luau_lexer/token/
keyword.rs

1//! [`Keyword`] and [`PartialKeyword`] enums.
2
3/// A macro to generate an enum for keywords.
4macro_rules! generate_keyword_enum {
5    ($(#[$meta:meta])* $vis:vis enum $struct: ident {
6        $( $(#[$name_meta:meta])* $str: literal => $name: ident ),* $(,)?
7    }) => {
8        $(#[$meta])*
9        #[derive(Clone, Copy, Debug, Hash, PartialEq, Eq, PartialOrd, Ord)]
10        #[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
11        $vis enum $struct {
12            $( $(#[$name_meta])* $name, )*
13        }
14
15        impl $struct {
16            /// Try creating this item from a string.
17            pub fn try_from_str(value: &str) -> Option<Self> {
18                match value {
19                    $( $str => Some(Self::$name), )*
20                    _ => None,
21                }
22            }
23        }
24
25        impl std::fmt::Display for $struct {
26            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
27                f.write_str(match self {
28                    $( Self::$name => $str, )*
29                })
30            }
31        }
32    };
33}
34
35generate_keyword_enum!(
36    /// Words that can only be used as be keywords. Check [`PartialKeyword`].
37    pub enum Keyword {
38        /// The `local` keyword.
39        "local" => Local,
40
41        /// The `function` keyword.
42        "function" => Function,
43
44        /// The `if` keyword.
45        "if" => If,
46
47        /// The `elseif` keyword.
48        "elseif" => Elseif,
49
50        /// The `then` keyword.
51        "then" => Then,
52
53        /// The `else` keyword.
54        "else" => Else,
55
56        /// The `while` keyword.
57        "while" => While,
58
59        /// The `for` keyword.
60        "for" => For,
61
62        /// The `in` keyword.
63        "in" => In,
64
65        /// The `do` keyword.
66        "do" => Do,
67
68        /// The `break` keyword.
69        "break" => Break,
70
71        /// The `return` keyword.
72        "return" => Return,
73
74        /// The `end` keyword.
75        "end" => End,
76
77        /// The `repeat` keyword.
78        "repeat" => Repeat,
79
80        /// The `until` keyword.
81        "until" => Until,
82
83        /// The `nil` keyword.
84        "nil" => Nil,
85    }
86);
87generate_keyword_enum!(
88    /// Words that can be keywords or identifiers, depending on the context.
89    /// Check [`Keyword`].
90    pub enum PartialKeyword {
91        /// The `type` keyword
92        "type" => Type,
93
94        /// The `continue` keyword
95        "continue" => Continue,
96
97        /// The `export` keyword
98        "export" => Export,
99
100        /// The `typeof` keyword
101        "typeof" => TypeOf,
102    }
103);
luau_lexer/token/keyword.rs

luau_lexer/token/
keyword.rs
