forked from AbleOS/holey-bytes
93 lines
2.8 KiB
Rust
93 lines
2.8 KiB
Rust
#![feature(alloc_error_handler)]
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#![feature(slice_take)]
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#![no_std]
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use {
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alloc::{string::String, vec::Vec},
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hblang::{codegen::Codegen, parser::FileId},
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};
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extern crate alloc;
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wasm_rt::decl_runtime!(128 * 8 * 1024, 1024 * 4);
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const MAX_INPUT_SIZE: usize = 32 * 4 * 1024;
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wasm_rt::decl_buffer!(MAX_INPUT_SIZE, MAX_INPUT, INPUT, INPUT_LEN);
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#[no_mangle]
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unsafe fn compile_and_run(mut fuel: usize) {
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ALLOCATOR.reset();
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log::set_logger(&wasm_rt::Logger).unwrap();
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log::set_max_level(log::LevelFilter::Error);
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struct File<'a> {
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path: &'a str,
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code: &'a mut str,
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}
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let files = {
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let mut input_bytes =
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core::slice::from_raw_parts_mut(core::ptr::addr_of_mut!(INPUT).cast::<u8>(), INPUT_LEN);
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let mut files = Vec::with_capacity(32);
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while let Some((&mut path_len, rest)) = input_bytes.split_first_chunk_mut() {
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let (path, rest) = rest.split_at_mut(u16::from_le_bytes(path_len) as usize);
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let (&mut code_len, rest) = rest.split_first_chunk_mut().unwrap();
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let (code, rest) = rest.split_at_mut(u16::from_le_bytes(code_len) as usize);
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files.push(File {
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path: core::str::from_utf8_unchecked(path),
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code: core::str::from_utf8_unchecked_mut(code),
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});
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input_bytes = rest;
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}
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hblang::quad_sort(&mut files, |a, b| a.path.cmp(b.path));
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files
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};
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let files = {
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let mut ctx = hblang::parser::ParserCtx::default();
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let paths = files.iter().map(|f| f.path).collect::<Vec<_>>();
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let mut loader = |path: &str, _: &str| Ok(paths.binary_search(&path).unwrap() as FileId);
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files
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.into_iter()
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.map(|f| {
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hblang::parser::Ast::new(
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f.path,
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// since 'free' does nothing this is fine
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String::from_raw_parts(f.code.as_mut_ptr(), f.code.len(), f.code.len()),
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&mut ctx,
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&mut loader,
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)
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})
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.collect::<Vec<_>>()
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};
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let mut ct = {
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let mut c = Codegen::default();
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c.files = files;
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c.generate();
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c.assemble_comptime()
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};
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while fuel != 0 {
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match ct.vm.run() {
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Ok(hbvm::VmRunOk::End) => {
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log::error!("exit code: {}", ct.vm.read_reg(1).0);
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break;
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}
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Ok(hbvm::VmRunOk::Ecall) => {
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let unknown = ct.vm.read_reg(2).0;
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log::error!("unknown ecall: {unknown}")
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}
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Ok(hbvm::VmRunOk::Timer) => fuel -= 1,
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Ok(hbvm::VmRunOk::Breakpoint) => todo!(),
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Err(e) => {
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log::error!("vm error: {e}");
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break;
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}
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}
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}
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}
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