f1dd770a8a
The spec requires that invalid RegExp literals must cause a Syntax Error before the JavaScript is executed. See: https://tc39.es/ecma262/#sec-patterns-static-semantics-early-errors This is explicitly tested in the RegExp/property-escapes test262 tests. For example, see unsupported-property-Line_Break.js: $DONOTEVALUATE(); /\p{Line_Break}/u; That RegExp literal is invalid because Line_Break is not a supported Unicode property. $DONOTEVALUATE() just throws an exception when it is executed. The test expects that this file will fail to be parsed. Note that RegExp patterns can still be parsed at execution time by way of "new RegExp(...)".
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
/*
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* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Result.h>
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#include <LibJS/AST.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibRegex/Regex.h>
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namespace JS {
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RegExpObject* regexp_create(GlobalObject&, Value pattern, Value flags);
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Result<regex::RegexOptions<ECMAScriptFlags>, String> regex_flags_from_string(StringView flags);
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String parse_regex_pattern(StringView pattern, bool unicode);
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class RegExpObject : public Object {
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JS_OBJECT(RegExpObject, Object);
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public:
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// JS regexps are all 'global' by default as per our definition, but the "global" flag enables "stateful".
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// FIXME: Enable 'BrowserExtended' only if in a browser context.
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static constexpr regex::RegexOptions<ECMAScriptFlags> default_flags { (regex::ECMAScriptFlags)regex::AllFlags::Global | (regex::ECMAScriptFlags)regex::AllFlags::SkipTrimEmptyMatches | regex::ECMAScriptFlags::BrowserExtended };
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static RegExpObject* create(GlobalObject&, Regex<ECMA262> regex, String pattern, String flags);
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RegExpObject(Regex<ECMA262> regex, String pattern, String flags, Object& prototype);
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virtual void initialize(GlobalObject&) override;
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virtual ~RegExpObject() override;
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const String& pattern() const { return m_pattern; }
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const String& flags() const { return m_flags; }
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const Regex<ECMA262>& regex() { return m_regex; }
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const Regex<ECMA262>& regex() const { return m_regex; }
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private:
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String m_pattern;
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String m_flags;
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Regex<ECMA262> m_regex;
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};
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}
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