rust(day19): Part 2
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@ -687,7 +687,9 @@ mod day18 {
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mod day19 {
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use std::collections::BTreeMap as HashMap;
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use std::time::Duration;
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use std::fs::File;
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use std::io::{BufWriter, Write};
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use std::time::{Duration, Instant};
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#[derive(Debug)]
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enum Rhs {
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@ -733,63 +735,76 @@ mod day19 {
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Some((rules, messages))
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}
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pub fn run(_print: bool) -> Duration {
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let input = std::fs::read_to_string("../inputs/19").unwrap();
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fn generate(rules: &Rules, messages: &Vec<&str>, filename: &str) -> std::io::Result<()> {
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let write_file = File::create(filename)?;
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let mut w = BufWriter::new(&write_file);
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println!("from typing import Tuple");
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println!();
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let (rules, messages) = parse(&input).unwrap();
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writeln!(&mut w, "from typing import Tuple")?;
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writeln!(&mut w)?;
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for (i, rule) in rules.iter() {
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println!("def rule_{}(s: str) -> Tuple[bool, str]:", i);
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writeln!(&mut w, "def rule_{}(s):", i)?;
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writeln!(&mut w, " if s != '':")?;
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match rule {
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Rhs::Terminal(terminal) => {
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println!(" if s[0] == '{}':", terminal);
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println!(" return True, s[1:]");
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println!(" return False, s");
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writeln!(&mut w, " if s[0] == '{}':", terminal)?;
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writeln!(&mut w, " yield s[1:]")?;
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}
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Rhs::Variables(variables) => {
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for term in variables {
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println!(" r = s");
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for (j, variable) in term.iter().enumerate() {
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println!(" valid_{}, r = rule_{}(r)", j, variable);
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for (j, rule) in term.iter().enumerate() {
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if j == 0 {
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writeln!(&mut w, " v{} = rule_{}(s)", j, rule)?;
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} else {
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writeln!(
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&mut w,
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" v{} = (out for inp in v{} for out in rule_{}(inp))",
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j,
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j - 1,
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rule,
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)?;
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}
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}
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println!(" if all((");
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for j in 0..term.len() {
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println!(" valid_{}, ", j);
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}
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println!(" )):");
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println!(" return True, r");
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println!();
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writeln!(&mut w, " yield from v{}", term.len() - 1)?;
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writeln!(&mut w)?;
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}
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println!(" return False, s");
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}
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}
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println!();
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println!();
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writeln!(&mut w)?;
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}
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println!("def validate(s):");
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for i in 0..rules.len() {
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println!(" if rule_{}(s) == (True, ''):", i);
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println!(" return True");
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}
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println!(" return False");
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writeln!(&mut w, "def validate(s):")?;
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writeln!(&mut w, " return any(x == '' for x in rule_0(s))")?;
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println!();
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println!("if __name__ == '__main__':");
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println!(" part1 = 0");
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writeln!(&mut w)?;
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writeln!(&mut w, "if __name__ == '__main__':")?;
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writeln!(&mut w, " result = 0")?;
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for message in messages {
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println!(" if (result := validate('{}')):", message);
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println!(" part1 += 1");
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println!(" print('{}:', result)", message);
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println!();
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writeln!(&mut w, " success = validate('{}')", message)?;
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// writeln!(&mut w, " print('{}:', success)", message)?;
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writeln!(&mut w, " if success:")?;
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writeln!(&mut w, " result += 1")?;
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writeln!(&mut w)?;
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}
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println!(" print('Part 1:', part1)");
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writeln!(&mut w, " print('Result:', result)")?;
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Duration::new(0, 0)
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Ok(())
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}
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pub fn run(_print: bool) -> Duration {
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let input = std::fs::read_to_string("../inputs/19").unwrap();
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let instant = Instant::now();
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let (mut rules, messages) = parse(&input).unwrap();
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generate(&rules, &messages, "/tmp/day19-1.py").unwrap();
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rules.insert(8, Rhs::Variables(vec![vec![42], vec![42, 8]]));
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rules.insert(11, Rhs::Variables(vec![vec![42, 31], vec![42, 11, 31]]));
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generate(&rules, &messages, "/tmp/day19-2.py").unwrap();
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instant.elapsed()
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}
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}
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