiers takes arguments modifiers (a Modifiers Record), add (a String), and remove (a String) and returns a Modifiers. It performs the following steps when called:
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1. Let dotAll be modifiers.[[DotAll]].
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2. Let ignoreCase be modifiers.[[IgnoreCase]].
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3. Let multiline be modifiers.[[Multiline]].
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4. If add contains "s", set dotAll to true.
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5. If add contains "i", set ignoreCase to true.
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6. If add contains "m", set multiline to true.
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7. If remove contains "s", set dotAll to false.
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8. If remove contains "i", set ignoreCase to false.
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9. If remove contains "m", set multiline to false.
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10. Return the Modifiers Record { [[DotAll]]: dotAll, [[IgnoreCase]]: ignoreCase, [[Multiline]]: multiline }.
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esid: sec-compileatom
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features: [regexp-modifiers]
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---*/
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/(?i-s:)/;
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/(?i-sm:)/;
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/(?i-m:)/;
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/(?i-ms:)/;
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/(?s-i:)/;
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/(?s-im:)/;
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/(?s-m:)/;
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/(?s-mi:)/;
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/(?m-i:)/;
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/(?m-is:)/;
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/(?m-s:)/;
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/(?m-si:)/;
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/(?is-m:)/;
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/(?im-s:)/;
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/(?si-m:)/;
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/(?sm-i:)/;
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/(?mi-s:)/;
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/(?ms-i:)/;
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new RegExp("(?i-s:)");
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new RegExp("(?i-sm:)");
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new RegExp("(?i-m:)");
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new RegExp("(?i-ms:)");
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new RegExp("(?s-i:)");
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new RegExp("(?s-im:)");
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new RegExp("(?s-m:)");
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new RegExp("(?s-mi:)");
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new RegExp("(?m-i:)");
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new RegExp("(?m-is:)");
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new RegExp("(?m-s:)");
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new RegExp("(?m-si:)");
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new RegExp("(?is-m:)");
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new RegExp("(?im-s:)");
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new RegExp("(?si-m:)");
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new RegExp("(?sm-i:)");
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new RegExp("(?mi-s:)");
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new RegExp("(?ms-i:)");
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