oxc_syntax/
node.rs

1//! AST Node ID and flags.
2use bitflags::bitflags;
3use oxc_index::define_nonmax_u32_index_type;
4
5define_nonmax_u32_index_type! {
6    /// AST Node ID
7    pub struct NodeId;
8}
9
10impl NodeId {
11    /// Mock node id.
12    ///
13    /// This is used for synthetically-created AST nodes, among other things.
14    pub const DUMMY: Self = NodeId::new(0);
15
16    /// Node id of the Program node.
17    pub const ROOT: Self = NodeId::new(0);
18}
19
20bitflags! {
21    /// Contains additional information about an AST node.
22    #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
23    pub struct NodeFlags: u8 {
24        /// Set if the Node has a JSDoc comment attached
25        const JSDoc     = 1 << 0;
26        /// Set on Nodes inside classes
27        const Class     = 1 << 1;
28        /// Set functions containing yield statements
29        const HasYield  = 1 << 2;
30        /// Set for `export { specifier }`
31        const ExportSpecifier  = 1 << 3;
32    }
33}
34
35impl NodeFlags {
36    /// Returns `true` if this node has a JSDoc comment attached to it.
37    #[inline]
38    pub fn has_jsdoc(self) -> bool {
39        self.contains(Self::JSDoc)
40    }
41
42    /// Returns `true` if this node is inside a class.
43    #[inline]
44    pub fn has_class(self) -> bool {
45        self.contains(Self::Class)
46    }
47
48    /// Returns `true` if this function has a yield statement.
49    #[inline]
50    pub fn has_yield(self) -> bool {
51        self.contains(Self::HasYield)
52    }
53
54    /// Returns `true` if this function has an export specifier.
55    #[inline]
56    pub fn has_export_specifier(self) -> bool {
57        self.contains(Self::ExportSpecifier)
58    }
59}
oxc_syntax/node.rs

oxc_syntax/
node.rs
