mirror of https://github.com/tc39/test262.git
66 lines
2.3 KiB
JavaScript
66 lines
2.3 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 `(?-ims:)` is legal.
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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:)/i;
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/(?-is:)/is;
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/(?-im:)/im;
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/(?-s:)/s;
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/(?-si:)/si;
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/(?-sm:)/sm;
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/(?-m:)/m;
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/(?-mi:)/mi;
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/(?-ms:)/ms;
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/(?-ims:)/ims;
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/(?-ism:)/ism;
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/(?-sim:)/sim;
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/(?-smi:)/smi;
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/(?-mis:)/mis;
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/(?-msi:)/msi;
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new RegExp("(?-i:)", "i");
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new RegExp("(?-is:)", "is");
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new RegExp("(?-im:)", "im");
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new RegExp("(?-s:)", "s");
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new RegExp("(?-si:)", "si");
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new RegExp("(?-sm:)", "sm");
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new RegExp("(?-m:)", "m");
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new RegExp("(?-mi:)", "mi");
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new RegExp("(?-ms:)", "ms");
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new RegExp("(?-ims:)", "ims");
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new RegExp("(?-ism:)", "ism");
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new RegExp("(?-sim:)", "sim");
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new RegExp("(?-smi:)", "smi");
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new RegExp("(?-mis:)", "mis");
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new RegExp("(?-msi:)", "msi");
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