src/bin/solve/simple.rs

@@ -128,7 +128,7 @@ fn help_guess_interactive(cli: Cli) -> anyhow::Result<()> {
                 println!("{}", game);
             }
             ReplCommand::Solve => {
-                let best_guess = solver.guess_for(&game);
+                let best_guess = solver.guess_for(&game)?;
                 println!("best guess: {best_guess}");
             }
             ReplCommand::Guess {

src/error.rs

@@ -13,6 +13,11 @@ pub enum Error {
         #[from]
         source: GameError,
     },
+    #[error("Solver Error")]
+    SolverError {
+        #[from]
+        source: SolverError,
+    },
     #[error("Benchmark Error")]
     BenchError {
         #[from]
@@ -53,3 +58,9 @@ pub enum BenchError {
     #[error("Trying to modify a finished report")]
     ModifyFinishedReport,
 }
+
+#[derive(Debug, Clone, Error)]
+pub enum SolverError {
+    #[error("Wordlist has no matches for the gamestate")]
+    NoMatches,
+}

src/game/response.rs

@@ -21,7 +21,6 @@ pub struct AtomicEvaluation {
 pub struct GuessResponse {
     guess: Word,
     evaluation: Evaluation,
-    finish: bool,
     solution: Option<WordData>,
     step: usize,
     max_steps: usize,
@@ -50,10 +49,9 @@ impl From<char> for Status {
 
 impl GuessResponse {
     pub(crate) fn new<WL: WordList>(guess: &Word, status: Evaluation, game: &Game<WL>) -> Self {
-        let new = Self {
+        let mut new = Self {
             guess: guess.to_owned(),
             evaluation: status,
-            finish: game.step() > game.max_steps(),
             solution: game.solution().cloned(),
             step: game.step(),
             max_steps: game.max_steps(),
@@ -62,7 +60,7 @@ impl GuessResponse {
     }
 
     pub fn finished(&self) -> bool {
-        self.finish
+        self.step() > self.max_steps() || self.won()
     }
 
     pub fn won(&self) -> bool {

src/solve/mod.rs

@@ -11,6 +11,7 @@ use crate::{
 
 #[cfg(feature = "builtin")]
 pub mod naive;
+use libpt::log::debug;
 #[cfg(feature = "builtin")]
 pub use naive::NaiveSolver;
 #[cfg(feature = "builtin")]
@@ -44,14 +45,14 @@ pub trait Solver<'wl, WL: WordList>: Clone + std::fmt::Debug + Sized + Sync {
     ///
     /// Each [Solver] needs to implement this method themselves, many other methods rely on this to
     /// play the [Game], such as [play](Solver::play) or [solve](Solver::solve).
-    fn guess_for(&self, game: &Game<'wl, WL>) -> Word;
+    fn guess_for(&self, game: &Game<'wl, WL>) -> WResult<Word>;
     /// Make a singular step for a [Game]
     ///
     /// # Errors
     ///
     /// This function will return an error if [guess_for](Solver::guess_for) fails.
     fn make_a_move(&self, game: &mut Game<'wl, WL>) -> WResult<GuessResponse> {
-        Ok(game.guess(self.guess_for(game), None)?)
+        Ok(game.guess(self.guess_for(game)?, None)?)
     }
     /// Play a [Game] and return the last [GuessResponse].
     ///
@@ -146,10 +147,11 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for AnyBuiltinSolver<'wl, WL> {
     fn build(wordlist: &'wl WL) -> WResult<Self> {
         Ok(Self::Naive(NaiveSolver::build(wordlist)?))
     }
-    fn guess_for(&self, game: &Game<'wl, WL>) -> Word {
-        match self {
-            Self::Naive(solver) => solver.guess_for(game),
-            Self::Stupid(solver) => solver.guess_for(game),
-        }
+    fn guess_for(&self, game: &Game<'wl, WL>) -> WResult<Word> {
+        debug!("solver: {self:?}");
+        Ok(match self {
+            Self::Naive(solver) => solver.guess_for(game)?,
+            Self::Stupid(solver) => solver.guess_for(game)?,
+        })
     }
 }

src/solve/naive/mod.rs

@@ -1,5 +1,6 @@
 use libpt::log::{info, trace};
 
+use crate::error::{Error, SolverError, WResult};
 use crate::wlist::word::{ManyWordDatas, Word};
 use crate::wlist::WordList;
 
@@ -15,7 +16,7 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for NaiveSolver<'wl, WL> {
         info!("using naive solver");
         Ok(Self { wl: wordlist })
     }
-    fn guess_for(&self, game: &crate::game::Game<WL>) -> Word {
+    fn guess_for(&self, game: &crate::game::Game<WL>) -> WResult<Word> {
         // HACK: hardcoded length
         let mut pattern: String = String::from(".....");
         let mut other_chars: Vec<char> = Vec::new();
@@ -54,9 +55,10 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for NaiveSolver<'wl, WL> {
             })
             .map(|v| v.to_owned())
             .collect();
-        matches[0].0.to_owned() // FIXME: panicks in interactive solve, when I insert bullshit and
-                                // pretend that there is a solution #5 It also crashes in
-                                // non-interactive mode
+        if matches.is_empty() {
+            return Err(SolverError::NoMatches.into());
+        }
+        Ok(matches[0].0.to_owned())
     }
 }
 

src/solve/stupid/mod.rs

@@ -1,5 +1,6 @@
 use libpt::log::info;
 
+use crate::error::WResult;
 use crate::wlist::word::Word;
 use crate::wlist::WordList;
 
@@ -15,8 +16,8 @@ impl<'wl, WL: WordList> Solver<'wl, WL> for StupidSolver<'wl, WL> {
         info!("using stupid solver");
         Ok(Self { wl: wordlist })
     }
-    fn guess_for(&self, game: &crate::game::Game<WL>) -> Word {
-        self.wl.rand_word().0
+    fn guess_for(&self, game: &crate::game::Game<WL>) -> WResult<Word> {
+        Ok(self.wl.rand_word().0)
     }
 }