HCoop / jackhill / mal.git / blame
| Commit | Line | Data |
|---|---|---|
| f5763ca1 VS |
1 | (de load-relative (Path) |
| 2 | (load (pack (car (file)) Path)) ) | |
| 3 | ||
| 4 | (load-relative "readline.l") | |
| 5 | (load-relative "types.l") | |
| 6 | (load-relative "reader.l") | |
| 7 | (load-relative "printer.l") | |
| 8 | (load-relative "env.l") | |
| 9 | ||
| 10 | (de READ (String) | |
| 11 | (read-str String) ) | |
| 12 | ||
| 0e9990bc VS |
13 | (def '*ReplEnv (MAL-env NIL)) |
| 14 | (set> *ReplEnv '+ '((A B) (MAL-number (+ (MAL-value A) (MAL-value B))))) | |
| 15 | (set> *ReplEnv '- '((A B) (MAL-number (- (MAL-value A) (MAL-value B))))) | |
| 16 | (set> *ReplEnv '* '((A B) (MAL-number (* (MAL-value A) (MAL-value B))))) | |
| 17 | (set> *ReplEnv '/ '((A B) (MAL-number (/ (MAL-value A) (MAL-value B))))) | |
| f5763ca1 VS |
18 | |
| 19 | (de EVAL (Ast Env) | |
| 20 | (if (= (MAL-type Ast) 'list) | |
| 21 | (if (not (MAL-value Ast)) | |
| 22 | Ast | |
| 23 | (let (Ast* (MAL-value Ast) | |
| 24 | A0* (MAL-value (car Ast*)) | |
| 25 | A1* (MAL-value (cadr Ast*)) | |
| 26 | A2 (caddr Ast*)) | |
| 27 | (cond | |
| 28 | ((= A0* 'def!) | |
| 29 | (set> Env A1* (EVAL A2 Env)) ) | |
| 30 | ((= A0* 'let*) | |
| 31 | (let Env* (MAL-env Env) | |
| 32 | (for (Bindings A1* Bindings) | |
| 33 | (let (Key (MAL-value (pop 'Bindings)) | |
| 34 | Value (EVAL (pop 'Bindings) Env*)) | |
| 35 | (set> Env* Key Value) ) ) | |
| 36 | (EVAL A2 Env*) ) ) | |
| 37 | (T (let Value (MAL-value (eval-ast Ast Env)) | |
| 38 | (apply (car Value) (cdr Value)) ) ) ) ) ) | |
| 39 | (eval-ast Ast Env) ) ) | |
| 40 | ||
| 41 | (de eval-ast (Ast Env) | |
| 42 | (let Value (MAL-value Ast) | |
| 43 | (case (MAL-type Ast) | |
| 44 | (symbol (get> Env Value)) | |
| 45 | (list (MAL-list (mapcar '((Form) (EVAL Form Env)) Value))) | |
| 46 | (vector (MAL-vector (mapcar '((Form) (EVAL Form Env)) Value))) | |
| 47 | (map (MAL-map (mapcar '((Form) (EVAL Form Env)) Value))) | |
| 48 | (T Ast) ) ) ) | |
| 49 | ||
| 50 | (de PRINT (Ast) | |
| 51 | (pr-str Ast T) ) | |
| 52 | ||
| 872ae9c4 VS |
53 | (de rep (String) |
| 54 | (PRINT (EVAL (READ String) *ReplEnv)) ) | |
| f5763ca1 VS |
55 | |
| 56 | (load-history ".mal_history") | |
| 57 | ||
| 58 | (use Eof | |
| 59 | (until Eof | |
| 60 | (let Input (readline "user> ") | |
| 61 | (if (=0 Input) | |
| 62 | (setq Eof T) | |
| 872ae9c4 | 63 | (let Output (catch 'err (rep Input)) |
| f5763ca1 VS |
64 | (if (isa '+MALError Output) |
| 65 | (let Message (MAL-value Output) | |
| 1809f9ba VS |
66 | (unless (= (MAL-value Message) "end of token stream") |
| 67 | (prinl "[error] " (pr-str Message)) ) ) | |
| f5763ca1 VS |
68 | (prinl Output) ) ) ) ) ) ) |
| 69 | ||
| 70 | (prinl) | |
| 71 | (bye) |