ConcatStrings

fix-codegen/src/lib.rs

@@ -77,6 +77,8 @@ pub enum Op {
     JumpIfTrue,
     Jump,
 
+    CoerceToString,
+
     ConcatStrings,
     ResolvePath,
 
@@ -250,6 +252,11 @@ impl<'a, Ctx: BytecodeContext> BytecodeEmitter<'a, Ctx> {
         self.ctx.get_code_mut().push(op as u8);
     }
 
+    #[inline]
+    fn emit_bool(&mut self, val: bool) {
+        self.emit_u8(u8::from(val));
+    }
+
     #[inline]
     fn emit_u8(&mut self, val: u8) {
         self.ctx.get_code_mut().push(val);
@@ -615,17 +622,16 @@ impl<'a, Ctx: BytecodeContext> BytecodeEmitter<'a, Ctx> {
                 );
             }
             &Ir::ConcatStrings {
-                parts: _,
-                force_string: _,
+                ref parts,
+                force_string,
             } => {
-                todo!("redesign ConcatStrings");
-                // self.emit_op(Op::ConcatStrings);
-                // self.emit_u16(parts.len() as u16);
-                // self.emit_u8(if force_string { 1 } else { 0 });
-                // for &part in parts.iter() {
-                //     let operand = self.inline_maybe_thunk(part);
-                //     self.emit_inline_operand(operand);
-                // }
+                for &part in parts.iter() {
+                    self.emit_expr(part);
+                    self.emit_op(Op::CoerceToString);
+                }
+                self.emit_op(Op::ConcatStrings);
+                self.emit_u16(parts.len() as u16);
+                self.emit_bool(force_string);
             }
             &Ir::HasAttr { lhs, ref rhs } => {
                 self.emit_has_attr(lhs, rhs);
@@ -842,7 +848,7 @@ impl<'a, Ctx: BytecodeContext> BytecodeEmitter<'a, Ctx> {
             self.emit_u32(total_slots as u32);
             self.emit_u16(required.len() as u16);
             self.emit_u16(optional.len() as u16);
-            self.emit_u8(if *ellipsis { 1 } else { 0 });
+            self.emit_bool(*ellipsis);
 
             for &(sym, _) in required.iter() {
                 self.emit_str_id(sym);