106 lines
3.1 KiB
Plaintext
106 lines
3.1 KiB
Plaintext
// This file holds a list of keywords/symbols for the Rhai language, with mapping to
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// an appropriate `Token` variant.
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//
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// Generate the output table via:
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// ```bash
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// gperf keywords.txt
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// ```
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//
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// Since GNU gperf does not produce Rust output, the ANSI-C output must be hand-edited and
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// manually spliced into `tokenizer.rs`.
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//
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// This includes:
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// * Rewrite the C hashing program (especially since it uses a `switch` statement with fall-through)
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// into equivalent Rust as the function `lookup_symbol_from_syntax`.
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// * Update the values for the `???_KEYWORD_???` constants.
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// * Copy the `asso_values` array into `KEYWORD_ASSOC_VALUES`.
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// * Copy the `wordlist` array into `KEYWORDS_LIST` with the following modifications:
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// - Remove the `#line` comments
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// - Change the entry wrapping `{ .. }` into tuples `( .. )`
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// - Put feature flags on the appropriate lines, and duplicating lines that maps to `Token::EOF`
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// for the opposite feature flags
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//
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%global-table
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%struct-type
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%omit-struct-type
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%define initializer-suffix ,Token::EOF
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struct keyword;
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%%
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{, Token::LeftBrace
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}, Token::RightBrace
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(, Token::LeftParen
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), Token::RightParen
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[, Token::LeftBracket
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], Token::RightBracket
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(), Token::Unit
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+, Token::Plus
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-, Token::Minus
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*, Token::Multiply
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/, Token::Divide
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;, Token::SemiColon
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:, Token::Colon
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::, Token::DoubleColon
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=>, Token::DoubleArrow
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_, Token::Underscore
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",", Token::Comma
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., Token::Period
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?., Token::Elvis
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??, Token::DoubleQuestion
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?[, Token::QuestionBracket
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.., Token::ExclusiveRange
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..=, Token::InclusiveRange
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"#{", Token::MapStart
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=, Token::Equals
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true, Token::True
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false, Token::False
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let, Token::Let
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const, Token::Const
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if, Token::If
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else, Token::Else
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switch, Token::Switch
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do, Token::Do
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while, Token::While
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until, Token::Until
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loop, Token::Loop
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for, Token::For
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in, Token::In
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!in, Token::NotIn
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<, Token::LessThan
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>, Token::GreaterThan
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<=, Token::LessThanEqualsTo
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>=, Token::GreaterThanEqualsTo
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==, Token::EqualsTo
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!=, Token::NotEqualsTo
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!, Token::Bang
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|, Token::Pipe
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||, Token::Or
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&, Token::Ampersand
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&&, Token::And
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continue, Token::Continue
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break, Token::Break
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return, Token::Return
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throw, Token::Throw
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try, Token::Try
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catch, Token::Catch
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+=, Token::PlusAssign
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-=, Token::MinusAssign
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*=, Token::MultiplyAssign
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/=, Token::DivideAssign
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<<=, Token::LeftShiftAssign
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>>=, Token::RightShiftAssign
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&=, Token::AndAssign
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|=, Token::OrAssign
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^=, Token::XOrAssign
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<<, Token::LeftShift
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>>, Token::RightShift
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^, Token::XOr
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"%", Token::Modulo
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"%=", Token::ModuloAssign
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**, Token::PowerOf
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**=, Token::PowerOfAssign
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fn, Token::Fn
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private, Token::Private
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import, Token::Import
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export, Token::Export
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as, Token::As
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