one less library

Signed-off-by: Ava Affine <ava@sunnypup.io>

core/Cargo.toml

@@ -5,10 +5,8 @@ authors = ["Ava <ava@sunnypup.io>"]
 edition = "2021"
 
 [dependencies]
+# cant have math without libc I guess...
 libm = "0.2.8"
-# this one provides a global constant lookup table for simple
-# string escaping in the lexer
-phf = { version = "0.11", default-features = false, features = ["macros"] }
 
 [lib]
 name = "flesh"

core/src/lex.rs

@@ -19,17 +19,19 @@ use alloc::boxed::Box;
 use alloc::string::{String, ToString};
 use crate::segment::{Ctr, Seg};
 use crate::error::{Traceback, start_trace};
-use phf::{Map, phf_map};
 
 const UNMATCHED_STR_DELIM: &str = "Unmatched string delimiter in input";
 const UNMATCHED_LIST_DELIM: &str = "Unmatched list delimiter in input";
 
-
-static ESCAPES: Map<char, char> = phf_map! {
+#[inline]
+fn escape(input: &char) -> char {
+    match input {
         'n'  => '\n',
         't'  => '\t',
         '\\' => '\\',
-};
+        _ => input.clone(),
+    }
+}
 
 /* takes a line of user input
  * returns an unsimplified tree of tokens.
@@ -86,10 +88,7 @@ fn process(document: &String) -> Result<Box<Seg>, String> {
             delim = *d;
 
             if delim == '*' {
-                token.push(ESCAPES.get(&c)
-                           .cloned()
-                           .or(Some(c))
-                           .unwrap());
+                token.push(escape(&c));
                 delim_stack.pop();
                 continue;