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LibJS: Do not save state for peeking at the next token from the lexer

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This saves having to save and load the parser state.
This could give an incorrect token in some cases where the parser
communicates to the lexer. However this is not applicable in any of the
current usages and this would require one to parse the current token
as normal which is exactly what you don't want to do in that scenario.
This commit is contained in:
davidot 2021-10-08 00:38:24 +02:00 • committed by Linus Groh
parent c3cb44ca8a
commit 9394cbcd24
2 changed files with 12 additions and 17 deletions
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8
Userland/Libraries/LibJS/Parser.h
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@ -172,9 +172,9 @@ private:
bool match_secondary_expression(const Vector<TokenType>& forbidden = {}) const;
bool match_statement() const;
bool match_export_or_import() const;
bool match_declaration();
bool try_match_let_declaration();
bool match_variable_declaration();
bool match_declaration() const;
bool try_match_let_declaration() const;
bool match_variable_declaration() const;
bool match_identifier() const;
bool match_identifier_name() const;
bool match_property_key() const;
@ -195,7 +195,7 @@ private:
RefPtr<BindingPattern> synthesize_binding_pattern(Expression const& expression);
Token next_token();
Token next_token() const;
void check_identifier_name_for_assignment_validity(StringView, bool force_strict = false);