src/game/evaluation.rs

@@ -1,3 +1,7 @@
+use std::fmt::Display;
+use std::io::Write;
+
+use colored::Colorize;
 use libpt::cli::console::{style, StyledObject};
 
 use crate::wlist::word::Word;
@@ -15,21 +19,6 @@ pub struct Evaluation {
 }
 
 impl Evaluation {
-    /// Display the evaluation color coded
-    pub fn colorized_display(&self) -> Vec<StyledObject<String>> {
-        let mut buf = Vec::new();
-        for e in self.inner.iter() {
-            let mut c = style(e.0.to_string());
-            if e.1 == Status::Matched {
-                c = c.green();
-            } else if e.1 == Status::Exists {
-                c = c.yellow();
-            }
-            buf.push(c);
-        }
-        buf
-    }
-
     /// The first string is the word the evaluation is for, The second string defines how the
     /// characters of the first string match the solution.
     ///
@@ -108,3 +97,20 @@ impl From<&Evaluation> for Word {
         Word::from(value.inner.iter().map(|v| v.0).collect::<String>())
     }
 }
+
+impl Display for Evaluation {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        for s in &self.inner {
+            write!(
+                f,
+                "{}",
+                match s.1 {
+                    Status::None => s.0.to_string().into(),
+                    Status::Exists => s.0.to_string().yellow(),
+                    Status::Matched => s.0.to_string().green(),
+                }
+            )?;
+        }
+        std::fmt::Result::Ok(())
+    }
+}

src/game/mod.rs

@@ -29,7 +29,6 @@ where
     solution: Option<WordData>,
     wordlist: &'wl WL,
     responses: Vec<GuessResponse>,
-    // TODO: keep track of the letters the user has tried
 }
 
 impl<'wl, WL: WordList> Game<'wl, WL> {
@@ -127,20 +126,40 @@ impl<'wl, WL: WordList> Game<'wl, WL> {
 
     /// Generates an [Evaluation] for a given solution and guess.
     pub(crate) fn evaluate(solution: WordData, guess: &Word) -> Evaluation {
-        let mut evaluation = Vec::new();
+        let solution = solution.0;
+        let mut evaluation: Vec<(char, Status)> = vec![('!', Status::None); solution.len()];
         let mut status: Status;
-        let mut buf = solution.0.clone();
-        for ((idx, c_guess), c_sol) in guess.chars().enumerate().zip(solution.0.chars()) {
+        let mut buf: Vec<char> = solution.chars().collect();
+
+        // first the correct solutions
+        for ((idx, c_guess), c_sol) in guess.chars().enumerate().zip(solution.chars()) {
             if c_guess == c_sol {
                 status = Status::Matched;
-                buf.replace_range(idx..idx + 1, "_");
-            } else if buf.contains(c_guess) {
-                status = Status::Exists;
-                buf = buf.replacen(c_guess, "_", 1);
-            } else {
-                status = Status::None
+                buf[idx] = '!';
+                evaluation[idx] = (c_guess, status);
             }
-            evaluation.push((c_guess, status));
+        }
+
+        // then check if the char exists, but was not guessed to be at the correct position
+        //
+        // We split this up, because finding the "exists" chars at the same time as the "correct"
+        // chars causes bugs
+        for ((idx, c_guess), c_sol) in guess.chars().enumerate().zip(solution.chars()) {
+            if c_guess == c_sol {
+                continue;
+            } else if buf.contains(&c_guess) {
+                status = Status::Exists;
+                // replace that char in the buffer to signal that is has been paired with the
+                // current char
+                let idx_of_a_match = buf
+                    .iter()
+                    .position(|c| *c == c_guess)
+                    .expect("did not find a character in a string even though we know it exists");
+                buf[idx_of_a_match] = '!';
+            } else {
+                status = Status::None;
+            }
+            evaluation[idx] = (c_guess, status);
         }
         evaluation.into()
     }
@@ -359,16 +378,8 @@ impl<'wl, WL: WordList> Display for Game<'wl, WL> {
             self.step(),
             self.solution(),
         )?;
-        for s in self
-            .responses()
-            .iter()
-            .map(|v| v.evaluation().to_owned().colorized_display())
-        {
-            write!(f, "\"")?;
-            for si in s {
-                write!(f, "{si}")?;
-            }
-            write!(f, "\", ")?;
+        for s in self.responses() {
+            write!(f, "\"{s}\",")?;
         }
         Ok(())
     }

src/game/response.rs

@@ -92,17 +92,6 @@ impl GuessResponse {
 
 impl Display for GuessResponse {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        for s in self.evaluation.clone().into_iter() {
-            write!(
-                f,
-                "{}",
-                match s.1 {
-                    Status::None => s.0.to_string().into(),
-                    Status::Exists => s.0.to_string().yellow(),
-                    Status::Matched => s.0.to_string().green(),
-                }
-            )?;
-        }
-        std::fmt::Result::Ok(())
+        write!(f, "{}", self.evaluation())
     }
 }

src/solve/naive/mod.rs

@@ -3,15 +3,16 @@ use std::collections::HashMap;
 use libpt::log::{debug, error, info, trace};
 
 use crate::error::{SolverError, WResult};
-use crate::game::evaluation::Evaluation;
+use crate::game::evaluation::{Evaluation, EvaluationUnit};
+use crate::game::response::Status;
 use crate::wlist::word::{Word, WordData};
 use crate::wlist::WordList;
 
-use super::{AnyBuiltinSolver, Solver, Status};
-
 mod states;
 use states::*;
 
+use super::{AnyBuiltinSolver, Solver};
+
 #[derive(Debug, Clone)]
 pub struct NaiveSolver<'wl, WL> {
     wl: &'wl WL,
@@ -37,9 +38,10 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for NaiveSolver<'wl, WL> {
         let mut state: SolverState = SolverState::new();
         let responses = game.responses().iter().enumerate();
         for (_idx, response) in responses {
-            let mut already_found_amounts: HashMap<char, usize> = HashMap::new();
+            let mut abs_freq: HashMap<char, usize> = HashMap::new();
             let evaluation: &Evaluation = response.evaluation();
             for (idx, p) in evaluation.clone().into_iter().enumerate() {
+                state.start_step();
                 match p.1 {
                     Status::Matched => {
                         pattern.replace_range(idx..idx + 1, &p.0.to_string());
@@ -49,7 +51,7 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for NaiveSolver<'wl, WL> {
                             .entry(p.0)
                             .or_insert(CharInfo::new(game.length()))
                             .found_at(idx);
-                        *already_found_amounts.entry(p.0).or_default() += 1;
+                        *abs_freq.entry(p.0).or_default() += 1;
                     }
                     Status::Exists => {
                         let cinfo = state
@@ -57,16 +59,19 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for NaiveSolver<'wl, WL> {
                             .entry(p.0)
                             .or_insert(CharInfo::new(game.length()));
                         cinfo.tried_but_failed(idx);
-                        *already_found_amounts.entry(p.0).or_default() += 1;
-                        cinfo.min_occurences(already_found_amounts[&p.0]);
+                        *abs_freq.entry(p.0).or_default() += 1;
                     }
-                    Status::None => state
+                    Status::None => {
+                        let cinfo = state
                             .char_map_mut()
                             .entry(p.0)
-                        .or_insert(CharInfo::new(game.length()))
-                        .max_occurences(*already_found_amounts.entry(p.0).or_default()),
+                            .or_insert(CharInfo::new(game.length()));
+                        cinfo.tried_but_failed(idx);
+                        abs_freq.entry(p.0).or_default();
                     }
-                trace!("absolute frequencies: {already_found_amounts:?}");
+                }
+                trace!("absolute frequencies: {abs_freq:?}");
+                state.finish_step(&abs_freq);
             }
         }
 
@@ -87,6 +92,9 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for NaiveSolver<'wl, WL> {
             .filter(|solution_candidate| {
                 if !game.responses().is_empty()
                     && !state.has_all_known_contained(&solution_candidate.0)
+                // we need these sometimes,
+                // because we can't just input gibberish
+                //&& !state.has_wrong_chars(&solution_candidate.0)
                 {
                     trace!("known cont:{:#?}", state.get_all_known_contained());
                     return false;

src/solve/naive/states.rs

@@ -33,10 +33,17 @@ impl SolverState {
         &mut self.char_map
     }
 
+    pub(crate) fn get_all_known_bad(&self) -> Vec<(&char, &CharInfo)> {
+        self.char_map
+            .iter()
+            .filter(|(_key, value)| value.not_in_solution())
+            .collect()
+    }
+
     pub(crate) fn get_all_known_contained(&self) -> Vec<(&char, &CharInfo)> {
         self.char_map
             .iter()
-            .filter(|(key, value)| value.part_of_solution())
+            .filter(|(_key, value)| value.known_part_of_solution())
             .collect()
     }
 
@@ -48,6 +55,37 @@ impl SolverState {
         }
         true
     }
+
+    pub(crate) fn start_step(&mut self) {}
+
+    pub(crate) fn finish_step(&mut self, abs_freq: &HashMap<char, usize>) {
+        for (k, v) in abs_freq {
+            if *v == 0 {
+                self.char_map
+                    .get_mut(k)
+                    .expect(
+                        "char in abs_freq was not added to the char_map before finalizing the step",
+                    )
+                    .max_occurences(0);
+            } else {
+                self.char_map
+                    .get_mut(k)
+                    .expect(
+                        "char in abs_freq was not added to the char_map before finalizing the step",
+                    )
+                    .min_occurences(*v);
+            }
+        }
+    }
+
+    pub(crate) fn has_wrong_chars(&self, guess: &Word) -> bool {
+        for needed_char in self.get_all_known_bad() {
+            if guess.contains(*needed_char.0) {
+                return false;
+            }
+        }
+        true
+    }
 }
 
 impl CharInfo {
@@ -77,7 +115,12 @@ impl CharInfo {
     }
 
     #[must_use]
-    pub fn part_of_solution(&self) -> bool {
+    pub fn not_in_solution(&self) -> bool {
+        self.occurences_amount.end == 0
+    }
+
+    #[must_use]
+    pub fn known_part_of_solution(&self) -> bool {
         self.occurences_amount.start > 0 && self.occurences_amount.end > 0
     }
 
@@ -129,7 +172,7 @@ impl CharInfo {
 
 impl Debug for CharInfo {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        if self.part_of_solution() {
+        if !self.not_in_solution() {
             f.debug_struct("CharInfo")
                 .field("correct_idxs", &self.confirmed_indexes)
                 .field("amnt_occ", &self.occurences_amount)

tests/game.rs

@@ -0,0 +1,135 @@
+use test_log::test; // set the log level with an envvar: `RUST_LOG=trace cargo test`
+
+use libpt::log::info;
+use wordle_analyzer::game::evaluation::Evaluation;
+use wordle_analyzer::wlist::builtin::BuiltinWList;
+use wordle_analyzer::wlist::WordList;
+
+use wordle_analyzer::wlist::word::Word;
+use wordle_analyzer::{self, game};
+
+fn wordlist() -> impl WordList {
+    BuiltinWList::default()
+}
+
+#[test]
+fn test_eval_simple() -> anyhow::Result<()> {
+    let wl = wordlist();
+    let builder = game::Game::builder(&wl)
+        .length(5)
+        .max_steps(6)
+        .solution(Some(wl.get_word(&Word::from("crate")).unwrap()))
+        .precompute(false);
+
+    let mut game = builder.build()?;
+    let guess = Word::from("slate");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "xxccc")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    let mut game = builder.build()?;
+    let guess = Word::from("about");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "fxxxf")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    Ok(())
+}
+
+#[test]
+fn test_eval_reoccuring_char0() -> anyhow::Result<()> {
+    let wl = wordlist();
+    let builder = game::Game::builder(&wl)
+        .solution(Some(wl.get_word(&Word::from("nines")).unwrap()))
+        .precompute(false);
+    info!("solution=nines");
+
+    let mut game = builder.build()?;
+    let guess = Word::from("pines");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "xcccc")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    let mut game = builder.build()?;
+    let guess = Word::from("sides");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "xcxcc")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    let mut game = builder.build()?;
+    let guess = Word::from("ninja");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "cccxx")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    let mut game = builder.build()?;
+    let guess = Word::from("which");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "xxfxx")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    let mut game = builder.build()?;
+    let guess = Word::from("indie");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "ffxxf")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    Ok(())
+}
+
+#[test]
+fn test_eval_reoccuring_char1() -> anyhow::Result<()> {
+    let wl = wordlist();
+    let builder = game::Game::builder(&wl)
+        .solution(Some(wl.get_word(&Word::from("fatty")).unwrap()))
+        .precompute(false);
+    info!("solution=fatty");
+
+    let mut game = builder.build()?;
+    let guess = Word::from("state");
+    game.guess(&guess, None)?;
+    let correct = Evaluation::build(&guess, "xffcx")?;
+    info!(
+        "{} =? {}",
+        *game.last_response().unwrap().evaluation(),
+        correct
+    );
+    assert_eq!(*game.last_response().unwrap().evaluation(), correct);
+
+    Ok(())
+}

tests/solver.rs

@@ -1,9 +1,12 @@
 use test_log::test; // set the log level with an envvar: `RUST_LOG=trace cargo test`
 
+use wordle_analyzer::game::Game;
 use wordle_analyzer::solve::{AnyBuiltinSolver, NaiveSolver, Solver, StupidSolver};
 use wordle_analyzer::wlist::builtin::BuiltinWList;
 use wordle_analyzer::wlist::WordList;
 
+use rayon::prelude::*;
+
 fn wordlist() -> impl WordList {
     BuiltinWList::default()
 }
@@ -16,3 +19,19 @@ fn test_build_builtin_solvers() {
     let _naive_solver =
         AnyBuiltinSolver::Naive(NaiveSolver::build(&wl).expect("could not build naive solver"));
 }
+
+#[test]
+fn test_naive_win_games() -> anyhow::Result<()> {
+    let wl = wordlist();
+    let sl =
+        AnyBuiltinSolver::Naive(NaiveSolver::build(&wl).expect("could not build naive solver"));
+    let builder = Game::builder(&wl);
+
+    { 0..50 }.into_par_iter().for_each(|_round| {
+        let mut game = builder.build().expect("could not make game");
+        sl.play(&mut game).expect("could not play game");
+        assert!(game.finished());
+        assert!(game.won());
+    });
+    Ok(())
+}