glsl_lang_lexer/
lib.rs

1mod context;
2pub use context::*;
3
4mod token;
5use lang_util::position::LexerPosition;
6pub use token::*;
7
8mod lang_token;
9
10pub mod min;
11
12#[cfg(feature = "full")]
13pub mod full;
14
15/// Language lexer error definition
16pub trait HasLexerError {
17    /// Type of lexical analysis error
18    type Error: lang_util::error::LexicalError;
19}
20
21/// GLSL language lexer
22pub trait LangLexer<'i>: HasLexerError + Sized {
23    /// Type of the input for this lexer
24    type Input: 'i;
25    /// Type of the iterator returned by this lexer
26    type Iter: LangLexerIterator + HasLexerError<Error = Self::Error>;
27
28    /// Instantiate the lexer
29    ///
30    /// # Parameters
31    ///
32    /// * `source`: input for the lexer
33    /// * `opts`: parsing options
34    fn new(source: Self::Input, opts: &ParseOptions) -> Self;
35
36    /// Run the lexer
37    fn run(self, ctx: ParseContext) -> Self::Iter;
38}
39
40/// GLSL language lexer iterator
41pub trait LangLexerIterator:
42    Iterator<Item = Result<(LexerPosition, Token, LexerPosition), Self::Error>> + HasLexerError
43{
44    fn resolve_err(
45        &self,
46        err: lalrpop_util::ParseError<LexerPosition, Token, Self::Error>,
47    ) -> lang_util::error::ParseError<Self::Error>;
48}
49
50#[cfg(test)]
51mod tests {
52    use super::*;
53
54    const HASH_IDENT_TEST_CASE: &str = "# (ident) = hello";
55
56    fn test_hash_ident_with_lexer<'i>(lexer: impl LangLexer<'i, Input = &'i str>) {
57        let tokens: Vec<_> = lexer.run(ParseContext::default()).collect();
58        eprintln!("{:#?}", tokens);
59        assert!(tokens.len() > 1);
60    }
61
62    #[test]
63    fn test_hash_ident_min() {
64        test_hash_ident_with_lexer(min::str::Lexer::new(
65            HASH_IDENT_TEST_CASE,
66            &ParseOptions {
67                allow_rs_ident: true,
68                ..Default::default()
69            },
70        ));
71    }
72
73    #[cfg(feature = "full")]
74    #[test]
75    fn test_hash_ident_full() {
76        test_hash_ident_with_lexer(full::str::Lexer::new(
77            HASH_IDENT_TEST_CASE,
78            &ParseOptions {
79                allow_rs_ident: true,
80                ..Default::default()
81            },
82        ));
83    }
84}
glsl_lang_lexer/lib.rs

glsl_lang_lexer/
lib.rs
