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perf: improve variable deleteing

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This commit is contained in:
Artemy 2022-08-09 10:36:11 +03:00
parent 77fbdbc3f7
commit e7b4a02ab7
1 changed files with 12 additions and 7 deletions
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19
src/interpreter.rs
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@ -10,6 +10,7 @@ pub struct Interpreter {
vars: HashMap<String, Var>,
pos: usize,
scope: usize,
scopes: Vec<Vec<String>>,
}
impl Interpreter {
@ -19,6 +20,7 @@ impl Interpreter {
vars: HashMap::new(),
pos: 1,
scope: 0,
scopes: Vec::new(),
}
}
@ -34,6 +36,7 @@ impl Interpreter {
.expect("The program must be an array of commands")
});
self.scopes.push(Vec::new());
for command in arr {
self.eval_node(command);
self.pos += 1;
@ -302,6 +305,7 @@ impl Interpreter {
fn run_nodes(&mut self, arr: &Vec<Value>) -> String {
self.scope += 1;
self.scopes.push(Vec::new());
for command in arr {
let to_do = self.eval_node(command);
match to_do {
@ -315,12 +319,11 @@ impl Interpreter {
}
fn delete_last_scope(&mut self) {
let vars = self.vars.clone().into_iter();
for (k, v) in vars {
if v.scope == self.scope {
self.delete(&k);
}
let vars = self.scopes[self.scope].clone();
for name in vars {
self.delete(&name);
}
self.scopes.remove(self.scope);
}
fn define(&mut self, vars: &Map<String, Value>) {
@ -330,21 +333,23 @@ impl Interpreter {
Value::Object(_) => {
let value = self.eval_node(value);
self.vars.insert(
name.to_string(),
name.clone(),
Var {
scope: self.scope,
body: value,
},
);
self.scopes[self.scope].push(name.clone())
}
_ => {
self.vars.insert(
name.to_string(),
name.clone(),
Var {
scope: self.scope,
body: value.clone(),
},
);
self.scopes[self.scope].push(name.clone())
}
}
} else {