neutralts/bif/
parse_bif_defined.rs

1#![doc = include_str!("../../doc/bif-defined.md")]
2
3use crate::{bif::constants::*, bif::Bif, bif::BifError, constants::*, utils::*};
4
5impl<'a> Bif<'a> {
6    /*
7        {:defined; varname >> ... :}
8    */
9    pub(crate) fn parse_bif_defined(&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(true);
15
16        if !self.flags.is_empty() {
17            return Err(self.bif_error(BIF_ERROR_FLAGS_NOT_ALLOWED));
18        }
19
20        let mut varname = self.params.as_str();
21        let mut schema = &self.shared.schema["data"];
22
23        if varname.starts_with("local::") {
24            schema = &self.shared.schema["__indir"][&self.inherit.indir]["data"];
25            varname = varname.strip_prefix("local::").unwrap_or(varname);
26        }
27
28        if is_defined_key(schema, varname) ^ self.mod_negate {
29            if self.code.contains(BIF_OPEN) {
30                self.code = new_child_parse!(self, &self.code, self.mod_scope);
31            }
32            self.out = self.code.to_string();
33        }
34
35        Ok(())
36    }
37}
38
39#[cfg(test)]
40#[path = "parse_bif_defined_tests.rs"]
41mod tests;
neutralts/bif/parse_bif_defined.rs

neutralts/bif/
parse_bif_defined.rs
