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use crate::{
encode_section, Encode, GlobalType, MemoryType, Section, SectionId, TableType, TagType,
CORE_FUNCTION_SORT, CORE_GLOBAL_SORT, CORE_MEMORY_SORT, CORE_TABLE_SORT, CORE_TAG_SORT,
};
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum EntityType {
Function(u32),
Table(TableType),
Memory(MemoryType),
Global(GlobalType),
Tag(TagType),
}
impl Encode for EntityType {
fn encode(&self, sink: &mut Vec<u8>) {
match self {
Self::Function(i) => {
sink.push(CORE_FUNCTION_SORT);
i.encode(sink);
}
Self::Table(t) => {
sink.push(CORE_TABLE_SORT);
t.encode(sink);
}
Self::Memory(t) => {
sink.push(CORE_MEMORY_SORT);
t.encode(sink);
}
Self::Global(t) => {
sink.push(CORE_GLOBAL_SORT);
t.encode(sink);
}
Self::Tag(t) => {
sink.push(CORE_TAG_SORT);
t.encode(sink);
}
}
}
}
impl From<TableType> for EntityType {
fn from(t: TableType) -> Self {
Self::Table(t)
}
}
impl From<MemoryType> for EntityType {
fn from(t: MemoryType) -> Self {
Self::Memory(t)
}
}
impl From<GlobalType> for EntityType {
fn from(t: GlobalType) -> Self {
Self::Global(t)
}
}
impl From<TagType> for EntityType {
fn from(t: TagType) -> Self {
Self::Tag(t)
}
}
#[derive(Clone, Debug, Default)]
pub struct ImportSection {
bytes: Vec<u8>,
num_added: u32,
}
impl ImportSection {
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 import(&mut self, module: &str, field: &str, ty: impl Into<EntityType>) -> &mut Self {
module.encode(&mut self.bytes);
field.encode(&mut self.bytes);
ty.into().encode(&mut self.bytes);
self.num_added += 1;
self
}
}
impl Encode for ImportSection {
fn encode(&self, sink: &mut Vec<u8>) {
encode_section(sink, self.num_added, &self.bytes);
}
}
impl Section for ImportSection {
fn id(&self) -> u8 {
SectionId::Import.into()
}
}