wip lexer

README.md

@@ -12,3 +12,31 @@ this project uses submodules (maybe recursively), so either :
 
 - `git clone --recurse-submodules <repo-url>`
 - or, after cloning : `git submodule update --init --recursive`
+
+## steps
+
+1. lexer
+    -> tokens[] :
+       {
+         PLUS -> +
+         MINUS -> -
+         VARIABLE -> x
+         NUMBER -> int or double
+         POWER -> ^
+         MULTIPLICATION -> *
+         DIVISION -> /
+         END -> null
+       }[]
+2. parser
+    -> terms[] :
+       {
+         SIGN -> + or -
+         COEFFICIENT -> double
+         EXPONENT -> double
+       }[]
+3. reduce
+4. print reduced form
+5. find degree
+6. print degree
+7. solve
+8. print solution