Fix switch codegen issues

jac3km4 · Feb 2, 2021 · abfc141 · abfc141
1 parent f6333ab
commit abfc141
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/compiler/src/assembler.rs b/compiler/src/assembler.rs
@@ -215,7 +215,7 @@ impl Assembler {
                 for case in cases {
                     let matcher = Assembler::from_expr(&case.0, None, pool, &mut scope.clone())?;
                     let body = Assembler::from_seq(&case.1, pool, &mut scope.clone())?;
-                    self.emit(Instr::SwitchLabel(matcher.offset(), matcher.offset() + body.offset()));
+                    self.emit(Instr::SwitchLabel(matcher.offset() + body.offset(), matcher.offset()));
                     self.append(matcher);
                     self.append(body);
                 }

diff --git a/core/src/bytecode.rs b/core/src/bytecode.rs
@@ -248,7 +248,7 @@ impl Decode for Instr {
             25 => Ok(Instr::Param(input.decode()?)),
             26 => Ok(Instr::ObjectField(input.decode()?)),
             27 => Ok(Instr::ExternalVar),
-            28 => Ok(Instr::Switch(input.decode()?, Offset::new(input.decode::<i16>()? + 9))),
+            28 => Ok(Instr::Switch(input.decode()?, Offset::new(input.decode::<i16>()? + 11))),
             29 => Ok(Instr::SwitchLabel(
                 Offset::new(input.decode::<i16>()? + 3),
                 Offset::new(input.decode::<i16>()? + 5),
@@ -458,7 +458,7 @@ impl Encode for Instr {
             Instr::Switch(idx, offset) => {
                 output.encode(&28u8)?;
                 output.encode(idx)?;
-                output.encode(&Offset::new(offset.value - 9))?;
+                output.encode(&Offset::new(offset.value - 11))?;
             }
             Instr::SwitchLabel(start, exit) => {
                 output.encode(&29u8)?;