tools: add some letter info tools for word parsing

.gitignore

@@ -1 +1,2 @@
 result*
+node_modules

shell.nix

@@ -30,9 +30,9 @@ in pkgs.mkShell {
     dhall-json
 
     # deno
+    nodejs-13_x
     nur.repos.xe.deno
     nodePackages.typescript
-    nodePackages.typescript-language-server
 
     # rust
     cargo

tools/Cargo.lock

@@ -1,5 +1,125 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+[[package]]
+name = "anyhow"
+version = "1.0.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85bb70cc08ec97ca5450e6eba421deeea5f172c0fc61f78b5357b2a8e8be195f"
+
 [[package]]
 name = "lewa"
 version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "rust-fsm",
+ "serde",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "0.4.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+dependencies = [
+ "unicode-xid 0.1.0",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70a50b9351bfa8d65a7d93ce712dc63d2fd15ddbf2c36990fc7cac344859c04f"
+dependencies = [
+ "unicode-xid 0.2.0",
+]
+
+[[package]]
+name = "quote"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
+dependencies = [
+ "proc-macro2 0.4.30",
+]
+
+[[package]]
+name = "quote"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "proc-macro2 1.0.15",
+]
+
+[[package]]
+name = "rust-fsm"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1b9ef6eff7d93f596b654be024cdb030dadc0bff93eb22e34a123cc2b13fcb6"
+dependencies = [
+ "rust-fsm-dsl",
+]
+
+[[package]]
+name = "rust-fsm-dsl"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "86ee4c91af3bd97b9c6469f10cf2db993925cddb6f0de761b490c5e95c825ef2"
+dependencies = [
+ "quote 0.6.13",
+ "syn 0.15.44",
+]
+
+[[package]]
+name = "serde"
+version = "1.0.110"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99e7b308464d16b56eba9964e4972a3eee817760ab60d88c3f86e1fecb08204c"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.110"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "818fbf6bfa9a42d3bfcaca148547aa00c7b915bec71d1757aa2d44ca68771984"
+dependencies = [
+ "proc-macro2 1.0.15",
+ "quote 1.0.6",
+ "syn 1.0.23",
+]
+
+[[package]]
+name = "syn"
+version = "0.15.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
+dependencies = [
+ "proc-macro2 0.4.30",
+ "quote 0.6.13",
+ "unicode-xid 0.1.0",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95b5f192649e48a5302a13f2feb224df883b98933222369e4b3b0fe2a5447269"
+dependencies = [
+ "proc-macro2 1.0.15",
+ "quote 1.0.6",
+ "unicode-xid 0.2.0",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+
+[[package]]
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tools/Cargo.toml

@@ -8,3 +8,6 @@ license = "MIT"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0"
+rust-fsm = "0.3.0"
+serde = { version = "1.0", features = ["derive"] }

tools/src/letters.rs

@@ -0,0 +1,93 @@
+use crate::Letter;
+use anyhow::{anyhow, Result};
+
+fn letter2ipa(l: &String) -> Result<String> {
+    let l = l.as_str();
+    // /d f g h j k l m n p q s t w ʃ ʒ ʔ ʙ̥/
+    // /a ɛ i o u/
+    match l {
+        "a" => Ok("a".into()),
+        "b" => Ok("ʙ̥".into()),
+        "d" => Ok("d".into()),
+        "e" => Ok("ɛ".into()),
+        "f" => Ok("f".into()),
+        "g" => Ok("g".into()),
+        "h" => Ok("h".into()),
+        "i" => Ok("i".into()),
+        "j" => Ok("j".into()),
+        "k" => Ok("k".into()),
+        "l" => Ok("l".into()),
+        "m" => Ok("m".into()),
+        "n" => Ok("n".into()),
+        "o" => Ok("o".into()),
+        "p" => Ok("p".into()),
+        "q" => Ok("q".into()),
+        "r" => Ok("r".into()),
+        "s" => Ok("s".into()),
+        "t" => Ok("t".into()),
+        "u" => Ok("u".into()),
+        "w" => Ok("w".into()),
+        "x" => Ok("ʃ".into()),
+        "z" => Ok("ʒ".into()),
+        "'" => Ok("ʔ".into()),
+
+        _ => Err(anyhow!("didn't want {}", l)),
+    }
+}
+
+fn is_vowel(l: &String) -> bool {
+    let l = l.as_str();
+
+    match l {
+        "a" | "e" | "i" | "o" | "u" => true,
+        _ => false,
+    }
+}
+
+fn is_stop(l: &String) -> bool {
+    let l = l.as_str();
+
+    match l {
+        "p" | "t" | "d" | "k" | "g" | "q" | "'" => true,
+        _ => false,
+    }
+}
+
+impl Letter {
+    fn new(l: String) -> Result<Letter> {
+        let ipa = letter2ipa(&l)?;
+        let is_vowel = is_vowel(&l);
+        let is_stop = is_stop(&l);
+        Ok(Letter {
+            latin: l,
+            ipa: ipa,
+            is_vowel: is_vowel,
+            is_stop: is_stop,
+        })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn alphabet() {
+        let alphabet = vec![
+            "a", "b", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r",
+            "s", "t", "u", "w", "x", "z", "'",
+        ];
+        for l in alphabet {
+            let l = l.to_string();
+            super::Letter::new(l).unwrap();
+        }
+    }
+
+    #[test]
+    fn invalid_letters() {
+        let invalid = vec!["treason", "y"];
+
+        for l in invalid {
+            let l = l.to_string();
+            assert!(super::Letter::new(l).is_err());
+        }
+    }
+}

tools/src/lib.rs

@@ -1,3 +1,15 @@
+use serde::{Serialize, Deserialize};
+
+pub mod letters;
+
+#[derive(Deserialize, Serialize)]
+pub struct Letter {
+    latin: String,
+    ipa: String,
+    is_vowel: bool,
+    is_stop: bool,
+}
+
 #[cfg(test)]
 mod tests {
     #[test]