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Add pop_many to reduce redundancy

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This commit is contained in:
Rerumu 2022-02-09 18:47:25 -05:00
parent 5ad07b930c
commit 891851bcb8
1 changed files with 9 additions and 7 deletions
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16
wasm-ast/src/builder.rs
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@ -150,6 +150,10 @@ impl Stacked {
self.stack.pop().unwrap()
}
fn pop_many(&mut self, len: usize) -> Vec<Expression> {
self.stack.split_off(self.stack.len() - len)
}
fn push(&mut self, value: Expression) {
self.stack.push(value);
}
@ -342,7 +346,7 @@ impl<'a> Builder<'a> {
fn gen_return(&mut self, stat: &mut Vec<Statement>) {
let num = self.num_result as usize;
let list = self.data.stack.split_off(self.data.stack.len() - num);
let list = self.data.pop_many(num);
self.data.gen_leak_pending(stat);
@ -351,11 +355,10 @@ impl<'a> Builder<'a> {
fn gen_call(&mut self, func: u32, stat: &mut Vec<Statement>) {
let arity = self.other.arity_of(func as usize);
let len = self.data.stack.len();
let param_list = self.data.pop_many(arity.num_param as usize);
let first = u32::try_from(len).unwrap();
let first = u32::try_from(self.data.stack.len()).unwrap();
let result = first..first + arity.num_result;
let param_list = self.data.stack.split_off(len - arity.num_param as usize);
self.data.push_recall(arity.num_result);
self.data.gen_leak_pending(stat);
@ -370,10 +373,9 @@ impl<'a> Builder<'a> {
fn gen_call_indirect(&mut self, typ: u32, table: u8, stat: &mut Vec<Statement>) {
let arity = self.get_type_of(typ);
let index = self.data.pop();
let len = self.data.stack.len();
let param_list = self.data.pop_many(arity.num_param as usize);
let param_list = self.data.stack.split_off(len - arity.num_param as usize);
let first = u32::try_from(len).unwrap();
let first = u32::try_from(self.data.stack.len()).unwrap();
let result = first..first + arity.num_result;
self.data.push_recall(arity.num_result);