tsz_parser/parser/
node_modifiers.rs

1//! Modifier query utilities for `NodeArena`.
2//!
3//! Provides shared helpers for checking whether a node's modifier list
4//! contains a specific `SyntaxKind`. This consolidates the `has_*_modifier`
5//! pattern that was previously duplicated across binder, checker, emitter,
6//! and lowering crates.
7
8use super::base::{NodeIndex, NodeList};
9use super::node::NodeArena;
10use tsz_scanner::SyntaxKind;
11
12impl NodeArena {
13    /// Check whether a modifier list contains a modifier of the given kind.
14    ///
15    /// This is the single source of truth for the "scan modifiers for a kind"
16    /// pattern used across all pipeline stages.
17    #[inline]
18    pub fn has_modifier(&self, modifiers: &Option<NodeList>, kind: SyntaxKind) -> bool {
19        if let Some(mods) = modifiers {
20            for &mod_idx in &mods.nodes {
21                if let Some(mod_node) = self.get(mod_idx)
22                    && mod_node.kind == kind as u16
23                {
24                    return true;
25                }
26            }
27        }
28        false
29    }
30
31    /// Like [`has_modifier`](Self::has_modifier) but accepts `Option<&NodeList>`.
32    #[inline]
33    pub fn has_modifier_ref(&self, modifiers: Option<&NodeList>, kind: SyntaxKind) -> bool {
34        if let Some(mods) = modifiers {
35            for &mod_idx in &mods.nodes {
36                if let Some(mod_node) = self.get(mod_idx)
37                    && mod_node.kind == kind as u16
38                {
39                    return true;
40                }
41            }
42        }
43        false
44    }
45
46    /// Find the first modifier of the given kind, returning its `NodeIndex`.
47    #[inline]
48    pub fn find_modifier(
49        &self,
50        modifiers: &Option<NodeList>,
51        kind: SyntaxKind,
52    ) -> Option<NodeIndex> {
53        if let Some(mods) = modifiers {
54            for &mod_idx in &mods.nodes {
55                if let Some(mod_node) = self.get(mod_idx)
56                    && mod_node.kind == kind as u16
57                {
58                    return Some(mod_idx);
59                }
60            }
61        }
62        None
63    }
64}
tsz_parser/parser/node_modifiers.rs

tsz_parser/parser/
node_modifiers.rs
