ast: better representation

src/main.rs

@@ -3,61 +3,13 @@ use std::io;
 use std::io::Read;
 use std::env;
 
-enum Exec {
+const EXEC: [(i32, (&'static str, i32)); 1] = [
-/*Addition operation*/
+    (0, ("add", 0))
-    ADD(0, "add"),
+];
-/*Subtraction operation*/
+
-    SUB(0, "sub"),
+struct Exec {
-/*Multiplication operation*/
+    arguments: i32,
-    MULT(0, "mult"),
+    name: String
-/*Division operation*/
-    DIV(0, "div"),
-/*Modulo operation*/
-    MOD(0, "mod"),
-/*< operation*/
-    LT(0, "lt"),
-/*== operation*/
-    EQ(0, "eq"),
-/*> operation*/
-    GT(0, "gt"),
-/*branch operation*/
-    BR(1, "br"),
-/*branch if true operation*/
-    BRT(1, "brt"),
-/*branch if false operation*/
-    BRF(1, "brf"),
-/*put operation*/
-    CONST(1, "const"),
-/*load variable operation*/
-    LOAD(1, "load"),
-/*load global variable operation*/
-    GLOAD(1, "gload"),
-/*store variable operation*/
-    STORE(1, "store"),
-/*store global variable operation*/
-    GSTORE(1, "gstore"),
-/*print operation*/
-    PRINT(0, "print"),
-/*pop operation*/
-    POP(0, "pop"),
-/*end/halt operation*/
-    HALT(0, "halt"),
-/*<= operation*/
-    LEQ(0, "leq"),
-/*>= operation*/
-    GEQ(0, "geq"),
-/*call subroutine operation*/
-    CALL(2, "call"),
-/*return from subroutine operation*/
-    RET(0, "ret"),
-/*print integer operation*/
-    IPRINT(0, "iprint"),
-/*fetch operation*/
-    FETCH(0, "fetch"),
-/*++ operation*/
-    INC(0, "inc"),
-/*-- operation*/
-    DEC(0, "dec")
 }
 
 fn usage(pname: String) {
@@ -95,9 +47,9 @@ fn main() {
             println!("{}", e);
             return;
         }
-    }
+    };
 
     let parsed = parse(contents);
 
-    let execd = exec(contents);
+    let execd = exec(parsed);
 }