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use crate::{encode_section, Encode, Section, SectionId, ValType};
#[derive(Clone, Default, Debug)]
pub struct TableSection {
bytes: Vec<u8>,
num_added: u32,
}
impl TableSection {
pub fn new() -> Self {
Self::default()
}
pub fn len(&self) -> u32 {
self.num_added
}
pub fn is_empty(&self) -> bool {
self.num_added == 0
}
pub fn table(&mut self, table_type: TableType) -> &mut Self {
table_type.encode(&mut self.bytes);
self.num_added += 1;
self
}
}
impl Encode for TableSection {
fn encode(&self, sink: &mut Vec<u8>) {
encode_section(sink, self.num_added, &self.bytes);
}
}
impl Section for TableSection {
fn id(&self) -> u8 {
SectionId::Table.into()
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub struct TableType {
pub element_type: ValType,
pub minimum: u32,
pub maximum: Option<u32>,
}
impl Encode for TableType {
fn encode(&self, sink: &mut Vec<u8>) {
let mut flags = 0;
if self.maximum.is_some() {
flags |= 0b001;
}
self.element_type.encode(sink);
sink.push(flags);
self.minimum.encode(sink);
if let Some(max) = self.maximum {
max.encode(sink);
}
}
}