ecsolticia.codeberg.page
Tiny expressions-based language for elementary cellular automata simulation
1mod preproc;
2mod ast;
3mod table;
4mod states;
5
6use anyhow::{Result, Context};
7use crate::ast::Parseable;
8
9fn read_source(path: &str) -> Result<String> {
10 std::fs::read_to_string(path)
11 .with_context(||
12 format!("Failed to read file at path '{}'", path)
13 )
14}
15
16pub fn run(path: &str) -> Result<()> {
17 let source: String = read_source(path)?;
18
19 let mut flat_parser = preproc::tokenize(source);
20
21 let parsers = crate::preproc::Parsers::new(&mut flat_parser).with_context(||
22 format!("Could not determine different parts of the expression.")
23 )?;
24
25 let mut l_parser = parsers.l_parser;
26
27 let expr = ast::Expr::consume(&mut l_parser)?;
28
29 let table = ast::build_table(expr);
30
31 let mut states_parser = parsers.s_parser;
32
33 let mut states = states::States::parse(&mut states_parser);
34
35 let steps = parsers.steps;
36
37 for _ in 0..steps {
38 states.print();
39 states.update_using(&table);
40 }
41 states.print();
42
43 Ok(())
44}