wgsl_parser/decl/
legacy.rs

1use gramatika::{Parse, ParseStreamer, Span, Spanned, Substr, Token as _};
2
3use crate::{
4	token::{keyword, punct, Token, TokenKind},
5	ParseStream,
6};
7
8#[derive(Clone, DebugLisp)]
9pub struct ExtensionDecl {
10	pub keyword: Token,
11	pub name: Token,
12}
13
14#[derive(Clone, DebugLisp)]
15pub struct ModuleDecl {
16	pub import_kw: Token,
17	pub name: Token,
18	pub from_kw: Token,
19	pub path: Token,
20	pub semicolon: Token,
21}
22
23impl Parse for ExtensionDecl {
24	type Stream = ParseStream;
25
26	fn parse(input: &mut Self::Stream) -> gramatika::Result<Self> {
27		let keyword = input.consume(keyword![enable])?;
28		let name = input.consume_as(TokenKind::Ident, Token::Module)?;
29		input.consume(punct![;])?;
30
31		Ok(Self { keyword, name })
32	}
33}
34
35impl Spanned for ExtensionDecl {
36	fn span(&self) -> Span {
37		self.keyword.span().through(self.name.span())
38	}
39}
40
41impl ModuleDecl {
42	pub fn path(&self) -> Substr {
43		let path = self.path.lexeme();
44
45		path.substr(1..path.len() - 1)
46	}
47}
48
49impl Parse for ModuleDecl {
50	type Stream = ParseStream;
51
52	fn parse(input: &mut Self::Stream) -> gramatika::Result<Self> {
53		let import_kw = input.consume(keyword![import])?;
54		let name = input.consume_as(TokenKind::Ident, Token::Module)?;
55		let from_kw = input.consume(keyword![from])?;
56		let path = input.consume_kind(TokenKind::Path)?;
57		let semicolon = input.consume(punct![;])?;
58
59		Ok(Self {
60			import_kw,
61			name,
62			from_kw,
63			path,
64			semicolon,
65		})
66	}
67}
68
69impl Spanned for ModuleDecl {
70	fn span(&self) -> Span {
71		self.import_kw.span().through(self.semicolon.span())
72	}
73}
wgsl_parser/decl/legacy.rs

wgsl_parser/decl/
legacy.rs
