sqruff_lib_core/parser/segments/
meta.rs

1use std::fmt::Debug;
2
3use ahash::AHashSet;
4
5use super::base::ErasedSegment;
6use crate::dialects::syntax::{SyntaxKind, SyntaxSet};
7use crate::errors::SQLParseError;
8use crate::parser::context::ParseContext;
9use crate::parser::match_result::MatchResult;
10use crate::parser::matchable::{Matchable, MatchableTrait};
11
12pub type Indent = MetaSegment;
13
14#[derive(Debug, Clone, PartialEq)]
15pub struct MetaSegment {
16    id: u32,
17    pub(crate) kind: SyntaxKind,
18}
19
20impl MetaSegment {
21    pub fn from_kind(kind: SyntaxKind) -> Self {
22        Self { kind, id: 0 }
23    }
24
25    pub fn indent() -> Self {
26        Self::from_kind(SyntaxKind::Indent)
27    }
28
29    pub fn dedent() -> Self {
30        Self::from_kind(SyntaxKind::Dedent)
31    }
32
33    pub fn implicit_indent() -> Self {
34        Self::from_kind(SyntaxKind::Implicit)
35    }
36}
37
38impl MatchableTrait for MetaSegment {
39    fn elements(&self) -> &[Matchable] {
40        &[]
41    }
42
43    fn simple(
44        &self,
45        _parse_context: &ParseContext,
46        _crumbs: Option<Vec<&str>>,
47    ) -> Option<(AHashSet<String>, SyntaxSet)> {
48        None
49    }
50
51    fn match_segments(
52        &self,
53        _segments: &[ErasedSegment],
54        _idx: u32,
55        _parse_context: &mut ParseContext,
56    ) -> Result<MatchResult, SQLParseError> {
57        panic!(
58            "{} has no match method, it should only be used in a Sequence!",
59            std::any::type_name::<Self>()
60        );
61    }
62}
sqruff_lib_core/parser/segments/meta.rs

sqruff_lib_core/parser/segments/
meta.rs
