From 116a228c5a67683780efb8bb67ad1ffe1378ce8b Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Wed, 12 Jul 2023 02:23:47 +0200
Subject: [PATCH] special-cased BRC

---
 hbasm/src/lib.rs         | 10 +++++++++-
 hbasm/src/macros/asm.rs  |  2 --
 hbasm/src/macros/text.rs | 21 +++++++++++++++++++--
 3 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/hbasm/src/lib.rs b/hbasm/src/lib.rs
index 0e07fbf..75a5731 100644
--- a/hbasm/src/lib.rs
+++ b/hbasm/src/lib.rs
@@ -16,7 +16,7 @@ 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],
+        => [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)
@@ -30,6 +30,14 @@ macros::impl_both!(
         => [NOP, ECALL],
 );
 
+impl Assembler {
+    // Special-cased
+    #[inline(always)]
+    pub fn i_brc(&mut self, p0: u8, p1: u8, p2: u8) {
+        self.i_param_bbb(hbbytecode::opcode::BRC, p0, p1, p2)
+    }
+}
+
 pub trait Imm {
     fn insert(&self, asm: &mut Assembler);
 }
diff --git a/hbasm/src/macros/asm.rs b/hbasm/src/macros/asm.rs
index 2e1c904..fc8366c 100644
--- a/hbasm/src/macros/asm.rs
+++ b/hbasm/src/macros/asm.rs
@@ -11,7 +11,6 @@ macro_rules! impl_asm_opcodes {
         => [$opcode:ident, $($rest:tt)*]
     ) => {
         paste::paste! {
-            #[allow(dead_code)]
             #[inline(always)]
             pub fn [<i_ $opcode:lower>](&mut self, $($param_i: $param_ty),*) {
                 self.$generic(hbbytecode::opcode::$opcode, $($param_i),*)
@@ -45,7 +44,6 @@ macro_rules! impl_asm {
     ) => {
         paste::paste! {
             $(
-                #[allow(dead_code)]
                 fn [<i_param_ $ityn>](&mut self, opcode: u8, $($param_i: macros::asm::ident_map_ty!($param_ty)),*) {
                     self.buf.push(opcode);
                     $(macros::asm::impl_asm_insert!(self, $param_i, $param_ty);)*
diff --git a/hbasm/src/macros/text.rs b/hbasm/src/macros/text.rs
index f297567..93acfae 100644
--- a/hbasm/src/macros/text.rs
+++ b/hbasm/src/macros/text.rs
@@ -24,6 +24,7 @@ macro_rules! gen_text {
                 #[logos(skip r"-- .*")]
                 pub enum Token {
                     $($(#[token(~([<$opcode:lower>]), |_| hbbytecode::opcode::[<$opcode:upper>])])*)*
+                    #[token("brc", |_| hbbytecode::opcode::BRC)] // Special-cased
                     Opcode(u8),
 
                     #[regex("[0-9]+", |l| l.slice().parse().ok())]
@@ -100,6 +101,17 @@ macro_rules! gen_text {
                                                 self.asm.[<i_param_ $ityn>](op, $($param_i),*);
                                             }),
                                         )*
+                                        // Special-cased
+                                        hbbytecode::opcode::BRC => {
+                                            param_extract_itm!(
+                                                self,
+                                                p0: R,
+                                                p1: R,
+                                                p2: u8
+                                            );
+
+                                            self.asm.i_param_bbb(op, p0, p1, p2);
+                                        }
                                         _ => unreachable!(),
                                     }
                                 }
@@ -123,7 +135,7 @@ macro_rules! gen_text {
 
                 asm.run()
                     .map_err(|kind| Error { kind, span: asm.lexer.span() })?;
-                
+
                 for &loc in &asm.asm.sub {
                     let val = asm.symloc
                         .get(
@@ -166,7 +178,7 @@ macro_rules! gen_text {
 macro_rules! extract_pat {
     ($self:expr, $pat:pat) => {
         let $pat = $self.next()?
-            else { return Err(ErrorKind::UnexpectedToken) };
+                    else { return Err(ErrorKind::UnexpectedToken) };
     };
 }
 
@@ -183,6 +195,11 @@ macro_rules! extract {
         };
     };
 
+    ($self:expr, u8, $id:ident) => {
+        extract_pat!($self, Token::Integer($id));
+        let $id = u8::try_from($id).map_err(|_| ErrorKind::InvalidToken)?;
+    };
+
     ($self:expr, u16, $id:ident) => {
         extract_pat!($self, Token::Integer($id));
         let $id = u16::try_from($id).map_err(|_| ErrorKind::InvalidToken)?;