Variables globales (déclaration, affectation avec une expression et évaluation)

src/main.rs

@@ -2,7 +2,6 @@ use std::{env, fs, io};
 use std::io::Write;
 use std::process;
 use crate::astprinter::ASTPrinter;
-use crate::expr::ExprVisitor;
 use crate::interpreter::Interpreter;
 use crate::parser::Parser;
 
@@ -14,15 +13,16 @@ mod expr;
 mod astprinter;
 mod parser;
 mod stmt;
+mod environment;
 
 use crate::scanner::Scanner;
 use crate::stmt::{Statement, StatementVisitor};
 
 // Exit codes from #include <sysexits.h>
 const EX_OK: i32 = 0;
-const EX_DATAERR: i32 = 65;
+//const EX_DATAERR: i32 = 65;
 const EX_USAGE : i32 = 66;
-const EX_EXECERR: i32 = 70;
+//const EX_EXECERR: i32 = 70;
 
 fn main() {
     let args: Vec<String> = env::args().collect();
@@ -81,15 +81,17 @@ fn run(src: String) -> i32 {
         match s {
             Statement::Expression(e) => { printer.visit_expr_stmt(&e) }
             Statement::Print(p) => { printer.visit_print(&p) }
+            Statement::Var(v) => { printer.visit_var_stmt(&v) }
         }
     }
 
     println!("Interpretation");
-    let mut interpreter = Interpreter;
+    let mut interpreter = Interpreter::new();
     for s in program {
         match s {
             Statement::Expression(e) => { interpreter.visit_expr_stmt(&e) }
             Statement::Print(p) => { interpreter.visit_print(&p) }
+            Statement::Var(v) => { interpreter.visit_var_stmt(&v) }
         }
     }