1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[repr(u16)]
#[allow(non_camel_case_types)]
pub enum SyntaxKind {
    // Internals
    TOKEN_COMMENT,
    TOKEN_ERROR,
    TOKEN_WHITESPACE,

    // Keywords
    TOKEN_ASSERT,
    TOKEN_ELSE,
    TOKEN_IF,
    TOKEN_IN,
    TOKEN_INHERIT,
    TOKEN_LET,
    TOKEN_REC,
    TOKEN_THEN,
    TOKEN_WITH,

    // Symbols
    TOKEN_CURLY_B_OPEN,
    TOKEN_CURLY_B_CLOSE,
    TOKEN_SQUARE_B_OPEN,
    TOKEN_SQUARE_B_CLOSE,
    TOKEN_ASSIGN,
    TOKEN_AT,
    TOKEN_COLON,
    TOKEN_COMMA,
    TOKEN_DOT,
    TOKEN_ELLIPSIS,
    TOKEN_QUESTION,
    TOKEN_SEMICOLON,

    // Operators
    TOKEN_PAREN_OPEN,
    TOKEN_PAREN_CLOSE,
    TOKEN_CONCAT,
    TOKEN_INVERT,
    TOKEN_UPDATE,

    TOKEN_ADD,
    TOKEN_SUB,
    TOKEN_MUL,
    TOKEN_DIV,

    TOKEN_AND,
    TOKEN_EQUAL,
    TOKEN_IMPLICATION,
    TOKEN_LESS,
    TOKEN_LESS_OR_EQ,
    TOKEN_MORE,
    TOKEN_MORE_OR_EQ,
    TOKEN_NOT_EQUAL,
    TOKEN_OR,

    // Identifiers and values
    TOKEN_DYNAMIC_END,
    TOKEN_DYNAMIC_START,
    TOKEN_FLOAT,
    TOKEN_IDENT,
    TOKEN_INTEGER,
    TOKEN_INTERPOL_END,
    TOKEN_INTERPOL_START,
    TOKEN_PATH,
    TOKEN_URI,
    TOKEN_STRING_CONTENT,
    TOKEN_STRING_END,
    TOKEN_STRING_START,

    NODE_APPLY,
    NODE_ASSERT,
    NODE_KEY,
    NODE_DYNAMIC,
    NODE_ERROR,
    NODE_IDENT,
    NODE_IF_ELSE,
    NODE_SELECT,
    NODE_INHERIT,
    NODE_INHERIT_FROM,
    NODE_STRING,
    NODE_STRING_INTERPOL,
    NODE_LAMBDA,
    // An old let { x = 92; body = x; } syntax
    NODE_LEGACY_LET,
    NODE_LET_IN,
    NODE_LIST,
    NODE_BIN_OP,
    NODE_OR_DEFAULT,
    NODE_PAREN,
    NODE_PATTERN,
    NODE_PAT_BIND,
    NODE_PAT_ENTRY,
    NODE_ROOT,
    NODE_ATTR_SET,
    NODE_KEY_VALUE,
    NODE_UNARY_OP,
    NODE_LITERAL,
    NODE_WITH,

    #[doc(hidden)]
    __LAST,
}
use SyntaxKind::*;

impl SyntaxKind {
    /// Returns true if this token is a literal, such as an integer or a string
    pub fn is_literal(self) -> bool {
        match self {
            TOKEN_FLOAT | TOKEN_INTEGER | TOKEN_PATH | TOKEN_URI => true,
            _ => false,
        }
    }
    /// Returns true if this token should be used as a function argument.
    /// ```ignore
    /// Example:
    /// add 1 2 + 3
    /// ^   ^ ^ ^
    /// |   | | +- false
    /// |   | +- true
    /// |   +- true
    /// +- true
    /// ```
    pub fn is_fn_arg(self) -> bool {
        match self {
            TOKEN_REC | TOKEN_CURLY_B_OPEN | TOKEN_SQUARE_B_OPEN | TOKEN_PAREN_OPEN
            | TOKEN_STRING_START | TOKEN_IDENT => true,
            _ => self.is_literal(),
        }
    }
    /// Returns true if this token is a comment, whitespace, or similar, and
    /// should be skipped over by the parser.
    pub fn is_trivia(self) -> bool {
        match self {
            TOKEN_COMMENT | TOKEN_ERROR | TOKEN_WHITESPACE => true,
            _ => false,
        }
    }
}