From 271ab5a953c3e563e012d187842c3928ddc54ea8 Mon Sep 17 00:00:00 2001 From: Erin Date: Wed, 12 Jul 2023 02:16:23 +0200 Subject: [PATCH] Rewritten assembler --- Cargo.lock | 28 +++ hbasm/Cargo.toml | 8 +- hbasm/src/lib.rs | 51 ++--- hbasm/src/{macros.rs => macros/asm.rs} | 41 ++-- hbasm/src/macros/mod.rs | 14 ++ hbasm/src/macros/text.rs | 202 ++++++++++++++++++ hbasm/src/main.rs | 39 ++-- hbasm/src/text.rs | 273 ------------------------- 8 files changed, 312 insertions(+), 344 deletions(-) rename hbasm/src/{macros.rs => macros/asm.rs} (58%) create mode 100644 hbasm/src/macros/mod.rs create mode 100644 hbasm/src/macros/text.rs delete mode 100644 hbasm/src/text.rs diff --git a/Cargo.lock b/Cargo.lock index e77351ee..0c533694 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -35,6 +35,12 @@ version = "0.5.2" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "3a8241f3ebb85c056b509d4327ad0358fbbba6ffb340bf388f26350aeda225b1" +[[package]] +name = "bytemuck" +version = "1.13.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "17febce684fd15d89027105661fec94afb475cb995fbc59d2865198446ba2eea" + [[package]] name = "cfg-if" version = "1.0.0" @@ -101,9 +107,11 @@ name = "hbasm" version = "0.1.0" dependencies = [ "ariadne", + "bytemuck", "hashbrown 0.14.0", "hbbytecode", "lasso", + "literify", "logos", "paste", ] @@ -135,6 +143,26 @@ dependencies = [ "hashbrown 0.13.2", ] +[[package]] +name = "literify" +version = "0.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "54e4d365df794ed78b4ce1061886f82eae7afa8e3a98ce4c4b0bfd0c777b1175" +dependencies = [ + "litrs", + "proc-macro2", + "quote", +] + +[[package]] +name = "litrs" +version = "0.4.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4f17c3668f3cc1132437cdadc93dab05e52d592f06948d3f64828430c36e4a70" +dependencies = [ + "proc-macro2", +] + [[package]] name = "log" version = "0.4.17" diff --git a/hbasm/Cargo.toml b/hbasm/Cargo.toml index 1f983785..bd9e98eb 100644 --- a/hbasm/Cargo.toml +++ b/hbasm/Cargo.toml @@ -4,10 +4,12 @@ version = "0.1.0" edition = "2021" [dependencies] +ariadne = "0.3" +bytemuck = "1.13" +hashbrown = "0.14" hbbytecode = { path = "../hbbytecode" } -paste = "1.0" -hashbrown = "0.14.0" -ariadne = "0.3.0" +literify = "0.1" +paste = "1.0" [dependencies.lasso] version = "0.7" diff --git a/hbasm/src/lib.rs b/hbasm/src/lib.rs index b3e12e3e..0e07fbf8 100644 --- a/hbasm/src/lib.rs +++ b/hbasm/src/lib.rs @@ -1,10 +1,7 @@ #![no_std] -#![feature(error_in_core)] extern crate alloc; -pub mod text; - mod macros; use {alloc::vec::Vec, hashbrown::HashSet}; @@ -12,28 +9,26 @@ use {alloc::vec::Vec, hashbrown::HashSet}; #[derive(Default)] pub struct Assembler { pub buf: Vec, - sub: HashSet, + pub sub: HashSet, } -impl Assembler { - macros::impl_asm!( - bbbb(p0: u8, p1: u8, p2: u8, p3: u8) - => [DIR, DIRF, FMAF], - bbb(p0: u8, p1: u8, p2: u8) - => [ADD, SUB, MUL, AND, OR, XOR, SL, SR, SRS, CMP, CMPU, BRC, ADDF, SUBF, MULF], - bbdh(p0: u8, p1: u8, p2: impl Imm, p3: u16) - => [LD, ST], - bbd(p0: u8, p1: u8, p2: impl Imm) - => [ADDI, MULI, ANDI, ORI, XORI, SLI, SRI, SRSI, CMPI, CMPUI, - BMC, JEQ, JNE, JLT, JGT, JLTU, JGTU, ADDFI, MULFI], - bb(p0: u8, p1: u8) - => [NEG, NOT, CP, SWA, NEGF, ITF, FTI], - bd(p0: u8, p1: impl Imm) - => [LI, JMP], - n() - => [NOP, ECALL], - ); -} +macros::impl_both!( + bbbb(p0: R, p1: R, p2: R, p3: R) + => [DIR, DIRF, FMAF], + bbb(p0: R, p1: R, p2: R) + => [ADD, SUB, MUL, AND, OR, XOR, SL, SR, SRS, CMP, CMPU, BRC, ADDF, SUBF, MULF], + bbdh(p0: R, p1: R, p2: I, p3: u16) + => [LD, ST], + bbd(p0: R, p1: R, p2: I) + => [ADDI, MULI, ANDI, ORI, XORI, SLI, SRI, SRSI, CMPI, CMPUI, + BMC, JEQ, JNE, JLT, JGT, JLTU, JGTU, ADDFI, MULFI], + bb(p0: R, p1: R) + => [NEG, NOT, CP, SWA, NEGF, ITF, FTI], + bd(p0: R, p1: I) + => [LI, JMP], + n() + => [NOP, ECALL], +); pub trait Imm { fn insert(&self, asm: &mut Assembler); @@ -53,13 +48,3 @@ macro_rules! impl_imm_le_bytes { } impl_imm_le_bytes!(u64, i64, f64); - -#[derive(Clone, Copy, Debug, PartialEq, Eq)] -pub struct Symbol(pub u64); -impl Imm for Symbol { - #[inline(always)] - fn insert(&self, asm: &mut Assembler) { - asm.sub.insert(asm.buf.len()); - asm.buf.extend(self.0.to_le_bytes()); - } -} diff --git a/hbasm/src/macros.rs b/hbasm/src/macros/asm.rs similarity index 58% rename from hbasm/src/macros.rs rename to hbasm/src/macros/asm.rs index 0a3c93b6..2e1c9045 100644 --- a/hbasm/src/macros.rs +++ b/hbasm/src/macros/asm.rs @@ -18,47 +18,41 @@ macro_rules! impl_asm_opcodes { } } - macros::impl_asm_opcodes!( + macros::asm::impl_asm_opcodes!( $generic($($param_i: $param_ty),*) => [$($rest)*] ); }; } -macro_rules! gen_impl_asm_insert { - ($($ty:ident),* $(,)?) => { - macro_rules! impl_asm_insert { - $(($self:expr, $id:ident, $ty) => { - $self.buf.extend($id.to_le_bytes()) - };)* +macro_rules! impl_asm_insert { + ($self:expr, $id:ident, I) => { + Imm::insert(&$id, $self) + }; - ($self:expr, $id:ident, $_:ty) => { - Imm::insert(&$id, $self) - }; - } + ($self:expr, $id:ident, $_:ident) => { + $self.buf.extend($id.to_le_bytes()) }; } -gen_impl_asm_insert!(u8, u16, u64); - macro_rules! impl_asm { ( $( $ityn:ident - ($($param_i:ident: $param_ty:ty),* $(,)?) + ($($param_i:ident: $param_ty:ident),* $(,)?) => [$($opcode:ident),* $(,)?], )* ) => { paste::paste! { $( #[allow(dead_code)] - fn [](&mut self, opcode: u8, $($param_i: $param_ty),*) { + fn [](&mut self, opcode: u8, $($param_i: macros::asm::ident_map_ty!($param_ty)),*) { self.buf.push(opcode); - $(macros::impl_asm_insert!(self, $param_i, $param_ty);)* + $(macros::asm::impl_asm_insert!(self, $param_i, $param_ty);)* } - macros::impl_asm_opcodes!( - []($($param_i: $param_ty),*) + macros::asm::impl_asm_opcodes!( + []($($param_i: macros::asm::ident_map_ty!($param_ty)),*) => [$($opcode,)*] ); )* @@ -66,7 +60,14 @@ macro_rules! impl_asm { }; } -pub(super) use {impl_asm, impl_asm_opcodes}; +#[rustfmt::skip] +macro_rules! ident_map_ty { + (R) => { u8 }; + (I) => { impl Imm }; + ($id:ident) => { $id }; +} + +pub(crate) use {ident_map_ty, impl_asm, impl_asm_opcodes}; #[allow(clippy::single_component_path_imports)] -pub(super) use impl_asm_insert; +pub(crate) use impl_asm_insert; diff --git a/hbasm/src/macros/mod.rs b/hbasm/src/macros/mod.rs new file mode 100644 index 00000000..6fd1e589 --- /dev/null +++ b/hbasm/src/macros/mod.rs @@ -0,0 +1,14 @@ +pub mod asm; +pub mod text; + +macro_rules! impl_both { + ($($tt:tt)*) => { + impl Assembler { + $crate::macros::asm::impl_asm!($($tt)*); + } + + $crate::macros::text::gen_text!($($tt)*); + }; +} + +pub(crate) use impl_both; diff --git a/hbasm/src/macros/text.rs b/hbasm/src/macros/text.rs new file mode 100644 index 00000000..f2975670 --- /dev/null +++ b/hbasm/src/macros/text.rs @@ -0,0 +1,202 @@ +macro_rules! gen_text { + ( + $( + $ityn:ident + ($($param_i:ident: $param_ty:ident),* $(,)?) + => [$($opcode:ident),* $(,)?], + )* + ) => { + pub mod text { + use { + crate::{ + Assembler, + macros::text::*, + }, + hashbrown::HashMap, + lasso::{Key, Rodeo, Spur}, + logos::{Lexer, Logos, Span}, + }; + + paste::paste!(literify::literify! { + #[derive(Clone, Copy, Debug, PartialEq, Eq, Logos)] + #[logos(extras = Rodeo)] + #[logos(skip r"[ \t\t]+")] + #[logos(skip r"-- .*")] + pub enum Token { + $($(#[token(~([<$opcode:lower>]), |_| hbbytecode::opcode::[<$opcode:upper>])])*)* + Opcode(u8), + + #[regex("[0-9]+", |l| l.slice().parse().ok())] + #[regex( + "-[0-9]+", + |lexer| { + Some(u64::from_ne_bytes(lexer.slice().parse::().ok()?.to_ne_bytes())) + }, + )] Integer(u64), + + #[regex( + "r[0-9]+", + |lexer| match lexer.slice()[1..].parse() { + Ok(n) => Some(n), + _ => None + }, + )] Register(u8), + + #[regex( + r"\p{XID_Start}\p{XID_Continue}*:", + |lexer| lexer.extras.get_or_intern(&lexer.slice()[..lexer.slice().len() - 1]), + )] Label(Spur), + + #[regex( + r"\p{XID_Start}\p{XID_Continue}*", + |lexer| lexer.extras.get_or_intern(lexer.slice()), + )] Symbol(Spur), + + #[token("\n")] + #[token(";")] ISep, + #[token(",")] PSep, + } + }); + + #[derive(Copy, Clone, Debug, PartialEq, Eq)] + pub enum ErrorKind { + UnexpectedToken, + InvalidToken, + UnexpectedEnd, + InvalidSymbol, + } + + #[derive(Clone, Debug, PartialEq, Eq)] + pub struct Error { + pub kind: ErrorKind, + pub span: Span, + } + + pub fn assemble(asm: &mut Assembler, code: &str) -> Result<(), Error> { + pub struct TextAsm<'a> { + asm: &'a mut Assembler, + lexer: Lexer<'a, Token>, + symloc: HashMap, + } + + impl<'a> TextAsm<'a> { + fn next(&mut self) -> Result { + match self.lexer.next() { + Some(Ok(t)) => Ok(t), + Some(Err(())) => Err(ErrorKind::InvalidToken), + None => Err(ErrorKind::UnexpectedEnd), + } + } + + #[inline(always)] + fn run(&mut self) -> Result<(), ErrorKind> { + loop { + match self.lexer.next() { + Some(Ok(Token::Opcode(op))) => { + match op { + $( + $(hbbytecode::opcode::$opcode)|* => paste::paste!({ + param_extract_itm!(self, $($param_i: $param_ty),*); + self.asm.[](op, $($param_i),*); + }), + )* + _ => unreachable!(), + } + } + Some(Ok(Token::Label(lbl))) => { + self.symloc.insert(lbl, self.asm.buf.len()); + } + Some(Ok(Token::ISep)) => (), + Some(Ok(_)) => return Err(ErrorKind::UnexpectedToken), + Some(Err(())) => return Err(ErrorKind::InvalidToken), + None => return Ok(()), + } + } + } + } + + let mut asm = TextAsm { + asm, + lexer: Token::lexer(code), + symloc: HashMap::default(), + }; + + asm.run() + .map_err(|kind| Error { kind, span: asm.lexer.span() })?; + + for &loc in &asm.asm.sub { + let val = asm.symloc + .get( + &Spur::try_from_usize(bytemuck::pod_read_unaligned::(&asm.asm.buf[loc..loc+core::mem::size_of::()]) as _) + .unwrap() + ) + .ok_or(Error { kind: ErrorKind::InvalidSymbol, span: 0..0 })? + .to_le_bytes(); + + asm.asm.buf[loc..] + .iter_mut() + .zip(val) + .for_each(|(dst, src)| *dst = src); + } + + Ok(()) + } + + enum InternalImm { + Const(u64), + Named(Spur), + } + + impl $crate::Imm for InternalImm { + #[inline] + fn insert(&self, asm: &mut Assembler) { + match self { + Self::Const(a) => a.insert(asm), + Self::Named(a) => { + asm.sub.insert(asm.buf.len()); + asm.buf.extend((a.into_usize() as u64).to_le_bytes()); + }, + } + } + } + } + }; +} + +macro_rules! extract_pat { + ($self:expr, $pat:pat) => { + let $pat = $self.next()? + else { return Err(ErrorKind::UnexpectedToken) }; + }; +} + +macro_rules! extract { + ($self:expr, R, $id:ident) => { + extract_pat!($self, Token::Register($id)); + }; + + ($self:expr, I, $id:ident) => { + let $id = match $self.next()? { + Token::Integer(a) => InternalImm::Const(a), + Token::Symbol(a) => InternalImm::Named(a), + _ => return Err(ErrorKind::UnexpectedToken), + }; + }; + + ($self:expr, u16, $id:ident) => { + extract_pat!($self, Token::Integer($id)); + let $id = u16::try_from($id).map_err(|_| ErrorKind::InvalidToken)?; + }; +} + +macro_rules! param_extract_itm { + ($self:expr, $($id:ident: $ty:ident)? $(, $($tt:tt)*)?) => { + $(extract!($self, $ty, $id);)? + $( + extract_pat!($self, Token::PSep); + param_extract_itm!($self, $($tt)*); + )? + }; +} + +pub(crate) use {extract, extract_pat, gen_text, param_extract_itm}; diff --git a/hbasm/src/main.rs b/hbasm/src/main.rs index d59a873b..d5696693 100644 --- a/hbasm/src/main.rs +++ b/hbasm/src/main.rs @@ -1,3 +1,7 @@ +use std::io::Write; + +use hbasm::Assembler; + use { ariadne::{ColorGenerator, Label, Report, ReportKind, Source}, std::{ @@ -10,9 +14,8 @@ fn main() -> Result<(), Box> { let mut code = String::new(); stdin().read_to_string(&mut code)?; - let mut buf = vec![]; - - if let Err(e) = hbasm::text::assembly(&code, &mut buf) { + let mut assembler = Assembler::default(); + if let Err(e) = hbasm::text::assemble(&mut assembler, &code) { let mut colors = ColorGenerator::new(); let e_code = match e.kind { @@ -24,22 +27,28 @@ fn main() -> Result<(), Box> { let message = match e.kind { hbasm::text::ErrorKind::UnexpectedToken => "This token is not expected!", hbasm::text::ErrorKind::InvalidToken => "The token is not valid!", - hbasm::text::ErrorKind::UnexpectedEnd => "The assembler reached the end of input unexpectedly!", - hbasm::text::ErrorKind::InvalidSymbol => "This referenced symbol doesn't have a corresponding label!", + hbasm::text::ErrorKind::UnexpectedEnd => { + "The assembler reached the end of input unexpectedly!" + } + hbasm::text::ErrorKind::InvalidSymbol => { + "This referenced symbol doesn't have a corresponding label!" + } }; let a = colors.next(); Report::build(ReportKind::Error, "engine_internal", e.span.clone().start) - .with_code(e_code) - .with_message(format!("{:?}", e.kind)) - .with_label( - Label::new(("engine_internal", e.span.clone())) - .with_message(message) - .with_color(a), - ) - .finish() - .eprint(("engine_internal", Source::from(&code))) - .unwrap(); + .with_code(e_code) + .with_message(format!("{:?}", e.kind)) + .with_label( + Label::new(("engine_internal", e.span.clone())) + .with_message(message) + .with_color(a), + ) + .finish() + .eprint(("engine_internal", Source::from(&code))) + .unwrap(); + } else { + std::io::stdout().lock().write_all(&assembler.buf).unwrap(); } Ok(()) diff --git a/hbasm/src/text.rs b/hbasm/src/text.rs deleted file mode 100644 index 7739d0e0..00000000 --- a/hbasm/src/text.rs +++ /dev/null @@ -1,273 +0,0 @@ -extern crate alloc; -use alloc::vec::Vec; - -use { - core::fmt::{Display, Formatter}, - hashbrown::HashMap, - lasso::{Rodeo, Spur}, - logos::{Lexer, Logos, Span}, -}; - -macro_rules! tokendef { - ($($opcode:literal),* $(,)?) => { - paste::paste! { - #[derive(Clone, Copy, Debug, PartialEq, Eq, Logos)] - #[logos(extras = Rodeo)] - #[logos(skip r"[ \t\f]+")] - #[logos(skip r"-- .*")] - pub enum Token { - $(#[token($opcode, |_| hbbytecode::opcode::[<$opcode:upper>])])* - OpCode(u8), - - #[regex("[0-9]+", |l| l.slice().parse().ok())] - #[regex( - "-[0-9]+", - |lexer| { - Some(u64::from_ne_bytes(lexer.slice().parse::().ok()?.to_ne_bytes())) - }, - )] Integer(u64), - - #[regex( - "r[0-9]+", - |lexer| match lexer.slice()[1..].parse() { - Ok(n) => Some(n), - _ => None - }, - )] Register(u8), - - #[regex( - r"\p{XID_Start}\p{XID_Continue}*:", - |lexer| lexer.extras.get_or_intern(&lexer.slice()[..lexer.slice().len() - 1]), - )] Label(Spur), - - #[regex( - r"\p{XID_Start}\p{XID_Continue}*", - |lexer| lexer.extras.get_or_intern(lexer.slice()), - )] Symbol(Spur), - - #[token("\n")] - #[token(";")] ISep, - #[token(",")] PSep, - } - } - }; -} - -#[rustfmt::skip] -tokendef![ - "nop", "add", "sub", "mul", "and", "or", "xor", "sl", "sr", "srs", "cmp", "cmpu", - "dir", "neg", "not", "addi", "muli", "andi", "ori", "xori", "sli", "sri", "srsi", - "cmpi", "cmpui", "cp", "swa", "li", "ld", "st", "bmc", "brc", "jmp", "jeq", "jne", - "jlt", "jgt", "jltu", "jgtu", "ecall", "addf", "subf", "mulf", "dirf", "fmaf", "negf", - "itf", "fti", "addfi", "mulfi", -]; - -#[derive(Copy, Clone, Debug, PartialEq, Eq)] -pub enum ErrorKind { - UnexpectedToken, - InvalidToken, - UnexpectedEnd, - InvalidSymbol, -} - -#[derive(Clone, Debug, PartialEq, Eq)] -pub struct Error { - pub kind: ErrorKind, - pub span: Span, -} - -impl Display for Error { - fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result { - write!(f, "Error {:?} at {:?}", self.kind, self.span) - } -} - -impl core::error::Error for Error {} - -macro_rules! expect_matches { - ($self:expr, $($pat:pat),* $(,)?) => {$( - let $pat = $self.next()? - else { return Err(ErrorKind::UnexpectedToken) }; - )*} -} - -pub fn assembly(code: &str, buf: &mut Vec) -> Result<(), Error> { - struct Assembler<'a> { - lexer: Lexer<'a, Token>, - buf: &'a mut Vec, - label_map: HashMap, - to_sub_label: HashMap, - } - - impl<'a> Assembler<'a> { - fn next(&mut self) -> Result { - match self.lexer.next() { - Some(Ok(t)) => Ok(t), - Some(Err(())) => Err(ErrorKind::InvalidToken), - None => Err(ErrorKind::UnexpectedEnd), - } - } - - fn assemble(&mut self) -> Result<(), ErrorKind> { - use hbbytecode::opcode::*; - loop { - match self.lexer.next() { - Some(Ok(Token::OpCode(op))) => { - self.buf.push(op); - match op { - NOP | ECALL => Ok(()), - DIR | DIRF => { - expect_matches!( - self, - Token::Register(r0), - Token::PSep, - Token::Register(r1), - Token::PSep, - Token::Register(r2), - Token::PSep, - Token::Register(r3), - ); - self.buf.extend([r0, r1, r2, r3]); - Ok(()) - } - ADD..=CMPU | ADDF..=MULF => { - expect_matches!( - self, - Token::Register(r0), - Token::PSep, - Token::Register(r1), - Token::PSep, - Token::Register(r2), - ); - self.buf.extend([r0, r1, r2]); - Ok(()) - } - BRC => { - expect_matches!( - self, - Token::Register(r0), - Token::PSep, - Token::Register(r1), - Token::PSep, - Token::Integer(count), - ); - self.buf.extend([ - r0, - r1, - u8::try_from(count).map_err(|_| ErrorKind::UnexpectedToken)?, - ]); - Ok(()) - } - NEG..=NOT | CP..=SWA | NEGF..=FTI => { - expect_matches!( - self, - Token::Register(r0), - Token::PSep, - Token::Register(r1), - ); - self.buf.extend([r0, r1]); - Ok(()) - } - LI | JMP => { - expect_matches!(self, Token::Register(r0), Token::PSep); - self.buf.push(r0); - self.insert_imm()?; - Ok(()) - } - ADDI..=CMPUI | BMC | JEQ..=JGTU | ADDFI..=MULFI => { - expect_matches!( - self, - Token::Register(r0), - Token::PSep, - Token::Register(r1), - Token::PSep, - ); - self.buf.extend([r0, r1]); - self.insert_imm()?; - Ok(()) - } - LD..=ST => { - expect_matches!( - self, - Token::Register(r0), - Token::PSep, - Token::Register(r1), - Token::PSep, - Token::Integer(offset), - Token::PSep, - Token::Integer(len), - ); - self.buf.extend([r0, r1]); - self.buf.extend(offset.to_le_bytes()); - self.buf.extend( - u16::try_from(len) - .map_err(|_| ErrorKind::InvalidToken)? - .to_le_bytes(), - ); - Ok(()) - } - _ => unreachable!(), - }?; - match self.next() { - Ok(Token::ISep) => (), - Ok(_) => return Err(ErrorKind::UnexpectedToken), - Err(ErrorKind::UnexpectedEnd) => return Ok(()), - Err(e) => return Err(e), - } - } - Some(Ok(Token::Label(lbl))) => { - self.label_map.insert(lbl, self.buf.len() as u64); - } - Some(Ok(Token::ISep)) => (), - Some(Ok(_)) => return Err(ErrorKind::UnexpectedToken), - Some(Err(())) => return Err(ErrorKind::InvalidToken), - None => return Ok(()), - } - } - } - - fn link_local_syms(&mut self) -> Result<(), ErrorKind> { - for (ix, sym) in &self.to_sub_label { - self.label_map - .get(sym) - .ok_or(ErrorKind::InvalidSymbol)? - .to_le_bytes() - .iter() - .enumerate() - .for_each(|(i, b)| { - self.buf[ix + i] = *b; - }); - } - - Ok(()) - } - - fn insert_imm(&mut self) -> Result<(), ErrorKind> { - let imm = match self.next()? { - Token::Integer(i) => i.to_le_bytes(), - Token::Symbol(s) => { - self.to_sub_label.insert(self.buf.len(), s); - [0; 8] - } - _ => return Err(ErrorKind::UnexpectedToken), - }; - self.buf.extend(imm); - Ok(()) - } - } - - let mut asm = Assembler { - lexer: Token::lexer(code), - label_map: Default::default(), - to_sub_label: Default::default(), - buf, - }; - - asm.assemble().map_err(|kind| Error { - kind, - span: asm.lexer.span(), - })?; - - asm.link_local_syms() - .map_err(|kind| Error { kind, span: 0..0 }) -}