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perf: improve variable deleteing

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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>, vars: HashMap<String, Var>,
pos: usize, pos: usize,
scope: usize, scope: usize,
scopes: Vec<Vec<String>>,
} }
impl Interpreter { impl Interpreter {
@ -19,6 +20,7 @@ impl Interpreter {
vars: HashMap::new(), vars: HashMap::new(),
pos: 1, pos: 1,
scope: 0, scope: 0,
scopes: Vec::new(),
} }
} }
@ -34,6 +36,7 @@ impl Interpreter {
.expect("The program must be an array of commands") .expect("The program must be an array of commands")
}); });
self.scopes.push(Vec::new());
for command in arr { for command in arr {
self.eval_node(command); self.eval_node(command);
self.pos += 1; self.pos += 1;
@ -302,6 +305,7 @@ impl Interpreter {
fn run_nodes(&mut self, arr: &Vec<Value>) -> String { fn run_nodes(&mut self, arr: &Vec<Value>) -> String {
self.scope += 1; self.scope += 1;
self.scopes.push(Vec::new());
for command in arr { for command in arr {
let to_do = self.eval_node(command); let to_do = self.eval_node(command);
match to_do { match to_do {
@ -315,12 +319,11 @@ impl Interpreter {
} }
fn delete_last_scope(&mut self) { fn delete_last_scope(&mut self) {
let vars = self.vars.clone().into_iter(); let vars = self.scopes[self.scope].clone();
for (k, v) in vars { for name in vars {
if v.scope == self.scope { self.delete(&name);
self.delete(&k);
}
} }
self.scopes.remove(self.scope);
} }
fn define(&mut self, vars: &Map<String, Value>) { fn define(&mut self, vars: &Map<String, Value>) {
@ -330,21 +333,23 @@ impl Interpreter {
Value::Object(_) => { Value::Object(_) => {
let value = self.eval_node(value); let value = self.eval_node(value);
self.vars.insert( self.vars.insert(
name.to_string(), name.clone(),
Var { Var {
scope: self.scope, scope: self.scope,
body: value, body: value,
}, },
); );
self.scopes[self.scope].push(name.clone())
} }
_ => { _ => {
self.vars.insert( self.vars.insert(
name.to_string(), name.clone(),
Var { Var {
scope: self.scope, scope: self.scope,
body: value.clone(), body: value.clone(),
}, },
); );
self.scopes[self.scope].push(name.clone())
} }
} }
} else { } else {