neutralts/bif/
parse_bif_contains.rs

1#![doc = include_str!("../../doc/bif-contains.md")]
2
3use crate::{bif::constants::*, bif::Bif, bif::BifError, constants::*};
4
5impl<'a> Bif<'a> {
6    /*
7        {:contains; /haystack/needle/ >> ... :}
8    */
9    pub(crate) fn parse_bif_contains(&mut self) -> Result<(), BifError> {
10        if self.mod_filter {
11            return Err(self.bif_error(BIF_ERROR_MODIFIER_NOT_ALLOWED));
12        }
13
14        self.extract_params_code(false);
15
16        if self.params.contains("{:flg;") {
17            return Err(self.bif_error(BIF_ERROR_FLAGS_NOT_ALLOWED));
18        }
19
20        let args = self.extract_args();
21
22        let haystack = args
23            .get(1)
24            .cloned()
25            .ok_or_else(|| self.bif_error(BIF_ERROR_ARGUMENTS_NOT_FOUND))?;
26
27        let needle = args
28            .get(2)
29            .cloned()
30            .ok_or_else(|| self.bif_error(BIF_ERROR_ARGUMENTS_NOT_FOUND))?;
31
32        if haystack.contains(&needle) ^ self.mod_negate {
33            if self.code.contains(BIF_OPEN) {
34                self.code = new_child_parse!(self, &self.code, self.mod_scope);
35            }
36            self.out = self.code.to_string();
37        } else {
38            self.out = EMPTY_STRING;
39        }
40
41        Ok(())
42    }
43}
44
45#[cfg(test)]
46#[path = "parse_bif_contains_tests.rs"]
47mod tests;
neutralts/bif/parse_bif_contains.rs

neutralts/bif/
parse_bif_contains.rs
